disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/include/linux/namei.h
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@@ -2,6 +2,7 @@
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 #ifndef _LINUX_NAMEI_H
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 #define _LINUX_NAMEI_H
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+#include <linux/fs.h>
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 #include <linux/kernel.h>
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 #include <linux/path.h>
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 #include <linux/fcntl.h>
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@@ -14,38 +15,40 @@
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 /*
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  * Type of the last component on LOOKUP_PARENT
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  */
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-enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
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+enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT};
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-/*
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- * The bitmask for a lookup event:
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- *  - follow links at the end
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- *  - require a directory
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- *  - ending slashes ok even for nonexistent files
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- *  - internal "there are more path components" flag
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- *  - dentry cache is untrusted; force a real lookup
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- *  - suppress terminal automount
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- */
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-#define LOOKUP_FOLLOW		0x0001
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-#define LOOKUP_DIRECTORY	0x0002
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-#define LOOKUP_AUTOMOUNT	0x0004
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+/* pathwalk mode */
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+#define LOOKUP_FOLLOW		0x0001	/* follow links at the end */
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+#define LOOKUP_DIRECTORY	0x0002	/* require a directory */
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+#define LOOKUP_AUTOMOUNT	0x0004  /* force terminal automount */
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+#define LOOKUP_EMPTY		0x4000	/* accept empty path [user_... only] */
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+#define LOOKUP_DOWN		0x8000	/* follow mounts in the starting point */
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+#define LOOKUP_MOUNTPOINT	0x0080	/* follow mounts in the end */
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+#define LOOKUP_REVAL		0x0020	/* tell ->d_revalidate() to trust no cache */
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+#define LOOKUP_RCU		0x0040	/* RCU pathwalk mode; semi-internal */
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+
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+/* These tell filesystem methods that we are dealing with the final component... */
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+#define LOOKUP_OPEN		0x0100	/* ... in open */
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+#define LOOKUP_CREATE		0x0200	/* ... in object creation */
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+#define LOOKUP_EXCL		0x0400	/* ... in exclusive creation */
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+#define LOOKUP_RENAME_TARGET	0x0800	/* ... in destination of rename() */
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+
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+/* internal use only */
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 #define LOOKUP_PARENT		0x0010
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-#define LOOKUP_REVAL		0x0020
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-#define LOOKUP_RCU		0x0040
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-#define LOOKUP_NO_REVAL		0x0080
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-
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-/*
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- * Intent data
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- */
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-#define LOOKUP_OPEN		0x0100
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-#define LOOKUP_CREATE		0x0200
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-#define LOOKUP_EXCL		0x0400
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-#define LOOKUP_RENAME_TARGET	0x0800
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-
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 #define LOOKUP_JUMPED		0x1000
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 #define LOOKUP_ROOT		0x2000
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-#define LOOKUP_EMPTY		0x4000
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-#define LOOKUP_DOWN		0x8000
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+#define LOOKUP_ROOT_GRABBED	0x0008
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+
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+/* Scoping flags for lookup. */
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+#define LOOKUP_NO_SYMLINKS	0x010000 /* No symlink crossing. */
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+#define LOOKUP_NO_MAGICLINKS	0x020000 /* No nd_jump_link() crossing. */
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+#define LOOKUP_NO_XDEV		0x040000 /* No mountpoint crossing. */
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+#define LOOKUP_BENEATH		0x080000 /* No escaping from starting point. */
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+#define LOOKUP_IN_ROOT		0x100000 /* Treat dirfd as fs root. */
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+#define LOOKUP_CACHED		0x200000 /* Only do cached lookup */
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+/* LOOKUP_* flags which do scope-related checks based on the dirfd. */
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+#define LOOKUP_IS_SCOPED (LOOKUP_BENEATH | LOOKUP_IN_ROOT)
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 extern int path_pts(struct path *path);
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@@ -57,36 +60,17 @@
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 	return user_path_at_empty(dfd, name, flags, path, NULL);
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 }
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-static inline int user_path(const char __user *name, struct path *path)
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-{
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-	return user_path_at_empty(AT_FDCWD, name, LOOKUP_FOLLOW, path, NULL);
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-}
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-
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-static inline int user_lpath(const char __user *name, struct path *path)
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-{
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-	return user_path_at_empty(AT_FDCWD, name, 0, path, NULL);
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-}
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-
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-static inline int user_path_dir(const char __user *name, struct path *path)
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-{
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-	return user_path_at_empty(AT_FDCWD, name,
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-				  LOOKUP_FOLLOW | LOOKUP_DIRECTORY, path, NULL);
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-}
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-
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 extern int kern_path(const char *, unsigned, struct path *);
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 extern struct dentry *kern_path_create(int, const char *, struct path *, unsigned int);
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 extern struct dentry *user_path_create(int, const char __user *, struct path *, unsigned int);
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 extern void done_path_create(struct path *, struct dentry *);
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 extern struct dentry *kern_path_locked(const char *, struct path *);
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-extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
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-			   const char *, unsigned int, struct path *);
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-extern int kern_path_mountpoint(int, const char *, struct path *, unsigned int);
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 extern struct dentry *try_lookup_one_len(const char *, struct dentry *, int);
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 extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
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-extern struct dentry *lookup_one_len2(const char *, struct vfsmount *mnt, struct dentry *, int);
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 extern struct dentry *lookup_one_len_unlocked(const char *, struct dentry *, int);
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+extern struct dentry *lookup_positive_unlocked(const char *, struct dentry *, int);
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 extern int follow_down_one(struct path *);
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 extern int follow_down(struct path *);
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@@ -95,7 +79,7 @@
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 extern struct dentry *lock_rename(struct dentry *, struct dentry *);
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 extern void unlock_rename(struct dentry *, struct dentry *);
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-extern void nd_jump_link(struct path *path);
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+extern int __must_check nd_jump_link(struct path *path);
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 static inline void nd_terminate_link(void *name, size_t len, size_t maxlen)
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 {