Commit 505b050f authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs mount API prep from Al Viro:
 "Mount API prereqs.

  Mostly that's LSM mount options cleanups. There are several minor
  fixes in there, but nothing earth-shattering (leaks on failure exits,
  mostly)"

* 'mount.part1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (27 commits)
  mount_fs: suppress MAC on MS_SUBMOUNT as well as MS_KERNMOUNT
  smack: rewrite smack_sb_eat_lsm_opts()
  smack: get rid of match_token()
  smack: take the guts of smack_parse_opts_str() into a new helper
  LSM: new method: ->sb_add_mnt_opt()
  selinux: rewrite selinux_sb_eat_lsm_opts()
  selinux: regularize Opt_... names a bit
  selinux: switch away from match_token()
  selinux: new helper - selinux_add_opt()
  LSM: bury struct security_mnt_opts
  smack: switch to private smack_mnt_opts
  selinux: switch to private struct selinux_mnt_opts
  LSM: hide struct security_mnt_opts from any generic code
  selinux: kill selinux_sb_get_mnt_opts()
  LSM: turn sb_eat_lsm_opts() into a method
  nfs_remount(): don't leak, don't ignore LSM options quietly
  btrfs: sanitize security_mnt_opts use
  selinux; don't open-code a loop in sb_finish_set_opts()
  LSM: split ->sb_set_mnt_opts() out of ->sb_kern_mount()
  new helper: security_sb_eat_lsm_opts()
  ...
parents 9b286efe 718c4303
......@@ -19,6 +19,7 @@
#include <linux/of_fdt.h>
#include <linux/of.h>
#include <linux/cache.h>
#include <uapi/linux/mount.h>
#include <asm/sections.h>
#include <asm/arcregs.h>
#include <asm/tlb.h>
......
......@@ -24,6 +24,7 @@
#include <linux/root_dev.h>
#include <linux/screen_info.h>
#include <linux/memblock.h>
#include <uapi/linux/mount.h>
#include <asm/setup.h>
#include <asm/system_info.h>
......
......@@ -32,6 +32,7 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/uaccess.h>
#include <uapi/linux/mount.h>
#include <asm/io.h>
#include <asm/page.h>
#include <asm/elf.h>
......
......@@ -34,6 +34,7 @@
#include <linux/kdebug.h>
#include <linux/export.h>
#include <linux/start_kernel.h>
#include <uapi/linux/mount.h>
#include <asm/io.h>
#include <asm/processor.h>
......
......@@ -33,6 +33,7 @@
#include <linux/module.h>
#include <linux/start_kernel.h>
#include <linux/memblock.h>
#include <uapi/linux/mount.h>
#include <asm/io.h>
#include <asm/processor.h>
......
......@@ -50,6 +50,7 @@
#include <linux/kvm_para.h>
#include <linux/dma-contiguous.h>
#include <xen/xen.h>
#include <uapi/linux/mount.h>
#include <linux/errno.h>
#include <linux/kernel.h>
......
......@@ -25,6 +25,7 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/kthread.h>
#include <uapi/linux/mount.h>
#include "base.h"
static struct task_struct *thread;
......
......@@ -1144,9 +1144,6 @@ struct btrfs_fs_info {
struct mutex unused_bg_unpin_mutex;
struct mutex delete_unused_bgs_mutex;
/* For btrfs to record security options */
struct security_mnt_opts security_opts;
/*
* Chunks that can't be freed yet (under a trim/discard operation)
* and will be latter freed. Protected by fs_info->chunk_mutex.
......@@ -3021,7 +3018,6 @@ static inline void free_fs_info(struct btrfs_fs_info *fs_info)
kfree(fs_info->free_space_root);
kfree(fs_info->super_copy);
kfree(fs_info->super_for_commit);
security_free_mnt_opts(&fs_info->security_opts);
kvfree(fs_info);
}
......
......@@ -1458,56 +1458,6 @@ static struct dentry *mount_subvol(const char *subvol_name, u64 subvol_objectid,
return root;
}
static int parse_security_options(char *orig_opts,
struct security_mnt_opts *sec_opts)
{
char *secdata = NULL;
int ret = 0;
secdata = alloc_secdata();
if (!secdata)
return -ENOMEM;
ret = security_sb_copy_data(orig_opts, secdata);
if (ret) {
free_secdata(secdata);
return ret;
}
ret = security_sb_parse_opts_str(secdata, sec_opts);
free_secdata(secdata);
return ret;
}
static int setup_security_options(struct btrfs_fs_info *fs_info,
struct super_block *sb,
struct security_mnt_opts *sec_opts)
{
int ret = 0;
/*
* Call security_sb_set_mnt_opts() to check whether new sec_opts
* is valid.
