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net/compat.c
24 KB
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/* |
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* 32bit Socket syscall emulation. Based on arch/sparc64/kernel/sys_sparc32.c. * * Copyright (C) 2000 VA Linux Co * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 2000 Hewlett-Packard Co. * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> |
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* Copyright (C) 2000,2001 Andi Kleen, SuSE Labs |
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*/ #include <linux/kernel.h> #include <linux/fs.h> |
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#include <linux/types.h> #include <linux/file.h> #include <linux/icmpv6.h> #include <linux/socket.h> #include <linux/syscalls.h> #include <linux/filter.h> #include <linux/compat.h> |
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#include <linux/security.h> #include <net/scm.h> #include <net/sock.h> |
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#include <net/ip.h> #include <net/ipv6.h> |
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#include <asm/uaccess.h> #include <net/compat.h> static inline int iov_from_user_compat_to_kern(struct iovec *kiov, struct compat_iovec __user *uiov32, int niov) { int tot_len = 0; |
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while (niov > 0) { |
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compat_uptr_t buf; compat_size_t len; |
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if (get_user(len, &uiov32->iov_len) || |
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get_user(buf, &uiov32->iov_base)) { tot_len = -EFAULT; break; } tot_len += len; kiov->iov_base = compat_ptr(buf); kiov->iov_len = (__kernel_size_t) len; uiov32++; kiov++; niov--; } return tot_len; } int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg) { compat_uptr_t tmp1, tmp2, tmp3; if (!access_ok(VERIFY_READ, umsg, sizeof(*umsg)) || __get_user(tmp1, &umsg->msg_name) || __get_user(kmsg->msg_namelen, &umsg->msg_namelen) || __get_user(tmp2, &umsg->msg_iov) || __get_user(kmsg->msg_iovlen, &umsg->msg_iovlen) || __get_user(tmp3, &umsg->msg_control) || __get_user(kmsg->msg_controllen, &umsg->msg_controllen) || __get_user(kmsg->msg_flags, &umsg->msg_flags)) return -EFAULT; kmsg->msg_name = compat_ptr(tmp1); kmsg->msg_iov = compat_ptr(tmp2); kmsg->msg_control = compat_ptr(tmp3); return 0; } /* I've named the args so it is easy to tell whose space the pointers are in. */ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov, |
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struct sockaddr *kern_address, int mode) |
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{ int tot_len; |
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if (kern_msg->msg_namelen) { if (mode==VERIFY_READ) { |
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int err = move_addr_to_kernel(kern_msg->msg_name, kern_msg->msg_namelen, kern_address); |
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if (err < 0) |
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return err; } kern_msg->msg_name = kern_address; } else kern_msg->msg_name = NULL; |
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tot_len = iov_from_user_compat_to_kern(kern_iov, (struct compat_iovec __user *)kern_msg->msg_iov, kern_msg->msg_iovlen); |
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if (tot_len >= 0) |
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kern_msg->msg_iov = kern_iov; |
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return tot_len; } /* Bleech... */ #define CMSG_COMPAT_ALIGN(len) ALIGN((len), sizeof(s32)) #define CMSG_COMPAT_DATA(cmsg) \ ((void __user *)((char __user *)(cmsg) + CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)))) #define CMSG_COMPAT_SPACE(len) \ (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + CMSG_COMPAT_ALIGN(len)) #define CMSG_COMPAT_LEN(len) \ (CMSG_COMPAT_ALIGN(sizeof(struct compat_cmsghdr)) + (len)) #define CMSG_COMPAT_FIRSTHDR(msg) \ (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \ (struct compat_cmsghdr __user *)((msg)->msg_control) : \ (struct compat_cmsghdr __user *)NULL) #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \ ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ (ucmlen) <= (unsigned long) \ ((mhdr)->msg_controllen - \ ((char *)(ucmsg) - (char *)(mhdr)->msg_control))) static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, struct compat_cmsghdr __user *cmsg, int cmsg_len) { char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len); if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) > msg->msg_controllen) return NULL; return (struct compat_cmsghdr __user *)ptr; } /* There is a lot of hair here because the alignment rules (and * thus placement) of cmsg headers and length are different for * 32-bit apps. -DaveM */ |
