From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 28 Jul 2004 19:41:08 +0000 (+0000)
Subject: Include <errno.h>.
X-Git-Tag: v5.3.0~1049
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c6ecf213aeb1d02b48742869229fffd358163d9;p=thirdparty%2Fcoreutils.git

Include <errno.h>.
(EOVERFLOW): Define if not defined.
(getgroups): Return -1 with errno=EOVERFLOW if an integer overflow
occurs.
---

diff --git a/lib/getugroups.c b/lib/getugroups.c
index b5e2687778..dbd86ef939 100644
--- a/lib/getugroups.c
+++ b/lib/getugroups.c
@@ -1,5 +1,7 @@
 /* getugroups.c -- return a list of the groups a user is in
-   Copyright (C) 1990, 1991, 1998, 1999, 2000, 2003 Free Software Foundation.
+
+   Copyright (C) 1990, 1991, 1998, 1999, 2000, 2003, 2004 Free
+   Software Foundation.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -29,6 +31,11 @@
 # include <unistd.h>
 #endif
 
+#include <errno.h>
+#ifndef EOVERFLOW
+# define EOVERFLOW EINVAL
+#endif
+
 /* setgrent, getgrent, and endgrent are not specified by POSIX.1,
    so header files might not declare them.
    If you don't have them at all, we can't implement this function.
@@ -88,6 +95,11 @@ getugroups (int maxcount, GETGROUPS_T *grouplist, char *username, gid_t gid)
 		  grouplist[count] = grp->gr_gid;
 		}
 	      count++;
+	      if (count < 0)
+		{
+		  errno = EOVERFLOW;
+		  return -1;
+		}
 	    }
 	}
     }