[RFC][PATCH] fs: Limit sys_mount to only loading filesystem modules.

From: Eric W. Biederman
Date: Sun Mar 03 2013 - 05:15:13 EST


Modify the request_module to prefix the file system type with "fs-"
and add aliases to all of the filesystems that can be built as modules
to match.

A common practice is to build all of the kernel code and leave code
that is not commonly needed as modules, with the result that many
users are exposed to any bug anywhere in the kernel.

Looking for filesystems with a fs- prefix limits the pool of possible
modules that can be loaded by mount to just filesystems trivially
making things safer with no real cost.

Using aliases means user space can control the policy of which
filesystem modules are auto-loaded by editing /etc/modprobe.d/*.conf
with blacklist and alias directives. Allowing simple, safe,
well understood work-arounds to known problematic software.

This also addresses a rare but unfortunate problem where the filesystem
name is not the same as it's module name and module auto-loading
would not work. While writing this patch I saw a handful of such
cases. The most significant being autofs that lives in the module
autofs4.

Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
arch/ia64/kernel/perfmon.c | 1 +
arch/powerpc/platforms/cell/spufs/inode.c | 1 +
arch/s390/hypfs/inode.c | 1 +
drivers/firmware/efivars.c | 1 +
drivers/infiniband/hw/ipath/ipath_fs.c | 1 +
drivers/infiniband/hw/qib/qib_fs.c | 1 +
drivers/misc/ibmasm/ibmasmfs.c | 1 +
drivers/mtd/mtdchar.c | 1 +
drivers/oprofile/oprofilefs.c | 1 +
drivers/staging/ccg/f_fs.c | 1 +
drivers/usb/gadget/f_fs.c | 1 +
drivers/usb/gadget/inode.c | 1 +
drivers/xen/xenfs/super.c | 1 +
fs/9p/vfs_super.c | 1 +
fs/adfs/super.c | 1 +
fs/affs/super.c | 1 +
fs/afs/super.c | 1 +
fs/autofs4/init.c | 1 +
fs/befs/linuxvfs.c | 1 +
fs/bfs/inode.c | 1 +
fs/binfmt_misc.c | 1 +
fs/btrfs/super.c | 1 +
fs/ceph/super.c | 1 +
fs/coda/inode.c | 1 +
fs/configfs/mount.c | 1 +
fs/cramfs/inode.c | 1 +
fs/debugfs/inode.c | 1 +
fs/devpts/inode.c | 1 +
fs/ecryptfs/main.c | 1 +
fs/efs/super.c | 1 +
fs/exofs/super.c | 1 +
fs/ext2/super.c | 1 +
fs/ext3/super.c | 1 +
fs/ext4/super.c | 5 +++--
fs/f2fs/super.c | 1 +
fs/fat/namei_msdos.c | 1 +
fs/fat/namei_vfat.c | 1 +
fs/filesystems.c | 2 +-
fs/freevxfs/vxfs_super.c | 2 +-
fs/fuse/control.c | 1 +
fs/fuse/inode.c | 2 ++
fs/gfs2/ops_fstype.c | 4 +++-
fs/hfs/super.c | 1 +
fs/hfsplus/super.c | 1 +
fs/hppfs/hppfs.c | 1 +
fs/hugetlbfs/inode.c | 1 +
fs/isofs/inode.c | 3 +--
fs/jffs2/super.c | 1 +
fs/jfs/super.c | 1 +
fs/logfs/super.c | 1 +
fs/minix/inode.c | 1 +
fs/ncpfs/inode.c | 1 +
fs/nfs/super.c | 3 ++-
fs/nfsd/nfsctl.c | 1 +
fs/nilfs2/super.c | 1 +
fs/ntfs/super.c | 1 +
fs/ocfs2/dlmfs/dlmfs.c | 1 +
fs/omfs/inode.c | 1 +
fs/openpromfs/inode.c | 1 +
fs/qnx4/inode.c | 1 +
fs/qnx6/inode.c | 1 +
fs/reiserfs/super.c | 1 +
fs/romfs/super.c | 1 +
fs/sysv/super.c | 3 ++-
fs/ubifs/super.c | 1 +
fs/ufs/super.c | 1 +
fs/xfs/xfs_super.c | 1 +
include/linux/fs.h | 2 ++
net/sunrpc/rpc_pipe.c | 4 +---
69 files changed, 77 insertions(+), 12 deletions(-)

diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index ea39eba..db6e866 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -619,6 +619,7 @@ static struct file_system_type pfm_fs_type = {
.mount = pfmfs_mount,
.kill_sb = kill_anon_super,
};
+MODULE_ALIAS_FS("pfmfs");

DEFINE_PER_CPU(unsigned long, pfm_syst_info);
DEFINE_PER_CPU(struct task_struct *, pmu_owner);
diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c
index dba1ce2..db6d080 100644
--- a/arch/powerpc/platforms/cell/spufs/inode.c
+++ b/arch/powerpc/platforms/cell/spufs/inode.c
@@ -771,6 +771,7 @@ static struct file_system_type spufs_type = {
.mount = spufs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("spufs");

static int __init spufs_init(void)
{
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 06ea69b..50d9bde 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -458,6 +458,7 @@ static struct file_system_type hypfs_type = {
.mount = hypfs_mount,
.kill_sb = hypfs_kill_super
};
+MODULE_ALIAS_FS("s390_hypfs");

static const struct super_operations hypfs_s_ops = {
.statfs = simple_statfs,
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index fed08b6..6881e2e 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -1116,6 +1116,7 @@ static struct file_system_type efivarfs_type = {
.mount = efivarfs_mount,
.kill_sb = efivarfs_kill_sb,
};
+MODULE_ALIAS_FS("efivarfs");

static const struct inode_operations efivarfs_dir_inode_operations = {
.lookup = simple_lookup,
diff --git a/drivers/infiniband/hw/ipath/ipath_fs.c b/drivers/infiniband/hw/ipath/ipath_fs.c
index a4de9d5..2c082cd 100644
--- a/drivers/infiniband/hw/ipath/ipath_fs.c
+++ b/drivers/infiniband/hw/ipath/ipath_fs.c
@@ -410,6 +410,7 @@ static struct file_system_type ipathfs_fs_type = {
.mount = ipathfs_mount,
.kill_sb = ipathfs_kill_super,
};
+MODULE_ALIAS_FS("ipathfs");

int __init ipath_init_ipathfs(void)
{
diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c
index 65a2a23..9566ceb 100644
--- a/drivers/infiniband/hw/qib/qib_fs.c
+++ b/drivers/infiniband/hw/qib/qib_fs.c
@@ -604,6 +604,7 @@ static struct file_system_type qibfs_fs_type = {
.mount = qibfs_mount,
.kill_sb = qibfs_kill_super,
};
+MODULE_ALIAS_FS("ipathfs");

int __init qib_init_qibfs(void)
{
diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index 6673e57..ce5b756 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -110,6 +110,7 @@ static struct file_system_type ibmasmfs_type = {
.mount = ibmasmfs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("ibmasmfs");

static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent)
{
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 82c0616..92ab30a 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -1238,6 +1238,7 @@ static struct file_system_type mtd_inodefs_type = {
.mount = mtd_inodefs_mount,
.kill_sb = kill_anon_super,
};
+MODULE_ALIAS_FS("mtd_inodefs");

static int __init init_mtdchar(void)
{
diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index 849357c..55e3646 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -266,6 +266,7 @@ static struct file_system_type oprofilefs_type = {
.mount = oprofilefs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("oprofilefs");


int __init oprofilefs_register(void)
diff --git a/drivers/staging/ccg/f_fs.c b/drivers/staging/ccg/f_fs.c
index 8adc79d..f6373da 100644
--- a/drivers/staging/ccg/f_fs.c
+++ b/drivers/staging/ccg/f_fs.c
@@ -1223,6 +1223,7 @@ static struct file_system_type ffs_fs_type = {
.mount = ffs_fs_mount,
.kill_sb = ffs_fs_kill_sb,
};
+MODULE_ALIAS_FS("functionfs");


