Add manual pages for posix_spawn() functions.

PR:	standards/122051

1 files changed, 111 insertions, 0 deletions

diff --git a/lib/libc/gen/posix_spawnattr_getflags.3 b/lib/libc/gen/posix_spawnattr_getflags.3
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+.\" Copyright (c) 2008 Ed Schouten <ed@FreeBSD.org>
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+.\"
+.\" Portions of this text are reprinted and reproduced in electronic form
+.\" from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology --
+.\" Portable Operating System Interface (POSIX), The Open Group Base
+.\" Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of
+.\" Electrical and Electronics Engineers, Inc and The Open Group.  In the
+.\" event of any discrepancy between this version and the original IEEE and
+.\" The Open Group Standard, the original IEEE and The Open Group Standard is
+.\" the referee document.  The original Standard can be obtained online at
+.\"	http://www.opengroup.org/unix/online.html.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd Mar 24, 2008
+.Dt POSIX_SPAWNATTR_GETFLAGS 3
+.Os
+.Sh NAME
+.Nm posix_spawnattr_getflags ,
+.Nm posix_spawnattr_setflags
+.Nd "get and set the spawn-flags attribute of a spawn attributes object"
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In spawn.h
+.Ft int
+.Fn posix_spawnattr_getflags "const posix_spawnattr_t *restrict attr" "short *restrict flags"
+.Ft int
+.Fn posix_spawnattr_setflags "posix_spawnattr_t *attr" "short flags"
+.Sh DESCRIPTION
+The
+.Fn posix_spawnattr_getflags
+function obtains the value of the spawn-flags attribute from the
+attributes object referenced by
+.Fa attr .
+.Pp
+The
+.Fn posix_spawnattr_setflags
+function sets the spawn-flags attribute in an initialized
+attributes object referenced by
+.Fa attr .
+.Pp
+The spawn-flags attribute is used to indicate which process attributes
+are to be changed in the new process image when invoking
+.Fn posix_spawn
+or
+.Fn posix_spawnp .
+It is the bitwise-inclusive OR of zero or more of the following flags
+(see
+.Fn posix_spawn ) :
+.Bl -tag -offset indent
+.It Dv POSIX_SPAWN_RESETIDS
+.It Dv POSIX_SPAWN_SETPGROUP
+.It Dv POSIX_SPAWN_SETSIGDEF
+.It Dv POSIX_SPAWN_SETSIGMASK
+.It Dv POSIX_SPAWN_SETSCHEDPARAM
+.It Dv POSIX_SPAWN_SETSCHEDULER
+.El
+.Pp
+These flags are defined in
+.In spawn.h .
+The default value of this attribute is as if no flags were set.
+.Sh RETURN VALUES
+The
+.Fn posix_spawnattr_getflags
+and
+.Fn posix_spawnattr_setflags
+functions return zero.
+.Sh SEE ALSO
+.Xr posix_spawn 3 ,
+.Xr posix_spawnattr_destroy 3 ,
+.Xr posix_spawnattr_init 3 ,
+.Xr posix_spawnp 3
+.Sh STANDARDS
+The
+.Fn posix_spawnattr_getflags
+and
+.Fn posix_spawnattr_setflags
+functions conform to
+.St -p1003.1-2001 .
+.Sh HISTORY
+The
+.Fn posix_spawnattr_getflags
+and
+.Fn posix_spawnattr_setflags
+functions first appeared in
+.Fx 8.0 .
+.Sh AUTHORS
+.An Ed Schouten Aq ed@FreeBSD.org