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lvm2/liblvm/lvm_misc.h
Tony Asleson eaeb33abd4 liblvm: Save off and restore umask values
lvm has a default umask value in the config file that defaults
to 0077 which lvm changes to during normal operation.  This
causes a problem when the code is used as a library with
liblvm as it is changing the umask for the process.  This
patch saves off the current umask, sets to what is specified
in the config file and restores it what it was on library
function call exit.

The user is now free to change the umask in their application at
anytime including between library calls.

This fix address BZ:
https://bugzilla.redhat.com/show_bug.cgi?id=1012113

Tested by setting umask to 0777 and running the python unit
test and verifying that umask is still same value as expected
at the test completion and with a successful run.

Signed-off-by: Tony Asleson <tasleson@redhat.com>
2013-12-20 13:36:22 -06:00

47 lines
1.4 KiB
C

/*
* Copyright (C) 2008-2013 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LVM2APP_MISC_H
#define _LVM2APP_MISC_H
#include "libdevmapper.h"
#include "lvm2app.h"
#include "metadata-exported.h"
#include "toolcontext.h"
#include <sys/types.h>
#include <sys/stat.h>
struct saved_env
{
mode_t user_umask;
};
struct saved_env store_user_env(struct cmd_context *cmd);
void restore_user_env(const struct saved_env *env);
struct dm_list *tag_list_copy(struct dm_pool *p, struct dm_list *tag_list);
struct lvm_property_value get_property(const pv_t pv, const vg_t vg,
const lv_t lv, const lvseg_t lvseg,
const pvseg_t pvseg,
const struct lvcreate_params *lvcp,
const struct pvcreate_params *pvcp,
const char *name);
int set_property(const pv_t pv, const vg_t vg, const lv_t lv,
struct lvcreate_params *lvcp,
struct pvcreate_params *pvcp,
const char *name,
struct lvm_property_value *value);
#endif