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2003-04-23  Ulrich Drepper  <drepper@redhat.com>

	* grp/initgroups.c (getgrouplist): Don't copy too much into the
	user buffer if more groups are found than fit into it.

	* nis/nss_nis/nis-initgroups.c (_nss_nis_initgroups_dyn): Use
	extend_alloca.
This commit is contained in:
Ulrich Drepper
2003-04-23 21:27:36 +00:00
parent 370b4d44dc
commit b9b9a51e49
3 changed files with 18 additions and 10 deletions
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8
grp/initgroups.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1989,91,93,1996-2001, 2002 Free Software Foundation, Inc.
/* Copyright (C) 1989,91,93,1996-2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -23,6 +23,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include <nsswitch.h>
@ -207,6 +208,9 @@ getgrouplist (const char *user, gid_t group, gid_t *groups, int *ngroups)
return -1;
result = internal_getgrouplist (user, group, &size, &newgroups, -1);
memcpy (groups, newgroups, MIN (*ngroups, result) * sizeof (gid_t));
if (result > *ngroups)
{
*ngroups = result;
@ -215,8 +219,6 @@ getgrouplist (const char *user, gid_t group, gid_t *groups, int *ngroups)
else
*ngroups = result;
memcpy (groups, newgroups, *ngroups * sizeof (gid_t));
free (newgroups);
return result;
}