1 .\" Hey Emacs! This file is -*- nroff -*- source.
3 .\" This manpage is Copyright (C) 2006, Michael Kerrisk
5 .\" Permission is granted to make and distribute verbatim copies of this
6 .\" manual provided the copyright notice and this permission notice are
7 .\" preserved on all copies.
9 .\" Permission is granted to copy and distribute modified versions of this
10 .\" manual under the conditions for verbatim copying, provided that the
11 .\" entire resulting derived work is distributed under the terms of a
12 .\" permission notice identical to this one.
14 .\" Since the Linux kernel and libraries are constantly changing, this
15 .\" manual page may be incorrect or out-of-date. The author(s) assume no
16 .\" responsibility for errors or omissions, or for damages resulting from
17 .\" the use of the information contained herein. The author(s) may not
18 .\" have taken the same level of care in the production of this manual,
19 .\" which is licensed free of charge, as they might when working
22 .\" Formatted or processed versions of this manual, if unaccompanied by
23 .\" the source, must acknowledge the copyright and authors of this work.
26 .TH FCHOWNAT 2 2009-12-13 "Linux" "Linux Programmer's Manual"
28 fchownat \- change ownership of a file relative to a directory \
32 .B #include <fcntl.h> /* Definition of AT_* constants */
33 .B #include <unistd.h>
35 .BI "int fchownat(int " dirfd ", const char *" pathname ,
36 .BI " uid_t " owner ", gid_t " group ", int " flags );
40 Feature Test Macro Requirements for glibc (see
41 .BR feature_test_macros (7)):
50 _XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
60 system call operates in exactly the same way as
62 except for the differences described in this manual page.
64 If the pathname given in
66 is relative, then it is interpreted relative to the directory
67 referred to by the file descriptor
69 (rather than relative to the current working directory of
70 the calling process, as is done by
72 for a relative pathname).
82 is interpreted relative to the current working
83 directory of the calling process (like
93 can either be 0, or include the following flag:
95 .B AT_SYMLINK_NOFOLLOW
98 is a symbolic link, do not dereference it:
99 instead operate on the link itself, like
103 dereferences symbolic links, like
109 On error, \-1 is returned and
111 is set to indicate the error.
113 The same errors that occur for
117 The following additional errors can occur for
122 is not a valid file descriptor.
125 Invalid flag specified in
132 is a file descriptor referring to a file other than a directory.
135 was added to Linux in kernel 2.6.16.
138 A similar system call exists on Solaris.
142 for an explanation of the need for
147 .BR path_resolution (7),