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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <lha_internal.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <clplumbing/mkstemp_mode.h>
/*
* A slightly safer version of mkstemp(3)
*
* In this version, the file is initially created mode 0, and then chmod-ed
* to the requested permissions. This guarantees that the file is never
* open to others beyond the specified permissions at any time.
*/
int
mkstemp_mode(char* template, mode_t filemode)
{
mode_t maskval;
int fd;
maskval = umask(0777);
/* created file should now be mode 0000 */
fd = mkstemp(template);
umask(maskval); /* cannot fail :-) */
if (fd >= 0) {
if (chmod(template, filemode) < 0) {
int save = errno;
close(fd);
errno = save;
fd = -1;
}
}
return fd;
}
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