From 161897cfcbfe6b86a4749a2092a7fe30f75c37be Mon Sep 17 00:00:00 2001
From: Dima Dorfman <dd@FreeBSD.org>
Date: Sat, 14 Apr 2001 02:34:59 +0000
Subject: [PATCH] Add ``RETURN VALUES'' and ``ERRORS'' sections since
 getpgid(2) can fail.  Also fix a minor grammar nit (it's -> its).

PR:		26520
---
 lib/libc/sys/getpgrp.2 | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/lib/libc/sys/getpgrp.2 b/lib/libc/sys/getpgrp.2
index 8e5670825ab..11b0063fa5f 100644
--- a/lib/libc/sys/getpgrp.2
+++ b/lib/libc/sys/getpgrp.2
@@ -76,6 +76,23 @@ and
 .Fn tcsetpgrp
 calls
 are used to get/set the process group of the control terminal.
+.Sh RETURN VALUES
+The
+.Fn getpgrp
+call always succeeds.
+Upon successful completion, the
+.Fn getpgid
+call returns the process group of the specified process;
+otherwise, it returns a value of \-1 and sets
+.Va errno
+to indicate the error.
+.Sh ERRORS
+.Fn getpgid
+will succeed unless:
+.Bl -tag -width Er
+.It Bq Er ESRCH
+there is no process whose process ID equals fo
+.Fa pid
 .Sh SEE ALSO
 .Xr getsid 2 ,
 .Xr setpgid 2 ,
@@ -87,7 +104,7 @@ function call appeared in
 .Bx 4.0 .
 The
 .Fn getpgid
-function call is derived from it's usage in System V Release 4.
+function call is derived from its usage in System V Release 4.
 .Sh STANDARDS
 The
 .Fn getpgrp