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net/socket.c
94.9 KB
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// SPDX-License-Identifier: GPL-2.0-or-later |
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/* * NET An implementation of the SOCKET network access protocol. * * Version: @(#)socket.c 1.1.93 18/02/95 * * Authors: Orest Zborowski, <obz@Kodak.COM> |
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* Ross Biro |
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * * Fixes: * Anonymous : NOTSOCK/BADF cleanup. Error fix in * shutdown() * Alan Cox : verify_area() fixes * Alan Cox : Removed DDI * Jonathan Kamens : SOCK_DGRAM reconnect bug * Alan Cox : Moved a load of checks to the very * top level. * Alan Cox : Move address structures to/from user * mode above the protocol layers. * Rob Janssen : Allow 0 length sends. * Alan Cox : Asynchronous I/O support (cribbed from the * tty drivers). * Niibe Yutaka : Asynchronous I/O for writes (4.4BSD style) * Jeff Uphoff : Made max number of sockets command-line * configurable. * Matti Aarnio : Made the number of sockets dynamic, * to be allocated when needed, and mr. * Uphoff's max is used as max to be * allowed to allocate. * Linus : Argh. removed all the socket allocation * altogether: it's in the inode now. * Alan Cox : Made sock_alloc()/sock_release() public * for NetROM and future kernel nfsd type * stuff. * Alan Cox : sendmsg/recvmsg basics. * Tom Dyas : Export net symbols. * Marcin Dalecki : Fixed problems with CONFIG_NET="n". * Alan Cox : Added thread locking to sys_* calls * for sockets. May have errors at the * moment. * Kevin Buhr : Fixed the dumb errors in the above. * Andi Kleen : Some small cleanups, optimizations, * and fixed a copy_from_user() bug. * Tigran Aivazian : sys_send(args) calls sys_sendto(args, NULL, 0) |
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* Tigran Aivazian : Made listen(2) backlog sanity checks |
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* protocol-independent * |
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* This module is effectively the top level interface to the BSD socket |
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* paradigm. |
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* * Based upon Swansea University Computer Society NET3.039 */ |
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#include <linux/mm.h> |
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#include <linux/socket.h> #include <linux/file.h> #include <linux/net.h> #include <linux/interrupt.h> |
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#include <linux/thread_info.h> |
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#include <linux/rcupdate.h> |
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#include <linux/netdevice.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> |
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#include <linux/mutex.h> |
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#include <linux/if_bridge.h> |
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#include <linux/if_frad.h> #include <linux/if_vlan.h> |
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#include <linux/ptp_classify.h> |
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#include <linux/init.h> #include <linux/poll.h> #include <linux/cache.h> #include <linux/module.h> #include <linux/highmem.h> |
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#include <linux/mount.h> |
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#include <linux/pseudo_fs.h> |
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#include <linux/security.h> #include <linux/syscalls.h> #include <linux/compat.h> #include <linux/kmod.h> |
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#include <linux/audit.h> |
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#include <linux/wireless.h> |
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#include <linux/nsproxy.h> |
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#include <linux/magic.h> |
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#include <linux/slab.h> |
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#include <linux/xattr.h> |
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#include <linux/nospec.h> |
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#include <linux/indirect_call_wrapper.h> |
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|
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#include <linux/uaccess.h> |
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#include <asm/unistd.h> #include <net/compat.h> |
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#include <net/wext.h> |
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#include <net/cls_cgroup.h> |
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#include <net/sock.h> #include <linux/netfilter.h> |
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#include <linux/if_tun.h> #include <linux/ipv6_route.h> #include <linux/route.h> |
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#include <linux/sockios.h> |
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#include <net/busy_poll.h> |
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#include <linux/errqueue.h> |
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|
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#ifdef CONFIG_NET_RX_BUSY_POLL |
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unsigned int sysctl_net_busy_read __read_mostly; unsigned int sysctl_net_busy_poll __read_mostly; |
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#endif |
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|
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static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to); static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from); |
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static int sock_mmap(struct file *file, struct vm_area_struct *vma); |
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static int sock_close(struct inode *inode, struct file *file); |
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static __poll_t sock_poll(struct file *file, struct poll_table_struct *wait); |
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static long sock_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
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#ifdef CONFIG_COMPAT static long compat_sock_ioctl(struct file *file, |
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unsigned int cmd, unsigned long arg); |
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#endif |
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static int sock_fasync(int fd, struct file *filp, int on); |
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static ssize_t sock_sendpage(struct file *file, struct page *page, int offset, size_t size, loff_t *ppos, int more); |
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static ssize_t sock_splice_read(struct file *file, loff_t *ppos, |
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struct pipe_inode_info *pipe, size_t len, |
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unsigned int flags); |
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|
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/* * Socket files have a set of 'special' operations as well as the generic file ones. These don't appear * in the operation structures but are done directly via the socketcall() multiplexor. */ |
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static const struct file_operations socket_file_ops = { |
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.owner = THIS_MODULE, .llseek = no_llseek, |
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.read_iter = sock_read_iter, .write_iter = sock_write_iter, |
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.poll = sock_poll, .unlocked_ioctl = sock_ioctl, |
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#ifdef CONFIG_COMPAT .compat_ioctl = compat_sock_ioctl, #endif |
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.mmap = sock_mmap, |
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.release = sock_close, .fasync = sock_fasync, |
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.sendpage = sock_sendpage, .splice_write = generic_splice_sendpage, |
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.splice_read = sock_splice_read, |
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}; /* * The protocol list. Each protocol is registered in here. */ |
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static DEFINE_SPINLOCK(net_family_lock); |
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static const struct net_proto_family __rcu *net_families[NPROTO] __read_mostly; |
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|
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/* |
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* Support routines. * Move socket addresses back and forth across the kernel/user * divide and look after the messy bits. |
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*/ |
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/** * move_addr_to_kernel - copy a socket address into kernel space * @uaddr: Address in user space * @kaddr: Address in kernel space * @ulen: Length in user space * * The address is copied into kernel space. If the provided address is * too long an error code of -EINVAL is returned. If the copy gives * invalid addresses -EFAULT is returned. On a success 0 is returned. */ |
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int move_addr_to_kernel(void __user *uaddr, int ulen, struct sockaddr_storage *kaddr) |
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{ |
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if (ulen < 0 || ulen > sizeof(struct sockaddr_storage)) |
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return -EINVAL; |
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if (ulen == 0) |
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return 0; |
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if (copy_from_user(kaddr, uaddr, ulen)) |
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return -EFAULT; |
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return audit_sockaddr(ulen, kaddr); |
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} /** * move_addr_to_user - copy an address to user space * @kaddr: kernel space address * @klen: length of address in kernel * @uaddr: user space address * @ulen: pointer to user length field * * The value pointed to by ulen on entry is the buffer length available. * This is overwritten with the buffer space used. -EINVAL is returned * if an overlong buffer is specified or a negative buffer size. -EFAULT * is returned if either the buffer or the length field are not * accessible. * After copying the data up to the limit the user specifies, the true * length of the data is written over the length limit the user * specified. Zero is returned for a success. */ |
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|
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static int move_addr_to_user(struct sockaddr_storage *kaddr, int klen, |
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void __user *uaddr, int __user *ulen) |
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{ int err; int len; |
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BUG_ON(klen > sizeof(struct sockaddr_storage)); |
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err = get_user(len, ulen); if (err) |
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return err; |
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if (len > klen) len = klen; |
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if (len < 0) |
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return -EINVAL; |
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if (len) { |
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if (audit_sockaddr(klen, kaddr)) return -ENOMEM; |
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if (copy_to_user(uaddr, kaddr, len)) |
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return -EFAULT; } /* |
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* "fromlen shall refer to the value before truncation.." * 1003.1g |
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*/ return __put_user(klen, ulen); } |
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static struct kmem_cache *sock_inode_cachep __ro_after_init; |
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static struct inode *sock_alloc_inode(struct super_block *sb) { struct socket_alloc *ei; |
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|
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ei = kmem_cache_alloc(sock_inode_cachep, GFP_KERNEL); |
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if (!ei) return NULL; |
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init_waitqueue_head(&ei->socket.wq.wait); ei->socket.wq.fasync_list = NULL; ei->socket.wq.flags = 0; |
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|
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ei->socket.state = SS_UNCONNECTED; ei->socket.flags = 0; ei->socket.ops = NULL; ei->socket.sk = NULL; ei->socket.file = NULL; |
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return &ei->vfs_inode; } |
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static void sock_free_inode(struct inode *inode) |
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{ |
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struct socket_alloc *ei; ei = container_of(inode, struct socket_alloc, vfs_inode); |
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kmem_cache_free(sock_inode_cachep, ei); |
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} |
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static void init_once(void *foo) |
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{ |
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struct socket_alloc *ei = (struct socket_alloc *)foo; |
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|
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inode_init_once(&ei->vfs_inode); |
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} |
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|
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static void init_inodecache(void) |
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{ sock_inode_cachep = kmem_cache_create("sock_inode_cache", |
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SLAB_MEM_SPREAD | SLAB_ACCOUNT), |
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init_once); |
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BUG_ON(sock_inode_cachep == NULL); |
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} |
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static const struct super_operations sockfs_ops = { |
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.alloc_inode = sock_alloc_inode, |
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.free_inode = sock_free_inode, |
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.statfs = simple_statfs, |
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}; |
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/* * sockfs_dname() is called from d_path(). */ static char *sockfs_dname(struct dentry *dentry, char *buffer, int buflen) { return dynamic_dname(dentry, buffer, buflen, "socket:[%lu]", |
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d_inode(dentry)->i_ino); |
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} |
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static const struct dentry_operations sockfs_dentry_operations = { |
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.d_dname = sockfs_dname, |
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}; |
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static int sockfs_xattr_get(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *suffix, void *value, size_t size) { if (value) { if (dentry->d_name.len + 1 > size) return -ERANGE; memcpy(value, dentry->d_name.name, dentry->d_name.len + 1); } return dentry->d_name.len + 1; } #define XATTR_SOCKPROTONAME_SUFFIX "sockprotoname" #define XATTR_NAME_SOCKPROTONAME (XATTR_SYSTEM_PREFIX XATTR_SOCKPROTONAME_SUFFIX) #define XATTR_NAME_SOCKPROTONAME_LEN (sizeof(XATTR_NAME_SOCKPROTONAME)-1) static const struct xattr_handler sockfs_xattr_handler = { .name = XATTR_NAME_SOCKPROTONAME, .get = sockfs_xattr_get, }; |
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static int sockfs_security_xattr_set(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *suffix, const void *value, size_t size, int flags) { /* Handled by LSM. */ return -EAGAIN; } static const struct xattr_handler sockfs_security_xattr_handler = { .prefix = XATTR_SECURITY_PREFIX, .set = sockfs_security_xattr_set, }; |
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static const struct xattr_handler *sockfs_xattr_handlers[] = { &sockfs_xattr_handler, |
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&sockfs_security_xattr_handler, |
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NULL }; |
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static int sockfs_init_fs_context(struct fs_context *fc) |
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{ |
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struct pseudo_fs_context *ctx = init_pseudo(fc, SOCKFS_MAGIC); if (!ctx) return -ENOMEM; ctx->ops = &sockfs_ops; ctx->dops = &sockfs_dentry_operations; ctx->xattr = sockfs_xattr_handlers; return 0; |
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} static struct vfsmount *sock_mnt __read_mostly; static struct file_system_type sock_fs_type = { .name = "sockfs", |
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.init_fs_context = sockfs_init_fs_context, |
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.kill_sb = kill_anon_super, }; |
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/* * Obtains the first available file descriptor and sets it up for use. * |
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* These functions create file structures and maps them to fd space * of the current process. On success it returns file descriptor |
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* and file struct implicitly stored in sock->file. * Note that another thread may close file descriptor before we return * from this function. We use the fact that now we do not refer * to socket after mapping. If one day we will need it, this * function will increment ref. count on file by 1. * * In any case returned fd MAY BE not valid! * This race condition is unavoidable * with shared fd spaces, we cannot solve it inside kernel, * but we take care of internal coherence yet. */ |
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/** * sock_alloc_file - Bind a &socket to a &file * @sock: socket * @flags: file status flags * @dname: protocol name * * Returns the &file bound with @sock, implicitly storing it * in sock->file. If dname is %NULL, sets to "". * On failure the return is a ERR pointer (see linux/err.h). * This function uses GFP_KERNEL internally. */ |
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struct file *sock_alloc_file(struct socket *sock, int flags, const char *dname) |
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{ |
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struct file *file; |
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|
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if (!dname) dname = sock->sk ? sock->sk->sk_prot_creator->name : ""; |
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|
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file = alloc_file_pseudo(SOCK_INODE(sock), sock_mnt, dname, O_RDWR | (flags & O_NONBLOCK), &socket_file_ops); |
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if (IS_ERR(file)) { |
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sock_release(sock); |
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return file; |
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} sock->file = file; |
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file->private_data = sock; |
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return file; |
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} |
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EXPORT_SYMBOL(sock_alloc_file); |
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|
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static int sock_map_fd(struct socket *sock, int flags) |
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{ struct file *newfile; |
