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authorChristoph Hellwig <hch@lst.de>2020-07-17 08:23:15 +0200
committerDavid S. Miller <davem@davemloft.net>2020-07-19 18:16:40 -0700
commit55db9c0e853421fa71cac5e6855898601f78a1f5 (patch)
treea1d10351c2e9a1c86cb0b481a98ada9745589195 /net/compat.c
parent8c918ffbbad49454ed26c53eb1b90bf98bb5e394 (diff)
downloadlinux-55db9c0e853421fa71cac5e6855898601f78a1f5.tar.bz2
net: remove compat_sys_{get,set}sockopt
Now that the ->compat_{get,set}sockopt proto_ops methods are gone there is no good reason left to keep the compat syscalls separate. This fixes the odd use of unsigned int for the compat_setsockopt optlen and the missing sock_use_custom_sol_socket. It would also easily allow running the eBPF hooks for the compat syscalls, but such a large change in behavior does not belong into a consolidation patch like this one. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/compat.c')
-rw-r--r--net/compat.c79
1 files changed, 3 insertions, 76 deletions
diff --git a/net/compat.c b/net/compat.c
index 3e6c2c5ff260..091875bd6210 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -335,77 +335,6 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
__scm_destroy(scm);
}
-static int __compat_sys_setsockopt(int fd, int level, int optname,
- char __user *optval, unsigned int optlen)
-{
- int err;
- struct socket *sock;
-
- if (optlen > INT_MAX)
- return -EINVAL;
-
- sock = sockfd_lookup(fd, &err);
- if (sock) {
- err = security_socket_setsockopt(sock, level, optname);
- if (err) {
- sockfd_put(sock);
- return err;
- }
-
- if (level == SOL_SOCKET)
- err = 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;
-}
-
-COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
- char __user *, optval, unsigned int, optlen)
-{
- return __compat_sys_setsockopt(fd, level, optname, optval, optlen);
-}
-
-static int __compat_sys_getsockopt(int fd, int level, int optname,
- char __user *optval,
- int __user *optlen)
-{
- int err;
- struct socket *sock = sockfd_lookup(fd, &err);
-
- if (sock) {
- err = security_socket_getsockopt(sock, level, optname);
- if (err) {
- sockfd_put(sock);
- return err;
- }
-
- if (level == SOL_SOCKET)
- err = 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;
-}
-
-COMPAT_SYSCALL_DEFINE5(getsockopt, int, fd, int, level, int, optname,
- char __user *, optval, int __user *, optlen)
-{
- return __compat_sys_getsockopt(fd, level, optname, optval, optlen);
-}
-
/* Argument list sizes for compat_sys_socketcall */
#define AL(x) ((x) * sizeof(u32))
static unsigned char nas[21] = {
@@ -565,13 +494,11 @@ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
ret = __sys_shutdown(a0, a1);
break;
case SYS_SETSOCKOPT:
- ret = __compat_sys_setsockopt(a0, a1, a[2],
- compat_ptr(a[3]), a[4]);
+ ret = __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]));
+ ret = __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]);