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net/socket.c
91.9 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/termios.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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#ifdef CONFIG_PROC_FS static void sock_show_fdinfo(struct seq_file *m, struct file *f) { struct socket *sock = f->private_data; if (sock->ops->show_fdinfo) sock->ops->show_fdinfo(m, sock); } #else #define sock_show_fdinfo NULL #endif |
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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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.show_fdinfo = sock_show_fdinfo, |
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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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sizeof(struct socket_alloc), 0, (SLAB_HWCACHE_ALIGN | SLAB_RECLAIM_ACCOUNT | |
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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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stream_open(SOCK_INODE(sock), file); |
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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); |
ce4bb04ca Fix a leak in soc... |
410 411 |
if (unlikely(fd < 0)) { sock_release(sock); |
284076305 take descriptor h... |
412 |
return fd; |
ce4bb04ca Fix a leak in soc... |
413 |
} |
39d8c1b6f [NET]: Do not los... |
414 |
|
aab174f0d Merge branch 'for... |
415 |
newfile = sock_alloc_file(sock, flags, NULL); |
4546e44ca net: socket: drop... |
416 |
if (!IS_ERR(newfile)) { |
39d8c1b6f [NET]: Do not los... |
417 |
fd_install(fd, newfile); |
284076305 take descriptor h... |
418 419 |
return fd; } |
7cbe66b6b merge sock_alloc_... |
420 |
|
284076305 take descriptor h... |
421 422 |
put_unused_fd(fd); return PTR_ERR(newfile); |
1da177e4c Linux-2.6.12-rc2 |
423 |
} |
8a3c245c0 net: add document... |
424 425 426 427 428 429 430 |
/** * 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... |
431 |
struct socket *sock_from_file(struct file *file, int *err) |
6cb153cab [NET]: use fget_l... |
432 |
{ |
6cb153cab [NET]: use fget_l... |
433 434 |
if (file->f_op == &socket_file_ops) return file->private_data; /* set in sock_map_fd */ |
23bb80d21 [NET]: cleanup so... |
435 436 |
*err = -ENOTSOCK; return NULL; |
6cb153cab [NET]: use fget_l... |
437 |
} |
406a3c638 net: netprio_cgro... |
438 |
EXPORT_SYMBOL(sock_from_file); |
6cb153cab [NET]: use fget_l... |
439 |
|
1da177e4c Linux-2.6.12-rc2 |
440 |
/** |
c6d409cfd From abbffa2aa9bd... |
441 |
* sockfd_lookup - Go from a file number to its socket slot |
1da177e4c Linux-2.6.12-rc2 |
442 443 444 445 |
* @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 ... |
446 |
* to is returned. If an error occurs the err pointer is overwritten |
1da177e4c Linux-2.6.12-rc2 |
447 448 449 450 451 452 453 454 455 |
* 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 |
456 |
struct socket *sock; |
89bddce58 [NET] socket: cod... |
457 458 |
file = fget(fd); if (!file) { |
1da177e4c Linux-2.6.12-rc2 |
459 460 461 |
*err = -EBADF; return NULL; } |
89bddce58 [NET] socket: cod... |
462 |
|
6cb153cab [NET]: use fget_l... |
463 464 |
sock = sock_from_file(file, err); if (!sock) |
1da177e4c Linux-2.6.12-rc2 |
465 |
fput(file); |
6cb153cab [NET]: use fget_l... |
466 467 |
return sock; } |
c6d409cfd From abbffa2aa9bd... |
468 |
EXPORT_SYMBOL(sockfd_lookup); |
1da177e4c Linux-2.6.12-rc2 |
469 |
|
6cb153cab [NET]: use fget_l... |
470 471 |
static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed) { |
00e188ef6 sockfd_lookup_lig... |
472 |
struct fd f = fdget(fd); |
6cb153cab [NET]: use fget_l... |
473 |
struct socket *sock; |
3672558c6 [NET]: sockfd_loo... |
474 |
*err = -EBADF; |
00e188ef6 sockfd_lookup_lig... |
475 476 477 |
if (f.file) { sock = sock_from_file(f.file, err); if (likely(sock)) { |
ce787a5a0 net: Set fput_nee... |
478 |
*fput_needed = f.flags & FDPUT_FPUT; |
6cb153cab [NET]: use fget_l... |
479 |
return sock; |
00e188ef6 sockfd_lookup_lig... |
480 481 |
} fdput(f); |
1da177e4c Linux-2.6.12-rc2 |
482 |
} |
6cb153cab [NET]: use fget_l... |
483 |
return NULL; |
1da177e4c Linux-2.6.12-rc2 |
484 |
} |
600e17792 net: Providing pr... |
485 486 487 488 489 |
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... |
490 |
len = security_inode_listsecurity(d_inode(dentry), buffer, size); |
600e17792 net: Providing pr... |
491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 |
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... |
511 |
static int sockfs_setattr(struct dentry *dentry, struct iattr *iattr) |
86741ec25 net: core: Add a ... |
512 513 |
{ int err = simple_setattr(dentry, iattr); |
e1a3a60a2 net: socket: don'... |
514 |
if (!err && (iattr->ia_valid & ATTR_UID)) { |
86741ec25 net: core: Add a ... |
515 |
struct socket *sock = SOCKET_I(d_inode(dentry)); |
6d8c50dcb socket: close rac... |
516 517 518 519 |
if (sock->sk) sock->sk->sk_uid = iattr->ia_uid; else err = -ENOENT; |
86741ec25 net: core: Add a ... |
520 521 522 523 |
} return err; } |
600e17792 net: Providing pr... |
524 |
static const struct inode_operations sockfs_inode_ops = { |
600e17792 net: Providing pr... |
525 |
.listxattr = sockfs_listxattr, |
86741ec25 net: core: Add a ... |
526 |
.setattr = sockfs_setattr, |
600e17792 net: Providing pr... |
527 |
}; |
1da177e4c Linux-2.6.12-rc2 |
528 |
/** |
8a3c245c0 net: add document... |
529 |
* sock_alloc - allocate a socket |
89bddce58 [NET] socket: cod... |
530 |
* |
1da177e4c Linux-2.6.12-rc2 |
531 532 |
* 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... |
533 |
* NULL is returned. This functions uses GFP_KERNEL internally. |
1da177e4c Linux-2.6.12-rc2 |
534 |
*/ |
f4a00aacd net: Make sock_al... |
535 |
struct socket *sock_alloc(void) |
1da177e4c Linux-2.6.12-rc2 |
536 |
{ |
89bddce58 [NET] socket: cod... |
537 538 |
struct inode *inode; struct socket *sock; |
1da177e4c Linux-2.6.12-rc2 |
539 |
|
a209dfc7b vfs: dont chain p... |
540 |
inode = new_inode_pseudo(sock_mnt->mnt_sb); |
1da177e4c Linux-2.6.12-rc2 |
541 542 543 544 |
if (!inode) return NULL; sock = SOCKET_I(inode); |
85fe4025c fs: do not assign... |
545 |
inode->i_ino = get_next_ino(); |
89bddce58 [NET] socket: cod... |
546 |
inode->i_mode = S_IFSOCK | S_IRWXUGO; |
8192b0c48 CRED: Wrap task c... |
547 548 |
inode->i_uid = current_fsuid(); inode->i_gid = current_fsgid(); |
600e17792 net: Providing pr... |
549 |
inode->i_op = &sockfs_inode_ops; |
1da177e4c Linux-2.6.12-rc2 |
550 |
|
1da177e4c Linux-2.6.12-rc2 |
551 552 |
return sock; } |
f4a00aacd net: Make sock_al... |
553 |
EXPORT_SYMBOL(sock_alloc); |
1da177e4c Linux-2.6.12-rc2 |
554 |
|
6d8c50dcb socket: close rac... |
555 |
static void __sock_release(struct socket *sock, struct inode *inode) |
1da177e4c Linux-2.6.12-rc2 |
556 557 558 |
{ if (sock->ops) { struct module *owner = sock->ops->owner; |
6d8c50dcb socket: close rac... |
559 560 |
if (inode) inode_lock(inode); |
1da177e4c Linux-2.6.12-rc2 |
561 |
sock->ops->release(sock); |
ff7b11aa4 net: socket: set ... |
562 |
sock->sk = NULL; |
6d8c50dcb socket: close rac... |
563 564 |
if (inode) inode_unlock(inode); |
1da177e4c Linux-2.6.12-rc2 |
565 566 567 |
sock->ops = NULL; module_put(owner); } |
333f7909a coallocate socket... |
568 |
if (sock->wq.fasync_list) |
3410f22ea socket: replace s... |
569 570 |
pr_err("%s: fasync list not empty! ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
571 |
|
1da177e4c Linux-2.6.12-rc2 |
572 573 574 575 |
if (!sock->file) { iput(SOCK_INODE(sock)); return; } |
89bddce58 [NET] socket: cod... |
576 |
sock->file = NULL; |
1da177e4c Linux-2.6.12-rc2 |
577 |
} |
6d8c50dcb socket: close rac... |
578 |
|
9a8ad9ac8 net: socket: Move... |
579 580 581 582 583 584 585 586 |
/** * sock_release - close a socket * @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 * an inode not a file. */ |
6d8c50dcb socket: close rac... |
587 588 589 590 |
void sock_release(struct socket *sock) { __sock_release(sock, NULL); } |
c6d409cfd From abbffa2aa9bd... |
591 |
EXPORT_SYMBOL(sock_release); |
1da177e4c Linux-2.6.12-rc2 |
592 |
|
c14ac9451 sock: enable time... |
593 |
void __sock_tx_timestamp(__u16 tsflags, __u8 *tx_flags) |
20d494735 net: socket infra... |
594 |
{ |
140c55d4b net-timestamp: so... |
595 |
u8 flags = *tx_flags; |
c14ac9451 sock: enable time... |
596 |
if (tsflags & SOF_TIMESTAMPING_TX_HARDWARE) |
140c55d4b net-timestamp: so... |
597 |
flags |= SKBTX_HW_TSTAMP; |
c14ac9451 sock: enable time... |
598 |
if (tsflags & SOF_TIMESTAMPING_TX_SOFTWARE) |
140c55d4b net-timestamp: so... |
599 |
flags |= SKBTX_SW_TSTAMP; |
c14ac9451 sock: enable time... |
600 |
if (tsflags & SOF_TIMESTAMPING_TX_SCHED) |
140c55d4b net-timestamp: so... |
601 |
flags |= SKBTX_SCHED_TSTAMP; |
140c55d4b net-timestamp: so... |
602 |
*tx_flags = flags; |
20d494735 net: socket infra... |
603 |
} |
67cc0d407 net-timestamp: op... |
604 |
EXPORT_SYMBOL(__sock_tx_timestamp); |
20d494735 net: socket infra... |
605 |
|
8c3c447b3 net: use indirect... |
606 607 |
INDIRECT_CALLABLE_DECLARE(int inet_sendmsg(struct socket *, struct msghdr *, size_t)); |
a648a592d net: adjust socke... |
608 609 |
INDIRECT_CALLABLE_DECLARE(int inet6_sendmsg(struct socket *, struct msghdr *, size_t)); |
d8725c86a get rid of the si... |
610 |
static inline int sock_sendmsg_nosec(struct socket *sock, struct msghdr *msg) |
1da177e4c Linux-2.6.12-rc2 |
611 |
{ |
a648a592d net: adjust socke... |
612 613 614 |
int ret = INDIRECT_CALL_INET(sock->ops->sendmsg, inet6_sendmsg, inet_sendmsg, sock, msg, msg_data_left(msg)); |
d8725c86a get rid of the si... |
615 616 |
BUG_ON(ret == -EIOCBQUEUED); return ret; |
1da177e4c Linux-2.6.12-rc2 |
617 |
} |
85806af0c net: fix kernel-d... |
618 619 620 621 622 623 624 625 |
/** * 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... |
626 |
int sock_sendmsg(struct socket *sock, struct msghdr *msg) |
228e548e6 net: Add sendmmsg... |
627 |
{ |
d8725c86a get rid of the si... |
628 |
int err = security_socket_sendmsg(sock, msg, |
01e97e651 new helper: msg_d... |
629 |
msg_data_left(msg)); |
228e548e6 net: Add sendmmsg... |
630 |
|
d8725c86a get rid of the si... |
631 |
return err ?: sock_sendmsg_nosec(sock, msg); |
0cf00c6f3 net/socket.c : in... |
632 |
} |
c6d409cfd From abbffa2aa9bd... |
633 |
EXPORT_SYMBOL(sock_sendmsg); |
1da177e4c Linux-2.6.12-rc2 |
634 |
|
8a3c245c0 net: add document... |
635 636 637 638 639 640 641 642 643 644 645 |
/** * 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 |
646 647 648 |
int kernel_sendmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size) { |
aa563d7bc iov_iter: Separat... |
649 |
iov_iter_kvec(&msg->msg_iter, WRITE, vec, num, size); |
d8725c86a get rid of the si... |
650 |
return sock_sendmsg(sock, msg); |
1da177e4c Linux-2.6.12-rc2 |
651 |
} |
c6d409cfd From abbffa2aa9bd... |
652 |
EXPORT_SYMBOL(kernel_sendmsg); |
1da177e4c Linux-2.6.12-rc2 |
653 |
|
8a3c245c0 net: add document... |
654 655 656 657 658 659 660 661 662 663 664 665 |
/** * 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... |
666 667 668 669 670 671 |
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... |
672 |
return sock_no_sendmsg_locked(sk, msg, size); |
306b13eb3 proto_ops: Add lo... |
673 |
|
aa563d7bc iov_iter: Separat... |
674 |
iov_iter_kvec(&msg->msg_iter, WRITE, vec, num, size); |
306b13eb3 proto_ops: Add lo... |
675 676 677 678 |
return sock->ops->sendmsg_locked(sk, msg, msg_data_left(msg)); } EXPORT_SYMBOL(kernel_sendmsg_locked); |
8605330aa tcp: fix SCM_TIME... |
679 680 681 682 683 684 685 686 687 |
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... |
688 689 690 691 692 |
/* 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... |
693 |
* option SO_TIMESTAMP_OLD(NS) is enabled on the socket, even when the skb has a |
b50a5c70f net: allow simult... |
694 695 696 697 698 699 |
* 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... |
700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 |
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_... |
720 721 722 723 724 725 |
/* * 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... |
726 |
int need_software_tstamp = sock_flag(sk, SOCK_RCVTSTAMP); |
887feae36 socket: Add SO_TI... |
727 |
int new_tstamp = sock_flag(sk, SOCK_TSTAMP_NEW); |
9718475e6 socket: Add SO_TI... |
728 |
struct scm_timestamping_internal tss; |
b50a5c70f net: allow simult... |
729 |
int empty = 1, false_tstamp = 0; |
20d494735 net: socket infra... |
730 731 732 733 734 |
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... |
735 |
if (need_software_tstamp && skb->tstamp == 0) { |
20d494735 net: socket infra... |
736 |
__net_timestamp(skb); |
b50a5c70f net: allow simult... |
737 738 |
false_tstamp = 1; } |
20d494735 net: socket infra... |
739 740 741 |
if (need_software_tstamp) { if (!sock_flag(sk, SOCK_RCVTSTAMPNS)) { |
887feae36 socket: Add SO_TI... |
742 743 744 745 746 747 748 749 750 751 752 753 754 |
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... |
755 |
} else { |
887feae36 socket: Add SO_TI... |
756 757 758 759 760 761 762 |
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 { |
df1b4ba9d y2038: socket: us... |
763 |
struct __kernel_old_timespec ts; |
887feae36 socket: Add SO_TI... |
764 765 766 767 768 |
skb_get_timestampns(skb, &ts); put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMPNS_OLD, sizeof(ts), &ts); } |
20d494735 net: socket infra... |
769 770 |
} } |
f24b9be59 net-timestamp: ex... |
771 |
memset(&tss, 0, sizeof(tss)); |
c199105d1 net-timestamp: on... |
772 |
if ((sk->sk_tsflags & SOF_TIMESTAMPING_SOFTWARE) && |
9718475e6 socket: Add SO_TI... |
773 |
ktime_to_timespec64_cond(skb->tstamp, tss.ts + 0)) |
20d494735 net: socket infra... |
774 |
empty = 0; |
4d276eb6a net: remove depre... |
775 |
if (shhwtstamps && |
b9f40e21e net-timestamp: mo... |
776 |
(sk->sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE) && |
b50a5c70f net: allow simult... |
777 |
!skb_is_swtx_tstamp(skb, false_tstamp) && |
9718475e6 socket: Add SO_TI... |
778 |
ktime_to_timespec64_cond(shhwtstamps->hwtstamp, tss.ts + 2)) { |
4d276eb6a net: remove depre... |
779 |
empty = 0; |
aad9c8c47 net: add new cont... |
780 781 782 783 |
if ((sk->sk_tsflags & SOF_TIMESTAMPING_OPT_PKTINFO) && !skb_is_err_queue(skb)) put_ts_pktinfo(msg, skb); } |
1c885808e tcp: SOF_TIMESTAM... |
784 |
if (!empty) { |
9718475e6 socket: Add SO_TI... |
785 786 787 788 |
if (sock_flag(sk, SOCK_TSTAMP_NEW)) put_cmsg_scm_timestamping64(msg, &tss); else put_cmsg_scm_timestamping(msg, &tss); |
1c885808e tcp: SOF_TIMESTAM... |
789 |
|
8605330aa tcp: fix SCM_TIME... |
790 |
if (skb_is_err_queue(skb) && skb->len && |
4ef1b2869 tcp: mark skbs wi... |
791 |
SKB_EXT_ERR(skb)->opt_stats) |
1c885808e tcp: SOF_TIMESTAM... |
792 793 794 |
put_cmsg(msg, SOL_SOCKET, SCM_TIMESTAMPING_OPT_STATS, skb->len, skb->data); } |