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int fd = get_unused_fd_flags(flags); |
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if (unlikely(fd < 0)) { sock_release(sock); |
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return fd; |
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} |
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|
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newfile = sock_alloc_file(sock, flags, NULL); |
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if (!IS_ERR(newfile)) { |
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fd_install(fd, newfile); |
284076305 take descriptor h... |
403 404 |
return fd; } |
7cbe66b6b merge sock_alloc_... |
405 |
|
284076305 take descriptor h... |
406 407 |
put_unused_fd(fd); return PTR_ERR(newfile); |
1da177e4c Linux-2.6.12-rc2 |
408 |
} |
8a3c245c0 net: add document... |
409 410 411 412 413 414 415 |
/** * sock_from_file - Return the &socket bounded to @file. * @file: file * @err: pointer to an error code return * * On failure returns %NULL and assigns -ENOTSOCK to @err. */ |
406a3c638 net: netprio_cgro... |
416 |
struct socket *sock_from_file(struct file *file, int *err) |
6cb153cab [NET]: use fget_l... |
417 |
{ |
6cb153cab [NET]: use fget_l... |
418 419 |
if (file->f_op == &socket_file_ops) return file->private_data; /* set in sock_map_fd */ |
23bb80d21 [NET]: cleanup so... |
420 421 |
*err = -ENOTSOCK; return NULL; |
6cb153cab [NET]: use fget_l... |
422 |
} |
406a3c638 net: netprio_cgro... |
423 |
EXPORT_SYMBOL(sock_from_file); |
6cb153cab [NET]: use fget_l... |
424 |
|
1da177e4c Linux-2.6.12-rc2 |
425 |
/** |
c6d409cfd From abbffa2aa9bd... |
426 |
* sockfd_lookup - Go from a file number to its socket slot |
1da177e4c Linux-2.6.12-rc2 |
427 428 429 430 |
* @fd: file handle * @err: pointer to an error code return * * The file handle passed in is locked and the socket it is bound |
241c4667f net: socket: fix ... |
431 |
* to is returned. If an error occurs the err pointer is overwritten |
1da177e4c Linux-2.6.12-rc2 |
432 433 434 435 436 437 438 439 440 |
* with a negative errno code and NULL is returned. The function checks * for both invalid handles and passing a handle which is not a socket. * * On a success the socket object pointer is returned. */ struct socket *sockfd_lookup(int fd, int *err) { struct file *file; |
1da177e4c Linux-2.6.12-rc2 |
441 |
struct socket *sock; |
89bddce58 [NET] socket: cod... |
442 443 |
file = fget(fd); if (!file) { |
1da177e4c Linux-2.6.12-rc2 |
444 445 446 |
*err = -EBADF; return NULL; } |
89bddce58 [NET] socket: cod... |
447 |
|
6cb153cab [NET]: use fget_l... |
448 449 |
sock = sock_from_file(file, err); if (!sock) |
1da177e4c Linux-2.6.12-rc2 |
450 |
fput(file); |
6cb153cab [NET]: use fget_l... |
451 452 |
return sock; } |
c6d409cfd From abbffa2aa9bd... |
453 |
EXPORT_SYMBOL(sockfd_lookup); |
1da177e4c Linux-2.6.12-rc2 |
454 |
|
6cb153cab [NET]: use fget_l... |
455 456 |
static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed) { |
00e188ef6 sockfd_lookup_lig... |
457 |
struct fd f = fdget(fd); |
6cb153cab [NET]: use fget_l... |
458 |
struct socket *sock; |
3672558c6 [NET]: sockfd_loo... |
459 |
*err = -EBADF; |
00e188ef6 sockfd_lookup_lig... |
460 461 462 463 |
if (f.file) { sock = sock_from_file(f.file, err); if (likely(sock)) { *fput_needed = f.flags; |
6cb153cab [NET]: use fget_l... |
464 |
return sock; |
00e188ef6 sockfd_lookup_lig... |
465 466 |
} fdput(f); |
1da177e4c Linux-2.6.12-rc2 |
467 |
} |
6cb153cab [NET]: use fget_l... |
468 |
return NULL; |
1da177e4c Linux-2.6.12-rc2 |
469 |
} |
600e17792 net: Providing pr... |
470 471 472 473 474 |
static ssize_t sockfs_listxattr(struct dentry *dentry, char *buffer, size_t size) { ssize_t len; ssize_t used = 0; |
c5ef60352 VFS: net/: d_inod... |
475 |
len = security_inode_listsecurity(d_inode(dentry), buffer, size); |
600e17792 net: Providing pr... |
476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 |
if (len < 0) return len; used += len; if (buffer) { if (size < used) return -ERANGE; buffer += len; } len = (XATTR_NAME_SOCKPROTONAME_LEN + 1); used += len; if (buffer) { if (size < used) return -ERANGE; memcpy(buffer, XATTR_NAME_SOCKPROTONAME, len); buffer += len; } return used; } |
dc647ec88 net: socket: Make... |
496 |
static int sockfs_setattr(struct dentry *dentry, struct iattr *iattr) |
86741ec25 net: core: Add a ... |
497 498 |
{ int err = simple_setattr(dentry, iattr); |
e1a3a60a2 net: socket: don'... |
499 |
if (!err && (iattr->ia_valid & ATTR_UID)) { |
86741ec25 net: core: Add a ... |
500 |
struct socket *sock = SOCKET_I(d_inode(dentry)); |
6d8c50dcb socket: close rac... |
501 502 503 504 |
if (sock->sk) sock->sk->sk_uid = iattr->ia_uid; else err = -ENOENT; |
86741ec25 net: core: Add a ... |
505 506 507 508 |
} return err; } |
600e17792 net: Providing pr... |
509 |
static const struct inode_operations sockfs_inode_ops = { |
600e17792 net: Providing pr... |
510 |
.listxattr = sockfs_listxattr, |
86741ec25 net: core: Add a ... |
511 |
.setattr = sockfs_setattr, |
600e17792 net: Providing pr... |
512 |
}; |
1da177e4c Linux-2.6.12-rc2 |
513 |
/** |
8a3c245c0 net: add document... |
514 |
* sock_alloc - allocate a socket |
89bddce58 [NET] socket: cod... |
515 |
* |
1da177e4c Linux-2.6.12-rc2 |
516 517 |
* Allocate a new inode and socket object. The two are bound together * and initialised. The socket is then returned. If we are out of inodes |
8a3c245c0 net: add document... |
518 |
* NULL is returned. This functions uses GFP_KERNEL internally. |
1da177e4c Linux-2.6.12-rc2 |
519 |
*/ |
f4a00aacd net: Make sock_al... |
520 |
struct socket *sock_alloc(void) |
1da177e4c Linux-2.6.12-rc2 |
521 |
{ |
89bddce58 [NET] socket: cod... |
522 523 |
struct inode *inode; struct socket *sock; |
1da177e4c Linux-2.6.12-rc2 |
524 |
|
a209dfc7b vfs: dont chain p... |
525 |
inode = new_inode_pseudo(sock_mnt->mnt_sb); |
1da177e4c Linux-2.6.12-rc2 |
526 527 528 529 |
if (!inode) return NULL; sock = SOCKET_I(inode); |
85fe4025c fs: do not assign... |
530 |
inode->i_ino = get_next_ino(); |
89bddce58 [NET] socket: cod... |
531 |
inode->i_mode = S_IFSOCK | S_IRWXUGO; |
8192b0c48 CRED: Wrap task c... |
532 533 |
inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); |
600e17792 net: Providing pr... |
534 |
inode->i_op = &sockfs_inode_ops; |
1da177e4c Linux-2.6.12-rc2 |
535 |
|
1da177e4c Linux-2.6.12-rc2 |
536 537 |
return sock; } |
f4a00aacd net: Make sock_al... |
538 |
EXPORT_SYMBOL(sock_alloc); |
1da177e4c Linux-2.6.12-rc2 |
539 |
|
1da177e4c Linux-2.6.12-rc2 |
540 |
/** |
8a3c245c0 net: add document... |
541 |
* sock_release - close a socket |
1da177e4c Linux-2.6.12-rc2 |
542 543 544 545 |
* @sock: socket to close * * The socket is released from the protocol stack if it has a release * callback, and the inode is then released if the socket is bound to |
89bddce58 [NET] socket: cod... |
546 |
* an inode not a file. |
1da177e4c Linux-2.6.12-rc2 |
547 |
*/ |
89bddce58 [NET] socket: cod... |
548 |
|
6d8c50dcb socket: close rac... |
549 |
static void __sock_release(struct socket *sock, struct inode *inode) |
1da177e4c Linux-2.6.12-rc2 |
550 551 552 |
{ if (sock->ops) { struct module *owner = sock->ops->owner; |
6d8c50dcb socket: close rac... |
553 554 |
if (inode) inode_lock(inode); |
1da177e4c Linux-2.6.12-rc2 |
555 |
sock->ops->release(sock); |
ff7b11aa4 net: socket: set ... |
556 |
sock->sk = NULL; |
6d8c50dcb socket: close rac... |
557 558 |
if (inode) inode_unlock(inode); |
1da177e4c Linux-2.6.12-rc2 |
559 560 561 |
sock->ops = NULL; module_put(owner); } |
333f7909a coallocate socket... |
562 |
if (sock->wq.fasync_list) |
3410f22ea socket: replace s... |
563 564 |
pr_err("%s: fasync list not empty! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
565 |
|
1da177e4c Linux-2.6.12-rc2 |
566 567 568 569 |
if (!sock->file) { iput(SOCK_INODE(sock)); return; } |
89bddce58 [NET] socket: cod... |
570 |
sock->file = NULL; |
1da177e4c Linux-2.6.12-rc2 |
571 |
} |
6d8c50dcb socket: close rac... |
572 573 574 575 576 |
void sock_release(struct socket *sock) { __sock_release(sock, NULL); } |
c6d409cfd From abbffa2aa9bd... |
577 |
EXPORT_SYMBOL(sock_release); |
1da177e4c Linux-2.6.12-rc2 |
578 |
|
c14ac9451 sock: enable time... |
579 |
void __sock_tx_timestamp(__u16 tsflags, __u8 *tx_flags) |
20d494735 net: socket infra... |
580 |
{ |
140c55d4b net-timestamp: so... |
581 |
u8 flags = *tx_flags; |
c14ac9451 sock: enable time... |
582 |
if (tsflags & SOF_TIMESTAMPING_TX_HARDWARE) |
140c55d4b net-timestamp: so... |
583 |
flags |= SKBTX_HW_TSTAMP; |
c14ac9451 sock: enable time... |
584 |
if (tsflags & SOF_TIMESTAMPING_TX_SOFTWARE) |
140c55d4b net-timestamp: so... |
585 |
flags |= SKBTX_SW_TSTAMP; |
c14ac9451 sock: enable time... |
586 |
if (tsflags & SOF_TIMESTAMPING_TX_SCHED) |
140c55d4b net-timestamp: so... |
587 |
flags |= SKBTX_SCHED_TSTAMP; |
140c55d4b net-timestamp: so... |
588 |
*tx_flags = flags; |
20d494735 net: socket infra... |
589 |
} |
67cc0d407 net-timestamp: op... |
590 |
EXPORT_SYMBOL(__sock_tx_timestamp); |
20d494735 net: socket infra... |
591 |
|
8c3c447b3 net: use indirect... |
592 593 |
INDIRECT_CALLABLE_DECLARE(int inet_sendmsg(struct socket *, struct msghdr *, size_t)); |
a648a592d net: adjust socke... |
594 595 |
INDIRECT_CALLABLE_DECLARE(int inet6_sendmsg(struct socket *, struct msghdr *, size_t)); |
d8725c86a get rid of the si... |
596 |
static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg) |
1da177e4c Linux-2.6.12-rc2 |
597 |
{ |
a648a592d net: adjust socke... |
598 599 600 |
int ret = INDIRECT_CALL_INET(sock->ops->sendmsg, inet6_sendmsg, inet_sendmsg, sock, msg, msg_data_left(msg)); |
d8725c86a get rid of the si... |
601 602 |
BUG_ON(ret == -EIOCBQUEUED); return ret; |
1da177e4c Linux-2.6.12-rc2 |
603 |
} |
85806af0c net: fix kernel-d... |
604 605 606 607 608 609 610 611 |
/** * sock_sendmsg - send a message through @sock * @sock: socket * @msg: message to send * * Sends @msg through @sock, passing through LSM. * Returns the number of bytes sent, or an error code. */ |
d8725c86a get rid of the si... |
612 |
int sock_sendmsg(struct socket *sock, struct msghdr *msg) |
228e548e6 net: Add sendmmsg... |
613 |
{ |
d8725c86a get rid of the si... |
614 |
int err = security_socket_sendmsg(sock, msg, |
01e97e651 new helper: msg_d... |
615 |
msg_data_left(msg)); |
228e548e6 net: Add sendmmsg... |
616 |
|
d8725c86a get rid of the si... |
617 |
return err ?: sock_sendmsg_nosec(sock, msg); |
0cf00c6f3 net/socket.c : in... |
618 |
} |
c6d409cfd From abbffa2aa9bd... |
619 |
EXPORT_SYMBOL(sock_sendmsg); |
1da177e4c Linux-2.6.12-rc2 |
620 |
|
8a3c245c0 net: add document... |
621 622 623 624 625 626 627 628 629 630 631 |
/** * kernel_sendmsg - send a message through @sock (kernel-space) * @sock: socket * @msg: message header * @vec: kernel vec * @num: vec array length * @size: total message data size * * Builds the message data with @vec and sends it through @sock. * Returns the number of bytes sent, or an error code. */ |
1da177e4c Linux-2.6.12-rc2 |
632 633 634 |
int kernel_sendmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size) { |
aa563d7bc iov_iter: Separat... |
635 |
iov_iter_kvec(&msg->msg_iter, WRITE, vec, num, size); |
d8725c86a get rid of the si... |
636 |
return sock_sendmsg(sock, msg); |
1da177e4c Linux-2.6.12-rc2 |
637 |
} |
c6d409cfd From abbffa2aa9bd... |
638 |
EXPORT_SYMBOL(kernel_sendmsg); |
1da177e4c Linux-2.6.12-rc2 |
639 |
|
8a3c245c0 net: add document... |
640 641 642 643 644 645 646 647 648 649 650 651 |
/** * kernel_sendmsg_locked - send a message through @sock (kernel-space) * @sk: sock * @msg: message header * @vec: output s/g array * @num: output s/g array length * @size: total message data size * * Builds the message data with @vec and sends it through @sock. * Returns the number of bytes sent, or an error code. * Caller must hold @sk. */ |
306b13eb3 proto_ops: Add lo... |
652 653 654 655 656 657 |
int kernel_sendmsg_locked(struct sock *sk, struct msghdr *msg, struct kvec *vec, size_t num, size_t size) { struct socket *sock = sk->sk_socket; if (!sock->ops->sendmsg_locked) |
db5980d80 net: fixes for sk... |
658 |
return sock_no_sendmsg_locked(sk, msg, size); |
306b13eb3 proto_ops: Add lo... |
659 |
|
aa563d7bc iov_iter: Separat... |
660 |
iov_iter_kvec(&msg->msg_iter, WRITE, vec, num, size); |
306b13eb3 proto_ops: Add lo... |
661 662 663 664 |
return sock->ops->sendmsg_locked(sk, msg, msg_data_left(msg)); } EXPORT_SYMBOL(kernel_sendmsg_locked); |
8605330aa tcp: fix SCM_TIME... |
665 666 667 668 669 670 671 672 673 |
static bool skb_is_err_queue(const struct sk_buff *skb) { /* pkt_type of skbs enqueued on the error queue are set to * PACKET_OUTGOING in skb_set_err_queue(). This is only safe to do * in recvmsg, since skbs received on a local socket will never * have a pkt_type of PACKET_OUTGOING. */ return skb->pkt_type == PACKET_OUTGOING; } |
b50a5c70f net: allow simult... |
674 675 676 677 678 |
/* On transmit, software and hardware timestamps are returned independently. * As the two skb clones share the hardware timestamp, which may be updated * before the software timestamp is received, a hardware TX timestamp may be * returned only if there is no software TX timestamp. Ignore false software * timestamps, which may be made in the __sock_recv_timestamp() call when the |
7f1bc6e95 sockopt: Rename S... |
679 |
* option SO_TIMESTAMP_OLD(NS) is enabled on the socket, even when the skb has a |
b50a5c70f net: allow simult... |
680 681 682 683 684 685 |
* hardware timestamp. */ static bool skb_is_swtx_tstamp(const struct sk_buff *skb, int false_tstamp) { return skb->tstamp && !false_tstamp && skb_is_err_queue(skb); } |
aad9c8c47 net: add new cont... |
686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 |
static void put_ts_pktinfo(struct msghdr *msg, struct sk_buff *skb) { struct scm_ts_pktinfo ts_pktinfo; struct net_device *orig_dev; if (!skb_mac_header_was_set(skb)) return; memset(&ts_pktinfo, 0, sizeof(ts_pktinfo)); rcu_read_lock(); orig_dev = dev_get_by_napi_id(skb_napi_id(skb)); if (orig_dev) ts_pktinfo.if_index = orig_dev->ifindex; rcu_read_unlock(); ts_pktinfo.pkt_length = skb->len - skb_mac_offset(skb); put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPING_PKTINFO, sizeof(ts_pktinfo), &ts_pktinfo); } |
92f37fd2e [NET]: Adding SO_... |
706 707 708 709 710 711 |
/* * called from sock_recv_timestamp() if sock_flag(sk, SOCK_RCVTSTAMP) */ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { |
20d494735 net: socket infra... |
712 |
int need_software_tstamp = sock_flag(sk, SOCK_RCVTSTAMP); |
887feae36 socket: Add SO_TI... |
713 |
int new_tstamp = sock_flag(sk, SOCK_TSTAMP_NEW); |
9718475e6 socket: Add SO_TI... |
714 |
struct scm_timestamping_internal tss; |
b50a5c70f net: allow simult... |
715 |
int empty = 1, false_tstamp = 0; |
20d494735 net: socket infra... |
716 717 718 719 720 |
struct skb_shared_hwtstamps *shhwtstamps = skb_hwtstamps(skb); /* Race occurred between timestamp enabling and packet receiving. Fill in the current time for now. */ |
b50a5c70f net: allow simult... |
721 |
if (need_software_tstamp && skb->tstamp == 0) { |
20d494735 net: socket infra... |
722 |
__net_timestamp(skb); |
b50a5c70f net: allow simult... |
723 724 |
false_tstamp = 1; } |
20d494735 net: socket infra... |
725 726 727 |
if (need_software_tstamp) { if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) { |
887feae36 socket: Add SO_TI... |
728 729 730 731 732 733 734 735 736 737 738 739 740 |
if (new_tstamp) { struct __kernel_sock_timeval tv; skb_get_new_timestamp(skb, &tv); put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_NEW, sizeof(tv), &tv); } else { struct __kernel_old_timeval tv; skb_get_timestamp(skb, &tv); put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD, sizeof(tv), &tv); } |
20d494735 net: socket infra... |
741 |
} else { |
887feae36 socket: Add SO_TI... |
742 743 744 745 746 747 748 749 750 751 752 753 754 |
if (new_tstamp) { struct __kernel_timespec ts; skb_get_new_timestampns(skb, &ts); put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_NEW, sizeof(ts), &ts); } else { struct timespec ts; skb_get_timestampns(skb, &ts); put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_OLD, sizeof(ts), &ts); } |
20d494735 net: socket infra... |
755 756 |
} } |
f24b9be59 net-timestamp: ex... |
757 |
memset(&tss, 0, sizeof(tss)); |
c199105d1 net-timestamp: on... |
758 |
if ((sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE) && |
9718475e6 socket: Add SO_TI... |
759 |
ktime_to_timespec64_cond(skb->tstamp, tss.ts + 0)) |
20d494735 net: socket infra... |
760 |
empty = 0; |
4d276eb6a net: remove depre... |
761 |
if (shhwtstamps && |
b9f40e21e net-timestamp: mo... |
762 |
(sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE) && |
b50a5c70f net: allow simult... |
763 |
!skb_is_swtx_tstamp(skb, false_tstamp) && |
9718475e6 socket: Add SO_TI... |
764 |
ktime_to_timespec64_cond(shhwtstamps->hwtstamp, tss.ts + 2)) { |
4d276eb6a net: remove depre... |
765 |
empty = 0; |
aad9c8c47 net: add new cont... |
766 767 768 769 |
if ((sk->sk_tsflags & SOF_TIMESTAMPING_OPT_PKTINFO) && !skb_is_err_queue(skb)) put_ts_pktinfo(msg, skb); } |
1c885808e tcp: SOF_TIMESTAM... |
770 |
if (!empty) { |
9718475e6 socket: Add SO_TI... |
771 772 773 774 |
if (sock_flag(sk, SOCK_TSTAMP_NEW)) put_cmsg_scm_timestamping64(msg, &tss); else put_cmsg_scm_timestamping(msg, &tss); |
1c885808e tcp: SOF_TIMESTAM... |
775 |
|
8605330aa tcp: fix SCM_TIME... |
776 |
if (skb_is_err_queue(skb) && skb->len && |
4ef1b2869 tcp: mark skbs wi... |
777 |
SKB_EXT_ERR(skb)->opt_stats) |
1c885808e tcp: SOF_TIMESTAM... |
778 779 780 |
put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPING_OPT_STATS, skb->len, skb->data); } |
92f37fd2e [NET]: Adding SO_... |
781 |
} |
7c81fd8bf [SOCKET]: Export ... |
782 |
EXPORT_SYMBOL_GPL(__sock_recv_timestamp); |
6e3e939f3 net: add wireless... |
783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 |
void __sock_recv_wifi_status(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) { int ack; if (!sock_flag(sk, SOCK_WIFI_STATUS)) return; if (!skb->wifi_acked_valid) return; ack = skb->wifi_acked; put_cmsg(msg, SOL_SOCKET, SCM_WIFI_STATUS, sizeof(ack), &ack); } EXPORT_SYMBOL_GPL(__sock_recv_wifi_status); |
11165f145 socket: localize ... |
798 799 |
static inline void sock_recv_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) |
3b885787e net: Generalize s... |
800 |
{ |
744d5a3e9 net: move skb->dr... |
801 |
if (sock_flag(sk, SOCK_RXQ_OVFL) && skb && SOCK_SKB_CB(skb)->dropcount) |
3b885787e net: Generalize s... |
802 |
put_cmsg(msg, SOL_SOCKET, SO_RXQ_OVFL, |
744d5a3e9 net: move skb->dr... |
803 |
sizeof(__u32), &SOCK_SKB_CB(skb)->dropcount); |
3b885787e net: Generalize s... |
804 |
} |
767dd0336 net: speedup sock... |
805 |
void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, |
3b885787e net: Generalize s... |
806 807 808 809 810 |
struct sk_buff *skb) { sock_recv_timestamp(msg, sk, skb); sock_recv_drops(msg, sk, skb); } |
767dd0336 net: speedup sock... |
811 |
EXPORT_SYMBOL_GPL(__sock_recv_ts_and_drops); |
3b885787e net: Generalize s... |
812 |
|
8c3c447b3 net: use indirect... |
813 |
INDIRECT_CALLABLE_DECLARE(int inet_recvmsg(struct socket *, struct msghdr *, |
a648a592d net: adjust socke... |
814 815 816 |
size_t, int)); INDIRECT_CALLABLE_DECLARE(int inet6_recvmsg(struct socket *, struct msghdr *, size_t, int)); |
1b7841404 net: Remove iocb ... |
817 |
static inline int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg, |
2da62906b [net] drop 'size'... |
818 |
int flags) |
1da177e4c Linux-2.6.12-rc2 |
819 |
{ |
a648a592d net: adjust socke... |
820 821 822 |
return INDIRECT_CALL_INET(sock->ops->recvmsg, inet6_recvmsg, inet_recvmsg, sock, msg, msg_data_left(msg), flags); |
1da177e4c Linux-2.6.12-rc2 |
823 |
} |
85806af0c net: fix kernel-d... |
824 825 826 827 828 829 830 831 832 |
/** * sock_recvmsg - receive a message from @sock * @sock: socket * @msg: message to receive * @flags: message flags * * Receives @msg from @sock, passing through LSM. Returns the total number * of bytes received, or an error. */ |
2da62906b [net] drop 'size'... |
833 |
int sock_recvmsg(struct socket *sock, struct msghdr *msg, int flags) |
a2e272554 net: Introduce re... |
834 |
{ |
2da62906b [net] drop 'size'... |
835 |
int err = security_socket_recvmsg(sock, msg, msg_data_left(msg), flags); |
a2e272554 net: Introduce re... |
836 |
|
2da62906b [net] drop 'size'... |
837 |
return err ?: sock_recvmsg_nosec(sock, msg, flags); |
1da177e4c Linux-2.6.12-rc2 |
838 |
} |
c6d409cfd From abbffa2aa9bd... |
839 |
EXPORT_SYMBOL(sock_recvmsg); |
1da177e4c Linux-2.6.12-rc2 |
840 |
|
c1249c0aa net: Document the... |
841 |
/** |
8a3c245c0 net: add document... |
842 843 844 845 846 847 848 |
