Name
fchownat — change ownership of a file relative to a
directory file descriptor
Synopsis
int
fchownat( |
int |
dirfd, |
| |
const char * |
pathname, |
| |
uid_t |
owner, |
| |
gid_t |
group, |
| |
int |
flags); |
DESCRIPTION
The fchownat() system call
operates in exactly the same way as chown(2), except for the
differences described in this manual page.
If the pathname given in pathname is relative, then it
is interpreted relative to the directory referred to by the
file descriptor dirfd
(rather than relative to the current working directory of the
calling process, as is done by chown(2) for a relative
pathname).
If pathname is
relative and dirfd is
the special value AT_FDCWD,
then pathname is
interpreted relative to the current working directory of the
calling process (like chown(2)).
If pathname is
absolute, then dirfd
is ignored.
flags can either
be 0, or include the following flag:
AT_SYMLINK_NOFOLLOW-
If pathname
is a symbolic link, do not dereference it: instead
operate on the link itself, like lchown(2). (By
default, fchownat()
dereferences symbolic links, like chown(2).)
RETURN VALUE
On success, fchownat()
returns 0. On error, −1 is returned and errno is set to indicate the error.
ERRORS
The same errors that occur for chown(2) can also occur for
fchownat(). The following
additional errors can occur for fchownat():
- EBADF
-
dirfd is not
a valid file descriptor.
- EINVAL
-
Invalid flag specified in flags.
- ENOTDIR
-
pathname is
relative and dirfd is a file
descriptor referring to a file other than a
directory.
VERSIONS
fchownat() was added to
Linux in kernel 2.6.16.
CONFORMING TO
This system call is non-standard but is proposed for
inclusion in a future revision of POSIX.1. A similar system
call exists on Solaris.
NOTES
See openat(2) for an
explanation of the need for fchownat().
SEE ALSO
chown(2), openat(2), path_resolution(7)
This manpage is Copyright (C) 2006, Michael Kerrisk
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