Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 2 | /* fs/ internal definitions |
| 3 | * |
| 4 | * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. |
| 5 | * Written by David Howells (dhowells@redhat.com) |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 6 | */ |
| 7 | |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 8 | struct super_block; |
Al Viro | 9d412a4 | 2011-03-17 22:08:28 -0400 | [diff] [blame] | 9 | struct file_system_type; |
Christoph Hellwig | ae259a9 | 2016-06-21 09:23:11 +1000 | [diff] [blame] | 10 | struct iomap; |
Christoph Hellwig | befb503 | 2016-09-19 11:24:49 +1000 | [diff] [blame] | 11 | struct iomap_ops; |
David Howells | a6f76f2 | 2008-11-14 10:39:24 +1100 | [diff] [blame] | 12 | struct linux_binprm; |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 13 | struct path; |
Al Viro | c710536 | 2011-11-24 18:22:03 -0500 | [diff] [blame] | 14 | struct mount; |
Vladimir Davydov | 503c358 | 2015-02-12 14:58:47 -0800 | [diff] [blame] | 15 | struct shrink_control; |
David Howells | 9bc61ab | 2018-11-04 03:19:03 -0500 | [diff] [blame] | 16 | struct fs_context; |
Al Viro | 2527b284 | 2019-05-12 17:09:01 -0400 | [diff] [blame] | 17 | struct user_namespace; |
Al Viro | b964bf5 | 2021-01-25 22:24:28 -0500 | [diff] [blame] | 18 | struct pipe_inode_info; |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 19 | |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 20 | /* |
Christoph Hellwig | 0dca446 | 2021-09-07 16:13:03 +0200 | [diff] [blame] | 21 | * block/bdev.c |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 22 | */ |
David Howells | 9361401 | 2006-09-30 20:45:40 +0200 | [diff] [blame] | 23 | #ifdef CONFIG_BLOCK |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 24 | extern void __init bdev_cache_init(void); |
| 25 | |
Christoph Hellwig | 3f1266f | 2020-06-20 09:16:41 +0200 | [diff] [blame] | 26 | void emergency_thaw_bdev(struct super_block *sb); |
Andrew Morton | 5e6d12b | 2006-08-31 12:55:23 +0200 | [diff] [blame] | 27 | #else |
| 28 | static inline void bdev_cache_init(void) |
| 29 | { |
| 30 | } |
Christoph Hellwig | 3f1266f | 2020-06-20 09:16:41 +0200 | [diff] [blame] | 31 | static inline int emergency_thaw_bdev(struct super_block *sb) |
| 32 | { |
| 33 | return 0; |
| 34 | } |
Christoph Hellwig | 3f1266f | 2020-06-20 09:16:41 +0200 | [diff] [blame] | 35 | #endif /* CONFIG_BLOCK */ |
David Howells | 7b0de42d | 2006-08-29 19:06:07 +0100 | [diff] [blame] | 36 | |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 37 | /* |
Akinobu Mita | 4db96b7 | 2014-10-09 15:26:55 -0700 | [diff] [blame] | 38 | * buffer.c |
| 39 | */ |
Matthew Wilcox (Oracle) | d1bd0b4 | 2021-11-03 14:05:47 -0400 | [diff] [blame] | 40 | int __block_write_begin_int(struct folio *folio, loff_t pos, unsigned len, |
Christoph Hellwig | 6d49cc8 | 2021-08-10 18:33:05 -0700 | [diff] [blame] | 41 | get_block_t *get_block, const struct iomap *iomap); |
Akinobu Mita | 4db96b7 | 2014-10-09 15:26:55 -0700 | [diff] [blame] | 42 | |
| 43 | /* |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 44 | * char_dev.c |
| 45 | */ |
| 46 | extern void __init chrdev_init(void); |
