shadow/lib/sssd.c
Christian Göttsche 2eee4c67f5 sssd: skip flushing if executable does not exist
Avoid unnecessary syslog output, like:

    Apr 01 13:35:09 dlaptop userdel[45872]: userdel: sss_cache exited with status 1
    Apr 01 13:35:09 dlaptop userdel[45872]: userdel: Failed to flush the sssd cache.
2023-04-03 13:05:30 +02:00

84 lines
2.0 KiB
C

/* Author: Peter Vrabec <pvrabec@redhat.com> */
#include <config.h>
#ifdef USE_SSSD
#include <stdio.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/types.h>
#include "alloc.h"
#include "exitcodes.h"
#include "defines.h"
#include "prototypes.h"
#include "sssd.h"
#include "shadowlog_internal.h"
#define MSG_SSSD_FLUSH_CACHE_FAILED "%s: Failed to flush the sssd cache."
int sssd_flush_cache (int dbflags)
{
int status, code, rv;
const char *cmd = "/usr/sbin/sss_cache";
struct stat sb;
char *sss_cache_args = NULL;
const char *spawnedArgs[] = {"sss_cache", NULL, NULL};
const char *spawnedEnv[] = {NULL};
int i = 0;
rv = stat(cmd, &sb);
if (rv == -1 && errno == ENOENT)
return 0;
sss_cache_args = MALLOCARRAY(4, char);
if (sss_cache_args == NULL) {
return -1;
}
sss_cache_args[i++] = '-';
if (dbflags & SSSD_DB_PASSWD) {
sss_cache_args[i++] = 'U';
}
if (dbflags & SSSD_DB_GROUP) {
sss_cache_args[i++] = 'G';
}
sss_cache_args[i++] = '\0';
if (i == 2) {
/* Neither passwd nor group, nothing to do */
free(sss_cache_args);
return 0;
}
spawnedArgs[1] = sss_cache_args;
rv = run_command (cmd, spawnedArgs, spawnedEnv, &status);
free(sss_cache_args);
if (rv != 0) {
/* run_command writes its own more detailed message. */
SYSLOG ((LOG_WARN, MSG_SSSD_FLUSH_CACHE_FAILED, shadow_progname));
return -1;
}
code = WEXITSTATUS (status);
if (!WIFEXITED (status)) {
SYSLOG ((LOG_WARN, "%s: sss_cache did not terminate normally (signal %d)",
shadow_progname, WTERMSIG (status)));
return -1;
} else if (code == E_CMD_NOTFOUND) {
/* sss_cache is not installed, or it is installed but uses an
interpreter that is missing. Probably the former. */
return 0;
} else if (code != 0) {
SYSLOG ((LOG_WARN, "%s: sss_cache exited with status %d", shadow_progname, code));
SYSLOG ((LOG_WARN, MSG_SSSD_FLUSH_CACHE_FAILED, shadow_progname));
return -1;
}
return 0;
}
#else /* USE_SSSD */
extern int ISO_C_forbids_an_empty_translation_unit;
#endif /* USE_SSSD */