[src/trunk]: src/distrib/utils/libhack pty.o in libutil.a wants to call getgr...

[he <he%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d4b0a6392d6d
branches:  trunk
changeset: 584370:d4b0a6392d6d
user:      he <he%NetBSD.org@localhost>
date:      Wed Sep 14 15:31:18 2005 +0000

description:
pty.o in libutil.a wants to call getgrent_r(), so provide a cheesy
non-reentrant version here in order to avoid linker conflicts when
the rest of this file is attempted linked together with libc's
getgrent.o.

Reviewed by christos.

diffstat:

 distrib/utils/libhack/getgrent.c |  30 +++++++++++++++++++++++++++++-
 1 files changed, 29 insertions(+), 1 deletions(-)

diffs (65 lines):

diff -r bac2b69ffe34 -r d4b0a6392d6d distrib/utils/libhack/getgrent.c
--- a/distrib/utils/libhack/getgrent.c  Wed Sep 14 15:13:19 2005 +0000
+++ b/distrib/utils/libhack/getgrent.c  Wed Sep 14 15:31:18 2005 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: getgrent.c,v 1.10 2005/04/01 13:11:12 he Exp $ */
+/*     $NetBSD: getgrent.c,v 1.11 2005/09/14 15:31:18 he Exp $ */
 
 /*
  * Copyright (c) 1989, 1991, 1993
@@ -67,6 +67,7 @@
 #define getgrent               _getgrent
 #define getgrgid               _getgrgid
 #define getgrnam               _getgrnam
+#define getgrnam_r             _getgrnam_r
 #define setgrent               _setgrent
 #define setgroupent            _setgroupent
 #define getgroupmembership     _getgroupmembership
@@ -75,6 +76,7 @@
 __weak_alias(getgrent,_getgrent)
 __weak_alias(getgrgid,_getgrgid)
 __weak_alias(getgrnam,_getgrnam)
+__weak_alias(getgrnam_r,_getgrnam_r)
 __weak_alias(setgrent,_setgrent)
 __weak_alias(setgroupent,_setgroupent)
 __weak_alias(getgroupmembership,_getgroupmembership)
@@ -88,6 +90,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <errno.h>
 
 static FILE            *_gr_fp;
 static struct group    _gr_group;
@@ -113,6 +116,31 @@
        return &_gr_group;
 }
 
+int
+getgrnam_r(const char *name, struct group *grp, char *buffer,
+       size_t buflen, struct group **result)
+{
+       struct group *gp, *bgp;
+
+       /* 
+        * We blatantly cheat (don't provide reentrancy) 
+        * and hope to get away with it
+        */
+
+       *result = NULL;
+       bgp = (struct group*)buffer;
+       if (buflen < sizeof(struct group))
+               return ENOMEM;
+
+       gp = getgrnam(name);
+       if (gp) {
+               *bgp = *gp;
+               *result = bgp;
+       }
+
+       return (gp) ? ENOENT : 0;
+}
+
 struct group *
 getgrnam(const char *name)
 {