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
220 lines
6.5 KiB
Groff
220 lines
6.5 KiB
Groff
.\" $NetBSD: pwcache.3,v 1.17 2008/05/02 18:11:04 martin Exp $
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.\"
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.\" Copyright (c) 1989, 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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.\"
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.\" Copyright (c) 2002 The NetBSD Foundation, Inc.
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.\" 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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.\" @(#)pwcache.3 8.1 (Berkeley) 6/9/93
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.\"
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.Dd January 24, 2002
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.Dt PWCACHE 3
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.Os
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.Sh NAME
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.Nm pwcache ,
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.Nm user_from_uid ,
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.Nm group_from_gid
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.Nd cache password and group entries
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In pwd.h
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.Ft const char *
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.Fn user_from_uid "uid_t uid" "int nouser"
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.Ft int
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.Fn uid_from_user "const char *name" "uid_t *uid"
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.Ft int
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.Fn pwcache_userdb "int (*setpassent)(int)" "void (*endpwent)(void)" "struct passwd * (*getpwnam)(const char *)" "struct passwd * (*getpwuid)(uid_t)"
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.In grp.h
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.Ft const char *
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.Fn group_from_gid "gid_t gid" "int nogroup"
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.Ft int
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.Fn gid_from_group "const char *name" "gid_t *gid"
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.Ft int
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.Fn pwcache_groupdb "int (*setgroupent)(int)" "void (*endgrent)(void)" "struct group * (*getgrnam)(const char *)" "struct group * (*getgrgid)(gid_t)"
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.Sh DESCRIPTION
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The
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.Fn user_from_uid
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function returns the user name associated with the argument
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.Fa uid .
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The user name is cached so that multiple calls with the same
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.Fa uid
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do not require additional calls to
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.Xr getpwuid 3 .
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If there is no user associated with the
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.Fa uid ,
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a pointer is returned
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to a string representation of the
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.Fa uid ,
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unless the argument
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.Fa nouser
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is non-zero, in which case a
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.Dv NULL
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pointer is returned.
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.Pp
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The
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.Fn group_from_gid
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function returns the group name associated with the argument
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.Fa gid .
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The group name is cached so that multiple calls with the same
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.Fa gid
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do not require additional calls to
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.Xr getgrgid 3 .
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If there is no group associated with the
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.Fa gid ,
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a pointer is returned
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to a string representation of the
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.Fa gid ,
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unless the argument
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.Fa nogroup
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is non-zero, in which case a
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.Dv NULL
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pointer is returned.
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.Pp
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The
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.Fn uid_from_user
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function returns the uid associated with the argument
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.Fa name .
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The uid is cached so that multiple calls with the same
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.Fa name
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do not require additional calls to
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.Xr getpwnam 3 .
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If there is no uid associated with the
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.Fa name ,
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the
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.Fn uid_from_user
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function returns \-1; otherwise it stores the uid at the location pointed to by
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.Fa uid
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and returns 0.
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.Pp
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The
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.Fn gid_from_group
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function returns the gid associated with the argument
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.Fa name .
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The gid is cached so that multiple calls with the same
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.Fa name
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do not require additional calls to
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.Xr getgrnam 3 .
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If there is no gid associated with the
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.Fa name ,
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the
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.Fn gid_from_group
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function returns \-1; otherwise it stores the gid at the location pointed to by
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.Fa gid
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and returns 0.
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.Pp
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The
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.Fn pwcache_userdb
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function changes the user database access routines which
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.Fn user_from_uid
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and
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.Fn uid_from_user
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call to search for users.
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The caches are flushed and the existing
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.Fn endpwent
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method is called before switching to the new routines.
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.Fa getpwnam
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and
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.Fa getpwuid
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must be provided, and
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.Fa setpassent
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and
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.Fa endpwent
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may be
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.Dv NULL
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pointers.
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.Pp
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The
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.Fn pwcache_groupdb
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function changes the group database access routines which
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.Fn group_from_gid
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and
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.Fn gid_from_group
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call to search for groups.
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The caches are flushed and the existing
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.Fn endgrent
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method is called before switching to the new routines.
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.Fa getgrnam
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and
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.Fa getgrgid
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must be provided, and
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.Fa setgroupent
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and
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.Fa endgrent
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may be
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.Dv NULL
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pointers.
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.Sh SEE ALSO
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.Xr getgrgid 3 ,
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.Xr getgrnam 3 ,
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.Xr getpwnam 3 ,
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.Xr getpwuid 3
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.Sh HISTORY
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The
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.Fn user_from_uid
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and
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.Fn group_from_gid
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functions first appeared in
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.Bx 4.4 .
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.Pp
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The
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.Fn uid_from_user
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and
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.Fn gid_from_group
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functions first appeared in
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.Nx 1.4 .
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.Pp
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The
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.Fn pwcache_userdb
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and
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.Fn pwcache_groupdb
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functions first appeared in
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.Nx 1.6 .
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