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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 <fcntl.h>
#include <skalibs/unix-transactional.h>
int open2_at (int dirfd, char const *file, int flags)
{
return openat(dirfd, file, flags) ;
}
#else
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <skalibs/djbunix.h>
#include <skalibs/unix-transactional.h>
int open2_at (int dirfd, char const *file, int flags)
{
int fd ;
int fdhere = open_read(".") ;
if (fdhere < 0) return -1 ;
if (fd_chdir(dirfd) < 0)
{
register int e = errno ;
fd_close(fdhere) ;
errno = e ;
return -1 ;
}
fd = open2(file, flags) ;
if (fd < 0)
{
register int e = errno ;
fd_chdir(fdhere) ;
fd_close(fdhere) ;
errno = e ;
return -1 ;
}
if (fd_chdir(fdhere) < 0)
{
register int e = errno ;
fd_close(fdhere) ;
errno = e ;
return -1 ;
}
return fd ;
}
#endif
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