RTEMS 4.9.1 On-Line Library

Files and Directories Manager rename - Renames a file

RTEMS POSIX API User's Guide

4.4.20: rename - Renames a file

CALLING SEQUENCE:

#include <unistd.h>

int rename(
  const char *old,
  const char *new
);

STATUS CODES:

EACCES: Search permission is denied for a directory in a file's path prefix.
EBUSY: The directory is in use.
EEXIST: The named file already exists.
EINVAL: Invalid argument.
EISDIR: Attempt to open a directory for writing or to rename a file to be a directory.
EMLINK: The number of links would exceed LINK_MAX.
ENAMETOOLONG: Length of a filename string exceeds PATH_MAX and _POSIX_NO_TRUNC is in effect.
ENOENT: A file or directory does no exist.
ENOSPC: No space left on disk.
ENOTDIR: A component of the specified pathname was not a directory when a directory was expected.
ENOTEMPTY: Attempt to delete or rename a non-empty directory.
EROFS: Read-only file system
EXDEV: Attempt to link a file to another file system.

DESCRIPTION:

The rename() function causes the file known bo old to now be known as new.

Ordinary files may be renamed to ordinary files, and directories may be renamed to directories; however, files cannot be converted using rename(). The new pathname may not contain a path prefix of old.

NOTES:

If a file already exists by the name new, it is removed. The rename() function is atomic. If the rename() detects an error, no files are removed. This guarantees that the rename("x", "x") does not remove x.

You may not rename dot or dot-dot.

The routine is implemented in Cygnus newlib using link() and unlink().

RTEMS POSIX API User's Guide