fs: make helpers idmap mount aware
[linux-block.git] / fs / jffs2 / os-linux.h
CommitLineData
1da177e4
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1/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
c00c310e 4 * Copyright © 2001-2007 Red Hat, Inc.
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5 *
6 * Created by David Woodhouse <dwmw2@infradead.org>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
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10 */
11
12#ifndef __JFFS2_OS_LINUX_H__
13#define __JFFS2_OS_LINUX_H__
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14
15/* JFFS2 uses Linux mode bits natively -- no need for conversion */
16#define os_to_jffs2_mode(x) (x)
17#define jffs2_to_os_mode(x) (x)
18
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19struct kstatfs;
20struct kvec;
21
db6172c4 22#define JFFS2_INODE_INFO(i) (container_of(i, struct jffs2_inode_info, vfs_inode))
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23#define OFNI_EDONI_2SFFJ(f) (&(f)->vfs_inode)
24#define JFFS2_SB_INFO(sb) (sb->s_fs_info)
25#define OFNI_BS_2SFFJ(c) ((struct super_block *)c->os_priv)
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26
27
28#define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size)
29#define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode)
0cfe53d3
EB
30#define JFFS2_F_I_UID(f) (i_uid_read(OFNI_EDONI_2SFFJ(f)))
31#define JFFS2_F_I_GID(f) (i_gid_read(OFNI_EDONI_2SFFJ(f)))
aef9ab47 32#define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev)
1da177e4 33
5f7a01e2
AB
34#define JFFS2_CLAMP_TIME(t) ((uint32_t)clamp_t(time64_t, (t), 0, U32_MAX))
35#define ITIME(sec) ((struct timespec64){sec, 0})
36#define JFFS2_NOW() JFFS2_CLAMP_TIME(ktime_get_real_seconds())
37#define I_SEC(tv) JFFS2_CLAMP_TIME((tv).tv_sec)
38#define JFFS2_F_I_CTIME(f) I_SEC(OFNI_EDONI_2SFFJ(f)->i_ctime)
39#define JFFS2_F_I_MTIME(f) I_SEC(OFNI_EDONI_2SFFJ(f)->i_mtime)
40#define JFFS2_F_I_ATIME(f) I_SEC(OFNI_EDONI_2SFFJ(f)->i_atime)
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41#define sleep_on_spinunlock(wq, s) \
42 do { \
43 DECLARE_WAITQUEUE(__wait, current); \
44 add_wait_queue((wq), &__wait); \
45 set_current_state(TASK_UNINTERRUPTIBLE); \
46 spin_unlock(s); \
47 schedule(); \
48 remove_wait_queue((wq), &__wait); \
49 } while(0)
50
51static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
52{
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53 f->highest_version = 0;
54 f->fragtree = RB_ROOT;
55 f->metadata = NULL;
56 f->dents = NULL;
2b79adcc 57 f->target = NULL;
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58 f->flags = 0;
59 f->usercompr = 0;
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60}
61
3be36675 62
1751e8a6 63#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & SB_RDONLY)
1da177e4 64
daba5cc4 65#define SECTOR_ADDR(x) ( (((unsigned long)(x) / c->sector_size) * c->sector_size) )
2f82ce1e 66#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
daba5cc4 67
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FH
68
69#ifdef CONFIG_JFFS2_SUMMARY
70#define jffs2_can_mark_obsolete(c) (0)
71#else
1da177e4 72#define jffs2_can_mark_obsolete(c) (1)
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FH
73#endif
74
8cd79216 75#define jffs2_is_writebuffered(c) (0)
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76#define jffs2_cleanmarker_oob(c) (0)
77#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
78
e631ddba 79#define jffs2_flash_write(c, ofs, len, retlen, buf) jffs2_flash_direct_write(c, ofs, len, retlen, buf)
a6c22850 80#define jffs2_flash_read(c, ofs, len, retlen, buf) (mtd_read((c)->mtd, ofs, len, retlen, buf))
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AB
81#define jffs2_flush_wbuf_pad(c) ({ do{} while(0); (void)(c), 0; })
82#define jffs2_flush_wbuf_gc(c, i) ({ do{} while(0); (void)(c), (void) i, 0; })
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83#define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
84#define jffs2_nand_flash_setup(c) (0)
85#define jffs2_nand_flash_cleanup(c) do {} while(0)
86#define jffs2_wbuf_dirty(c) (0)
87#define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
88#define jffs2_wbuf_timeout NULL
89#define jffs2_wbuf_process NULL
8f15fd55 90#define jffs2_dataflash(c) (0)
751382dd
TP
91#define jffs2_dataflash_setup(c) (0)
92#define jffs2_dataflash_cleanup(c) do {} while (0)
9bfeb691 93#define jffs2_nor_wbuf_flash(c) (0)
59da721a
NP
94#define jffs2_nor_wbuf_flash_setup(c) (0)
95#define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
0029da3b
AB
96#define jffs2_ubivol(c) (0)
97#define jffs2_ubivol_setup(c) (0)
98#define jffs2_ubivol_cleanup(c) do {} while (0)
8bdc81c5 99#define jffs2_dirty_trigger(c) do {} while (0)
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100
101#else /* NAND and/or ECC'd NOR support present */
102
8cd79216 103#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
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FH
104
