Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* fs/ internal definitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Written by David Howells (dhowells@redhat.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) struct super_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) struct file_system_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) struct iomap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) struct iomap_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) struct linux_binprm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) struct path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) struct mount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) struct shrink_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) struct fs_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) struct user_namespace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20)  * block_dev.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #ifdef CONFIG_BLOCK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) extern void __init bdev_cache_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) extern int __sync_blockdev(struct block_device *bdev, int wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) void iterate_bdevs(void (*)(struct block_device *, void *), void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) void emergency_thaw_bdev(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) void bd_forget(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) static inline void bdev_cache_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) static inline int __sync_blockdev(struct block_device *bdev, int wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static inline void iterate_bdevs(void (*f)(struct block_device *, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 		void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) static inline int emergency_thaw_bdev(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) static inline void bd_forget(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) #endif /* CONFIG_BLOCK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52)  * buffer.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) extern int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		get_block_t *get_block, struct iomap *iomap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58)  * char_dev.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) extern void __init chrdev_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63)  * fs_context.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) extern const struct fs_context_operations legacy_fs_context_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) extern int parse_monolithic_mount_data(struct fs_context *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) extern void vfs_clean_context(struct fs_context *fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) extern int finish_clean_context(struct fs_context *fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  * namei.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) extern int filename_lookup(int dfd, struct filename *name, unsigned flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 			   struct path *path, struct path *root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 			   const char *, unsigned int, struct path *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) long do_rmdir(int dfd, struct filename *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) long do_unlinkat(int dfd, struct filename *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) int may_linkat(struct path *link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82)  * namespace.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) extern struct vfsmount *lookup_mnt(const struct path *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) extern int finish_automount(struct vfsmount *, struct path *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) extern int sb_prepare_remount_readonly(struct super_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) extern void __init mnt_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) extern int __mnt_want_write_file(struct file *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) extern void __mnt_drop_write_file(struct file *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) extern void dissolve_on_fput(struct vfsmount *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) int path_mount(const char *dev_name, struct path *path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		const char *type_page, unsigned long flags, void *data_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) int path_umount(struct path *path, int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)  * fs_struct.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) extern void chroot_fs_refs(const struct path *, const struct path *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)  * file_table.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) extern struct file *alloc_empty_file(int, const struct cred *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)  * super.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) extern int reconfigure_super(struct fs_context *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) extern bool trylock_super(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) extern struct super_block *user_get_super(dev_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) extern bool mount_capable(struct fs_context *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)  * open.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct open_flags {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	int open_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	umode_t mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	int acc_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	int intent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	int lookup_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) extern struct file *do_filp_open(int dfd, struct filename *pathname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		const struct open_flags *op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		const char *, const struct open_flags *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) extern struct open_how build_open_how(int flags, umode_t mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) extern int build_open_flags(const struct open_how *how, struct open_flags *op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) int chmod_common(const struct path *path, umode_t mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		int flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int chown_common(const struct path *path, uid_t user, gid_t group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) extern int vfs_open(const struct path *, struct file *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)  * inode.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) extern void inode_add_lru(struct inode *inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) extern int dentry_needs_remove_privs(struct dentry *dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)  * fs-writeback.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) extern long get_nr_dirty_inodes(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) extern int invalidate_inodes(struct super_block *, bool);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)  * dcache.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) extern int d_set_mounted(struct dentry *dentry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) extern struct dentry *d_alloc_cursor(struct dentry *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) extern char *simple_dname(struct dentry *, char *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) extern void dput_to_list(struct dentry *, struct list_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) extern void shrink_dentry_list(struct list_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)  * read_write.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)  * pipe.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) extern const struct file_operations pipefifo_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)  * fs_pin.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) extern void group_pin_kill(struct hlist_head *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) extern void mnt_pin_kill(struct mount *m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)  * fs/nsfs.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) extern const struct dentry_operations ns_dentry_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) /* direct-io.c: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) int sb_init_dio_done_wq(struct super_block *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)  * fs/stat.c:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) int do_statx(int dfd, const char __user *filename, unsigned flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	     unsigned int mask, struct statx __user *buffer);