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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
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22#define JFFS2_INODE_INFO(i) (list_entry(i, struct jffs2_inode_info, vfs_inode))
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)
30#define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid)
31#define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid)
aef9ab47 32#define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev)
1da177e4 33
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34#define ITIME(sec) ((struct timespec){sec, 0})
35#define I_SEC(tv) ((tv).tv_sec)
36#define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec)
37#define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec)
38#define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime.tv_sec)
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39
40#define sleep_on_spinunlock(wq, s) \
41 do { \
42 DECLARE_WAITQUEUE(__wait, current); \
43 add_wait_queue((wq), &__wait); \
44 set_current_state(TASK_UNINTERRUPTIBLE); \
45 spin_unlock(s); \
46 schedule(); \
47 remove_wait_queue((wq), &__wait); \
48 } while(0)
49
50static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
51{
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52 f->highest_version = 0;
53 f->fragtree = RB_ROOT;
54 f->metadata = NULL;
55 f->dents = NULL;
2b79adcc 56 f->target = NULL;
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57 f->flags = 0;
58 f->usercompr = 0;
aa98d7cf
KK
59#ifdef CONFIG_JFFS2_FS_POSIX_ACL
60 f->i_acl_access = JFFS2_ACL_NOT_CACHED;
61 f->i_acl_default = JFFS2_ACL_NOT_CACHED;
62#endif
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63}
64
3be36675 65
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66#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
67
daba5cc4 68#define SECTOR_ADDR(x) ( (((unsigned long)(x) / c->sector_size) * c->sector_size) )
2f82ce1e 69#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
daba5cc4 70
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FH
71
72#ifdef CONFIG_JFFS2_SUMMARY
73#define jffs2_can_mark_obsolete(c) (0)
74#else
1da177e4 75#define jffs2_can_mark_obsolete(c) (1)
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76#endif
77
8cd79216 78#define jffs2_is_writebuffered(c) (0)
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79#define jffs2_cleanmarker_oob(c) (0)
80#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
81
e631ddba 82#define jffs2_flash_write(c, ofs, len, retlen, buf) jffs2_flash_direct_write(c, ofs, len, retlen, buf)
1da177e4 83#define jffs2_flash_read(c, ofs, len, retlen, buf) ((c)->mtd->read((c)->mtd, ofs, len, retlen, buf))
733802d9
AB
84#define jffs2_flush_wbuf_pad(c) ({ do{} while(0); (void)(c), 0; })
85#define jffs2_flush_wbuf_gc(c, i) ({ do{} while(0); (void)(c), (void) i, 0; })
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86#define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
87#define jffs2_nand_flash_setup(c) (0)
88#define jffs2_nand_flash_cleanup(c) do {} while(0)
89#define jffs2_wbuf_dirty(c) (0)
90#define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
91#define jffs2_wbuf_timeout NULL
92#define jffs2_wbuf_process NULL
8f15fd55 93#define jffs2_dataflash(c) (0)
751382dd
TP
94#define jffs2_dataflash_setup(c) (0)
95#define jffs2_dataflash_cleanup(c) do {} while (0)
9bfeb691 96#define jffs2_nor_wbuf_flash(c) (0)
59da721a
NP
97#define jffs2_nor_wbuf_flash_setup(c) (0)
98#define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
0029da3b
AB
99#define jffs2_ubivol(c) (0)
100#define jffs2_ubivol_setup(c) (0)
101#define jffs2_ubivol_cleanup(c) do {} while (0)
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102
103#else /* NAND and/or ECC'd NOR support present */
104
8cd79216 105#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
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106
107#ifdef CONFIG_JFFS2_SUMMARY
108#define jffs2_can_mark_obsolete(c) (0)
109#else
5fa43394 110#define jffs2_can_mark_obsolete(c) (c->mtd->flags & (MTD_BIT_WRITEABLE))
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FH
111#endif
112
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113#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
114
115#define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
116#define jffs2_flash_read_oob(c, ofs, len, retlen, buf) ((c)->mtd->read_oob((c)->mtd, ofs, len, retlen, buf))
117#define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
118
119/* wbuf.c */
120int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino);
121int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
122int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, u_char *buf);
123int jffs2_check_oob_empty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,int mode);
124int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
125int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
126int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
127void jffs2_wbuf_timeout(unsigned long data);
128void jffs2_wbuf_process(void *data);
129int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
130int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
131int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
132void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
2f82ce1e 133
8f15fd55
AV
134#define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
135int jffs2_dataflash_setup(struct jffs2_sb_info *c);
136void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
0029da3b
AB
137#define jffs2_ubivol(c) (c->mtd->type == MTD_UBIVOLUME)
138int jffs2_ubivol_setup(struct jffs2_sb_info *c);
139void jffs2_ubivol_cleanup(struct jffs2_sb_info *c);
2f82ce1e 140
5fa43394 141#define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && ! (c->mtd->flags & MTD_BIT_WRITEABLE))
59da721a
NP
142int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
143void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
144
2f82ce1e 145#endif /* WRITEBUFFER */
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146
147/* erase.c */
148static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
149{
150 OFNI_BS_2SFFJ(c)->s_dirt = 1;
151}
152
153/* background.c */
154int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c);
155void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c);
156void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
157
158/* dir.c */
4b6f5d20 159extern const struct file_operations jffs2_dir_operations;
92e1d5be 160extern const struct inode_operations jffs2_dir_inode_operations;
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161
162/* file.c */
4b6f5d20 163extern const struct file_operations jffs2_file_operations;
92e1d5be 164extern const struct inode_operations jffs2_file_inode_operations;
f5e54d6e 165extern const struct address_space_operations jffs2_file_address_operations;
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166int jffs2_fsync(struct file *, struct dentry *, int);
167int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
168
169/* ioctl.c */
170int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
171
172/* symlink.c */
92e1d5be 173extern const struct inode_operations jffs2_symlink_inode_operations;
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174
175/* fs.c */
176int jffs2_setattr (struct dentry *, struct iattr *);
177void jffs2_read_inode (struct inode *);
178void jffs2_clear_inode (struct inode *);
179void jffs2_dirty_inode(struct inode *inode);
180struct inode *jffs2_new_inode (struct inode *dir_i, int mode,
181 struct jffs2_raw_inode *ri);
726c3342 182int jffs2_statfs (struct dentry *, struct kstatfs *);
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183void jffs2_write_super (struct super_block *);
184int jffs2_remount_fs (struct super_block *, int *, char *);
185int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
186void jffs2_gc_release_inode(struct jffs2_sb_info *c,
187 struct jffs2_inode_info *f);
188struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
189 int inum, int nlink);
190
182ec4ee
TG
191unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
192 struct jffs2_inode_info *f,
1da177e4
LT
193 unsigned long offset,
194 unsigned long *priv);
195void jffs2_gc_release_page(struct jffs2_sb_info *c,
196 unsigned char *pg,
197 unsigned long *priv);
198void jffs2_flash_cleanup(struct jffs2_sb_info *c);
182ec4ee 199
1da177e4
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200
201/* writev.c */
182ec4ee 202int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
1da177e4 203 unsigned long count, loff_t to, size_t *retlen);
e631ddba
FH
204int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
205 size_t *retlen, const u_char *buf);
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206
207#endif /* __JFFS2_OS_LINUX_H__ */
208
209