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/*
SSSD
Calls to manage the preauth indicator file
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2018 Red Hat
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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "util/util.h"
#include "sss_client/sss_cli.h"
static void cleanup_preauth_indicator(void)
{
int ret;
ret = unlink(PAM_PREAUTH_INDICATOR);
if (ret != EOK && errno != ENOENT) {
ret = errno;
DEBUG(SSSDBG_OP_FAILURE,
"Failed to remove preauth indicator file [%s] %d [%s].\n",
PAM_PREAUTH_INDICATOR, ret, sss_strerror(ret));
}
}
errno_t create_preauth_indicator(void)
{
TALLOC_CTX *tmp_ctx;
errno_t ret;
int fd;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
DEBUG(SSSDBG_OP_FAILURE, "talloc_new failed.\n");
return ENOMEM;
}
fd = open(PAM_PREAUTH_INDICATOR, O_CREAT | O_EXCL | O_WRONLY | O_NOFOLLOW,
0644);
if (fd < 0) {
if (errno != EEXIST) {
DEBUG(SSSDBG_OP_FAILURE,
"Failed to create preauth indicator file [%s].\n",
PAM_PREAUTH_INDICATOR);
ret = EOK;
goto done;
}
DEBUG(SSSDBG_TRACE_FUNC,
"Preauth indicator file [%s] already exists. Continuing.\n",
PAM_PREAUTH_INDICATOR);
} else {
close(fd);
}
ret = atexit(cleanup_preauth_indicator);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "atexit failed. Continuing.\n");
}
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
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