Allow reading tainted flag as user
The commit 34f5a39899f3f3e815da64f48ddb72942d86c366 restricted reading
of the tainted value. The attached patch changes this back to a
write-only check and restores the read behaviour of older versions.
Signed-off-by: Bastian Blank <bastian@waldi.eu.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 1b255df..c904748 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1676,7 +1676,7 @@
{
int op;
- if (!capable(CAP_SYS_ADMIN))
+ if (write && !capable(CAP_SYS_ADMIN))
return -EPERM;
op = OP_OR;