* kernel_recvmsg - Receive a message from a socket (kernel space) * @sock: The socket to receive the message from * @msg: Received message * @vec: Input s/g array for message data * @num: Size of input s/g array * @size: Number of bytes to read * @flags: Message flags (MSG_DONTWAIT, etc...) |
c1249c0aa net: Document the... |
849 |
* |
8a3c245c0 net: add document... |
850 851 852 |
* On return the msg structure contains the scatter/gather array passed in the * vec argument. The array is modified so that it consists of the unfilled * portion of the original array. |
c1249c0aa net: Document the... |
853 |
* |
8a3c245c0 net: add document... |
854 |
* The returned value is the total number of bytes received, or an error. |
c1249c0aa net: Document the... |
855 |
*/ |
8a3c245c0 net: add document... |
856 |
|
89bddce58 [NET] socket: cod... |
857 858 |
int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size, int flags) |
1da177e4c Linux-2.6.12-rc2 |
859 860 861 |
{ mm_segment_t oldfs = get_fs(); int result; |
aa563d7bc iov_iter: Separat... |
862 |
iov_iter_kvec(&msg->msg_iter, READ, vec, num, size); |
1da177e4c Linux-2.6.12-rc2 |
863 |
set_fs(KERNEL_DS); |
2da62906b [net] drop 'size'... |
864 |
result = sock_recvmsg(sock, msg, flags); |
1da177e4c Linux-2.6.12-rc2 |
865 866 867 |
set_fs(oldfs); return result; } |
c6d409cfd From abbffa2aa9bd... |
868 |
EXPORT_SYMBOL(kernel_recvmsg); |
1da177e4c Linux-2.6.12-rc2 |
869 |
|
ce1d4d3e8 [NET]: restructur... |
870 871 |
static ssize_t sock_sendpage(struct file *file, struct page *page, int offset, size_t size, loff_t *ppos, int more) |
1da177e4c Linux-2.6.12-rc2 |
872 |
{ |
1da177e4c Linux-2.6.12-rc2 |
873 874 |
struct socket *sock; int flags; |
ce1d4d3e8 [NET]: restructur... |
875 |
sock = file->private_data; |
35f9c09fe tcp: tcp_sendpage... |
876 877 878 |
flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; /* more is a combination of MSG_MORE and MSG_SENDPAGE_NOTLAST */ flags |= more; |
ce1d4d3e8 [NET]: restructur... |
879 |
|
e69495838 Make sock_sendpag... |
880 |
return kernel_sendpage(sock, page, offset, size, flags); |
ce1d4d3e8 [NET]: restructur... |
881 |
} |
1da177e4c Linux-2.6.12-rc2 |
882 |
|
9c55e01c0 [TCP]: Splice rec... |
883 |
static ssize_t sock_splice_read(struct file *file, loff_t *ppos, |
c6d409cfd From abbffa2aa9bd... |
884 |
struct pipe_inode_info *pipe, size_t len, |
9c55e01c0 [TCP]: Splice rec... |
885 886 887 |
unsigned int flags) { struct socket *sock = file->private_data; |
997b37da1 [NET]: Make sure ... |
888 |
if (unlikely(!sock->ops->splice_read)) |
95506588d socket: do a gene... |
889 |
return generic_file_splice_read(file, ppos, pipe, len, flags); |
997b37da1 [NET]: Make sure ... |
890 |
|
9c55e01c0 [TCP]: Splice rec... |
891 892 |
return sock->ops->splice_read(sock, ppos, pipe, len, flags); } |
8ae5e030f net: switch socke... |
893 |
static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to) |
ce1d4d3e8 [NET]: restructur... |
894 |
{ |
6d6523302 net/socket.c: fol... |
895 896 |
struct file *file = iocb->ki_filp; struct socket *sock = file->private_data; |
0345f9313 net: socket: add ... |
897 898 |
struct msghdr msg = {.msg_iter = *to, .msg_iocb = iocb}; |
8ae5e030f net: switch socke... |
899 |
ssize_t res; |
ce1d4d3e8 [NET]: restructur... |
900 |
|
b1954fda6 net: make socket ... |
901 |
if (file->f_flags & O_NONBLOCK || (iocb->ki_flags & IOCB_NOWAIT)) |
8ae5e030f net: switch socke... |
902 903 904 |
msg.msg_flags = MSG_DONTWAIT; if (iocb->ki_pos != 0) |
1da177e4c Linux-2.6.12-rc2 |
905 |
return -ESPIPE; |
027445c37 [PATCH] Vectorize... |
906 |
|
66ee59af6 fs: remove ki_nbytes |
907 |
if (!iov_iter_count(to)) /* Match SYS5 behaviour */ |
1da177e4c Linux-2.6.12-rc2 |
908 |
return 0; |
2da62906b [net] drop 'size'... |
909 |
res = sock_recvmsg(sock, &msg, msg.msg_flags); |
8ae5e030f net: switch socke... |
910 911 |
*to = msg.msg_iter; return res; |
1da177e4c Linux-2.6.12-rc2 |
912 |
} |
8ae5e030f net: switch socke... |
913 |
static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from) |
ce1d4d3e8 [NET]: restructur... |
914 |
{ |
6d6523302 net/socket.c: fol... |
915 916 |
struct file *file = iocb->ki_filp; struct socket *sock = file->private_data; |
0345f9313 net: socket: add ... |
917 918 |
struct msghdr msg = {.msg_iter = *from, .msg_iocb = iocb}; |
8ae5e030f net: switch socke... |
919 |
ssize_t res; |
1da177e4c Linux-2.6.12-rc2 |
920 |
|
8ae5e030f net: switch socke... |
921 |
if (iocb->ki_pos != 0) |
ce1d4d3e8 [NET]: restructur... |
922 |
return -ESPIPE; |
027445c37 [PATCH] Vectorize... |
923 |
|
b1954fda6 net: make socket ... |
924 |
if (file->f_flags & O_NONBLOCK || (iocb->ki_flags & IOCB_NOWAIT)) |
8ae5e030f net: switch socke... |
925 |
msg.msg_flags = MSG_DONTWAIT; |
6d6523302 net/socket.c: fol... |
926 927 |
if (sock->type == SOCK_SEQPACKET) msg.msg_flags |= MSG_EOR; |
d8725c86a get rid of the si... |
928 |
res = sock_sendmsg(sock, &msg); |
8ae5e030f net: switch socke... |
929 930 |
*from = msg.msg_iter; return res; |
1da177e4c Linux-2.6.12-rc2 |
931 |
} |
1da177e4c Linux-2.6.12-rc2 |
932 933 934 935 |
/* * Atomic setting of ioctl hooks to avoid race * with module unload. */ |
4a3e2f711 [NET] sem2mutex: ... |
936 |
static DEFINE_MUTEX(br_ioctl_mutex); |
c6d409cfd From abbffa2aa9bd... |
937 |
static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg); |
1da177e4c Linux-2.6.12-rc2 |
938 |
|
881d966b4 [NET]: Make the d... |
939 |
void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *)) |
1da177e4c Linux-2.6.12-rc2 |
940 |
{ |
4a3e2f711 [NET] sem2mutex: ... |
941 |
mutex_lock(&br_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
942 |
br_ioctl_hook = hook; |
4a3e2f711 [NET] sem2mutex: ... |
943 |
mutex_unlock(&br_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
944 945 |
} EXPORT_SYMBOL(brioctl_set); |
4a3e2f711 [NET] sem2mutex: ... |
946 |
static DEFINE_MUTEX(vlan_ioctl_mutex); |
881d966b4 [NET]: Make the d... |
947 |
static int (*vlan_ioctl_hook) (struct net *, void __user *arg); |
1da177e4c Linux-2.6.12-rc2 |
948 |
|
881d966b4 [NET]: Make the d... |
949 |
void vlan_ioctl_set(int (*hook) (struct net *, void __user *)) |
1da177e4c Linux-2.6.12-rc2 |
950 |
{ |
4a3e2f711 [NET] sem2mutex: ... |
951 |
mutex_lock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
952 |
vlan_ioctl_hook = hook; |
4a3e2f711 [NET] sem2mutex: ... |
953 |
mutex_unlock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
954 955 |
} EXPORT_SYMBOL(vlan_ioctl_set); |
4a3e2f711 [NET] sem2mutex: ... |
956 |
static DEFINE_MUTEX(dlci_ioctl_mutex); |
89bddce58 [NET] socket: cod... |
957 |
static int (*dlci_ioctl_hook) (unsigned int, void __user *); |
1da177e4c Linux-2.6.12-rc2 |
958 |
|
89bddce58 [NET] socket: cod... |
959 |
void dlci_ioctl_set(int (*hook) (unsigned int, void __user *)) |
1da177e4c Linux-2.6.12-rc2 |
960 |
{ |
4a3e2f711 [NET] sem2mutex: ... |
961 |
mutex_lock(&dlci_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
962 |
dlci_ioctl_hook = hook; |
4a3e2f711 [NET] sem2mutex: ... |
963 |
mutex_unlock(&dlci_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
964 965 |
} EXPORT_SYMBOL(dlci_ioctl_set); |
6b96018b2 compat: move sock... |
966 |
static long sock_do_ioctl(struct net *net, struct socket *sock, |
63ff03ab7 Revert "socket: f... |
967 |
unsigned int cmd, unsigned long arg) |
6b96018b2 compat: move sock... |
968 969 970 971 972 973 974 975 976 977 |
{ int err; void __user *argp = (void __user *)arg; err = sock->ops->ioctl(sock, cmd, arg); /* * If this ioctl is unknown try to hand it down * to the NIC driver. */ |
36fd633ec net: separate SIO... |
978 979 |
if (err != -ENOIOCTLCMD) return err; |
6b96018b2 compat: move sock... |
980 |
|
36fd633ec net: separate SIO... |
981 982 983 984 985 986 987 988 989 |
if (cmd == SIOCGIFCONF) { struct ifconf ifc; if (copy_from_user(&ifc, argp, sizeof(struct ifconf))) return -EFAULT; rtnl_lock(); err = dev_ifconf(net, &ifc, sizeof(struct ifreq)); rtnl_unlock(); if (!err && copy_to_user(argp, &ifc, sizeof(struct ifconf))) err = -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
990 991 992 |
} else { struct ifreq ifr; bool need_copyout; |
63ff03ab7 Revert "socket: f... |
993 |
if (copy_from_user(&ifr, argp, sizeof(struct ifreq))) |
44c02a2c3 dev_ioctl(): move... |
994 995 996 |
return -EFAULT; err = dev_ioctl(net, cmd, &ifr, &need_copyout); if (!err && need_copyout) |
63ff03ab7 Revert "socket: f... |
997 |
if (copy_to_user(argp, &ifr, sizeof(struct ifreq))) |
44c02a2c3 dev_ioctl(): move... |
998 |
return -EFAULT; |
36fd633ec net: separate SIO... |
999 |
} |
6b96018b2 compat: move sock... |
1000 1001 |
return err; } |
1da177e4c Linux-2.6.12-rc2 |
1002 1003 1004 1005 |
/* * With an ioctl, arg may well be a user mode pointer, but we don't know * what to do with it - that's up to the protocol still. */ |
8a3c245c0 net: add document... |
1006 1007 1008 1009 1010 1011 |
/** * get_net_ns - increment the refcount of the network namespace * @ns: common namespace (net) * * Returns the net's common namespace. */ |
d8d211a2a net: Make extern ... |
1012 |
struct ns_common *get_net_ns(struct ns_common *ns) |
c62cce2ca net: add an ioctl... |
1013 1014 1015 |
{ return &get_net(container_of(ns, struct net, ns))->ns; } |
d8d211a2a net: Make extern ... |
1016 |
EXPORT_SYMBOL_GPL(get_net_ns); |
c62cce2ca net: add an ioctl... |
1017 |
|
1da177e4c Linux-2.6.12-rc2 |
1018 1019 1020 |
static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) { struct socket *sock; |
881d966b4 [NET]: Make the d... |
1021 |
struct sock *sk; |
1da177e4c Linux-2.6.12-rc2 |
1022 1023 |
void __user *argp = (void __user *)arg; int pid, err; |
881d966b4 [NET]: Make the d... |
1024 |
struct net *net; |
1da177e4c Linux-2.6.12-rc2 |
1025 |
|
b69aee04f [NET]: Use file->... |
1026 |
sock = file->private_data; |
881d966b4 [NET]: Make the d... |
1027 |
sk = sock->sk; |
3b1e0a655 [NET] NETNS: Omit... |
1028 |
net = sock_net(sk); |
44c02a2c3 dev_ioctl(): move... |
1029 1030 1031 1032 1033 1034 1035 1036 1037 |
if (unlikely(cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15))) { struct ifreq ifr; bool need_copyout; if (copy_from_user(&ifr, argp, sizeof(struct ifreq))) return -EFAULT; err = dev_ioctl(net, cmd, &ifr, &need_copyout); if (!err && need_copyout) if (copy_to_user(argp, &ifr, sizeof(struct ifreq))) return -EFAULT; |
1da177e4c Linux-2.6.12-rc2 |
1038 |
} else |
3d23e349d wext: refactor |
1039 |
#ifdef CONFIG_WEXT_CORE |
1da177e4c Linux-2.6.12-rc2 |
1040 |
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) { |
b1b0c2450 lift handling of ... |
1041 |
err = wext_handle_ioctl(net, cmd, argp); |
1da177e4c Linux-2.6.12-rc2 |
1042 |
} else |
3d23e349d wext: refactor |
1043 |
#endif |
89bddce58 [NET] socket: cod... |
1044 |
switch (cmd) { |
1da177e4c Linux-2.6.12-rc2 |
1045 1046 1047 1048 1049 |
case FIOSETOWN: case SIOCSPGRP: err = -EFAULT; if (get_user(pid, (int __user *)argp)) break; |
393cc3f51 fs/fcntl: f_setow... |
1050 |
err = f_setown(sock->file, pid, 1); |
1da177e4c Linux-2.6.12-rc2 |
1051 1052 1053 |
break; case FIOGETOWN: case SIOCGPGRP: |
609d7fa95 [PATCH] file: mod... |
1054 |
err = put_user(f_getown(sock->file), |
89bddce58 [NET] socket: cod... |
1055 |
(int __user *)argp); |
1da177e4c Linux-2.6.12-rc2 |
1056 1057 1058 1059 1060 1061 1062 1063 |
break; case SIOCGIFBR: case SIOCSIFBR: case SIOCBRADDBR: case SIOCBRDELBR: err = -ENOPKG; if (!br_ioctl_hook) request_module("bridge"); |
4a3e2f711 [NET] sem2mutex: ... |
1064 |
mutex_lock(&br_ioctl_mutex); |
89bddce58 [NET] socket: cod... |
1065 |
if (br_ioctl_hook) |
881d966b4 [NET]: Make the d... |
1066 |
err = br_ioctl_hook(net, cmd, argp); |
4a3e2f711 [NET] sem2mutex: ... |
1067 |
mutex_unlock(&br_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1068 1069 1070 1071 1072 1073 |
break; case SIOCGIFVLAN: case SIOCSIFVLAN: err = -ENOPKG; if (!vlan_ioctl_hook) request_module("8021q"); |
4a3e2f711 [NET] sem2mutex: ... |
1074 |
mutex_lock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1075 |
if (vlan_ioctl_hook) |
881d966b4 [NET]: Make the d... |
1076 |
err = vlan_ioctl_hook(net, argp); |
4a3e2f711 [NET] sem2mutex: ... |
1077 |
mutex_unlock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1078 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1079 1080 1081 1082 1083 |
case SIOCADDDLCI: case SIOCDELDLCI: err = -ENOPKG; if (!dlci_ioctl_hook) request_module("dlci"); |
7512cbf6e [DLCI]: Fix tiny ... |
1084 1085 |
mutex_lock(&dlci_ioctl_mutex); if (dlci_ioctl_hook) |
1da177e4c Linux-2.6.12-rc2 |
1086 |
err = dlci_ioctl_hook(cmd, argp); |
7512cbf6e [DLCI]: Fix tiny ... |
1087 |
mutex_unlock(&dlci_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1088 |
break; |
c62cce2ca net: add an ioctl... |
1089 1090 1091 1092 1093 1094 1095 |
case SIOCGSKNS: err = -EPERM; if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) break; err = open_related_ns(&net->ns, get_net_ns); break; |
0768e1707 net: socket: impl... |
1096 1097 |
case SIOCGSTAMP_OLD: case SIOCGSTAMPNS_OLD: |
c7cbdbf29 net: rework SIOCG... |
1098 1099 1100 1101 1102 |
if (!sock->ops->gettstamp) { err = -ENOIOCTLCMD; break; } err = sock->ops->gettstamp(sock, argp, |
0768e1707 net: socket: impl... |
1103 1104 |
cmd == SIOCGSTAMP_OLD, !IS_ENABLED(CONFIG_64BIT)); |
60747828e net: socket: Fix ... |
1105 |
break; |
0768e1707 net: socket: impl... |
1106 1107 1108 1109 1110 1111 1112 1113 1114 |
case SIOCGSTAMP_NEW: case SIOCGSTAMPNS_NEW: if (!sock->ops->gettstamp) { err = -ENOIOCTLCMD; break; } err = sock->ops->gettstamp(sock, argp, cmd == SIOCGSTAMP_NEW, false); |
c7cbdbf29 net: rework SIOCG... |
1115 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1116 |
default: |
63ff03ab7 Revert "socket: f... |
1117 |
err = sock_do_ioctl(net, sock, cmd, arg); |
1da177e4c Linux-2.6.12-rc2 |
1118 |
break; |
89bddce58 [NET] socket: cod... |
1119 |
} |
1da177e4c Linux-2.6.12-rc2 |
1120 1121 |
return err; } |
8a3c245c0 net: add document... |
1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 |
/** * sock_create_lite - creates a socket * @family: protocol family (AF_INET, ...) * @type: communication type (SOCK_STREAM, ...) * @protocol: protocol (0, ...) * @res: new socket * * Creates a new socket and assigns it to @res, passing through LSM. * The new socket initialization is not complete, see kernel_accept(). * Returns 0 or an error. On failure @res is set to %NULL. * This function internally uses GFP_KERNEL. */ |
1da177e4c Linux-2.6.12-rc2 |
1134 1135 1136 1137 |
int sock_create_lite(int family, int type, int protocol, struct socket **res) { int err; struct socket *sock = NULL; |
89bddce58 [NET] socket: cod... |
1138 |
|
1da177e4c Linux-2.6.12-rc2 |
1139 1140 1141 1142 1143 1144 1145 1146 1147 |
err = security_socket_create(family, type, protocol, 1); if (err) goto out; sock = sock_alloc(); if (!sock) { err = -ENOMEM; goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1148 |
sock->type = type; |
7420ed23a [NetLabel]: SELin... |
1149 1150 1151 |
err = security_socket_post_create(sock, family, type, protocol, 1); if (err) goto out_release; |
1da177e4c Linux-2.6.12-rc2 |
1152 1153 1154 |
out: *res = sock; return err; |
7420ed23a [NetLabel]: SELin... |
1155 1156 1157 1158 |
out_release: sock_release(sock); sock = NULL; goto out; |
1da177e4c Linux-2.6.12-rc2 |
1159 |
} |
c6d409cfd From abbffa2aa9bd... |
1160 |
EXPORT_SYMBOL(sock_create_lite); |
1da177e4c Linux-2.6.12-rc2 |
1161 1162 |
/* No kernel lock held - perfect */ |
ade994f4f net: annotate ->p... |
1163 |
static __poll_t sock_poll(struct file *file, poll_table *wait) |
1da177e4c Linux-2.6.12-rc2 |
1164 |
{ |
3cafb3763 net: refactor soc... |
1165 |
struct socket *sock = file->private_data; |
a331de3bf net: remove sock_... |
1166 |
__poll_t events = poll_requested_events(wait), flag = 0; |
2d48d67fa net: poll/select ... |
1167 |
|
e88958e63 net: handle NULL ... |
1168 1169 |
if (!sock->ops->poll) return 0; |
f641f13b9 net: remove sock_... |
1170 |
|
a331de3bf net: remove sock_... |
1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 |
if (sk_can_busy_loop(sock->sk)) { /* poll once if requested by the syscall */ if (events & POLL_BUSY_LOOP) sk_busy_loop(sock->sk, 1); /* if this socket can poll_ll, tell the system call */ flag = POLL_BUSY_LOOP; } return sock->ops->poll(file, sock, wait) | flag; |
1da177e4c Linux-2.6.12-rc2 |
1181 |
} |
89bddce58 [NET] socket: cod... |
1182 |
static int sock_mmap(struct file *file, struct vm_area_struct *vma) |
1da177e4c Linux-2.6.12-rc2 |
1183 |
{ |
b69aee04f [NET]: Use file->... |
1184 |
struct socket *sock = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1185 1186 1187 |
return sock->ops->mmap(file, sock, vma); } |
20380731b [NET]: Fix sparse... |
1188 |
static int sock_close(struct inode *inode, struct file *filp) |
1da177e4c Linux-2.6.12-rc2 |
1189 |
{ |
6d8c50dcb socket: close rac... |
1190 |
__sock_release(SOCKET_I(inode), inode); |
1da177e4c Linux-2.6.12-rc2 |
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 |
return 0; } /* * Update the socket async list * * Fasync_list locking strategy. * * 1. fasync_list is modified only under process context socket lock * i.e. under semaphore. * 2. fasync_list is used under read_lock(&sk->sk_callback_lock) |
989a29792 fasync: RCU and f... |
1202 |
* or under socket lock |
1da177e4c Linux-2.6.12-rc2 |
1203 1204 1205 1206 |
*/ static int sock_fasync(int fd, struct file *filp, int on) { |
989a29792 fasync: RCU and f... |
1207 1208 |
struct socket *sock = filp->private_data; struct sock *sk = sock->sk; |
333f7909a coallocate socket... |
1209 |
struct socket_wq *wq = &sock->wq; |
1da177e4c Linux-2.6.12-rc2 |
1210 |
|
989a29792 fasync: RCU and f... |
1211 |
if (sk == NULL) |
1da177e4c Linux-2.6.12-rc2 |
1212 |
return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1213 1214 |
lock_sock(sk); |
eaefd1105 net: add __rcu an... |
1215 |
fasync_helper(fd, filp, on, &wq->fasync_list); |
1da177e4c Linux-2.6.12-rc2 |
1216 |
|
eaefd1105 net: add __rcu an... |
1217 |
if (!wq->fasync_list) |
989a29792 fasync: RCU and f... |
1218 1219 |
sock_reset_flag(sk, SOCK_FASYNC); else |
bcdce7195 net: speedup sk_w... |
1220 |
sock_set_flag(sk, SOCK_FASYNC); |
1da177e4c Linux-2.6.12-rc2 |
1221 |
|
989a29792 fasync: RCU and f... |
1222 |
release_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1223 1224 |
return 0; } |
ceb5d58b2 net: fix sock_wak... |
1225 |
/* This function may be called only under rcu_lock */ |
1da177e4c Linux-2.6.12-rc2 |
1226 |
|
ceb5d58b2 net: fix sock_wak... |
1227 |
int sock_wake_async(struct socket_wq *wq, int how, int band) |
1da177e4c Linux-2.6.12-rc2 |
1228 |
{ |
ceb5d58b2 net: fix sock_wak... |
1229 |
if (!wq || !wq->fasync_list) |
1da177e4c Linux-2.6.12-rc2 |
1230 |
return -1; |
ceb5d58b2 net: fix sock_wak... |
1231 |
|
89bddce58 [NET] socket: cod... |
1232 |
switch (how) { |
8d8ad9d7c [NET]: Name magic... |
1233 |
case SOCK_WAKE_WAITD: |
ceb5d58b2 net: fix sock_wak... |
1234 |
if (test_bit(SOCKWQ_ASYNC_WAITDATA, &wq->flags)) |
1da177e4c Linux-2.6.12-rc2 |
1235 1236 |
break; goto call_kill; |
8d8ad9d7c [NET]: Name magic... |
1237 |
case SOCK_WAKE_SPACE: |
ceb5d58b2 net: fix sock_wak... |
1238 |
if (!test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags)) |
1da177e4c Linux-2.6.12-rc2 |
1239 1240 |
break; /* fall through */ |
8d8ad9d7c [NET]: Name magic... |
1241 |
case SOCK_WAKE_IO: |
89bddce58 [NET] socket: cod... |
1242 |
call_kill: |
438154823 net: sock_def_rea... |
1243 |
kill_fasync(&wq->fasync_list, SIGIO, band); |
1da177e4c Linux-2.6.12-rc2 |
1244 |
break; |
8d8ad9d7c [NET]: Name magic... |
1245 |
case SOCK_WAKE_URG: |
438154823 net: sock_def_rea... |
1246 |
kill_fasync(&wq->fasync_list, SIGURG, band); |
1da177e4c Linux-2.6.12-rc2 |
1247 |
} |
ceb5d58b2 net: fix sock_wak... |
1248 |
|
1da177e4c Linux-2.6.12-rc2 |
1249 1250 |
return 0; } |
c6d409cfd From abbffa2aa9bd... |
1251 |
EXPORT_SYMBOL(sock_wake_async); |
1da177e4c Linux-2.6.12-rc2 |
1252 |
|
8a3c245c0 net: add document... |
1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 |
/** * __sock_create - creates a socket * @net: net namespace * @family: protocol family (AF_INET, ...) * @type: communication type (SOCK_STREAM, ...) * @protocol: protocol (0, ...) * @res: new socket * @kern: boolean for kernel space sockets * * Creates a new socket and assigns it to @res, passing through LSM. * Returns 0 or an error. On failure @res is set to %NULL. @kern must * be set to true if the socket resides in kernel space. * This function internally uses GFP_KERNEL. */ |
721db93a5 net: Export __soc... |
1267 |
int __sock_create(struct net *net, int family, int type, int protocol, |
89bddce58 [NET] socket: cod... |
1268 |
struct socket **res, int kern) |
1da177e4c Linux-2.6.12-rc2 |
1269 1270 1271 |
{ int err; struct socket *sock; |
55737fda0 [NET]: socket fam... |
1272 |
const struct net_proto_family *pf; |
1da177e4c Linux-2.6.12-rc2 |
1273 1274 |
/* |
89bddce58 [NET] socket: cod... |
1275 |
* Check protocol is in range |
1da177e4c Linux-2.6.12-rc2 |
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 |