*/
ret = security_sb_set_mnt_opts(sb, sec_opts, 0, NULL);
if (ret)
return ret;
#ifdef CONFIG_SECURITY
if (!fs_info->security_opts.num_mnt_opts) {
/* first time security setup, copy sec_opts to fs_info */
memcpy(&fs_info->security_opts, sec_opts, sizeof(*sec_opts));
} else {
/*
* Since SELinux (the only one supporting security_mnt_opts)
* does NOT support changing context during remount/mount of
* the same sb, this must be the same or part of the same
* security options, just free it.
*/
security_free_mnt_opts(sec_opts);
}
#endif
return ret;
}
/*
* Find a superblock for the given device / mount point.
*
......@@ -1522,16 +1472,15 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
struct btrfs_device *device = NULL;
struct btrfs_fs_devices *fs_devices = NULL;
struct btrfs_fs_info *fs_info = NULL;
struct security_mnt_opts new_sec_opts;
void *new_sec_opts = NULL;
fmode_t mode = FMODE_READ;
int error = 0;
if (!(flags & SB_RDONLY))
mode |= FMODE_WRITE;
security_init_mnt_opts(&new_sec_opts);
if (data) {
error = parse_security_options(data, &new_sec_opts);
error = security_sb_eat_lsm_opts(data, &new_sec_opts);
if (error)
return ERR_PTR(error);
}
......@@ -1550,7 +1499,6 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
fs_info->super_copy = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_KERNEL);
fs_info->super_for_commit = kzalloc(BTRFS_SUPER_INFO_SIZE, GFP_KERNEL);
security_init_mnt_opts(&fs_info->security_opts);
if (!fs_info->super_copy || !fs_info->super_for_commit) {
error = -ENOMEM;
goto error_fs_info;
......@@ -1601,16 +1549,12 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
btrfs_sb(s)->bdev_holder = fs_type;
error = btrfs_fill_super(s, fs_devices, data);
}
if (!error)
error = security_sb_set_mnt_opts(s, new_sec_opts, 0, NULL);
security_free_mnt_opts(&new_sec_opts);
if (error) {
deactivate_locked_super(s);
goto error_sec_opts;
}
fs_info = btrfs_sb(s);
error = setup_security_options(fs_info, s, &new_sec_opts);
if (error) {
deactivate_locked_super(s);
goto error_sec_opts;
return ERR_PTR(error);
}
return dget(s->s_root);
......@@ -1779,18 +1723,14 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
btrfs_remount_prepare(fs_info);
if (data) {
struct security_mnt_opts new_sec_opts;
void *new_sec_opts = NULL;
security_init_mnt_opts(&new_sec_opts);
ret = parse_security_options(data, &new_sec_opts);
ret = security_sb_eat_lsm_opts(data, &new_sec_opts);
if (!ret)
ret = security_sb_remount(sb, new_sec_opts);
security_free_mnt_opts(&new_sec_opts);
if (ret)
goto restore;
ret = setup_security_options(fs_info, sb,
&new_sec_opts);
if (ret) {
security_free_mnt_opts(&new_sec_opts);
goto restore;
}
}
ret = btrfs_parse_options(fs_info, data, *flags);
......
......@@ -705,21 +705,18 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info *sbi,
/*
* Read the superblock from the OSD and fill in the fields
*/
static int exofs_fill_super(struct super_block *sb, void *data, int silent)
static int exofs_fill_super(struct super_block *sb,
struct exofs_mountopt *opts,
struct exofs_sb_info *sbi,
int silent)
{
struct inode *root;
struct exofs_mountopt *opts = data;
struct exofs_sb_info *sbi; /*extended info */
struct osd_dev *od; /* Master device */
struct exofs_fscb fscb; /*on-disk superblock info */
struct ore_comp comp;
unsigned table_count;
int ret;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
/* use mount options to fill superblock */
if (opts->is_osdname) {
struct osd_dev_info odi = {.systemid_len = 0};
......@@ -863,7 +860,9 @@ static struct dentry *exofs_mount(struct file_system_type *type,
int flags, const char *dev_name,
void *data)
{
struct super_block *s;
struct exofs_mountopt opts;
struct exofs_sb_info *sbi;
int ret;
ret = parse_options(data, &opts);
......@@ -872,9 +871,31 @@ static struct dentry *exofs_mount(struct file_system_type *type,
return ERR_PTR(ret);
}
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
if (!sbi) {
kfree(opts.dev_name);
return ERR_PTR(-ENOMEM);
}
s = sget(type, NULL, set_anon_super, flags, NULL);
if (IS_ERR(s)) {
kfree(opts.dev_name);
kfree(sbi);
return ERR_CAST(s);
}
if (!opts.dev_name)
opts.dev_name = dev_name;
return mount_nodev(type, flags, &opts, exofs_fill_super);
ret = exofs_fill_super(s, &opts, sbi, flags & SB_SILENT ? 1 : 0);
if (ret) {
deactivate_locked_super(s);
return ERR_PTR(ret);
}
s->s_flags |= SB_ACTIVE;
return dget(s->s_root);
}
/*
......
