7 files changed, 23 insertions, 76 deletions

diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 274ac865bae8..049d6c36da09 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -496,7 +496,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
         }
         d_move(old_dentry, dentry);
         fsnotify_move(old_dir->d_inode, new_dir->d_inode, old_name,
-                old_dentry->d_name.name, S_ISDIR(old_dentry->d_inode->i_mode),
+                S_ISDIR(old_dentry->d_inode->i_mode),
                 NULL, old_dentry);
         fsnotify_oldname_free(old_name);
         unlock_rename(new_dir, old_dir);
diff --git a/fs/namei.c b/fs/namei.c
index 54d33df06be0..0741c69b3319 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1334,7 +1334,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
                 return -ENOENT;
 
         BUG_ON(victim->d_parent->d_inode != dir);
-        audit_inode_child(victim->d_name.name, victim, dir);
+        audit_inode_child(victim, dir);
 
         error = inode_permission(dir, MAY_WRITE | MAY_EXEC);
         if (error)
@@ -2663,11 +2663,9 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                 error = vfs_rename_dir(old_dir,old_dentry,new_dir,new_dentry);
         else
                 error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry);
-        if (!error) {
-                const char *new_name = old_dentry->d_name.name;
-                fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir,
+        if (!error)
+                fsnotify_move(old_dir, new_dir, old_name, is_dir,
                               new_dentry->d_inode, old_dentry);
-        }
         fsnotify_oldname_free(old_name);
 
         return error;
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index a94e8bd8eb1f..472cdf29ef82 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -29,14 +29,12 @@
 #include <linux/init.h> /* module_init */
 #include <linux/inotify.h>
 #include <linux/kernel.h> /* roundup() */
-#include <linux/magic.h> /* superblock magic number */
-#include <linux/mount.h> /* mntget */
 #include <linux/namei.h> /* LOOKUP_FOLLOW */
-#include <linux/path.h> /* struct path */
 #include <linux/sched.h> /* struct user */
 #include <linux/slab.h> /* struct kmem_cache */
 #include <linux/syscalls.h>
 #include <linux/types.h>
+#include <linux/anon_inodes.h>
 #include <linux/uaccess.h>
 #include <linux/poll.h>
 #include <linux/wait.h>
@@ -45,8 +43,6 @@
 
 #include <asm/ioctls.h>
 
-static struct vfsmount *inotify_mnt __read_mostly;
-
 /* these are configurable via /proc/sys/fs/inotify/ */
 static int inotify_max_user_instances __read_mostly;
 static int inotify_max_queued_events __read_mostly;
@@ -645,9 +641,7 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
 {
         struct fsnotify_group *group;
         struct user_struct *user;
-        struct file *filp;
-        struct path path;
-        int fd, ret;
+        int ret;
 
         /* Check the IN_* constants for consistency.  */
         BUILD_BUG_ON(IN_CLOEXEC != O_CLOEXEC);
@@ -656,10 +650,6 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
         if (flags & ~(IN_CLOEXEC | IN_NONBLOCK))
                 return -EINVAL;
 
-        fd = get_unused_fd_flags(flags & O_CLOEXEC);
-        if (fd < 0)
-                return fd;
-
         user = get_current_user();
         if (unlikely(atomic_read(&user->inotify_devs) >=
                         inotify_max_user_instances)) {
@@ -676,27 +666,14 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
 
         atomic_inc(&user->inotify_devs);
 
-        path.mnt = inotify_mnt;
-        path.dentry = inotify_mnt->mnt_root;
-        path_get(&path);
-        filp = alloc_file(&path, FMODE_READ, &inotify_fops);
-        if (!filp)
-                goto Enfile;
+        ret = anon_inode_getfd("inotify", &inotify_fops, group,
+                                  O_RDONLY | flags);
+        if (ret >= 0)
+                return ret;
 
