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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

Browse Source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  [PATCH] get rid of __exit_files(), __exit_fs() and __put_fs_struct()
  [PATCH] proc_readfd_common() race fix
  [PATCH] double-free of inode on alloc_file() failure exit in create_write_pipe()
  [PATCH] teach seq_file to discard entries
  [PATCH] umount_tree() will unhash everything itself
  [PATCH] get rid of more nameidata passing in namespace.c
  [PATCH] switch a bunch of LSM hooks from nameidata to path
  [PATCH] lock exclusively in collect_mounts() and drop_collected_mounts()
  [PATCH] move a bunch of declarations to fs/internal.h
This commit is contained in:
Linus Torvalds 2008-04-22 18:27:56 -07:00
commit 94bc891b00
18 changed files with 118 additions and 120 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
fs/internal.h
View File

@ -43,3 +43,14 @@ extern void __init chrdev_init(void);
* namespace.c
*/
extern int copy_mount_options(const void __user *, unsigned long *);
extern void free_vfsmnt(struct vfsmount *);
extern struct vfsmount *alloc_vfsmnt(const char *);
extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
struct vfsmount *);
extern void release_mounts(struct list_head *);
extern void umount_tree(struct vfsmount *, int, struct list_head *);
extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
extern void __init mnt_init(void);

