[PATCH] switch a bunch of LSM hooks from nameidata to path

Namely, ones from namespace.c

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

6 files changed, 53 insertions, 52 deletions

diff --git a/fs/namespace.c b/fs/namespace.c
index af2fb3707d0a..87d2d82010bb 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1220,7 +1220,7 @@ static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
         if (IS_DEADDIR(nd->path.dentry->d_inode))
                 goto out_unlock;
 
-        err = security_sb_check_sb(mnt, nd);
+        err = security_sb_check_sb(mnt, &nd->path);
         if (err)
                 goto out_unlock;
 
@@ -1230,7 +1230,7 @@ static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
 out_unlock:
         mutex_unlock(&nd->path.dentry->d_inode->i_mutex);
         if (!err)
-                security_sb_post_addmount(mnt, nd);
+                security_sb_post_addmount(mnt, &nd->path);
         return err;
 }
 
@@ -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;
 
@@ -2007,7 +2008,7 @@ 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;
@@ -2070,7 +2071,7 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
         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);
+        security_sb_post_pivotroot(&user_nd.path, &new_nd.path);
         error = 0;
         path_put(&root_parent);
         path_put(&parent_path);
diff --git a/include/linux/security.h b/include/linux/security.h
index fea1f4aa4dd5..53a34539382a 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -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)
diff --git a/security/dummy.c b/security/dummy.c
index 98d5f969cdc8..b0232bbf427b 100644
--- a/security/dummy.c
+++ b/security/dummy.c
@@ -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;
 }
diff --git a/security/security.c b/security/security.c
index 2e250c7028eb..8a285c7b9962 100644
--- a/security/security.c
+++ b/security/security.c
@@ -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,
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 1bf2543ea942..38fbb168dbed 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2392,22 +2392,22 @@ 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);
 }
 
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 93f5b0ce662a..4215971434e6 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -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);
 }