diff options
Diffstat (limited to 'net/compat.c')
| -rw-r--r-- | net/compat.c | 46 |
1 files changed, 21 insertions, 25 deletions
diff --git a/net/compat.c b/net/compat.c index 3236b4167a32..5cfd26a0006f 100644 --- a/net/compat.c +++ b/net/compat.c @@ -31,10 +31,10 @@ #include <asm/uaccess.h> #include <net/compat.h> -ssize_t get_compat_msghdr(struct msghdr *kmsg, - struct compat_msghdr __user *umsg, - struct sockaddr __user **save_addr, - struct iovec **iov) +int get_compat_msghdr(struct msghdr *kmsg, + struct compat_msghdr __user *umsg, + struct sockaddr __user **save_addr, + struct iovec **iov) { compat_uptr_t uaddr, uiov, tmp3; compat_size_t nr_segs; @@ -49,6 +49,13 @@ ssize_t get_compat_msghdr(struct msghdr *kmsg, __get_user(kmsg->msg_controllen, &umsg->msg_controllen) || __get_user(kmsg->msg_flags, &umsg->msg_flags)) return -EFAULT; + + if (!uaddr) + kmsg->msg_namelen = 0; + + if (kmsg->msg_namelen < 0) + return -EINVAL; + if (kmsg->msg_namelen > sizeof(struct sockaddr_storage)) kmsg->msg_namelen = sizeof(struct sockaddr_storage); kmsg->msg_control = compat_ptr(tmp3); @@ -72,13 +79,11 @@ ssize_t get_compat_msghdr(struct msghdr *kmsg, if (nr_segs > UIO_MAXIOV) return -EMSGSIZE; - err = compat_rw_copy_check_uvector(save_addr ? READ : WRITE, - compat_ptr(uiov), nr_segs, - UIO_FASTIOV, *iov, iov); - if (err >= 0) - iov_iter_init(&kmsg->msg_iter, save_addr ? READ : WRITE, - *iov, nr_segs, err); - return err; + kmsg->msg_iocb = NULL; + + return compat_import_iovec(save_addr ? READ : WRITE, + compat_ptr(uiov), nr_segs, + UIO_FASTIOV, iov, &kmsg->msg_iter); } /* Bleech... */ @@ -508,25 +513,25 @@ COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname, struct compat_group_req { __u32 gr_interface; struct __kernel_sockaddr_storage gr_group - __attribute__ ((aligned(4))); + __aligned(4); } __packed; struct compat_group_source_req { __u32 gsr_interface; struct __kernel_sockaddr_storage gsr_group - __attribute__ ((aligned(4))); + __aligned(4); struct __kernel_sockaddr_storage gsr_source - __attribute__ ((aligned(4))); + __aligned(4); } __packed; struct compat_group_filter { __u32 gf_interface; struct __kernel_sockaddr_storage gf_group - __attribute__ ((aligned(4))); + __aligned(4); __u32 gf_fmode; __u32 gf_numsrc; struct __kernel_sockaddr_storage gf_slist[1] - __attribute__ ((aligned(4))); + __aligned(4); } __packed; #define __COMPAT_GF0_SIZE (sizeof(struct compat_group_filter) - \ @@ -711,24 +716,18 @@ static unsigned char nas[21] = { COMPAT_SYSCALL_DEFINE3(sendmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags) { - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; return __sys_sendmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT); } COMPAT_SYSCALL_DEFINE4(sendmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, unsigned int, vlen, unsigned int, flags) { - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; return __sys_sendmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT); } COMPAT_SYSCALL_DEFINE3(recvmsg, int, fd, struct compat_msghdr __user *, msg, unsigned int, flags) { - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; return __sys_recvmsg(fd, (struct user_msghdr __user *)msg, flags | MSG_CMSG_COMPAT); } @@ -751,9 +750,6 @@ COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg, int datagrams; struct timespec ktspec; - if (flags & MSG_CMSG_COMPAT) - return -EINVAL; - if (timeout == NULL) return __sys_recvmmsg(fd, (struct mmsghdr __user *)mmsg, vlen, flags | MSG_CMSG_COMPAT, NULL); |