/* Driver's main init/cleanup functions *************************************/
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index 38388d7..c377ff8 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -1235,6 +1235,7 @@ static struct file_system_type ffs_fs_type = {
.mount = ffs_fs_mount,
.kill_sb = ffs_fs_kill_sb,
};
+MODULE_ALIAS_FS("functionfs");


/* Driver's main init/cleanup functions *************************************/
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 8ac840f..e2b2e9c 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -2105,6 +2105,7 @@ static struct file_system_type gadgetfs_type = {
.mount = gadgetfs_mount,
.kill_sb = gadgetfs_kill_sb,
};
+MODULE_ALIAS_FS("gadgetfs");

/*----------------------------------------------------------------------*/

diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c
index 459b9ac..891d83f 100644
--- a/drivers/xen/xenfs/super.c
+++ b/drivers/xen/xenfs/super.c
@@ -119,6 +119,7 @@ static struct file_system_type xenfs_type = {
.mount = xenfs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("xenfs");

static int __init xenfs_init(void)
{
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 137d503..17368f4 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -365,3 +365,4 @@ struct file_system_type v9fs_fs_type = {
.owner = THIS_MODULE,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT,
};
+MODULE_ALIAS_FS("9p");
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index d571229..0ff4bae 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -524,6 +524,7 @@ static struct file_system_type adfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("adfs");

static int __init init_adfs_fs(void)
{
diff --git a/fs/affs/super.c b/fs/affs/super.c
index b84dc73..45161a8 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -622,6 +622,7 @@ static struct file_system_type affs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("affs");

static int __init init_affs_fs(void)
{
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 7c31ec3..c486155 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -45,6 +45,7 @@ struct file_system_type afs_fs_type = {
.kill_sb = afs_kill_super,
.fs_flags = 0,
};
+MODULE_ALIAS_FS("afs");

static const struct super_operations afs_super_ops = {
.statfs = afs_statfs,
diff --git a/fs/autofs4/init.c b/fs/autofs4/init.c
index cddc74b..b3db517 100644
--- a/fs/autofs4/init.c
+++ b/fs/autofs4/init.c
@@ -26,6 +26,7 @@ static struct file_system_type autofs_fs_type = {
.mount = autofs_mount,
.kill_sb = autofs4_kill_sb,
};
+MODULE_ALIAS_FS("autofs");

static int __init init_autofs4_fs(void)
{
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 2b3bda8..8613785 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -951,6 +951,7 @@ static struct file_system_type befs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("befs");

static int __init
init_befs_fs(void)
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 737aaa3..5e376bb 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -473,6 +473,7 @@ static struct file_system_type bfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("bfs");

static int __init init_bfs_fs(void)
{
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index 0c8869f..65f91ec 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -720,6 +720,7 @@ static struct file_system_type bm_fs_type = {
.mount = bm_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("binfmt_misc");

static int __init init_misc_binfmt(void)
{
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index d8982e9..fe51afd 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1518,6 +1518,7 @@ static struct file_system_type btrfs_fs_type = {
.kill_sb = btrfs_kill_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("btrfs");

/*
* used by btrfsctl to scan devices when no FS is mounted
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index e86aa994..0a25c04 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -947,6 +947,7 @@ static struct file_system_type ceph_fs_type = {
.kill_sb = ceph_kill_sb,
.fs_flags = FS_RENAME_DOES_D_MOVE,
};
+MODULE_ALIAS_FS("ceph");

