Merge tag 'pull-path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs constification updates from Al Viro:
 "whack-a-mole: constifying struct path *"

* tag 'pull-path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ecryptfs: constify path
  spufs: constify path
  nd_jump_link(): constify path
  audit_init_parent(): constify path
  __io_setxattr(): constify path
  do_proc_readlink(): constify path
  overlayfs: constify path
  fs/notify: constify path
  may_linkat(): constify path
  do_sys_name_to_handle(): constify path
  ->getprocattr(): attribute name is const char *, TYVM...

Author: torvalds

arch/powerpc/platforms/cell/spufs/inode.c

@@ -275,7 +275,7 @@ spufs_mkdir(struct inode *dir, struct dentry *dentry, unsigned int flags,
 	return ret;
 }
 
-static int spufs_context_open(struct path *path)
+static int spufs_context_open(const struct path *path)
 {
 	int ret;
 	struct file *filp;
@@ -491,7 +491,7 @@ spufs_mkgang(struct inode *dir, struct dentry *dentry, umode_t mode)
 	return ret;
 }
 
-static int spufs_gang_open(struct path *path)
+static int spufs_gang_open(const struct path *path)
 {
 	int ret;
 	struct file *filp;
@@ -536,7 +536,7 @@ static int spufs_create_gang(struct inode *inode,
 
 static struct file_system_type spufs_type;
 
-long spufs_create(struct path *path, struct dentry *dentry,
+long spufs_create(const struct path *path, struct dentry *dentry,
 		unsigned int flags, umode_t mode, struct file *filp)
 {
 	struct inode *dir = d_inode(path->dentry);

arch/powerpc/platforms/cell/spufs/spufs.h

@@ -232,7 +232,7 @@ extern const struct spufs_tree_descr spufs_dir_debug_contents[];
 extern struct spufs_calls spufs_calls;
 struct coredump_params;
 long spufs_run_spu(struct spu_context *ctx, u32 *npc, u32 *status);
-long spufs_create(struct path *nd, struct dentry *dentry, unsigned int flags,
+long spufs_create(const struct path *nd, struct dentry *dentry, unsigned int flags,
 			umode_t mode, struct file *filp);
 /* ELF coredump callbacks for writing SPU ELF notes */
 extern int spufs_coredump_extra_notes_size(void);

fs/ecryptfs/ecryptfs_kernel.h

@@ -506,7 +506,7 @@ ecryptfs_dentry_to_lower(struct dentry *dentry)
 	return ((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path.dentry;
 }
 
-static inline struct path *
+static inline const struct path *
 ecryptfs_dentry_to_lower_path(struct dentry *dentry)
 {
 	return &((struct ecryptfs_dentry_info *)dentry->d_fsdata)->lower_path;

fs/ecryptfs/file.c

@@ -33,7 +33,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
 				struct iov_iter *to)
 {
 	ssize_t rc;
-	struct path *path;
+	const struct path *path;
 	struct file *file = iocb->ki_filp;
 
 	rc = generic_file_read_iter(iocb, to);

fs/ecryptfs/inode.c

@@ -317,7 +317,7 @@ static int ecryptfs_i_size_read(struct dentry *dentry, struct inode *inode)
 static struct dentry *ecryptfs_lookup_interpose(struct dentry *dentry,
 				     struct dentry *lower_dentry)
 {
-	struct path *path = ecryptfs_dentry_to_lower_path(dentry->d_parent);
+	const struct path *path = ecryptfs_dentry_to_lower_path(dentry->d_parent);
 	struct inode *inode, *lower_inode;
 	struct ecryptfs_dentry_info *dentry_info;
 	int rc = 0;

fs/ecryptfs/main.c

@@ -105,7 +105,7 @@ static int ecryptfs_init_lower_file(struct dentry *dentry,
 				    struct file **lower_file)
 {
 	const struct cred *cred = current_cred();
-	struct path *path = ecryptfs_dentry_to_lower_path(dentry);
+	const struct path *path = ecryptfs_dentry_to_lower_path(dentry);
 	int rc;
 
 	rc = ecryptfs_privileged_open(lower_file, path->dentry, path->mnt,

fs/fhandle.c

@@ -14,7 +14,7 @@
 #include "internal.h"
 #include "mount.h"
 
-static long do_sys_name_to_handle(struct path *path,
+static long do_sys_name_to_handle(const struct path *path,
 				  struct file_handle __user *ufh,
 				  int __user *mnt_id)
 {

fs/internal.h

@@ -63,7 +63,7 @@ extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
 			   const char *, unsigned int, struct path *);
 int do_rmdir(int dfd, struct filename *name);
 int do_unlinkat(int dfd, struct filename *name);
-int may_linkat(struct user_namespace *mnt_userns, struct path *link);
+int may_linkat(struct user_namespace *mnt_userns, const struct path *link);
 int do_renameat2(int olddfd, struct filename *oldname, int newdfd,
 		 struct filename *newname, unsigned int flags);
 int do_mkdirat(int dfd, struct filename *name, umode_t mode);

fs/namei.c

@@ -986,7 +986,7 @@ static int nd_jump_root(struct nameidata *nd)
  * Helper to directly jump to a known parsed path from ->get_link,
  * caller must have taken a reference to path beforehand.
  */
-int nd_jump_link(struct path *path)
+int nd_jump_link(const struct path *path)
 {
 	int error = -ELOOP;
 	struct nameidata *nd = current->nameidata;
@@ -1178,7 +1178,7 @@ static bool safe_hardlink_source(struct user_namespace *mnt_userns,
  *
  * Returns 0 if successful, -ve on error.
  */
-int may_linkat(struct user_namespace *mnt_userns, struct path *link)
+int may_linkat(struct user_namespace *mnt_userns, const struct path *link)
 {
 	struct inode *inode = link->dentry->d_inode;
 

fs/notify/fanotify/fanotify.c

@@ -18,7 +18,7 @@
 
 #include "fanotify.h"
 
-static bool fanotify_path_equal(struct path *p1, struct path *p2)
+static bool fanotify_path_equal(const struct path *p1, const struct path *p2)
 {
 	return p1->mnt == p2->mnt && p1->dentry == p2->dentry;
 }