2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
156 lines
5.3 KiB
Groff
156 lines
5.3 KiB
Groff
.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" from: @(#)strmode.3 8.3 (Berkeley) 7/28/94
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.\" $NetBSD: strmode.3,v 1.17 2006/10/16 08:48:45 wiz Exp $
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.\"
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.Dd July 28, 1994
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.Dt STRMODE 3
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.Os
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.Sh NAME
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.Nm strmode
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.Nd convert inode status information into a symbolic string
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In unistd.h
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.Ft void
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.Fn strmode "mode_t mode" "char *bp"
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.Sh DESCRIPTION
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The
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.Fn strmode
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function
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converts a file
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.Fa mode
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(the type and permission information associated with an inode, see
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.Xr stat 2 )
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into a symbolic string which is stored in the location referenced by
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.Fa bp .
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This stored string is eleven characters in length plus a trailing nul byte.
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.Pp
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The first character is the inode type, and will be one of the following:
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.Pp
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.Bl -tag -width flag -offset indent -compact
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.It \-
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regular file
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.It a
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regular file in archive state 1
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.It A
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regular file in archive state 2
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.It b
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block special
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.It c
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character special
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.It d
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directory
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.It l
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symbolic link
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.It p
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fifo
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.It s
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socket
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.It w
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whiteout
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.It ?
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unknown inode type
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.El
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.Pp
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The next nine characters encode three sets of permissions, in three
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characters each.
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The first three characters are the permissions for the owner of the
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file, the second three for the group the file belongs to, and the
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third for the ``other'', or default, set of users.
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.Pp
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Permission checking is done as specifically as possible.
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If read permission is denied to the owner of a file in the first set
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of permissions, the owner of the file will not be able to read the file.
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This is true even if the owner is in the file's group and the group
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permissions allow reading or the ``other'' permissions allow reading.
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.Pp
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If the first character of the three character set is an ``r'', the file is
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readable for that set of users; if a dash ``\-'', it is not readable.
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.Pp
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If the second character of the three character set is a ``w'', the file is
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writable for that set of users; if a dash ``\-'', it is not writable.
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.Pp
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The third character is the first of the following characters that apply:
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.Bl -tag -width xxxx
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.It S
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If the character is part of the owner permissions and the file is not
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executable or the directory is not searchable by the owner, and the
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set-user-id bit is set.
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.It S
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If the character is part of the group permissions and the file is not
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executable or the directory is not searchable by the group, and the
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set-group-id bit is set.
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.It T
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If the character is part of the other permissions and the file is not
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executable or the directory is not searchable by others, and the ``sticky''
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.Pq Dv S_ISVTX
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bit is set.
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.It s
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If the character is part of the owner permissions and the file is
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executable or the directory searchable by the owner, and the set-user-id
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bit is set.
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.It s
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If the character is part of the group permissions and the file is
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executable or the directory searchable by the group, and the set-group-id
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bit is set.
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.It t
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If the character is part of the other permissions and the file is
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executable or the directory searchable by others, and the ``sticky''
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.Pq Dv S_ISVTX
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bit is set.
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.It x
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The file is executable or the directory is searchable.
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.It \-
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None of the above apply.
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.El
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.Pp
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The last character is a plus sign ``+'' if there are any alternative
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or additional access control methods associated with the inode, otherwise
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it will be a space.
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.Pp
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Archive state 1 and archive state 2 represent file system dependent
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archive state for a file.
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Most file systems do not retain file archive
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state, and so will not report files in either archive state.
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msdosfs will report a file in archive state 1 if it has been
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archived more recently than modified.
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Hierarchical storage systems may have multiple archive states for a
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file and may define archive states 1 and 2 as appropriate.
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.Sh SEE ALSO
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.Xr chmod 1 ,
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.Xr find 1 ,
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.Xr stat 2 ,
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.Xr getmode 3 ,
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.Xr setmode 3
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.Sh HISTORY
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The
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.Fn strmode
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function first appeared in
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.Bx 4.4 .
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