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authorChristoph Hellwig <hch@lst.de>2020-07-17 09:23:15 +0300
committerDavid S. Miller <davem@davemloft.net>2020-07-20 04:16:40 +0300
commit55db9c0e853421fa71cac5e6855898601f78a1f5 (patch)
treea1d10351c2e9a1c86cb0b481a98ada9745589195 /net/socket.c
parent8c918ffbbad49454ed26c53eb1b90bf98bb5e394 (diff)
downloadlinux-55db9c0e853421fa71cac5e6855898601f78a1f5.tar.xz
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/socket.c')
-rw-r--r--net/socket.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/net/socket.c b/net/socket.c
index b79376b17b45..dec345982abb 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2094,9 +2094,8 @@ static bool sock_use_custom_sol_socket(const struct socket *sock)
* 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.
*/
-
-static int __sys_setsockopt(int fd, int level, int optname,
- char __user *optval, int optlen)
+int __sys_setsockopt(int fd, int level, int optname, char __user *optval,
+ int optlen)
{
mm_segment_t oldfs = get_fs();
char *kernel_optval = NULL;
@@ -2114,8 +2113,10 @@ static int __sys_setsockopt(int fd, int level, int optname,
if (err)
goto out_put;
- err = BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock->sk, &level, &optname,
- optval, &optlen, &kernel_optval);
+ if (!in_compat_syscall())
+ err = BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock->sk, &level, &optname,
+ optval, &optlen,
+ &kernel_optval);
if (err < 0)
goto out_put;
if (err > 0) {
@@ -2154,9 +2155,8 @@ SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname,
* 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.
*/
-
-static int __sys_getsockopt(int fd, int level, int optname,
- char __user *optval, int __user *optlen)
+int __sys_getsockopt(int fd, int level, int optname, char __user *optval,
+ int __user *optlen)
{
int err, fput_needed;
struct socket *sock;
@@ -2170,7 +2170,8 @@ static int __sys_getsockopt(int fd, int level, int optname,
if (err)
goto out_put;
- max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen);
+ if (!in_compat_syscall())
+ max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen);
if (level == SOL_SOCKET)
err = sock_getsockopt(sock, level, optname, optval, optlen);
@@ -2178,8 +2179,10 @@ static int __sys_getsockopt(int fd, int level, int optname,
err = sock->ops->getsockopt(sock, level, optname, optval,
optlen);
- err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname, optval,
- optlen, max_optlen, err);
+ if (!in_compat_syscall())
+ err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname,
+ optval, optlen, max_optlen,
+ err);
out_put:
fput_light(sock->file, fput_needed);
return err;