#define _STRINGIFY(x) #x
#define STRINGIFY(x) _STRINGIFY(x)
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index cf674e9..5075f81 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -329,4 +329,5 @@ struct file_system_type coda_fs_type = {
.kill_sb = kill_anon_super,
.fs_flags = FS_BINARY_MOUNTDATA,
};
+MODULE_ALIAS_FS("coda");

diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index aee0a7e..7f26c3c 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -114,6 +114,7 @@ static struct file_system_type configfs_fs_type = {
.mount = configfs_do_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("configfs");

struct dentry *configfs_pin_fs(void)
{
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index c6c3f91..3f79599 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -573,6 +573,7 @@ static struct file_system_type cramfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("cramfs");

static int __init init_cramfs_fs(void)
{
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 0c4f80b..4888cb3 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -299,6 +299,7 @@ static struct file_system_type debug_fs_type = {
.mount = debug_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("debugfs");

static struct dentry *__create_file(const char *name, umode_t mode,
struct dentry *parent, void *data,
diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index f0f0faa..741626f 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -380,6 +380,7 @@ static struct file_system_type devpts_fs_type = {
.kill_sb = devpts_kill_sb,
.fs_flags = FS_USERNS_MOUNT | FS_USERNS_DEV_MOUNT,
};
+MODULE_ALIAS_FS("devpts");

struct vfsmount *devpts_mntget(struct file *filp)
{
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 4e0886c..e924cf4 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -629,6 +629,7 @@ static struct file_system_type ecryptfs_fs_type = {
.kill_sb = ecryptfs_kill_block_super,
.fs_flags = 0
};
+MODULE_ALIAS_FS("ecryptfs");

/**
* inode_info_init_once
diff --git a/fs/efs/super.c b/fs/efs/super.c
index 2002431..c6f57a7 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -33,6 +33,7 @@ static struct file_system_type efs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("efs");

static struct pt_types sgi_pt_types[] = {
{0x00, "SGI vh"},
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index 5e59280..9d97633 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -1010,6 +1010,7 @@ static struct file_system_type exofs_type = {
.mount = exofs_mount,
.kill_sb = generic_shutdown_super,
};
+MODULE_ALIAS_FS("exofs");

static int __init init_exofs(void)
{
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index c25c56b..6438912 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1542,6 +1542,7 @@ static struct file_system_type ext2_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV | FS_USERNS_MOUNT,
};
+MODULE_ALIAS_FS("ext2");

static int __init init_ext2_fs(void)
{
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 4ba2683..d59852d 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -3059,6 +3059,7 @@ static struct file_system_type ext3_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ext3");

static int __init init_ext3_fs(void)
{
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3d4fb81..b3264ba 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -92,6 +92,7 @@ static struct file_system_type ext2_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ext2");
#define IS_EXT2_SB(sb) ((sb)->s_bdev->bd_holder == &ext2_fs_type)
#else
#define IS_EXT2_SB(sb) (0)
@@ -106,6 +107,7 @@ static struct file_system_type ext3_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ext3");
#define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type)
#else
#define IS_EXT3_SB(sb) (0)
@@ -5194,7 +5196,6 @@ static inline int ext2_feature_set_ok(struct super_block *sb)
return 0;
return 1;
}
-MODULE_ALIAS("ext2");
#else
static inline void register_as_ext2(void) { }
static inline void unregister_as_ext2(void) { }
@@ -5227,7 +5228,6 @@ static inline int ext3_feature_set_ok(struct super_block *sb)
return 0;
return 1;
}
-MODULE_ALIAS("ext3");
#else
static inline void register_as_ext3(void) { }
static inline void unregister_as_ext3(void) { }
@@ -5241,6 +5241,7 @@ static struct file_system_type ext4_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ext4");

static int __init ext4_init_feat_adverts(void)
{
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 37fad04..45ebdb6 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -639,6 +639,7 @@ static struct file_system_type f2fs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("f2fs");

static int __init init_inodecache(void)
{
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index e2cfda9..081b759 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -668,6 +668,7 @@ static struct file_system_type msdos_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("msdos");

static int __init init_msdos_fs(void)
{
diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index ac959d6..2da9520 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -1073,6 +1073,7 @@ static struct file_system_type vfat_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("vfat");

