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authorUlrich Drepper <drepper@redhat.com>2008-07-23 21:29:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:29 -0700
commite38b36f325153eaadd1c2a7abc5762079233e540 (patch)
tree92cfc9855e41c5328d91456f5e373c00ecb8d383 /net/socket.c
parent510df2dd482496083e1c3b1a8c9b6afd5fa4c7d7 (diff)
downloadlinux-e38b36f325153eaadd1c2a7abc5762079233e540.tar.bz2
flag parameters: check magic constants
This patch adds test that ensure the boundary conditions for the various constants introduced in the previous patches is met. No code is generated. [akpm@linux-foundation.org: fix alpha] Signed-off-by: Ulrich Drepper <drepper@redhat.com> Acked-by: Davide Libenzi <davidel@xmailserver.org> Cc: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/socket.c b/net/socket.c
index 31105f9048a8..1310a82cbba7 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1222,6 +1222,12 @@ asmlinkage long sys_socket(int family, int type, int protocol)
struct socket *sock;
int flags;
+ /* Check the SOCK_* constants for consistency. */
+ BUILD_BUG_ON(SOCK_CLOEXEC != O_CLOEXEC);
+ BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK);
+ BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK);
+ BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK);
+
flags = type & ~SOCK_TYPE_MASK;
if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
return -EINVAL;