Add strtok_r.

[gnulib.git] / lib / getugroups.c

diff --git a/lib/getugroups.c b/lib/getugroups.c
index 2be31ec..dbd86ef 100644 (file)
--- 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 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
@@ -29,17 +31,18 @@
 # 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.
    You lose!  */
 struct group *getgrent ();
 
-#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
-# include <string.h>
-#else
-# include <strings.h>
-#endif
+#include <string.h>
 
 #define STREQ(s1, s2) ((strcmp (s1, s2) == 0))
 
@@ -92,6 +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;
+               }
            }
        }
     }