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head/lib/libc/sys/chown.2
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
.\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
.\" | .\" | ||||
.\" @(#)chown.2 8.4 (Berkeley) 4/19/94 | .\" @(#)chown.2 8.4 (Berkeley) 4/19/94 | ||||
.\" $FreeBSD$ | .\" $FreeBSD$ | ||||
.\" | .\" | ||||
.Dd Octover 20, 2018 | .Dd November 11, 2018 | ||||
.Dt CHOWN 2 | .Dt CHOWN 2 | ||||
.Os | .Os | ||||
.Sh NAME | .Sh NAME | ||||
.Nm chown , | .Nm chown , | ||||
.Nm fchown , | .Nm fchown , | ||||
.Nm lchown , | .Nm lchown , | ||||
.Nm fchownat | .Nm fchownat | ||||
.Nd change owner and group of a file | .Nd change owner and group of a file | ||||
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.In fcntl.h : | .In fcntl.h : | ||||
.Bl -tag -width indent | .Bl -tag -width indent | ||||
.It Dv AT_SYMLINK_NOFOLLOW | .It Dv AT_SYMLINK_NOFOLLOW | ||||
If | If | ||||
.Fa path | .Fa path | ||||
names a symbolic link, ownership of the symbolic link is changed. | names a symbolic link, ownership of the symbolic link is changed. | ||||
.It Dv AT_BENEATH | .It Dv AT_BENEATH | ||||
Only allow to change ownership of a file which is beneath of | Only allow to change ownership of a file which is beneath of | ||||
the starting directory. | the topping directory. | ||||
See the description of the | |||||
.Dv O_BENEATH | |||||
flag in the | |||||
.Xr open 2 | |||||
manual page. | |||||
.El | .El | ||||
.Pp | .Pp | ||||
If | If | ||||
.Fn fchownat | .Fn fchownat | ||||
is passed the special value | is passed the special value | ||||
.Dv AT_FDCWD | .Dv AT_FDCWD | ||||
in the | in the | ||||
.Fa fd | .Fa fd | ||||
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The | The | ||||
.Fa path | .Fa path | ||||
argument is not an absolute path and | argument is not an absolute path and | ||||
.Fa fd | .Fa fd | ||||
is neither | is neither | ||||
.Dv AT_FDCWD | .Dv AT_FDCWD | ||||
nor a file descriptor associated with a directory. | nor a file descriptor associated with a directory. | ||||
.It Bq Er ENOTCAPABLE | .It Bq Er ENOTCAPABLE | ||||
.Fa path | |||||
is an absolute path, | |||||
or contained a ".." component leading to a | |||||
directory outside of the directory hierarchy specified by | |||||
.Fa fd , | |||||
and the process is in capability mode. | |||||
.It Bq Er ENOTCAPABLE | |||||
The | The | ||||
.Dv AT_BENEATH | .Dv AT_BENEATH | ||||
flag was specified but | flag was provided to | ||||
.Fn fchownat , | |||||
and the absolute | |||||
.Fa path | .Fa path | ||||
is not strictly relative to the starting directory. | does not have its tail fully contained under the topping directory, | ||||
For example, | or the relative | ||||
.Fa path | .Fa path | ||||
is absolute or includes a ".." component that escapes the starting directory. | escapes it. | ||||
.El | .El | ||||
.Sh SEE ALSO | .Sh SEE ALSO | ||||
.Xr chgrp 1 , | .Xr chgrp 1 , | ||||
.Xr chflags 2 , | .Xr chflags 2 , | ||||
.Xr chmod 2 , | .Xr chmod 2 , | ||||
.Xr flock 2 , | .Xr flock 2 , | ||||
.Xr chown 8 | .Xr chown 8 | ||||
.Sh STANDARDS | .Sh STANDARDS | ||||
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