| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* fs/ internal definitions |
| * |
| * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| */ |
| |
| 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); |
| |
| /* |
| * 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 |
| */ |
| int setattr_should_drop_sgid(struct user_namespace *mnt_userns, |
| const struct inode *inode); |