static int __init init_vfat_fs(void)
{
diff --git a/fs/filesystems.c b/fs/filesystems.c
index 71f9be2..490f48c 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -274,7 +274,7 @@ struct file_system_type *get_fs_type(const char *name)

fs = __get_fs_type(name, len);
if (!fs && capable(CAP_SYS_ADMIN) &&
- (request_module("%.*s", len, name) == 0))
+ (request_module("fs-%.*s", len, name) == 0))
fs = __get_fs_type(name, len);

if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c
index fed2c8a..4550743 100644
--- a/fs/freevxfs/vxfs_super.c
+++ b/fs/freevxfs/vxfs_super.c
@@ -52,7 +52,6 @@ MODULE_AUTHOR("Christoph Hellwig");
MODULE_DESCRIPTION("Veritas Filesystem (VxFS) driver");
MODULE_LICENSE("Dual BSD/GPL");

-MODULE_ALIAS("vxfs"); /* makes mount -t vxfs autoload the module */


static void vxfs_put_super(struct super_block *);
@@ -258,6 +257,7 @@ static struct file_system_type vxfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("vxfs"); /* makes mount -t vxfs autoload the module */

static int __init
vxfs_init(void)
diff --git a/fs/fuse/control.c b/fs/fuse/control.c
index 75a20c0..895cc91 100644
--- a/fs/fuse/control.c
+++ b/fs/fuse/control.c
@@ -341,6 +341,7 @@ static struct file_system_type fuse_ctl_fs_type = {
.mount = fuse_ctl_mount,
.kill_sb = fuse_ctl_kill_sb,
};
+MODULE_ALIAS_FS("fusectl");

int __init fuse_ctl_init(void)
{
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index d022569..6ab1666 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1127,6 +1127,7 @@ static struct file_system_type fuse_fs_type = {
.mount = fuse_mount,
.kill_sb = fuse_kill_sb_anon,
};
+MODULE_ALIAS_FS("fuse");

#ifdef CONFIG_BLOCK
static struct dentry *fuse_mount_blk(struct file_system_type *fs_type,
@@ -1156,6 +1157,7 @@ static struct file_system_type fuseblk_fs_type = {
.kill_sb = fuse_kill_sb_blk,
.fs_flags = FS_REQUIRES_DEV | FS_HAS_SUBTYPE,
};
+MODULE_ALIAS_FS("fuseblk");

static inline int register_fuseblk(void)
{
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 1b612be..60ede2a 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -20,6 +20,7 @@
#include <linux/gfs2_ondisk.h>
#include <linux/quotaops.h>
#include <linux/lockdep.h>
+#include <linux/module.h>

#include "gfs2.h"
#include "incore.h"
@@ -1425,6 +1426,7 @@ struct file_system_type gfs2_fs_type = {
.kill_sb = gfs2_kill_sb,
.owner = THIS_MODULE,
};
+MODULE_ALIAS_FS("gfs2");

struct file_system_type gfs2meta_fs_type = {
.name = "gfs2meta",
@@ -1432,4 +1434,4 @@ struct file_system_type gfs2meta_fs_type = {
.mount = gfs2_mount_meta,
.owner = THIS_MODULE,
};
-
+MODULE_ALIAS_FS("gfs2meta");
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index e93ddaa..bbaaa8a 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -466,6 +466,7 @@ static struct file_system_type hfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("hfs");

static void hfs_init_once(void *p)
{
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 796198d..d2e1718 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -618,6 +618,7 @@ static struct file_system_type hfsplus_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("hfsplus");

static void hfsplus_init_once(void *p)
{
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 43b315f..3eefbcc 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -748,6 +748,7 @@ static struct file_system_type hppfs_type = {
.kill_sb = kill_anon_super,
.fs_flags = 0,
};
+MODULE_ALIAS_FS("hppfs");

static int __init init_hppfs(void)
{
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 78bde32..81d1cb4 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -896,6 +896,7 @@ static struct file_system_type hugetlbfs_fs_type = {
.mount = hugetlbfs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("hugetlbfs");

static struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];

diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 67ce525..a67f16e 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -1556,6 +1556,7 @@ static struct file_system_type iso9660_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("iso9660");

static int __init init_iso9660_fs(void)
{
@@ -1593,5 +1594,3 @@ static void __exit exit_iso9660_fs(void)
module_init(init_iso9660_fs)
module_exit(exit_iso9660_fs)
MODULE_LICENSE("GPL");
-/* Actual filesystem name is iso9660, as requested in filesystems.c */
-MODULE_ALIAS("iso9660");
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index d3d8799..0defb1c 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -356,6 +356,7 @@ static struct file_system_type jffs2_fs_type = {
.mount = jffs2_mount,
.kill_sb = jffs2_kill_sb,
};
+MODULE_ALIAS_FS("jffs2");

static int __init init_jffs2_fs(void)
{
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 060ba63..2003e83 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -833,6 +833,7 @@ static struct file_system_type jfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("jfs");

static void init_once(void *foo)
{
diff --git a/fs/logfs/super.c b/fs/logfs/super.c
index 345c24b..5436029 100644
--- a/fs/logfs/super.c
+++ b/fs/logfs/super.c
@@ -608,6 +608,7 @@ static struct file_system_type logfs_fs_type = {
.fs_flags = FS_REQUIRES_DEV,

};
+MODULE_ALIAS_FS("logfs");

static int __init logfs_init(void)
{
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 99541cc..df12249 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -660,6 +660,7 @@ static struct file_system_type minix_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("minix");

static int __init init_minix_fs(void)
{
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index e2be336..38b4fe1 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -1051,6 +1051,7 @@ static struct file_system_type ncp_fs_type = {
.kill_sb = kill_anon_super,
.fs_flags = FS_BINARY_MOUNTDATA,
};
+MODULE_ALIAS_FS("ncpfs");

static int __init init_ncp_fs(void)
{
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index befbae0..e11a863 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -293,6 +293,7 @@ struct file_system_type nfs_fs_type = {
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
+MODULE_ALIAS_FS("nfs");
EXPORT_SYMBOL_GPL(nfs_fs_type);

struct file_system_type nfs_xdev_fs_type = {
@@ -332,6 +333,7 @@ struct file_system_type nfs4_fs_type = {
.kill_sb = nfs_kill_super,
.fs_flags = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
+MODULE_ALIAS_FS("nfs4");
EXPORT_SYMBOL_GPL(nfs4_fs_type);

static int __init register_nfs4_fs(void)
@@ -2716,6 +2718,5 @@ module_param(send_implementation_id, ushort, 0644);
MODULE_PARM_DESC(send_implementation_id,
"Send implementation ID with NFSv4.1 exchange_id");
MODULE_PARM_DESC(nfs4_unique_id, "nfs_client_id4 uniquifier string");
-MODULE_ALIAS("nfs4");

#endif /* CONFIG_NFS_V4 */
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 7493428..939bfd9 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1052,6 +1052,7 @@ static struct file_system_type nfsd_fs_type = {
.mount = nfsd_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("nfsd");

#ifdef CONFIG_PROC_FS
static int create_proc_exports_entry(void)
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 3c991dc..c7d1f9f 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1361,6 +1361,7 @@ struct file_system_type nilfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("nilfs2");

static void nilfs_inode_init_once(void *obj)
{
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 4a8289f8..82650d5 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -3079,6 +3079,7 @@ static struct file_system_type ntfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ntfs");

/* Stable names for the slab caches. */
static const char ntfs_index_ctx_cache_name[] = "ntfs_index_ctx_cache";
diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
index 16b712d..9259d78 100644
--- a/fs/ocfs2/dlmfs/dlmfs.c
+++ b/fs/ocfs2/dlmfs/dlmfs.c
@@ -640,6 +640,7 @@ static struct file_system_type dlmfs_fs_type = {
.mount = dlmfs_mount,
.kill_sb = kill_litter_super,
};
+MODULE_ALIAS_FS("ocfs2_dlmfs");

