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- /* SPDX-License-Identifier: GPL-2.0-or-later */
- /* fs/ internal definitions
- *
- * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells ([email protected])
- */
- struct super_block;
- struct file_system_type;
- struct iomap;
- struct iomap_ops;
- struct linux_binprm;
- struct path;
- struct mount;
- struct shrink_control;
- struct fs_context;
- struct user_namespace;
- struct pipe_inode_info;
- struct iov_iter;
- /*
- * block/bdev.c
- */
- #ifdef CONFIG_BLOCK
- extern void __init bdev_cache_init(void);
- void emergency_thaw_bdev(struct super_block *sb);
- #else
- static inline void bdev_cache_init(void)
- {
- }
- static inline int emergency_thaw_bdev(struct super_block *sb)
- {
- return 0;
- }
- #endif /* CONFIG_BLOCK */
- /*
- * buffer.c
- */
- int __block_write_begin_int(struct folio *folio, loff_t pos, unsigned len,
- get_block_t *get_block, const struct iomap *iomap);
- /*
- * char_dev.c
- */
- extern void __init chrdev_init(void);
- /*
- * fs_context.c
- */
- extern const struct fs_context_operations legacy_fs_context_ops;
- extern int parse_monolithic_mount_data(struct fs_context *, void *);
- extern void vfs_clean_context(struct fs_context *fc);
- extern int finish_clean_context(struct fs_context *fc);
- /*
- * namei.c
- */
- extern int filename_lookup(int dfd, struct filename *name, unsigned flags,
- struct path *path, struct path *root);
- 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, 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);
- int do_symlinkat(struct filename *from, int newdfd, struct filename *to);
- int do_linkat(int olddfd, struct filename *old, int newdfd,
- struct filename *new, int flags);
- /*
- * namespace.c
- */
- extern struct vfsmount *lookup_mnt(const struct path *);
- extern int finish_automount(struct vfsmount *, const struct path *);
- extern int sb_prepare_remount_readonly(struct super_block *);
- extern void __init mnt_init(void);
- extern int __mnt_want_write_file(struct file *);
- extern void __mnt_drop_write_file(struct file *);
- extern void dissolve_on_fput(struct vfsmount *);
- extern bool may_mount(void);
- int path_mount(const char *dev_name, struct path *path,
- const char *type_page, unsigned long flags, void *data_page);
- int path_umount(struct path *path, int flags);
- /*
- * fs_struct.c
- */
- extern void chroot_fs_refs(const struct path *, const struct path *);
- /*
- * file_table.c
- */
- extern struct file *alloc_empty_file(int, const struct cred *);
- extern struct file *alloc_empty_file_noaccount(int, const struct cred *);
- static inline void put_file_access(struct file *file)
- {
- if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) {
- i_readcount_dec(file->f_inode);
- } else if (file->f_mode & FMODE_WRITER) {
- put_write_access(file->f_inode);
- __mnt_drop_write(file->f_path.mnt);
- }
- }
- /*
- * super.c
- */
- extern int reconfigure_super(struct fs_context *);
- extern bool trylock_super(struct super_block *sb);
- struct super_block *user_get_super(dev_t, bool excl);
- void put_super(struct super_block *sb);
- extern bool mount_capable(struct fs_context *);
- /*
- * open.c
- */
- struct open_flags {
- int open_flag;
- umode_t mode;
- int acc_mode;
- int intent;
- int lookup_flags;
- };
- extern struct file *do_filp_open(int dfd, struct filename *pathname,
- const struct open_flags *op);
- extern struct file *do_file_open_root(const struct path *,
- const char *, const struct open_flags *);
- extern struct open_how build_open_how(int flags, umode_t mode);
- extern int build_open_flags(const struct open_how *how, struct open_flags *op);
- extern struct file *__close_fd_get_file(unsigned int fd);
- long do_sys_ftruncate(unsigned int fd, loff_t length, int small);
- int chmod_common(const struct path *path, umode_t mode);
- int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
- int flag);
- int chown_common(const struct path *path, uid_t user, gid_t group);
- extern int vfs_open(const struct path *, struct file *);
- /*
- * inode.c
- */
- extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc);
- int dentry_needs_remove_privs(struct user_namespace *, struct dentry *dentry);
- bool in_group_or_capable(struct user_namespace *mnt_userns,
- const struct inode *inode, vfsgid_t vfsgid);
- void lock_two_inodes(struct inode *inode1, struct inode *inode2,
- unsigned subclass1, unsigned subclass2);
- /*
- * fs-writeback.c
- */
- extern long get_nr_dirty_inodes(void);
- extern int invalidate_inodes(struct super_block *, bool);
- /*
- * dcache.c
- */
- extern int d_set_mounted(struct dentry *dentry);
- extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc);
- extern struct dentry *d_alloc_cursor(struct dentry *);
- extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
- extern char *simple_dname(struct dentry *, char *, int);
- extern void dput_to_list(struct dentry *, struct list_head *);
- extern void shrink_dentry_list(struct list_head *);
- /*
- * pipe.c
- */
- extern const struct file_operations pipefifo_fops;
- /*
- * fs_pin.c
- */
- extern void group_pin_kill(struct hlist_head *p);
- extern void mnt_pin_kill(struct mount *m);
- /*
- * fs/nsfs.c
- */
- extern const struct dentry_operations ns_dentry_operations;
- /* direct-io.c: */
- int sb_init_dio_done_wq(struct super_block *sb);
- /*
- * fs/stat.c:
- */
- int getname_statx_lookup_flags(int flags);
- int do_statx(int dfd, struct filename *filename, unsigned int flags,
- unsigned int mask, struct statx __user *buffer);
- /*
- * fs/splice.c:
- */
- long splice_file_to_pipe(struct file *in,
- struct pipe_inode_info *opipe,
- loff_t *offset,
- size_t len, unsigned int flags);
- /*
- * fs/xattr.c:
- */
- struct xattr_name {
- char name[XATTR_NAME_MAX + 1];
- };
- struct xattr_ctx {
- /* Value of attribute */
- union {
- const void __user *cvalue;
- void __user *value;
- };
- void *kvalue;
- size_t size;
- /* Attribute name */
- struct xattr_name *kname;
- unsigned int flags;
- };
- ssize_t do_getxattr(struct user_namespace *mnt_userns,
- struct dentry *d,
- struct xattr_ctx *ctx);
- int setxattr_copy(const char __user *name, struct xattr_ctx *ctx);
- int do_setxattr(struct user_namespace *mnt_userns, struct dentry *dentry,
- struct xattr_ctx *ctx);
- ssize_t __kernel_write_iter(struct file *file, struct iov_iter *from, loff_t *pos);
- /*
- * fs/attr.c
- */
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