From 2950fa9d3291b90e9b7663b6a409ea37a97a5e35 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Sun, 7 Apr 2013 16:55:23 +0800 Subject: kernel: audit: beautify code, for extern function, better to check its parameters by itself __audit_socketcall is an extern function. better to check its parameters by itself. also can return error code, when fail (find invalid parameters). also use macro instead of real hard code number also give related comments for it. Signed-off-by: Chen Gang [eparis: fix the return value when !CONFIG_AUDIT] Signed-off-by: Eric Paris --- net/socket.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'net/socket.c') diff --git a/net/socket.c b/net/socket.c index 2ca51c719ef9..1bbc37b7a312 100644 --- a/net/socket.c +++ b/net/socket.c @@ -2436,7 +2436,7 @@ static const unsigned char nargs[21] = { SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) { - unsigned long a[6]; + unsigned long a[AUDITSC_ARGS]; unsigned long a0, a1; int err; unsigned int len; @@ -2452,7 +2452,9 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args) if (copy_from_user(a, args, len)) return -EFAULT; - audit_socketcall(nargs[call] / sizeof(unsigned long), a); + err = audit_socketcall(nargs[call] / sizeof(unsigned long), a); + if (err) + return err; a0 = a[0]; a1 = a[1]; -- cgit