The Open Group Base Specifications Issue 8
IEEE Std 1003.1-2024
Copyright © 2001-2024 The IEEE and The Open Group

NAME

fchdir — change working directory

SYNOPSIS

#include <unistd.h>

int fchdir(int
fildes);

DESCRIPTION

The fchdir() function shall be equivalent to chdir() except that the directory that is to be the new current working directory is specified by the file descriptor fildes.

A conforming application can obtain a file descriptor for a file of type directory using open(), provided that the file status flags and access modes do not contain O_WRONLY or O_RDWR.

RETURN VALUE

Upon successful completion, fchdir() shall return 0. Otherwise, it shall return -1 and set errno to indicate the error. On failure the current working directory shall remain unchanged.

ERRORS

The fchdir() function shall fail if:

[EACCES]
Search permission is denied for the directory referenced by fildes.
[EBADF]
The fildes argument is not an open file descriptor.
[ENOTDIR]
The open file descriptor fildes does not refer to a directory.

The fchdir() may fail if:

[EINTR]
A signal was caught during the execution of fchdir().
[EIO]
An I/O error occurred while reading from or writing to the file system.

The following sections are informative.

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

chdir , dirfd

XBD <unistd.h>

CHANGE HISTORY

First released in Issue 4, Version 2.

Issue 5

Moved from X/OPEN UNIX extension to BASE.

Issue 7

The fchdir() function is moved from the XSI option to the Base.

End of informative text.

 

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