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include/linux/signal.h: mark expected switch fall-throughs 

In preparation to enabling -Wimplicit-fallthrough, mark switch cases where
we are expecting to fall through.

Link: http://lkml.kernel.org/r/20181013114847.GA3160@embeddedor.com
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Gustavo A. R. Silva 2018-10-30 15:07:10 -07:00 committed by Linus Torvalds
parent 2e58f57d85
commit 3819ddec1f
1 changed files with 6 additions and 0 deletions
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6
include/linux/signal.h
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@ -129,9 +129,11 @@ static inline void name(sigset_t *r, const sigset_t *a, const sigset_t *b) \
b3 = b->sig[3]; b2 = b->sig[2]; \
r->sig[3] = op(a3, b3); \
r->sig[2] = op(a2, b2); \
/* fall through */ \
case 2: \
a1 = a->sig[1]; b1 = b->sig[1]; \
r->sig[1] = op(a1, b1); \
/* fall through */ \
case 1: \
a0 = a->sig[0]; b0 = b->sig[0]; \
r->sig[0] = op(a0, b0); \
@ -161,7 +163,9 @@ static inline void name(sigset_t *set) \
switch (_NSIG_WORDS) { \
case 4: set->sig[3] = op(set->sig[3]); \
set->sig[2] = op(set->sig[2]); \
/* fall through */ \
case 2: set->sig[1] = op(set->sig[1]); \
/* fall through */ \
case 1: set->sig[0] = op(set->sig[0]); \
break; \
default: \
@ -182,6 +186,7 @@ static inline void sigemptyset(sigset_t *set)
memset(set, 0, sizeof(sigset_t));
break;
case 2: set->sig[1] = 0;
/* fall through */
case 1: set->sig[0] = 0;
break;
}
@ -194,6 +199,7 @@ static inline void sigfillset(sigset_t *set)
memset(set, -1, sizeof(sigset_t));
break;
case 2: set->sig[1] = -1;
/* fall through */
case 1: set->sig[0] = -1;
break;
}