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getgrnam.3: Clarify RETURN VALUE description 

The page was a bit fuzzy in describing the return values for
various cases.  In particular, it needed to be more explicit
in describing what happens for the "not found" case.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=504708

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Reported-by: Andreas Henriksson <andreas@fatal.se>
This commit is contained in:
Michael Kerrisk 2008-11-07 16:01:18 -05:00
parent a6915393f0
commit b006e083a0
1 changed files with 11 additions and 5 deletions
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16
man3/getgrnam.3
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@ -28,7 +28,7 @@
.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
.\" Modified 2003-11-15 by aeb
.\"
.TH GETGRNAM 3 2008-08-29 "" "Linux Programmer's Manual"
.TH GETGRNAM 3 2008-11-07 "" "Linux Programmer's Manual"
.SH NAME
getgrnam, getgrnam_r, getgrgid, getgrgid_r \- get group file entry
.SH SYNOPSIS
@ -140,13 +140,19 @@ by subsequent calls to
or
.BR getgrnam ().
.LP
The
On sucess,
.BR getgrnam_r ()
and
.BR getgrgid_r ()
functions return
zero on success.
In case of error, an error number is returned.
return zero, and set
.IR *gbufp
to
.IR gbuf .
If no matching group record was found,
these functions return 0 and store NULL in
.IR *gbufp .
In case of error, an error number is returned, and NULL is stored in
.IR *gbufp .
.SH ERRORS
.TP
.BR 0 " or " ENOENT " or " ESRCH " or " EBADF " or " EPERM " or ... "