......@@ -26,6 +26,7 @@
#include <linux/memblock.h>
#include <linux/task_work.h>
#include <linux/sched/task.h>
#include <uapi/linux/mount.h>
#include "pnode.h"
#include "internal.h"
......@@ -245,13 +246,9 @@ static struct mount *alloc_vfsmnt(const char *name)
* mnt_want/drop_write() will _keep_ the filesystem
* r/w.
*/
int __mnt_is_readonly(struct vfsmount *mnt)
bool __mnt_is_readonly(struct vfsmount *mnt)
{
if (mnt->mnt_flags & MNT_READONLY)
return 1;
if (sb_rdonly(mnt->mnt_sb))
return 1;
return 0;
return (mnt->mnt_flags & MNT_READONLY) || sb_rdonly(mnt->mnt_sb);
}
EXPORT_SYMBOL_GPL(__mnt_is_readonly);
......@@ -507,11 +504,12 @@ static int mnt_make_readonly(struct mount *mnt)
return ret;
}
static void __mnt_unmake_readonly(struct mount *mnt)
static int __mnt_unmake_readonly(struct mount *mnt)
{
lock_mount_hash();
mnt->mnt.mnt_flags &= ~MNT_READONLY;
unlock_mount_hash();
return 0;
}
int sb_prepare_remount_readonly(struct super_block *sb)
......@@ -2215,21 +2213,91 @@ static int do_loopback(struct path *path, const char *old_name,
return err;
}
static int change_mount_flags(struct vfsmount *mnt, int ms_flags)
/*
* Don't allow locked mount flags to be cleared.
*
* No locks need to be held here while testing the various MNT_LOCK
* flags because those flags can never be cleared once they are set.
*/
static bool can_change_locked_flags(struct mount *mnt, unsigned int mnt_flags)
{
int error = 0;
int readonly_request = 0;
unsigned int fl = mnt->mnt.mnt_flags;
if ((fl & MNT_LOCK_READONLY) &&
!(mnt_flags & MNT_READONLY))
return false;
if (ms_flags & MS_RDONLY)
readonly_request = 1;
if (readonly_request == __mnt_is_readonly(mnt))
if ((fl & MNT_LOCK_NODEV) &&
!(mnt_flags & MNT_NODEV))
return false;
if ((fl & MNT_LOCK_NOSUID) &&
!(mnt_flags & MNT_NOSUID))
return false;
if ((fl & MNT_LOCK_NOEXEC) &&
!(mnt_flags & MNT_NOEXEC))
return false;
if ((fl & MNT_LOCK_ATIME) &&
((fl & MNT_ATIME_MASK) != (mnt_flags & MNT_ATIME_MASK)))
return false;
return true;
}
static int change_mount_ro_state(struct mount *mnt, unsigned int mnt_flags)
{
bool readonly_request = (mnt_flags & MNT_READONLY);
if (readonly_request == __mnt_is_readonly(&mnt->mnt))
return 0;
if (readonly_request)
error = mnt_make_readonly(real_mount(mnt));
else
__mnt_unmake_readonly(real_mount(mnt));
return error;
return mnt_make_readonly(mnt);
return __mnt_unmake_readonly(mnt);
}
/*
* Update the user-settable attributes on a mount. The caller must hold
* sb->s_umount for writing.
*/
static void set_mount_attributes(struct mount *mnt, unsigned int mnt_flags)
{
lock_mount_hash();
mnt_flags |= mnt->mnt.mnt_flags & ~MNT_USER_SETTABLE_MASK;
mnt->mnt.mnt_flags = mnt_flags;
touch_mnt_namespace(mnt->mnt_ns);
unlock_mount_hash();
}
/*
* Handle reconfiguration of the mountpoint only without alteration of the
* superblock it refers to. This is triggered by specifying MS_REMOUNT|MS_BIND
* to mount(2).
