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integrity: special fs magic

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Discussion on the mailing list questioned the use of these
magic values in userspace, concluding these values are already
exported to userspace via statfs and their correct/incorrect
usage is left up to the userspace application.

  - Move special fs magic number definitions to magic.h
  - Add magic.h include

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Reviewed-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Mimi Zohar 2008-10-07 14:00:12 -04:00 committed by James Morris
parent 93db628658
commit 9256292782
4 changed files with 7 additions and 7 deletions
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3
fs/debugfs/inode.c
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@ -26,8 +26,7 @@
#include <linux/debugfs.h>
#include <linux/fsnotify.h>
#include <linux/string.h>
#define DEBUGFS_MAGIC 0x64626720
#include <linux/magic.h>
static struct vfsmount *debugfs_mount;
static int debugfs_mount_count;

4
include/linux/magic.h
View file

@ -6,6 +6,10 @@
#define AFS_SUPER_MAGIC 0x5346414F
#define AUTOFS_SUPER_MAGIC 0x0187
#define CODA_SUPER_MAGIC 0x73757245
#define DEBUGFS_MAGIC 0x64626720
#define SYSFS_MAGIC 0x62656572
#define SECURITYFS_MAGIC 0x73636673
#define TMPFS_MAGIC 0x01021994
#define EFS_SUPER_MAGIC 0x414A53
#define EXT2_SUPER_MAGIC 0xEF53
#define EXT3_SUPER_MAGIC 0xEF53

4
mm/shmem.c
View file

@ -50,14 +50,12 @@
#include <linux/migrate.h>
#include <linux/highmem.h>
#include <linux/seq_file.h>
#include <linux/magic.h>
#include <asm/uaccess.h>
#include <asm/div64.h>
#include <asm/pgtable.h>
/* This magic number is used in glibc for posix shared memory */
#define TMPFS_MAGIC 0x01021994
#define ENTRIES_PER_PAGE (PAGE_CACHE_SIZE/sizeof(unsigned long))
#define ENTRIES_PER_PAGEPAGE (ENTRIES_PER_PAGE*ENTRIES_PER_PAGE)
#define BLOCKS_PER_PAGE (PAGE_CACHE_SIZE/512)

3
security/inode.c
View file

@ -20,8 +20,7 @@
#include <linux/init.h>
#include <linux/namei.h>
#include <linux/security.h>
#define SECURITYFS_MAGIC 0x73636673
#include <linux/magic.h>
static struct vfsmount *mount;
static int mount_count;