66
fs/namespace.c
View File

@ -1091,20 +1091,20 @@ Enomem:
struct vfsmount *collect_mounts(struct vfsmount *mnt, struct dentry *dentry)
{
struct vfsmount *tree;
down_read(&namespace_sem);
down_write(&namespace_sem);
tree = copy_tree(mnt, dentry, CL_COPY_ALL | CL_PRIVATE);
up_read(&namespace_sem);
up_write(&namespace_sem);
return tree;
}
void drop_collected_mounts(struct vfsmount *mnt)
{
LIST_HEAD(umount_list);
down_read(&namespace_sem);
down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
umount_tree(mnt, 0, &umount_list);
spin_unlock(&vfsmount_lock);
up_read(&namespace_sem);
up_write(&namespace_sem);
release_mounts(&umount_list);
}
@ -1205,32 +1205,32 @@ static int attach_recursive_mnt(struct vfsmount *source_mnt,
return 0;
}
static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
static int graft_tree(struct vfsmount *mnt, struct path *path)
{
int err;
if (mnt->mnt_sb->s_flags & MS_NOUSER)
return -EINVAL;
if (S_ISDIR(nd->path.dentry->d_inode->i_mode) !=
if (S_ISDIR(path->dentry->d_inode->i_mode) !=
S_ISDIR(mnt->mnt_root->d_inode->i_mode))
return -ENOTDIR;
err = -ENOENT;
mutex_lock(&nd->path.dentry->d_inode->i_mutex);
if (IS_DEADDIR(nd->path.dentry->d_inode))
mutex_lock(&path->dentry->d_inode->i_mutex);
if (IS_DEADDIR(path->dentry->d_inode))
goto out_unlock;
err = security_sb_check_sb(mnt, nd);
err = security_sb_check_sb(mnt, path);
if (err)
goto out_unlock;
err = -ENOENT;
if (IS_ROOT(nd->path.dentry) || !d_unhashed(nd->path.dentry))
err = attach_recursive_mnt(mnt, &nd->path, NULL);
if (IS_ROOT(path->dentry) || !d_unhashed(path->dentry))
err = attach_recursive_mnt(mnt, path, NULL);
out_unlock:
mutex_unlock(&nd->path.dentry->d_inode->i_mutex);
mutex_unlock(&path->dentry->d_inode->i_mutex);
if (!err)
security_sb_post_addmount(mnt, nd);
security_sb_post_addmount(mnt, path);
return err;
}
@ -1294,7 +1294,7 @@ static noinline int do_loopback(struct nameidata *nd, char *old_name,
if (!mnt)
goto out;
err = graft_tree(mnt, nd);
err = graft_tree(mnt, &nd->path);
if (err) {
LIST_HEAD(umount_list);
spin_lock(&vfsmount_lock);
@ -1501,7 +1501,7 @@ int do_add_mount(struct vfsmount *newmnt, struct nameidata *nd,
goto unlock;
newmnt->mnt_flags = mnt_flags;
if ((err = graft_tree(newmnt, nd)))
if ((err = graft_tree(newmnt, &nd->path)))
goto unlock;
if (fslist) /* add to the specified expiration list */
@ -1746,7 +1746,8 @@ long do_mount(char *dev_name, char *dir_name, char *type_page,
if (retval)
return retval;
retval = security_sb_mount(dev_name, &nd, type_page, flags, data_page);
retval = security_sb_mount(dev_name, &nd.path,
type_page, flags, data_page);
if (retval)
goto dput_out;
@ -1986,15 +1987,13 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
const char __user * put_old)
{
struct vfsmount *tmp;
struct nameidata new_nd, old_nd, user_nd;
struct path parent_path, root_parent;
struct nameidata new_nd, old_nd;
struct path parent_path, root_parent, root;
int error;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
lock_kernel();
error = __user_walk(new_root, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
&new_nd);
if (error)
@ -2007,14 +2006,14 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
if (error)
goto out1;
error = security_sb_pivotroot(&old_nd, &new_nd);
error = security_sb_pivotroot(&old_nd.path, &new_nd.path);
if (error) {
path_put(&old_nd.path);
goto out1;
}
read_lock(&current->fs->lock);
user_nd.path = current->fs->root;
root = current->fs->root;
path_get(&current->fs->root);
read_unlock(&current->fs->lock);
down_write(&namespace_sem);
@ -2022,9 +2021,9 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
error = -EINVAL;
if (IS_MNT_SHARED(old_nd.path.mnt) ||
IS_MNT_SHARED(new_nd.path.mnt->mnt_parent) ||
IS_MNT_SHARED(user_nd.path.mnt->mnt_parent))
IS_MNT_SHARED(root.mnt->mnt_parent))
goto out2;
if (!check_mnt(user_nd.path.mnt))
if (!check_mnt(root.mnt))
goto out2;
error = -ENOENT;
if (IS_DEADDIR(new_nd.path.dentry->d_inode))
@ -2034,13 +2033,13 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
if (d_unhashed(old_nd.path.dentry) && !IS_ROOT(old_nd.path.dentry))
goto out2;
error = -EBUSY;
if (new_nd.path.mnt == user_nd.path.mnt ||
old_nd.path.mnt == user_nd.path.mnt)
if (new_nd.path.mnt == root.mnt ||
old_nd.path.mnt == root.mnt)
goto out2; /* loop, on the same file system */
error = -EINVAL;
if (user_nd.path.mnt->mnt_root != user_nd.path.dentry)
if (root.mnt->mnt_root != root.dentry)
goto out2; /* not a mountpoint */
if (user_nd.path.mnt->mnt_parent == user_nd.path.mnt)
if (root.mnt->mnt_parent == root.mnt)
goto out2; /* not attached */
if (new_nd.path.mnt->mnt_root != new_nd.path.dentry)
goto out2; /* not a mountpoint */
@ -2062,27 +2061,26 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
} else if (!is_subdir(old_nd.path.dentry, new_nd.path.dentry))
goto out3;
detach_mnt(new_nd.path.mnt, &parent_path);
detach_mnt(user_nd.path.mnt, &root_parent);
detach_mnt(root.mnt, &root_parent);
/* mount old root on put_old */
attach_mnt(user_nd.path.mnt, &old_nd.path);
attach_mnt(root.mnt, &old_nd.path);
/* mount new_root on / */
attach_mnt(new_nd.path.mnt, &root_parent);
touch_mnt_namespace(current->nsproxy->mnt_ns);
spin_unlock(&vfsmount_lock);
chroot_fs_refs(&user_nd.path, &new_nd.path);
security_sb_post_pivotroot(&user_nd, &new_nd);
chroot_fs_refs(&root, &new_nd.path);
security_sb_post_pivotroot(&root, &new_nd.path);
error = 0;
path_put(&root_parent);
path_put(&parent_path);
out2:
mutex_unlock(&old_nd.path.dentry->d_inode->i_mutex);
up_write(&namespace_sem);
path_put(&user_nd.path);
path_put(&root);
path_put(&old_nd.path);
out1:
path_put(&new_nd.path);
out0:
unlock_kernel();
return error;
out3:
spin_unlock(&vfsmount_lock);

3
fs/pipe.c
View File

@ -988,7 +988,10 @@ struct file *create_write_pipe(void)
return f;
err_dentry:
free_pipe_info(inode);
dput(dentry);
return ERR_PTR(err);
err_inode:
free_pipe_info(inode);
iput(inode);

