diff options
| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2008-10-07 14:00:12 -0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-10-13 09:47:43 +1100 |
| commit | 92562927826fceb2f8e69c89e28161b8c1e0b125 (patch) | |
| tree | e44f22406ea4d3753a4834feed7e7d271da28ab8 | |
| parent | 93db628658197aa46bd7f83d429908b6f187ec9c (diff) | |
| download | lwn-92562927826fceb2f8e69c89e28161b8c1e0b125.tar.gz lwn-92562927826fceb2f8e69c89e28161b8c1e0b125.zip | |
integrity: special fs magic
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>
| -rw-r--r-- | fs/debugfs/inode.c | 3 | ||||
| -rw-r--r-- | include/linux/magic.h | 4 | ||||
| -rw-r--r-- | mm/shmem.c | 4 | ||||
| -rw-r--r-- | security/inode.c | 3 |
4 files changed, 7 insertions, 7 deletions
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 08e28c9bb416..3dbe2169cf36 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -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; diff --git a/include/linux/magic.h b/include/linux/magic.h index 1fa0c2ce4dec..f7f3fdddbef0 100644 --- a/include/linux/magic.h +++ b/include/linux/magic.h @@ -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 diff --git a/mm/shmem.c b/mm/shmem.c index 04fb4f1ab88e..bf66d0191baf 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -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) diff --git a/security/inode.c b/security/inode.c index ca4958ebad8d..efea5a605466 100644 --- a/security/inode.c +++ b/security/inode.c @@ -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; |