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| author | Christoph Hellwig <hch@lst.de> | 2020-07-17 08:23:11 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:16:40 -0700 |
| commit | 4a3672993f95c5f2ff0cf0951ba9a712d941a248 (patch) | |
| tree | 20d5aab31ede965058485f8bf570820738412744 /net/socket.c | |
| parent | a06d30ae7af492497ffbca6abf1621d508b8fcaa (diff) | |
| download | linux-4a3672993f95c5f2ff0cf0951ba9a712d941a248.tar.gz linux-4a3672993f95c5f2ff0cf0951ba9a712d941a248.tar.bz2 linux-4a3672993f95c5f2ff0cf0951ba9a712d941a248.zip | |
net: streamline __sys_setsockopt
Return early when sockfd_lookup_light fails to reduce a level of
indentation for most of the function body.
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.c | 57 |
1 files changed, 27 insertions, 30 deletions
diff --git a/net/socket.c b/net/socket.c index 770503c4ca76..49a6daf0293b 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2107,43 +2107,40 @@ static int __sys_setsockopt(int fd, int level, int optname, return -EINVAL; sock = sockfd_lookup_light(fd, &err, &fput_needed); - if (sock != NULL) { - err = security_socket_setsockopt(sock, level, optname); - if (err) - goto out_put; + if (!sock) + return err; - err = BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock->sk, &level, - &optname, optval, &optlen, - &kernel_optval); + err = security_socket_setsockopt(sock, level, optname); + if (err) + goto out_put; - if (err < 0) { - goto out_put; - } else if (err > 0) { - err = 0; - goto out_put; - } + err = BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock->sk, &level, &optname, + optval, &optlen, &kernel_optval); + if (err < 0) + goto out_put; + if (err > 0) { + err = 0; + goto out_put; + } - if (kernel_optval) { - set_fs(KERNEL_DS); - optval = (char __user __force *)kernel_optval; - } + if (kernel_optval) { + set_fs(KERNEL_DS); + optval = (char __user __force *)kernel_optval; + } - if (level == SOL_SOCKET && !sock_use_custom_sol_socket(sock)) - err = - sock_setsockopt(sock, level, optname, optval, + if (level == SOL_SOCKET && !sock_use_custom_sol_socket(sock)) + err = sock_setsockopt(sock, level, optname, optval, optlen); + else + err = sock->ops->setsockopt(sock, level, optname, optval, optlen); - else - err = - sock->ops->setsockopt(sock, level, optname, optval, - optlen); - if (kernel_optval) { - set_fs(oldfs); - kfree(kernel_optval); - } -out_put: - fput_light(sock->file, fput_needed); + if (kernel_optval) { + set_fs(oldfs); + kfree(kernel_optval); } + +out_put: + fput_light(sock->file, fput_needed); return err; } |