This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
fchdir — change working directory
int fchdir(int fildes);
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.
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.
The fchdir() function shall fail if:
- Search permission is denied for the directory referenced by
- The fildes argument is not an open file descriptor.
- The open file descriptor fildes does not refer to a directory.
The fchdir() may fail if:
- A signal was caught during the execution of fchdir().
- An I/O error occurred while reading from or writing to the file
The following sections are informative.
The Base Definitions volume of POSIX.1‐2017,
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1-2017, Standard for Information Technology -- Portable Operating
System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018
Edition, Copyright (C) 2018 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html .
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