4
fs/pnode.c
View File

@ -9,6 +9,7 @@
#include <linux/mnt_namespace.h>
#include <linux/mount.h>
#include <linux/fs.h>
#include "internal.h"
#include "pnode.h"
/* return the next shared peer mount of @p */
@ -211,8 +212,7 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
out:
spin_lock(&vfsmount_lock);
while (!list_empty(&tmp_list)) {
child = list_entry(tmp_list.next, struct vfsmount, mnt_hash);
list_del_init(&child->mnt_hash);
child = list_first_entry(&tmp_list, struct vfsmount, mnt_hash);
umount_tree(child, 0, &umount_list);
}
spin_unlock(&vfsmount_lock);

1
fs/pnode.h
View File

@ -35,4 +35,5 @@ int propagate_mnt(struct vfsmount *, struct dentry *, struct vfsmount *,
struct list_head *);
int propagate_umount(struct list_head *);
int propagate_mount_busy(struct vfsmount *, int);
void mnt_release_group_id(struct vfsmount *);
#endif /* _LINUX_PNODE_H */

4
fs/proc/base.c
View File

@ -1626,7 +1626,6 @@ static int proc_readfd_common(struct file * filp, void * dirent,
unsigned int fd, ino;
int retval;
struct files_struct * files;
struct fdtable *fdt;
retval = -ENOENT;
if (!p)
@ -1649,9 +1648,8 @@ static int proc_readfd_common(struct file * filp, void * dirent,
if (!files)
goto out;
rcu_read_lock();
fdt = files_fdtable(files);
for (fd = filp->f_pos-2;
fd < fdt->max_fds;
fd < files_fdtable(files)->max_fds;
fd++, filp->f_pos++) {
char name[PROC_NUMBUF];
int len;

16
fs/seq_file.c
View File

@ -25,6 +25,7 @@
* into the buffer. In case of error ->start() and ->next() return
* ERR_PTR(error). In the end of sequence they return %NULL. ->show()
* returns 0 in case of success and negative number in case of error.
* Returning SEQ_SKIP means "discard this element and move on".
*/
int seq_open(struct file *file, const struct seq_operations *op)
{
@ -114,8 +115,10 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
if (!p || IS_ERR(p))
break;
err = m->op->show(m, p);
if (err)
if (err < 0)
break;
if (unlikely(err))
m->count = 0;
if (m->count < m->size)
goto Fill;
m->op->stop(m, p);
@ -140,9 +143,10 @@ Fill:
break;
}
err = m->op->show(m, p);
if (err || m->count == m->size) {
if (m->count == m->size || err) {
m->count = offs;
break;
if (likely(err <= 0))
break;
}
pos = next;
}
@ -199,8 +203,12 @@ static int traverse(struct seq_file *m, loff_t offset)
if (IS_ERR(p))
break;
error = m->op->show(m, p);
if (error)
if (error < 0)
break;
if (unlikely(error)) {
error = 0;
m->count = 0;
}
if (m->count == m->size)
goto Eoverflow;
if (pos + m->count > offset) {

1
fs/super.c
View File

@ -39,6 +39,7 @@
#include <linux/mutex.h>
#include <linux/file.h>
#include <asm/uaccess.h>
#include "internal.h"
LIST_HEAD(super_blocks);

1
include/linux/dcache.h
View File

@ -359,7 +359,6 @@ static inline int d_mountpoint(struct dentry *dentry)
}
extern struct vfsmount *lookup_mnt(struct vfsmount *, struct dentry *);
extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
extern struct dentry *lookup_create(struct nameidata *nd, int is_dir);
extern int sysctl_vfs_cache_pressure;

6
include/linux/fs.h
View File

@ -305,7 +305,6 @@ struct vfsmount;
extern void __init inode_init(void);
extern void __init inode_init_early(void);
extern void __init mnt_init(void);
extern void __init files_init(unsigned long);
struct buffer_head;
@ -1536,12 +1535,7 @@ extern struct vfsmount *kern_mount_data(struct file_system_type *, void *data);
#define kern_mount(type) kern_mount_data(type, NULL)
extern int may_umount_tree(struct vfsmount *);
extern int may_umount(struct vfsmount *);
extern void umount_tree(struct vfsmount *, int, struct list_head *);
extern void release_mounts(struct list_head *);
extern long do_mount(char *, char *, char *, unsigned long, void *);
extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
struct vfsmount *);
extern struct vfsmount *collect_mounts(struct vfsmount *, struct dentry *);
extern void drop_collected_mounts(struct vfsmount *);

