NAME
rename - change the name of a file
SYNOPSIS
#include <stdio.h>
int rename(const char *from, const char *to)
DESCRIPTION
Rename causes the link named from to be renamed as to. If
to exists, then it is first removed. Both from and to must
be of the same type (that is, both directories or both non-
directories), and must reside on the same file system.
Rename guarantees that an instance of to will always exist,
even if the system should crash in the middle of the opera-
tion.
If the final component of from is a symbolic link, the sym-
bolic link is renamed, not the file or directory to which it
points.
RETURN VALUE
A 0 value is returned if the operation succeeds, otherwise
rename returns -1 and the global variable errno indicates
the reason for the failure.
ERRORS
Rename will fail and neither of the argument files will be
affected if any of the following are true:
[ENAMETOOLONG] A path name exceeds PATH_MAX characters.
[ENOENT] A component of the from path does not exist,
or a path prefix of to does not exist.
[EACCES] A component of either path prefix denies
search permission.
[EACCES] The requested link requires writing in a
directory with a mode that denies write per-
mission.
[EPERM] The directory containing from is marked
sticky, and neither the containing directory
nor from are owned by the effective user ID.
[EPERM] The to file exists, the directory containing
to is marked sticky, and neither the contain-
ing directory nor to are owned by the effec-
tive user ID.
[ELOOP] Too many symbolic links were encountered in
translating either pathname. (Minix-vmd)
[ENOTDIR] A component of either path prefix is not a
directory.
[ENOTDIR] From is a directory, but to is not a direc-
tory.
[EISDIR] To is a directory, but from is not a direc-
tory.
[EXDEV] The link named by to and the file named by
from are on different logical devices (file
systems).
[ENOSPC] The directory in which the entry for the new
name is being placed cannot be extended
because there is no space left on the file
system containing the directory.
[EIO] An I/O error occurred while making or updat-
ing a directory entry.
[EROFS] The requested link requires writing in a
directory on a read-only file system.
[EFAULT] Path points outside the process's allocated
address space.
[EINVAL] From is a parent directory of to, or an
attempt is made to rename ``.'' or ``..''.
[ENOTEMPTY] To is a directory and is not empty.
SEE ALSO
open(2)