*/
static int do_reconfigure_mnt(struct path *path, unsigned int mnt_flags)
{
struct super_block *sb = path->mnt->mnt_sb;
struct mount *mnt = real_mount(path->mnt);
int ret;
if (!check_mnt(mnt))
return -EINVAL;
if (path->dentry != mnt->mnt.mnt_root)
return -EINVAL;
if (!can_change_locked_flags(mnt, mnt_flags))
return -EPERM;
down_write(&sb->s_umount);
ret = change_mount_ro_state(mnt, mnt_flags);
if (ret == 0)
set_mount_attributes(mnt, mnt_flags);
up_write(&sb->s_umount);
return ret;
}
/*
......@@ -2243,6 +2311,7 @@ static int do_remount(struct path *path, int ms_flags, int sb_flags,
int err;
struct super_block *sb = path->mnt->mnt_sb;
struct mount *mnt = real_mount(path->mnt);
void *sec_opts = NULL;
if (!check_mnt(mnt))
return -EINVAL;
......@@ -2250,50 +2319,25 @@ static int do_remount(struct path *path, int ms_flags, int sb_flags,
if (path->dentry != path->mnt->mnt_root)
return -EINVAL;
/* Don't allow changing of locked mnt flags.
*
* No locks need to be held here while testing the various
* MNT_LOCK flags because those flags can never be cleared
* once they are set.
*/
if ((mnt->mnt.mnt_flags & MNT_LOCK_READONLY) &&
!(mnt_flags & MNT_READONLY)) {
return -EPERM;
}
if ((mnt->mnt.mnt_flags & MNT_LOCK_NODEV) &&
!(mnt_flags & MNT_NODEV)) {
return -EPERM;
}
if ((mnt->mnt.mnt_flags & MNT_LOCK_NOSUID) &&
!(mnt_flags & MNT_NOSUID)) {
return -EPERM;
}
if ((mnt->mnt.mnt_flags & MNT_LOCK_NOEXEC) &&
!(mnt_flags & MNT_NOEXEC)) {
return -EPERM;
}
if ((mnt->mnt.mnt_flags & MNT_LOCK_ATIME) &&
((mnt->mnt.mnt_flags & MNT_ATIME_MASK) != (mnt_flags & MNT_ATIME_MASK))) {
if (!can_change_locked_flags(mnt, mnt_flags))
return -EPERM;
}
err = security_sb_remount(sb, data);
if (data && !(sb->s_type->fs_flags & FS_BINARY_MOUNTDATA)) {
err = security_sb_eat_lsm_opts(data, &sec_opts);
if (err)
return err;
}
err = security_sb_remount(sb, sec_opts);
security_free_mnt_opts(&sec_opts);
if (err)
return err;
down_write(&sb->s_umount);
if (ms_flags & MS_BIND)
err = change_mount_flags(path->mnt, ms_flags);
else if (!ns_capable(sb->s_user_ns, CAP_SYS_ADMIN))
err = -EPERM;
else
err = -EPERM;
if (ns_capable(sb->s_user_ns, CAP_SYS_ADMIN)) {
err = do_remount_sb(sb, sb_flags, data, 0);
if (!err) {
lock_mount_hash();
mnt_flags |= mnt->mnt.mnt_flags & ~MNT_USER_SETTABLE_MASK;
mnt->mnt.mnt_flags = mnt_flags;
touch_mnt_namespace(mnt->mnt_ns);
unlock_mount_hash();
if (!err)
set_mount_attributes(mnt, mnt_flags);
}
up_write(&sb->s_umount);
return err;
......@@ -2788,7 +2832,9 @@ long do_mount(const char *dev_name, const char __user *dir_name,
SB_LAZYTIME |
SB_I_VERSION);
if (flags & MS_REMOUNT)
if ((flags & (MS_REMOUNT | MS_BIND)) == (MS_REMOUNT | MS_BIND))
retval = do_reconfigure_mnt(&path, mnt_flags);
else if (flags & MS_REMOUNT)
retval = do_remount(&path, flags, sb_flags, mnt_flags,
data_page);
else if (flags & MS_BIND)
......