2
include/linux/mount.h
View File

@ -94,8 +94,6 @@ static inline void mntput(struct vfsmount *mnt)
}
}
extern void free_vfsmnt(struct vfsmount *mnt);
extern struct vfsmount *alloc_vfsmnt(const char *name);
extern struct vfsmount *do_kern_mount(const char *fstype, int flags,
const char *name, void *data);

52
include/linux/security.h
View File

@ -230,7 +230,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* loopback/bind mount (@flags & MS_BIND), @dev_name identifies the
* pathname of the object being mounted.
* @dev_name contains the name for object being mounted.
* @nd contains the nameidata structure for mount point object.
* @path contains the path for mount point object.
* @type contains the filesystem type.
* @flags contains the mount flags.
* @data contains the filesystem-specific data.
@ -249,7 +249,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* Check permission before the device with superblock @mnt->sb is mounted
* on the mount point named by @nd.
* @mnt contains the vfsmount for device being mounted.
* @nd contains the nameidata object for the mount point.
* @path contains the path for the mount point.
* Return 0 if permission is granted.
* @sb_umount:
* Check permission before the @mnt file system is unmounted.
@ -278,16 +278,16 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
* This hook is called any time a mount is successfully grafetd to
* the tree.
* @mnt contains the mounted filesystem.
* @mountpoint_nd contains the nameidata structure for the mount point.
* @mountpoint contains the path for the mount point.
* @sb_pivotroot:
* Check permission before pivoting the root filesystem.
* @old_nd contains the nameidata structure for the new location of the current root (put_old).
* @new_nd contains the nameidata structure for the new root (new_root).
* @old_path contains the path for the new location of the current root (put_old).
* @new_path contains the path for the new root (new_root).
* Return 0 if permission is granted.
* @sb_post_pivotroot:
* Update module state after a successful pivot.
* @old_nd contains the nameidata structure for the old root.
* @new_nd contains the nameidata structure for the new root.
* @old_path contains the path for the old root.
* @new_path contains the path for the new root.
* @sb_get_mnt_opts:
* Get the security relevant mount options used for a superblock
* @sb the superblock to get security mount options from
@ -1315,20 +1315,20 @@ struct security_operations {
int (*sb_copy_data)(char *orig, char *copy);
int (*sb_kern_mount) (struct super_block *sb, void *data);
int (*sb_statfs) (struct dentry *dentry);
int (*sb_mount) (char *dev_name, struct nameidata * nd,
int (*sb_mount) (char *dev_name, struct path *path,
char *type, unsigned long flags, void *data);
int (*sb_check_sb) (struct vfsmount * mnt, struct nameidata * nd);
int (*sb_check_sb) (struct vfsmount * mnt, struct path *path);
int (*sb_umount) (struct vfsmount * mnt, int flags);
void (*sb_umount_close) (struct vfsmount * mnt);
void (*sb_umount_busy) (struct vfsmount * mnt);
void (*sb_post_remount) (struct vfsmount * mnt,
unsigned long flags, void *data);
void (*sb_post_addmount) (struct vfsmount * mnt,
struct nameidata * mountpoint_nd);
int (*sb_pivotroot) (struct nameidata * old_nd,
struct nameidata * new_nd);
void (*sb_post_pivotroot) (struct nameidata * old_nd,
struct nameidata * new_nd);
struct path *mountpoint);
int (*sb_pivotroot) (struct path *old_path,
struct path *new_path);
void (*sb_post_pivotroot) (struct path *old_path,
struct path *new_path);
int (*sb_get_mnt_opts) (const struct super_block *sb,
struct security_mnt_opts *opts);
int (*sb_set_mnt_opts) (struct super_block *sb,
@ -1593,16 +1593,16 @@ void security_sb_free(struct super_block *sb);
int security_sb_copy_data(char *orig, char *copy);
int security_sb_kern_mount(struct super_block *sb, void *data);
int security_sb_statfs(struct dentry *dentry);
int security_sb_mount(char *dev_name, struct nameidata *nd,
int security_sb_mount(char *dev_name, struct path *path,
char *type, unsigned long flags, void *data);
int security_sb_check_sb(struct vfsmount *mnt, struct nameidata *nd);
int security_sb_check_sb(struct vfsmount *mnt, struct path *path);
int security_sb_umount(struct vfsmount *mnt, int flags);
void security_sb_umount_close(struct vfsmount *mnt);
void security_sb_umount_busy(struct vfsmount *mnt);
void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data);
void security_sb_post_addmount(struct vfsmount *mnt, struct nameidata *mountpoint_nd);
int security_sb_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd);
void security_sb_post_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd);
void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint);
int security_sb_pivotroot(struct path *old_path, struct path *new_path);
void security_sb_post_pivotroot(struct path *old_path, struct path *new_path);
int security_sb_get_mnt_opts(const struct super_block *sb,
struct security_mnt_opts *opts);
int security_sb_set_mnt_opts(struct super_block *sb, struct security_mnt_opts *opts);
@ -1872,7 +1872,7 @@ static inline int security_sb_statfs (struct dentry *dentry)
return 0;
}
static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
static inline int security_sb_mount (char *dev_name, struct path *path,
char *type, unsigned long flags,
void *data)
{
@ -1880,7 +1880,7 @@ static inline int security_sb_mount (char *dev_name, struct nameidata *nd,
}
static inline int security_sb_check_sb (struct vfsmount *mnt,
struct nameidata *nd)
struct path *path)
{
return 0;
}
@ -1901,17 +1901,17 @@ static inline void security_sb_post_remount (struct vfsmount *mnt,
{ }
static inline void security_sb_post_addmount (struct vfsmount *mnt,
struct nameidata *mountpoint_nd)
struct path *mountpoint)
{ }
static inline int security_sb_pivotroot (struct nameidata *old_nd,
struct nameidata *new_nd)
static inline int security_sb_pivotroot (struct path *old_path,
struct path *new_path)
{
return 0;
}
static inline void security_sb_post_pivotroot (struct nameidata *old_nd,
struct nameidata *new_nd)
static inline void security_sb_post_pivotroot (struct path *old_path,
struct path *new_path)
{ }
static inline int security_sb_get_mnt_opts(const struct super_block *sb,
struct security_mnt_opts *opts)

