$NetBSD: getsid.2,v 1.11 2011/04/04 08:00:53 jruoho Exp $
Copyright (c) 1983, 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)
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@(#)getpgrp.2 8.1 (Berkeley) 6/4/93
.Dd April 4, 2011 .Dt GETSID 2 .Os .Sh NAME .Nm getsid .Nd get session ID .Sh LIBRARY .Lb libc .Sh SYNOPSIS n unistd.h .Ft pid_t .Fn getsid "pid_t pid" .Sh DESCRIPTION The .Fn getsid function returns the session ID of the process specified by .Ar pid . If .Ar pid is 0, the session ID of the calling process is returned. The session ID is defined as the process group ID of the process that is the session leader. .Sh ERRORS If an error occurs, .Fn getsid returns -1 and the global variable .Va errno is set to indicate the error, as follows: l -tag -width Er t Bq Er ESRCH No process can be found corresponding to that specified by .Ar pid . .El .Sh SEE ALSO .Xr getpgid 2 , .Xr setsid 2 , .Xr termios 4 .Sh STANDARDS The .Fn getsid function conforms to .St -xpg4.2 .
Copyright (c) 1983, 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.
@(#)getpgrp.2 8.1 (Berkeley) 6/4/93
.Dd April 4, 2011 .Dt GETSID 2 .Os .Sh NAME .Nm getsid .Nd get session ID .Sh LIBRARY .Lb libc .Sh SYNOPSIS n unistd.h .Ft pid_t .Fn getsid "pid_t pid" .Sh DESCRIPTION The .Fn getsid function returns the session ID of the process specified by .Ar pid . If .Ar pid is 0, the session ID of the calling process is returned. The session ID is defined as the process group ID of the process that is the session leader. .Sh ERRORS If an error occurs, .Fn getsid returns -1 and the global variable .Va errno is set to indicate the error, as follows: l -tag -width Er t Bq Er ESRCH No process can be found corresponding to that specified by .Ar pid . .El .Sh SEE ALSO .Xr getpgid 2 , .Xr setsid 2 , .Xr termios 4 .Sh STANDARDS The .Fn getsid function conforms to .St -xpg4.2 .
Indexes created Sat Sep 20 22:09:52 GMT 2025