92f37fd2e [NET]: Adding SO_... |
795 |
} |
7c81fd8bf [SOCKET]: Export ... |
796 |
EXPORT_SYMBOL_GPL(__sock_recv_timestamp); |
6e3e939f3 net: add wireless... |
797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 |
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 ... |
812 813 |
static inline void sock_recv_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb) |
3b885787e net: Generalize s... |
814 |
{ |
744d5a3e9 net: move skb->dr... |
815 |
if (sock_flag(sk, SOCK_RXQ_OVFL) && skb && SOCK_SKB_CB(skb)->dropcount) |
3b885787e net: Generalize s... |
816 |
put_cmsg(msg, SOL_SOCKET, SO_RXQ_OVFL, |
744d5a3e9 net: move skb->dr... |
817 |
sizeof(__u32), &SOCK_SKB_CB(skb)->dropcount); |
3b885787e net: Generalize s... |
818 |
} |
767dd0336 net: speedup sock... |
819 |
void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, |
3b885787e net: Generalize s... |
820 821 822 823 824 |
struct sk_buff *skb) { sock_recv_timestamp(msg, sk, skb); sock_recv_drops(msg, sk, skb); } |
767dd0336 net: speedup sock... |
825 |
EXPORT_SYMBOL_GPL(__sock_recv_ts_and_drops); |
3b885787e net: Generalize s... |
826 |
|
8c3c447b3 net: use indirect... |
827 |
INDIRECT_CALLABLE_DECLARE(int inet_recvmsg(struct socket *, struct msghdr *, |
a648a592d net: adjust socke... |
828 829 830 |
size_t, int)); INDIRECT_CALLABLE_DECLARE(int inet6_recvmsg(struct socket *, struct msghdr *, size_t, int)); |
1b7841404 net: Remove iocb ... |
831 |
static inline int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg, |
2da62906b [net] drop 'size'... |
832 |
int flags) |
1da177e4c Linux-2.6.12-rc2 |
833 |
{ |
a648a592d net: adjust socke... |
834 835 836 |
return INDIRECT_CALL_INET(sock->ops->recvmsg, inet6_recvmsg, inet_recvmsg, sock, msg, msg_data_left(msg), flags); |
1da177e4c Linux-2.6.12-rc2 |
837 |
} |
85806af0c net: fix kernel-d... |
838 839 840 841 842 843 844 845 846 |
/** * 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'... |
847 |
int sock_recvmsg(struct socket *sock, struct msghdr *msg, int flags) |
a2e272554 net: Introduce re... |
848 |
{ |
2da62906b [net] drop 'size'... |
849 |
int err = security_socket_recvmsg(sock, msg, msg_data_left(msg), flags); |
a2e272554 net: Introduce re... |
850 |
|
2da62906b [net] drop 'size'... |
851 |
return err ?: sock_recvmsg_nosec(sock, msg, flags); |
1da177e4c Linux-2.6.12-rc2 |
852 |
} |
c6d409cfd From abbffa2aa9bd... |
853 |
EXPORT_SYMBOL(sock_recvmsg); |
1da177e4c Linux-2.6.12-rc2 |
854 |
|
c1249c0aa net: Document the... |
855 |
/** |
8a3c245c0 net: add document... |
856 857 858 859 860 861 862 |
* 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... |
863 |
* |
8a3c245c0 net: add document... |
864 865 866 |
* 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... |
867 |
* |
8a3c245c0 net: add document... |
868 |
* The returned value is the total number of bytes received, or an error. |
c1249c0aa net: Document the... |
869 |
*/ |
8a3c245c0 net: add document... |
870 |
|
89bddce58 [NET] socket: cod... |
871 872 |
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 |
873 |
{ |
1f466e1f1 net: cleanly hand... |
874 |
msg->msg_control_is_user = false; |
aa563d7bc iov_iter: Separat... |
875 |
iov_iter_kvec(&msg->msg_iter, READ, vec, num, size); |
1f466e1f1 net: cleanly hand... |
876 |
return sock_recvmsg(sock, msg, flags); |
1da177e4c Linux-2.6.12-rc2 |
877 |
} |
c6d409cfd From abbffa2aa9bd... |
878 |
EXPORT_SYMBOL(kernel_recvmsg); |
1da177e4c Linux-2.6.12-rc2 |
879 |
|
ce1d4d3e8 [NET]: restructur... |
880 881 |
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 |
882 |
{ |
1da177e4c Linux-2.6.12-rc2 |
883 884 |
struct socket *sock; int flags; |
ce1d4d3e8 [NET]: restructur... |
885 |
sock = file->private_data; |
35f9c09fe tcp: tcp_sendpage... |
886 887 888 |
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... |
889 |
|
e69495838 Make sock_sendpag... |
890 |
return kernel_sendpage(sock, page, offset, size, flags); |
ce1d4d3e8 [NET]: restructur... |
891 |
} |
1da177e4c Linux-2.6.12-rc2 |
892 |
|
9c55e01c0 [TCP]: Splice rec... |
893 |
static ssize_t sock_splice_read(struct file *file, loff_t *ppos, |
c6d409cfd From abbffa2aa9bd... |
894 |
struct pipe_inode_info *pipe, size_t len, |
9c55e01c0 [TCP]: Splice rec... |
895 896 897 |
unsigned int flags) { struct socket *sock = file->private_data; |
997b37da1 [NET]: Make sure ... |
898 |
if (unlikely(!sock->ops->splice_read)) |
95506588d socket: do a gene... |
899 |
return generic_file_splice_read(file, ppos, pipe, len, flags); |
997b37da1 [NET]: Make sure ... |
900 |
|
9c55e01c0 [TCP]: Splice rec... |
901 902 |
return sock->ops->splice_read(sock, ppos, pipe, len, flags); } |
8ae5e030f net: switch socke... |
903 |
static ssize_t sock_read_iter(struct kiocb *iocb, struct iov_iter *to) |
ce1d4d3e8 [NET]: restructur... |
904 |
{ |
6d6523302 net/socket.c: fol... |
905 906 |
struct file *file = iocb->ki_filp; struct socket *sock = file->private_data; |
0345f9313 net: socket: add ... |
907 908 |
struct msghdr msg = {.msg_iter = *to, .msg_iocb = iocb}; |
8ae5e030f net: switch socke... |
909 |
ssize_t res; |
ce1d4d3e8 [NET]: restructur... |
910 |
|
ebfcd8955 net: make socket ... |
911 |
if (file->f_flags & O_NONBLOCK || (iocb->ki_flags & IOCB_NOWAIT)) |
8ae5e030f net: switch socke... |
912 913 914 |
msg.msg_flags = MSG_DONTWAIT; if (iocb->ki_pos != 0) |
1da177e4c Linux-2.6.12-rc2 |
915 |
return -ESPIPE; |
027445c37 [PATCH] Vectorize... |
916 |
|
66ee59af6 fs: remove ki_nbytes |
917 |
if (!iov_iter_count(to)) /* Match SYS5 behaviour */ |
1da177e4c Linux-2.6.12-rc2 |
918 |
return 0; |
2da62906b [net] drop 'size'... |
919 |
res = sock_recvmsg(sock, &msg, msg.msg_flags); |
8ae5e030f net: switch socke... |
920 921 |
*to = msg.msg_iter; return res; |
1da177e4c Linux-2.6.12-rc2 |
922 |
} |
8ae5e030f net: switch socke... |
923 |
static ssize_t sock_write_iter(struct kiocb *iocb, struct iov_iter *from) |
ce1d4d3e8 [NET]: restructur... |
924 |
{ |
6d6523302 net/socket.c: fol... |
925 926 |
struct file *file = iocb->ki_filp; struct socket *sock = file->private_data; |
0345f9313 net: socket: add ... |
927 928 |
struct msghdr msg = {.msg_iter = *from, .msg_iocb = iocb}; |
8ae5e030f net: switch socke... |
929 |
ssize_t res; |
1da177e4c Linux-2.6.12-rc2 |
930 |
|
8ae5e030f net: switch socke... |
931 |
if (iocb->ki_pos != 0) |
ce1d4d3e8 [NET]: restructur... |
932 |
return -ESPIPE; |
027445c37 [PATCH] Vectorize... |
933 |
|
ebfcd8955 net: make socket ... |
934 |
if (file->f_flags & O_NONBLOCK || (iocb->ki_flags & IOCB_NOWAIT)) |
8ae5e030f net: switch socke... |
935 |
msg.msg_flags = MSG_DONTWAIT; |
6d6523302 net/socket.c: fol... |
936 937 |
if (sock->type == SOCK_SEQPACKET) msg.msg_flags |= MSG_EOR; |
d8725c86a get rid of the si... |
938 |
res = sock_sendmsg(sock, &msg); |
8ae5e030f net: switch socke... |
939 940 |
*from = msg.msg_iter; return res; |
1da177e4c Linux-2.6.12-rc2 |
941 |
} |
1da177e4c Linux-2.6.12-rc2 |
942 943 944 945 |
/* * Atomic setting of ioctl hooks to avoid race * with module unload. */ |
4a3e2f711 [NET] sem2mutex: ... |
946 |
static DEFINE_MUTEX(br_ioctl_mutex); |
c6d409cfd From abbffa2aa9bd... |
947 |
static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg); |
1da177e4c Linux-2.6.12-rc2 |
948 |
|
881d966b4 [NET]: Make the d... |
949 |
void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *)) |
1da177e4c Linux-2.6.12-rc2 |
950 |
{ |
4a3e2f711 [NET] sem2mutex: ... |
951 |
mutex_lock(&br_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
952 |
br_ioctl_hook = hook; |
4a3e2f711 [NET] sem2mutex: ... |
953 |
mutex_unlock(&br_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
954 955 |
} EXPORT_SYMBOL(brioctl_set); |
4a3e2f711 [NET] sem2mutex: ... |
956 |
static DEFINE_MUTEX(vlan_ioctl_mutex); |
881d966b4 [NET]: Make the d... |
957 |
static int (*vlan_ioctl_hook) (struct net *, void __user *arg); |
1da177e4c Linux-2.6.12-rc2 |
958 |
|
881d966b4 [NET]: Make the d... |
959 |
void vlan_ioctl_set(int (*hook) (struct net *, void __user *)) |
1da177e4c Linux-2.6.12-rc2 |
960 |
{ |
4a3e2f711 [NET] sem2mutex: ... |
961 |
mutex_lock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
962 |
vlan_ioctl_hook = hook; |
4a3e2f711 [NET] sem2mutex: ... |
963 |
mutex_unlock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
964 965 |
} EXPORT_SYMBOL(vlan_ioctl_set); |
4a3e2f711 [NET] sem2mutex: ... |
966 |
static DEFINE_MUTEX(dlci_ioctl_mutex); |
89bddce58 [NET] socket: cod... |
967 |
static int (*dlci_ioctl_hook) (unsigned int, void __user *); |
1da177e4c Linux-2.6.12-rc2 |
968 |
|
89bddce58 [NET] socket: cod... |
969 |
void dlci_ioctl_set(int (*hook) (unsigned int, void __user *)) |
1da177e4c Linux-2.6.12-rc2 |
970 |
{ |
4a3e2f711 [NET] sem2mutex: ... |
971 |
mutex_lock(&dlci_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
972 |
dlci_ioctl_hook = hook; |
4a3e2f711 [NET] sem2mutex: ... |
973 |
mutex_unlock(&dlci_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
974 975 |
} EXPORT_SYMBOL(dlci_ioctl_set); |
6b96018b2 compat: move sock... |
976 |
static long sock_do_ioctl(struct net *net, struct socket *sock, |
63ff03ab7 Revert "socket: f... |
977 |
unsigned int cmd, unsigned long arg) |
6b96018b2 compat: move sock... |
978 979 980 981 982 983 984 985 986 987 |
{ 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... |
988 989 |
if (err != -ENOIOCTLCMD) return err; |
6b96018b2 compat: move sock... |
990 |
|
36fd633ec net: separate SIO... |
991 992 993 994 995 996 997 998 999 |
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... |
1000 1001 1002 |
} else { struct ifreq ifr; bool need_copyout; |
63ff03ab7 Revert "socket: f... |
1003 |
if (copy_from_user(&ifr, argp, sizeof(struct ifreq))) |
44c02a2c3 dev_ioctl(): move... |
1004 1005 1006 |
return -EFAULT; err = dev_ioctl(net, cmd, &ifr, &need_copyout); if (!err && need_copyout) |
63ff03ab7 Revert "socket: f... |
1007 |
if (copy_to_user(argp, &ifr, sizeof(struct ifreq))) |
44c02a2c3 dev_ioctl(): move... |
1008 |
return -EFAULT; |
36fd633ec net: separate SIO... |
1009 |
} |
6b96018b2 compat: move sock... |
1010 1011 |
return err; } |
1da177e4c Linux-2.6.12-rc2 |
1012 1013 1014 1015 |
/* * 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... |
1016 1017 1018 1019 1020 1021 |
/** * get_net_ns - increment the refcount of the network namespace * @ns: common namespace (net) * * Returns the net's common namespace. */ |
d8d211a2a net: Make extern ... |
1022 |
struct ns_common *get_net_ns(struct ns_common *ns) |
c62cce2ca net: add an ioctl... |
1023 1024 1025 |
{ return &get_net(container_of(ns, struct net, ns))->ns; } |
d8d211a2a net: Make extern ... |
1026 |
EXPORT_SYMBOL_GPL(get_net_ns); |
c62cce2ca net: add an ioctl... |
1027 |
|
1da177e4c Linux-2.6.12-rc2 |
1028 1029 1030 |
static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) { struct socket *sock; |
881d966b4 [NET]: Make the d... |
1031 |
struct sock *sk; |
1da177e4c Linux-2.6.12-rc2 |
1032 1033 |
void __user *argp = (void __user *)arg; int pid, err; |
881d966b4 [NET]: Make the d... |
1034 |
struct net *net; |
1da177e4c Linux-2.6.12-rc2 |
1035 |
|
b69aee04f [NET]: Use file->... |
1036 |
sock = file->private_data; |
881d966b4 [NET]: Make the d... |
1037 |
sk = sock->sk; |
3b1e0a655 [NET] NETNS: Omit... |
1038 |
net = sock_net(sk); |
44c02a2c3 dev_ioctl(): move... |
1039 1040 1041 1042 1043 1044 1045 1046 1047 |
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 |
1048 |
} else |
3d23e349d wext: refactor |
1049 |
#ifdef CONFIG_WEXT_CORE |
1da177e4c Linux-2.6.12-rc2 |
1050 |
if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) { |
b1b0c2450 lift handling of ... |
1051 |
err = wext_handle_ioctl(net, cmd, argp); |
1da177e4c Linux-2.6.12-rc2 |
1052 |
} else |
3d23e349d wext: refactor |
1053 |
#endif |
89bddce58 [NET] socket: cod... |
1054 |
switch (cmd) { |
1da177e4c Linux-2.6.12-rc2 |
1055 1056 1057 1058 1059 |
case FIOSETOWN: case SIOCSPGRP: err = -EFAULT; if (get_user(pid, (int __user *)argp)) break; |
393cc3f51 fs/fcntl: f_setow... |
1060 |
err = f_setown(sock->file, pid, 1); |
1da177e4c Linux-2.6.12-rc2 |
1061 1062 1063 |
break; case FIOGETOWN: case SIOCGPGRP: |
609d7fa95 [PATCH] file: mod... |
1064 |
err = put_user(f_getown(sock->file), |
89bddce58 [NET] socket: cod... |
1065 |
(int __user *)argp); |
1da177e4c Linux-2.6.12-rc2 |
1066 1067 1068 1069 1070 1071 1072 1073 |
break; case SIOCGIFBR: case SIOCSIFBR: case SIOCBRADDBR: case SIOCBRDELBR: err = -ENOPKG; if (!br_ioctl_hook) request_module("bridge"); |
4a3e2f711 [NET] sem2mutex: ... |
1074 |
mutex_lock(&br_ioctl_mutex); |
89bddce58 [NET] socket: cod... |
1075 |
if (br_ioctl_hook) |
881d966b4 [NET]: Make the d... |
1076 |
err = br_ioctl_hook(net, cmd, argp); |
4a3e2f711 [NET] sem2mutex: ... |
1077 |
mutex_unlock(&br_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1078 1079 1080 1081 1082 1083 |
break; case SIOCGIFVLAN: case SIOCSIFVLAN: err = -ENOPKG; if (!vlan_ioctl_hook) request_module("8021q"); |
4a3e2f711 [NET] sem2mutex: ... |
1084 |
mutex_lock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1085 |
if (vlan_ioctl_hook) |
881d966b4 [NET]: Make the d... |
1086 |
err = vlan_ioctl_hook(net, argp); |
4a3e2f711 [NET] sem2mutex: ... |
1087 |
mutex_unlock(&vlan_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1088 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1089 1090 1091 1092 1093 |
case SIOCADDDLCI: case SIOCDELDLCI: err = -ENOPKG; if (!dlci_ioctl_hook) request_module("dlci"); |
7512cbf6e [DLCI]: Fix tiny ... |
1094 1095 |
mutex_lock(&dlci_ioctl_mutex); if (dlci_ioctl_hook) |
1da177e4c Linux-2.6.12-rc2 |
1096 |
err = dlci_ioctl_hook(cmd, argp); |
7512cbf6e [DLCI]: Fix tiny ... |
1097 |
mutex_unlock(&dlci_ioctl_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1098 |
break; |
c62cce2ca net: add an ioctl... |
1099 1100 1101 1102 1103 1104 1105 |
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... |
1106 1107 |
case SIOCGSTAMP_OLD: case SIOCGSTAMPNS_OLD: |
c7cbdbf29 net: rework SIOCG... |
1108 1109 1110 1111 1112 |
if (!sock->ops->gettstamp) { err = -ENOIOCTLCMD; break; } err = sock->ops->gettstamp(sock, argp, |
0768e1707 net: socket: impl... |
1113 1114 |
cmd == SIOCGSTAMP_OLD, !IS_ENABLED(CONFIG_64BIT)); |
60747828e net: socket: Fix ... |
1115 |
break; |
0768e1707 net: socket: impl... |
1116 1117 1118 1119 1120 1121 1122 1123 1124 |
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... |
1125 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1126 |
default: |
63ff03ab7 Revert "socket: f... |
1127 |
err = sock_do_ioctl(net, sock, cmd, arg); |
1da177e4c Linux-2.6.12-rc2 |
1128 |
break; |
89bddce58 [NET] socket: cod... |
1129 |
} |
1da177e4c Linux-2.6.12-rc2 |
1130 1131 |
return err; } |
8a3c245c0 net: add document... |
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 |
/** * 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 |
1144 1145 1146 1147 |