*/ if (family < 0 || family >= NPROTO) return -EAFNOSUPPORT; if (type < 0 || type >= SOCK_MAX) return -EINVAL; /* Compatibility. This uglymoron is moved from INET layer to here to avoid deadlock in module load. */ if (family == PF_INET && type == SOCK_PACKET) { |
f3c986908 net: socket: use ... |
1288 1289 1290 |
pr_info_once("%s uses obsolete (PF_INET,SOCK_PACKET) ", current->comm); |
1da177e4c Linux-2.6.12-rc2 |
1291 1292 1293 1294 1295 1296 |
family = PF_PACKET; } err = security_socket_create(family, type, protocol, kern); if (err) return err; |
89bddce58 [NET] socket: cod... |
1297 |
|
55737fda0 [NET]: socket fam... |
1298 1299 1300 1301 1302 1303 1304 |
/* * Allocate the socket and allow the family to set things up. if * the protocol is 0, the family is instructed to select an appropriate * default. */ sock = sock_alloc(); if (!sock) { |
e87cc4728 net: Convert net_... |
1305 1306 |
net_warn_ratelimited("socket: no more sockets "); |
55737fda0 [NET]: socket fam... |
1307 1308 1309 1310 1311 |
return -ENFILE; /* Not exactly a match, but its the closest posix thing */ } sock->type = type; |
95a5afca4 net: Remove CONFI... |
1312 |
#ifdef CONFIG_MODULES |
89bddce58 [NET] socket: cod... |
1313 1314 1315 |
/* Attempt to load a protocol module if the find failed. * * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user |
1da177e4c Linux-2.6.12-rc2 |
1316 1317 1318 |
* requested real, full-featured networking support upon configuration. * Otherwise module support will break! */ |
190683a9d net: net_families... |
1319 |
if (rcu_access_pointer(net_families[family]) == NULL) |
89bddce58 [NET] socket: cod... |
1320 |
request_module("net-pf-%d", family); |
1da177e4c Linux-2.6.12-rc2 |
1321 |
#endif |
55737fda0 [NET]: socket fam... |
1322 1323 1324 1325 1326 |
rcu_read_lock(); pf = rcu_dereference(net_families[family]); err = -EAFNOSUPPORT; if (!pf) goto out_release; |
1da177e4c Linux-2.6.12-rc2 |
1327 1328 1329 1330 1331 |
/* * We will call the ->create function, that possibly is in a loadable * module, so we have to bump that loadable module refcnt first. */ |
55737fda0 [NET]: socket fam... |
1332 |
if (!try_module_get(pf->owner)) |
1da177e4c Linux-2.6.12-rc2 |
1333 |
goto out_release; |
55737fda0 [NET]: socket fam... |
1334 1335 |
/* Now protected by module ref count */ rcu_read_unlock(); |
3f378b684 net: pass kern to... |
1336 |
err = pf->create(net, sock, protocol, kern); |
55737fda0 [NET]: socket fam... |
1337 |
if (err < 0) |
1da177e4c Linux-2.6.12-rc2 |
1338 |
goto out_module_put; |
a79af59ef [NET]: Fix module... |
1339 |
|
1da177e4c Linux-2.6.12-rc2 |
1340 1341 1342 1343 |
/* * Now to bump the refcnt of the [loadable] module that owns this * socket at sock_release time we decrement its refcnt. */ |
55737fda0 [NET]: socket fam... |
1344 1345 |
if (!try_module_get(sock->ops->owner)) goto out_module_busy; |
1da177e4c Linux-2.6.12-rc2 |
1346 1347 1348 1349 |
/* * Now that we're done with the ->create function, the [loadable] * module can have its refcnt decremented */ |
55737fda0 [NET]: socket fam... |
1350 |
module_put(pf->owner); |
7420ed23a [NetLabel]: SELin... |
1351 1352 |
err = security_socket_post_create(sock, family, type, protocol, kern); if (err) |
3b1855255 [NET]: Fix unbala... |
1353 |
goto out_sock_release; |
55737fda0 [NET]: socket fam... |
1354 |
*res = sock; |
1da177e4c Linux-2.6.12-rc2 |
1355 |
|
55737fda0 [NET]: socket fam... |
1356 1357 1358 1359 |
return 0; out_module_busy: err = -EAFNOSUPPORT; |
1da177e4c Linux-2.6.12-rc2 |
1360 |
out_module_put: |
55737fda0 [NET]: socket fam... |
1361 1362 1363 |
sock->ops = NULL; module_put(pf->owner); out_sock_release: |
1da177e4c Linux-2.6.12-rc2 |
1364 |
sock_release(sock); |
55737fda0 [NET]: socket fam... |
1365 1366 1367 1368 1369 |
return err; out_release: rcu_read_unlock(); goto out_sock_release; |
1da177e4c Linux-2.6.12-rc2 |
1370 |
} |
721db93a5 net: Export __soc... |
1371 |
EXPORT_SYMBOL(__sock_create); |
1da177e4c Linux-2.6.12-rc2 |
1372 |
|
8a3c245c0 net: add document... |
1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 |
/** * sock_create - creates a socket * @family: protocol family (AF_INET, ...) * @type: communication type (SOCK_STREAM, ...) * @protocol: protocol (0, ...) * @res: new socket * * A wrapper around __sock_create(). * Returns 0 or an error. This function internally uses GFP_KERNEL. */ |
1da177e4c Linux-2.6.12-rc2 |
1383 1384 |
int sock_create(int family, int type, int protocol, struct socket **res) { |
1b8d7ae42 [NET]: Make socke... |
1385 |
return __sock_create(current->nsproxy->net_ns, family, type, protocol, res, 0); |
1da177e4c Linux-2.6.12-rc2 |
1386 |
} |
c6d409cfd From abbffa2aa9bd... |
1387 |
EXPORT_SYMBOL(sock_create); |
1da177e4c Linux-2.6.12-rc2 |
1388 |
|
8a3c245c0 net: add document... |
1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 |
/** * sock_create_kern - creates a socket (kernel space) * @net: net namespace * @family: protocol family (AF_INET, ...) * @type: communication type (SOCK_STREAM, ...) * @protocol: protocol (0, ...) * @res: new socket * * A wrapper around __sock_create(). * Returns 0 or an error. This function internally uses GFP_KERNEL. */ |
eeb1bd5c4 net: Add a struct... |
1400 |
int sock_create_kern(struct net *net, int family, int type, int protocol, struct socket **res) |
1da177e4c Linux-2.6.12-rc2 |
1401 |
{ |
eeb1bd5c4 net: Add a struct... |
1402 |
return __sock_create(net, family, type, protocol, res, 1); |
1da177e4c Linux-2.6.12-rc2 |
1403 |
} |
c6d409cfd From abbffa2aa9bd... |
1404 |
EXPORT_SYMBOL(sock_create_kern); |
1da177e4c Linux-2.6.12-rc2 |
1405 |
|
9d6a15c3f net: socket: add ... |
1406 |
int __sys_socket(int family, int type, int protocol) |
1da177e4c Linux-2.6.12-rc2 |
1407 1408 1409 |
{ int retval; struct socket *sock; |
a677a039b flag parameters: ... |
1410 |
int flags; |
e38b36f32 flag parameters: ... |
1411 1412 1413 1414 1415 |
/* Check the SOCK_* constants for consistency. */ BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC); BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK); BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK); BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK); |
a677a039b flag parameters: ... |
1416 |
flags = type & ~SOCK_TYPE_MASK; |
77d272005 flag parameters: ... |
1417 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039b flag parameters: ... |
1418 1419 |
return -EINVAL; type &= SOCK_TYPE_MASK; |
1da177e4c Linux-2.6.12-rc2 |
1420 |
|
aaca0bdca flag parameters: ... |
1421 1422 |
if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
1da177e4c Linux-2.6.12-rc2 |
1423 1424 |
retval = sock_create(family, type, protocol, &sock); if (retval < 0) |
8e1611e23 make sock_alloc_f... |
1425 |
return retval; |
1da177e4c Linux-2.6.12-rc2 |
1426 |
|
8e1611e23 make sock_alloc_f... |
1427 |
return sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK)); |
1da177e4c Linux-2.6.12-rc2 |
1428 |
} |
9d6a15c3f net: socket: add ... |
1429 1430 1431 1432 |
SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) { return __sys_socket(family, type, protocol); } |
1da177e4c Linux-2.6.12-rc2 |
1433 1434 1435 |
/* * Create a pair of connected sockets. */ |
6debc8d83 net: socket: add ... |
1436 |
int __sys_socketpair(int family, int type, int protocol, int __user *usockvec) |
1da177e4c Linux-2.6.12-rc2 |
1437 1438 1439 |
{ struct socket *sock1, *sock2; int fd1, fd2, err; |
db3495099 [PATCH] AUDIT_FD_... |
1440 |
struct file *newfile1, *newfile2; |
a677a039b flag parameters: ... |
1441 1442 1443 |
int flags; flags = type & ~SOCK_TYPE_MASK; |
77d272005 flag parameters: ... |
1444 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039b flag parameters: ... |
1445 1446 |
return -EINVAL; type &= SOCK_TYPE_MASK; |
1da177e4c Linux-2.6.12-rc2 |
1447 |
|
aaca0bdca flag parameters: ... |
1448 1449 |
if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
1da177e4c Linux-2.6.12-rc2 |
1450 |
/* |
016a266bd socketpair(): all... |
1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 |
* reserve descriptors and make sure we won't fail * to return them to userland. */ fd1 = get_unused_fd_flags(flags); if (unlikely(fd1 < 0)) return fd1; fd2 = get_unused_fd_flags(flags); if (unlikely(fd2 < 0)) { put_unused_fd(fd1); return fd2; } err = put_user(fd1, &usockvec[0]); if (err) goto out; err = put_user(fd2, &usockvec[1]); if (err) goto out; /* |
1da177e4c Linux-2.6.12-rc2 |
1473 1474 1475 1476 1477 |
* Obtain the first socket and check if the underlying protocol * supports the socketpair call. */ err = sock_create(family, type, protocol, &sock1); |
016a266bd socketpair(): all... |
1478 |
if (unlikely(err < 0)) |
1da177e4c Linux-2.6.12-rc2 |
1479 1480 1481 |
goto out; err = sock_create(family, type, protocol, &sock2); |
016a266bd socketpair(): all... |
1482 1483 1484 |
if (unlikely(err < 0)) { sock_release(sock1); goto out; |
bf3c23d17 [NET]: Fix error ... |
1485 |
} |
d73aa2867 net: handle error... |
1486 |
|
d47cd9450 net: hook socketp... |
1487 1488 1489 1490 1491 1492 |
err = security_socket_socketpair(sock1, sock2); if (unlikely(err)) { sock_release(sock2); sock_release(sock1); goto out; } |
016a266bd socketpair(): all... |
1493 1494 1495 1496 1497 |
err = sock1->ops->socketpair(sock1, sock2); if (unlikely(err < 0)) { sock_release(sock2); sock_release(sock1); goto out; |
284076305 take descriptor h... |
1498 |
} |
aab174f0d Merge branch 'for... |
1499 |
newfile1 = sock_alloc_file(sock1, flags, NULL); |
b5ffe6344 net: Drop unlikel... |
1500 |
if (IS_ERR(newfile1)) { |
284076305 take descriptor h... |
1501 |
err = PTR_ERR(newfile1); |
016a266bd socketpair(): all... |
1502 1503 |
sock_release(sock2); goto out; |
284076305 take descriptor h... |
1504 |
} |
aab174f0d Merge branch 'for... |
1505 |
newfile2 = sock_alloc_file(sock2, flags, NULL); |
284076305 take descriptor h... |
1506 1507 |
if (IS_ERR(newfile2)) { err = PTR_ERR(newfile2); |
016a266bd socketpair(): all... |
1508 1509 |
fput(newfile1); goto out; |
db3495099 [PATCH] AUDIT_FD_... |
1510 |
} |
157cf649a sanitize audit_fd... |
1511 |
audit_fd_pair(fd1, fd2); |
d73aa2867 net: handle error... |
1512 |
|
db3495099 [PATCH] AUDIT_FD_... |
1513 1514 |
fd_install(fd1, newfile1); fd_install(fd2, newfile2); |
d73aa2867 net: handle error... |
1515 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
1516 |
|
016a266bd socketpair(): all... |
1517 |
out: |
d73aa2867 net: handle error... |
1518 |
put_unused_fd(fd2); |
d73aa2867 net: handle error... |
1519 |
put_unused_fd(fd1); |
1da177e4c Linux-2.6.12-rc2 |
1520 1521 |
return err; } |
6debc8d83 net: socket: add ... |
1522 1523 1524 1525 1526 |
SYSCALL_DEFINE4(socketpair, int, family, int, type, int, protocol, int __user *, usockvec) { return __sys_socketpair(family, type, protocol, usockvec); } |
1da177e4c Linux-2.6.12-rc2 |
1527 1528 1529 1530 1531 1532 1533 |
/* * Bind a name to a socket. Nothing much to do here since it's * the protocol's responsibility to handle the local address. * * We move the socket address to kernel space before we call * the protocol layer (having also checked the address is ok). */ |
a87d35d87 net: socket: add ... |
1534 |
int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen) |
1da177e4c Linux-2.6.12-rc2 |
1535 1536 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1537 |
struct sockaddr_storage address; |
6cb153cab [NET]: use fget_l... |
1538 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1539 |
|
89bddce58 [NET] socket: cod... |
1540 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
e71a4783a [NET] core: white... |
1541 |
if (sock) { |
43db362d3 net: get rid of s... |
1542 |
err = move_addr_to_kernel(umyaddr, addrlen, &address); |
068b88cc1 socket: Tighten n... |
1543 |
if (!err) { |
89bddce58 [NET] socket: cod... |
1544 |
err = security_socket_bind(sock, |
230b18392 net: Use standard... |
1545 |
(struct sockaddr *)&address, |
89bddce58 [NET] socket: cod... |
1546 |
addrlen); |
6cb153cab [NET]: use fget_l... |
1547 1548 |
if (!err) err = sock->ops->bind(sock, |
89bddce58 [NET] socket: cod... |
1549 |
(struct sockaddr *) |
230b18392 net: Use standard... |
1550 |
&address, addrlen); |
1da177e4c Linux-2.6.12-rc2 |
1551 |
} |
6cb153cab [NET]: use fget_l... |
1552 |
fput_light(sock->file, fput_needed); |
89bddce58 [NET] socket: cod... |
1553 |
} |
1da177e4c Linux-2.6.12-rc2 |
1554 1555 |
return err; } |
a87d35d87 net: socket: add ... |
1556 1557 1558 1559 |
SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) { return __sys_bind(fd, umyaddr, addrlen); } |
1da177e4c Linux-2.6.12-rc2 |
1560 1561 1562 1563 1564 |
/* * Perform a listen. Basically, we allow the protocol to do anything * necessary for a listen, and if that works, we mark the socket as * ready for listening. */ |
25e290eed net: socket: add ... |
1565 |
int __sys_listen(int fd, int backlog) |
1da177e4c Linux-2.6.12-rc2 |
1566 1567 |
{ struct socket *sock; |
6cb153cab [NET]: use fget_l... |
1568 |
int err, fput_needed; |
b8e1f9b5c [NET] sysctl: mak... |
1569 |
int somaxconn; |
89bddce58 [NET] socket: cod... |
1570 1571 1572 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock) { |
8efa6e93c [NETNS]: Introduc... |
1573 |
somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn; |
95c961747 net: cleanup unsi... |
1574 |
if ((unsigned int)backlog > somaxconn) |
b8e1f9b5c [NET] sysctl: mak... |
1575 |
backlog = somaxconn; |
1da177e4c Linux-2.6.12-rc2 |
1576 1577 |
err = security_socket_listen(sock, backlog); |
6cb153cab [NET]: use fget_l... |
1578 1579 |
if (!err) err = sock->ops->listen(sock, backlog); |
1da177e4c Linux-2.6.12-rc2 |
1580 |
|
6cb153cab [NET]: use fget_l... |
1581 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1582 1583 1584 |
} return err; } |
25e290eed net: socket: add ... |
1585 1586 1587 1588 |
SYSCALL_DEFINE2(listen, int, fd, int, backlog) { return __sys_listen(fd, backlog); } |
1da177e4c Linux-2.6.12-rc2 |
1589 1590 1591 1592 1593 1594 1595 1596 1597 |
/* * For accept, we attempt to create a new socket, set up the link * with the client, wake up the client, then return the new * connected fd. We collect the address of the connector in kernel * space and move it to user at the very end. This is unclean because * we open the socket then return an error. * * 1003.1g adds the ability to recvmsg() to query connection pending * status to recvmsg. We need to add that support in a way thats |
b903036aa net: Spelling s/s... |
1598 |
* clean when we restructure accept also. |
1da177e4c Linux-2.6.12-rc2 |
1599 |
*/ |
4541e8056 net: socket: add ... |
1600 1601 |
int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen, int flags) |
1da177e4c Linux-2.6.12-rc2 |
1602 1603 |
{ struct socket *sock, *newsock; |
39d8c1b6f [NET]: Do not los... |
1604 |
struct file *newfile; |
6cb153cab [NET]: use fget_l... |
1605 |
int err, len, newfd, fput_needed; |
230b18392 net: Use standard... |
1606 |
struct sockaddr_storage address; |
1da177e4c Linux-2.6.12-rc2 |
1607 |
|
77d272005 flag parameters: ... |
1608 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
aaca0bdca flag parameters: ... |
1609 1610 1611 1612 |
return -EINVAL; if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
6cb153cab [NET]: use fget_l... |
1613 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1614 1615 1616 1617 |
if (!sock) goto out; err = -ENFILE; |
c6d409cfd From abbffa2aa9bd... |
1618 1619 |
newsock = sock_alloc(); if (!newsock) |
1da177e4c Linux-2.6.12-rc2 |
1620 1621 1622 1623 |
goto out_put; newsock->type = sock->type; newsock->ops = sock->ops; |
1da177e4c Linux-2.6.12-rc2 |
1624 1625 1626 1627 1628 |
/* * We don't need try_module_get here, as the listening socket (sock) * has the protocol module (sock->ops->owner) held. */ __module_get(newsock->ops->owner); |
284076305 take descriptor h... |
1629 |
newfd = get_unused_fd_flags(flags); |
39d8c1b6f [NET]: Do not los... |
1630 1631 |
if (unlikely(newfd < 0)) { err = newfd; |
9a1875e60 [NET]: Fully fix ... |
1632 1633 |
sock_release(newsock); goto out_put; |
39d8c1b6f [NET]: Do not los... |
1634 |
} |
aab174f0d Merge branch 'for... |
1635 |
newfile = sock_alloc_file(newsock, flags, sock->sk->sk_prot_creator->name); |
b5ffe6344 net: Drop unlikel... |
1636 |
if (IS_ERR(newfile)) { |
284076305 take descriptor h... |
1637 1638 |
err = PTR_ERR(newfile); put_unused_fd(newfd); |
284076305 take descriptor h... |
1639 1640 |
goto out_put; } |
39d8c1b6f [NET]: Do not los... |
1641 |
|
a79af59ef [NET]: Fix module... |
1642 1643 |
err = security_socket_accept(sock, newsock); if (err) |
39d8c1b6f [NET]: Do not los... |
1644 |
goto out_fd; |
a79af59ef [NET]: Fix module... |
1645 |
|
cdfbabfb2 net: Work around ... |
1646 |
err = sock->ops->accept(sock, newsock, sock->file->f_flags, false); |
1da177e4c Linux-2.6.12-rc2 |
1647 |
if (err < 0) |
39d8c1b6f [NET]: Do not los... |
1648 |
goto out_fd; |
1da177e4c Linux-2.6.12-rc2 |
1649 1650 |
if (upeer_sockaddr) { |
9b2c45d47 net: make getname... |
1651 1652 1653 |
len = newsock->ops->getname(newsock, (struct sockaddr *)&address, 2); if (len < 0) { |
1da177e4c Linux-2.6.12-rc2 |
1654 |
err = -ECONNABORTED; |
39d8c1b6f [NET]: Do not los... |
1655 |
goto out_fd; |
1da177e4c Linux-2.6.12-rc2 |
1656 |
} |
43db362d3 net: get rid of s... |
1657 |
err = move_addr_to_user(&address, |
230b18392 net: Use standard... |
1658 |
len, upeer_sockaddr, upeer_addrlen); |
1da177e4c Linux-2.6.12-rc2 |
1659 |
if (err < 0) |
39d8c1b6f [NET]: Do not los... |
1660 |
goto out_fd; |
1da177e4c Linux-2.6.12-rc2 |
1661 1662 1663 |
} /* File flags are not inherited via accept() unlike another OSes. */ |
39d8c1b6f [NET]: Do not los... |
1664 1665 |
fd_install(newfd, newfile); err = newfd; |
1da177e4c Linux-2.6.12-rc2 |
1666 |
|
1da177e4c Linux-2.6.12-rc2 |
1667 |
out_put: |
6cb153cab [NET]: use fget_l... |
1668 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1669 1670 |
out: return err; |
39d8c1b6f [NET]: Do not los... |
1671 |
out_fd: |
9606a2163 [NET]: Fix dentry... |
1672 |
fput(newfile); |
39d8c1b6f [NET]: Do not los... |
1673 |
put_unused_fd(newfd); |
1da177e4c Linux-2.6.12-rc2 |
1674 1675 |
goto out_put; } |
4541e8056 net: socket: add ... |
1676 1677 1678 1679 1680 |
SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen, int, flags) { return __sys_accept4(fd, upeer_sockaddr, upeer_addrlen, flags); } |
20f37034f [CVE-2009-0029] S... |
1681 1682 |
SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen) |
aaca0bdca flag parameters: ... |
1683 |
{ |
4541e8056 net: socket: add ... |
1684 |
return __sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0); |
aaca0bdca flag parameters: ... |
1685 |
} |
1da177e4c Linux-2.6.12-rc2 |
1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 |
/* * Attempt to connect to a socket with the server address. The address * is in user space so we verify it is OK and move it to kernel space. * * For 1003.1g we need to add clean support for a bind to AF_UNSPEC to * break bindings * * NOTE: 1003.1g draft 6.3 is broken with respect to AX.25/NetROM and * other SEQPACKET protocols that take time to connect() as it doesn't * include the -EINPROGRESS status for such sockets. */ |
1387c2c2f net: socket: add ... |
1697 |
int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen) |
1da177e4c Linux-2.6.12-rc2 |
1698 1699 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1700 |
struct sockaddr_storage address; |
6cb153cab [NET]: use fget_l... |
1701 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1702 |
|
6cb153cab [NET]: use fget_l... |
1703 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1704 1705 |
if (!sock) goto out; |
43db362d3 net: get rid of s... |
1706 |
err = move_addr_to_kernel(uservaddr, addrlen, &address); |
1da177e4c Linux-2.6.12-rc2 |
1707 1708 |
if (err < 0) goto out_put; |
89bddce58 [NET] socket: cod... |
1709 |
err = |
230b18392 net: Use standard... |
1710 |
security_socket_connect(sock, (struct sockaddr *)&address, addrlen); |
1da177e4c Linux-2.6.12-rc2 |
1711 1712 |
if (err) goto out_put; |
230b18392 net: Use standard... |
1713 |
err = sock->ops->connect(sock, (struct sockaddr *)&address, addrlen, |
1da177e4c Linux-2.6.12-rc2 |
1714 1715 |
sock->file->f_flags); out_put: |
6cb153cab [NET]: use fget_l... |
1716 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1717 1718 1719 |
out: return err; } |
1387c2c2f net: socket: add ... |
1720 1721 1722 1723 1724 |
SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen) { return __sys_connect(fd, uservaddr, addrlen); } |
1da177e4c Linux-2.6.12-rc2 |
1725 1726 1727 1728 |
/* * Get the local address ('name') of a socket object. Move the obtained * name to user space. */ |
8882a107b net: socket: add ... |
1729 1730 |
int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len) |
1da177e4c Linux-2.6.12-rc2 |
1731 1732 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1733 |
struct sockaddr_storage address; |
9b2c45d47 net: make getname... |
1734 |