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int cmsghdr_from_user_compat_to_kern(struct msghdr *kmsg, struct sock *sk, |
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unsigned char *stackbuf, int stackbuf_size) { struct compat_cmsghdr __user *ucmsg; struct cmsghdr *kcmsg, *kcmsg_base; compat_size_t ucmlen; __kernel_size_t kcmlen, tmp; |
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int err = -EFAULT; |
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kcmlen = 0; kcmsg_base = kcmsg = (struct cmsghdr *)stackbuf; ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); |
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while (ucmsg != NULL) { if (get_user(ucmlen, &ucmsg->cmsg_len)) |
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return -EFAULT; /* Catch bogons. */ if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) return -EINVAL; tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + CMSG_ALIGN(sizeof(struct cmsghdr))); |
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tmp = CMSG_ALIGN(tmp); |
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kcmlen += tmp; ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); } |
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if (kcmlen == 0) |
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return -EINVAL; /* The kcmlen holds the 64-bit version of the control length. * It may not be modified as we do not stick it into the kmsg * until we have successfully copied over all of the data * from the user. */ |
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if (kcmlen > stackbuf_size) kcmsg_base = kcmsg = sock_kmalloc(sk, kcmlen, GFP_KERNEL); if (kcmsg == NULL) |
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return -ENOBUFS; /* Now copy them over neatly. */ memset(kcmsg, 0, kcmlen); ucmsg = CMSG_COMPAT_FIRSTHDR(kmsg); |
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while (ucmsg != NULL) { |
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if (__get_user(ucmlen, &ucmsg->cmsg_len)) goto Efault; if (!CMSG_COMPAT_OK(ucmlen, ucmsg, kmsg)) goto Einval; |
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tmp = ((ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))) + CMSG_ALIGN(sizeof(struct cmsghdr))); |
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if ((char *)kcmsg_base + kcmlen - (char *)kcmsg < CMSG_ALIGN(tmp)) goto Einval; |
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kcmsg->cmsg_len = tmp; |
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tmp = CMSG_ALIGN(tmp); if (__get_user(kcmsg->cmsg_level, &ucmsg->cmsg_level) || __get_user(kcmsg->cmsg_type, &ucmsg->cmsg_type) || copy_from_user(CMSG_DATA(kcmsg), CMSG_COMPAT_DATA(ucmsg), (ucmlen - CMSG_COMPAT_ALIGN(sizeof(*ucmsg))))) goto Efault; |
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/* Advance. */ |
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kcmsg = (struct cmsghdr *)((char *)kcmsg + tmp); |
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ucmsg = cmsg_compat_nxthdr(kmsg, ucmsg, ucmlen); } /* Ok, looks like we made it. Hook it up and return success. */ kmsg->msg_control = kcmsg_base; kmsg->msg_controllen = kcmlen; return 0; |
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Einval: err = -EINVAL; Efault: if (kcmsg_base != (struct cmsghdr *)stackbuf) sock_kfree_s(sk, kcmsg_base, kcmlen); return err; |
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} int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data) { struct compat_timeval ctv; |
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struct compat_timespec cts[3]; |
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struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; struct compat_cmsghdr cmhdr; int cmlen; |
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if (cm == NULL || kmsg->msg_controllen < sizeof(*cm)) { |
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kmsg->msg_flags |= MSG_CTRUNC; return 0; /* XXX: return error? check spec. */ } |