int sock_create_lite(int family, int type, int protocol, struct socket **res) { int err; struct socket *sock = NULL; |
89bddce58 [NET] socket: cod... |
1148 |
|
1da177e4c Linux-2.6.12-rc2 |
1149 1150 1151 1152 1153 1154 1155 1156 1157 |
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 |
1158 |
sock->type = type; |
7420ed23a [NetLabel]: SELin... |
1159 1160 1161 |
err = security_socket_post_create(sock, family, type, protocol, 1); if (err) goto out_release; |
1da177e4c Linux-2.6.12-rc2 |
1162 1163 1164 |
out: *res = sock; return err; |
7420ed23a [NetLabel]: SELin... |
1165 1166 1167 1168 |
out_release: sock_release(sock); sock = NULL; goto out; |
1da177e4c Linux-2.6.12-rc2 |
1169 |
} |
c6d409cfd From abbffa2aa9bd... |
1170 |
EXPORT_SYMBOL(sock_create_lite); |
1da177e4c Linux-2.6.12-rc2 |
1171 1172 |
/* No kernel lock held - perfect */ |
ade994f4f net: annotate ->p... |
1173 |
static __poll_t sock_poll(struct file *file, poll_table *wait) |
1da177e4c Linux-2.6.12-rc2 |
1174 |
{ |
3cafb3763 net: refactor soc... |
1175 |
struct socket *sock = file->private_data; |
a331de3bf net: remove sock_... |
1176 |
__poll_t events = poll_requested_events(wait), flag = 0; |
2d48d67fa net: poll/select ... |
1177 |
|
e88958e63 net: handle NULL ... |
1178 1179 |
if (!sock->ops->poll) return 0; |
f641f13b9 net: remove sock_... |
1180 |
|
a331de3bf net: remove sock_... |
1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 |
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 |
1191 |
} |
89bddce58 [NET] socket: cod... |
1192 |
static int sock_mmap(struct file *file, struct vm_area_struct *vma) |
1da177e4c Linux-2.6.12-rc2 |
1193 |
{ |
b69aee04f [NET]: Use file->... |
1194 |
struct socket *sock = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1195 1196 1197 |
return sock->ops->mmap(file, sock, vma); } |
20380731b [NET]: Fix sparse... |
1198 |
static int sock_close(struct inode *inode, struct file *filp) |
1da177e4c Linux-2.6.12-rc2 |
1199 |
{ |
6d8c50dcb socket: close rac... |
1200 |
__sock_release(SOCKET_I(inode), inode); |
1da177e4c Linux-2.6.12-rc2 |
1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 |
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... |
1212 |
* or under socket lock |
1da177e4c Linux-2.6.12-rc2 |
1213 1214 1215 1216 |
*/ static int sock_fasync(int fd, struct file *filp, int on) { |
989a29792 fasync: RCU and f... |
1217 1218 |
struct socket *sock = filp->private_data; struct sock *sk = sock->sk; |
333f7909a coallocate socket... |
1219 |
struct socket_wq *wq = &sock->wq; |
1da177e4c Linux-2.6.12-rc2 |
1220 |
|
989a29792 fasync: RCU and f... |
1221 |
if (sk == NULL) |
1da177e4c Linux-2.6.12-rc2 |
1222 |
return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1223 1224 |
lock_sock(sk); |
eaefd1105 net: add __rcu an... |
1225 |
fasync_helper(fd, filp, on, &wq->fasync_list); |
1da177e4c Linux-2.6.12-rc2 |
1226 |
|
eaefd1105 net: add __rcu an... |
1227 |
if (!wq->fasync_list) |
989a29792 fasync: RCU and f... |
1228 1229 |
sock_reset_flag(sk, SOCK_FASYNC); else |
bcdce7195 net: speedup sk_w... |
1230 |
sock_set_flag(sk, SOCK_FASYNC); |
1da177e4c Linux-2.6.12-rc2 |
1231 |
|
989a29792 fasync: RCU and f... |
1232 |
release_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1233 1234 |
return 0; } |
ceb5d58b2 net: fix sock_wak... |
1235 |
/* This function may be called only under rcu_lock */ |
1da177e4c Linux-2.6.12-rc2 |
1236 |
|
ceb5d58b2 net: fix sock_wak... |
1237 |
int sock_wake_async(struct socket_wq *wq, int how, int band) |
1da177e4c Linux-2.6.12-rc2 |
1238 |
{ |
ceb5d58b2 net: fix sock_wak... |
1239 |
if (!wq || !wq->fasync_list) |
1da177e4c Linux-2.6.12-rc2 |
1240 |
return -1; |
ceb5d58b2 net: fix sock_wak... |
1241 |
|
89bddce58 [NET] socket: cod... |
1242 |
switch (how) { |
8d8ad9d7c [NET]: Name magic... |
1243 |
case SOCK_WAKE_WAITD: |
ceb5d58b2 net: fix sock_wak... |
1244 |
if (test_bit(SOCKWQ_ASYNC_WAITDATA, &wq->flags)) |
1da177e4c Linux-2.6.12-rc2 |
1245 1246 |
break; goto call_kill; |
8d8ad9d7c [NET]: Name magic... |
1247 |
case SOCK_WAKE_SPACE: |
ceb5d58b2 net: fix sock_wak... |
1248 |
if (!test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags)) |
1da177e4c Linux-2.6.12-rc2 |
1249 |
break; |
7c7ab580d net: Convert to u... |
1250 |
fallthrough; |
8d8ad9d7c [NET]: Name magic... |
1251 |
case SOCK_WAKE_IO: |
89bddce58 [NET] socket: cod... |
1252 |
call_kill: |
438154823 net: sock_def_rea... |
1253 |
kill_fasync(&wq->fasync_list, SIGIO, band); |
1da177e4c Linux-2.6.12-rc2 |
1254 |
break; |
8d8ad9d7c [NET]: Name magic... |
1255 |
case SOCK_WAKE_URG: |
438154823 net: sock_def_rea... |
1256 |
kill_fasync(&wq->fasync_list, SIGURG, band); |
1da177e4c Linux-2.6.12-rc2 |
1257 |
} |
ceb5d58b2 net: fix sock_wak... |
1258 |
|
1da177e4c Linux-2.6.12-rc2 |
1259 1260 |
return 0; } |
c6d409cfd From abbffa2aa9bd... |
1261 |
EXPORT_SYMBOL(sock_wake_async); |
1da177e4c Linux-2.6.12-rc2 |
1262 |
|
8a3c245c0 net: add document... |
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 |
/** * __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... |
1277 |
int __sock_create(struct net *net, int family, int type, int protocol, |
89bddce58 [NET] socket: cod... |
1278 |
struct socket **res, int kern) |
1da177e4c Linux-2.6.12-rc2 |
1279 1280 1281 |
{ int err; struct socket *sock; |
55737fda0 [NET]: socket fam... |
1282 |
const struct net_proto_family *pf; |
1da177e4c Linux-2.6.12-rc2 |
1283 1284 |
/* |
89bddce58 [NET] socket: cod... |
1285 |
* Check protocol is in range |
1da177e4c Linux-2.6.12-rc2 |
1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 |
*/ 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 ... |
1298 1299 1300 |
pr_info_once("%s uses obsolete (PF_INET,SOCK_PACKET) ", current->comm); |
1da177e4c Linux-2.6.12-rc2 |
1301 1302 1303 1304 1305 1306 |
family = PF_PACKET; } err = security_socket_create(family, type, protocol, kern); if (err) return err; |
89bddce58 [NET] socket: cod... |
1307 |
|
55737fda0 [NET]: socket fam... |
1308 1309 1310 1311 1312 1313 1314 |
/* * 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_... |
1315 1316 |
net_warn_ratelimited("socket: no more sockets "); |
55737fda0 [NET]: socket fam... |
1317 1318 1319 1320 1321 |
return -ENFILE; /* Not exactly a match, but its the closest posix thing */ } sock->type = type; |
95a5afca4 net: Remove CONFI... |
1322 |
#ifdef CONFIG_MODULES |
89bddce58 [NET] socket: cod... |
1323 1324 1325 |
/* 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 |
1326 1327 1328 |
* requested real, full-featured networking support upon configuration. * Otherwise module support will break! */ |
190683a9d net: net_families... |
1329 |
if (rcu_access_pointer(net_families[family]) == NULL) |
89bddce58 [NET] socket: cod... |
1330 |
request_module("net-pf-%d", family); |
1da177e4c Linux-2.6.12-rc2 |
1331 |
#endif |
55737fda0 [NET]: socket fam... |
1332 1333 1334 1335 1336 |
rcu_read_lock(); pf = rcu_dereference(net_families[family]); err = -EAFNOSUPPORT; if (!pf) goto out_release; |
1da177e4c Linux-2.6.12-rc2 |
1337 1338 1339 1340 1341 |
/* * 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... |
1342 |
if (!try_module_get(pf->owner)) |
1da177e4c Linux-2.6.12-rc2 |
1343 |
goto out_release; |
55737fda0 [NET]: socket fam... |
1344 1345 |
/* Now protected by module ref count */ rcu_read_unlock(); |
3f378b684 net: pass kern to... |
1346 |
err = pf->create(net, sock, protocol, kern); |
55737fda0 [NET]: socket fam... |
1347 |
if (err < 0) |
1da177e4c Linux-2.6.12-rc2 |
1348 |
goto out_module_put; |
a79af59ef [NET]: Fix module... |
1349 |
|
1da177e4c Linux-2.6.12-rc2 |
1350 1351 1352 1353 |
/* * 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... |
1354 1355 |
if (!try_module_get(sock->ops->owner)) goto out_module_busy; |
1da177e4c Linux-2.6.12-rc2 |
1356 1357 1358 1359 |
/* * Now that we're done with the ->create function, the [loadable] * module can have its refcnt decremented */ |
55737fda0 [NET]: socket fam... |
1360 |
module_put(pf->owner); |
7420ed23a [NetLabel]: SELin... |
1361 1362 |
err = security_socket_post_create(sock, family, type, protocol, kern); if (err) |
3b1855255 [NET]: Fix unbala... |
1363 |
goto out_sock_release; |
55737fda0 [NET]: socket fam... |
1364 |
*res = sock; |
1da177e4c Linux-2.6.12-rc2 |
1365 |
|
55737fda0 [NET]: socket fam... |
1366 1367 1368 1369 |
return 0; out_module_busy: err = -EAFNOSUPPORT; |
1da177e4c Linux-2.6.12-rc2 |
1370 |
out_module_put: |
55737fda0 [NET]: socket fam... |
1371 1372 1373 |
sock->ops = NULL; module_put(pf->owner); out_sock_release: |
1da177e4c Linux-2.6.12-rc2 |
1374 |
sock_release(sock); |
55737fda0 [NET]: socket fam... |
1375 1376 1377 1378 1379 |
return err; out_release: rcu_read_unlock(); goto out_sock_release; |
1da177e4c Linux-2.6.12-rc2 |
1380 |
} |
721db93a5 net: Export __soc... |
1381 |
EXPORT_SYMBOL(__sock_create); |
1da177e4c Linux-2.6.12-rc2 |
1382 |
|
8a3c245c0 net: add document... |
1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 |
/** * 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 |
1393 1394 |
int sock_create(int family, int type, int protocol, struct socket **res) { |
1b8d7ae42 [NET]: Make socke... |
1395 |
return __sock_create(current->nsproxy->net_ns, family, type, protocol, res, 0); |
1da177e4c Linux-2.6.12-rc2 |
1396 |
} |
c6d409cfd From abbffa2aa9bd... |
1397 |
EXPORT_SYMBOL(sock_create); |
1da177e4c Linux-2.6.12-rc2 |
1398 |
|
8a3c245c0 net: add document... |
1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 |
/** * 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... |
1410 |
int sock_create_kern(struct net *net, int family, int type, int protocol, struct socket **res) |
1da177e4c Linux-2.6.12-rc2 |
1411 |
{ |
eeb1bd5c4 net: Add a struct... |
1412 |
return __sock_create(net, family, type, protocol, res, 1); |
1da177e4c Linux-2.6.12-rc2 |
1413 |
} |
c6d409cfd From abbffa2aa9bd... |
1414 |
EXPORT_SYMBOL(sock_create_kern); |
1da177e4c Linux-2.6.12-rc2 |
1415 |
|
9d6a15c3f net: socket: add ... |
1416 |
int __sys_socket(int family, int type, int protocol) |
1da177e4c Linux-2.6.12-rc2 |
1417 1418 1419 |
{ int retval; struct socket *sock; |
a677a039b flag parameters: ... |
1420 |
int flags; |
e38b36f32 flag parameters: ... |
1421 1422 1423 1424 1425 |
/* 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: ... |
1426 |
flags = type & ~SOCK_TYPE_MASK; |
77d272005 flag parameters: ... |
1427 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039b flag parameters: ... |
1428 1429 |
return -EINVAL; type &= SOCK_TYPE_MASK; |
1da177e4c Linux-2.6.12-rc2 |
1430 |
|
aaca0bdca flag parameters: ... |
1431 1432 |
if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
1da177e4c Linux-2.6.12-rc2 |
1433 1434 |
retval = sock_create(family, type, protocol, &sock); if (retval < 0) |
8e1611e23 make sock_alloc_f... |
1435 |
return retval; |
1da177e4c Linux-2.6.12-rc2 |
1436 |
|
8e1611e23 make sock_alloc_f... |
1437 |
return sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK)); |
1da177e4c Linux-2.6.12-rc2 |
1438 |
} |
9d6a15c3f net: socket: add ... |
1439 1440 1441 1442 |
SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol) { return __sys_socket(family, type, protocol); } |
1da177e4c Linux-2.6.12-rc2 |
1443 1444 1445 |
/* * Create a pair of connected sockets. */ |
6debc8d83 net: socket: add ... |
1446 |
int __sys_socketpair(int family, int type, int protocol, int __user *usockvec) |
1da177e4c Linux-2.6.12-rc2 |
1447 1448 1449 |
{ struct socket *sock1, *sock2; int fd1, fd2, err; |
db3495099 [PATCH] AUDIT_FD_... |
1450 |
struct file *newfile1, *newfile2; |
a677a039b flag parameters: ... |
1451 1452 1453 |
int flags; flags = type & ~SOCK_TYPE_MASK; |
77d272005 flag parameters: ... |
1454 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
a677a039b flag parameters: ... |
1455 1456 |
return -EINVAL; type &= SOCK_TYPE_MASK; |
1da177e4c Linux-2.6.12-rc2 |
1457 |
|
aaca0bdca flag parameters: ... |
1458 1459 |
if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
1da177e4c Linux-2.6.12-rc2 |
1460 |
/* |
016a266bd socketpair(): all... |
1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 |
* 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 |
1483 1484 1485 1486 1487 |
* Obtain the first socket and check if the underlying protocol * supports the socketpair call. */ err = sock_create(family, type, protocol, &sock1); |
016a266bd socketpair(): all... |
1488 |
if (unlikely(err < 0)) |
1da177e4c Linux-2.6.12-rc2 |
1489 1490 1491 |
goto out; err = sock_create(family, type, protocol, &sock2); |
016a266bd socketpair(): all... |
1492 1493 1494 |
if (unlikely(err < 0)) { sock_release(sock1); goto out; |
bf3c23d17 [NET]: Fix error ... |
1495 |
} |
d73aa2867 net: handle error... |
1496 |
|
d47cd9450 net: hook socketp... |
1497 1498 1499 1500 1501 1502 |
err = security_socket_socketpair(sock1, sock2); if (unlikely(err)) { sock_release(sock2); sock_release(sock1); goto out; } |
016a266bd socketpair(): all... |
1503 1504 1505 1506 1507 |
err = sock1->ops->socketpair(sock1, sock2); if (unlikely(err < 0)) { sock_release(sock2); sock_release(sock1); goto out; |
284076305 take descriptor h... |
1508 |
} |
aab174f0d Merge branch 'for... |
1509 |
newfile1 = sock_alloc_file(sock1, flags, NULL); |
b5ffe6344 net: Drop unlikel... |
1510 |
if (IS_ERR(newfile1)) { |
284076305 take descriptor h... |
1511 |
err = PTR_ERR(newfile1); |
016a266bd socketpair(): all... |
1512 1513 |
sock_release(sock2); goto out; |
284076305 take descriptor h... |
1514 |
} |
aab174f0d Merge branch 'for... |
1515 |
newfile2 = sock_alloc_file(sock2, flags, NULL); |
284076305 take descriptor h... |
1516 1517 |
if (IS_ERR(newfile2)) { err = PTR_ERR(newfile2); |
016a266bd socketpair(): all... |
1518 1519 |
fput(newfile1); goto out; |
db3495099 [PATCH] AUDIT_FD_... |
1520 |
} |
157cf649a sanitize audit_fd... |
1521 |
audit_fd_pair(fd1, fd2); |
d73aa2867 net: handle error... |
1522 |
|
db3495099 [PATCH] AUDIT_FD_... |
1523 1524 |
fd_install(fd1, newfile1); fd_install(fd2, newfile2); |
d73aa2867 net: handle error... |
1525 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
1526 |
|
016a266bd socketpair(): all... |
1527 |
out: |
d73aa2867 net: handle error... |
1528 |
put_unused_fd(fd2); |
d73aa2867 net: handle error... |
1529 |
put_unused_fd(fd1); |
1da177e4c Linux-2.6.12-rc2 |
1530 1531 |
return err; } |
6debc8d83 net: socket: add ... |
1532 1533 1534 1535 1536 |
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 |
1537 1538 1539 1540 1541 1542 1543 |
/* * 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 ... |
1544 |
int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen) |
1da177e4c Linux-2.6.12-rc2 |
1545 1546 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1547 |
struct sockaddr_storage address; |
6cb153cab [NET]: use fget_l... |
1548 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1549 |
|
89bddce58 [NET] socket: cod... |
