Using the net-internal helper __compat_sys_setsockopt() allows us to avoid the internal calls to the compat_sys_setsockopt() syscall. This patch is part of a series which removes in-kernel calls to syscalls. On this basis, the syscall entry path can be streamlined. For details, see http://lkml.kernel.org/r/20180325162527.GA17492@xxxxxxxxxxxxxxxxxxxxxxxxxx Cc: David S. Miller <davem@xxxxxxxxxxxxx> Cc: netdev@xxxxxxxxxxxxxxx Signed-off-by: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx> --- net/compat.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/net/compat.c b/net/compat.c index 513adc8d0e0f..75bfcbbb2e3e 100644 --- a/net/compat.c +++ b/net/compat.c @@ -383,8 +383,8 @@ static int compat_sock_setsockopt(struct socket *sock, int level, int optname, return sock_setsockopt(sock, level, optname, optval, optlen); } -COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, - char __user *, optval, unsigned int, optlen) +static int __compat_sys_setsockopt(int fd, int level, int optname, + char __user *optval, unsigned int optlen) { int err; struct socket *sock = sockfd_lookup(fd, &err); @@ -410,6 +410,12 @@ COMPAT_SYSCALL_DEFINE5(setsockopt, int, fd, int, level, int, optname, 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 do_get_sock_timeout(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { @@ -864,8 +870,8 @@ 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 = __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], -- 2.16.3
