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# renameat() - Unix, Linux System Call

# NAME

renameat - rename a file relative to directory file descriptors

# SYNOPSIS

    #include <stdio.h>

    int renameat(int olddirfd, const char *oldpath,
                 int newdirfd, const char *newpath);

# DESCRIPTION

The renameat() system call operates in exactly the same way as rename(2), except for the differences described in this manual page.

If the pathname given in oldpath is relative, then it is interpreted relative to the directory referred to by the file descriptor olddirfd (rather than relative to the current working directory of the calling process, as is done by rename(2) for a relative pathname).

If the pathname given in oldpath is relative and olddirfd is the special value AT_FDCWD, then oldpath is interpreted relative to the current working directory of the calling process (like rename(2)).

If the pathname given in oldpath is absolute, then olddirfd is ignored.

The interpretation of newpath is as for oldpath, except that a relative pathname is interpreted relative to the directory referred to by the file descriptor newdirfd.

# RETURN VALUE

On success, renameat() returns 0. On error, -1 is returned and errno is set to indicate the error.

# ERRORS

The same errors that occur for rename(2) can also occur for renameat(). The following additional errors can occur for renameat():

Tag | Description
--- | ---
EBADF | olddirfd or newdirfd is not a valid file descriptor.
ENOTDIR
| oldpath is a relative path and olddirfd is a file descriptor referring to a file other than a directory; or similar for newpath and newdirfd

# NOTES

See openat(2) for an explanation of the need for renameat().

# CONFORMING TO

This system call is non-standard but is proposed for inclusion in a future revision of POSIX.1.

# VERSIONS

renameat() was added to Linux in kernel 2.6.16.

# SEE ALSO

- openat (2)

- rename (2)

- path_resolution (2)

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