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if (level == SOL_SOCKET && type == SCM_TIMESTAMP) { |
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struct timeval *tv = (struct timeval *)data; ctv.tv_sec = tv->tv_sec; ctv.tv_usec = tv->tv_usec; data = &ctv; |
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len = sizeof(ctv); } |
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if (level == SOL_SOCKET && (type == SCM_TIMESTAMPNS || type == SCM_TIMESTAMPING)) { int count = type == SCM_TIMESTAMPNS ? 1 : 3; int i; |
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struct timespec *ts = (struct timespec *)data; |
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for (i = 0; i < count; i++) { cts[i].tv_sec = ts[i].tv_sec; cts[i].tv_nsec = ts[i].tv_nsec; } |
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data = &cts; |
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len = sizeof(cts[0]) * count; |
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} |
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cmlen = CMSG_COMPAT_LEN(len); |
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if (kmsg->msg_controllen < cmlen) { |
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kmsg->msg_flags |= MSG_CTRUNC; cmlen = kmsg->msg_controllen; } cmhdr.cmsg_level = level; cmhdr.cmsg_type = type; cmhdr.cmsg_len = cmlen; |
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if (copy_to_user(cm, &cmhdr, sizeof cmhdr)) |
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return -EFAULT; |
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if (copy_to_user(CMSG_COMPAT_DATA(cm), data, cmlen - sizeof(struct compat_cmsghdr))) |
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return -EFAULT; cmlen = CMSG_COMPAT_SPACE(len); |
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if (kmsg->msg_controllen < cmlen) cmlen = kmsg->msg_controllen; |
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kmsg->msg_control += cmlen; kmsg->msg_controllen -= cmlen; return 0; } void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm) { struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control; int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int); int fdnum = scm->fp->count; struct file **fp = scm->fp->fp; int __user *cmfptr; int err = 0, i; if (fdnum < fdmax) fdmax = fdnum; for (i = 0, cmfptr = (int __user *) CMSG_COMPAT_DATA(cm); i < fdmax; i++, cmfptr++) { int new_fd; err = security_file_receive(fp[i]); if (err) break; |
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err = get_unused_fd_flags(MSG_CMSG_CLOEXEC & kmsg->msg_flags ? O_CLOEXEC : 0); |
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if (err < 0) break; new_fd = err; err = put_user(new_fd, cmfptr); if (err) { put_unused_fd(new_fd); break; } /* Bump the usage count and install the file. */ get_file(fp[i]); fd_install(new_fd, fp[i]); } if (i > 0) { int cmlen = CMSG_COMPAT_LEN(i * sizeof(int)); |
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err = put_user(SOL_SOCKET, &cm->cmsg_level); |
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if (!err) err = put_user(SCM_RIGHTS, &cm->cmsg_type); if (!err) err = put_user(cmlen, &cm->cmsg_len); if (!err) { cmlen = CMSG_COMPAT_SPACE(i * sizeof(int)); kmsg->msg_control += cmlen; kmsg->msg_controllen -= cmlen; } } if (i < fdnum) kmsg->msg_flags |= MSG_CTRUNC; /* * All of the files that fit in the message have had their * usage counts incremented, so we just free the list. */ __scm_destroy(scm); } /* |
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* A struct sock_filter is architecture independent. */ struct compat_sock_fprog { u16 len; compat_uptr_t filter; /* struct sock_filter * */ }; |
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static int do_set_attach_filter(struct socket *sock, int level, int optname, |
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char __user *optval, unsigned int optlen) |
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{ struct compat_sock_fprog __user *fprog32 = (struct compat_sock_fprog __user *)optval; |
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struct sock_fprog __user *kfprog = compat_alloc_user_space(sizeof(struct sock_fprog)); |
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compat_uptr_t ptr; u16 len; if (!access_ok(VERIFY_READ, fprog32, sizeof(*fprog32)) || !access_ok(VERIFY_WRITE, kfprog, sizeof(struct sock_fprog)) || __get_user(len, &fprog32->len) || __get_user(ptr, &fprog32->filter) || __put_user(len, &kfprog->len) || __put_user(compat_ptr(ptr), &kfprog->filter)) return -EFAULT; |