| 47 | |
| 48 | /* |
David Howells | 9bc61ab | 2018-11-04 03:19:03 -0500 | [diff] [blame] | 49 | * fs_context.c |
| 50 | */ |
David Howells | ecdab150 | 2018-11-01 23:36:09 +0000 | [diff] [blame] | 51 | extern const struct fs_context_operations legacy_fs_context_ops; |
David Howells | 9bc61ab | 2018-11-04 03:19:03 -0500 | [diff] [blame] | 52 | extern int parse_monolithic_mount_data(struct fs_context *, void *); |
David Howells | ecdab150 | 2018-11-01 23:36:09 +0000 | [diff] [blame] | 53 | extern void vfs_clean_context(struct fs_context *fc); |
| 54 | extern int finish_clean_context(struct fs_context *fc); |
David Howells | 9bc61ab | 2018-11-04 03:19:03 -0500 | [diff] [blame] | 55 | |
| 56 | /* |
David Howells | 0bdaea9 | 2012-06-25 12:55:46 +0100 | [diff] [blame] | 57 | * namei.c |
| 58 | */ |
David Howells | 31d921c | 2018-11-01 23:07:24 +0000 | [diff] [blame] | 59 | extern int filename_lookup(int dfd, struct filename *name, unsigned flags, |
| 60 | struct path *path, struct path *root); |
Al Viro | 197df04 | 2013-09-08 14:03:27 -0400 | [diff] [blame] | 61 | extern int vfs_path_lookup(struct dentry *, struct vfsmount *, |
| 62 | const char *, unsigned int, struct path *); |
Dmitry Kadashev | 45f30da | 2021-07-08 13:34:44 +0700 | [diff] [blame] | 63 | int do_rmdir(int dfd, struct filename *name); |
| 64 | int do_unlinkat(int dfd, struct filename *name); |
Christian Brauner | ba73d98 | 2021-01-21 14:19:31 +0100 | [diff] [blame] | 65 | int may_linkat(struct user_namespace *mnt_userns, struct path *link); |
Jens Axboe | e886663 | 2020-09-26 17:20:17 -0600 | [diff] [blame] | 66 | int do_renameat2(int olddfd, struct filename *oldname, int newdfd, |
| 67 | struct filename *newname, unsigned int flags); |
Dmitry Kadashev | 45f30da | 2021-07-08 13:34:44 +0700 | [diff] [blame] | 68 | int do_mkdirat(int dfd, struct filename *name, umode_t mode); |
Dmitry Kadashev | 7a8721f | 2021-07-08 13:34:46 +0700 | [diff] [blame] | 69 | int do_symlinkat(struct filename *from, int newdfd, struct filename *to); |
Dmitry Kadashev | cf30da9 | 2021-07-08 13:34:47 +0700 | [diff] [blame] | 70 | int do_linkat(int olddfd, struct filename *old, int newdfd, |
| 71 | struct filename *new, int flags); |
David Howells | 0bdaea9 | 2012-06-25 12:55:46 +0100 | [diff] [blame] | 72 | |
| 73 | /* |
David Howells | 07f3f05 | 2006-09-30 20:52:18 +0200 | [diff] [blame] | 74 | * namespace.c |
| 75 | */ |
Al Viro | ca71cf7 | 2016-11-20 19:45:28 -0500 | [diff] [blame] | 76 | extern struct vfsmount *lookup_mnt(const struct path *); |
Al Viro | 1e2d8464 | 2021-06-18 20:27:57 -0400 | [diff] [blame] | 77 | extern int finish_automount(struct vfsmount *, const struct path *); |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 78 | |
Miklos Szeredi | 4ed5e82f | 2011-11-21 12:11:31 +0100 | [diff] [blame] | 79 | extern int sb_prepare_remount_readonly(struct super_block *); |
Al Viro | f03c659 | 2011-01-14 22:30:21 -0500 | [diff] [blame] | 80 | |
Al Viro | 6d59e7f | 2008-03-22 15:48:17 -0400 | [diff] [blame] | 81 | extern void __init mnt_init(void); |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 82 | |