1550 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
e71a4783a [NET] core: white... |
1551 |
if (sock) { |
43db362d3 net: get rid of s... |
1552 |
err = move_addr_to_kernel(umyaddr, addrlen, &address); |
068b88cc1 socket: Tighten n... |
1553 |
if (!err) { |
89bddce58 [NET] socket: cod... |
1554 |
err = security_socket_bind(sock, |
230b18392 net: Use standard... |
1555 |
(struct sockaddr *)&address, |
89bddce58 [NET] socket: cod... |
1556 |
addrlen); |
6cb153cab [NET]: use fget_l... |
1557 1558 |
if (!err) err = sock->ops->bind(sock, |
89bddce58 [NET] socket: cod... |
1559 |
(struct sockaddr *) |
230b18392 net: Use standard... |
1560 |
&address, addrlen); |
1da177e4c Linux-2.6.12-rc2 |
1561 |
} |
6cb153cab [NET]: use fget_l... |
1562 |
fput_light(sock->file, fput_needed); |
89bddce58 [NET] socket: cod... |
1563 |
} |
1da177e4c Linux-2.6.12-rc2 |
1564 1565 |
return err; } |
a87d35d87 net: socket: add ... |
1566 1567 1568 1569 |
SYSCALL_DEFINE3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen) { return __sys_bind(fd, umyaddr, addrlen); } |
1da177e4c Linux-2.6.12-rc2 |
1570 1571 1572 1573 1574 |
/* * 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 ... |
1575 |
int __sys_listen(int fd, int backlog) |
1da177e4c Linux-2.6.12-rc2 |
1576 1577 |
{ struct socket *sock; |
6cb153cab [NET]: use fget_l... |
1578 |
int err, fput_needed; |
b8e1f9b5c [NET] sysctl: mak... |
1579 |
int somaxconn; |
89bddce58 [NET] socket: cod... |
1580 1581 1582 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock) { |
8efa6e93c [NETNS]: Introduc... |
1583 |
somaxconn = sock_net(sock->sk)->core.sysctl_somaxconn; |
95c961747 net: cleanup unsi... |
1584 |
if ((unsigned int)backlog > somaxconn) |
b8e1f9b5c [NET] sysctl: mak... |
1585 |
backlog = somaxconn; |
1da177e4c Linux-2.6.12-rc2 |
1586 1587 |
err = security_socket_listen(sock, backlog); |
6cb153cab [NET]: use fget_l... |
1588 1589 |
if (!err) err = sock->ops->listen(sock, backlog); |
1da177e4c Linux-2.6.12-rc2 |
1590 |
|
6cb153cab [NET]: use fget_l... |
1591 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1592 1593 1594 |
} return err; } |
25e290eed net: socket: add ... |
1595 1596 1597 1598 |
SYSCALL_DEFINE2(listen, int, fd, int, backlog) { return __sys_listen(fd, backlog); } |
de2ea4b64 net: add __sys_ac... |
1599 1600 |
int __sys_accept4_file(struct file *file, unsigned file_flags, struct sockaddr __user *upeer_sockaddr, |
09952e3e7 io_uring: make su... |
1601 1602 |
int __user *upeer_addrlen, int flags, unsigned long nofile) |
1da177e4c Linux-2.6.12-rc2 |
1603 1604 |
{ struct socket *sock, *newsock; |
39d8c1b6f [NET]: Do not los... |
1605 |
struct file *newfile; |
de2ea4b64 net: add __sys_ac... |
1606 |
int err, len, newfd; |
230b18392 net: Use standard... |
1607 |
struct sockaddr_storage address; |
1da177e4c Linux-2.6.12-rc2 |
1608 |
|
77d272005 flag parameters: ... |
1609 |
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK)) |
aaca0bdca flag parameters: ... |
1610 1611 1612 1613 |
return -EINVAL; if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK)) flags = (flags & ~SOCK_NONBLOCK) | O_NONBLOCK; |
de2ea4b64 net: add __sys_ac... |
1614 |
sock = sock_from_file(file, &err); |
1da177e4c Linux-2.6.12-rc2 |
1615 1616 1617 1618 |
if (!sock) goto out; err = -ENFILE; |
c6d409cfd From abbffa2aa9bd... |
1619 1620 |
newsock = sock_alloc(); if (!newsock) |
de2ea4b64 net: add __sys_ac... |
1621 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1622 1623 1624 |
newsock->type = sock->type; newsock->ops = sock->ops; |
1da177e4c Linux-2.6.12-rc2 |
1625 1626 1627 1628 1629 |
/* * 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); |
09952e3e7 io_uring: make su... |
1630 |
newfd = __get_unused_fd_flags(flags, nofile); |
39d8c1b6f [NET]: Do not los... |
1631 1632 |
if (unlikely(newfd < 0)) { err = newfd; |
9a1875e60 [NET]: Fully fix ... |
1633 |
sock_release(newsock); |
de2ea4b64 net: add __sys_ac... |
1634 |
goto out; |
39d8c1b6f [NET]: Do not los... |
1635 |
} |
aab174f0d Merge branch 'for... |
1636 |
newfile = sock_alloc_file(newsock, flags, sock->sk->sk_prot_creator->name); |
b5ffe6344 net: Drop unlikel... |
1637 |
if (IS_ERR(newfile)) { |
284076305 take descriptor h... |
1638 1639 |
err = PTR_ERR(newfile); put_unused_fd(newfd); |
de2ea4b64 net: add __sys_ac... |
1640 |
goto out; |
284076305 take descriptor h... |
1641 |
} |
39d8c1b6f [NET]: Do not los... |
1642 |
|
a79af59ef [NET]: Fix module... |
1643 1644 |
err = security_socket_accept(sock, newsock); if (err) |
39d8c1b6f [NET]: Do not los... |
1645 |
goto out_fd; |
a79af59ef [NET]: Fix module... |
1646 |
|
de2ea4b64 net: add __sys_ac... |
1647 1648 |
err = sock->ops->accept(sock, newsock, sock->file->f_flags | file_flags, false); |
1da177e4c Linux-2.6.12-rc2 |
1649 |
if (err < 0) |
39d8c1b6f [NET]: Do not los... |
1650 |
goto out_fd; |
1da177e4c Linux-2.6.12-rc2 |
1651 1652 |
if (upeer_sockaddr) { |
9b2c45d47 net: make getname... |
1653 1654 1655 |
len = newsock->ops->getname(newsock, (struct sockaddr *)&address, 2); if (len < 0) { |
1da177e4c Linux-2.6.12-rc2 |
1656 |
err = -ECONNABORTED; |
39d8c1b6f [NET]: Do not los... |
1657 |
goto out_fd; |
1da177e4c Linux-2.6.12-rc2 |
1658 |
} |
43db362d3 net: get rid of s... |
1659 |
err = move_addr_to_user(&address, |
230b18392 net: Use standard... |
1660 |
len, upeer_sockaddr, upeer_addrlen); |
1da177e4c Linux-2.6.12-rc2 |
1661 |
if (err < 0) |
39d8c1b6f [NET]: Do not los... |
1662 |
goto out_fd; |
1da177e4c Linux-2.6.12-rc2 |
1663 1664 1665 |
} /* File flags are not inherited via accept() unlike another OSes. */ |
39d8c1b6f [NET]: Do not los... |
1666 1667 |
fd_install(newfd, newfile); err = newfd; |
1da177e4c Linux-2.6.12-rc2 |
1668 1669 |
out: return err; |
39d8c1b6f [NET]: Do not los... |
1670 |
out_fd: |
9606a2163 [NET]: Fix dentry... |
1671 |
fput(newfile); |
39d8c1b6f [NET]: Do not los... |
1672 |
put_unused_fd(newfd); |
de2ea4b64 net: add __sys_ac... |
1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 |
goto out; } /* * 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 * clean when we restructure accept also. */ int __sys_accept4(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen, int flags) { int ret = -EBADF; struct fd f; f = fdget(fd); if (f.file) { ret = __sys_accept4_file(f.file, 0, upeer_sockaddr, |
09952e3e7 io_uring: make su... |
1698 1699 |
upeer_addrlen, flags, rlimit(RLIMIT_NOFILE)); |
6b07edebe net: Use helper f... |
1700 |
fdput(f); |
de2ea4b64 net: add __sys_ac... |
1701 1702 1703 |
} return ret; |
1da177e4c Linux-2.6.12-rc2 |
1704 |
} |
4541e8056 net: socket: add ... |
1705 1706 1707 1708 1709 |
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... |
1710 1711 |
SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen) |
aaca0bdca flag parameters: ... |
1712 |
{ |
4541e8056 net: socket: add ... |
1713 |
return __sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0); |
aaca0bdca flag parameters: ... |
1714 |
} |
1da177e4c Linux-2.6.12-rc2 |
1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 |
/* * 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. */ |
f499a021e io_uring: ensure ... |
1726 |
int __sys_connect_file(struct file *file, struct sockaddr_storage *address, |
bd3ded314 net: add __sys_co... |
1727 |
int addrlen, int file_flags) |
1da177e4c Linux-2.6.12-rc2 |
1728 1729 |
{ struct socket *sock; |
bd3ded314 net: add __sys_co... |
1730 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
1731 |
|
bd3ded314 net: add __sys_co... |
1732 |
sock = sock_from_file(file, &err); |
1da177e4c Linux-2.6.12-rc2 |
1733 1734 |
if (!sock) goto out; |
1da177e4c Linux-2.6.12-rc2 |
1735 |
|
89bddce58 [NET] socket: cod... |
1736 |
err = |
f499a021e io_uring: ensure ... |
1737 |
security_socket_connect(sock, (struct sockaddr *)address, addrlen); |
1da177e4c Linux-2.6.12-rc2 |
1738 |
if (err) |
bd3ded314 net: add __sys_co... |
1739 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1740 |
|
f499a021e io_uring: ensure ... |
1741 |
err = sock->ops->connect(sock, (struct sockaddr *)address, addrlen, |
bd3ded314 net: add __sys_co... |
1742 |
sock->file->f_flags | file_flags); |
1da177e4c Linux-2.6.12-rc2 |
1743 1744 1745 |
out: return err; } |
bd3ded314 net: add __sys_co... |
1746 1747 1748 1749 1750 1751 1752 |
int __sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen) { int ret = -EBADF; struct fd f; f = fdget(fd); if (f.file) { |
f499a021e io_uring: ensure ... |
1753 1754 1755 1756 1757 |
struct sockaddr_storage address; ret = move_addr_to_kernel(uservaddr, addrlen, &address); if (!ret) ret = __sys_connect_file(f.file, &address, addrlen, 0); |
6b07edebe net: Use helper f... |
1758 |
fdput(f); |
bd3ded314 net: add __sys_co... |
1759 1760 1761 1762 |
} return ret; } |
1387c2c2f net: socket: add ... |
1763 1764 1765 1766 1767 |
SYSCALL_DEFINE3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen) { return __sys_connect(fd, uservaddr, addrlen); } |
1da177e4c Linux-2.6.12-rc2 |
1768 1769 1770 1771 |
/* * Get the local address ('name') of a socket object. Move the obtained * name to user space. */ |
8882a107b net: socket: add ... |
1772 1773 |
int __sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len) |
1da177e4c Linux-2.6.12-rc2 |
1774 1775 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1776 |
struct sockaddr_storage address; |
9b2c45d47 net: make getname... |
1777 |
int err, fput_needed; |
89bddce58 [NET] socket: cod... |
1778 |
|
6cb153cab [NET]: use fget_l... |
1779 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1780 1781 1782 1783 1784 1785 |
if (!sock) goto out; err = security_socket_getsockname(sock); if (err) goto out_put; |
9b2c45d47 net: make getname... |
1786 1787 |
err = sock->ops->getname(sock, (struct sockaddr *)&address, 0); if (err < 0) |
1da177e4c Linux-2.6.12-rc2 |
1788 |
goto out_put; |
9b2c45d47 net: make getname... |
1789 1790 |
/* "err" is actually length in this case */ err = move_addr_to_user(&address, err, usockaddr, usockaddr_len); |
1da177e4c Linux-2.6.12-rc2 |
1791 1792 |
out_put: |
6cb153cab [NET]: use fget_l... |
1793 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1794 1795 1796 |
out: return err; } |
8882a107b net: socket: add ... |
1797 1798 1799 1800 1801 |
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 |
1802 1803 1804 1805 |
/* * Get the remote address ('name') of a socket object. Move the obtained * name to user space. */ |
b21c8f838 net: socket: add ... |
1806 1807 |
int __sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len) |
1da177e4c Linux-2.6.12-rc2 |
1808 1809 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1810 |
struct sockaddr_storage address; |
9b2c45d47 net: make getname... |
1811 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1812 |
|
89bddce58 [NET] socket: cod... |
1813 1814 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
1da177e4c Linux-2.6.12-rc2 |
1815 1816 |
err = security_socket_getpeername(sock); if (err) { |
6cb153cab [NET]: use fget_l... |
1817 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1818 1819 |
return err; } |
9b2c45d47 net: make getname... |
1820 1821 1822 1823 |
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... |
1824 |
usockaddr_len); |
6cb153cab [NET]: use fget_l... |
1825 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1826 1827 1828 |
} return err; } |
b21c8f838 net: socket: add ... |
1829 1830 1831 1832 1833 |
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 |
1834 1835 1836 1837 1838 |
/* * 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 ... |
1839 1840 |
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 |
1841 1842 |
{ struct socket *sock; |
230b18392 net: Use standard... |
1843 |
struct sockaddr_storage address; |
1da177e4c Linux-2.6.12-rc2 |
1844 1845 1846 |
int err; struct msghdr msg; struct iovec iov; |
6cb153cab [NET]: use fget_l... |
1847 |
int fput_needed; |
6cb153cab [NET]: use fget_l... |
1848 |
|
602bd0e90 net: switch sendt... |
1849 1850 1851 |
err = import_single_range(WRITE, buff, len, &iov, &msg.msg_iter); if (unlikely(err)) return err; |
de0fa95c1 [NET]: Use sockfd... |
1852 1853 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) |
4387ff75f [NET]: Fix net/so... |
1854 |
goto out; |
6cb153cab [NET]: use fget_l... |
1855 |
|
89bddce58 [NET] socket: cod... |
1856 |
msg.msg_name = NULL; |
89bddce58 [NET] socket: cod... |
1857 1858 1859 |
msg.msg_control = NULL; msg.msg_controllen = 0; msg.msg_namelen = 0; |
6cb153cab [NET]: use fget_l... |
1860 |
if (addr) { |
43db362d3 net: get rid of s... |
1861 |
err = move_addr_to_kernel(addr, addr_len, &address); |
1da177e4c Linux-2.6.12-rc2 |
1862 1863 |
if (err < 0) goto out_put; |
230b18392 net: Use standard... |
1864 |
msg.msg_name = (struct sockaddr *)&address; |
89bddce58 [NET] socket: cod... |
1865 |
msg.msg_namelen = addr_len; |
1da177e4c Linux-2.6.12-rc2 |
1866 1867 1868 1869 |
} if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; msg.msg_flags = flags; |
d8725c86a get rid of the si... |
1870 |
err = sock_sendmsg(sock, &msg); |
1da177e4c Linux-2.6.12-rc2 |
1871 |
|
89bddce58 [NET] socket: cod... |
1872 |
out_put: |
de0fa95c1 [NET]: Use sockfd... |
1873 |
fput_light(sock->file, fput_needed); |
4387ff75f [NET]: Fix net/so... |
1874 |
out: |
1da177e4c Linux-2.6.12-rc2 |
1875 1876 |
return err; } |
211b634b7 net: socket: add ... |
1877 1878 1879 1880 1881 1882 |
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 |
1883 |
/* |
89bddce58 [NET] socket: cod... |
1884 |
* Send a datagram down a socket. |
1da177e4c Linux-2.6.12-rc2 |
1885 |
*/ |
3e0fa65f8 [CVE-2009-0029] S... |
1886 |
SYSCALL_DEFINE4(send, int, fd, void __user *, buff, size_t, len, |
95c961747 net: cleanup unsi... |
1887 |
unsigned int, flags) |
1da177e4c Linux-2.6.12-rc2 |
1888 |
{ |
211b634b7 net: socket: add ... |
1889 |
return __sys_sendto(fd, buff, len, flags, NULL, 0); |
1da177e4c Linux-2.6.12-rc2 |
1890 1891 1892 |
} /* |
89bddce58 [NET] socket: cod... |
1893 |
* Receive a frame from the socket and optionally record the address of the |
1da177e4c Linux-2.6.12-rc2 |
1894 1895 1896 |
* sender. We verify the buffers are writable and if needed move the * sender address from kernel to user space. */ |
7a09e1eb9 net: socket: add ... |
1897 1898 |
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 |
1899 1900 1901 1902 |
{ struct socket *sock; struct iovec iov; struct msghdr msg; |
230b18392 net: Use standard... |
1903 |
struct sockaddr_storage address; |
89bddce58 [NET] socket: cod... |
1904 |
int err, err2; |
6cb153cab [NET]: use fget_l... |
1905 |
int fput_needed; |
602bd0e90 net: switch sendt... |
1906 1907 1908 |
err = import_single_range(READ, ubuf, size, &iov, &msg.msg_iter); if (unlikely(err)) return err; |
de0fa95c1 [NET]: Use sockfd... |
1909 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
1910 |
if (!sock) |
de0fa95c1 [NET]: Use sockfd... |
1911 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1912 |