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return sock_setsockopt(sock, level, optname, (char __user *)kfprog, |
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sizeof(struct sock_fprog)); } |
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static int do_set_sock_timeout(struct socket *sock, int level, |
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int optname, char __user *optval, unsigned int optlen) |
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{ struct compat_timeval __user *up = (struct compat_timeval __user *) optval; struct timeval ktime; mm_segment_t old_fs; int err; if (optlen < sizeof(*up)) return -EINVAL; if (!access_ok(VERIFY_READ, up, sizeof(*up)) || __get_user(ktime.tv_sec, &up->tv_sec) || __get_user(ktime.tv_usec, &up->tv_usec)) return -EFAULT; old_fs = get_fs(); set_fs(KERNEL_DS); |
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err = sock_setsockopt(sock, level, optname, (char *) &ktime, sizeof(ktime)); |
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set_fs(old_fs); return err; } |
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static int compat_sock_setsockopt(struct socket *sock, int level, int optname, |
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char __user *optval, unsigned int optlen) |
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{ if (optname == SO_ATTACH_FILTER) return do_set_attach_filter(sock, level, optname, optval, optlen); if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) return do_set_sock_timeout(sock, level, optname, optval, optlen); return sock_setsockopt(sock, level, optname, optval, optlen); } |
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asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, |
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char __user *optval, unsigned int optlen) |
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{ |
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int err; struct socket *sock; |
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if ((sock = sockfd_lookup(fd, &err))!=NULL) { err = security_socket_setsockopt(sock,level,optname); if (err) { sockfd_put(sock); return err; } if (level == SOL_SOCKET) err = compat_sock_setsockopt(sock, level, optname, optval, optlen); else if (sock->ops->compat_setsockopt) err = sock->ops->compat_setsockopt(sock, level, optname, optval, optlen); else err = sock->ops->setsockopt(sock, level, optname, optval, optlen); sockfd_put(sock); } return err; |
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} |
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static int do_get_sock_timeout(struct socket *sock, int level, int optname, |
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char __user *optval, int __user *optlen) { struct compat_timeval __user *up; struct timeval ktime; mm_segment_t old_fs; int len, err; up = (struct compat_timeval __user *) optval; if (get_user(len, optlen)) return -EFAULT; if (len < sizeof(*up)) return -EINVAL; len = sizeof(ktime); old_fs = get_fs(); set_fs(KERNEL_DS); |
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err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len); |
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set_fs(old_fs); if (!err) { if (put_user(sizeof(*up), optlen) || !access_ok(VERIFY_WRITE, up, sizeof(*up)) || __put_user(ktime.tv_sec, &up->tv_sec) || __put_user(ktime.tv_usec, &up->tv_usec)) err = -EFAULT; } return err; } |
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static int compat_sock_getsockopt(struct socket *sock, int level, int optname, |
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char __user *optval, int __user *optlen) { |
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if (optname == SO_RCVTIMEO || optname == SO_SNDTIMEO) return do_get_sock_timeout(sock, level, optname, optval, optlen); return sock_getsockopt(sock, level, optname, optval, optlen); |
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} |
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int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp) { struct compat_timeval __user *ctv = (struct compat_timeval __user*) userstamp; int err = -ENOENT; |
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struct timeval tv; |
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if (!sock_flag(sk, SOCK_TIMESTAMP)) |
