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tools: do not change signals for memlocked daemons

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This commit is contained in:
Zdenek Kabelac 2015-10-22 10:45:58 +02:00
parent d2c4ce254b
commit 075f85dcb5
1 changed files with 12 additions and 0 deletions
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12
lib/misc/lvm-signal.c
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@ -15,6 +15,7 @@
#include "lib.h" #include "lib.h"
#include "lvm-signal.h" #include "lvm-signal.h"
#include "memlock.h"
#include <signal.h> #include <signal.h>
@ -60,6 +61,8 @@ void sigint_allow(void)
struct sigaction handler; struct sigaction handler;
sigset_t sigs; sigset_t sigs;
if (memlock_count_daemon())
return;
/* /*
* Do not overwrite the backed-up handler data - * Do not overwrite the backed-up handler data -
* just increase nesting count. * just increase nesting count.
@ -91,6 +94,9 @@ void sigint_allow(void)
void sigint_restore(void) void sigint_restore(void)
{ {
if (memlock_count_daemon())
return;
if (!_handler_installed || if (!_handler_installed ||
--_handler_installed >= MAX_SIGINTS) --_handler_installed >= MAX_SIGINTS)
return; return;
@ -112,6 +118,9 @@ void block_signals(uint32_t flags __attribute__((unused)))
{ {
sigset_t set; sigset_t set;
if (memlock_count_daemon())
return;
if (_signals_blocked) if (_signals_blocked)
return; return;
@ -130,6 +139,9 @@ void block_signals(uint32_t flags __attribute__((unused)))
void unblock_signals(void) void unblock_signals(void)
{ {
if (memlock_count_daemon())
return;
/* Don't unblock signals while any locks are held */ /* Don't unblock signals while any locks are held */
if (!_signals_blocked) if (!_signals_blocked)
return; return;