|
89bddce58 [NET] socket: cod... |
1913 1914 |
msg.msg_control = NULL; msg.msg_controllen = 0; |
f3d334260 net: rework recvm... |
1915 1916 1917 1918 |
/* 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... |
1919 |
msg.msg_iocb = NULL; |
9f138fa60 net: initialize m... |
1920 |
msg.msg_flags = 0; |
1da177e4c Linux-2.6.12-rc2 |
1921 1922 |
if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |
2da62906b [net] drop 'size'... |
1923 |
err = sock_recvmsg(sock, &msg, flags); |
1da177e4c Linux-2.6.12-rc2 |
1924 |
|
89bddce58 [NET] socket: cod... |
1925 |
if (err >= 0 && addr != NULL) { |
43db362d3 net: get rid of s... |
1926 |
err2 = move_addr_to_user(&address, |
230b18392 net: Use standard... |
1927 |
msg.msg_namelen, addr, addr_len); |
89bddce58 [NET] socket: cod... |
1928 1929 |
if (err2 < 0) err = err2; |
1da177e4c Linux-2.6.12-rc2 |
1930 |
} |
de0fa95c1 [NET]: Use sockfd... |
1931 1932 |
fput_light(sock->file, fput_needed); |
4387ff75f [NET]: Fix net/so... |
1933 |
out: |
1da177e4c Linux-2.6.12-rc2 |
1934 1935 |
return err; } |
7a09e1eb9 net: socket: add ... |
1936 1937 1938 1939 1940 1941 |
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 |
1942 |
/* |
89bddce58 [NET] socket: cod... |
1943 |
* Receive a datagram from a socket. |
1da177e4c Linux-2.6.12-rc2 |
1944 |
*/ |
b7c0ddf5f net: use SYSCALL_... |
1945 1946 |
SYSCALL_DEFINE4(recv, int, fd, void __user *, ubuf, size_t, size, unsigned int, flags) |
1da177e4c Linux-2.6.12-rc2 |
1947 |
{ |
7a09e1eb9 net: socket: add ... |
1948 |
return __sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1949 |
} |
83f0c10bc net: use mptcp se... |
1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 |
static bool sock_use_custom_sol_socket(const struct socket *sock) { const struct sock *sk = sock->sk; /* Use sock->ops->setsockopt() for MPTCP */ return IS_ENABLED(CONFIG_MPTCP) && sk->sk_protocol == IPPROTO_MPTCP && sk->sk_type == SOCK_STREAM && (sk->sk_family == AF_INET || sk->sk_family == AF_INET6); } |
1da177e4c Linux-2.6.12-rc2 |
1960 1961 1962 1963 |
/* * 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. */ |
a7b75c5a8 net: pass a sockp... |
1964 |
int __sys_setsockopt(int fd, int level, int optname, char __user *user_optval, |
55db9c0e8 net: remove compa... |
1965 |
int optlen) |
1da177e4c Linux-2.6.12-rc2 |
1966 |
{ |
519a8a6cf net: Revert "net:... |
1967 |
sockptr_t optval = USER_SOCKPTR(user_optval); |
0d01da6af bpf: implement ge... |
1968 |
char *kernel_optval = NULL; |
6cb153cab [NET]: use fget_l... |
1969 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
1970 1971 1972 1973 |
struct socket *sock; if (optlen < 0) return -EINVAL; |
89bddce58 [NET] socket: cod... |
1974 1975 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
4a3672993 net: streamline _... |
1976 1977 |
if (!sock) return err; |
1da177e4c Linux-2.6.12-rc2 |
1978 |
|
4a3672993 net: streamline _... |
1979 1980 1981 |
err = security_socket_setsockopt(sock, level, optname); if (err) goto out_put; |
0d01da6af bpf: implement ge... |
1982 |
|
55db9c0e8 net: remove compa... |
1983 1984 |
if (!in_compat_syscall()) err = BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock->sk, &level, &optname, |
a7b75c5a8 net: pass a sockp... |
1985 |
user_optval, &optlen, |
55db9c0e8 net: remove compa... |
1986 |
&kernel_optval); |
4a3672993 net: streamline _... |
1987 1988 1989 1990 1991 1992 |
if (err < 0) goto out_put; if (err > 0) { err = 0; goto out_put; } |
0d01da6af bpf: implement ge... |
1993 |
|
a7b75c5a8 net: pass a sockp... |
1994 1995 |
if (kernel_optval) optval = KERNEL_SOCKPTR(kernel_optval); |
4a3672993 net: streamline _... |
1996 |
if (level == SOL_SOCKET && !sock_use_custom_sol_socket(sock)) |
a7b75c5a8 net: pass a sockp... |
1997 |
err = sock_setsockopt(sock, level, optname, optval, optlen); |
a44d9e721 net: make ->{get,... |
1998 1999 |
else if (unlikely(!sock->ops->setsockopt)) err = -EOPNOTSUPP; |
4a3672993 net: streamline _... |
2000 2001 |
else err = sock->ops->setsockopt(sock, level, optname, optval, |
89bddce58 [NET] socket: cod... |
2002 |
optlen); |
a7b75c5a8 net: pass a sockp... |
2003 |
kfree(kernel_optval); |
4a3672993 net: streamline _... |
2004 2005 |
out_put: fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
2006 2007 |
return err; } |
cc36dca0d net: socket: add ... |
2008 2009 2010 2011 2012 |
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 |
2013 2014 2015 2016 |
/* * 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. */ |
55db9c0e8 net: remove compa... |
2017 2018 |
int __sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen) |
1da177e4c Linux-2.6.12-rc2 |
2019 |
{ |
6cb153cab [NET]: use fget_l... |
2020 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
2021 |
struct socket *sock; |
0d01da6af bpf: implement ge... |
2022 |
int max_optlen; |
1da177e4c Linux-2.6.12-rc2 |
2023 |
|
89bddce58 [NET] socket: cod... |
2024 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
d8a9b38f8 net: streamline _... |
2025 2026 2027 2028 2029 2030 |
if (!sock) return err; err = security_socket_getsockopt(sock, level, optname); if (err) goto out_put; |
1da177e4c Linux-2.6.12-rc2 |
2031 |
|
55db9c0e8 net: remove compa... |
2032 2033 |
if (!in_compat_syscall()) max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen); |
0d01da6af bpf: implement ge... |
2034 |
|
d8a9b38f8 net: streamline _... |
2035 2036 |
if (level == SOL_SOCKET) err = sock_getsockopt(sock, level, optname, optval, optlen); |
a44d9e721 net: make ->{get,... |
2037 2038 |
else if (unlikely(!sock->ops->getsockopt)) err = -EOPNOTSUPP; |
d8a9b38f8 net: streamline _... |
2039 2040 |
else err = sock->ops->getsockopt(sock, level, optname, optval, |
89bddce58 [NET] socket: cod... |
2041 |
optlen); |
0d01da6af bpf: implement ge... |
2042 |
|
55db9c0e8 net: remove compa... |
2043 2044 2045 2046 |
if (!in_compat_syscall()) err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname, optval, optlen, max_optlen, err); |
6cb153cab [NET]: use fget_l... |
2047 |
out_put: |
d8a9b38f8 net: streamline _... |
2048 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
2049 2050 |
return err; } |
13a2d70e2 net: socket: add ... |
2051 2052 2053 2054 2055 |
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 |
2056 2057 2058 |
/* * Shutdown a socket. */ |
005a1aeac net: socket: add ... |
2059 |
int __sys_shutdown(int fd, int how) |
1da177e4c Linux-2.6.12-rc2 |
2060 |
{ |
6cb153cab [NET]: use fget_l... |
2061 |
int err, fput_needed; |
1da177e4c Linux-2.6.12-rc2 |
2062 |
struct socket *sock; |
89bddce58 [NET] socket: cod... |
2063 2064 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); if (sock != NULL) { |
1da177e4c Linux-2.6.12-rc2 |
2065 |
err = security_socket_shutdown(sock, how); |
6cb153cab [NET]: use fget_l... |
2066 2067 2068 |
if (!err) err = sock->ops->shutdown(sock, how); fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
2069 2070 2071 |
} return err; } |
005a1aeac net: socket: add ... |
2072 2073 2074 2075 |
SYSCALL_DEFINE2(shutdown, int, fd, int, how) { return __sys_shutdown(fd, how); } |
89bddce58 [NET] socket: cod... |
2076 |
/* A couple of helpful macros for getting the address of the 32/64 bit |
1da177e4c Linux-2.6.12-rc2 |
2077 2078 2079 2080 2081 |
* 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... |
2082 2083 2084 2085 |
struct used_address { struct sockaddr_storage name; unsigned int name_len; }; |
0a384abfa net: abstract out... |
2086 2087 2088 2089 |
int __copy_msghdr_from_user(struct msghdr *kmsg, struct user_msghdr __user *umsg, struct sockaddr __user **save_addr, struct iovec __user **uiov, size_t *nsegs) |
1661bf364 net: heap overflo... |
2090 |
{ |
ffb07550c copy_msghdr_from_... |
2091 |
struct user_msghdr msg; |
08adb7dab fold verify_iovec... |
2092 |
ssize_t err; |
ffb07550c copy_msghdr_from_... |
2093 |
if (copy_from_user(&msg, umsg, sizeof(*umsg))) |
1661bf364 net: heap overflo... |
2094 |
return -EFAULT; |
dbb490b96 net: socket: erro... |
2095 |
|
1f466e1f1 net: cleanly hand... |
2096 2097 |
kmsg->msg_control_is_user = true; kmsg->msg_control_user = msg.msg_control; |
ffb07550c copy_msghdr_from_... |
2098 2099 2100 2101 2102 |
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... |
2103 |
kmsg->msg_namelen = 0; |
dbb490b96 net: socket: erro... |
2104 2105 |
if (kmsg->msg_namelen < 0) return -EINVAL; |
1661bf364 net: heap overflo... |
2106 |
if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) |
db31c55a6 net: clamp ->msg_... |
2107 |
kmsg->msg_namelen = sizeof(struct sockaddr_storage); |
08adb7dab fold verify_iovec... |
2108 2109 |
if (save_addr) |
ffb07550c copy_msghdr_from_... |
2110 |
*save_addr = msg.msg_name; |
08adb7dab fold verify_iovec... |
2111 |
|
ffb07550c copy_msghdr_from_... |
2112 |
if (msg.msg_name && kmsg->msg_namelen) { |
08adb7dab fold verify_iovec... |
2113 |
if (!save_addr) { |
864d96642 net/socket: fix t... |
2114 2115 |
err = move_addr_to_kernel(msg.msg_name, kmsg->msg_namelen, |
08adb7dab fold verify_iovec... |
2116 2117 2118 2119 2120 2121 2122 2123 |
kmsg->msg_name); if (err < 0) return err; } } else { kmsg->msg_name = NULL; kmsg->msg_namelen = 0; } |
ffb07550c copy_msghdr_from_... |
2124 |
if (msg.msg_iovlen > UIO_MAXIOV) |
08adb7dab fold verify_iovec... |
2125 |
return -EMSGSIZE; |
0345f9313 net: socket: add ... |
2126 |
kmsg->msg_iocb = NULL; |
0a384abfa net: abstract out... |
2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 |
*uiov = msg.msg_iov; *nsegs = msg.msg_iovlen; return 0; } static int copy_msghdr_from_user(struct msghdr *kmsg, struct user_msghdr __user *umsg, struct sockaddr __user **save_addr, struct iovec **iov) { struct user_msghdr msg; ssize_t err; err = __copy_msghdr_from_user(kmsg, umsg, save_addr, &msg.msg_iov, &msg.msg_iovlen); if (err) return err; |
0345f9313 net: socket: add ... |
2144 |
|
87e5e6dab uio: make import_... |
2145 |
err = import_iovec(save_addr ? READ : WRITE, |
ffb07550c copy_msghdr_from_... |
2146 |
msg.msg_iov, msg.msg_iovlen, |
da1842849 net: switch impor... |
2147 |
UIO_FASTIOV, iov, &kmsg->msg_iter); |
87e5e6dab uio: make import_... |
2148 |
return err < 0 ? err : 0; |
1661bf364 net: heap overflo... |
2149 |
} |
4257c8ca1 net: separate out... |
2150 2151 2152 |
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 |
2153 |
{ |
b9d717a7b [NET]: Make sure ... |
2154 |
unsigned char ctl[sizeof(struct cmsghdr) + 20] |
846cc1231 net: socket: pref... |
2155 |
__aligned(sizeof(__kernel_size_t)); |
89bddce58 [NET] socket: cod... |
2156 |
/* 20 is size of ipv6_pktinfo */ |
1da177e4c Linux-2.6.12-rc2 |
2157 |
unsigned char *ctl_buf = ctl; |
d8725c86a get rid of the si... |
2158 |
int ctl_len; |
08adb7dab fold verify_iovec... |
2159 |
ssize_t err; |
89bddce58 [NET] socket: cod... |
2160 |
|
1da177e4c Linux-2.6.12-rc2 |
2161 |
err = -ENOBUFS; |
228e548e6 net: Add sendmmsg... |
2162 |
if (msg_sys->msg_controllen > INT_MAX) |
4257c8ca1 net: separate out... |
2163 |
goto out; |
28a94d8fb net: Allow MSG_EO... |
2164 |
flags |= (msg_sys->msg_flags & allowed_msghdr_flags); |
228e548e6 net: Add sendmmsg... |
2165 |
ctl_len = msg_sys->msg_controllen; |
1da177e4c Linux-2.6.12-rc2 |
2166 |
if ((MSG_CMSG_COMPAT & flags) && ctl_len) { |
89bddce58 [NET] socket: cod... |
2167 |
err = |
228e548e6 net: Add sendmmsg... |
2168 |
cmsghdr_from_user_compat_to_kern(msg_sys, sock->sk, ctl, |
89bddce58 [NET] socket: cod... |
2169 |
sizeof(ctl)); |
1da177e4c Linux-2.6.12-rc2 |
2170 |
if (err) |
4257c8ca1 net: separate out... |
2171 |
goto out; |
228e548e6 net: Add sendmmsg... |
2172 2173 |
ctl_buf = msg_sys->msg_control; ctl_len = msg_sys->msg_controllen; |
1da177e4c Linux-2.6.12-rc2 |
2174 |
} else if (ctl_len) { |
ac4340fc3 net: Assert at bu... |
2175 2176 |
BUILD_BUG_ON(sizeof(struct cmsghdr) != CMSG_ALIGN(sizeof(struct cmsghdr))); |
89bddce58 [NET] socket: cod... |
2177 |
if (ctl_len > sizeof(ctl)) { |
1da177e4c Linux-2.6.12-rc2 |
2178 |
ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL); |
89bddce58 [NET] socket: cod... |
2179 |
if (ctl_buf == NULL) |
4257c8ca1 net: separate out... |
2180 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2181 2182 |
} err = -EFAULT; |
1f466e1f1 net: cleanly hand... |
2183 |
if (copy_from_user(ctl_buf, msg_sys->msg_control_user, ctl_len)) |
1da177e4c Linux-2.6.12-rc2 |
2184 |
goto out_freectl; |
228e548e6 net: Add sendmmsg... |
2185 |
msg_sys->msg_control = ctl_buf; |
1f466e1f1 net: cleanly hand... |
2186 |
msg_sys->msg_control_is_user = false; |
1da177e4c Linux-2.6.12-rc2 |
2187 |
} |
228e548e6 net: Add sendmmsg... |
2188 |
msg_sys->msg_flags = flags; |
1da177e4c Linux-2.6.12-rc2 |
2189 2190 |
if (sock->file->f_flags & O_NONBLOCK) |
228e548e6 net: Add sendmmsg... |
2191 |
msg_sys->msg_flags |= MSG_DONTWAIT; |
c71d8ebe7 net: Fix security... |
2192 2193 2194 2195 2196 2197 |
/* * 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:... |
2198 2199 2200 |
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... |
2201 |
used_address->name_len)) { |
d8725c86a get rid of the si... |
2202 |
err = sock_sendmsg_nosec(sock, msg_sys); |
c71d8ebe7 net: Fix security... |
2203 2204 |
goto out_freectl; } |
d8725c86a get rid of the si... |
2205 |
err = sock_sendmsg(sock, msg_sys); |
c71d8ebe7 net: Fix security... |
2206 2207 2208 2209 2210 2211 |
/* * 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:... |
2212 2213 2214 |
if (msg_sys->msg_name) memcpy(&used_address->name, msg_sys->msg_name, used_address->name_len); |
c71d8ebe7 net: Fix security... |
2215 |
} |
1da177e4c Linux-2.6.12-rc2 |
2216 2217 |
out_freectl: |
89bddce58 [NET] socket: cod... |
2218 |
if (ctl_buf != ctl) |
1da177e4c Linux-2.6.12-rc2 |
2219 |
sock_kfree_s(sock->sk, ctl_buf, ctl_len); |
4257c8ca1 net: separate out... |
2220 2221 2222 |
out: return err; } |
03b1230ca io_uring: ensure ... |
2223 2224 2225 |
int sendmsg_copy_msghdr(struct msghdr *msg, struct user_msghdr __user *umsg, unsigned flags, struct iovec **iov) |
4257c8ca1 net: separate out... |
2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 |
{ 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... |
2260 |
kfree(iov); |
228e548e6 net: Add sendmmsg... |
2261 2262 2263 2264 2265 2266 |
return err; } /* * BSD sendmsg interface */ |
03b1230ca io_uring: ensure ... |
2267 |
long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg, |
0fa03c624 io_uring: add sup... |
2268 2269 |
unsigned int flags) { |
d69e07793 net: disallow anc... |
2270 |
/* disallow ancillary data requests from this path */ |
03b1230ca io_uring: ensure ... |
2271 2272 |
if (msg->msg_control || msg->msg_controllen) return -EINVAL; |
d69e07793 net: disallow anc... |
2273 |
|
03b1230ca io_uring: ensure ... |
2274 |
return ____sys_sendmsg(sock, msg, flags, NULL, 0); |
0fa03c624 io_uring: add sup... |
2275 |
} |
228e548e6 net: Add sendmmsg... |
2276 |
|
e1834a329 net: socket: move... |
2277 2278 |
