mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-15 00:34:10 +08:00
c002f42543
enable bit which is set appropriately and a per inode sparse disable
bit which is preset on some system file inodes as appropriate.
- Enforce that sparse support is disabled on NTFS volumes pre 3.0.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
|
|
* sysctl.c - Code for sysctl handling in NTFS Linux kernel driver. Part of
|
|
* the Linux-NTFS project. Adapted from the old NTFS driver,
|
|
* Copyright (C) 1997 Martin von Löwis, Régis Duchesne
|
|
*
|
|
* Copyright (c) 2002-2005 Anton Altaparmakov
|
|
*
|
|
* This program/include file is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as published
|
|
* by the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program/include file is distributed in the hope that it will be
|
|
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program (in the main directory of the Linux-NTFS
|
|
* distribution in the file COPYING); if not, write to the Free Software
|
|
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifdef DEBUG
|
|
|
|
#include <linux/module.h>
|
|
|
|
#ifdef CONFIG_SYSCTL
|
|
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/sysctl.h>
|
|
|
|
#include "sysctl.h"
|
|
#include "debug.h"
|
|
|
|
#define FS_NTFS 1
|
|
|
|
/* Definition of the ntfs sysctl. */
|
|
static ctl_table ntfs_sysctls[] = {
|
|
{ FS_NTFS, "ntfs-debug", /* Binary and text IDs. */
|
|
&debug_msgs,sizeof(debug_msgs), /* Data pointer and size. */
|
|
0644, NULL, &proc_dointvec }, /* Mode, child, proc handler. */
|
|
{ 0 }
|
|
};
|
|
|
|
/* Define the parent directory /proc/sys/fs. */
|
|
static ctl_table sysctls_root[] = {
|
|
{ CTL_FS, "fs", NULL, 0, 0555, ntfs_sysctls },
|
|
{ 0 }
|
|
};
|
|
|
|
/* Storage for the sysctls header. */
|
|
static struct ctl_table_header *sysctls_root_table = NULL;
|
|
|
|
/**
|
|
* ntfs_sysctl - add or remove the debug sysctl
|
|
* @add: add (1) or remove (0) the sysctl
|
|
*
|
|
* Add or remove the debug sysctl. Return 0 on success or -errno on error.
|
|
*/
|
|
int ntfs_sysctl(int add)
|
|
{
|
|
if (add) {
|
|
BUG_ON(sysctls_root_table);
|
|
sysctls_root_table = register_sysctl_table(sysctls_root, 0);
|
|
if (!sysctls_root_table)
|
|
return -ENOMEM;
|
|
#ifdef CONFIG_PROC_FS
|
|
/*
|
|
* If the proc filesystem is in use and we are a module, need
|
|
* to set the owner of our proc entry to our module. In the
|
|
* non-modular case, THIS_MODULE is NULL, so this is ok.
|
|
*/
|
|
ntfs_sysctls[0].de->owner = THIS_MODULE;
|
|
#endif
|
|
} else {
|
|
BUG_ON(!sysctls_root_table);
|
|
unregister_sysctl_table(sysctls_root_table);
|
|
sysctls_root_table = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_SYSCTL */
|
|
#endif /* DEBUG */
|