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/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASLINKAT
#ifndef _ATFILE_SOURCE
#define _ATFILE_SOURCE
#endif
#include <skalibs/nonposix.h>
#include <unistd.h>
#include <errno.h>
#include <skalibs/fcntl.h>
#include <skalibs/unix-transactional.h>
int symlink_at (char const *src, int dirfd, char const *dst)
{
int e = errno ;
int r ;
do r = symlinkat(src, dirfd, dst) ;
while (r == -1 && errno == EINTR) ;
if (r >= 0) errno = e ;
return r ;
}
#else
#include <unistd.h>
#include <errno.h>
#include <skalibs/posixplz.h>
#include <skalibs/unix-transactional.h>
#include "at-internal.h"
struct symlink_s
{
char const *src ;
char const *dst ;
} ;
static int do_symlink (void *p)
{
struct symlink_s *b = p ;
return symlink(b->src, b->dst) ;
}
static void cancel_symlink (int r, void *p)
{
struct symlink_s *b = p ;
(void)r ;
unlink_void(b->dst) ;
}
int symlink_at (char const *src, int dirfd, char const *dst)
{
struct symlink_s args = { .src = src, .dst = dst } ;
return emulate_at(dirfd, &do_symlink, &cancel_symlink, &args) ;
}
#endif
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