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/*
SSSD
nscd.c
Copyright (C) Jakub Hrozek <jhrozek@redhat.com> 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <talloc.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "config.h"
#include "util/util.h"
#include "tools/tools_util.h"
#ifndef NSCD_RELOAD_ARG
#define NSCD_RELOAD_ARG "-i"
#endif
#if defined(NSCD_PATH) && defined(HAVE_NSCD)
int flush_nscd_cache(TALLOC_CTX *mem_ctx, enum nscd_db flush_db)
{
const char *service;
pid_t nscd_pid;
int ret, status;
switch(flush_db) {
case NSCD_DB_PASSWD:
service = "passwd";
break;
case NSCD_DB_GROUP:
service = "group";
break;
default:
DEBUG(1, ("Unknown nscd database\n"));
ret = EINVAL;
goto done;
}
nscd_pid = fork();
switch (nscd_pid) {
case 0:
execl(NSCD_PATH, "nscd", NSCD_RELOAD_ARG, service, NULL);
/* if this returns it is an error */
DEBUG(1, ("execl(3) failed: %d(%s)\n", errno, strerror(errno)));
exit(errno);
case -1:
DEBUG(1, ("fork failed\n"));
ret = EFAULT;
break;
default:
do {
errno = 0;
ret = waitpid(nscd_pid, &status, 0);
} while (ret == -1 && errno == EINTR);
if (ret == 0) {
if (WIFEXITED(status)) {
ret = WEXITSTATUS(status);
if (ret > 0) {
/* The flush fails if nscd is not running, so do not care
* about the return code */
DEBUG(8, ("Error flushing cache, is nscd running?\n"));
}
}
} else {
DEBUG(5, ("Failed to wait for children %d\n", nscd_pid));
ret = EIO;
}
}
done:
return ret;
}
#else /* defined(NSCD_PATH) && defined(HAVE_NSCD) */
int flush_nscd_cache(TALLOC_CTX *mem_ctx, enum nscd_db flush_db)
{
return EOK;
}
#endif
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