.

[gnulib.git] / lib / userspec.c

diff --git a/lib/userspec.c b/lib/userspec.c
index 2ceb763..cb1f8a7 100644 (file)
--- a/lib/userspec.c
+++ b/lib/userspec.c
@@ -1,5 +1,5 @@
 /* userspec.c -- Parse a user and group string.
-   Copyright (C) 1989, 1990, 1991, 1992, 1997 Free Software Foundation, Inc.
+   Copyright (C) 1989-1992, 1997, 1998 Free Software Foundation, Inc.
 
    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
@@ -24,7 +24,7 @@
 #ifdef __GNUC__
 # define alloca __builtin_alloca
 #else
-# ifdef HAVE_ALLOCA_H
+# if HAVE_ALLOCA_H
 #  include <alloca.h>
 # else
 #  ifdef _AIX
@@ -85,14 +85,15 @@ struct group *getgrgid ();
 
 #define isdigit(c) ((c) >= '0' && (c) <= '9')
 
+#ifndef strdup
 char *strdup ();
+#endif
 
 /* Return nonzero if STR represents an unsigned decimal integer,
    otherwise return 0. */
 
 static int
-is_number (str)
-     const char *str;
+is_number (const char *str)
 {
   for (; *str; str++)
     if (!isdigit (*str))
@@ -113,11 +114,8 @@ is_number (str)
    Return NULL if successful, a static error message string if not.  */
 
 const char *
-parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
-     const char *spec_arg;
-     uid_t *uid;
-     gid_t *gid;
-     char **username_arg, **groupname_arg;
+parse_user_spec (const char *spec_arg, uid_t *uid, gid_t *gid,
+                char **username_arg, char **groupname_arg)
 {
   static const char *tired = "virtual memory exhausted";
   const char *error_msg;
@@ -153,6 +151,15 @@ parse_user_spec (spec_arg, uid, gid, username_arg, groupname_arg)
   if (u == NULL && g == NULL)
     return "can not omit both user and group";
 
+#ifdef __DJGPP__
+  /* Pretend that we are the user U whose group is G.  This makes
+     pwd and grp functions ``know'' about the UID and GID of these.  */
+  if (u && !is_number (u))
+    setenv ("USER", u, 1);
+  if (g && !is_number (g))
+    setenv ("GROUP", g, 1);
+#endif
+
   if (u != NULL)
     {
       pwd = getpwnam (u);