......@@ -123,7 +123,7 @@ struct nfs_parsed_mount_data {
unsigned short protocol;
} nfs_server;
struct security_mnt_opts lsm_opts;
void *lsm_opts;
struct net *net;
};
......
......@@ -929,7 +929,7 @@ static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(void)
data->minorversion = 0;
data->need_mount = true;
data->net = current->nsproxy->net_ns;
security_init_mnt_opts(&data->lsm_opts);
data->lsm_opts = NULL;
}
return data;
}
......@@ -1206,7 +1206,7 @@ static int nfs_get_option_ul_bound(substring_t args[], unsigned long *option,
static int nfs_parse_mount_options(char *raw,
struct nfs_parsed_mount_data *mnt)
{
char *p, *string, *secdata;
char *p, *string;
int rc, sloppy = 0, invalid_option = 0;
unsigned short protofamily = AF_UNSPEC;
unsigned short mountfamily = AF_UNSPEC;
......@@ -1217,20 +1217,10 @@ static int nfs_parse_mount_options(char *raw,
}
dfprintk(MOUNT, "NFS: nfs mount opts='%s'\n", raw);
secdata = alloc_secdata();
if (!secdata)
goto out_nomem;
rc = security_sb_copy_data(raw, secdata);
rc = security_sb_eat_lsm_opts(raw, &mnt->lsm_opts);
if (rc)
goto out_security_failure;
rc = security_sb_parse_opts_str(secdata, &mnt->lsm_opts);
if (rc)
goto out_security_failure;
free_secdata(secdata);
while ((p = strsep(&raw, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
unsigned long option;
......@@ -1682,7 +1672,6 @@ static int nfs_parse_mount_options(char *raw,
printk(KERN_INFO "NFS: not enough memory to parse option\n");
return 0;
out_security_failure:
free_secdata(secdata);
printk(KERN_INFO "NFS: security options invalid: %d\n", rc);
return 0;
}
......@@ -2081,14 +2070,9 @@ static int nfs23_validate_mount_data(void *options,
if (data->context[0]){
#ifdef CONFIG_SECURITY_SELINUX
int rc;
char *opts_str = kmalloc(sizeof(data->context) + 8, GFP_KERNEL);
if (!opts_str)
return -ENOMEM;
strcpy(opts_str, "context=");
data->context[NFS_MAX_CONTEXT_LEN] = '\0';
strcat(opts_str, &data->context[0]);
rc = security_sb_parse_opts_str(opts_str, &args->lsm_opts);
kfree(opts_str);
rc = security_add_mnt_opt("context", data->context,
strlen(data->context), &args->lsm_opts);
if (rc)
return rc;
#else
......@@ -2271,7 +2255,7 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
options->version <= 6))))
return 0;
data = kzalloc(sizeof(*data), GFP_KERNEL);
data = nfs_alloc_parsed_mount_data();
if (data == NULL)
return -ENOMEM;
......@@ -2310,8 +2294,10 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
/* compare new mount options with old ones */
error = nfs_compare_remount_data(nfss, data);
if (!error)
error = security_sb_remount(sb, data->lsm_opts);
out:
kfree(data);
nfs_free_parsed_mount_data(data);
return error;
}
EXPORT_SYMBOL_GPL(nfs_remount);
......@@ -2548,7 +2534,7 @@ int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot,
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
kflags |= SECURITY_LSM_NATIVE_LABELS;
error = security_sb_set_mnt_opts(s, &mount_info->parsed->lsm_opts,
error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts,
kflags, &kflags_out);
if (error)
goto err;
......
......@@ -10,6 +10,7 @@
#include <linux/mount.h>
#include <linux/fs.h>
#include <linux/nsproxy.h>
#include <uapi/linux/mount.h>
#include "internal.h"
#include "pnode.h"
......
