mirror of https://github.com/GnoConsortium/gno.git
81 lines
3.1 KiB
Groff
81 lines
3.1 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" 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
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)unlink.2 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.TH UNLINK 2 "24 January 1997" GNO "System Calls"
|
|
.SH NAME
|
|
.BR unlink
|
|
\- remove directory entry
|
|
.SH SYNOPSIS
|
|
#include <unistd.h>
|
|
.sp 1
|
|
int
|
|
\fBunlink\fR (const char *\fIpath\fR);
|
|
.SH DESCRIPTION
|
|
The
|
|
.BR unlink
|
|
function
|
|
removes the link named by
|
|
.I path
|
|
from its directory and decrements the link count of the
|
|
file which was referenced by the link.
|
|
If that decrement reduces the link count of the file
|
|
to zero,
|
|
and no process has the file open, then
|
|
all resources associated with the file are reclaimed.
|
|
If one or more process have the file open when the last link is removed,
|
|
the link is removed, but the removal of the file is delayed until
|
|
all references to it have been closed.
|
|
.SH RETURN VALUES
|
|
Upon successful completion, a value of 0 is returned.
|
|
Otherwise, a value of -1 is returned and
|
|
.IR errno
|
|
is set to indicate the error.
|
|
.SH BUGS
|
|
Under currently available filesystems, there can be only a single link
|
|
to a given file.
|
|
.LP
|
|
The GNO
|
|
.BR unlink ,
|
|
unlike its UNIX counterpart, cannot currently unlink an open file.
|
|
Attempting to do so will return an error, and the file will still exist
|
|
when closed.
|
|
.SH SEE ALSO
|
|
.BR close (2),
|
|
.BR link (2),
|
|
.BR rmdir (2)
|
|
.BR symlink (7)
|
|
.SH HISTORY
|
|
An
|
|
.BR unlink
|
|
function call appeared in Version 6 AT&T UNIX.
|