int err, fput_needed; |
89bddce58 [NET] socket: cod... |
1735 |
|
6cb153cab [NET]: use fget_l... |
1736 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1737 1738 1739 1740 1741 1742 |
if (!sock) goto out; err = security_socket_getsockname(sock); if (err) goto out_put; |
9b2c45d47 net: make getname... |
1743 1744 |
err = sock->ops->getname(sock, (struct sockaddr *)&address, 0); if (err < 0) |
1da177e4c Linux-2.6.12-rc2 |
1745 |
goto out_put; |
9b2c45d47 net: make getname... |
1746 1747 |
/* "err" is actually length in this case */ err = move_addr_to_user(&address, err, usockaddr, usockaddr_len); |
1da177e4c Linux-2.6.12-rc2 |
1748 1749 |
out_put: |
6cb153cab [NET]: use fget_l... |
1750 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1751 1752 1753 |
out: return err; } |
8882a107b net: socket: add ... |
1754 1755 1756 1757 1758 |
SYSCALL_DEFINE3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len) { return __sys_getsockname(fd, usockaddr, usockaddr_len); } |
1da177e4c Linux-2.6.12-rc2 |
1759 1760 1761 1762 |
/* * Get the remote address ('name') of a socket object. Move the obtained * name to user space. */ |
b21c8f838 net: socket: add ... |
1763 1764 |
int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len) |
1da177e4c Linux-2.6.12-rc2 |
1765 1766 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1767 |
struct sockaddr_storage address; |
9b2c45d47 net: make getname... |
1768 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1769 |
|
89bddce58 [NET] socket: cod... |
1770 1771 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
1da177e4c Linux-2.6.12-rc2 |
1772 1773 |
err = security_socket_getpeername(sock); if (err) { |
6cb153cab [NET]: use fget_l... |
1774 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1775 1776 |
return err; } |
9b2c45d47 net: make getname... |
1777 1778 1779 1780 |
err = sock->ops->getname(sock, (struct sockaddr *)&address, 1); if (err >= 0) /* "err" is actually length in this case */ err = move_addr_to_user(&address, err, usockaddr, |
89bddce58 [NET] socket: cod... |
1781 |
usockaddr_len); |
6cb153cab [NET]: use fget_l... |
1782 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1783 1784 1785 |
} return err; } |
b21c8f838 net: socket: add ... |
1786 1787 1788 1789 1790 |
SYSCALL_DEFINE3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len) { return __sys_getpeername(fd, usockaddr, usockaddr_len); } |
1da177e4c Linux-2.6.12-rc2 |
1791 1792 1793 1794 1795 |
/* * Send a datagram to a given address. We move the address into kernel * space and check the user space data area is readable before invoking * the protocol. */ |
211b634b7 net: socket: add ... |
1796 1797 |
int __sys_sendto(int fd, void __user *buff, size_t len, unsigned int flags, struct sockaddr __user *addr, int addr_len) |
1da177e4c Linux-2.6.12-rc2 |
1798 1799 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1800 |
struct sockaddr_storage address; |
1da177e4c Linux-2.6.12-rc2 |
1801 1802 1803 |
int err; struct msghdr msg; struct iovec iov; |
6cb153cab [NET]: use fget_l... |
1804 |
int fput_needed; |
6cb153cab [NET]: use fget_l... |
1805 |
|
602bd0e90 net: switch sendt... |
1806 1807 1808 |
err = import_single_range(WRITE, buff, len, &iov, &msg.msg_iter); if (unlikely(err)) return err; |
de0fa95c1 [NET]: Use sockfd... |
1809 1810 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) |
4387ff75f [NET]: Fix net/so... |
1811 |
goto out; |
6cb153cab [NET]: use fget_l... |
1812 |
|
89bddce58 [NET] socket: cod... |
1813 |
msg.msg_name = NULL; |
89bddce58 [NET] socket: cod... |
1814 1815 1816 |
msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_namelen = 0; |
6cb153cab [NET]: use fget_l... |
1817 |
if (addr) { |
43db362d3 net: get rid of s... |
1818 |
err = move_addr_to_kernel(addr, addr_len, &address); |
1da177e4c Linux-2.6.12-rc2 |
1819 1820 |
if (err < 0) goto out_put; |
230b18392 net: Use standard... |
1821 |
msg.msg_name = (struct sockaddr *)&address; |
89bddce58 [NET] socket: cod... |
1822 |
msg.msg_namelen = addr_len; |
1da177e4c Linux-2.6.12-rc2 |
1823 1824 1825 1826 |
} if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; msg.msg_flags = flags; |
d8725c86a get rid of the si... |
1827 |
err = sock_sendmsg(sock, &msg); |
1da177e4c Linux-2.6.12-rc2 |
1828 |
|
89bddce58 [NET] socket: cod... |
1829 |
out_put: |
de0fa95c1 [NET]: Use sockfd... |
1830 |
fput_light(sock->file, fput_needed); |
4387ff75f [NET]: Fix net/so... |
1831 |
out: |
1da177e4c Linux-2.6.12-rc2 |
1832 1833 |
return err; } |
211b634b7 net: socket: add ... |
1834 1835 1836 1837 1838 1839 |
SYSCALL_DEFINE6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len) { return __sys_sendto(fd, buff, len, flags, addr, addr_len); } |
1da177e4c Linux-2.6.12-rc2 |
1840 |
/* |
89bddce58 [NET] socket: cod... |
1841 |
* Send a datagram down a socket. |
1da177e4c Linux-2.6.12-rc2 |
1842 |
*/ |
3e0fa65f8 [CVE-2009-0029] S... |
1843 |
SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, |
95c961747 net: cleanup unsi... |
1844 |
unsigned int, flags) |
1da177e4c Linux-2.6.12-rc2 |
1845 |
{ |
211b634b7 net: socket: add ... |
1846 |
return __sys_sendto(fd, buff, len, flags, NULL, 0); |
1da177e4c Linux-2.6.12-rc2 |
1847 1848 1849 |
} /* |
89bddce58 [NET] socket: cod... |
1850 |
* Receive a frame from the socket and optionally record the address of the |
1da177e4c Linux-2.6.12-rc2 |
1851 1852 1853 |
* sender. We verify the buffers are writable and if needed move the * sender address from kernel to user space. */ |
7a09e1eb9 net: socket: add ... |
1854 1855 |
int __sys_recvfrom(int fd, void __user *ubuf, size_t size, unsigned int flags, struct sockaddr __user *addr, int __user *addr_len) |
1da177e4c Linux-2.6.12-rc2 |
1856 1857 1858 1859 |
{ struct socket *sock; struct iovec iov; struct msghdr msg; |
230b18392 net: Use standard... |
1860 |
struct sockaddr_storage address; |
89bddce58 [NET] socket: cod... |
1861 |
int err, err2; |
6cb153cab [NET]: use fget_l... |
1862 |
int fput_needed; |
602bd0e90 net: switch sendt... |
1863 1864 1865 |
err = import_single_range(READ, ubuf, size, &iov, &msg.msg_iter); if (unlikely(err)) return err; |
de0fa95c1 [NET]: Use sockfd... |
1866 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1867 |
if (!sock) |
de0fa95c1 [NET]: Use sockfd... |
1868 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1869 |
|
89bddce58 [NET] socket: cod... |
1870 1871 |
msg.msg_control = NULL; msg.msg_controllen = 0; |
f3d334260 net: rework recvm... |
1872 1873 1874 1875 |
/* Save some cycles and don't copy the address if not needed */ msg.msg_name = addr ? (struct sockaddr *)&address : NULL; /* We assume all kernel code knows the size of sockaddr_storage */ msg.msg_namelen = 0; |
130ed5d10 net: fix uninitia... |
1876 |
msg.msg_iocb = NULL; |
9f138fa60 net: initialize m... |
1877 |
msg.msg_flags = 0; |
1da177e4c Linux-2.6.12-rc2 |
1878 1879 |
if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |
2da62906b [net] drop 'size'... |
1880 |
err = sock_recvmsg(sock, &msg, flags); |
1da177e4c Linux-2.6.12-rc2 |
1881 |
|
89bddce58 [NET] socket: cod... |
1882 |
if (err >= 0 && addr != NULL) { |
43db362d3 net: get rid of s... |
1883 |
err2 = move_addr_to_user(&address, |
230b18392 net: Use standard... |
1884 |
msg.msg_namelen, addr, addr_len); |
89bddce58 [NET] socket: cod... |
1885 1886 |
if (err2 < 0) err = err2; |
1da177e4c Linux-2.6.12-rc2 |
1887 |
} |
de0fa95c1 [NET]: Use sockfd... |
1888 1889 |
fput_light(sock->file, fput_needed); |
4387ff75f [NET]: Fix net/so... |
1890 |
out: |
1da177e4c Linux-2.6.12-rc2 |
1891 1892 |
return err; } |
7a09e1eb9 net: socket: add ... |
1893 1894 1895 1896 1897 1898 |
SYSCALL_DEFINE6(recvfrom, int, fd, void __user *, ubuf, size_t, size, unsigned int, flags, struct sockaddr __user *, addr, int __user *, addr_len) { return __sys_recvfrom(fd, ubuf, size, flags, addr, addr_len); } |
1da177e4c Linux-2.6.12-rc2 |
1899 |
/* |
89bddce58 [NET] socket: cod... |
1900 |
* Receive a datagram from a socket. |
1da177e4c Linux-2.6.12-rc2 |
1901 |
*/ |
b7c0ddf5f net: use SYSCALL_... |
1902 1903 |
SYSCALL_DEFINE4(recv, int, fd, void __user *, ubuf, size_t, size, unsigned int, flags) |
1da177e4c Linux-2.6.12-rc2 |
1904 |
{ |
7a09e1eb9 net: socket: add ... |
1905 |
return __sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1906 1907 1908 1909 1910 1911 |
} /* * Set a socket option. Because we don't know the option lengths we have * to pass the user mode parameter for the protocols to sort out. */ |
cc36dca0d net: socket: add ... |
1912 1913 |
static int __sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen) |
1da177e4c Linux-2.6.12-rc2 |
1914 |
{ |
0d01da6af bpf: implement ge... |
1915 1916 |
mm_segment_t oldfs = get_fs(); char *kernel_optval = NULL; |
6cb153cab [NET]: use fget_l... |
1917 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1918 1919 1920 1921 |
struct socket *sock; if (optlen < 0) return -EINVAL; |
89bddce58 [NET] socket: cod... |
1922 1923 1924 1925 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { err = security_socket_setsockopt(sock, level, optname); |
6cb153cab [NET]: use fget_l... |
1926 1927 |
if (err) goto out_put; |
1da177e4c Linux-2.6.12-rc2 |
1928 |
|
0d01da6af bpf: implement ge... |
1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 |
err = BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock->sk, &level, &optname, optval, &optlen, &kernel_optval); if (err < 0) { goto out_put; } else if (err > 0) { err = 0; goto out_put; } if (kernel_optval) { set_fs(KERNEL_DS); optval = (char __user __force *)kernel_optval; } |
1da177e4c Linux-2.6.12-rc2 |
1944 |
if (level == SOL_SOCKET) |
89bddce58 [NET] socket: cod... |
1945 1946 1947 |
err = sock_setsockopt(sock, level, optname, optval, optlen); |
1da177e4c Linux-2.6.12-rc2 |
1948 |
else |
89bddce58 [NET] socket: cod... |
1949 1950 1951 |
err = sock->ops->setsockopt(sock, level, optname, optval, optlen); |
0d01da6af bpf: implement ge... |
1952 1953 1954 1955 1956 |
if (kernel_optval) { set_fs(oldfs); kfree(kernel_optval); } |
6cb153cab [NET]: use fget_l... |
1957 1958 |
out_put: fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1959 1960 1961 |
} return err; } |
cc36dca0d net: socket: add ... |
1962 1963 1964 1965 1966 |
SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, char __user *, optval, int, optlen) { return __sys_setsockopt(fd, level, optname, optval, optlen); } |
1da177e4c Linux-2.6.12-rc2 |
1967 1968 1969 1970 |
/* * Get a socket option. Because we don't know the option lengths we have * to pass a user mode parameter for the protocols to sort out. */ |
13a2d70e2 net: socket: add ... |
1971 1972 |
static int __sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen) |
1da177e4c Linux-2.6.12-rc2 |
1973 |
{ |
6cb153cab [NET]: use fget_l... |
1974 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1975 |
struct socket *sock; |
0d01da6af bpf: implement ge... |
1976 |
int max_optlen; |
1da177e4c Linux-2.6.12-rc2 |
1977 |
|
89bddce58 [NET] socket: cod... |
1978 1979 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
6cb153cab [NET]: use fget_l... |
1980 1981 1982 |
err = security_socket_getsockopt(sock, level, optname); if (err) goto out_put; |
1da177e4c Linux-2.6.12-rc2 |
1983 |
|
0d01da6af bpf: implement ge... |
1984 |
max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen); |
1da177e4c Linux-2.6.12-rc2 |
1985 |
if (level == SOL_SOCKET) |
89bddce58 [NET] socket: cod... |
1986 1987 1988 |
err = sock_getsockopt(sock, level, optname, optval, optlen); |
1da177e4c Linux-2.6.12-rc2 |
1989 |
else |
89bddce58 [NET] socket: cod... |
1990 1991 1992 |
err = sock->ops->getsockopt(sock, level, optname, optval, optlen); |
0d01da6af bpf: implement ge... |
1993 1994 1995 1996 |
err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname, optval, optlen, max_optlen, err); |
6cb153cab [NET]: use fget_l... |
1997 1998 |
out_put: fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1999 2000 2001 |
} return err; } |
13a2d70e2 net: socket: add ... |
2002 2003 2004 2005 2006 |
SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, char __user *, optval, int __user *, optlen) { return __sys_getsockopt(fd, level, optname, optval, optlen); } |
1da177e4c Linux-2.6.12-rc2 |
2007 2008 2009 |
/* * Shutdown a socket. */ |
005a1aeac net: socket: add ... |
2010 |
int __sys_shutdown(int fd, int how) |
1da177e4c Linux-2.6.12-rc2 |
2011 |
{ |
6cb153cab [NET]: use fget_l... |
2012 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
2013 |
struct socket *sock; |
89bddce58 [NET] socket: cod... |
2014 2015 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
1da177e4c Linux-2.6.12-rc2 |
2016 |
err = security_socket_shutdown(sock, how); |
6cb153cab [NET]: use fget_l... |
2017 2018 2019 |
if (!err) err = sock->ops->shutdown(sock, how); fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
2020 2021 2022 |
} return err; } |
005a1aeac net: socket: add ... |
2023 2024 2025 2026 |
SYSCALL_DEFINE2(shutdown, int, fd, int, how) { return __sys_shutdown(fd, how); } |
89bddce58 [NET] socket: cod... |
2027 |
/* A couple of helpful macros for getting the address of the 32/64 bit |
1da177e4c Linux-2.6.12-rc2 |
2028 2029 2030 2031 2032 |
* fields which are the same type (int / unsigned) on our platforms. */ #define COMPAT_MSG(msg, member) ((MSG_CMSG_COMPAT & flags) ? &msg##_compat->member : &msg->member) #define COMPAT_NAMELEN(msg) COMPAT_MSG(msg, msg_namelen) #define COMPAT_FLAGS(msg) COMPAT_MSG(msg, msg_flags) |
c71d8ebe7 net: Fix security... |
2033 2034 2035 2036 |
struct used_address { struct sockaddr_storage name; unsigned int name_len; }; |
da1842849 net: switch impor... |
2037 2038 2039 2040 |
static int copy_msghdr_from_user(struct msghdr *kmsg, struct user_msghdr __user *umsg, struct sockaddr __user **save_addr, struct iovec **iov) |
1661bf364 net: heap overflo... |
2041 |
{ |
ffb07550c copy_msghdr_from_... |
2042 |
struct user_msghdr msg; |
08adb7dab fold verify_iovec... |
2043 |
ssize_t err; |
ffb07550c copy_msghdr_from_... |
2044 |
if (copy_from_user(&msg, umsg, sizeof(*umsg))) |
1661bf364 net: heap overflo... |
2045 |
return -EFAULT; |
dbb490b96 net: socket: erro... |
2046 |
|
864d96642 net/socket: fix t... |
2047 |
kmsg->msg_control = (void __force *)msg.msg_control; |
ffb07550c copy_msghdr_from_... |
2048 2049 2050 2051 2052 |
kmsg->msg_controllen = msg.msg_controllen; kmsg->msg_flags = msg.msg_flags; kmsg->msg_namelen = msg.msg_namelen; if (!msg.msg_name) |
6a2a2b3ae net:socket: set m... |
2053 |
kmsg->msg_namelen = 0; |
dbb490b96 net: socket: erro... |
2054 2055 |
if (kmsg->msg_namelen < 0) return -EINVAL; |
1661bf364 net: heap overflo... |
2056 |
if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) |
db31c55a6 net: clamp ->msg_... |
2057 |
kmsg->msg_namelen = sizeof(struct sockaddr_storage); |
08adb7dab fold verify_iovec... |
2058 2059 |
if (save_addr) |
ffb07550c copy_msghdr_from_... |
2060 |
*save_addr = msg.msg_name; |
08adb7dab fold verify_iovec... |
2061 |
|
ffb07550c copy_msghdr_from_... |
2062 |
if (msg.msg_name && kmsg->msg_namelen) { |
08adb7dab fold verify_iovec... |
2063 |
if (!save_addr) { |
864d96642 net/socket: fix t... |
2064 2065 |
err = move_addr_to_kernel(msg.msg_name, kmsg->msg_namelen, |
08adb7dab fold verify_iovec... |
2066 2067 2068 2069 2070 2071 2072 2073 |
kmsg->msg_name); if (err < 0) return err; } } else { kmsg->msg_name = NULL; kmsg->msg_namelen = 0; } |
ffb07550c copy_msghdr_from_... |
2074 |
if (msg.msg_iovlen > UIO_MAXIOV) |
08adb7dab fold verify_iovec... |
2075 |
return -EMSGSIZE; |
0345f9313 net: socket: add ... |
2076 |
kmsg->msg_iocb = NULL; |
87e5e6dab uio: make import_... |
2077 |
err = import_iovec(save_addr ? READ : WRITE, |
ffb07550c copy_msghdr_from_... |
2078 |
msg.msg_iov, msg.msg_iovlen, |
da1842849 net: switch impor... |
2079 |
UIO_FASTIOV, iov, &kmsg->msg_iter); |
87e5e6dab uio: make import_... |
2080 |
return err < 0 ? err : 0; |
1661bf364 net: heap overflo... |
2081 |
} |
78df03e4c net: separate out... |
2082 2083 2084 |
static int ____sys_sendmsg(struct socket *sock, struct msghdr *msg_sys, unsigned int flags, struct used_address *used_address, unsigned int allowed_msghdr_flags) |
1da177e4c Linux-2.6.12-rc2 |
2085 |
{ |
b9d717a7b [NET]: Make sure ... |
2086 |
unsigned char ctl[sizeof(struct cmsghdr) + 20] |
846cc1231 net: socket: pref... |
2087 |
__aligned(sizeof(__kernel_size_t)); |
89bddce58 [NET] socket: cod... |
2088 |
/* 20 is size of ipv6_pktinfo */ |
1da177e4c Linux-2.6.12-rc2 |
2089 |
unsigned char *ctl_buf = ctl; |
d8725c86a get rid of the si... |
2090 |
int ctl_len; |
08adb7dab fold verify_iovec... |
2091 |
ssize_t err; |
89bddce58 [NET] socket: cod... |
2092 |
|
1da177e4c Linux-2.6.12-rc2 |
2093 |
err = -ENOBUFS; |
228e548e6 net: Add sendmmsg... |
2094 |
if (msg_sys->msg_controllen > INT_MAX) |
78df03e4c net: separate out... |
2095 |
goto out; |
28a94d8fb net: Allow MSG_EO... |
2096 |
flags |= (msg_sys->msg_flags & allowed_msghdr_flags); |
228e548e6 net: Add sendmmsg... |
2097 |
ctl_len = msg_sys->msg_controllen; |
1da177e4c Linux-2.6.12-rc2 |
2098 |
if ((MSG_CMSG_COMPAT & flags) && ctl_len) { |
89bddce58 [NET] socket: cod... |
2099 |
err = |
228e548e6 net: Add sendmmsg... |
2100 |
cmsghdr_from_user_compat_to_kern(msg_sys, sock->sk, ctl, |
89bddce58 [NET] socket: cod... |
2101 |
sizeof(ctl)); |
1da177e4c Linux-2.6.12-rc2 |
2102 |
if (err) |
78df03e4c net: separate out... |
2103 |
goto out; |
228e548e6 net: Add sendmmsg... |
2104 2105 |
ctl_buf = msg_sys->msg_control; ctl_len = msg_sys->msg_controllen; |
1da177e4c Linux-2.6.12-rc2 |
2106 |
} else if (ctl_len) { |
ac4340fc3 net: Assert at bu... |
2107 2108 |
BUILD_BUG_ON(sizeof(struct cmsghdr) != CMSG_ALIGN(sizeof(struct cmsghdr))); |
89bddce58 [NET] socket: cod... |
2109 |
if (ctl_len > sizeof(ctl)) { |
1da177e4c Linux-2.6.12-rc2 |
2110 |
ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL); |
89bddce58 [NET] socket: cod... |
2111 |
if (ctl_buf == NULL) |
78df03e4c net: separate out... |
2112 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2113 2114 2115 |
} err = -EFAULT; /* |
228e548e6 net: Add sendmmsg... |
2116 |
* Careful! Before this, msg_sys->msg_control contains a user pointer. |
1da177e4c Linux-2.6.12-rc2 |
2117 2118 2119 |
* Afterwards, it will be a kernel pointer. Thus the compiler-assisted * checking falls down on this. */ |
fb8621bb6 net: remove addre... |
2120 |
if (copy_from_user(ctl_buf, |
228e548e6 net: Add sendmmsg... |
2121 |
(void __user __force *)msg_sys->msg_control, |
89bddce58 [NET] socket: cod... |
2122 |
ctl_len)) |
1da177e4c Linux-2.6.12-rc2 |
2123 |
goto out_freectl; |
228e548e6 net: Add sendmmsg... |
2124 |
msg_sys->msg_control = ctl_buf; |
1da177e4c Linux-2.6.12-rc2 |
2125 |
} |
228e548e6 net: Add sendmmsg... |
2126 |
msg_sys->msg_flags = flags; |
1da177e4c Linux-2.6.12-rc2 |
2127 2128 |
if (sock->file->f_flags & O_NONBLOCK) |
228e548e6 net: Add sendmmsg... |
2129 |
msg_sys->msg_flags |= MSG_DONTWAIT; |
c71d8ebe7 net: Fix security... |
2130 2131 2132 2133 2134 2135 |
/* * If this is sendmmsg() and current destination address is same as * previously succeeded address, omit asking LSM's decision. * used_address->name_len is initialized to UINT_MAX so that the first * destination address never matches. */ |
bc909d9dd sendmmsg/sendmsg:... |
2136 2137 2138 |
if (used_address && msg_sys->msg_name && used_address->name_len == msg_sys->msg_namelen && !memcmp(&used_address->name, msg_sys->msg_name, |
c71d8ebe7 net: Fix security... |
2139 |
used_address->name_len)) { |
d8725c86a get rid of the si... |
2140 |
err = sock_sendmsg_nosec(sock, msg_sys); |
c71d8ebe7 net: Fix security... |
2141 2142 |
goto out_freectl; } |
d8725c86a get rid of the si... |
2143 |
err = sock_sendmsg(sock, msg_sys); |
c71d8ebe7 net: Fix security... |
2144 2145 2146 2147 2148 2149 |
/* * If this is sendmmsg() and sending to current destination address was * successful, remember it. */ if (used_address && err >= 0) { used_address->name_len = msg_sys->msg_namelen; |
bc909d9dd sendmmsg/sendmsg:... |
2150 2151 2152 |
if (msg_sys->msg_name) memcpy(&used_address->name, msg_sys->msg_name, used_address->name_len); |
c71d8ebe7 net: Fix security... |
2153 |
} |
1da177e4c Linux-2.6.12-rc2 |
2154 2155 |
out_freectl: |
89bddce58 [NET] socket: cod... |
2156 |
if (ctl_buf != ctl) |
1da177e4c Linux-2.6.12-rc2 |
2157 |
sock_kfree_s(sock->sk, ctl_buf, ctl_len); |
78df03e4c net: separate out... |
2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 |
out: return err; } static int sendmsg_copy_msghdr(struct msghdr *msg, struct user_msghdr __user *umsg, unsigned flags, struct iovec **iov) { int err; if (flags & MSG_CMSG_COMPAT) { struct compat_msghdr __user *msg_compat; msg_compat = (struct compat_msghdr __user *) umsg; err = get_compat_msghdr(msg, msg_compat, NULL, iov); } else { err = copy_msghdr_from_user(msg, umsg, NULL, iov); } if (err < 0) return err; return 0; } static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg, struct msghdr *msg_sys, unsigned int flags, struct used_address *used_address, unsigned int allowed_msghdr_flags) { struct sockaddr_storage address; struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; ssize_t err; msg_sys->msg_name = &address; err = sendmsg_copy_msghdr(msg_sys, msg, flags, &iov); if (err < 0) return err; err = ____sys_sendmsg(sock, msg_sys, flags, used_address, allowed_msghdr_flags); |