2
include/linux/seq_file.h
View File

@ -30,6 +30,8 @@ struct seq_operations {
int (*show) (struct seq_file *m, void *v);
};
#define SEQ_SKIP 1
int seq_open(struct file *, const struct seq_operations *);
ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
loff_t seq_lseek(struct file *, loff_t, int);

27
kernel/exit.c
View File

@ -521,7 +521,7 @@ void reset_files_struct(struct task_struct *tsk, struct files_struct *files)
}
EXPORT_SYMBOL(reset_files_struct);
static void __exit_files(struct task_struct *tsk)
void exit_files(struct task_struct *tsk)
{
struct files_struct * files = tsk->files;
@ -533,12 +533,7 @@ static void __exit_files(struct task_struct *tsk)
}
}
void exit_files(struct task_struct *tsk)
{
__exit_files(tsk);
}
static void __put_fs_struct(struct fs_struct *fs)
void put_fs_struct(struct fs_struct *fs)
{
/* No need to hold fs->lock if we are killing it */
if (atomic_dec_and_test(&fs->count)) {
@ -550,12 +545,7 @@ static void __put_fs_struct(struct fs_struct *fs)
}
}
void put_fs_struct(struct fs_struct *fs)
{
__put_fs_struct(fs);
}
static void __exit_fs(struct task_struct *tsk)
void exit_fs(struct task_struct *tsk)
{
struct fs_struct * fs = tsk->fs;
@ -563,15 +553,10 @@ static void __exit_fs(struct task_struct *tsk)
task_lock(tsk);
tsk->fs = NULL;
task_unlock(tsk);
__put_fs_struct(fs);
put_fs_struct(fs);
}
}
void exit_fs(struct task_struct *tsk)
{
__exit_fs(tsk);
}
EXPORT_SYMBOL_GPL(exit_fs);
/*
@ -967,8 +952,8 @@ NORET_TYPE void do_exit(long code)
if (group_dead)
acct_process();
exit_sem(tsk);
__exit_files(tsk);
__exit_fs(tsk);
exit_files(tsk);
exit_fs(tsk);
check_stack_usage();
exit_thread();
cgroup_exit(tsk, 1);