......@@ -35,6 +35,7 @@
#include <linux/fsnotify.h>
#include <linux/lockdep.h>
#include <linux/user_namespace.h>
#include <uapi/linux/mount.h>
#include "internal.h"
static int thaw_super_locked(struct super_block *sb);
......@@ -1245,17 +1246,13 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
{
struct dentry *root;
struct super_block *sb;
char *secdata = NULL;
int error = -ENOMEM;
void *sec_opts = NULL;
if (data && !(type->fs_flags & FS_BINARY_MOUNTDATA)) {
secdata = alloc_secdata();
if (!secdata)
goto out;
error = security_sb_copy_data(data, secdata);
error = security_sb_eat_lsm_opts(data, &sec_opts);
if (error)
goto out_free_secdata;
return ERR_PTR(error);
}
root = type->mount(type, flags, name, data);
......@@ -1276,10 +1273,16 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
smp_wmb();
sb->s_flags |= SB_BORN;
error = security_sb_kern_mount(sb, flags, secdata);
error = security_sb_set_mnt_opts(sb, sec_opts, 0, NULL);
if (error)
goto out_sb;
if (!(flags & (MS_KERNMOUNT|MS_SUBMOUNT))) {
error = security_sb_kern_mount(sb);
if (error)
goto out_sb;
}
/*
* filesystems should never set s_maxbytes larger than MAX_LFS_FILESIZE
* but s_maxbytes was an unsigned long long for many releases. Throw
......@@ -1290,14 +1293,13 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
"negative value (%lld)\n", type->name, sb->s_maxbytes);
up_write(&sb->s_umount);
free_secdata(secdata);
security_free_mnt_opts(&sec_opts);
return root;
out_sb:
dput(root);
deactivate_locked_super(sb);
out_free_secdata:
free_secdata(secdata);
out:
security_free_mnt_opts(&sec_opts);
return ERR_PTR(error);
}
......
......@@ -1461,9 +1461,10 @@ union security_list_options {
int (*sb_alloc_security)(struct super_block *sb);
void (*sb_free_security)(struct super_block *sb);
int (*sb_copy_data)(char *orig, char *copy);
int (*sb_remount)(struct super_block *sb, void *data);
int (*sb_kern_mount)(struct super_block *sb, int flags, void *data);
void (*sb_free_mnt_opts)(void *mnt_opts);
int (*sb_eat_lsm_opts)(char *orig, void **mnt_opts);
int (*sb_remount)(struct super_block *sb, void *mnt_opts);
int (*sb_kern_mount)(struct super_block *sb);
int (*sb_show_options)(struct seq_file *m, struct super_block *sb);
int (*sb_statfs)(struct dentry *dentry);
int (*sb_mount)(const char *dev_name, const struct path *path,
......@@ -1471,14 +1472,15 @@ union security_list_options {
int (*sb_umount)(struct vfsmount *mnt, int flags);
int (*sb_pivotroot)(const struct path *old_path, const struct path *new_path);
int (*sb_set_mnt_opts)(struct super_block *sb,
struct security_mnt_opts *opts,
void *mnt_opts,
unsigned long kern_flags,
unsigned long *set_kern_flags);
int (*sb_clone_mnt_opts)(const struct super_block *oldsb,
struct super_block *newsb,
unsigned long kern_flags,
unsigned long *set_kern_flags);
int (*sb_parse_opts_str)(char *options, struct security_mnt_opts *opts);
int (*sb_add_mnt_opt)(const char *option, const char *val, int len,
void **mnt_opts);
int (*dentry_init_security)(struct dentry *dentry, int mode,
const struct qstr *name, void **ctx,
u32 *ctxlen);
......@@ -1800,7 +1802,8 @@ struct security_hook_heads {
struct hlist_head bprm_committed_creds;
struct hlist_head sb_alloc_security;
struct hlist_head sb_free_security;
struct hlist_head sb_copy_data;
struct hlist_head sb_free_mnt_opts;
struct hlist_head sb_eat_lsm_opts;
struct hlist_head sb_remount;
struct hlist_head sb_kern_mount;
struct hlist_head sb_show_options;
......@@ -1810,7 +1813,7 @@ struct security_hook_heads {
struct hlist_head sb_pivotroot;
struct hlist_head sb_set_mnt_opts;
struct hlist_head sb_clone_mnt_opts;
struct hlist_head sb_parse_opts_str;
struct hlist_head sb_add_mnt_opt;
struct hlist_head dentry_init_security;
struct hlist_head dentry_create_files_as;
#ifdef CONFIG_SECURITY_PATH
......
......@@ -81,7 +81,7 @@ extern void mnt_drop_write_file(struct file *file);
extern void mntput(struct vfsmount *mnt);
extern struct vfsmount *mntget(struct vfsmount *mnt);
extern struct vfsmount *mnt_clone_internal(const struct path *path);
extern int __mnt_is_readonly(struct vfsmount *mnt);
extern bool __mnt_is_readonly(struct vfsmount *mnt);
extern bool mnt_may_suid(struct vfsmount *mnt);
struct path;
......
......@@ -182,36 +182,10 @@ static inline const char *kernel_load_data_id_str(enum kernel_load_data_id id)
#ifdef CONFIG_SECURITY