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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
commit253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch)
treeadf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man2/setsid.2
parenta9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff)
docs: Added All NetBSD Manuals
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+.\" $NetBSD: setsid.2,v 1.15 2011/04/04 08:00:53 jruoho Exp $
+.\"
+.\" Copyright (c) 1991, 1993
+.\" The Regents of the University of California. 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.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+.\"
+.\" @(#)setsid.2 8.1 (Berkeley) 6/4/93
+.\"
+.Dd April 4, 2011
+.Dt SETSID 2
+.Os
+.Sh NAME
+.Nm setsid
+.Nd create session and set process group ID
+.Sh LIBRARY
+.Lb libc
+.Sh SYNOPSIS
+.In unistd.h
+.Ft pid_t
+.Fn setsid "void"
+.Sh DESCRIPTION
+The
+.Fn setsid
+function creates a new session.
+The calling process is the session leader of the new session, is the
+process group leader of a new process group and has no controlling
+terminal.
+The calling process is the only process in either the session or the
+process group.
+.Pp
+Upon successful completion, the
+.Fn setsid
+function returns the value of the process group ID of the new process
+group, which is the same as the process ID of the calling process.
+.Sh ERRORS
+If an error occurs,
+.Fn setsid
+returns \-1 and the global variable
+.Va errno
+is set to indicate the error, as follows:
+.Bl -tag -width Er
+.It Bq Er EPERM
+The calling process is already a process group leader, or the process
+group ID of a process other than the calling process matches the process
+ID of the calling process.
+.El
+.Sh SEE ALSO
+.Xr getsid 2 ,
+.Xr setpgid 2 ,
+.Xr tcgetpgrp 3 ,
+.Xr tcsetpgrp 3
+.Sh STANDARDS
+The
+.Fn setsid
+function conforms to
+.St -p1003.1-90 .