Jan Kara | eb04c28 | 2012-06-12 16:20:35 +0200 | [diff] [blame] | 83 | extern int __mnt_want_write_file(struct file *); |
Jan Kara | eb04c28 | 2012-06-12 16:20:35 +0200 | [diff] [blame] | 84 | extern void __mnt_drop_write_file(struct file *); |
Al Viro | 47cd813f | 2010-02-05 02:01:14 -0500 | [diff] [blame] | 85 | |
Al Viro | a07b200 | 2018-11-05 17:40:30 +0000 | [diff] [blame] | 86 | extern void dissolve_on_fput(struct vfsmount *); |
Al Viro | a5f85d7 | 2022-03-01 00:05:29 -0500 | [diff] [blame] | 87 | extern bool may_mount(void); |
Christoph Hellwig | c60166f | 2020-07-21 11:12:08 +0200 | [diff] [blame] | 88 | |
| 89 | int path_mount(const char *dev_name, struct path *path, |
| 90 | const char *type_page, unsigned long flags, void *data_page); |
Christoph Hellwig | 09267de | 2020-07-23 08:23:08 +0200 | [diff] [blame] | 91 | int path_umount(struct path *path, int flags); |
Christoph Hellwig | c60166f | 2020-07-21 11:12:08 +0200 | [diff] [blame] | 92 | |
Al Viro | 3e93cd6 | 2009-03-29 19:00:13 -0400 | [diff] [blame] | 93 | /* |
| 94 | * fs_struct.c |
| 95 | */ |
Al Viro | dcf787f | 2013-03-01 23:51:07 -0500 | [diff] [blame] | 96 | extern void chroot_fs_refs(const struct path *, const struct path *); |
npiggin@suse.de | 864d7c4 | 2009-04-26 20:25:56 +1000 | [diff] [blame] | 97 | |
| 98 | /* |
| 99 | * file_table.c |
| 100 | */ |
Al Viro | ea73ea7 | 2018-07-11 15:00:04 -0400 | [diff] [blame] | 101 | extern struct file *alloc_empty_file(int, const struct cred *); |
Miklos Szeredi | d3b1084 | 2018-07-18 15:44:40 +0200 | [diff] [blame] | 102 | extern struct file *alloc_empty_file_noaccount(int, const struct cred *); |
Al Viro | 62c6943 | 2009-05-07 03:12:29 -0400 | [diff] [blame] | 103 | |
| 104 | /* |
| 105 | * super.c |
| 106 | */ |
David Howells | 8d0347f | 2018-11-04 09:28:36 -0500 | [diff] [blame] | 107 | extern int reconfigure_super(struct fs_context *); |
Konstantin Khlebnikov | eb6ef3d | 2015-02-19 20:19:35 +0300 | [diff] [blame] | 108 | extern bool trylock_super(struct super_block *sb); |
Christoph Hellwig | 4e7b567 | 2020-11-23 13:38:40 +0100 | [diff] [blame] | 109 | struct super_block *user_get_super(dev_t, bool excl); |
Christoph Hellwig | 60b4988 | 2020-11-16 15:21:18 +0100 | [diff] [blame] | 110 | void put_super(struct super_block *sb); |
Al Viro | 20284ab | 2019-05-12 17:31:45 -0400 | [diff] [blame] | 111 | extern bool mount_capable(struct fs_context *); |
Al Viro | 482928d | 2009-12-19 10:10:39 -0500 | [diff] [blame] | 112 | |
| 113 | /* |
| 114 | * open.c |
| 115 | */ |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 116 | struct open_flags { |
| 117 | int open_flag; |
Al Viro | a218d0f | 2011-11-21 14:59:34 -0500 | [diff] [blame] | 118 | umode_t mode; |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 119 | int acc_mode; |
| 120 | int intent; |
Al Viro | f9652e1 | 2013-06-11 08:23:01 +0400 | [diff] [blame] | 121 | int lookup_flags; |
Al Viro | 47c805d | 2011-02-23 17:44:09 -0500 | [diff] [blame] | 122 | }; |
Jeff Layton | 669abf4 | 2012-10-10 16:43:10 -0400 | [diff] [blame] | 123 | extern struct file *do_filp_open(int dfd, struct filename *pathname, |
Al Viro | f9652e1 | 2013-06-11 08:23:01 +0400 | [diff] [blame] | 124 | const struct open_flags *op); |