10
security/dummy.c
View File

@ -196,13 +196,13 @@ static int dummy_sb_statfs (struct dentry *dentry)
return 0;
}
static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type,
static int dummy_sb_mount (char *dev_name, struct path *path, char *type,
unsigned long flags, void *data)
{
return 0;
}
static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd)
static int dummy_sb_check_sb (struct vfsmount *mnt, struct path *path)
{
return 0;
}
@ -229,17 +229,17 @@ static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
}
static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
static void dummy_sb_post_addmount (struct vfsmount *mnt, struct path *path)
{
return;
}
static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
static int dummy_sb_pivotroot (struct path *old_path, struct path *new_path)
{
return 0;
}
static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
static void dummy_sb_post_pivotroot (struct path *old_path, struct path *new_path)
{
return;
}

20
security/security.c
View File

@ -296,15 +296,15 @@ int security_sb_statfs(struct dentry *dentry)
return security_ops->sb_statfs(dentry);
}
int security_sb_mount(char *dev_name, struct nameidata *nd,
int security_sb_mount(char *dev_name, struct path *path,
char *type, unsigned long flags, void *data)
{
return security_ops->sb_mount(dev_name, nd, type, flags, data);
return security_ops->sb_mount(dev_name, path, type, flags, data);
}
int security_sb_check_sb(struct vfsmount *mnt, struct nameidata *nd)
int security_sb_check_sb(struct vfsmount *mnt, struct path *path)
{
return security_ops->sb_check_sb(mnt, nd);
return security_ops->sb_check_sb(mnt, path);
}
int security_sb_umount(struct vfsmount *mnt, int flags)
@ -327,19 +327,19 @@ void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *d
security_ops->sb_post_remount(mnt, flags, data);
}
void security_sb_post_addmount(struct vfsmount *mnt, struct nameidata *mountpoint_nd)
void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint)
{
security_ops->sb_post_addmount(mnt, mountpoint_nd);
security_ops->sb_post_addmount(mnt, mountpoint);
}
int security_sb_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd)
int security_sb_pivotroot(struct path *old_path, struct path *new_path)
{
return security_ops->sb_pivotroot(old_nd, new_nd);
return security_ops->sb_pivotroot(old_path, new_path);
}
void security_sb_post_pivotroot(struct nameidata *old_nd, struct nameidata *new_nd)
void security_sb_post_pivotroot(struct path *old_path, struct path *new_path)
{
security_ops->sb_post_pivotroot(old_nd, new_nd);
security_ops->sb_post_pivotroot(old_path, new_path);
}
int security_sb_get_mnt_opts(const struct super_block *sb,

8
security/selinux/hooks.c
View File

@ -2401,22 +2401,22 @@ static int selinux_sb_statfs(struct dentry *dentry)
}
static int selinux_mount(char *dev_name,
struct nameidata *nd,
struct path *path,
char *type,
unsigned long flags,
void *data)
{
int rc;
rc = secondary_ops->sb_mount(dev_name, nd, type, flags, data);
rc = secondary_ops->sb_mount(dev_name, path, type, flags, data);
if (rc)
return rc;
if (flags & MS_REMOUNT)
return superblock_has_perm(current, nd->path.mnt->mnt_sb,
return superblock_has_perm(current, path->mnt->mnt_sb,
FILESYSTEM__REMOUNT, NULL);
else
return dentry_has_perm(current, nd->path.mnt, nd->path.dentry,
return dentry_has_perm(current, path->mnt, path->dentry,
FILE__MOUNTON);
}

4
security/smack/smack_lsm.c
View File

@ -315,10 +315,10 @@ static int smack_sb_statfs(struct dentry *dentry)
* Returns 0 if current can write the floor of the filesystem
* being mounted on, an error code otherwise.
*/
static int smack_sb_mount(char *dev_name, struct nameidata *nd,
static int smack_sb_mount(char *dev_name, struct path *path,
char *type, unsigned long flags, void *data)
{
struct superblock_smack *sbp = nd->path.mnt->mnt_sb->s_security;
struct superblock_smack *sbp = path->mnt->mnt_sb->s_security;
return smk_curacc(sbp->smk_floor, MAY_WRITE);
}