da1842849 net: switch impor... |
2199 |
kfree(iov); |
228e548e6 net: Add sendmmsg... |
2200 2201 2202 2203 2204 2205 |
return err; } /* * BSD sendmsg interface */ |
d62459444 net: disallow anc... |
2206 |
long __sys_sendmsg_sock(struct socket *sock, struct user_msghdr __user *umsg, |
0fa03c624 io_uring: add sup... |
2207 2208 |
unsigned int flags) { |
d62459444 net: disallow anc... |
2209 2210 2211 2212 |
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; struct sockaddr_storage address; struct msghdr msg = { .msg_name = &address }; ssize_t err; |
0fa03c624 io_uring: add sup... |
2213 |
|
d62459444 net: disallow anc... |
2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 |
err = sendmsg_copy_msghdr(&msg, umsg, flags, &iov); if (err) return err; /* disallow ancillary data requests from this path */ if (msg.msg_control || msg.msg_controllen) { err = -EINVAL; goto out; } err = ____sys_sendmsg(sock, &msg, flags, NULL, 0); out: kfree(iov); return err; |
0fa03c624 io_uring: add sup... |
2227 |
} |
228e548e6 net: Add sendmmsg... |
2228 |
|
e1834a329 net: socket: move... |
2229 2230 |
long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat) |
228e548e6 net: Add sendmmsg... |
2231 2232 2233 |
{ int fput_needed, err; struct msghdr msg_sys; |
1be374a05 net: Block MSG_CM... |
2234 |
struct socket *sock; |
e1834a329 net: socket: move... |
2235 2236 |
if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) return -EINVAL; |
1be374a05 net: Block MSG_CM... |
2237 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
228e548e6 net: Add sendmmsg... |
2238 2239 |
if (!sock) goto out; |
28a94d8fb net: Allow MSG_EO... |
2240 |
err = ___sys_sendmsg(sock, msg, &msg_sys, flags, NULL, 0); |
228e548e6 net: Add sendmmsg... |
2241 |
|
6cb153cab [NET]: use fget_l... |
2242 |
fput_light(sock->file, fput_needed); |
89bddce58 [NET] socket: cod... |
2243 |
out: |
1da177e4c Linux-2.6.12-rc2 |
2244 2245 |
return err; } |
666547ff5 separate kernel- ... |
2246 |
SYSCALL_DEFINE3(sendmsg, int, fd, struct user_msghdr __user *, msg, unsigned int, flags) |
a7526eb5d net: Unbreak comp... |
2247 |
{ |
e1834a329 net: socket: move... |
2248 |
return __sys_sendmsg(fd, msg, flags, true); |
a7526eb5d net: Unbreak comp... |
2249 |
} |
228e548e6 net: Add sendmmsg... |
2250 2251 2252 2253 2254 |
/* * Linux sendmmsg interface */ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, |
e1834a329 net: socket: move... |
2255 |
unsigned int flags, bool forbid_cmsg_compat) |
228e548e6 net: Add sendmmsg... |
2256 2257 2258 2259 2260 2261 |
{ int fput_needed, err, datagrams; struct socket *sock; struct mmsghdr __user *entry; struct compat_mmsghdr __user *compat_entry; struct msghdr msg_sys; |
c71d8ebe7 net: Fix security... |
2262 |
struct used_address used_address; |
f092276d8 net: Add MSG_BATC... |
2263 |
unsigned int oflags = flags; |
228e548e6 net: Add sendmmsg... |
2264 |
|
e1834a329 net: socket: move... |
2265 2266 |
if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) return -EINVAL; |
98382f419 net: Cap number o... |
2267 2268 |
if (vlen > UIO_MAXIOV) vlen = UIO_MAXIOV; |
228e548e6 net: Add sendmmsg... |
2269 2270 2271 2272 2273 2274 |
datagrams = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) return err; |
c71d8ebe7 net: Fix security... |
2275 |
used_address.name_len = UINT_MAX; |
228e548e6 net: Add sendmmsg... |
2276 2277 |
entry = mmsg; compat_entry = (struct compat_mmsghdr __user *)mmsg; |
728ffb86f net: sendmmsg sho... |
2278 |
err = 0; |
f092276d8 net: Add MSG_BATC... |
2279 |
flags |= MSG_BATCH; |
228e548e6 net: Add sendmmsg... |
2280 2281 |
while (datagrams < vlen) { |
f092276d8 net: Add MSG_BATC... |
2282 2283 |
if (datagrams == vlen - 1) flags = oflags; |
228e548e6 net: Add sendmmsg... |
2284 |
if (MSG_CMSG_COMPAT & flags) { |
666547ff5 separate kernel- ... |
2285 |
err = ___sys_sendmsg(sock, (struct user_msghdr __user *)compat_entry, |
28a94d8fb net: Allow MSG_EO... |
2286 |
&msg_sys, flags, &used_address, MSG_EOR); |
228e548e6 net: Add sendmmsg... |
2287 2288 2289 2290 2291 |
if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { |
a7526eb5d net: Unbreak comp... |
2292 |
err = ___sys_sendmsg(sock, |
666547ff5 separate kernel- ... |
2293 |
(struct user_msghdr __user *)entry, |
28a94d8fb net: Allow MSG_EO... |
2294 |
&msg_sys, flags, &used_address, MSG_EOR); |
228e548e6 net: Add sendmmsg... |
2295 2296 2297 2298 2299 2300 2301 2302 2303 |
if (err < 0) break; err = put_user(err, &entry->msg_len); ++entry; } if (err) break; ++datagrams; |
3023898b7 sock: fix sendmms... |
2304 2305 |
if (msg_data_left(&msg_sys)) break; |
a78cb84c6 net: add scheduli... |
2306 |
cond_resched(); |
228e548e6 net: Add sendmmsg... |
2307 |
} |
228e548e6 net: Add sendmmsg... |
2308 |
fput_light(sock->file, fput_needed); |
728ffb86f net: sendmmsg sho... |
2309 2310 |
/* We only return an error if no datagrams were able to be sent */ if (datagrams != 0) |
228e548e6 net: Add sendmmsg... |
2311 |
return datagrams; |
228e548e6 net: Add sendmmsg... |
2312 2313 2314 2315 2316 2317 |
return err; } SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags) { |
e1834a329 net: socket: move... |
2318 |
return __sys_sendmmsg(fd, mmsg, vlen, flags, true); |
228e548e6 net: Add sendmmsg... |
2319 |
} |
78df03e4c net: separate out... |
2320 2321 2322 2323 |
static int recvmsg_copy_msghdr(struct msghdr *msg, struct user_msghdr __user *umsg, unsigned flags, struct sockaddr __user **uaddr, struct iovec **iov) |
1da177e4c Linux-2.6.12-rc2 |
2324 |
{ |
08adb7dab fold verify_iovec... |
2325 |
ssize_t err; |
1da177e4c Linux-2.6.12-rc2 |
2326 |
|
78df03e4c net: separate out... |
2327 2328 |
if (MSG_CMSG_COMPAT & flags) { struct compat_msghdr __user *msg_compat; |
1da177e4c Linux-2.6.12-rc2 |
2329 |
|
78df03e4c net: separate out... |
2330 2331 2332 2333 2334 |
msg_compat = (struct compat_msghdr __user *) umsg; err = get_compat_msghdr(msg, msg_compat, uaddr, iov); } else { err = copy_msghdr_from_user(msg, umsg, uaddr, iov); } |
1da177e4c Linux-2.6.12-rc2 |
2335 |
if (err < 0) |
da1842849 net: switch impor... |
2336 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
2337 |
|
78df03e4c net: separate out... |
2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 |
return 0; } static int ____sys_recvmsg(struct socket *sock, struct msghdr *msg_sys, struct user_msghdr __user *msg, struct sockaddr __user *uaddr, unsigned int flags, int nosec) { struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *) msg; int __user *uaddr_len = COMPAT_NAMELEN(msg); struct sockaddr_storage addr; unsigned long cmsg_ptr; int len; ssize_t err; msg_sys->msg_name = &addr; |
a2e272554 net: Introduce re... |
2355 2356 |
cmsg_ptr = (unsigned long)msg_sys->msg_control; msg_sys->msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); |
89bddce58 [NET] socket: cod... |
2357 |
|
f3d334260 net: rework recvm... |
2358 2359 |
/* We assume all kernel code knows the size of sockaddr_storage */ msg_sys->msg_namelen = 0; |
1da177e4c Linux-2.6.12-rc2 |
2360 2361 |
if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |
2da62906b [net] drop 'size'... |
2362 |
err = (nosec ? sock_recvmsg_nosec : sock_recvmsg)(sock, msg_sys, flags); |
1da177e4c Linux-2.6.12-rc2 |
2363 |
if (err < 0) |
78df03e4c net: separate out... |
2364 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2365 2366 2367 |
len = err; if (uaddr != NULL) { |
43db362d3 net: get rid of s... |
2368 |
err = move_addr_to_user(&addr, |
a2e272554 net: Introduce re... |
2369 |
msg_sys->msg_namelen, uaddr, |
89bddce58 [NET] socket: cod... |
2370 |
uaddr_len); |
1da177e4c Linux-2.6.12-rc2 |
2371 |
if (err < 0) |
78df03e4c net: separate out... |
2372 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2373 |
} |
a2e272554 net: Introduce re... |
2374 |
err = __put_user((msg_sys->msg_flags & ~MSG_CMSG_COMPAT), |
37f7f421c [NET]: Do not lea... |
2375 |
COMPAT_FLAGS(msg)); |
1da177e4c Linux-2.6.12-rc2 |
2376 |
if (err) |
78df03e4c net: separate out... |
2377 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2378 |
if (MSG_CMSG_COMPAT & flags) |
a2e272554 net: Introduce re... |
2379 |
err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4c Linux-2.6.12-rc2 |
2380 2381 |
&msg_compat->msg_controllen); else |
a2e272554 net: Introduce re... |
2382 |
err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4c Linux-2.6.12-rc2 |
2383 2384 |
&msg->msg_controllen); if (err) |
78df03e4c net: separate out... |
2385 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2386 |
err = len; |
78df03e4c net: separate out... |
2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 |
out: return err; } static int ___sys_recvmsg(struct socket *sock, struct user_msghdr __user *msg, struct msghdr *msg_sys, unsigned int flags, int nosec) { struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; /* user mode address pointers */ struct sockaddr __user *uaddr; ssize_t err; err = recvmsg_copy_msghdr(msg_sys, msg, flags, &uaddr, &iov); if (err < 0) return err; |
1da177e4c Linux-2.6.12-rc2 |
2402 |
|
78df03e4c net: separate out... |
2403 |
err = ____sys_recvmsg(sock, msg_sys, msg, uaddr, flags, nosec); |
da1842849 net: switch impor... |
2404 |
kfree(iov); |
a2e272554 net: Introduce re... |
2405 2406 2407 2408 2409 2410 |
return err; } /* * BSD recvmsg interface */ |
d62459444 net: disallow anc... |
2411 |
long __sys_recvmsg_sock(struct socket *sock, struct user_msghdr __user *umsg, |
aa1fa28fc io_uring: add sup... |
2412 2413 |
unsigned int flags) { |
d62459444 net: disallow anc... |
2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 |
struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; struct sockaddr_storage address; struct msghdr msg = { .msg_name = &address }; struct sockaddr __user *uaddr; ssize_t err; err = recvmsg_copy_msghdr(&msg, umsg, flags, &uaddr, &iov); if (err) return err; /* disallow ancillary data requests from this path */ if (msg.msg_control || msg.msg_controllen) { err = -EINVAL; goto out; } |
aa1fa28fc io_uring: add sup... |
2428 |
|
d62459444 net: disallow anc... |
2429 2430 2431 2432 |
err = ____sys_recvmsg(sock, &msg, umsg, uaddr, flags, 0); out: kfree(iov); return err; |
aa1fa28fc io_uring: add sup... |
2433 |
} |
e1834a329 net: socket: move... |
2434 2435 |
long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat) |
a2e272554 net: Introduce re... |
2436 2437 2438 |
{ int fput_needed, err; struct msghdr msg_sys; |
1be374a05 net: Block MSG_CM... |
2439 |
struct socket *sock; |
e1834a329 net: socket: move... |
2440 2441 |
if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) return -EINVAL; |
1be374a05 net: Block MSG_CM... |
2442 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
a2e272554 net: Introduce re... |
2443 2444 |
if (!sock) goto out; |
a7526eb5d net: Unbreak comp... |
2445 |
err = ___sys_recvmsg(sock, msg, &msg_sys, flags, 0); |
a2e272554 net: Introduce re... |
2446 |
|
6cb153cab [NET]: use fget_l... |
2447 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
2448 2449 2450 |
out: return err; } |
666547ff5 separate kernel- ... |
2451 |
SYSCALL_DEFINE3(recvmsg, int, fd, struct user_msghdr __user *, msg, |
a7526eb5d net: Unbreak comp... |
2452 2453 |
unsigned int, flags) { |
e1834a329 net: socket: move... |
2454 |
return __sys_recvmsg(fd, msg, flags, true); |
a7526eb5d net: Unbreak comp... |
2455 |
} |
a2e272554 net: Introduce re... |
2456 2457 2458 |
/* * Linux recvmmsg interface */ |
e11d4284e y2038: socket: Ad... |
2459 2460 2461 |
static int do_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct timespec64 *timeout) |
a2e272554 net: Introduce re... |
2462 2463 2464 2465 |
{ int fput_needed, err, datagrams; struct socket *sock; struct mmsghdr __user *entry; |
d7256d0eb net: compat_mmsgh... |
2466 |
struct compat_mmsghdr __user *compat_entry; |
a2e272554 net: Introduce re... |
2467 |
struct msghdr msg_sys; |
766b9f928 fs: poll/select/r... |
2468 2469 |
struct timespec64 end_time; struct timespec64 timeout64; |
a2e272554 net: Introduce re... |
2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 |
if (timeout && poll_select_set_timeout(&end_time, timeout->tv_sec, timeout->tv_nsec)) return -EINVAL; datagrams = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) return err; |
7797dc414 socket: skip chec... |
2481 2482 2483 2484 2485 2486 |
if (likely(!(flags & MSG_ERRQUEUE))) { err = sock_error(sock->sk); if (err) { datagrams = err; goto out_put; } |
e623a9e9d net: socket: fix ... |
2487 |
} |
a2e272554 net: Introduce re... |
2488 2489 |
entry = mmsg; |
d7256d0eb net: compat_mmsgh... |
2490 |
compat_entry = (struct compat_mmsghdr __user *)mmsg; |
a2e272554 net: Introduce re... |
2491 2492 2493 2494 2495 |
while (datagrams < vlen) { /* * No need to ask LSM for more than the first datagram. */ |
d7256d0eb net: compat_mmsgh... |
2496 |
if (MSG_CMSG_COMPAT & flags) { |
666547ff5 separate kernel- ... |
2497 |
err = ___sys_recvmsg(sock, (struct user_msghdr __user *)compat_entry, |
a7526eb5d net: Unbreak comp... |
2498 2499 |
&msg_sys, flags & ~MSG_WAITFORONE, datagrams); |
d7256d0eb net: compat_mmsgh... |
2500 2501 2502 2503 2504 |
if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { |
a7526eb5d net: Unbreak comp... |
2505 |
err = ___sys_recvmsg(sock, |
666547ff5 separate kernel- ... |
2506 |
(struct user_msghdr __user *)entry, |
a7526eb5d net: Unbreak comp... |
2507 2508 |
&msg_sys, flags & ~MSG_WAITFORONE, datagrams); |
d7256d0eb net: compat_mmsgh... |
2509 2510 2511 2512 2513 |
if (err < 0) break; err = put_user(err, &entry->msg_len); ++entry; } |
a2e272554 net: Introduce re... |
2514 2515 |
if (err) break; |
a2e272554 net: Introduce re... |
2516 |
++datagrams; |
71c5c1595 net: Add MSG_WAIT... |
2517 2518 2519 |
/* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ if (flags & MSG_WAITFORONE) flags |= MSG_DONTWAIT; |
a2e272554 net: Introduce re... |
2520 |
if (timeout) { |
766b9f928 fs: poll/select/r... |
2521 |
ktime_get_ts64(&timeout64); |
c2e6c8567 y2038: socket: Ch... |
2522 |
*timeout = timespec64_sub(end_time, timeout64); |
a2e272554 net: Introduce re... |
2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 |
if (timeout->tv_sec < 0) { timeout->tv_sec = timeout->tv_nsec = 0; break; } /* Timeout, return less than vlen datagrams */ if (timeout->tv_nsec == 0 && timeout->tv_sec == 0) break; } /* Out of band data, return right away */ if (msg_sys.msg_flags & MSG_OOB) break; |
a78cb84c6 net: add scheduli... |
2536 |
cond_resched(); |
a2e272554 net: Introduce re... |
2537 |
} |
a2e272554 net: Introduce re... |
2538 |
if (err == 0) |
34b88a68f net: Fix use afte... |
2539 2540 2541 2542 2543 2544 |
goto out_put; if (datagrams == 0) { datagrams = err; goto out_put; } |
a2e272554 net: Introduce re... |
2545 |
|
34b88a68f net: Fix use afte... |
2546 2547 2548 2549 2550 |
/* * We may return less entries than requested (vlen) if the * sock is non block and there aren't enough datagrams... */ if (err != -EAGAIN) { |
a2e272554 net: Introduce re... |
2551 |
/* |
34b88a68f net: Fix use afte... |
2552 2553 2554 2555 |
* ... or if recvmsg returns an error after we * received some datagrams, where we record the * error to return on the next call or if the * app asks about it using getsockopt(SO_ERROR). |
a2e272554 net: Introduce re... |
2556 |
*/ |
34b88a68f net: Fix use afte... |
2557 |
sock->sk->sk_err = -err; |
a2e272554 net: Introduce re... |
2558 |
} |
34b88a68f net: Fix use afte... |
2559 2560 |
out_put: fput_light(sock->file, fput_needed); |
a2e272554 net: Introduce re... |
2561 |
|
34b88a68f net: Fix use afte... |
2562 |
return datagrams; |
a2e272554 net: Introduce re... |
2563 |
} |
e11d4284e y2038: socket: Ad... |
2564 2565 2566 2567 |
int __sys_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct __kernel_timespec __user *timeout, struct old_timespec32 __user *timeout32) |
a2e272554 net: Introduce re... |
2568 2569 |
{ int datagrams; |
c2e6c8567 y2038: socket: Ch... |
2570 |
struct timespec64 timeout_sys; |
a2e272554 net: Introduce re... |
2571 |
|
e11d4284e y2038: socket: Ad... |
2572 2573 |
if (timeout && get_timespec64(&timeout_sys, timeout)) return -EFAULT; |
a2e272554 net: Introduce re... |
2574 |
|
e11d4284e y2038: socket: Ad... |
2575 |
if (timeout32 && get_old_timespec32(&timeout_sys, timeout32)) |
a2e272554 net: Introduce re... |
2576 |
return -EFAULT; |
e11d4284e y2038: socket: Ad... |
2577 2578 2579 2580 |
if (!timeout && !timeout32) return do_recvmmsg(fd, mmsg, vlen, flags, NULL); datagrams = do_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys); |
a2e272554 net: Introduce re... |
2581 |
|
e11d4284e y2038: socket: Ad... |
2582 2583 2584 2585 2586 2587 2588 |
if (datagrams <= 0) return datagrams; if (timeout && put_timespec64(&timeout_sys, timeout)) datagrams = -EFAULT; if (timeout32 && put_old_timespec32(&timeout_sys, timeout32)) |
a2e272554 net: Introduce re... |
2589 2590 2591 2592 |
datagrams = -EFAULT; return datagrams; } |
1255e2690 net: socket: add ... |
2593 2594 |
SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags, |
c2e6c8567 y2038: socket: Ch... |
2595 |
struct __kernel_timespec __user *, timeout) |
1255e2690 net: socket: add ... |
2596 |
{ |
e11d4284e y2038: socket: Ad... |
2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 |
if (flags & MSG_CMSG_COMPAT) return -EINVAL; return __sys_recvmmsg(fd, mmsg, vlen, flags, timeout, NULL); } #ifdef CONFIG_COMPAT_32BIT_TIME SYSCALL_DEFINE5(recvmmsg_time32, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags, struct old_timespec32 __user *, timeout) { if (flags & MSG_CMSG_COMPAT) return -EINVAL; return __sys_recvmmsg(fd, mmsg, vlen, flags, NULL, timeout); |
1255e2690 net: socket: add ... |
2612 |
} |
e11d4284e y2038: socket: Ad... |
2613 |
#endif |
1255e2690 net: socket: add ... |
2614 |
|
a2e272554 net: Introduce re... |
2615 |
#ifdef __ARCH_WANT_SYS_SOCKETCALL |
1da177e4c Linux-2.6.12-rc2 |
2616 2617 |
/* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned long)) |
228e548e6 net: Add sendmmsg... |
2618 |
static const unsigned char nargs[21] = { |
c6d409cfd From abbffa2aa9bd... |
2619 2620 2621 |
AL(0), AL(3), AL(3), AL(3), AL(2), AL(3), AL(3), AL(3), AL(4), AL(4), AL(4), AL(6), AL(6), AL(2), AL(5), AL(5), AL(3), AL(3), |
228e548e6 net: Add sendmmsg... |
2622 |
AL(4), AL(5), AL(4) |
89bddce58 [NET] socket: cod... |
2623 |
}; |
1da177e4c Linux-2.6.12-rc2 |
2624 2625 2626 |
#undef AL /* |
89bddce58 [NET] socket: cod... |
2627 |
* System call vectors. |
1da177e4c Linux-2.6.12-rc2 |
2628 2629 2630 |
* * Argument checking cleaned up. Saved 20% in size. * This function doesn't need to set the kernel lock because |
89bddce58 [NET] socket: cod... |
2631 |
* it is set by the callees. |
1da177e4c Linux-2.6.12-rc2 |
2632 |
*/ |
3e0fa65f8 [CVE-2009-0029] S... |
2633 |
SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) |
1da177e4c Linux-2.6.12-rc2 |
2634 |
{ |
2950fa9d3 kernel: audit: be... |
2635 |
unsigned long a[AUDITSC_ARGS]; |
89bddce58 [NET] socket: cod... |
2636 |
unsigned long a0, a1; |
1da177e4c Linux-2.6.12-rc2 |
2637 |
int err; |
47379052b net: Add explicit... |
2638 |
unsigned int len; |
1da177e4c Linux-2.6.12-rc2 |
2639 |
|
228e548e6 net: Add sendmmsg... |
2640 |
if (call < 1 || call > SYS_SENDMMSG) |
1da177e4c Linux-2.6.12-rc2 |
2641 |
return -EINVAL; |
c8e8cd579 net: socket: fix ... |
2642 |
call = array_index_nospec(call, SYS_SENDMMSG + 1); |
1da177e4c Linux-2.6.12-rc2 |
2643 |
|
47379052b net: Add explicit... |
2644 2645 2646 |
len = nargs[call]; if (len > sizeof(a)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
2647 |
/* copy_from_user should be SMP safe. */ |
47379052b net: Add explicit... |
2648 |
if (copy_from_user(a, args, len)) |
1da177e4c Linux-2.6.12-rc2 |
2649 |
return -EFAULT; |
3ec3b2fba AUDIT: Capture sy... |
2650 |
|
2950fa9d3 kernel: audit: be... |
2651 2652 2653 |
err = audit_socketcall(nargs[call] / sizeof(unsigned long), a); if (err) return err; |
3ec3b2fba AUDIT: Capture sy... |
2654 |
|
89bddce58 [NET] socket: cod... |
2655 2656 2657 2658 2659 |
a0 = a[0]; a1 = a[1]; switch (call) { case SYS_SOCKET: |
9d6a15c3f net: socket: add ... |
2660 |
err = __sys_socket(a0, a1, a[2]); |
89bddce58 [NET] socket: cod... |
2661 2662 |
break; case SYS_BIND: |
a87d35d87 net: socket: add ... |
2663 |
err = __sys_bind(a0, (struct sockaddr __user *)a1, a[2]); |
89bddce58 [NET] socket: cod... |
2664 2665 |
break; case SYS_CONNECT: |
1387c2c2f net: socket: add ... |
2666 |
err = __sys_connect(a0, (struct sockaddr __user *)a1, a[2]); |
89bddce58 [NET] socket: cod... |