Al Viro | ffb37ca | 2021-04-01 19:00:57 -0400 | [diff] [blame] | 125 | extern struct file *do_file_open_root(const struct path *, |
Al Viro | f9652e1 | 2013-06-11 08:23:01 +0400 | [diff] [blame] | 126 | const char *, const struct open_flags *); |
Jens Axboe | 35cb6d5 | 2019-12-13 11:10:11 -0700 | [diff] [blame] | 127 | extern struct open_how build_open_how(int flags, umode_t mode); |
| 128 | extern int build_open_flags(const struct open_how *how, struct open_flags *op); |
Al Viro | 6319194e | 2022-05-12 17:08:03 -0400 | [diff] [blame] | 129 | extern struct file *__close_fd_get_file(unsigned int fd); |
Al Viro | a8dade3 | 2010-10-24 11:13:10 -0400 | [diff] [blame] | 130 | |
Dominik Brodowski | 411d947 | 2018-03-11 11:34:54 +0100 | [diff] [blame] | 131 | long do_sys_ftruncate(unsigned int fd, loff_t length, int small); |
Christoph Hellwig | 1097742 | 2020-07-22 11:41:02 +0200 | [diff] [blame] | 132 | int chmod_common(const struct path *path, umode_t mode); |
Dominik Brodowski | 55731b3 | 2018-03-11 11:34:55 +0100 | [diff] [blame] | 133 | int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group, |
| 134 | int flag); |
Christoph Hellwig | b873498 | 2020-07-22 11:13:26 +0200 | [diff] [blame] | 135 | int chown_common(const struct path *path, uid_t user, gid_t group); |
Al Viro | ae2bb29 | 2018-07-10 13:22:28 -0400 | [diff] [blame] | 136 | extern int vfs_open(const struct path *, struct file *); |
Aneesh Kumar K.V | becfd1f | 2011-01-29 18:43:26 +0530 | [diff] [blame] | 137 | |
Al Viro | a8dade3 | 2010-10-24 11:13:10 -0400 | [diff] [blame] | 138 | /* |
| 139 | * inode.c |
| 140 | */ |
Vladimir Davydov | 503c358 | 2015-02-12 14:58:47 -0800 | [diff] [blame] | 141 | extern long prune_icache_sb(struct super_block *sb, struct shrink_control *sc); |
Miklos Szeredi | f0fce87 | 2016-08-03 13:44:27 +0200 | [diff] [blame] | 142 | extern int dentry_needs_remove_privs(struct dentry *dentry); |
Dave Chinner | 55fa609 | 2011-03-22 22:23:40 +1100 | [diff] [blame] | 143 | |
Dave Chinner | a66979a | 2011-03-22 22:23:41 +1100 | [diff] [blame] | 144 | /* |
| 145 | * fs-writeback.c |
| 146 | */ |
Glauber Costa | 3942c07 | 2013-08-28 10:17:53 +1000 | [diff] [blame] | 147 | extern long get_nr_dirty_inodes(void); |
NeilBrown | 93b270f | 2011-02-24 17:25:47 +1100 | [diff] [blame] | 148 | extern int invalidate_inodes(struct super_block *, bool); |
Al Viro | a4464db | 2011-07-07 15:03:58 -0400 | [diff] [blame] | 149 | |
| 150 | /* |
| 151 | * dcache.c |
| 152 | */ |
Miklos Szeredi | eed8100 | 2013-09-05 14:39:11 +0200 | [diff] [blame] | 153 | extern int d_set_mounted(struct dentry *dentry); |
Vladimir Davydov | 503c358 | 2015-02-12 14:58:47 -0800 | [diff] [blame] | 154 | extern long prune_dcache_sb(struct super_block *sb, struct shrink_control *sc); |
Al Viro | ba65dc5 | 2016-06-10 11:32:47 -0400 | [diff] [blame] | 155 | extern struct dentry *d_alloc_cursor(struct dentry *); |
Al Viro | ab1152d | 2019-03-15 22:58:11 -0400 | [diff] [blame] | 156 | extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *); |