long __sys_sendmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat) |
228e548e6 net: Add sendmmsg... |
2279 2280 2281 |
{ int fput_needed, err; struct msghdr msg_sys; |
1be374a05 net: Block MSG_CM... |
2282 |
struct socket *sock; |
e1834a329 net: socket: move... |
2283 2284 |
if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) return -EINVAL; |
1be374a05 net: Block MSG_CM... |
2285 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
228e548e6 net: Add sendmmsg... |
2286 2287 |
if (!sock) goto out; |
28a94d8fb net: Allow MSG_EO... |
2288 |
err = ___sys_sendmsg(sock, msg, &msg_sys, flags, NULL, 0); |
228e548e6 net: Add sendmmsg... |
2289 |
|
6cb153cab [NET]: use fget_l... |
2290 |
fput_light(sock->file, fput_needed); |
89bddce58 [NET] socket: cod... |
2291 |
out: |
1da177e4c Linux-2.6.12-rc2 |
2292 2293 |
return err; } |
666547ff5 separate kernel- ... |
2294 |
SYSCALL_DEFINE3(sendmsg, int, fd, struct user_msghdr __user *, msg, unsigned int, flags) |
a7526eb5d net: Unbreak comp... |
2295 |
{ |
e1834a329 net: socket: move... |
2296 |
return __sys_sendmsg(fd, msg, flags, true); |
a7526eb5d net: Unbreak comp... |
2297 |
} |
228e548e6 net: Add sendmmsg... |
2298 2299 2300 2301 2302 |
/* * Linux sendmmsg interface */ int __sys_sendmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, |
e1834a329 net: socket: move... |
2303 |
unsigned int flags, bool forbid_cmsg_compat) |
228e548e6 net: Add sendmmsg... |
2304 2305 2306 2307 2308 2309 |
{ 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... |
2310 |
struct used_address used_address; |
f092276d8 net: Add MSG_BATC... |
2311 |
unsigned int oflags = flags; |
228e548e6 net: Add sendmmsg... |
2312 |
|
e1834a329 net: socket: move... |
2313 2314 |
if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) return -EINVAL; |
98382f419 net: Cap number o... |
2315 2316 |
if (vlen > UIO_MAXIOV) vlen = UIO_MAXIOV; |
228e548e6 net: Add sendmmsg... |
2317 2318 2319 2320 2321 2322 |
datagrams = 0; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) return err; |
c71d8ebe7 net: Fix security... |
2323 |
used_address.name_len = UINT_MAX; |
228e548e6 net: Add sendmmsg... |
2324 2325 |
entry = mmsg; compat_entry = (struct compat_mmsghdr __user *)mmsg; |
728ffb86f net: sendmmsg sho... |
2326 |
err = 0; |
f092276d8 net: Add MSG_BATC... |
2327 |
flags |= MSG_BATCH; |
228e548e6 net: Add sendmmsg... |
2328 2329 |
while (datagrams < vlen) { |
f092276d8 net: Add MSG_BATC... |
2330 2331 |
if (datagrams == vlen - 1) flags = oflags; |
228e548e6 net: Add sendmmsg... |
2332 |
if (MSG_CMSG_COMPAT & flags) { |
666547ff5 separate kernel- ... |
2333 |
err = ___sys_sendmsg(sock, (struct user_msghdr __user *)compat_entry, |
28a94d8fb net: Allow MSG_EO... |
2334 |
&msg_sys, flags, &used_address, MSG_EOR); |
228e548e6 net: Add sendmmsg... |
2335 2336 2337 2338 2339 |
if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { |
a7526eb5d net: Unbreak comp... |
2340 |
err = ___sys_sendmsg(sock, |
666547ff5 separate kernel- ... |
2341 |
(struct user_msghdr __user *)entry, |
28a94d8fb net: Allow MSG_EO... |
2342 |
&msg_sys, flags, &used_address, MSG_EOR); |
228e548e6 net: Add sendmmsg... |
2343 2344 2345 2346 2347 2348 2349 2350 2351 |
if (err < 0) break; err = put_user(err, &entry->msg_len); ++entry; } if (err) break; ++datagrams; |
3023898b7 sock: fix sendmms... |
2352 2353 |
if (msg_data_left(&msg_sys)) break; |
a78cb84c6 net: add scheduli... |
2354 |
cond_resched(); |
228e548e6 net: Add sendmmsg... |
2355 |
} |
228e548e6 net: Add sendmmsg... |
2356 |
fput_light(sock->file, fput_needed); |
728ffb86f net: sendmmsg sho... |
2357 2358 |
/* We only return an error if no datagrams were able to be sent */ if (datagrams != 0) |
228e548e6 net: Add sendmmsg... |
2359 |
return datagrams; |
228e548e6 net: Add sendmmsg... |
2360 2361 2362 2363 2364 2365 |
return err; } SYSCALL_DEFINE4(sendmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags) { |
e1834a329 net: socket: move... |
2366 |
return __sys_sendmmsg(fd, mmsg, vlen, flags, true); |
228e548e6 net: Add sendmmsg... |
2367 |
} |
03b1230ca io_uring: ensure ... |
2368 2369 2370 2371 |
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 |
2372 |
{ |
08adb7dab fold verify_iovec... |
2373 |
ssize_t err; |
1da177e4c Linux-2.6.12-rc2 |
2374 |
|
4257c8ca1 net: separate out... |
2375 2376 |
if (MSG_CMSG_COMPAT & flags) { struct compat_msghdr __user *msg_compat; |
1da177e4c Linux-2.6.12-rc2 |
2377 |
|
4257c8ca1 net: separate out... |
2378 2379 2380 2381 2382 |
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 |
2383 |
if (err < 0) |
da1842849 net: switch impor... |
2384 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
2385 |
|
4257c8ca1 net: separate out... |
2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 |
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... |
2403 2404 |
cmsg_ptr = (unsigned long)msg_sys->msg_control; msg_sys->msg_flags = flags & (MSG_CMSG_CLOEXEC|MSG_CMSG_COMPAT); |
89bddce58 [NET] socket: cod... |
2405 |
|
f3d334260 net: rework recvm... |
2406 2407 |
/* We assume all kernel code knows the size of sockaddr_storage */ msg_sys->msg_namelen = 0; |
1da177e4c Linux-2.6.12-rc2 |
2408 2409 |
if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; |
1af66221a net: avoid an ind... |
2410 2411 2412 2413 2414 |
if (unlikely(nosec)) err = sock_recvmsg_nosec(sock, msg_sys, flags); else err = sock_recvmsg(sock, msg_sys, flags); |
1da177e4c Linux-2.6.12-rc2 |
2415 |
if (err < 0) |
4257c8ca1 net: separate out... |
2416 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2417 2418 2419 |
len = err; if (uaddr != NULL) { |
43db362d3 net: get rid of s... |
2420 |
err = move_addr_to_user(&addr, |
a2e272554 net: Introduce re... |
2421 |
msg_sys->msg_namelen, uaddr, |
89bddce58 [NET] socket: cod... |
2422 |
uaddr_len); |
1da177e4c Linux-2.6.12-rc2 |
2423 |
if (err < 0) |
4257c8ca1 net: separate out... |
2424 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2425 |
} |
a2e272554 net: Introduce re... |
2426 |
err = __put_user((msg_sys->msg_flags & ~MSG_CMSG_COMPAT), |
37f7f421c [NET]: Do not lea... |
2427 |
COMPAT_FLAGS(msg)); |
1da177e4c Linux-2.6.12-rc2 |
2428 |
if (err) |
4257c8ca1 net: separate out... |
2429 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2430 |
if (MSG_CMSG_COMPAT & flags) |
a2e272554 net: Introduce re... |
2431 |
err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4c Linux-2.6.12-rc2 |
2432 2433 |
&msg_compat->msg_controllen); else |
a2e272554 net: Introduce re... |
2434 |
err = __put_user((unsigned long)msg_sys->msg_control - cmsg_ptr, |
1da177e4c Linux-2.6.12-rc2 |
2435 2436 |
&msg->msg_controllen); if (err) |
4257c8ca1 net: separate out... |
2437 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2438 |
err = len; |
4257c8ca1 net: separate out... |
2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 |
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 |
2454 |
|
4257c8ca1 net: separate out... |
2455 |
err = ____sys_recvmsg(sock, msg_sys, msg, uaddr, flags, nosec); |
da1842849 net: switch impor... |
2456 |
kfree(iov); |
a2e272554 net: Introduce re... |
2457 2458 2459 2460 2461 2462 |
return err; } /* * BSD recvmsg interface */ |
03b1230ca io_uring: ensure ... |
2463 2464 2465 |
long __sys_recvmsg_sock(struct socket *sock, struct msghdr *msg, struct user_msghdr __user *umsg, struct sockaddr __user *uaddr, unsigned int flags) |
aa1fa28fc io_uring: add sup... |
2466 |
{ |
583bbf062 io_uring: allow t... |
2467 2468 2469 2470 2471 |
if (msg->msg_control || msg->msg_controllen) { /* disallow ancillary data reqs unless cmsg is plain data */ if (!(sock->ops->flags & PROTO_CMSG_DATA_ONLY)) return -EINVAL; } |
aa1fa28fc io_uring: add sup... |
2472 |
|
03b1230ca io_uring: ensure ... |
2473 |
return ____sys_recvmsg(sock, msg, umsg, uaddr, flags, 0); |
aa1fa28fc io_uring: add sup... |
2474 |
} |
e1834a329 net: socket: move... |
2475 2476 |
long __sys_recvmsg(int fd, struct user_msghdr __user *msg, unsigned int flags, bool forbid_cmsg_compat) |
a2e272554 net: Introduce re... |
2477 2478 2479 |
{ int fput_needed, err; struct msghdr msg_sys; |
1be374a05 net: Block MSG_CM... |
2480 |
struct socket *sock; |
e1834a329 net: socket: move... |
2481 2482 |
if (forbid_cmsg_compat && (flags & MSG_CMSG_COMPAT)) return -EINVAL; |
1be374a05 net: Block MSG_CM... |
2483 |
sock = sockfd_lookup_light(fd, &err, &fput_needed); |
a2e272554 net: Introduce re... |
2484 2485 |
if (!sock) goto out; |
a7526eb5d net: Unbreak comp... |
2486 |
err = ___sys_recvmsg(sock, msg, &msg_sys, flags, 0); |
a2e272554 net: Introduce re... |
2487 |
|
6cb153cab [NET]: use fget_l... |
2488 |
fput_light(sock->file, fput_needed); |
1da177e4c Linux-2.6.12-rc2 |
2489 2490 2491 |
out: return err; } |
666547ff5 separate kernel- ... |
2492 |
SYSCALL_DEFINE3(recvmsg, int, fd, struct user_msghdr __user *, msg, |
a7526eb5d net: Unbreak comp... |
2493 2494 |
unsigned int, flags) { |
e1834a329 net: socket: move... |
2495 |
return __sys_recvmsg(fd, msg, flags, true); |
a7526eb5d net: Unbreak comp... |
2496 |
} |
a2e272554 net: Introduce re... |
2497 2498 2499 |
/* * Linux recvmmsg interface */ |
e11d4284e y2038: socket: Ad... |
2500 2501 2502 |
static int do_recvmmsg(int fd, struct mmsghdr __user *mmsg, unsigned int vlen, unsigned int flags, struct timespec64 *timeout) |
a2e272554 net: Introduce re... |
2503 2504 2505 2506 |
{ int fput_needed, err, datagrams; struct socket *sock; struct mmsghdr __user *entry; |
d7256d0eb net: compat_mmsgh... |
2507 |
struct compat_mmsghdr __user *compat_entry; |
a2e272554 net: Introduce re... |
2508 |
struct msghdr msg_sys; |
766b9f928 fs: poll/select/r... |
2509 2510 |
struct timespec64 end_time; struct timespec64 timeout64; |
a2e272554 net: Introduce re... |
2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 |
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... |
2522 2523 2524 2525 2526 2527 |
if (likely(!(flags & MSG_ERRQUEUE))) { err = sock_error(sock->sk); if (err) { datagrams = err; goto out_put; } |
e623a9e9d net: socket: fix ... |
2528 |
} |
a2e272554 net: Introduce re... |
2529 2530 |
entry = mmsg; |
d7256d0eb net: compat_mmsgh... |
2531 |
compat_entry = (struct compat_mmsghdr __user *)mmsg; |
a2e272554 net: Introduce re... |
2532 2533 2534 2535 2536 |
while (datagrams < vlen) { /* * No need to ask LSM for more than the first datagram. */ |
d7256d0eb net: compat_mmsgh... |
2537 |
if (MSG_CMSG_COMPAT & flags) { |
666547ff5 separate kernel- ... |
2538 |
err = ___sys_recvmsg(sock, (struct user_msghdr __user *)compat_entry, |
a7526eb5d net: Unbreak comp... |
2539 2540 |
&msg_sys, flags & ~MSG_WAITFORONE, datagrams); |
d7256d0eb net: compat_mmsgh... |
2541 2542 2543 2544 2545 |
if (err < 0) break; err = __put_user(err, &compat_entry->msg_len); ++compat_entry; } else { |
a7526eb5d net: Unbreak comp... |
2546 |
err = ___sys_recvmsg(sock, |
666547ff5 separate kernel- ... |
2547 |
(struct user_msghdr __user *)entry, |
a7526eb5d net: Unbreak comp... |
2548 2549 |
&msg_sys, flags & ~MSG_WAITFORONE, datagrams); |
d7256d0eb net: compat_mmsgh... |
2550 2551 2552 2553 2554 |
if (err < 0) break; err = put_user(err, &entry->msg_len); ++entry; } |
a2e272554 net: Introduce re... |
2555 2556 |
if (err) break; |
a2e272554 net: Introduce re... |
2557 |
++datagrams; |
71c5c1595 net: Add MSG_WAIT... |
2558 2559 2560 |
/* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ if (flags & MSG_WAITFORONE) flags |= MSG_DONTWAIT; |
a2e272554 net: Introduce re... |
2561 |
if (timeout) { |
766b9f928 fs: poll/select/r... |
2562 |
ktime_get_ts64(&timeout64); |
c2e6c8567 y2038: socket: Ch... |
2563 |
*timeout = timespec64_sub(end_time, timeout64); |
a2e272554 net: Introduce re... |
2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 |
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... |
2577 |
cond_resched(); |
a2e272554 net: Introduce re... |
2578 |
} |
a2e272554 net: Introduce re... |
2579 |
if (err == 0) |
34b88a68f net: Fix use afte... |
2580 2581 2582 2583 2584 2585 |
goto out_put; if (datagrams == 0) { datagrams = err; goto out_put; } |
a2e272554 net: Introduce re... |
2586 |
|
34b88a68f net: Fix use afte... |
2587 2588 2589 2590 2591 |
/* * 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... |
2592 |
/* |
34b88a68f net: Fix use afte... |
2593 2594 2595 2596 |
* ... 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... |
2597 |
*/ |
34b88a68f net: Fix use afte... |
2598 |
sock->sk->sk_err = -err; |
a2e272554 net: Introduce re... |
2599 |
} |
34b88a68f net: Fix use afte... |
2600 2601 |
out_put: fput_light(sock->file, fput_needed); |
a2e272554 net: Introduce re... |
2602 |
|
34b88a68f net: Fix use afte... |
2603 |
return datagrams; |
a2e272554 net: Introduce re... |
2604 |
} |
e11d4284e y2038: socket: Ad... |
2605 2606 2607 2608 |
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... |
2609 2610 |
{ int datagrams; |
c2e6c8567 y2038: socket: Ch... |
2611 |
struct timespec64 timeout_sys; |
a2e272554 net: Introduce re... |
2612 |
|
e11d4284e y2038: socket: Ad... |
2613 2614 |
if (timeout && get_timespec64(&timeout_sys, timeout)) return -EFAULT; |
a2e272554 net: Introduce re... |
2615 |
|
e11d4284e y2038: socket: Ad... |
2616 |
if (timeout32 && get_old_timespec32(&timeout_sys, timeout32)) |
a2e272554 net: Introduce re... |
2617 |
return -EFAULT; |
e11d4284e y2038: socket: Ad... |
2618 2619 2620 2621 |
if (!timeout && !timeout32) return do_recvmmsg(fd, mmsg, vlen, flags, NULL); datagrams = do_recvmmsg(fd, mmsg, vlen, flags, &timeout_sys); |
a2e272554 net: Introduce re... |
2622 |
|
e11d4284e y2038: socket: Ad... |
2623 2624 2625 2626 2627 2628 2629 |
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... |
2630 2631 2632 2633 |
datagrams = -EFAULT; return datagrams; } |
1255e2690 net: socket: add ... |
2634 2635 |
SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags, |
c2e6c8567 y2038: socket: Ch... |
2636 |
struct __kernel_timespec __user *, timeout) |
1255e2690 net: socket: add ... |
2637 |
{ |
e11d4284e y2038: socket: Ad... |
2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 |
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 ... |
2653 |
} |
e11d4284e y2038: socket: Ad... |
2654 |
#endif |
1255e2690 net: socket: add ... |
2655 |
|
a2e272554 net: Introduce re... |
2656 |
#ifdef __ARCH_WANT_SYS_SOCKETCALL |
1da177e4c Linux-2.6.12-rc2 |
2657 2658 |
/* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned long)) |
228e548e6 net: Add sendmmsg... |
2659 |
static const unsigned char nargs[21] = { |
c6d409cfd From abbffa2aa9bd... |
2660 2661 2662 |
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... |
2663 |
AL(4), AL(5), AL(4) |
89bddce58 [NET] socket: cod... |
2664 |
}; |
1da177e4c Linux-2.6.12-rc2 |
2665 2666 2667 |
#undef AL /* |
89bddce58 [NET] socket: cod... |
2668 |
* System call vectors. |
1da177e4c Linux-2.6.12-rc2 |
2669 2670 2671 |