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sock_enable_timestamp(sk, SOCK_TIMESTAMP); |
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tv = ktime_to_timeval(sk->sk_stamp); if (tv.tv_sec == -1) |
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return err; |
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if (tv.tv_sec == 0) { sk->sk_stamp = ktime_get_real(); tv = ktime_to_timeval(sk->sk_stamp); } err = 0; if (put_user(tv.tv_sec, &ctv->tv_sec) || put_user(tv.tv_usec, &ctv->tv_usec)) |
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err = -EFAULT; return err; } EXPORT_SYMBOL(compat_sock_get_timestamp); |
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int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp) { struct compat_timespec __user *ctv = (struct compat_timespec __user*) userstamp; int err = -ENOENT; struct timespec ts; if (!sock_flag(sk, SOCK_TIMESTAMP)) |
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sock_enable_timestamp(sk, SOCK_TIMESTAMP); |
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ts = ktime_to_timespec(sk->sk_stamp); if (ts.tv_sec == -1) return err; if (ts.tv_sec == 0) { sk->sk_stamp = ktime_get_real(); ts = ktime_to_timespec(sk->sk_stamp); } err = 0; if (put_user(ts.tv_sec, &ctv->tv_sec) || put_user(ts.tv_nsec, &ctv->tv_nsec)) err = -EFAULT; return err; } EXPORT_SYMBOL(compat_sock_get_timestampns); |
3fdadf7d2 [NET]: {get|set}s... |
480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 |
asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen) { int err; struct socket *sock; if ((sock = sockfd_lookup(fd, &err))!=NULL) { err = security_socket_getsockopt(sock, level, optname); if (err) { sockfd_put(sock); return err; } if (level == SOL_SOCKET) err = compat_sock_getsockopt(sock, level, optname, optval, optlen); else if (sock->ops->compat_getsockopt) err = sock->ops->compat_getsockopt(sock, level, optname, optval, optlen); else err = sock->ops->getsockopt(sock, level, optname, optval, optlen); sockfd_put(sock); } return err; } |
dae502954 ipv4/ipv6 compat:... |
508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 |
struct compat_group_req { __u32 gr_interface; struct __kernel_sockaddr_storage gr_group __attribute__ ((aligned(4))); } __attribute__ ((packed)); struct compat_group_source_req { __u32 gsr_interface; struct __kernel_sockaddr_storage gsr_group __attribute__ ((aligned(4))); struct __kernel_sockaddr_storage gsr_source __attribute__ ((aligned(4))); } __attribute__ ((packed)); struct compat_group_filter { __u32 gf_interface; struct __kernel_sockaddr_storage gf_group __attribute__ ((aligned(4))); __u32 gf_fmode; __u32 gf_numsrc; struct __kernel_sockaddr_storage gf_slist[1] __attribute__ ((aligned(4))); } __attribute__ ((packed)); |
be666e0a1 net: Several clea... |
532 533 |
#define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \ sizeof(struct __kernel_sockaddr_storage)) |
dae502954 ipv4/ipv6 compat:... |
534 535 |
int compat_mc_setsockopt(struct sock *sock, int level, int optname, |
b7058842c net: Make setsock... |
536 537 |
char __user *optval, unsigned int optlen, int (*setsockopt)(struct sock *,int,int,char __user *,unsigned int)) |
dae502954 ipv4/ipv6 compat:... |
538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 |
{ char __user *koptval = optval; int koptlen = optlen; switch (optname) { case MCAST_JOIN_GROUP: case MCAST_LEAVE_GROUP: { struct compat_group_req __user *gr32 = (void *)optval; struct group_req __user *kgr = compat_alloc_user_space(sizeof(struct group_req)); u32 interface; if (!access_ok(VERIFY_READ, gr32, sizeof(*gr32)) || !access_ok(VERIFY_WRITE, kgr, sizeof(struct group_req)) || __get_user(interface, &gr32->gr_interface) || __put_user(interface, &kgr->gr_interface) || copy_in_user(&kgr->gr_group, &gr32->gr_group, sizeof(kgr->gr_group))) return -EFAULT; koptval = (char __user *)kgr; koptlen = sizeof(struct group_req); break; } case MCAST_JOIN_SOURCE_GROUP: case MCAST_LEAVE_SOURCE_GROUP: case MCAST_BLOCK_SOURCE: case MCAST_UNBLOCK_SOURCE: { struct compat_group_source_req __user *gsr32 = (void *)optval; |
be666e0a1 net: Several clea... |
568 |
struct group_source_req __user *kgsr = compat_alloc_user_space( |
dae502954 ipv4/ipv6 compat:... |
569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 |