Al Viro | 7e5f7bb | 2019-05-20 13:44:57 +0100 | [diff] [blame] | 157 | extern char *simple_dname(struct dentry *, char *, int); |
Al Viro | 9bdebc2 | 2019-06-29 18:31:24 -0400 | [diff] [blame] | 158 | extern void dput_to_list(struct dentry *, struct list_head *); |
| 159 | extern void shrink_dentry_list(struct list_head *); |
Al Viro | 06ae43f3 | 2013-03-20 13:19:30 -0400 | [diff] [blame] | 160 | |
| 161 | /* |
Al Viro | 599a0ac | 2013-03-12 09:58:10 -0400 | [diff] [blame] | 162 | * pipe.c |
| 163 | */ |
| 164 | extern const struct file_operations pipefifo_fops; |
Al Viro | 8fa1f1c | 2014-05-21 18:22:52 -0400 | [diff] [blame] | 165 | |
| 166 | /* |
| 167 | * fs_pin.c |
| 168 | */ |
Al Viro | fdab684 | 2015-01-11 10:57:27 -0500 | [diff] [blame] | 169 | extern void group_pin_kill(struct hlist_head *p); |
Al Viro | 8fa1f1c | 2014-05-21 18:22:52 -0400 | [diff] [blame] | 170 | extern void mnt_pin_kill(struct mount *m); |
Al Viro | e149ed2 | 2014-11-01 10:57:28 -0400 | [diff] [blame] | 171 | |
| 172 | /* |
| 173 | * fs/nsfs.c |
| 174 | */ |
Rasmus Villemoes | be218aa | 2016-09-15 00:15:34 +0200 | [diff] [blame] | 175 | extern const struct dentry_operations ns_dentry_operations; |
Al Viro | 66cf191 | 2016-01-07 09:53:30 -0500 | [diff] [blame] | 176 | |
Christoph Hellwig | ec1b826 | 2016-11-30 14:33:53 +1100 | [diff] [blame] | 177 | /* direct-io.c: */ |
| 178 | int sb_init_dio_done_wq(struct super_block *sb); |
Jens Axboe | 3934e36 | 2019-12-14 13:26:33 -0700 | [diff] [blame] | 179 | |
| 180 | /* |
| 181 | * fs/stat.c: |
| 182 | */ |
Stefan Roesch | 1b6fe6e | 2022-02-25 10:53:26 -0800 | [diff] [blame] | 183 | |
| 184 | int getname_statx_lookup_flags(int flags); |
| 185 | int do_statx(int dfd, struct filename *filename, unsigned int flags, |
Bijan Mottahedeh | 0018784 | 2020-05-22 21:31:17 -0700 | [diff] [blame] | 186 | unsigned int mask, struct statx __user *buffer); |
Al Viro | b964bf5 | 2021-01-25 22:24:28 -0500 | [diff] [blame] | 187 | |
| 188 | /* |
| 189 | * fs/splice.c: |
| 190 | */ |
| 191 | long splice_file_to_pipe(struct file *in, |
| 192 | struct pipe_inode_info *opipe, |
| 193 | loff_t *offset, |
| 194 | size_t len, unsigned int flags); |
Stefan Roesch | 1a91794 | 2022-04-24 18:10:46 -0600 | [diff] [blame] | 195 | |
| 196 | /* |
| 197 | * fs/xattr.c: |
| 198 | */ |
| 199 | struct xattr_name { |
| 200 | char name[XATTR_NAME_MAX + 1]; |
| 201 | }; |
| 202 | |
| 203 | struct xattr_ctx { |
| 204 | /* Value of attribute */ |
| 205 | union { |
| 206 | const void __user *cvalue; |
| 207 | void __user *value; |
| 208 | }; |
| 209 | void *kvalue; |
| 210 | size_t size; |
| 211 | /* Attribute name */ |
| 212 | struct xattr_name *kname; |
| 213 | unsigned int flags; |
| 214 | }; |
| 215 | |
Stefan Roesch | c975cad | 2022-04-24 18:13:50 -0600 | [diff] [blame] | 216 | |
| 217 | ssize_t do_getxattr(struct user_namespace *mnt_userns, |
| 218 | struct dentry *d, |
| 219 | struct xattr_ctx *ctx); |
| 220 | |
Stefan Roesch | 1a91794 | 2022-04-24 18:10:46 -0600 | [diff] [blame] | 221 | int setxattr_copy(const char __user *name, struct xattr_ctx *ctx); |
| 222 | int do_setxattr(struct user_namespace *mnt_userns, struct dentry *dentry, |
| 223 | struct xattr_ctx *ctx); |