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eliminate atomics in syslog setlogmask function

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This commit is contained in:
Rich Felker 2015-03-04 09:44:43 -05:00
parent 7a81fe3710
commit 6de071a0be
1 changed files with 6 additions and 4 deletions
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10
src/misc/syslog.c
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@ -10,19 +10,21 @@
#include <errno.h> #include <errno.h>
#include <fcntl.h> #include <fcntl.h>
#include "libc.h" #include "libc.h"
#include "atomic.h"
static volatile int lock[2]; static volatile int lock[2];
static char log_ident[32]; static char log_ident[32];
static int log_opt; static int log_opt;
static int log_facility = LOG_USER; static int log_facility = LOG_USER;
static volatile int log_mask = 0xff; static int log_mask = 0xff;
static int log_fd = -1; static int log_fd = -1;
int setlogmask(int maskpri) int setlogmask(int maskpri)
{ {
if (maskpri) return a_swap(&log_mask, maskpri); LOCK(lock);
else return log_mask; int ret = log_mask;
if (maskpri) log_mask = maskpri;
UNLOCK(lock);
return ret;
} }
static const struct { static const struct {