static int __init init_dlmfs_fs(void)
{
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index 25d715c..d8b0afd 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -572,6 +572,7 @@ static struct file_system_type omfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("omfs");

static int __init init_omfs_fs(void)
{
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index 2ad080f..66abc26 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -432,6 +432,7 @@ static struct file_system_type openprom_fs_type = {
.mount = openprom_mount,
.kill_sb = kill_anon_super,
};
+MODULE_ALIAS_FS("openpromfs");

static void op_inode_init_once(void *data)
{
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index 43098bb..2e8caa6 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -412,6 +412,7 @@ static struct file_system_type qnx4_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("qnx4");

static int __init init_qnx4_fs(void)
{
diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c
index 57199a5..8d941ed 100644
--- a/fs/qnx6/inode.c
+++ b/fs/qnx6/inode.c
@@ -672,6 +672,7 @@ static struct file_system_type qnx6_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("qnx6");

static int __init init_qnx6_fs(void)
{
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 418bdc3..194113b 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -2434,6 +2434,7 @@ struct file_system_type reiserfs_fs_type = {
.kill_sb = reiserfs_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("reiserfs");

MODULE_DESCRIPTION("ReiserFS journaled filesystem");
MODULE_AUTHOR("Hans Reiser <reiser@xxxxxxxxxxx>");
diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index fd7c5f6..42e3d06 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -599,6 +599,7 @@ static struct file_system_type romfs_fs_type = {
.kill_sb = romfs_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("romfs");

/*
* inode storage initialiser
diff --git a/fs/sysv/super.c b/fs/sysv/super.c
index a38e87b..a39938b 100644
--- a/fs/sysv/super.c
+++ b/fs/sysv/super.c
@@ -545,6 +545,7 @@ static struct file_system_type sysv_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("sysv");

static struct file_system_type v7_fs_type = {
.owner = THIS_MODULE,
@@ -553,6 +554,7 @@ static struct file_system_type v7_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("v7");

static int __init init_sysv_fs(void)
{
@@ -586,5 +588,4 @@ static void __exit exit_sysv_fs(void)

module_init(init_sysv_fs)
module_exit(exit_sysv_fs)
-MODULE_ALIAS("v7");
MODULE_LICENSE("GPL");
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index ddc0f6a..ac838b8 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -2174,6 +2174,7 @@ static struct file_system_type ubifs_fs_type = {
.mount = ubifs_mount,
.kill_sb = kill_ubifs_super,
};
+MODULE_ALIAS_FS("ubifs");

/*
* Inode slab cache constructor.
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index dc8e3a8..329f2f5 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1500,6 +1500,7 @@ static struct file_system_type ufs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("ufs");

static int __init init_ufs_fs(void)
{
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index c407121..ea341ce 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1561,6 +1561,7 @@ static struct file_system_type xfs_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("xfs");

STATIC int __init
xfs_init_zones(void)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d0a246d..f4b68f5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1829,6 +1829,8 @@ struct file_system_type {
struct lock_class_key i_mutex_dir_key;
};

+#define MODULE_ALIAS_FS(NAME) MODULE_ALIAS("fs-" NAME)
+
extern struct dentry *mount_ns(struct file_system_type *fs_type, int flags,
void *data, int (*fill_super)(struct super_block *, void *, int));
extern struct dentry *mount_bdev(struct file_system_type *fs_type,
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index fd10981..6e86b2c 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -1174,6 +1174,7 @@ static struct file_system_type rpc_pipe_fs_type = {
.mount = rpc_mount,
.kill_sb = rpc_kill_sb,
};
+MODULE_ALIAS_FS("rpc_pipefs");

static void
init_once(void *foo)
@@ -1218,6 +1219,3 @@ void unregister_rpc_pipefs(void)
kmem_cache_destroy(rpc_inode_cachep);
unregister_filesystem(&rpc_pipe_fs_type);
}
-
-/* Make 'mount -t rpc_pipefs ...' autoload this module. */
-MODULE_ALIAS("rpc_pipefs");
--
1.7.5.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/