taint: convert to indexed initialization
This converts to using indexed initializers instead of comments, adds a
comment on why the taint flags can't be an enum, and make sure that no
one forgets to update the taint_flags when adding new bits.
Link: http://lkml.kernel.org/r/1519084390-43867-2-git-send-email-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/panic.c b/kernel/panic.c
index 6c3b08c..af4cfa8 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -308,23 +308,23 @@
* is being removed anyway.
*/
const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = {
- { 'P', 'G', true }, /* TAINT_PROPRIETARY_MODULE */
- { 'F', ' ', true }, /* TAINT_FORCED_MODULE */
- { 'S', ' ', false }, /* TAINT_CPU_OUT_OF_SPEC */
- { 'R', ' ', false }, /* TAINT_FORCED_RMMOD */
- { 'M', ' ', false }, /* TAINT_MACHINE_CHECK */
- { 'B', ' ', false }, /* TAINT_BAD_PAGE */
- { 'U', ' ', false }, /* TAINT_USER */
- { 'D', ' ', false }, /* TAINT_DIE */
- { 'A', ' ', false }, /* TAINT_OVERRIDDEN_ACPI_TABLE */
- { 'W', ' ', false }, /* TAINT_WARN */
- { 'C', ' ', true }, /* TAINT_CRAP */
- { 'I', ' ', false }, /* TAINT_FIRMWARE_WORKAROUND */
- { 'O', ' ', true }, /* TAINT_OOT_MODULE */
- { 'E', ' ', true }, /* TAINT_UNSIGNED_MODULE */
- { 'L', ' ', false }, /* TAINT_SOFTLOCKUP */
- { 'K', ' ', true }, /* TAINT_LIVEPATCH */
- { 'X', ' ', true }, /* TAINT_AUX */
+ [ TAINT_PROPRIETARY_MODULE ] = { 'P', 'G', true },
+ [ TAINT_FORCED_MODULE ] = { 'F', ' ', true },
+ [ TAINT_CPU_OUT_OF_SPEC ] = { 'S', ' ', false },
+ [ TAINT_FORCED_RMMOD ] = { 'R', ' ', false },
+ [ TAINT_MACHINE_CHECK ] = { 'M', ' ', false },
+ [ TAINT_BAD_PAGE ] = { 'B', ' ', false },
+ [ TAINT_USER ] = { 'U', ' ', false },
+ [ TAINT_DIE ] = { 'D', ' ', false },
+ [ TAINT_OVERRIDDEN_ACPI_TABLE ] = { 'A', ' ', false },
+ [ TAINT_WARN ] = { 'W', ' ', false },
+ [ TAINT_CRAP ] = { 'C', ' ', true },
+ [ TAINT_FIRMWARE_WORKAROUND ] = { 'I', ' ', false },
+ [ TAINT_OOT_MODULE ] = { 'O', ' ', true },
+ [ TAINT_UNSIGNED_MODULE ] = { 'E', ' ', true },
+ [ TAINT_SOFTLOCKUP ] = { 'L', ' ', false },
+ [ TAINT_LIVEPATCH ] = { 'K', ' ', true },
+ [ TAINT_AUX ] = { 'X', ' ', true },
};
/**
@@ -354,6 +354,8 @@
{
static char buf[TAINT_FLAGS_COUNT + sizeof("Tainted: ")];
+ BUILD_BUG_ON(ARRAY_SIZE(taint_flags) != TAINT_FLAGS_COUNT);
+
if (tainted_mask) {
char *s;
int i;