123 lines
3.6 KiB
Groff
123 lines
3.6 KiB
Groff
.\" $NetBSD: stat_flags.3,v 1.5 2008/04/30 13:10:52 martin Exp $
|
|
.\"
|
|
.\" Copyright (c) 1996 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Christos Zoulas.
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
.\"
|
|
.Dd December 14, 2006
|
|
.Dt STAT_FLAGS 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm string_to_flags ,
|
|
.Nm flags_to_string
|
|
.Nd Stat flags parsing and printing functions
|
|
.Sh LIBRARY
|
|
.Lb libutil
|
|
.Sh SYNOPSIS
|
|
.In util.h
|
|
.Ft char *
|
|
.Fn flags_to_string "u_long flags" "const char *def"
|
|
.Ft int
|
|
.Fn string_to_flags "char **stringp" "u_long *setp" "u_long clrp"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn flags_to_string
|
|
and
|
|
.Fn string_to_flags
|
|
functions are used by
|
|
programs such as
|
|
.Xr ls 1 ,
|
|
.Xr mtree 8 ,
|
|
.Xr makefs 8 ,
|
|
etc., to parse and/or print the
|
|
.Dv st_flags field in the
|
|
.Xr stat 2
|
|
structure.
|
|
.Pp
|
|
They recognize the following flags:
|
|
.Bl -tag -width "schg (SF_IMMUTABLE)"
|
|
.It Dv arch Pq Dv SF_ARCHIVED
|
|
file is archived.
|
|
.It Dv nodump Pq Dv UF_NODUMP
|
|
do not dump file.
|
|
.It Dv opaque Pq Dv UF_OPAQUE
|
|
directory is opaque in union filesystems.
|
|
.It Dv sappnd Pq Dv SF_APPEND
|
|
writes to the file may only append (superuser only).
|
|
.It Dv schg Pq Dv SF_IMMUTABLE
|
|
file cannot be changed, is immutable (superuser only).
|
|
.It Dv snap Pq Dv SF_SNAPSHOT
|
|
file is snapshot inode.
|
|
.It Dv uappnd Pq Dv UF_APPEND
|
|
writes to the file may only append (user only).
|
|
.It Dv uchg Pq Dv UF_IMMUTABLE
|
|
file cannot be changed, is immutable (user only).
|
|
.El
|
|
.Pp
|
|
The
|
|
.Fn flags_to_string
|
|
function converts the bits set in the
|
|
.Fa flags
|
|
argument to a comma-separated string and returns it.
|
|
If no flags are set, then the
|
|
.Fa def
|
|
string is returned.
|
|
The returned string is allocated via
|
|
.Xr malloc 3
|
|
and it is the responsibility of the caller to
|
|
.Xr free 3
|
|
it.
|
|
.Pp
|
|
The
|
|
.Fn string_to_flags
|
|
function takes a
|
|
.Fa stringp
|
|
of space, comma, or tab separated flag names
|
|
and places their bit value on the
|
|
.Fa setp
|
|
argument.
|
|
If the flag name is prefixed by:
|
|
.Dq no ,
|
|
then the bit value is placed on the
|
|
.Fa clrp
|
|
argument.
|
|
.Sh RETURN VALUES
|
|
.Fn flags_to_string
|
|
returns the symbolic representation of flags, the default string, or
|
|
.Dv NULL
|
|
if allocation failed.
|
|
.Pp
|
|
.Fn string_to_flags
|
|
returns
|
|
.Dv 0
|
|
on success and
|
|
.Dv 1
|
|
if it fails to parse the string, setting
|
|
.Fa stringp
|
|
to point to the first string that it failed to parse.
|
|
.Sh SEE ALSO
|
|
.Xr stat 2
|