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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright (C) 2002-2003 Red Hat, Inc.
5 *
6 * Created by David Woodhouse <dwmw2@infradead.org>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
Todd Poynor751382d2005-07-12 03:34:39 +010010 * $Id: os-linux.h,v 1.58 2005/07/12 02:34:35 tpoynor Exp $
Linus Torvalds1da177e2005-04-16 15:20:36 -070011 *
12 */
13
14#ifndef __JFFS2_OS_LINUX_H__
15#define __JFFS2_OS_LINUX_H__
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17/* JFFS2 uses Linux mode bits natively -- no need for conversion */
18#define os_to_jffs2_mode(x) (x)
19#define jffs2_to_os_mode(x) (x)
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021struct kstatfs;
22struct kvec;
23
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#define JFFS2_INODE_INFO(i) (list_entry(i, struct jffs2_inode_info, vfs_inode))
25#define OFNI_EDONI_2SFFJ(f) (&(f)->vfs_inode)
26#define JFFS2_SB_INFO(sb) (sb->s_fs_info)
27#define OFNI_BS_2SFFJ(c) ((struct super_block *)c->os_priv)
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29
30#define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size)
31#define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode)
32#define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid)
33#define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid)
34
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#define JFFS2_F_I_RDEV_MIN(f) (iminor(OFNI_EDONI_2SFFJ(f)))
36#define JFFS2_F_I_RDEV_MAJ(f) (imajor(OFNI_EDONI_2SFFJ(f)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Linus Torvalds1da177e2005-04-16 15:20:36 -070038#define ITIME(sec) ((struct timespec){sec, 0})
39#define I_SEC(tv) ((tv).tv_sec)
40#define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec)
41#define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec)
42#define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime.tv_sec)
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44#define sleep_on_spinunlock(wq, s) \
45 do { \
46 DECLARE_WAITQUEUE(__wait, current); \
47 add_wait_queue((wq), &__wait); \
48 set_current_state(TASK_UNINTERRUPTIBLE); \
49 spin_unlock(s); \
50 schedule(); \
51 remove_wait_queue((wq), &__wait); \
52 } while(0)
53
54static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
55{
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 f->highest_version = 0;
57 f->fragtree = RB_ROOT;
58 f->metadata = NULL;
59 f->dents = NULL;
60 f->flags = 0;
61 f->usercompr = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070062}
63
Andrew Victor3be36672005-02-09 09:09:05 +000064
Linus Torvalds1da177e2005-04-16 15:20:36 -070065#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Andrew Victor2f82ce12005-02-09 09:24:26 +000067#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
68#define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) )
Linus Torvalds1da177e2005-04-16 15:20:36 -070069#define jffs2_can_mark_obsolete(c) (1)
Artem B. Bityuckiy8cd79212005-05-03 16:19:02 +010070#define jffs2_is_writebuffered(c) (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071#define jffs2_cleanmarker_oob(c) (0)
72#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
73
74#define jffs2_flash_write(c, ofs, len, retlen, buf) ((c)->mtd->write((c)->mtd, ofs, len, retlen, buf))
75#define jffs2_flash_read(c, ofs, len, retlen, buf) ((c)->mtd->read((c)->mtd, ofs, len, retlen, buf))
76#define jffs2_flush_wbuf_pad(c) ({ (void)(c), 0; })
77#define jffs2_flush_wbuf_gc(c, i) ({ (void)(c), (void) i, 0; })
78#define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
79#define jffs2_nand_flash_setup(c) (0)
80#define jffs2_nand_flash_cleanup(c) do {} while(0)
81#define jffs2_wbuf_dirty(c) (0)
82#define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
83#define jffs2_wbuf_timeout NULL
84#define jffs2_wbuf_process NULL
85#define jffs2_nor_ecc(c) (0)
Andrew Victor8f15fd52005-02-09 09:17:45 +000086#define jffs2_dataflash(c) (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070087#define jffs2_nor_ecc_flash_setup(c) (0)
88#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
Todd Poynor751382d2005-07-12 03:34:39 +010089#define jffs2_dataflash_setup(c) (0)
90#define jffs2_dataflash_cleanup(c) do {} while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92#else /* NAND and/or ECC'd NOR support present */
93
