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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-16 16:58:54 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:15:18 +0200 |
| commit | 73ee3eafd5d1037af9762d28d17611bcf64834d6 (patch) | |
| tree | e61cae54b3074bcf0f9bdf4501fb49a792b4f1ba /net/compat.c | |
| parent | fd4e82f5b8612ce90bf85f062f2b7954044a1db7 (diff) | |
| download | lwn-73ee3eafd5d1037af9762d28d17611bcf64834d6.tar.gz lwn-73ee3eafd5d1037af9762d28d17611bcf64834d6.zip | |
net: socket: add __compat_sys_setsockopt() helper; remove in-kernel call to compat syscall
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@light.dominikbrodowski.net
Cc: David S. Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'net/compat.c')
| -rw-r--r-- | net/compat.c | 14 |
1 files 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], |