2667 2668 |
break; case SYS_LISTEN: |
25e290eed net: socket: add ... |
2669 |
err = __sys_listen(a0, a1); |
89bddce58 [NET] socket: cod... |
2670 2671 |
break; case SYS_ACCEPT: |
4541e8056 net: socket: add ... |
2672 2673 |
err = __sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], 0); |
89bddce58 [NET] socket: cod... |
2674 2675 2676 |
break; case SYS_GETSOCKNAME: err = |
8882a107b net: socket: add ... |
2677 2678 |
__sys_getsockname(a0, (struct sockaddr __user *)a1, (int __user *)a[2]); |
89bddce58 [NET] socket: cod... |
2679 2680 2681 |
break; case SYS_GETPEERNAME: err = |
b21c8f838 net: socket: add ... |
2682 2683 |
__sys_getpeername(a0, (struct sockaddr __user *)a1, (int __user *)a[2]); |
89bddce58 [NET] socket: cod... |
2684 2685 |
break; case SYS_SOCKETPAIR: |
6debc8d83 net: socket: add ... |
2686 |
err = __sys_socketpair(a0, a1, a[2], (int __user *)a[3]); |
89bddce58 [NET] socket: cod... |
2687 2688 |
break; case SYS_SEND: |
f3bf896b1 net: socket: repl... |
2689 2690 |
err = __sys_sendto(a0, (void __user *)a1, a[2], a[3], NULL, 0); |
89bddce58 [NET] socket: cod... |
2691 2692 |
break; case SYS_SENDTO: |
211b634b7 net: socket: add ... |
2693 2694 |
err = __sys_sendto(a0, (void __user *)a1, a[2], a[3], (struct sockaddr __user *)a[4], a[5]); |
89bddce58 [NET] socket: cod... |
2695 2696 |
break; case SYS_RECV: |
d27e9afc6 net: socket: repl... |
2697 2698 |
err = __sys_recvfrom(a0, (void __user *)a1, a[2], a[3], NULL, NULL); |
89bddce58 [NET] socket: cod... |
2699 2700 |
break; case SYS_RECVFROM: |
7a09e1eb9 net: socket: add ... |
2701 2702 2703 |
err = __sys_recvfrom(a0, (void __user *)a1, a[2], a[3], (struct sockaddr __user *)a[4], (int __user *)a[5]); |
89bddce58 [NET] socket: cod... |
2704 2705 |
break; case SYS_SHUTDOWN: |
005a1aeac net: socket: add ... |
2706 |
err = __sys_shutdown(a0, a1); |
89bddce58 [NET] socket: cod... |
2707 2708 |
break; case SYS_SETSOCKOPT: |
cc36dca0d net: socket: add ... |
2709 2710 |
err = __sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]); |
89bddce58 [NET] socket: cod... |
2711 2712 2713 |
break; case SYS_GETSOCKOPT: err = |
13a2d70e2 net: socket: add ... |
2714 2715 |
__sys_getsockopt(a0, a1, a[2], (char __user *)a[3], (int __user *)a[4]); |
89bddce58 [NET] socket: cod... |
2716 2717 |
break; case SYS_SENDMSG: |
e1834a329 net: socket: move... |
2718 2719 |
err = __sys_sendmsg(a0, (struct user_msghdr __user *)a1, a[2], true); |
89bddce58 [NET] socket: cod... |
2720 |
break; |
228e548e6 net: Add sendmmsg... |
2721 |
case SYS_SENDMMSG: |
e1834a329 net: socket: move... |
2722 2723 |
err = __sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], true); |
228e548e6 net: Add sendmmsg... |
2724 |
break; |
89bddce58 [NET] socket: cod... |
2725 |
case SYS_RECVMSG: |
e1834a329 net: socket: move... |
2726 2727 |
err = __sys_recvmsg(a0, (struct user_msghdr __user *)a1, a[2], true); |
89bddce58 [NET] socket: cod... |
2728 |
break; |
a2e272554 net: Introduce re... |
2729 |
case SYS_RECVMMSG: |
e11d4284e y2038: socket: Ad... |
2730 2731 2732 2733 2734 2735 2736 2737 2738 |
if (IS_ENABLED(CONFIG_64BIT) || !IS_ENABLED(CONFIG_64BIT_TIME)) err = __sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], (struct __kernel_timespec __user *)a[4], NULL); else err = __sys_recvmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], NULL, (struct old_timespec32 __user *)a[4]); |
a2e272554 net: Introduce re... |
2739 |
break; |
de11defeb reintroduce accept4 |
2740 |
case SYS_ACCEPT4: |
4541e8056 net: socket: add ... |
2741 2742 |
err = __sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], a[3]); |
aaca0bdca flag parameters: ... |
2743 |
break; |
89bddce58 [NET] socket: cod... |
2744 2745 2746 |
default: err = -EINVAL; break; |
1da177e4c Linux-2.6.12-rc2 |
2747 2748 2749 |
} return err; } |
89bddce58 [NET] socket: cod... |
2750 |
#endif /* __ARCH_WANT_SYS_SOCKETCALL */ |
1da177e4c Linux-2.6.12-rc2 |
2751 |
|
55737fda0 [NET]: socket fam... |
2752 2753 2754 2755 |
/** * sock_register - add a socket protocol handler * @ops: description of protocol * |
1da177e4c Linux-2.6.12-rc2 |
2756 2757 |
* This function is called by a protocol handler that wants to * advertise its address family, and have it linked into the |
e793c0f70 net: treewide: Fi... |
2758 |
* socket interface. The value ops->family corresponds to the |
55737fda0 [NET]: socket fam... |
2759 |
* socket system call protocol family. |
1da177e4c Linux-2.6.12-rc2 |
2760 |
*/ |
f0fd27d42 [NET]: sock_regis... |
2761 |
int sock_register(const struct net_proto_family *ops) |
1da177e4c Linux-2.6.12-rc2 |
2762 2763 2764 2765 |
{ int err; if (ops->family >= NPROTO) { |
3410f22ea socket: replace s... |
2766 2767 |
pr_crit("protocol %d >= NPROTO(%d) ", ops->family, NPROTO); |
1da177e4c Linux-2.6.12-rc2 |
2768 2769 |
return -ENOBUFS; } |
55737fda0 [NET]: socket fam... |
2770 2771 |
spin_lock(&net_family_lock); |
190683a9d net: net_families... |
2772 2773 |
if (rcu_dereference_protected(net_families[ops->family], lockdep_is_held(&net_family_lock))) |
55737fda0 [NET]: socket fam... |
2774 2775 |
err = -EEXIST; else { |
cf778b00e net: reintroduce ... |
2776 |
rcu_assign_pointer(net_families[ops->family], ops); |
1da177e4c Linux-2.6.12-rc2 |
2777 2778 |
err = 0; } |
55737fda0 [NET]: socket fam... |
2779 |
spin_unlock(&net_family_lock); |
3410f22ea socket: replace s... |
2780 2781 |
pr_info("NET: Registered protocol family %d ", ops->family); |
1da177e4c Linux-2.6.12-rc2 |
2782 2783 |
return err; } |
c6d409cfd From abbffa2aa9bd... |
2784 |
EXPORT_SYMBOL(sock_register); |
1da177e4c Linux-2.6.12-rc2 |
2785 |
|
55737fda0 [NET]: socket fam... |
2786 2787 2788 2789 |
/** * sock_unregister - remove a protocol handler * @family: protocol family to remove * |
1da177e4c Linux-2.6.12-rc2 |
2790 2791 |
* This function is called by a protocol handler that wants to * remove its address family, and have it unlinked from the |
55737fda0 [NET]: socket fam... |
2792 2793 2794 2795 2796 2797 |
* new socket creation. * * If protocol handler is a module, then it can use module reference * counts to protect against new references. If protocol handler is not * a module then it needs to provide its own protection in * the ops->create routine. |
1da177e4c Linux-2.6.12-rc2 |
2798 |
*/ |
f0fd27d42 [NET]: sock_regis... |
2799 |
void sock_unregister(int family) |
1da177e4c Linux-2.6.12-rc2 |
2800 |
{ |
f0fd27d42 [NET]: sock_regis... |
2801 |
BUG_ON(family < 0 || family >= NPROTO); |
1da177e4c Linux-2.6.12-rc2 |
2802 |
|
55737fda0 [NET]: socket fam... |
2803 |
spin_lock(&net_family_lock); |
a9b3cd7f3 rcu: convert uses... |
2804 |
RCU_INIT_POINTER(net_families[family], NULL); |
55737fda0 [NET]: socket fam... |
2805 2806 2807 |
spin_unlock(&net_family_lock); synchronize_rcu(); |
3410f22ea socket: replace s... |
2808 2809 |
pr_info("NET: Unregistered protocol family %d ", family); |
1da177e4c Linux-2.6.12-rc2 |
2810 |
} |
c6d409cfd From abbffa2aa9bd... |
2811 |
EXPORT_SYMBOL(sock_unregister); |
1da177e4c Linux-2.6.12-rc2 |
2812 |
|
bf2ae2e4b sock_diag: reques... |
2813 2814 |
bool sock_is_registered(int family) { |
66b51b0a0 net: sock_diag: F... |
2815 |
return family < NPROTO && rcu_access_pointer(net_families[family]); |
bf2ae2e4b sock_diag: reques... |
2816 |
} |
77d76ea31 [NET]: Small clea... |
2817 |
static int __init sock_init(void) |
1da177e4c Linux-2.6.12-rc2 |
2818 |
{ |
b3e19d924 fs: scale mntget/... |
2819 |
int err; |
2ca794e5e net sysctl: Initi... |
2820 2821 2822 2823 2824 2825 |
/* * Initialize the network sysctl infrastructure. */ err = net_sysctl_init(); if (err) goto out; |
b3e19d924 fs: scale mntget/... |
2826 |
|
1da177e4c Linux-2.6.12-rc2 |
2827 |
/* |
89bddce58 [NET] socket: cod... |
2828 |
* Initialize skbuff SLAB cache |
1da177e4c Linux-2.6.12-rc2 |
2829 2830 |
*/ skb_init(); |
1da177e4c Linux-2.6.12-rc2 |
2831 2832 |
/* |
89bddce58 [NET] socket: cod... |
2833 |
* Initialize the protocols module. |
1da177e4c Linux-2.6.12-rc2 |
2834 2835 2836 |
*/ init_inodecache(); |
b3e19d924 fs: scale mntget/... |
2837 2838 2839 2840 |
err = register_filesystem(&sock_fs_type); if (err) goto out_fs; |
1da177e4c Linux-2.6.12-rc2 |
2841 |
sock_mnt = kern_mount(&sock_fs_type); |
b3e19d924 fs: scale mntget/... |
2842 2843 2844 2845 |
if (IS_ERR(sock_mnt)) { err = PTR_ERR(sock_mnt); goto out_mount; } |
77d76ea31 [NET]: Small clea... |
2846 2847 |
/* The real protocol initialization is performed in later initcalls. |
1da177e4c Linux-2.6.12-rc2 |
2848 2849 2850 |
*/ #ifdef CONFIG_NETFILTER |
6d11cfdba netfilter: don't ... |
2851 2852 2853 |
err = netfilter_init(); if (err) goto out; |
1da177e4c Linux-2.6.12-rc2 |
2854 |
#endif |
cbeb321a6 [NET]: Fix sock_i... |
2855 |
|
408eccce3 net: ptp: move PT... |
2856 |
ptp_classifier_init(); |
c1f19b51d net: support time... |
2857 |
|
b3e19d924 fs: scale mntget/... |
2858 2859 2860 2861 2862 2863 2864 |
out: return err; out_mount: unregister_filesystem(&sock_fs_type); out_fs: goto out; |
1da177e4c Linux-2.6.12-rc2 |
2865 |
} |
77d76ea31 [NET]: Small clea... |
2866 |
core_initcall(sock_init); /* early initcall */ |
1da177e4c Linux-2.6.12-rc2 |
2867 2868 2869 |
#ifdef CONFIG_PROC_FS void socket_seq_show(struct seq_file *seq) { |
648845ab7 sock: Move the so... |
2870 2871 2872 |
seq_printf(seq, "sockets: used %d ", sock_inuse_get(seq->private)); |
1da177e4c Linux-2.6.12-rc2 |
2873 |
} |
89bddce58 [NET] socket: cod... |
2874 |
#endif /* CONFIG_PROC_FS */ |
1da177e4c Linux-2.6.12-rc2 |
2875 |
|
89bbfc95d [NET]: allow 32 b... |
2876 |
#ifdef CONFIG_COMPAT |
36fd633ec net: separate SIO... |
2877 |
static int compat_dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32) |
7a229387d net: copy socket ... |
2878 |
{ |
6b96018b2 compat: move sock... |
2879 |
struct compat_ifconf ifc32; |
7a229387d net: copy socket ... |
2880 |
struct ifconf ifc; |
7a229387d net: copy socket ... |
2881 |
int err; |
6b96018b2 compat: move sock... |
2882 |
if (copy_from_user(&ifc32, uifc32, sizeof(struct compat_ifconf))) |
7a229387d net: copy socket ... |
2883 |
return -EFAULT; |
36fd633ec net: separate SIO... |
2884 2885 |
ifc.ifc_len = ifc32.ifc_len; ifc.ifc_req = compat_ptr(ifc32.ifcbuf); |
7a229387d net: copy socket ... |
2886 |
|
36fd633ec net: separate SIO... |
2887 2888 2889 |
rtnl_lock(); err = dev_ifconf(net, &ifc, sizeof(struct compat_ifreq)); rtnl_unlock(); |
7a229387d net: copy socket ... |
2890 2891 |
if (err) return err; |
36fd633ec net: separate SIO... |
2892 |
ifc32.ifc_len = ifc.ifc_len; |
6b96018b2 compat: move sock... |
2893 |
if (copy_to_user(uifc32, &ifc32, sizeof(struct compat_ifconf))) |
7a229387d net: copy socket ... |
2894 2895 2896 2897 |
return -EFAULT; return 0; } |
6b96018b2 compat: move sock... |
2898 |
static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) |
7a229387d net: copy socket ... |
2899 |
{ |
3a7da39d1 ethtool: Compat h... |
2900 2901 |
struct compat_ethtool_rxnfc __user *compat_rxnfc; bool convert_in = false, convert_out = false; |
44c02a2c3 dev_ioctl(): move... |
2902 2903 2904 |
size_t buf_size = 0; struct ethtool_rxnfc __user *rxnfc = NULL; struct ifreq ifr; |
3a7da39d1 ethtool: Compat h... |
2905 2906 |
u32 rule_cnt = 0, actual_rule_cnt; u32 ethcmd; |
7a229387d net: copy socket ... |
2907 |
u32 data; |
3a7da39d1 ethtool: Compat h... |
2908 |
int ret; |
7a229387d net: copy socket ... |
2909 |
|
3a7da39d1 ethtool: Compat h... |
2910 2911 |
if (get_user(data, &ifr32->ifr_ifru.ifru_data)) return -EFAULT; |
7a229387d net: copy socket ... |
2912 |
|
3a7da39d1 ethtool: Compat h... |
2913 2914 2915 |
compat_rxnfc = compat_ptr(data); if (get_user(ethcmd, &compat_rxnfc->cmd)) |
7a229387d net: copy socket ... |
2916 |
return -EFAULT; |
3a7da39d1 ethtool: Compat h... |
2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 |
/* Most ethtool structures are defined without padding. * Unfortunately struct ethtool_rxnfc is an exception. */ switch (ethcmd) { default: break; case ETHTOOL_GRXCLSRLALL: /* Buffer size is variable */ if (get_user(rule_cnt, &compat_rxnfc->rule_cnt)) return -EFAULT; if (rule_cnt > KMALLOC_MAX_SIZE / sizeof(u32)) return -ENOMEM; buf_size += rule_cnt * sizeof(u32); /* fall through */ case ETHTOOL_GRXRINGS: case ETHTOOL_GRXCLSRLCNT: case ETHTOOL_GRXCLSRULE: |
55664f324 ethtool: Allow dr... |
2934 |
case ETHTOOL_SRXCLSRLINS: |
3a7da39d1 ethtool: Compat h... |
2935 2936 2937 |
convert_out = true; /* fall through */ case ETHTOOL_SRXCLSRLDEL: |
3a7da39d1 ethtool: Compat h... |
2938 2939 |
buf_size += sizeof(struct ethtool_rxnfc); convert_in = true; |
44c02a2c3 dev_ioctl(): move... |
2940 |
rxnfc = compat_alloc_user_space(buf_size); |
3a7da39d1 ethtool: Compat h... |
2941 2942 |
break; } |
44c02a2c3 dev_ioctl(): move... |
2943 |
if (copy_from_user(&ifr.ifr_name, &ifr32->ifr_name, IFNAMSIZ)) |
7a229387d net: copy socket ... |
2944 |
return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
2945 |
ifr.ifr_data = convert_in ? rxnfc : (void __user *)compat_rxnfc; |
7a229387d net: copy socket ... |
2946 |
|
3a7da39d1 ethtool: Compat h... |
2947 |
if (convert_in) { |
127fe533a v3 ethtool: add n... |
2948 |
/* We expect there to be holes between fs.m_ext and |
3a7da39d1 ethtool: Compat h... |
2949 2950 |
* fs.ring_cookie and at the end of fs, but nowhere else. */ |
127fe533a v3 ethtool: add n... |
2951 2952 2953 2954 |
BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + sizeof(compat_rxnfc->fs.m_ext) != offsetof(struct ethtool_rxnfc, fs.m_ext) + sizeof(rxnfc->fs.m_ext)); |
3a7da39d1 ethtool: Compat h... |
2955 2956 2957 2958 2959 2960 2961 |
BUILD_BUG_ON( offsetof(struct compat_ethtool_rxnfc, fs.location) - offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != offsetof(struct ethtool_rxnfc, fs.location) - offsetof(struct ethtool_rxnfc, fs.ring_cookie)); if (copy_in_user(rxnfc, compat_rxnfc, |
954b12445 ethtool: fix spar... |
2962 2963 |
(void __user *)(&rxnfc->fs.m_ext + 1) - (void __user *)rxnfc) || |
3a7da39d1 ethtool: Compat h... |
2964 2965 |
copy_in_user(&rxnfc->fs.ring_cookie, &compat_rxnfc->fs.ring_cookie, |
954b12445 ethtool: fix spar... |
2966 |
(void __user *)(&rxnfc->fs.location + 1) - |
b6168562c net: socket: fix ... |
2967 2968 2969 2970 2971 2972 2973 2974 |
(void __user *)&rxnfc->fs.ring_cookie)) return -EFAULT; if (ethcmd == ETHTOOL_GRXCLSRLALL) { if (put_user(rule_cnt, &rxnfc->rule_cnt)) return -EFAULT; } else if (copy_in_user(&rxnfc->rule_cnt, &compat_rxnfc->rule_cnt, sizeof(rxnfc->rule_cnt))) |
3a7da39d1 ethtool: Compat h... |
2975 2976 |
return -EFAULT; } |
44c02a2c3 dev_ioctl(): move... |
2977 |
ret = dev_ioctl(net, SIOCETHTOOL, &ifr, NULL); |
3a7da39d1 ethtool: Compat h... |
2978 2979 2980 2981 2982 |
if (ret) return ret; if (convert_out) { if (copy_in_user(compat_rxnfc, rxnfc, |
954b12445 ethtool: fix spar... |
2983 2984 |
(const void __user *)(&rxnfc->fs.m_ext + 1) - (const void __user *)rxnfc) || |
3a7da39d1 ethtool: Compat h... |
2985 2986 |
copy_in_user(&compat_rxnfc->fs.ring_cookie, &rxnfc->fs.ring_cookie, |
954b12445 ethtool: fix spar... |
2987 2988 |
(const void __user *)(&rxnfc->fs.location + 1) - (const void __user *)&rxnfc->fs.ring_cookie) || |
3a7da39d1 ethtool: Compat h... |
2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 |
copy_in_user(&compat_rxnfc->rule_cnt, &rxnfc->rule_cnt, sizeof(rxnfc->rule_cnt))) return -EFAULT; if (ethcmd == ETHTOOL_GRXCLSRLALL) { /* As an optimisation, we only copy the actual * number of rules that the underlying * function returned. Since Mallory might * change the rule count in user memory, we * check that it is less than the rule count * originally given (as the user buffer size), * which has been range-checked. */ if (get_user(actual_rule_cnt, &rxnfc->rule_cnt)) return -EFAULT; if (actual_rule_cnt < rule_cnt) rule_cnt = actual_rule_cnt; if (copy_in_user(&compat_rxnfc->rule_locs[0], &rxnfc->rule_locs[0], rule_cnt * sizeof(u32))) return -EFAULT; } } return 0; |
7a229387d net: copy socket ... |
3014 |
} |
7a50a240c net/compat_ioctl:... |
3015 3016 |
static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32) { |
7a50a240c net/compat_ioctl:... |
3017 |
compat_uptr_t uptr32; |
44c02a2c3 dev_ioctl(): move... |
3018 3019 3020 |
struct ifreq ifr; void __user *saved; int err; |
7a50a240c net/compat_ioctl:... |
3021 |
|
44c02a2c3 dev_ioctl(): move... |
3022 |
if (copy_from_user(&ifr, uifr32, sizeof(struct compat_ifreq))) |
7a50a240c net/compat_ioctl:... |
3023 3024 3025 3026 |
return -EFAULT; if (get_user(uptr32, &uifr32->ifr_settings.ifs_ifsu)) return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3027 3028 |
saved = ifr.ifr_settings.ifs_ifsu.raw_hdlc; ifr.ifr_settings.ifs_ifsu.raw_hdlc = compat_ptr(uptr32); |
7a229387d net: copy socket ... |
3029 |
|
44c02a2c3 dev_ioctl(): move... |
3030 3031 3032 3033 3034 |
err = dev_ioctl(net, SIOCWANDEV, &ifr, NULL); if (!err) { ifr.ifr_settings.ifs_ifsu.raw_hdlc = saved; if (copy_to_user(uifr32, &ifr, sizeof(struct compat_ifreq))) err = -EFAULT; |
ccbd6a5a4 net: Remove unnec... |
3035 |
} |
44c02a2c3 dev_ioctl(): move... |
3036 |
return err; |
7a229387d net: copy socket ... |
3037 |
} |
590d4693f net/compat: Merge... |
3038 3039 |
/* Handle ioctls that use ifreq::ifr_data and just need struct ifreq converted */ static int compat_ifr_data_ioctl(struct net *net, unsigned int cmd, |
6b96018b2 compat: move sock... |
3040 |
struct compat_ifreq __user *u_ifreq32) |
7a229387d net: copy socket ... |
3041 |
{ |
44c02a2c3 dev_ioctl(): move... |
3042 |
struct ifreq ifreq; |
7a229387d net: copy socket ... |
3043 |
u32 data32; |
44c02a2c3 dev_ioctl(): move... |
3044 |
if (copy_from_user(ifreq.ifr_name, u_ifreq32->ifr_name, IFNAMSIZ)) |
7a229387d net: copy socket ... |
3045 |
return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3046 |
if (get_user(data32, &u_ifreq32->ifr_data)) |
7a229387d net: copy socket ... |
3047 |
return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3048 |
ifreq.ifr_data = compat_ptr(data32); |
7a229387d net: copy socket ... |
3049 |
|
44c02a2c3 dev_ioctl(): move... |
3050 |
return dev_ioctl(net, cmd, &ifreq, NULL); |
7a229387d net: copy socket ... |
3051 |
} |
37ac39bdd Revert "kill dev_... |
3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 |
static int compat_ifreq_ioctl(struct net *net, struct socket *sock, unsigned int cmd, struct compat_ifreq __user *uifr32) { struct ifreq __user *uifr; int err; /* Handle the fact that while struct ifreq has the same *layout* on * 32/64 for everything but ifreq::ifru_ifmap and ifreq::ifru_data, * which are handled elsewhere, it still has different *size* due to * ifreq::ifru_ifmap (which is 16 bytes on 32 bit, 24 bytes on 64-bit, * resulting in struct ifreq being 32 and 40 bytes respectively). * As a result, if the struct happens to be at the end of a page and * the next page isn't readable/writable, we get a fault. To prevent * that, copy back and forth to the full size. */ uifr = compat_alloc_user_space(sizeof(*uifr)); if (copy_in_user(uifr, uifr32, sizeof(*uifr32))) return -EFAULT; err = sock_do_ioctl(net, sock, cmd, (unsigned long)uifr); if (!err) { switch (cmd) { case SIOCGIFFLAGS: case SIOCGIFMETRIC: case SIOCGIFMTU: case SIOCGIFMEM: case SIOCGIFHWADDR: case SIOCGIFINDEX: case SIOCGIFADDR: case SIOCGIFBRDADDR: case SIOCGIFDSTADDR: case SIOCGIFNETMASK: case SIOCGIFPFLAGS: case SIOCGIFTXQLEN: case SIOCGMIIPHY: case SIOCGMIIREG: |
c6c9fee35 net: socket: fix ... |
3091 |
case SIOCGIFNAME: |
37ac39bdd Revert "kill dev_... |
3092 3093 3094 3095 3096 3097 3098 |
if (copy_in_user(uifr32, uifr, sizeof(*uifr32))) err = -EFAULT; break; } } return err; } |
a2116ed22 net/compat: fix d... |
3099 3100 3101 3102 3103 |
static int compat_sioc_ifmap(struct net *net, unsigned int cmd, struct compat_ifreq __user *uifr32) { struct ifreq ifr; struct compat_ifmap __user *uifmap32; |
a2116ed22 net/compat: fix d... |
3104 3105 3106 3107 |
int err; uifmap32 = &uifr32->ifr_ifru.ifru_map; err = copy_from_user(&ifr, uifr32, sizeof(ifr.ifr_name)); |
3ddc5b46a kernel-wide: fix ... |
3108 3109 3110 3111 3112 3113 |
err |= get_user(ifr.ifr_map.mem_start, &uifmap32->mem_start); err |= get_user(ifr.ifr_map.mem_end, &uifmap32->mem_end); err |= get_user(ifr.ifr_map.base_addr, &uifmap32->base_addr); err |= get_user(ifr.ifr_map.irq, &uifmap32->irq); err |= get_user(ifr.ifr_map.dma, &uifmap32->dma); err |= get_user(ifr.ifr_map.port, &uifmap32->port); |
a2116ed22 net/compat: fix d... |
3114 3115 |
if (err) return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3116 |
err = dev_ioctl(net, cmd, &ifr, NULL); |
a2116ed22 net/compat: fix d... |
3117 3118 3119 |
if (cmd == SIOCGIFMAP && !err) { err = copy_to_user(uifr32, &ifr, sizeof(ifr.ifr_name)); |
3ddc5b46a kernel-wide: fix ... |
3120 3121 3122 3123 3124 3125 |
err |= put_user(ifr.ifr_map.mem_start, &uifmap32->mem_start); err |= put_user(ifr.ifr_map.mem_end, &uifmap32->mem_end); err |= put_user(ifr.ifr_map.base_addr, &uifmap32->base_addr); err |= put_user(ifr.ifr_map.irq, &uifmap32->irq); err |= put_user(ifr.ifr_map.dma, &uifmap32->dma); err |= put_user(ifr.ifr_map.port, &uifmap32->port); |
