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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASOPENAT
#ifndef _ATFILE_SOURCE
#define _ATFILE_SOURCE
#endif
#include <skalibs/nonposix.h>
#include <errno.h>
#include <skalibs/stat.h>
#include <skalibs/fcntl.h>
#include <skalibs/unix-transactional.h>
int open2_at (int dirfd, char const *file, int flags)
{
int e = errno ;
int fd ;
do fd = openat(dirfd, file, flags) ; /* all systems supporting openat() have O_CLOEXEC */
while (fd == -1 && errno == EINTR) ;
if (fd >= 0) errno = e ;
return fd ;
}
#else
#include <skalibs/fcntl.h>
#include <skalibs/djbunix.h>
#include <skalibs/unix-transactional.h>
#include "at-internal.h"
struct open2_s
{
char const *file ;
int flags ;
} ;
static int do_open2 (void *p)
{
struct open2_s *b = p ;
return open2(b->file, b->flags) ;
}
static void cancel_open2 (int fd, void *p)
{
(void)p ;
fd_close(fd) ;
}
int open2_at (int dirfd, char const *file, int flags)
{
struct open2_s args = { .file = file, .flags = flags } ;
return emulate_at(dirfd, &do_open2, &cancel_open2, &args) ;
}
#endif
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