minix/lib/libc/sys/getsid.2
Lionel Sambuc f14fb60209 Libraries updates and cleanup
* Updating common/lib
 * Updating lib/csu
 * Updating lib/libc
 * Updating libexec/ld.elf_so
 * Corrected test on __minix in featuretest to actually follow the
   meaning of the comment.
 * Cleaned up _REENTRANT-related defintions.
 * Disabled -D_REENTRANT for libfetch
 * Removing some unneeded __NBSD_LIBC defines and tests

Change-Id: Ic1394baef74d11b9f86b312f5ff4bbc3cbf72ce2
2013-01-14 11:36:26 +01:00

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.\" $NetBSD: getsid.2,v 1.11 2011/04/04 08:00:53 jruoho Exp $
.\"
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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
.In 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:
.Bl -tag -width Er
.It 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 .