a2116ed22 net/compat: fix d... |
3126 3127 3128 3129 3130 |
if (err) err = -EFAULT; } return err; } |
7a229387d net: copy socket ... |
3131 |
struct rtentry32 { |
c6d409cfd From abbffa2aa9bd... |
3132 |
u32 rt_pad1; |
7a229387d net: copy socket ... |
3133 3134 3135 |
struct sockaddr rt_dst; /* target address */ struct sockaddr rt_gateway; /* gateway addr (RTF_GATEWAY) */ struct sockaddr rt_genmask; /* target network mask (IP) */ |
c6d409cfd From abbffa2aa9bd... |
3136 3137 3138 3139 3140 3141 3142 |
unsigned short rt_flags; short rt_pad2; u32 rt_pad3; unsigned char rt_tos; unsigned char rt_class; short rt_pad4; short rt_metric; /* +1 for binary compatibility! */ |
7a229387d net: copy socket ... |
3143 |
/* char * */ u32 rt_dev; /* forcing the device at add */ |
c6d409cfd From abbffa2aa9bd... |
3144 3145 |
u32 rt_mtu; /* per route MTU/Window */ u32 rt_window; /* Window clamping */ |
7a229387d net: copy socket ... |
3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 |
unsigned short rt_irtt; /* Initial RTT */ }; struct in6_rtmsg32 { struct in6_addr rtmsg_dst; struct in6_addr rtmsg_src; struct in6_addr rtmsg_gateway; u32 rtmsg_type; u16 rtmsg_dst_len; u16 rtmsg_src_len; u32 rtmsg_metric; u32 rtmsg_info; u32 rtmsg_flags; s32 rtmsg_ifindex; }; |
6b96018b2 compat: move sock... |
3161 3162 |
static int routing_ioctl(struct net *net, struct socket *sock, unsigned int cmd, void __user *argp) |
7a229387d net: copy socket ... |
3163 3164 3165 3166 3167 3168 3169 3170 |
{ int ret; void *r = NULL; struct in6_rtmsg r6; struct rtentry r4; char devname[16]; u32 rtdev; mm_segment_t old_fs = get_fs(); |
6b96018b2 compat: move sock... |
3171 3172 |
if (sock && sock->sk && sock->sk->sk_family == AF_INET6) { /* ipv6 */ struct in6_rtmsg32 __user *ur6 = argp; |
c6d409cfd From abbffa2aa9bd... |
3173 |
ret = copy_from_user(&r6.rtmsg_dst, &(ur6->rtmsg_dst), |
7a229387d net: copy socket ... |
3174 |
3 * sizeof(struct in6_addr)); |
3ddc5b46a kernel-wide: fix ... |
3175 3176 3177 3178 3179 3180 3181 |
ret |= get_user(r6.rtmsg_type, &(ur6->rtmsg_type)); ret |= get_user(r6.rtmsg_dst_len, &(ur6->rtmsg_dst_len)); ret |= get_user(r6.rtmsg_src_len, &(ur6->rtmsg_src_len)); ret |= get_user(r6.rtmsg_metric, &(ur6->rtmsg_metric)); ret |= get_user(r6.rtmsg_info, &(ur6->rtmsg_info)); ret |= get_user(r6.rtmsg_flags, &(ur6->rtmsg_flags)); ret |= get_user(r6.rtmsg_ifindex, &(ur6->rtmsg_ifindex)); |
7a229387d net: copy socket ... |
3182 3183 3184 |
r = (void *) &r6; } else { /* ipv4 */ |
6b96018b2 compat: move sock... |
3185 |
struct rtentry32 __user *ur4 = argp; |
c6d409cfd From abbffa2aa9bd... |
3186 |
ret = copy_from_user(&r4.rt_dst, &(ur4->rt_dst), |
7a229387d net: copy socket ... |
3187 |
3 * sizeof(struct sockaddr)); |
3ddc5b46a kernel-wide: fix ... |
3188 3189 3190 3191 3192 3193 |
ret |= get_user(r4.rt_flags, &(ur4->rt_flags)); ret |= get_user(r4.rt_metric, &(ur4->rt_metric)); ret |= get_user(r4.rt_mtu, &(ur4->rt_mtu)); ret |= get_user(r4.rt_window, &(ur4->rt_window)); ret |= get_user(r4.rt_irtt, &(ur4->rt_irtt)); ret |= get_user(rtdev, &(ur4->rt_dev)); |
7a229387d net: copy socket ... |
3194 |
if (rtdev) { |
c6d409cfd From abbffa2aa9bd... |
3195 |
ret |= copy_from_user(devname, compat_ptr(rtdev), 15); |
c3f52ae6a socket: suppress ... |
3196 3197 |
r4.rt_dev = (char __user __force *)devname; devname[15] = 0; |
7a229387d net: copy socket ... |
3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 |
} else r4.rt_dev = NULL; r = (void *) &r4; } if (ret) { ret = -EFAULT; goto out; } |
c6d409cfd From abbffa2aa9bd... |
3208 |
set_fs(KERNEL_DS); |
63ff03ab7 Revert "socket: f... |
3209 |
ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r); |
c6d409cfd From abbffa2aa9bd... |
3210 |
set_fs(old_fs); |
7a229387d net: copy socket ... |
3211 3212 |
out: |
7a229387d net: copy socket ... |
3213 3214 3215 3216 3217 |
return ret; } /* Since old style bridge ioctl's endup using SIOCDEVPRIVATE * for some operations; this forces use of the newer bridge-utils that |
25985edce Fix common misspe... |
3218 |
* use compatible ioctls |
7a229387d net: copy socket ... |
3219 |
*/ |
6b96018b2 compat: move sock... |
3220 |
static int old_bridge_ioctl(compat_ulong_t __user *argp) |
7a229387d net: copy socket ... |
3221 |
{ |
6b96018b2 compat: move sock... |
3222 |
compat_ulong_t tmp; |
7a229387d net: copy socket ... |
3223 |
|
6b96018b2 compat: move sock... |
3224 |
if (get_user(tmp, argp)) |
7a229387d net: copy socket ... |
3225 3226 3227 3228 3229 |
return -EFAULT; if (tmp == BRCTL_GET_VERSION) return BRCTL_VERSION + 1; return -EINVAL; } |
6b96018b2 compat: move sock... |
3230 3231 3232 3233 3234 3235 |
static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, unsigned int cmd, unsigned long arg) { void __user *argp = compat_ptr(arg); struct sock *sk = sock->sk; struct net *net = sock_net(sk); |
7a229387d net: copy socket ... |
3236 |
|
6b96018b2 compat: move sock... |
3237 |
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) |
590d4693f net/compat: Merge... |
3238 |
return compat_ifr_data_ioctl(net, cmd, argp); |
6b96018b2 compat: move sock... |
3239 3240 3241 3242 3243 |
switch (cmd) { case SIOCSIFBR: case SIOCGIFBR: return old_bridge_ioctl(argp); |
6b96018b2 compat: move sock... |
3244 |
case SIOCGIFCONF: |
36fd633ec net: separate SIO... |
3245 |
return compat_dev_ifconf(net, argp); |
6b96018b2 compat: move sock... |
3246 3247 |
case SIOCETHTOOL: return ethtool_ioctl(net, argp); |
7a50a240c net/compat_ioctl:... |
3248 3249 |
case SIOCWANDEV: return compat_siocwandev(net, argp); |
a2116ed22 net/compat: fix d... |
3250 3251 3252 |
case SIOCGIFMAP: case SIOCSIFMAP: return compat_sioc_ifmap(net, cmd, argp); |
6b96018b2 compat: move sock... |
3253 3254 3255 |
case SIOCADDRT: case SIOCDELRT: return routing_ioctl(net, sock, cmd, argp); |
0768e1707 net: socket: impl... |
3256 3257 |
case SIOCGSTAMP_OLD: case SIOCGSTAMPNS_OLD: |
c7cbdbf29 net: rework SIOCG... |
3258 3259 |
if (!sock->ops->gettstamp) return -ENOIOCTLCMD; |
0768e1707 net: socket: impl... |
3260 |
return sock->ops->gettstamp(sock, argp, cmd == SIOCGSTAMP_OLD, |
c7cbdbf29 net: rework SIOCG... |
3261 |
!COMPAT_USE_64BIT_TIME); |
590d4693f net/compat: Merge... |
3262 3263 |
case SIOCBONDSLAVEINFOQUERY: case SIOCBONDINFOQUERY: |
a2116ed22 net/compat: fix d... |
3264 |
case SIOCSHWTSTAMP: |
fd468c74b net_tstamp: Add S... |
3265 |
case SIOCGHWTSTAMP: |
590d4693f net/compat: Merge... |
3266 |
return compat_ifr_data_ioctl(net, cmd, argp); |
6b96018b2 compat: move sock... |
3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 |
case FIOSETOWN: case SIOCSPGRP: case FIOGETOWN: case SIOCGPGRP: case SIOCBRADDBR: case SIOCBRDELBR: case SIOCGIFVLAN: case SIOCSIFVLAN: case SIOCADDDLCI: case SIOCDELDLCI: |
c62cce2ca net: add an ioctl... |
3278 |
case SIOCGSKNS: |
0768e1707 net: socket: impl... |
3279 3280 |
case SIOCGSTAMP_NEW: case SIOCGSTAMPNS_NEW: |
6b96018b2 compat: move sock... |
3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 |
return sock_ioctl(file, cmd, arg); case SIOCGIFFLAGS: case SIOCSIFFLAGS: case SIOCGIFMETRIC: case SIOCSIFMETRIC: case SIOCGIFMTU: case SIOCSIFMTU: case SIOCGIFMEM: case SIOCSIFMEM: case SIOCGIFHWADDR: case SIOCSIFHWADDR: case SIOCADDMULTI: case SIOCDELMULTI: case SIOCGIFINDEX: |
6b96018b2 compat: move sock... |
3296 3297 3298 |
case SIOCGIFADDR: case SIOCSIFADDR: case SIOCSIFHWBROADCAST: |
6b96018b2 compat: move sock... |
3299 |
case SIOCDIFADDR: |
6b96018b2 compat: move sock... |
3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 |
case SIOCGIFBRDADDR: case SIOCSIFBRDADDR: case SIOCGIFDSTADDR: case SIOCSIFDSTADDR: case SIOCGIFNETMASK: case SIOCSIFNETMASK: case SIOCSIFPFLAGS: case SIOCGIFPFLAGS: case SIOCGIFTXQLEN: case SIOCSIFTXQLEN: case SIOCBRADDIF: case SIOCBRDELIF: |
c6c9fee35 net: socket: fix ... |
3312 |
case SIOCGIFNAME: |
9177efd39 net, compat_ioctl... |
3313 3314 3315 3316 |
case SIOCSIFNAME: case SIOCGMIIPHY: case SIOCGMIIREG: case SIOCSMIIREG: |
f92d4fc95 kill bond_ioctl() |
3317 3318 3319 3320 |
case SIOCBONDENSLAVE: case SIOCBONDRELEASE: case SIOCBONDSETHWADDR: case SIOCBONDCHANGEACTIVE: |
37ac39bdd Revert "kill dev_... |
3321 |
return compat_ifreq_ioctl(net, sock, cmd, argp); |
6b96018b2 compat: move sock... |
3322 3323 3324 |
case SIOCSARP: case SIOCGARP: case SIOCDARP: |
8b4b4582d compat_ioctl: han... |
3325 |
case SIOCOUTQNSD: |
6b96018b2 compat: move sock... |
3326 |
case SIOCATMARK: |
63ff03ab7 Revert "socket: f... |
3327 |
return sock_do_ioctl(net, sock, cmd, arg); |
9177efd39 net, compat_ioctl... |
3328 |
} |
6b96018b2 compat: move sock... |
3329 3330 |
return -ENOIOCTLCMD; } |
7a229387d net: copy socket ... |
3331 |
|
95c961747 net: cleanup unsi... |
3332 |
static long compat_sock_ioctl(struct file *file, unsigned int cmd, |
89bddce58 [NET] socket: cod... |
3333 |
unsigned long arg) |
89bbfc95d [NET]: allow 32 b... |
3334 3335 3336 |
{ struct socket *sock = file->private_data; int ret = -ENOIOCTLCMD; |
87de87d5e wext: Dispatch an... |
3337 3338 3339 3340 3341 |
struct sock *sk; struct net *net; sk = sock->sk; net = sock_net(sk); |
89bbfc95d [NET]: allow 32 b... |
3342 3343 3344 |
if (sock->ops->compat_ioctl) ret = sock->ops->compat_ioctl(sock, cmd, arg); |
87de87d5e wext: Dispatch an... |
3345 3346 3347 |
if (ret == -ENOIOCTLCMD && (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)) ret = compat_wext_handle_ioctl(net, cmd, arg); |
6b96018b2 compat: move sock... |
3348 3349 |
if (ret == -ENOIOCTLCMD) ret = compat_sock_ioctl_trans(file, sock, cmd, arg); |
89bbfc95d [NET]: allow 32 b... |
3350 3351 3352 |
return ret; } #endif |
8a3c245c0 net: add document... |
3353 3354 3355 3356 3357 3358 3359 3360 |
/** * kernel_bind - bind an address to a socket (kernel space) * @sock: socket * @addr: address * @addrlen: length of address * * Returns 0 or an error. */ |
ac5a488ef [NET]: Round out ... |
3361 3362 3363 3364 |
int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen) { return sock->ops->bind(sock, addr, addrlen); } |
c6d409cfd From abbffa2aa9bd... |
3365 |
EXPORT_SYMBOL(kernel_bind); |
ac5a488ef [NET]: Round out ... |
3366 |
|
8a3c245c0 net: add document... |
3367 3368 3369 3370 3371 3372 3373 |
/** * kernel_listen - move socket to listening state (kernel space) * @sock: socket * @backlog: pending connections queue size * * Returns 0 or an error. */ |
ac5a488ef [NET]: Round out ... |
3374 3375 3376 3377 |
int kernel_listen(struct socket *sock, int backlog) { return sock->ops->listen(sock, backlog); } |
c6d409cfd From abbffa2aa9bd... |
3378 |
EXPORT_SYMBOL(kernel_listen); |
ac5a488ef [NET]: Round out ... |
3379 |
|
8a3c245c0 net: add document... |
3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 |
/** * kernel_accept - accept a connection (kernel space) * @sock: listening socket * @newsock: new connected socket * @flags: flags * * @flags must be SOCK_CLOEXEC, SOCK_NONBLOCK or 0. * If it fails, @newsock is guaranteed to be %NULL. * Returns 0 or an error. */ |
ac5a488ef [NET]: Round out ... |
3390 3391 3392 3393 3394 3395 3396 3397 3398 |
int kernel_accept(struct socket *sock, struct socket **newsock, int flags) { struct sock *sk = sock->sk; int err; err = sock_create_lite(sk->sk_family, sk->sk_type, sk->sk_protocol, newsock); if (err < 0) goto done; |
cdfbabfb2 net: Work around ... |
3399 |
err = sock->ops->accept(sock, *newsock, flags, true); |
ac5a488ef [NET]: Round out ... |
3400 3401 |
if (err < 0) { sock_release(*newsock); |
fa8705b00 [NET]: sanitize k... |
3402 |
*newsock = NULL; |
ac5a488ef [NET]: Round out ... |
3403 3404 3405 3406 |
goto done; } (*newsock)->ops = sock->ops; |
1b08534e5 net: Fix module r... |
3407 |
__module_get((*newsock)->ops->owner); |
ac5a488ef [NET]: Round out ... |
3408 3409 3410 3411 |
done: return err; } |
c6d409cfd From abbffa2aa9bd... |
3412 |
EXPORT_SYMBOL(kernel_accept); |
ac5a488ef [NET]: Round out ... |
3413 |
|
8a3c245c0 net: add document... |
3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 |
/** * kernel_connect - connect a socket (kernel space) * @sock: socket * @addr: address * @addrlen: address length * @flags: flags (O_NONBLOCK, ...) * * For datagram sockets, @addr is the addres to which datagrams are sent * by default, and the only address from which datagrams are received. * For stream sockets, attempts to connect to @addr. * Returns 0 or an error code. */ |
ac5a488ef [NET]: Round out ... |
3426 |
int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen, |
4768fbcbc [NET]: Fix whites... |
3427 |
int flags) |
ac5a488ef [NET]: Round out ... |
3428 3429 3430 |
{ return sock->ops->connect(sock, addr, addrlen, flags); } |
c6d409cfd From abbffa2aa9bd... |
3431 |
EXPORT_SYMBOL(kernel_connect); |
ac5a488ef [NET]: Round out ... |
3432 |
|
8a3c245c0 net: add document... |
3433 3434 3435 3436 3437 3438 3439 3440 |
/** * kernel_getsockname - get the address which the socket is bound (kernel space) * @sock: socket * @addr: address holder * * Fills the @addr pointer with the address which the socket is bound. * Returns 0 or an error code. */ |
9b2c45d47 net: make getname... |
3441 |
int kernel_getsockname(struct socket *sock, struct sockaddr *addr) |
ac5a488ef [NET]: Round out ... |
3442 |
{ |
9b2c45d47 net: make getname... |
3443 |
return sock->ops->getname(sock, addr, 0); |
ac5a488ef [NET]: Round out ... |
3444 |
} |
c6d409cfd From abbffa2aa9bd... |
3445 |
EXPORT_SYMBOL(kernel_getsockname); |
ac5a488ef [NET]: Round out ... |
3446 |
|
8a3c245c0 net: add document... |
3447 3448 3449 3450 3451 3452 3453 3454 |
/** * kernel_peername - get the address which the socket is connected (kernel space) * @sock: socket * @addr: address holder * * Fills the @addr pointer with the address which the socket is connected. * Returns 0 or an error code. */ |
9b2c45d47 net: make getname... |
3455 |
int kernel_getpeername(struct socket *sock, struct sockaddr *addr) |
ac5a488ef [NET]: Round out ... |
3456 |
{ |
9b2c45d47 net: make getname... |
3457 |
return sock->ops->getname(sock, addr, 1); |
ac5a488ef [NET]: Round out ... |
3458 |
} |
c6d409cfd From abbffa2aa9bd... |
3459 |
EXPORT_SYMBOL(kernel_getpeername); |
ac5a488ef [NET]: Round out ... |
3460 |
|
8a3c245c0 net: add document... |
3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 |
/** * kernel_getsockopt - get a socket option (kernel space) * @sock: socket * @level: API level (SOL_SOCKET, ...) * @optname: option tag * @optval: option value * @optlen: option length * * Assigns the option length to @optlen. * Returns 0 or an error. */ |
ac5a488ef [NET]: Round out ... |
3472 3473 3474 3475 |
int kernel_getsockopt(struct socket *sock, int level, int optname, char *optval, int *optlen) { mm_segment_t oldfs = get_fs(); |
fb8621bb6 net: remove addre... |
3476 3477 |
char __user *uoptval; int __user *uoptlen; |
ac5a488ef [NET]: Round out ... |
3478 |
int err; |
fb8621bb6 net: remove addre... |
3479 3480 |
uoptval = (char __user __force *) optval; uoptlen = (int __user __force *) optlen; |
ac5a488ef [NET]: Round out ... |
3481 3482 |
set_fs(KERNEL_DS); if (level == SOL_SOCKET) |
fb8621bb6 net: remove addre... |
3483 |
err = sock_getsockopt(sock, level, optname, uoptval, uoptlen); |
ac5a488ef [NET]: Round out ... |
3484 |
else |
fb8621bb6 net: remove addre... |
3485 3486 |
err = sock->ops->getsockopt(sock, level, optname, uoptval, uoptlen); |
ac5a488ef [NET]: Round out ... |
3487 3488 3489 |
set_fs(oldfs); return err; } |
c6d409cfd From abbffa2aa9bd... |
3490 |
EXPORT_SYMBOL(kernel_getsockopt); |
ac5a488ef [NET]: Round out ... |
3491 |
|
8a3c245c0 net: add document... |
3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 |
/** * kernel_setsockopt - set a socket option (kernel space) * @sock: socket * @level: API level (SOL_SOCKET, ...) * @optname: option tag * @optval: option value * @optlen: option length * * Returns 0 or an error. */ |
ac5a488ef [NET]: Round out ... |
3502 |
int kernel_setsockopt(struct socket *sock, int level, int optname, |
b7058842c net: Make setsock... |
3503 |
char *optval, unsigned int optlen) |
ac5a488ef [NET]: Round out ... |
3504 3505 |
{ mm_segment_t oldfs = get_fs(); |
fb8621bb6 net: remove addre... |
3506 |
char __user *uoptval; |
ac5a488ef [NET]: Round out ... |
3507 |
int err; |
fb8621bb6 net: remove addre... |
3508 |
uoptval = (char __user __force *) optval; |
ac5a488ef [NET]: Round out ... |
3509 3510 |
set_fs(KERNEL_DS); if (level == SOL_SOCKET) |
fb8621bb6 net: remove addre... |
3511 |
err = sock_setsockopt(sock, level, optname, uoptval, optlen); |
ac5a488ef [NET]: Round out ... |
3512 |
else |
fb8621bb6 net: remove addre... |
3513 |
err = sock->ops->setsockopt(sock, level, optname, uoptval, |
ac5a488ef [NET]: Round out ... |
3514 3515 3516 3517 |
optlen); set_fs(oldfs); return err; } |
c6d409cfd From abbffa2aa9bd... |
3518 |
EXPORT_SYMBOL(kernel_setsockopt); |
ac5a488ef [NET]: Round out ... |
3519 |
|
8a3c245c0 net: add document... |
3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 |
/** * kernel_sendpage - send a &page through a socket (kernel space) * @sock: socket * @page: page * @offset: page offset * @size: total size in bytes * @flags: flags (MSG_DONTWAIT, ...) * * Returns the total amount sent in bytes or an error. */ |
ac5a488ef [NET]: Round out ... |
3530 3531 3532 3533 3534 3535 3536 3537 |
int kernel_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags) { if (sock->ops->sendpage) return sock->ops->sendpage(sock, page, offset, size, flags); return sock_no_sendpage(sock, page, offset, size, flags); } |
c6d409cfd From abbffa2aa9bd... |
3538 |
EXPORT_SYMBOL(kernel_sendpage); |
ac5a488ef [NET]: Round out ... |
3539 |
|
8a3c245c0 net: add document... |
3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 |
/** * kernel_sendpage_locked - send a &page through the locked sock (kernel space) * @sk: sock * @page: page * @offset: page offset * @size: total size in bytes * @flags: flags (MSG_DONTWAIT, ...) * * Returns the total amount sent in bytes or an error. * Caller must hold @sk. */ |
306b13eb3 proto_ops: Add lo... |
3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 |
int kernel_sendpage_locked(struct sock *sk, struct page *page, int offset, size_t size, int flags) { struct socket *sock = sk->sk_socket; if (sock->ops->sendpage_locked) return sock->ops->sendpage_locked(sk, page, offset, size, flags); return sock_no_sendpage_locked(sk, page, offset, size, flags); } EXPORT_SYMBOL(kernel_sendpage_locked); |
8a3c245c0 net: add document... |
3563 3564 3565 3566 3567 3568 3569 |
/** * kernel_shutdown - shut down part of a full-duplex connection (kernel space) * @sock: socket * @how: connection part * * Returns 0 or an error. */ |
91cf45f02 [NET]: Add the he... |
3570 3571 3572 3573 |
int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how) { return sock->ops->shutdown(sock, how); } |
91cf45f02 [NET]: Add the he... |
3574 |
EXPORT_SYMBOL(kernel_sock_shutdown); |
113c30759 New kernel functi... |
3575 |
|
8a3c245c0 net: add document... |
3576 3577 3578 3579 3580 3581 3582 3583 |
/** * kernel_sock_ip_overhead - returns the IP overhead imposed by a socket * @sk: socket * * This routine returns the IP overhead imposed by a socket i.e. * the length of the underlying IP header, depending on whether * this is an IPv4 or IPv6 socket and the length from IP options turned * on at the socket. Assumes that the caller has a lock on the socket. |
113c30759 New kernel functi... |
3584 |
*/ |
8a3c245c0 net: add document... |
3585 |
|
113c30759 New kernel functi... |
3586 3587 3588 3589 3590 |
u32 kernel_sock_ip_overhead(struct sock *sk) { struct inet_sock *inet; struct ip_options_rcu *opt; u32 overhead = 0; |
113c30759 New kernel functi... |
3591 3592 3593 3594 3595 3596 3597 |
#if IS_ENABLED(CONFIG_IPV6) struct ipv6_pinfo *np; struct ipv6_txoptions *optv6 = NULL; #endif /* IS_ENABLED(CONFIG_IPV6) */ if (!sk) return overhead; |
113c30759 New kernel functi... |
3598 3599 3600 3601 3602 |
switch (sk->sk_family) { case AF_INET: inet = inet_sk(sk); overhead += sizeof(struct iphdr); opt = rcu_dereference_protected(inet->inet_opt, |
614d79c09 socket: fix set n... |
3603 |
sock_owned_by_user(sk)); |
113c30759 New kernel functi... |
3604 3605 3606 3607 3608 3609 3610 3611 3612 |
if (opt) overhead += opt->opt.optlen; return overhead; #if IS_ENABLED(CONFIG_IPV6) case AF_INET6: np = inet6_sk(sk); overhead += sizeof(struct ipv6hdr); if (np) optv6 = rcu_dereference_protected(np->opt, |
614d79c09 socket: fix set n... |
3613 |
sock_owned_by_user(sk)); |
113c30759 New kernel functi... |
3614 3615 3616 3617 3618 3619 3620 3621 3622 |
if (optv6) overhead += (optv6->opt_flen + optv6->opt_nflen); return overhead; #endif /* IS_ENABLED(CONFIG_IPV6) */ default: /* Returns 0 overhead if the socket is not ipv4 or ipv6 */ return overhead; } } EXPORT_SYMBOL(kernel_sock_ip_overhead); |