Artem B. Bityuckiy8cd79212005-05-03 16:19:02 +010094#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
Andrew Victor2f82ce12005-02-09 09:24:26 +000095#define SECTOR_ADDR(x) ( ((unsigned long)(x) / (unsigned long)(c->sector_size)) * c->sector_size )
Linus Torvalds1da177e2005-04-16 15:20:36 -070096#define jffs2_can_mark_obsolete(c) ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & MTD_ECC)) || c->mtd->type == MTD_RAM)
97#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
98
99#define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
100#define jffs2_flash_read_oob(c, ofs, len, retlen, buf) ((c)->mtd->read_oob((c)->mtd, ofs, len, retlen, buf))
101#define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
102
103/* wbuf.c */
104int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino);
105int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
106int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, u_char *buf);
107int jffs2_check_oob_empty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,int mode);
108int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
109int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
110int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
111void jffs2_wbuf_timeout(unsigned long data);
112void jffs2_wbuf_process(void *data);
113int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
114int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
115int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
116void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
Andrew Victor2f82ce12005-02-09 09:24:26 +0000117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#define jffs2_nor_ecc(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_ECC))
119int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c);
120void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c);
Andrew Victor2f82ce12005-02-09 09:24:26 +0000121
Andrew Victor8f15fd52005-02-09 09:17:45 +0000122#define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
123int jffs2_dataflash_setup(struct jffs2_sb_info *c);
124void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
Andrew Victor2f82ce12005-02-09 09:24:26 +0000125
126#endif /* WRITEBUFFER */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127
128/* erase.c */
129static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
130{
131 OFNI_BS_2SFFJ(c)->s_dirt = 1;
132}
133
134/* background.c */
135int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c);
136void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c);
137void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
138
139/* dir.c */
140extern struct file_operations jffs2_dir_operations;
141extern struct inode_operations jffs2_dir_inode_operations;
142
143/* file.c */
144extern struct file_operations jffs2_file_operations;
145extern struct inode_operations jffs2_file_inode_operations;
146extern struct address_space_operations jffs2_file_address_operations;
147int jffs2_fsync(struct file *, struct dentry *, int);
148int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
149
150/* ioctl.c */
151int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
152
153/* symlink.c */
154extern struct inode_operations jffs2_symlink_inode_operations;
155
156/* fs.c */
157int jffs2_setattr (struct dentry *, struct iattr *);
158void jffs2_read_inode (struct inode *);
159void jffs2_clear_inode (struct inode *);
160void jffs2_dirty_inode(struct inode *inode);
161struct inode *jffs2_new_inode (struct inode *dir_i, int mode,
162 struct jffs2_raw_inode *ri);
163int jffs2_statfs (struct super_block *, struct kstatfs *);
164void jffs2_write_super (struct super_block *);
165int jffs2_remount_fs (struct super_block *, int *, char *);
166int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
167void jffs2_gc_release_inode(struct jffs2_sb_info *c,
168 struct jffs2_inode_info *f);
169struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
170 int inum, int nlink);
171
172unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
173 struct jffs2_inode_info *f,
174 unsigned long offset,
175 unsigned long *priv);
176void jffs2_gc_release_page(struct jffs2_sb_info *c,
177 unsigned char *pg,
178 unsigned long *priv);
179void jffs2_flash_cleanup(struct jffs2_sb_info *c);
180
181
182/* writev.c */
183int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
184 unsigned long count, loff_t to, size_t *retlen);
185
186
187#endif /* __JFFS2_OS_LINUX_H__ */
188
189