/*
SSSD
io.c
Authors:
Lukas Slebodnik <lslebodn@redhat.com>
Copyright (C) 2012 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 "config.h"
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "util/io.h"
/* CAUTION:
* This file have to be minimalist and cannot include DEBUG macros
* or header file util.h.
*/
int sss_open_cloexec(const char *pathname, int flags, int *ret)
{
int fd;
int oflags;
oflags = flags;
#ifdef O_CLOEXEC
oflags |= O_CLOEXEC;
#endif
errno = 0;
fd = open(pathname, oflags);
if (fd == -1) {
if (ret) {
*ret = errno;
}
return -1;
}
#ifndef O_CLOEXEC
int v;
v = fcntl(fd, F_GETFD, 0);
/* we ignore an error, it's not fatal and there is nothing we
* can do about it anyways */
(void)fcntl(fd, F_SETFD, v | FD_CLOEXEC);
#endif
return fd;
}
int sss_openat_cloexec(int dir_fd, const char *pathname, int flags, int *ret)
{
int fd;
int oflags;
oflags = flags;
#ifdef O_CLOEXEC
oflags |= O_CLOEXEC;
#endif
errno = 0;
fd = openat(dir_fd, pathname, oflags);
if (fd == -1) {
if (ret) {
*ret = errno;
}
return -1;
}
#ifndef O_CLOEXEC
int v;
v = fcntl(fd, F_GETFD, 0);
/* we ignore an error, it's not fatal and there is nothing we
* can do about it anyways */
(void)fcntl(fd, F_SETFD, v | FD_CLOEXEC);
#endif
return fd;
}