* * Argument checking cleaned up. Saved 20% in size. * This function doesn't need to set the kernel lock because |
89bddce58 [NET] socket: cod... |
2672 |
* it is set by the callees. |
1da177e4c Linux-2.6.12-rc2 |
2673 |
*/ |
3e0fa65f8 [CVE-2009-0029] S... |
2674 |
SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) |
1da177e4c Linux-2.6.12-rc2 |
2675 |
{ |
2950fa9d3 kernel: audit: be... |
2676 |
unsigned long a[AUDITSC_ARGS]; |
89bddce58 [NET] socket: cod... |
2677 |
unsigned long a0, a1; |
1da177e4c Linux-2.6.12-rc2 |
2678 |
int err; |
47379052b net: Add explicit... |
2679 |
unsigned int len; |
1da177e4c Linux-2.6.12-rc2 |
2680 |
|
228e548e6 net: Add sendmmsg... |
2681 |
if (call < 1 || call > SYS_SENDMMSG) |
1da177e4c Linux-2.6.12-rc2 |
2682 |
return -EINVAL; |
c8e8cd579 net: socket: fix ... |
2683 |
call = array_index_nospec(call, SYS_SENDMMSG + 1); |
1da177e4c Linux-2.6.12-rc2 |
2684 |
|
47379052b net: Add explicit... |
2685 2686 2687 |
len = nargs[call]; if (len > sizeof(a)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
2688 |
/* copy_from_user should be SMP safe. */ |
47379052b net: Add explicit... |
2689 |
if (copy_from_user(a, args, len)) |
1da177e4c Linux-2.6.12-rc2 |
2690 |
return -EFAULT; |
3ec3b2fba AUDIT: Capture sy... |
2691 |
|
2950fa9d3 kernel: audit: be... |
2692 2693 2694 |
err = audit_socketcall(nargs[call] / sizeof(unsigned long), a); if (err) return err; |
3ec3b2fba AUDIT: Capture sy... |
2695 |
|
89bddce58 [NET] socket: cod... |
2696 2697 2698 2699 2700 |
a0 = a[0]; a1 = a[1]; switch (call) { case SYS_SOCKET: |
9d6a15c3f net: socket: add ... |
2701 |
err = __sys_socket(a0, a1, a[2]); |
89bddce58 [NET] socket: cod... |
2702 2703 |
break; case SYS_BIND: |
a87d35d87 net: socket: add ... |
2704 |
err = __sys_bind(a0, (struct sockaddr __user *)a1, a[2]); |
89bddce58 [NET] socket: cod... |
2705 2706 |
break; case SYS_CONNECT: |
1387c2c2f net: socket: add ... |
2707 |
err = __sys_connect(a0, (struct sockaddr __user *)a1, a[2]); |
89bddce58 [NET] socket: cod... |
2708 2709 |
break; case SYS_LISTEN: |
25e290eed net: socket: add ... |
2710 |
err = __sys_listen(a0, a1); |
89bddce58 [NET] socket: cod... |
2711 2712 |
break; case SYS_ACCEPT: |
4541e8056 net: socket: add ... |
2713 2714 |
err = __sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], 0); |
89bddce58 [NET] socket: cod... |
2715 2716 2717 |
break; case SYS_GETSOCKNAME: err = |
8882a107b net: socket: add ... |
2718 2719 |
__sys_getsockname(a0, (struct sockaddr __user *)a1, (int __user *)a[2]); |
89bddce58 [NET] socket: cod... |
2720 2721 2722 |
break; case SYS_GETPEERNAME: err = |
b21c8f838 net: socket: add ... |
2723 2724 |
__sys_getpeername(a0, (struct sockaddr __user *)a1, (int __user *)a[2]); |
89bddce58 [NET] socket: cod... |
2725 2726 |
break; case SYS_SOCKETPAIR: |
6debc8d83 net: socket: add ... |
2727 |
err = __sys_socketpair(a0, a1, a[2], (int __user *)a[3]); |
89bddce58 [NET] socket: cod... |
2728 2729 |
break; case SYS_SEND: |
f3bf896b1 net: socket: repl... |
2730 2731 |
err = __sys_sendto(a0, (void __user *)a1, a[2], a[3], NULL, 0); |
89bddce58 [NET] socket: cod... |
2732 2733 |
break; case SYS_SENDTO: |
211b634b7 net: socket: add ... |
2734 2735 |
err = __sys_sendto(a0, (void __user *)a1, a[2], a[3], (struct sockaddr __user *)a[4], a[5]); |
89bddce58 [NET] socket: cod... |
2736 2737 |
break; case SYS_RECV: |
d27e9afc6 net: socket: repl... |
2738 2739 |
err = __sys_recvfrom(a0, (void __user *)a1, a[2], a[3], NULL, NULL); |
89bddce58 [NET] socket: cod... |
2740 2741 |
break; case SYS_RECVFROM: |
7a09e1eb9 net: socket: add ... |
2742 2743 2744 |
err = __sys_recvfrom(a0, (void __user *)a1, a[2], a[3], (struct sockaddr __user *)a[4], (int __user *)a[5]); |
89bddce58 [NET] socket: cod... |
2745 2746 |
break; case SYS_SHUTDOWN: |
005a1aeac net: socket: add ... |
2747 |
err = __sys_shutdown(a0, a1); |
89bddce58 [NET] socket: cod... |
2748 2749 |
break; case SYS_SETSOCKOPT: |
cc36dca0d net: socket: add ... |
2750 2751 |
err = __sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]); |
89bddce58 [NET] socket: cod... |
2752 2753 2754 |
break; case SYS_GETSOCKOPT: err = |
13a2d70e2 net: socket: add ... |
2755 2756 |
__sys_getsockopt(a0, a1, a[2], (char __user *)a[3], (int __user *)a[4]); |
89bddce58 [NET] socket: cod... |
2757 2758 |
break; case SYS_SENDMSG: |
e1834a329 net: socket: move... |
2759 2760 |
err = __sys_sendmsg(a0, (struct user_msghdr __user *)a1, a[2], true); |
89bddce58 [NET] socket: cod... |
2761 |
break; |
228e548e6 net: Add sendmmsg... |
2762 |
case SYS_SENDMMSG: |
e1834a329 net: socket: move... |
2763 2764 |
err = __sys_sendmmsg(a0, (struct mmsghdr __user *)a1, a[2], a[3], true); |
228e548e6 net: Add sendmmsg... |
2765 |
break; |
89bddce58 [NET] socket: cod... |
2766 |
case SYS_RECVMSG: |
e1834a329 net: socket: move... |
2767 2768 |
err = __sys_recvmsg(a0, (struct user_msghdr __user *)a1, a[2], true); |
89bddce58 [NET] socket: cod... |
2769 |
break; |
a2e272554 net: Introduce re... |
2770 |
case SYS_RECVMMSG: |
3ca47e958 y2038: remove CON... |
2771 |
if (IS_ENABLED(CONFIG_64BIT)) |
e11d4284e y2038: socket: Ad... |
2772 2773 2774 2775 2776 2777 2778 2779 |
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... |
2780 |
break; |
de11defeb reintroduce accept4 |
2781 |
case SYS_ACCEPT4: |
4541e8056 net: socket: add ... |
2782 2783 |
err = __sys_accept4(a0, (struct sockaddr __user *)a1, (int __user *)a[2], a[3]); |
aaca0bdca flag parameters: ... |
2784 |
break; |
89bddce58 [NET] socket: cod... |
2785 2786 2787 |
default: err = -EINVAL; break; |
1da177e4c Linux-2.6.12-rc2 |
2788 2789 2790 |
} return err; } |
89bddce58 [NET] socket: cod... |
2791 |
#endif /* __ARCH_WANT_SYS_SOCKETCALL */ |
1da177e4c Linux-2.6.12-rc2 |
2792 |
|
55737fda0 [NET]: socket fam... |
2793 2794 2795 2796 |
/** * sock_register - add a socket protocol handler * @ops: description of protocol * |
1da177e4c Linux-2.6.12-rc2 |
2797 2798 |
* 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... |
2799 |
* socket interface. The value ops->family corresponds to the |
55737fda0 [NET]: socket fam... |
2800 |
* socket system call protocol family. |
1da177e4c Linux-2.6.12-rc2 |
2801 |
*/ |
f0fd27d42 [NET]: sock_regis... |
2802 |
int sock_register(const struct net_proto_family *ops) |
1da177e4c Linux-2.6.12-rc2 |
2803 2804 2805 2806 |
{ int err; if (ops->family >= NPROTO) { |
3410f22ea socket: replace s... |
2807 2808 |
pr_crit("protocol %d >= NPROTO(%d) ", ops->family, NPROTO); |
1da177e4c Linux-2.6.12-rc2 |
2809 2810 |
return -ENOBUFS; } |
55737fda0 [NET]: socket fam... |
2811 2812 |
spin_lock(&net_family_lock); |
190683a9d net: net_families... |
2813 2814 |
if (rcu_dereference_protected(net_families[ops->family], lockdep_is_held(&net_family_lock))) |
55737fda0 [NET]: socket fam... |
2815 2816 |
err = -EEXIST; else { |
cf778b00e net: reintroduce ... |
2817 |
rcu_assign_pointer(net_families[ops->family], ops); |
1da177e4c Linux-2.6.12-rc2 |
2818 2819 |
err = 0; } |
55737fda0 [NET]: socket fam... |
2820 |
spin_unlock(&net_family_lock); |
3410f22ea socket: replace s... |
2821 2822 |
pr_info("NET: Registered protocol family %d ", ops->family); |
1da177e4c Linux-2.6.12-rc2 |
2823 2824 |
return err; } |
c6d409cfd From abbffa2aa9bd... |
2825 |
EXPORT_SYMBOL(sock_register); |
1da177e4c Linux-2.6.12-rc2 |
2826 |
|
55737fda0 [NET]: socket fam... |
2827 2828 2829 2830 |
/** * sock_unregister - remove a protocol handler * @family: protocol family to remove * |
1da177e4c Linux-2.6.12-rc2 |
2831 2832 |
* 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... |
2833 2834 2835 2836 2837 2838 |
* 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 |
2839 |
*/ |
f0fd27d42 [NET]: sock_regis... |
2840 |
void sock_unregister(int family) |
1da177e4c Linux-2.6.12-rc2 |
2841 |
{ |
f0fd27d42 [NET]: sock_regis... |
2842 |
BUG_ON(family < 0 || family >= NPROTO); |
1da177e4c Linux-2.6.12-rc2 |
2843 |
|
55737fda0 [NET]: socket fam... |
2844 |
spin_lock(&net_family_lock); |
a9b3cd7f3 rcu: convert uses... |
2845 |
RCU_INIT_POINTER(net_families[family], NULL); |
55737fda0 [NET]: socket fam... |
2846 2847 2848 |
spin_unlock(&net_family_lock); synchronize_rcu(); |
3410f22ea socket: replace s... |
2849 2850 |
pr_info("NET: Unregistered protocol family %d ", family); |
1da177e4c Linux-2.6.12-rc2 |
2851 |
} |
c6d409cfd From abbffa2aa9bd... |
2852 |
EXPORT_SYMBOL(sock_unregister); |
1da177e4c Linux-2.6.12-rc2 |
2853 |
|
bf2ae2e4b sock_diag: reques... |
2854 2855 |
bool sock_is_registered(int family) { |
66b51b0a0 net: sock_diag: F... |
2856 |
return family < NPROTO && rcu_access_pointer(net_families[family]); |
bf2ae2e4b sock_diag: reques... |
2857 |
} |
77d76ea31 [NET]: Small clea... |
2858 |
static int __init sock_init(void) |
1da177e4c Linux-2.6.12-rc2 |
2859 |
{ |
b3e19d924 fs: scale mntget/... |
2860 |
int err; |
2ca794e5e net sysctl: Initi... |
2861 2862 2863 2864 2865 2866 |
/* * Initialize the network sysctl infrastructure. */ err = net_sysctl_init(); if (err) goto out; |
b3e19d924 fs: scale mntget/... |
2867 |
|
1da177e4c Linux-2.6.12-rc2 |
2868 |
/* |
89bddce58 [NET] socket: cod... |
2869 |
* Initialize skbuff SLAB cache |
1da177e4c Linux-2.6.12-rc2 |
2870 2871 |
*/ skb_init(); |
1da177e4c Linux-2.6.12-rc2 |
2872 2873 |
/* |
89bddce58 [NET] socket: cod... |
2874 |
* Initialize the protocols module. |
1da177e4c Linux-2.6.12-rc2 |
2875 2876 2877 |
*/ init_inodecache(); |
b3e19d924 fs: scale mntget/... |
2878 2879 2880 |
err = register_filesystem(&sock_fs_type); if (err) |
47260ba93 net: Remove meani... |
2881 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2882 |
sock_mnt = kern_mount(&sock_fs_type); |
b3e19d924 fs: scale mntget/... |
2883 2884 2885 2886 |
if (IS_ERR(sock_mnt)) { err = PTR_ERR(sock_mnt); goto out_mount; } |
77d76ea31 [NET]: Small clea... |
2887 2888 |
/* The real protocol initialization is performed in later initcalls. |
1da177e4c Linux-2.6.12-rc2 |
2889 2890 2891 |
*/ #ifdef CONFIG_NETFILTER |
6d11cfdba netfilter: don't ... |
2892 2893 2894 |
err = netfilter_init(); if (err) goto out; |
1da177e4c Linux-2.6.12-rc2 |
2895 |
#endif |
cbeb321a6 [NET]: Fix sock_i... |
2896 |
|
408eccce3 net: ptp: move PT... |
2897 |
ptp_classifier_init(); |
c1f19b51d net: support time... |
2898 |
|
b3e19d924 fs: scale mntget/... |
2899 2900 2901 2902 2903 |
out: return err; out_mount: unregister_filesystem(&sock_fs_type); |
b3e19d924 fs: scale mntget/... |
2904 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2905 |
} |
77d76ea31 [NET]: Small clea... |
2906 |
core_initcall(sock_init); /* early initcall */ |
1da177e4c Linux-2.6.12-rc2 |
2907 2908 2909 |
#ifdef CONFIG_PROC_FS void socket_seq_show(struct seq_file *seq) { |
648845ab7 sock: Move the so... |
2910 2911 2912 |
seq_printf(seq, "sockets: used %d ", sock_inuse_get(seq->private)); |
1da177e4c Linux-2.6.12-rc2 |
2913 |
} |
89bddce58 [NET] socket: cod... |
2914 |
#endif /* CONFIG_PROC_FS */ |
1da177e4c Linux-2.6.12-rc2 |
2915 |
|
89bbfc95d [NET]: allow 32 b... |
2916 |
#ifdef CONFIG_COMPAT |
36fd633ec net: separate SIO... |
2917 |
static int compat_dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32) |
7a229387d net: copy socket ... |
2918 |
{ |
6b96018b2 compat: move sock... |
2919 |
struct compat_ifconf ifc32; |
7a229387d net: copy socket ... |
2920 |
struct ifconf ifc; |
7a229387d net: copy socket ... |
2921 |
int err; |
6b96018b2 compat: move sock... |
2922 |
if (copy_from_user(&ifc32, uifc32, sizeof(struct compat_ifconf))) |
7a229387d net: copy socket ... |
2923 |
return -EFAULT; |
36fd633ec net: separate SIO... |
2924 2925 |
ifc.ifc_len = ifc32.ifc_len; ifc.ifc_req = compat_ptr(ifc32.ifcbuf); |
7a229387d net: copy socket ... |
2926 |
|
36fd633ec net: separate SIO... |
2927 2928 2929 |
rtnl_lock(); err = dev_ifconf(net, &ifc, sizeof(struct compat_ifreq)); rtnl_unlock(); |
7a229387d net: copy socket ... |
2930 2931 |
if (err) return err; |
36fd633ec net: separate SIO... |
2932 |
ifc32.ifc_len = ifc.ifc_len; |
6b96018b2 compat: move sock... |
2933 |
if (copy_to_user(uifc32, &ifc32, sizeof(struct compat_ifconf))) |
7a229387d net: copy socket ... |
2934 2935 2936 2937 |
return -EFAULT; return 0; } |
6b96018b2 compat: move sock... |
2938 |
static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32) |
7a229387d net: copy socket ... |
2939 |
{ |
3a7da39d1 ethtool: Compat h... |
2940 2941 |
struct compat_ethtool_rxnfc __user *compat_rxnfc; bool convert_in = false, convert_out = false; |
44c02a2c3 dev_ioctl(): move... |
2942 2943 2944 |
size_t buf_size = 0; struct ethtool_rxnfc __user *rxnfc = NULL; struct ifreq ifr; |
3a7da39d1 ethtool: Compat h... |
2945 2946 |
u32 rule_cnt = 0, actual_rule_cnt; u32 ethcmd; |
7a229387d net: copy socket ... |
2947 |
u32 data; |
3a7da39d1 ethtool: Compat h... |
2948 |
int ret; |
7a229387d net: copy socket ... |
2949 |
|
3a7da39d1 ethtool: Compat h... |
2950 2951 |
if (get_user(data, &ifr32->ifr_ifru.ifru_data)) return -EFAULT; |
7a229387d net: copy socket ... |
2952 |
|
3a7da39d1 ethtool: Compat h... |
2953 2954 2955 |
compat_rxnfc = compat_ptr(data); if (get_user(ethcmd, &compat_rxnfc->cmd)) |
7a229387d net: copy socket ... |
2956 |
return -EFAULT; |
3a7da39d1 ethtool: Compat h... |
2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 |
/* 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); |
7c7ab580d net: Convert to u... |
2970 |
fallthrough; |
3a7da39d1 ethtool: Compat h... |
2971 2972 2973 |
case ETHTOOL_GRXRINGS: case ETHTOOL_GRXCLSRLCNT: case ETHTOOL_GRXCLSRULE: |
55664f324 ethtool: Allow dr... |
2974 |
case ETHTOOL_SRXCLSRLINS: |
3a7da39d1 ethtool: Compat h... |
2975 |
convert_out = true; |
7c7ab580d net: Convert to u... |
2976 |
fallthrough; |
3a7da39d1 ethtool: Compat h... |
2977 |
case ETHTOOL_SRXCLSRLDEL: |
3a7da39d1 ethtool: Compat h... |
2978 2979 |
buf_size += sizeof(struct ethtool_rxnfc); convert_in = true; |
44c02a2c3 dev_ioctl(): move... |
2980 |
rxnfc = compat_alloc_user_space(buf_size); |
3a7da39d1 ethtool: Compat h... |
2981 2982 |
break; } |
44c02a2c3 dev_ioctl(): move... |
2983 |
if (copy_from_user(&ifr.ifr_name, &ifr32->ifr_name, IFNAMSIZ)) |
7a229387d net: copy socket ... |
2984 |
return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
2985 |
ifr.ifr_data = convert_in ? rxnfc : (void __user *)compat_rxnfc; |
7a229387d net: copy socket ... |
2986 |
|
3a7da39d1 ethtool: Compat h... |
2987 |
if (convert_in) { |
127fe533a v3 ethtool: add n... |
2988 |
/* We expect there to be holes between fs.m_ext and |
3a7da39d1 ethtool: Compat h... |
2989 2990 |
* fs.ring_cookie and at the end of fs, but nowhere else. */ |
127fe533a v3 ethtool: add n... |
2991 2992 2993 2994 |
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... |
2995 2996 2997 2998 2999 3000 3001 |
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... |
3002 3003 |
(void __user *)(&rxnfc->fs.m_ext + 1) - (void __user *)rxnfc) || |
3a7da39d1 ethtool: Compat h... |
3004 3005 |