sizeof(struct group_source_req)); u32 interface; if (!access_ok(VERIFY_READ, gsr32, sizeof(*gsr32)) || !access_ok(VERIFY_WRITE, kgsr, sizeof(struct group_source_req)) || __get_user(interface, &gsr32->gsr_interface) || __put_user(interface, &kgsr->gsr_interface) || copy_in_user(&kgsr->gsr_group, &gsr32->gsr_group, sizeof(kgsr->gsr_group)) || copy_in_user(&kgsr->gsr_source, &gsr32->gsr_source, sizeof(kgsr->gsr_source))) return -EFAULT; koptval = (char __user *)kgsr; koptlen = sizeof(struct group_source_req); break; } case MCAST_MSFILTER: { struct compat_group_filter __user *gf32 = (void *)optval; |
be666e0a1 net: Several clea... |
589 |
struct group_filter __user *kgf; |
dae502954 ipv4/ipv6 compat:... |
590 |
u32 interface, fmode, numsrc; |
be666e0a1 net: Several clea... |
591 |
if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) || |
dae502954 ipv4/ipv6 compat:... |
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 |
__get_user(interface, &gf32->gf_interface) || __get_user(fmode, &gf32->gf_fmode) || __get_user(numsrc, &gf32->gf_numsrc)) return -EFAULT; koptlen = optlen + sizeof(struct group_filter) - sizeof(struct compat_group_filter); if (koptlen < GROUP_FILTER_SIZE(numsrc)) return -EINVAL; kgf = compat_alloc_user_space(koptlen); if (!access_ok(VERIFY_WRITE, kgf, koptlen) || __put_user(interface, &kgf->gf_interface) || __put_user(fmode, &kgf->gf_fmode) || __put_user(numsrc, &kgf->gf_numsrc) || copy_in_user(&kgf->gf_group, &gf32->gf_group, sizeof(kgf->gf_group)) || |
be666e0a1 net: Several clea... |
607 |
(numsrc && copy_in_user(kgf->gf_slist, gf32->gf_slist, |
dae502954 ipv4/ipv6 compat:... |
608 609 610 611 612 613 614 615 616 617 618 619 620 |
numsrc * sizeof(kgf->gf_slist[0])))) return -EFAULT; koptval = (char __user *)kgf; break; } default: break; } return setsockopt(sock, level, optname, koptval, koptlen); } EXPORT_SYMBOL(compat_mc_setsockopt); |
42908c69f net: Add compat s... |
621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 |
int compat_mc_getsockopt(struct sock *sock, int level, int optname, char __user *optval, int __user *optlen, int (*getsockopt)(struct sock *,int,int,char __user *,int __user *)) { struct compat_group_filter __user *gf32 = (void *)optval; struct group_filter __user *kgf; int __user *koptlen; u32 interface, fmode, numsrc; int klen, ulen, err; if (optname != MCAST_MSFILTER) return getsockopt(sock, level, optname, optval, optlen); koptlen = compat_alloc_user_space(sizeof(*koptlen)); if (!access_ok(VERIFY_READ, optlen, sizeof(*optlen)) || __get_user(ulen, optlen)) return -EFAULT; /* adjust len for pad */ klen = ulen + sizeof(*kgf) - sizeof(*gf32); if (klen < GROUP_FILTER_SIZE(0)) return -EINVAL; if (!access_ok(VERIFY_WRITE, koptlen, sizeof(*koptlen)) || __put_user(klen, koptlen)) return -EFAULT; /* have to allow space for previous compat_alloc_user_space, too */ kgf = compat_alloc_user_space(klen+sizeof(*optlen)); if (!access_ok(VERIFY_READ, gf32, __COMPAT_GF0_SIZE) || __get_user(interface, &gf32->gf_interface) || __get_user(fmode, &gf32->gf_fmode) || __get_user(numsrc, &gf32->gf_numsrc) || __put_user(interface, &kgf->gf_interface) || __put_user(fmode, &kgf->gf_fmode) || __put_user(numsrc, &kgf->gf_numsrc) || copy_in_user(&kgf->gf_group,&gf32->gf_group,sizeof(kgf->gf_group))) return -EFAULT; err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen); if (err) return err; if (!access_ok(VERIFY_READ, koptlen, sizeof(*koptlen)) || __get_user(klen, koptlen)) return -EFAULT; ulen = klen - (sizeof(*kgf)-sizeof(*gf32)); if (!access_ok(VERIFY_WRITE, optlen, sizeof(*optlen)) || __put_user(ulen, optlen)) return -EFAULT; if (!access_ok(VERIFY_READ, kgf, klen) || !access_ok(VERIFY_WRITE, gf32, ulen) || __get_user(interface, &kgf->gf_interface) || __get_user(fmode, &kgf->gf_fmode) || __get_user(numsrc, &kgf->gf_numsrc) || __put_user(interface, &gf32->gf_interface) || __put_user(fmode, &gf32->gf_fmode) || __put_user(numsrc, &gf32->gf_numsrc)) return -EFAULT; if (numsrc) { int copylen; klen -= GROUP_FILTER_SIZE(0); copylen = numsrc * sizeof(gf32->gf_slist[0]); if (copylen > klen) copylen = klen; if (copy_in_user(gf32->gf_slist, kgf->gf_slist, copylen)) return -EFAULT; } return err; } EXPORT_SYMBOL(compat_mc_getsockopt); |
dae502954 ipv4/ipv6 compat:... |
699 |
|
1da177e4c Linux-2.6.12-rc2 |
700 701 |
/* Argument list sizes for compat_sys_socketcall */ #define AL(x) ((x) * sizeof(u32)) |
a2e272554 net: Introduce re... |
702 |
static unsigned char nas[20]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), |
1da177e4c Linux-2.6.12-rc2 |
703 |
AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), |
aaca0bdca flag parameters: ... |
704 |
AL(6),AL(2),AL(5),AL(5),AL(3),AL(3), |
