asl_object_t
asl_open(const char *ident, const char *facility, uint32_t opts)
{
asl_client_t *asl = asl_client_open(ident, facility, opts);
if (asl == NULL) return NULL;
_asl_global_init(0);
if (!(opts & ASL_OPT_NO_REMOTE)) _asl_notify_open(1);
return (asl_object_t)asl;
}
__private_extern__ asl_client_t *
_asl_open_default()
{
static dispatch_once_t once;
dispatch_once(&once, ^{
/*
* Do a sleight-of-hand with ASL_OPT_NO_REMOTE to avoid a deadlock
* since asl_open(xxx, yyy, 0) calls _asl_notify_open(1)
* which locks _asl_global.lock.
*/
_asl_global.asl = (asl_client_t *)asl_open(NULL, NULL, ASL_OPT_NO_REMOTE);
/* Reset options to clear ASL_OPT_NO_REMOTE bit */
if (_asl_global.asl != NULL) _asl_global.asl->options = 0;
/* Now call _asl_notify_open(0) to finish the work */
_asl_notify_open(0);
});
aslclient
asl_open(const char *ident, const char *facility, uint32_t opts)
{
char *name, *x;
asl_client_t *asl;
asl = (asl_client_t *)calloc(1, sizeof(asl_client_t));
if (asl == NULL)
{
errno = ENOMEM;
return NULL;
}
asl->options = opts;
asl->sock = -1;
_asl_global_init();
asl->pid = getpid();
asl->uid = getuid();
asl->gid = getgid();
asl->filter = ASL_FILTER_MASK_UPTO(ASL_LEVEL_NOTICE);
if (ident != NULL)
{
asl->name = strdup(ident);
if (asl->name == NULL)
{
if (asl->sock >= 0) close(asl->sock);
free(asl);
return NULL;
}
}
else
{
name = *(*_NSGetArgv());
if (name != NULL)
{
x = strrchr(name, '/');
if (x != NULL) x++;
else x = name;
asl->name = strdup(x);
if (asl->name == NULL)
{
if (asl->sock >= 0) close(asl->sock);
free(asl);
return NULL;
}
}
}
asl->facility = NULL;
if (facility != NULL) asl->facility = strdup(facility);
else asl->facility = strdup(asl_syslog_faciliy_num_to_name(LOG_USER));
if (asl->facility == NULL)
{
if (asl->sock >= 0) close(asl->sock);
if (asl->name != NULL) free(asl->name);
free(asl);
return NULL;
}
if (!(asl->options & ASL_OPT_NO_REMOTE)) _asl_notify_open(1);
if (asl->options & ASL_OPT_STDERR) asl_add_output((aslclient)asl, fileno(stderr), ASL_MSG_FMT_STD, ASL_TIME_FMT_LCL, ASL_ENCODE_SAFE);
asl->refcount = 1;
return (aslclient)asl;
}