copy_in_user(&rxnfc->fs.ring_cookie, &compat_rxnfc->fs.ring_cookie, |
954b12445 ethtool: fix spar... |
3006 |
(void __user *)(&rxnfc->fs.location + 1) - |
b6168562c net: socket: fix ... |
3007 3008 3009 3010 3011 3012 3013 3014 |
(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... |
3015 3016 |
return -EFAULT; } |
44c02a2c3 dev_ioctl(): move... |
3017 |
ret = dev_ioctl(net, SIOCETHTOOL, &ifr, NULL); |
3a7da39d1 ethtool: Compat h... |
3018 3019 3020 3021 3022 |
if (ret) return ret; if (convert_out) { if (copy_in_user(compat_rxnfc, rxnfc, |
954b12445 ethtool: fix spar... |
3023 3024 |
(const void __user *)(&rxnfc->fs.m_ext + 1) - (const void __user *)rxnfc) || |
3a7da39d1 ethtool: Compat h... |
3025 3026 |
copy_in_user(&compat_rxnfc->fs.ring_cookie, &rxnfc->fs.ring_cookie, |
954b12445 ethtool: fix spar... |
3027 3028 |
(const void __user *)(&rxnfc->fs.location + 1) - (const void __user *)&rxnfc->fs.ring_cookie) || |
3a7da39d1 ethtool: Compat h... |
3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 |
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 ... |
3054 |
} |
7a50a240c net/compat_ioctl:... |
3055 3056 |
static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32) { |
7a50a240c net/compat_ioctl:... |
3057 |
compat_uptr_t uptr32; |
44c02a2c3 dev_ioctl(): move... |
3058 3059 3060 |
struct ifreq ifr; void __user *saved; int err; |
7a50a240c net/compat_ioctl:... |
3061 |
|
44c02a2c3 dev_ioctl(): move... |
3062 |
if (copy_from_user(&ifr, uifr32, sizeof(struct compat_ifreq))) |
7a50a240c net/compat_ioctl:... |
3063 3064 3065 3066 |
return -EFAULT; if (get_user(uptr32, &uifr32->ifr_settings.ifs_ifsu)) return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3067 3068 |
saved = ifr.ifr_settings.ifs_ifsu.raw_hdlc; ifr.ifr_settings.ifs_ifsu.raw_hdlc = compat_ptr(uptr32); |
7a229387d net: copy socket ... |
3069 |
|
44c02a2c3 dev_ioctl(): move... |
3070 3071 3072 3073 3074 |
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... |
3075 |
} |
44c02a2c3 dev_ioctl(): move... |
3076 |
return err; |
7a229387d net: copy socket ... |
3077 |
} |
590d4693f net/compat: Merge... |
3078 3079 |
/* 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... |
3080 |
struct compat_ifreq __user *u_ifreq32) |
7a229387d net: copy socket ... |
3081 |
{ |
44c02a2c3 dev_ioctl(): move... |
3082 |
struct ifreq ifreq; |
7a229387d net: copy socket ... |
3083 |
u32 data32; |
44c02a2c3 dev_ioctl(): move... |
3084 |
if (copy_from_user(ifreq.ifr_name, u_ifreq32->ifr_name, IFNAMSIZ)) |
7a229387d net: copy socket ... |
3085 |
return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3086 |
if (get_user(data32, &u_ifreq32->ifr_data)) |
7a229387d net: copy socket ... |
3087 |
return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3088 |
ifreq.ifr_data = compat_ptr(data32); |
7a229387d net: copy socket ... |
3089 |
|
44c02a2c3 dev_ioctl(): move... |
3090 |
return dev_ioctl(net, cmd, &ifreq, NULL); |
7a229387d net: copy socket ... |
3091 |
} |
37ac39bdd Revert "kill dev_... |
3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 |
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 ... |
3131 |
case SIOCGIFNAME: |
37ac39bdd Revert "kill dev_... |
3132 3133 3134 3135 3136 3137 3138 |
if (copy_in_user(uifr32, uifr, sizeof(*uifr32))) err = -EFAULT; break; } } return err; } |
a2116ed22 net/compat: fix d... |
3139 3140 3141 3142 3143 |
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... |
3144 3145 3146 3147 |
int err; uifmap32 = &uifr32->ifr_ifru.ifru_map; err = copy_from_user(&ifr, uifr32, sizeof(ifr.ifr_name)); |
3ddc5b46a kernel-wide: fix ... |
3148 3149 3150 3151 3152 3153 |
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... |
3154 3155 |
if (err) return -EFAULT; |
44c02a2c3 dev_ioctl(): move... |
3156 |
err = dev_ioctl(net, cmd, &ifr, NULL); |
a2116ed22 net/compat: fix d... |
3157 3158 3159 |
if (cmd == SIOCGIFMAP && !err) { err = copy_to_user(uifr32, &ifr, sizeof(ifr.ifr_name)); |
3ddc5b46a kernel-wide: fix ... |
3160 3161 3162 3163 3164 3165 |
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... |
3166 3167 3168 3169 3170 |
if (err) err = -EFAULT; } return err; } |
7a229387d net: copy socket ... |
3171 3172 |
/* 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... |
3173 |
* use compatible ioctls |
7a229387d net: copy socket ... |
3174 |
*/ |
6b96018b2 compat: move sock... |
3175 |
static int old_bridge_ioctl(compat_ulong_t __user *argp) |
7a229387d net: copy socket ... |
3176 |
{ |
6b96018b2 compat: move sock... |
3177 |
compat_ulong_t tmp; |
7a229387d net: copy socket ... |
3178 |
|
6b96018b2 compat: move sock... |
3179 |
if (get_user(tmp, argp)) |
7a229387d net: copy socket ... |
3180 3181 3182 3183 3184 |
return -EFAULT; if (tmp == BRCTL_GET_VERSION) return BRCTL_VERSION + 1; return -EINVAL; } |
6b96018b2 compat: move sock... |
3185 3186 3187 3188 3189 3190 |
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 ... |
3191 |
|
6b96018b2 compat: move sock... |
3192 |
if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) |
590d4693f net/compat: Merge... |
3193 |
return compat_ifr_data_ioctl(net, cmd, argp); |
6b96018b2 compat: move sock... |
3194 3195 3196 3197 3198 |
switch (cmd) { case SIOCSIFBR: case SIOCGIFBR: return old_bridge_ioctl(argp); |
6b96018b2 compat: move sock... |
3199 |
case SIOCGIFCONF: |
36fd633ec net: separate SIO... |
3200 |
return compat_dev_ifconf(net, argp); |
6b96018b2 compat: move sock... |
3201 3202 |
case SIOCETHTOOL: return ethtool_ioctl(net, argp); |
7a50a240c net/compat_ioctl:... |
3203 3204 |
case SIOCWANDEV: return compat_siocwandev(net, argp); |
a2116ed22 net/compat: fix d... |
3205 3206 3207 |
case SIOCGIFMAP: case SIOCSIFMAP: return compat_sioc_ifmap(net, cmd, argp); |
0768e1707 net: socket: impl... |
3208 3209 |
case SIOCGSTAMP_OLD: case SIOCGSTAMPNS_OLD: |
c7cbdbf29 net: rework SIOCG... |
3210 3211 |
if (!sock->ops->gettstamp) return -ENOIOCTLCMD; |
0768e1707 net: socket: impl... |
3212 |
return sock->ops->gettstamp(sock, argp, cmd == SIOCGSTAMP_OLD, |
c7cbdbf29 net: rework SIOCG... |
3213 |
!COMPAT_USE_64BIT_TIME); |
590d4693f net/compat: Merge... |
3214 3215 |
case SIOCBONDSLAVEINFOQUERY: case SIOCBONDINFOQUERY: |
a2116ed22 net/compat: fix d... |
3216 |
case SIOCSHWTSTAMP: |
fd468c74b net_tstamp: Add S... |
3217 |
case SIOCGHWTSTAMP: |
590d4693f net/compat: Merge... |
3218 |
return compat_ifr_data_ioctl(net, cmd, argp); |
6b96018b2 compat: move sock... |
3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 |
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... |
3230 |
case SIOCGSKNS: |
0768e1707 net: socket: impl... |
3231 3232 |
case SIOCGSTAMP_NEW: case SIOCGSTAMPNS_NEW: |
6b96018b2 compat: move sock... |
3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 |
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... |
3248 3249 3250 |
case SIOCGIFADDR: case SIOCSIFADDR: case SIOCSIFHWBROADCAST: |
6b96018b2 compat: move sock... |
3251 |
case SIOCDIFADDR: |
6b96018b2 compat: move sock... |
3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 |
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 ... |
3264 |
case SIOCGIFNAME: |
9177efd39 net, compat_ioctl... |
3265 3266 3267 3268 |
case SIOCSIFNAME: case SIOCGMIIPHY: case SIOCGMIIREG: case SIOCSMIIREG: |
f92d4fc95 kill bond_ioctl() |
3269 3270 3271 3272 |
case SIOCBONDENSLAVE: case SIOCBONDRELEASE: case SIOCBONDSETHWADDR: case SIOCBONDCHANGEACTIVE: |
37ac39bdd Revert "kill dev_... |
3273 |
return compat_ifreq_ioctl(net, sock, cmd, argp); |
6b96018b2 compat: move sock... |
3274 3275 3276 |
case SIOCSARP: case SIOCGARP: case SIOCDARP: |
c7dc504e2 compat_ioctl: mov... |
3277 |
case SIOCOUTQ: |
9d7bf41fa compat_ioctl: han... |
3278 |
case SIOCOUTQNSD: |
6b96018b2 compat: move sock... |
3279 |
case SIOCATMARK: |
63ff03ab7 Revert "socket: f... |
3280 |
return sock_do_ioctl(net, sock, cmd, arg); |
9177efd39 net, compat_ioctl... |
3281 |
} |
6b96018b2 compat: move sock... |
3282 3283 |
return -ENOIOCTLCMD; } |
7a229387d net: copy socket ... |
3284 |
|
95c961747 net: cleanup unsi... |
3285 |
static long compat_sock_ioctl(struct file *file, unsigned int cmd, |
89bddce58 [NET] socket: cod... |
3286 |
unsigned long arg) |
89bbfc95d [NET]: allow 32 b... |
3287 3288 3289 |
{ struct socket *sock = file->private_data; int ret = -ENOIOCTLCMD; |
87de87d5e wext: Dispatch an... |
3290 3291 3292 3293 3294 |
struct sock *sk; struct net *net; sk = sock->sk; net = sock_net(sk); |
89bbfc95d [NET]: allow 32 b... |
3295 3296 3297 |
if (sock->ops->compat_ioctl) ret = sock->ops->compat_ioctl(sock, cmd, arg); |
87de87d5e wext: Dispatch an... |
3298 3299 3300 |
if (ret == -ENOIOCTLCMD && (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)) ret = compat_wext_handle_ioctl(net, cmd, arg); |
6b96018b2 compat: move sock... |
3301 3302 |
if (ret == -ENOIOCTLCMD) ret = compat_sock_ioctl_trans(file, sock, cmd, arg); |
89bbfc95d [NET]: allow 32 b... |
3303 3304 3305 |
return ret; } #endif |
8a3c245c0 net: add document... |
3306 3307 3308 3309 3310 3311 3312 3313 |
/** * 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 ... |
3314 3315 3316 3317 |
int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen) { return sock->ops->bind(sock, addr, addrlen); } |
c6d409cfd From abbffa2aa9bd... |
3318 |
EXPORT_SYMBOL(kernel_bind); |
ac5a488ef [NET]: Round out ... |
3319 |
|
8a3c245c0 net: add document... |
3320 3321 3322 3323 3324 3325 3326 |
/** * 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 ... |
3327 3328 3329 3330 |
int kernel_listen(struct socket *sock, int backlog) { return sock->ops->listen(sock, backlog); } |
c6d409cfd From abbffa2aa9bd... |
3331 |
EXPORT_SYMBOL(kernel_listen); |
ac5a488ef [NET]: Round out ... |
3332 |
|
8a3c245c0 net: add document... |
3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 |
/** * 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 ... |
3343 3344 3345 3346 3347 3348 3349 3350 3351 |
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 ... |
3352 |
err = sock->ops->accept(sock, *newsock, flags, true); |
ac5a488ef [NET]: Round out ... |
3353 3354 |
if (err < 0) { sock_release(*newsock); |
fa8705b00 [NET]: sanitize k... |
3355 |
*newsock = NULL; |
ac5a488ef [NET]: Round out ... |
3356 3357 3358 3359 |
goto done; } (*newsock)->ops = sock->ops; |
1b08534e5 net: Fix module r... |
3360 |
__module_get((*newsock)->ops->owner); |
ac5a488ef [NET]: Round out ... |
3361 3362 3363 3364 |
done: return err; } |
c6d409cfd From abbffa2aa9bd... |
3365 |
EXPORT_SYMBOL(kernel_accept); |
ac5a488ef [NET]: Round out ... |
3366 |
|
8a3c245c0 net: add document... |
3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 |
/** * 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 ... |
3379 |
int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen, |
4768fbcbc [NET]: Fix whites... |
3380 |
int flags) |
ac5a488ef [NET]: Round out ... |
3381 3382 3383 |
{ return sock->ops->connect(sock, addr, addrlen, flags); } |
c6d409cfd From abbffa2aa9bd... |
3384 |
EXPORT_SYMBOL(kernel_connect); |
ac5a488ef [NET]: Round out ... |
3385 |
|
8a3c245c0 net: add document... |
3386 3387 3388 3389 3390 3391 3392 3393 |
/** * 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... |
3394 |
int kernel_getsockname(struct socket *sock, struct sockaddr *addr) |
ac5a488ef [NET]: Round out ... |
3395 |
{ |
9b2c45d47 net: make getname... |
3396 |
return sock->ops->getname(sock, addr, 0); |
ac5a488ef [NET]: Round out ... |
3397 |
} |
c6d409cfd From abbffa2aa9bd... |
3398 |
EXPORT_SYMBOL(kernel_getsockname); |
ac5a488ef [NET]: Round out ... |
3399 |
|
8a3c245c0 net: add document... |
3400 |
/** |
645f08975 net: Fix some com... |
3401 |
* kernel_getpeername - get the address which the socket is connected (kernel space) |
8a3c245c0 net: add document... |
3402 3403 3404 3405 3406 3407 |
* @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... |
3408 |
int kernel_getpeername(struct socket *sock, struct sockaddr *addr) |
ac5a488ef [NET]: Round out ... |
3409 |
{ |
9b2c45d47 net: make getname... |
3410 |
return sock->ops->getname(sock, addr, 1); |
ac5a488ef [NET]: Round out ... |
3411 |
} |
c6d409cfd From abbffa2aa9bd... |
3412 |
EXPORT_SYMBOL(kernel_getpeername); |
ac5a488ef [NET]: Round out ... |
3413 |
|
8a3c245c0 net: add document... |
3414 |
/** |
8a3c245c0 net: add document... |
3415 3416 3417 3418 3419 3420 3421 3422 3423 |
* 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 ... |
3424 3425 3426 |
int kernel_sendpage(struct socket *sock, struct page *page, int offset, size_t size, int flags) { |
7b62d31d3 net: add WARN_ONC... |
3427 3428 3429 |
if (sock->ops->sendpage) { /* Warn in case the improper page to zero-copy send */ WARN_ONCE(!sendpage_ok(page), "improper page for zero-copy send"); |
ac5a488ef [NET]: Round out ... |
3430 |
return sock->ops->sendpage(sock, page, offset, size, flags); |
7b62d31d3 net: add WARN_ONC... |
3431 |
} |
ac5a488ef [NET]: Round out ... |
3432 3433 |
return sock_no_sendpage(sock, page, offset, size, flags); } |
c6d409cfd From abbffa2aa9bd... |
3434 |
EXPORT_SYMBOL(kernel_sendpage); |
ac5a488ef [NET]: Round out ... |
3435 |
|
8a3c245c0 net: add document... |
3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 |
/** * 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... |
3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 |
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... |
3459 |
/** |
645f08975 net: Fix some com... |
3460 |
* kernel_sock_shutdown - shut down part of a full-duplex connection (kernel space) |
8a3c245c0 net: add document... |
3461 3462 3463 3464 3465 |
* @sock: socket * @how: connection part * * Returns 0 or an error. */ |
91cf45f02 [NET]: Add the he... |
3466 3467 3468 3469 |
int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how) { return sock->ops->shutdown(sock, how); } |
91cf45f02 [NET]: Add the he... |
3470 |
EXPORT_SYMBOL(kernel_sock_shutdown); |
113c30759 New kernel functi... |
3471 |
|
8a3c245c0 net: add document... |
3472 3473 3474 3475 3476 3477 3478 3479 |
/** * 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... |
3480 |
*/ |
8a3c245c0 net: add document... |
3481 |
|
113c30759 New kernel functi... |
3482 3483 3484 3485 3486 |
u32 kernel_sock_ip_overhead(struct sock *sk) { struct inet_sock *inet; struct ip_options_rcu *opt; u32 overhead = 0; |
113c30759 New kernel functi... |
3487 3488 3489 3490 3491 3492 3493 |
#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... |
3494 3495 3496 3497 3498 |
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... |
3499 |
sock_owned_by_user(sk)); |
113c30759 New kernel functi... |
3500 3501 3502 3503 3504 3505 3506 3507 3508 |
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... |
3509 |
sock_owned_by_user(sk)); |
113c30759 New kernel functi... |
3510 3511 3512 3513 3514 3515 3516 3517 3518 |
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); |