-        filp->f_flags = O_RDONLY | (flags & O_NONBLOCK);
-        filp->private_data = group;
-
-        fd_install(fd, filp);
-
-        return fd;
-
-Enfile:
-        ret = -ENFILE;
-        path_put(&path);
         atomic_dec(&user->inotify_devs);
 out_free_uid:
         free_uid(user);
-        put_unused_fd(fd);
         return ret;
 }
 
@@ -783,20 +760,6 @@ out:
         return ret;
 }
 
-static int
-inotify_get_sb(struct file_system_type *fs_type, int flags,
-               const char *dev_name, void *data, struct vfsmount *mnt)
-{
-        return get_sb_pseudo(fs_type, "inotify", NULL,
-                        INOTIFYFS_SUPER_MAGIC, mnt);
-}
-
-static struct file_system_type inotify_fs_type = {
-    .name       = "inotifyfs",
-    .get_sb     = inotify_get_sb,
-    .kill_sb    = kill_anon_super,
-};
-
 /*
  * inotify_user_setup - Our initialization function.  Note that we cannnot return
  * error because we have compiled-in VFS hooks.  So an (unlikely) failure here
@@ -804,16 +767,6 @@ static struct file_system_type inotify_fs_type = {
  */
 static int __init inotify_user_setup(void)
 {
-        int ret;
-
-        ret = register_filesystem(&inotify_fs_type);
-        if (unlikely(ret))
-                panic("inotify: register_filesystem returned %d!\n", ret);
-
-        inotify_mnt = kern_mount(&inotify_fs_type);
-        if (IS_ERR(inotify_mnt))
-                panic("inotify: kern_mount ret %ld!\n", PTR_ERR(inotify_mnt));
-
         inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark_entry, SLAB_PANIC);
         event_priv_cachep = KMEM_CACHE(inotify_event_private_data, SLAB_PANIC);
 
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 3c7a358241a7..f391d45c8aea 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -424,7 +424,7 @@ extern void audit_syscall_exit(int failed, long return_code);
 extern void __audit_getname(const char *name);
 extern void audit_putname(const char *name);
 extern void __audit_inode(const char *name, const struct dentry *dentry);
-extern void __audit_inode_child(const char *dname, const struct dentry *dentry,
+extern void __audit_inode_child(const struct dentry *dentry,
                                 const struct inode *parent);
 extern void __audit_ptrace(struct task_struct *t);
 
@@ -442,11 +442,10 @@ static inline void audit_inode(const char *name, const struct dentry *dentry) {
         if (unlikely(!audit_dummy_context()))
                 __audit_inode(name, dentry);
 }
-static inline void audit_inode_child(const char *dname, 
-                                     const struct dentry *dentry,
+static inline void audit_inode_child(const struct dentry *dentry,
                                      const struct inode *parent) {
         if (unlikely(!audit_dummy_context()))
-                __audit_inode_child(dname, dentry, parent);
+                __audit_inode_child(dentry, parent);
 }
 void audit_core_dumps(long signr);
 
@@ -544,9 +543,9 @@ extern int audit_signals;
 #define audit_getname(n) do { ; } while (0)
 #define audit_putname(n) do { ; } while (0)
 #define __audit_inode(n,d) do { ; } while (0)
-#define __audit_inode_child(d,i,p) do { ; } while (0)
+#define __audit_inode_child(i,p) do { ; } while (0)
 #define audit_inode(n,d) do { ; } while (0)
-#define audit_inode_child(d,i,p) do { ; } while (0)
+#define audit_inode_child(i,p) do { ; } while (0)
 #define audit_core_dumps(i) do { ; } while (0)
 #define auditsc_get_stamp(c,t,s) (0)
 #define audit_get_loginuid(t) (-1)
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 936f9aa8bb97..df8fd9a3b214 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -65,7 +65,7 @@ static inline void fsnotify_link_count(struct inode *inode)
  * fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
  */
 static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
-                                 const char *old_name, const char *new_name,
+                                 const char *old_name,
                                  int isdir, struct inode *target, struct dentry *moved)
 {
         struct inode *source = moved->d_inode;
@@ -73,6 +73,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
         u32 fs_cookie = fsnotify_get_cookie();
         __u32 old_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_FROM);
         __u32 new_dir_mask = (FS_EVENT_ON_CHILD | FS_MOVED_TO);
+        const char *new_name = moved->d_name.name;
 
