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Make it possible to compile strerror.c separately, unconditionally.
[gnulib.git]
/
lib
/
getgroups.c
diff --git
a/lib/getgroups.c
b/lib/getgroups.c
index
0ffe711
..
615bd4f
100644
(file)
--- a/
lib/getgroups.c
+++ b/
lib/getgroups.c
@@
-1,5
+1,6
@@
/* provide consistent interface to getgroups for systems that don't allow N==0
/* provide consistent interface to getgroups for systems that don't allow N==0
- Copyright (C) 1996, 1999, 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 1996, 1999, 2003, 2006 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
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
@@
-13,15
+14,18
@@
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
- Inc., 5
9 Temple Place - Suite 330, Boston, MA 02111-1307
, USA. */
+ Inc., 5
1 Franklin Street, Fifth Floor, Boston, MA 02110-1301
, USA. */
/* written by Jim Meyering */
#include <config.h>
/* written by Jim Meyering */
#include <config.h>
+
#include <stdio.h>
#include <sys/types.h>
#include <stdio.h>
#include <sys/types.h>
+#include <errno.h>
+#include <stdlib.h>
-char *xmalloc ();
+#include "xalloc.h"
/* On at least Ultrix 4.3 and NextStep 3.2, getgroups (0, 0) always fails.
On other systems, it returns the number of supplemental groups for the
/* On at least Ultrix 4.3 and NextStep 3.2, getgroups (0, 0) always fails.
On other systems, it returns the number of supplemental groups for the
@@
-29,10
+33,11
@@
char *xmalloc ();
provided function handle all others. */
int
provided function handle all others. */
int
-getgroups (
size_
t n, GETGROUPS_T *group)
+getgroups (
in
t n, GETGROUPS_T *group)
{
int n_groups;
GETGROUPS_T *gbuf;
{
int n_groups;
GETGROUPS_T *gbuf;
+ int saved_errno;
#undef getgroups
#undef getgroups
@@
-40,17
+45,22
@@
getgroups (size_t n, GETGROUPS_T *group)
return getgroups (n, group);
n = 20;
return getgroups (n, group);
n = 20;
- gbuf = NULL;
while (1)
{
while (1)
{
- gbuf = (GETGROUPS_T *) xrealloc (gbuf, n * sizeof (GETGROUPS_T));
+ /* No need to worry about address arithmetic overflow here,
+ since the ancient systems that we're running on have low
+ limits on the number of secondary groups. */
+ gbuf = xmalloc (n * sizeof *gbuf);
n_groups = getgroups (n, gbuf);
if (n_groups < n)
break;
n_groups = getgroups (n, gbuf);
if (n_groups < n)
break;
+ free (gbuf);
n += 10;
}
n += 10;
}
+ saved_errno = errno;
free (gbuf);
free (gbuf);
+ errno = saved_errno;
return n_groups;
}
return n_groups;
}