a2e272554 net: Introduce re... |
705 |
AL(4),AL(5)}; |
1da177e4c Linux-2.6.12-rc2 |
706 707 708 709 710 711 712 713 714 715 716 |
#undef AL asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags) { return sys_sendmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); } asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, unsigned int flags) { return sys_recvmsg(fd, (struct msghdr __user *)msg, flags | MSG_CMSG_COMPAT); } |
1dacc76d0 net/compat/wext: ... |
717 718 719 720 721 722 723 724 725 726 727 |
asmlinkage long compat_sys_recv(int fd, void __user *buf, size_t len, unsigned flags) { return sys_recv(fd, buf, len, flags | MSG_CMSG_COMPAT); } asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, size_t len, unsigned flags, struct sockaddr __user *addr, int __user *addrlen) { return sys_recvfrom(fd, buf, len, flags | MSG_CMSG_COMPAT, addr, addrlen); } |
a2e272554 net: Introduce re... |
728 729 |
asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, unsigned vlen, unsigned int flags, |
60c2ffd3d net: fix compat_s... |
730 |
struct compat_timespec __user *timeout) |
a2e272554 net: Introduce re... |
731 732 733 |
{ int datagrams; struct timespec ktspec; |
a2e272554 net: Introduce re... |
734 |
|
5b23136bc net: compat_sys_r... |
735 736 737 |
if (timeout == NULL) return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT, NULL); |
de039f02d net: use compat h... |
738 |
if (get_compat_timespec(&ktspec, timeout)) |
a2e272554 net: Introduce re... |
739 740 741 742 |
return -EFAULT; datagrams = __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT, &ktspec); |
de039f02d net: use compat h... |
743 |
if (datagrams > 0 && put_compat_timespec(&ktspec, timeout)) |
a2e272554 net: Introduce re... |
744 745 746 747 |
datagrams = -EFAULT; return datagrams; } |
1da177e4c Linux-2.6.12-rc2 |
748 749 750 751 752 |
asmlinkage long compat_sys_socketcall(int call, u32 __user *args) { int ret; u32 a[6]; u32 a0, a1; |
4768fbcbc [NET]: Fix whites... |
753 |
|
a2e272554 net: Introduce re... |
754 |
if (call < SYS_SOCKET || call > SYS_RECVMMSG) |
1da177e4c Linux-2.6.12-rc2 |
755 756 757 758 759 |
return -EINVAL; if (copy_from_user(a, args, nas[call])) return -EFAULT; a0 = a[0]; a1 = a[1]; |
4768fbcbc [NET]: Fix whites... |
760 |
|
e71a4783a [NET] core: white... |
761 |
switch (call) { |
1da177e4c Linux-2.6.12-rc2 |
762 763 764 765 766 767 768 769 770 771 772 773 774 |
case SYS_SOCKET: ret = sys_socket(a0, a1, a[2]); break; case SYS_BIND: ret = sys_bind(a0, compat_ptr(a1), a[2]); break; case SYS_CONNECT: ret = sys_connect(a0, compat_ptr(a1), a[2]); break; case SYS_LISTEN: ret = sys_listen(a0, a1); break; case SYS_ACCEPT: |
de11defeb reintroduce accept4 |
775 |
ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0); |
1da177e4c Linux-2.6.12-rc2 |
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 |
break; case SYS_GETSOCKNAME: ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2])); break; case SYS_GETPEERNAME: ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2])); break; case SYS_SOCKETPAIR: ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3])); break; case SYS_SEND: ret = sys_send(a0, compat_ptr(a1), a[2], a[3]); break; case SYS_SENDTO: ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]); break; case SYS_RECV: |
1dacc76d0 net/compat/wext: ... |
793 |
ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]); |
1da177e4c Linux-2.6.12-rc2 |
794 795 |
break; case SYS_RECVFROM: |
1dacc76d0 net/compat/wext: ... |
796 797 |
ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), compat_ptr(a[5])); |
1da177e4c Linux-2.6.12-rc2 |
798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 |
break; case SYS_SHUTDOWN: ret = sys_shutdown(a0,a1); break; case SYS_SETSOCKOPT: ret = compat_sys_setsockopt(a0, a1, a[2], compat_ptr(a[3]), a[4]); break; case SYS_GETSOCKOPT: ret = compat_sys_getsockopt(a0, a1, a[2], compat_ptr(a[3]), compat_ptr(a[4])); break; case SYS_SENDMSG: ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]); break; case SYS_RECVMSG: ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]); break; |
a2e272554 net: Introduce re... |
816 817 818 819 |
case SYS_RECVMMSG: ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4])); break; |
de11defeb reintroduce accept4 |
820 821 |
case SYS_ACCEPT4: ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]); |
aaca0bdca flag parameters: ... |
822 |
break; |
1da177e4c Linux-2.6.12-rc2 |
823 824 825 826 827 828 |
default: ret = -EINVAL; break; } return ret; } |