/* written by Jim Meyering */
-#include <config.h>
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
#include "openat.h"
#include <errno.h>
#include <fcntl.h>
-#include "error.h"
-#include "exitfail.h"
+#include "dirname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
#include "save-cwd.h"
#include "gettext.h"
va_end (arg);
}
- if (fd == AT_FDCWD || *file == '/')
+ if (fd == AT_FDCWD || IS_ABSOLUTE_FILE_NAME (file))
return open (file, flags, mode);
if (save_cwd (&saved_cwd) != 0)
- error (exit_failure, errno,
- _("openat: unable to record current working directory"));
+ openat_save_fail (errno);
if (fchdir (fd) != 0)
{
saved_errno = errno;
if (restore_cwd (&saved_cwd) != 0)
- error (exit_failure, errno,
- _("openat: unable to restore working directory"));
+ openat_restore_fail (errno);
free_cwd (&saved_cwd);
return new_fd;
}
+#if !HAVE_FDOPENDIR
+
/* Replacement for Solaris' function by the same name.
<http://www.google.com/search?q=fdopendir+site:docs.sun.com>
Simulate it by doing save_cwd/fchdir/opendir(".")/restore_cwd.
If either the save_cwd or the restore_cwd fails (relatively unlikely,
and usually indicative of a problem that deserves close attention),
then give a diagnostic and exit nonzero.
- Otherwise, this function works just like Solaris' fdopendir. */
+ Otherwise, this function works just like Solaris' fdopendir.
+
+ W A R N I N G:
+ Unlike the other fd-related functions here, this one
+ effectively consumes its FD parameter. The caller should not
+ close or otherwise manipulate FD if this function returns successfully. */
DIR *
fdopendir (int fd)
{
int saved_errno;
DIR *dir;
- if (fd == AT_FDCWD)
- return opendir (".");
-
if (save_cwd (&saved_cwd) != 0)
- error (exit_failure, errno,
- _("fdopendir: unable to record current working directory"));
+ openat_save_fail (errno);
if (fchdir (fd) != 0)
{
saved_errno = errno;
if (restore_cwd (&saved_cwd) != 0)
- error (exit_failure, errno,
- _("fdopendir: unable to restore working directory"));
+ openat_restore_fail (errno);
free_cwd (&saved_cwd);
+ if (dir)
+ close (fd);
errno = saved_errno;
return dir;
}
+#endif
+
/* Replacement for Solaris' function by the same name.
<http://www.google.com/search?q=fstatat+site:docs.sun.com>
Simulate it by doing save_cwd/fchdir/(stat|lstat)/restore_cwd.
: stat (file, st));
if (save_cwd (&saved_cwd) != 0)
- error (exit_failure, errno,
- _("fstatat: unable to record current working directory"));
+ openat_save_fail (errno);
if (fchdir (fd) != 0)
{
saved_errno = errno;
if (restore_cwd (&saved_cwd) != 0)
- error (exit_failure, errno,
- _("fstatat: unable to restore working directory"));
+ openat_restore_fail (errno);
+
+ free_cwd (&saved_cwd);
+
+ errno = saved_errno;
+ return err;
+}
+
+/* Replacement for Solaris' function by the same name.
+ <http://www.google.com/search?q=unlinkat+site:docs.sun.com>
+ Simulate it by doing save_cwd/fchdir/(unlink|rmdir)/restore_cwd.
+ If either the save_cwd or the restore_cwd fails (relatively unlikely,
+ and usually indicative of a problem that deserves close attention),
+ then give a diagnostic and exit nonzero.
+ Otherwise, this function works just like Solaris' unlinkat. */
+int
+unlinkat (int fd, char const *file, int flag)
+{
+ struct saved_cwd saved_cwd;
+ int saved_errno;
+ int err;
+
+ if (fd == AT_FDCWD)
+ return (flag == AT_REMOVEDIR ? rmdir (file) : unlink (file));
+
+ if (save_cwd (&saved_cwd) != 0)
+ openat_save_fail (errno);
+
+ if (fchdir (fd) != 0)
+ {
+ saved_errno = errno;
+ free_cwd (&saved_cwd);
+ errno = saved_errno;
+ return -1;
+ }
+
+ err = (flag == AT_REMOVEDIR ? rmdir (file) : unlink (file));
+ saved_errno = errno;
+
+ if (restore_cwd (&saved_cwd) != 0)
+ openat_restore_fail (errno);
free_cwd (&saved_cwd);