105#ifdef CONFIG_JFFS2_SUMMARY
106#define jffs2_can_mark_obsolete(c) (0)
107#else
5fa43394 108#define jffs2_can_mark_obsolete(c) (c->mtd->flags & (MTD_BIT_WRITEABLE))
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FH
109#endif
110
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111#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
112
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113#define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
114
115/* wbuf.c */
116int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino);
117int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
118int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, u_char *buf);
119int jffs2_check_oob_empty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,int mode);
120int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
121int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
122int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
123void jffs2_wbuf_timeout(unsigned long data);
124void jffs2_wbuf_process(void *data);
125int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
126int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
127int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
128void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
2f82ce1e 129
8f15fd55
AV
130#define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
131int jffs2_dataflash_setup(struct jffs2_sb_info *c);
132void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
0029da3b
AB
133#define jffs2_ubivol(c) (c->mtd->type == MTD_UBIVOLUME)
134int jffs2_ubivol_setup(struct jffs2_sb_info *c);
135void jffs2_ubivol_cleanup(struct jffs2_sb_info *c);
2f82ce1e 136
5fa43394 137#define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && ! (c->mtd->flags & MTD_BIT_WRITEABLE))
59da721a
NP
138int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
139void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
8bdc81c5 140void jffs2_dirty_trigger(struct jffs2_sb_info *c);
59da721a 141
2f82ce1e 142#endif /* WRITEBUFFER */
1da177e4 143
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144/* background.c */
145int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c);
146void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c);
147void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
148
149/* dir.c */
4b6f5d20 150extern const struct file_operations jffs2_dir_operations;
92e1d5be 151extern const struct inode_operations jffs2_dir_inode_operations;
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152
153/* file.c */
4b6f5d20 154extern const struct file_operations jffs2_file_operations;
92e1d5be 155extern const struct inode_operations jffs2_file_inode_operations;
f5e54d6e 156extern const struct address_space_operations jffs2_file_address_operations;
02c24a82 157int jffs2_fsync(struct file *, loff_t, loff_t, int);
265de8ce 158int jffs2_do_readpage_unlock(void *data, struct page *pg);
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159
160/* ioctl.c */
0533400b 161long jffs2_ioctl(struct file *, unsigned int, unsigned long);
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162
163/* symlink.c */
92e1d5be 164extern const struct inode_operations jffs2_symlink_inode_operations;
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165
166/* fs.c */
549c7297 167int jffs2_setattr (struct user_namespace *, struct dentry *, struct iattr *);
9ed437c5 168int jffs2_do_setattr (struct inode *, struct iattr *);
5451f79f 169struct inode *jffs2_iget(struct super_block *, unsigned long);
b57922d9 170void jffs2_evict_inode (struct inode *);
aa385729 171void jffs2_dirty_inode(struct inode *inode, int flags);
d3fb6120 172struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode,
cfc8dc6f 173 struct jffs2_raw_inode *ri);
726c3342 174int jffs2_statfs (struct dentry *, struct kstatfs *);
ec10a24f
DH
175int jffs2_do_remount_fs(struct super_block *sb, struct fs_context *fc);
176int jffs2_do_fill_super(struct super_block *sb, struct fs_context *fc);
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177void jffs2_gc_release_inode(struct jffs2_sb_info *c,
178 struct jffs2_inode_info *f);
179struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
1b690b48 180 int inum, int unlinked);
1da177e4 181
182ec4ee
TG
182unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
183 struct jffs2_inode_info *f,
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184 unsigned long offset,
185 unsigned long *priv);
1da177e4 186void jffs2_flash_cleanup(struct jffs2_sb_info *c);
182ec4ee 187
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188
189/* writev.c */
182ec4ee 190int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
1da177e4 191 unsigned long count, loff_t to, size_t *retlen);
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FH
192int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
193 size_t *retlen, const u_char *buf);
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194
195#endif /* __JFFS2_OS_LINUX_H__ */
196
197