         if (old_dir == new_dir)
                 old_dir_mask |= FS_DN_RENAME;
@@ -103,7 +104,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
                 inotify_inode_queue_event(source, IN_MOVE_SELF, 0, NULL, NULL);
                 fsnotify(source, FS_MOVE_SELF, moved->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
         }
-        audit_inode_child(new_name, moved, new_dir);
+        audit_inode_child(moved, new_dir);
 }
 
 /*
@@ -146,7 +147,7 @@ static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
 {
         inotify_inode_queue_event(inode, IN_CREATE, 0, dentry->d_name.name,
                                   dentry->d_inode);
-        audit_inode_child(dentry->d_name.name, dentry, inode);
+        audit_inode_child(dentry, inode);
 
         fsnotify(inode, FS_CREATE, dentry->d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
 }
@@ -161,7 +162,7 @@ static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct
         inotify_inode_queue_event(dir, IN_CREATE, 0, new_dentry->d_name.name,
                                   inode);
         fsnotify_link_count(inode);
-        audit_inode_child(new_dentry->d_name.name, new_dentry, dir);
+        audit_inode_child(new_dentry, dir);
 
         fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, new_dentry->d_name.name, 0);
 }
@@ -175,7 +176,7 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
         struct inode *d_inode = dentry->d_inode;
 
         inotify_inode_queue_event(inode, mask, 0, dentry->d_name.name, d_inode);
-        audit_inode_child(dentry->d_name.name, dentry, inode);
+        audit_inode_child(dentry, inode);
 
         fsnotify(inode, mask, d_inode, FSNOTIFY_EVENT_INODE, dentry->d_name.name, 0);
 }
diff --git a/include/linux/magic.h b/include/linux/magic.h
index 76285e01b39e..eb9800f05782 100644
--- a/include/linux/magic.h
+++ b/include/linux/magic.h
@@ -52,7 +52,6 @@
 #define CGROUP_SUPER_MAGIC      0x27e0eb
 
 #define FUTEXFS_SUPER_MAGIC     0xBAD1DEA
-#define INOTIFYFS_SUPER_MAGIC   0x2BAD1DEA
 
 #define STACK_END_MAGIC         0x57AC6E9D
 
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index fc0f928167e7..f3a461c0970a 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1988,7 +1988,6 @@ void __audit_inode(const char *name, const struct dentry *dentry)
 
 /**
  * audit_inode_child - collect inode info for created/removed objects
- * @dname: inode's dentry name
  * @dentry: dentry being audited
  * @parent: inode of dentry parent
  *
@@ -2000,13 +1999,14 @@ void __audit_inode(const char *name, const struct dentry *dentry)
  * must be hooked prior, in order to capture the target inode during
  * unsuccessful attempts.
  */
-void __audit_inode_child(const char *dname, const struct dentry *dentry,
+void __audit_inode_child(const struct dentry *dentry,
                          const struct inode *parent)
 {
         int idx;
         struct audit_context *context = current->audit_context;
         const char *found_parent = NULL, *found_child = NULL;
         const struct inode *inode = dentry->d_inode;
+        const char *dname = dentry->d_name.name;
         int dirlen = 0;
 
         if (!context->in_syscall)
@@ -2014,9 +2014,6 @@ void __audit_inode_child(const char *dname, const struct dentry *dentry,
 
         if (inode)
                 handle_one(inode);
-        /* determine matching parent */
-        if (!dname)
-                goto add_names;
 
         /* parent is more likely, look for it first */
         for (idx = 0; idx < context->name_count; idx++) {