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
108 lines
3.4 KiB
Groff
108 lines
3.4 KiB
Groff
.\" $NetBSD: setpgid.2,v 1.22 2004/05/13 10:20:58 wiz Exp $
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.\"
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.\" Copyright (c) 1980, 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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.\" @(#)setpgid.2 8.1 (Berkeley) 6/4/93
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.\"
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.Dd December 18, 2003
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.Dt SETPGID 2
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.Os
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.Sh NAME
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.Nm setpgid ,
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.Nm setpgrp
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.Nd set process group
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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 int
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.Fn setpgid "pid_t pid" "pid_t pgrp"
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.Ft int
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.Fn setpgrp "pid_t pid" "pid_t pgrp"
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.Sh DESCRIPTION
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.Fn setpgid
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sets the process group of the specified process
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.Ar pid
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to the specified
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.Ar pgrp .
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If
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.Ar pid
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is zero, then the call applies to the current process.
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If
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.Ar pgrp
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is zero, then the process id of the process specified by
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.Ar pid
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is used instead.
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.Pp
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If the invoker is not the super-user, then the affected process
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must have the same effective user-id as the invoker or be a descendant
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of the invoking process.
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.Sh RETURN VALUES
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.Fn setpgid
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returns 0 when the operation was successful.
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If the request failed, \-1 is returned and the global variable
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.Va errno
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indicates the reason.
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.Sh ERRORS
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.Fn setpgid
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will fail and the process group will not be altered if:
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.Bl -tag -width Er
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.It Bq Er EACCES
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The value of the
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.Fa pid
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argument matches the process ID of a child process of the calling process,
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and the child process has successfully executed one of the exec functions.
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.It Bq Er EINVAL
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The value of the
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.Fa pgrp
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argument is less than zero.
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.It Bq Er EPERM
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The effective user ID of the requested process is different
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from that of the caller and the process is not a descendant
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of the calling process.
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.It Bq Er ESRCH
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The value of the
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.Fa pid
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argument does not match the process ID of the calling process or of a
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child process of the calling process.
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.El
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.Sh SEE ALSO
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.Xr getpgrp 2
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.Sh STANDARDS
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The
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.Fn setpgid
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function conforms to
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.St -p1003.1-90 .
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.Sh COMPATIBILITY
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.Fn setpgrp
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is identical to
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.Fn setpgid ,
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and is retained for calling convention compatibility with historical
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versions of
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.Bx .
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