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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/jffs2/os-linux.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/jffs2/os-linux.h')
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1 files changed, 217 insertions, 0 deletions
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
new file mode 100644
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+++ b/fs/jffs2/os-linux.h
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1/*
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 *
10 * $Id: os-linux.h,v 1.51 2004/11/16 20:36:11 dwmw2 Exp $
11 *
12 */
13
14#ifndef __JFFS2_OS_LINUX_H__
15#define __JFFS2_OS_LINUX_H__
16#include <linux/version.h>
17
18/* JFFS2 uses Linux mode bits natively -- no need for conversion */
19#define os_to_jffs2_mode(x) (x)
20#define jffs2_to_os_mode(x) (x)
21
22#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,73)
23#define kstatfs statfs
24#endif
25
26struct kstatfs;
27struct kvec;
28
29#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,2)
30#define JFFS2_INODE_INFO(i) (list_entry(i, struct jffs2_inode_info, vfs_inode))
31#define OFNI_EDONI_2SFFJ(f) (&(f)->vfs_inode)
32#define JFFS2_SB_INFO(sb) (sb->s_fs_info)
33#define OFNI_BS_2SFFJ(c) ((struct super_block *)c->os_priv)
34#elif defined(JFFS2_OUT_OF_KERNEL)
35#define JFFS2_INODE_INFO(i) ((struct jffs2_inode_info *) &(i)->u)
36#define OFNI_EDONI_2SFFJ(f) ((struct inode *) ( ((char *)f) - ((char *)(&((struct inode *)NULL)->u)) ) )
37#define JFFS2_SB_INFO(sb) ((struct jffs2_sb_info *) &(sb)->u)
38#define OFNI_BS_2SFFJ(c) ((struct super_block *) ( ((char *)c) - ((char *)(&((struct super_block *)NULL)->u)) ) )
39#else
40#define JFFS2_INODE_INFO(i) (&i->u.jffs2_i)
41#define OFNI_EDONI_2SFFJ(f) ((struct inode *) ( ((char *)f) - ((char *)(&((struct inode *)NULL)->u)) ) )
42#define JFFS2_SB_INFO(sb) (&sb->u.jffs2_sb)
43#define OFNI_BS_2SFFJ(c) ((struct super_block *) ( ((char *)c) - ((char *)(&((struct super_block *)NULL)->u)) ) )
44#endif
45
46
47#define JFFS2_F_I_SIZE(f) (OFNI_EDONI_2SFFJ(f)->i_size)
48#define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode)
49#define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid)
50#define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid)
51
52#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,1)
53#define JFFS2_F_I_RDEV_MIN(f) (iminor(OFNI_EDONI_2SFFJ(f)))
54#define JFFS2_F_I_RDEV_MAJ(f) (imajor(OFNI_EDONI_2SFFJ(f)))
55#else
56#define JFFS2_F_I_RDEV_MIN(f) (MINOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))
57#define JFFS2_F_I_RDEV_MAJ(f) (MAJOR(to_kdev_t(OFNI_EDONI_2SFFJ(f)->i_rdev)))
58#endif
59
60/* Urgh. The things we do to keep the 2.4 build working */
61#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,47)
62#define ITIME(sec) ((struct timespec){sec, 0})
63#define I_SEC(tv) ((tv).tv_sec)
64#define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec)
65#define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec)
66#define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime.tv_sec)
67#else
68#define ITIME(x) (x)
69#define I_SEC(x) (x)
70#define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime)
71#define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime)
72#define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime)
73#endif
74
75#define sleep_on_spinunlock(wq, s) \
76 do { \
77 DECLARE_WAITQUEUE(__wait, current); \
78 add_wait_queue((wq), &__wait); \
79 set_current_state(TASK_UNINTERRUPTIBLE); \
80 spin_unlock(s); \
81 schedule(); \
82 remove_wait_queue((wq), &__wait); \
83 } while(0)
84
85static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
86{
87#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,2)
88 f->highest_version = 0;
89 f->fragtree = RB_ROOT;
90 f->metadata = NULL;
91 f->dents = NULL;
92 f->flags = 0;
93 f->usercompr = 0;
94#else
95 memset(f, 0, sizeof(*f));
96 init_MUTEX_LOCKED(&f->sem);
97#endif
98}
99
100#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
101
102#if (!defined CONFIG_JFFS2_FS_NAND && !defined CONFIG_JFFS2_FS_NOR_ECC)
103#define jffs2_can_mark_obsolete(c) (1)
104#define jffs2_cleanmarker_oob(c) (0)
105#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
106
107#define jffs2_flash_write(c, ofs, len, retlen, buf) ((c)->mtd->write((c)->mtd, ofs, len, retlen, buf))
108#define jffs2_flash_read(c, ofs, len, retlen, buf) ((c)->mtd->read((c)->mtd, ofs, len, retlen, buf))
109#define jffs2_flush_wbuf_pad(c) ({ (void)(c), 0; })
110#define jffs2_flush_wbuf_gc(c, i) ({ (void)(c), (void) i, 0; })
111#define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
112#define jffs2_nand_flash_setup(c) (0)
113#define jffs2_nand_flash_cleanup(c) do {} while(0)
114#define jffs2_wbuf_dirty(c) (0)
115#define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
116#define jffs2_wbuf_timeout NULL
117#define jffs2_wbuf_process NULL
118#define jffs2_nor_ecc(c) (0)
119#define jffs2_nor_ecc_flash_setup(c) (0)
120#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
121
122#else /* NAND and/or ECC'd NOR support present */
123
124#define jffs2_can_mark_obsolete(c) ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & MTD_ECC)) || c->mtd->type == MTD_RAM)
125#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
126
127#define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
128#define jffs2_flash_read_oob(c, ofs, len, retlen, buf) ((c)->mtd->read_oob((c)->mtd, ofs, len, retlen, buf))
129#define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
130
131/* wbuf.c */
132int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino);
133int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
134int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, u_char *buf);
135int jffs2_check_oob_empty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,int mode);
136int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
137int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
138int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
139void jffs2_wbuf_timeout(unsigned long data);
140void jffs2_wbuf_process(void *data);
141int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
142int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
143int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
144void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
145#ifdef CONFIG_JFFS2_FS_NOR_ECC
146#define jffs2_nor_ecc(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_ECC))
147int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c);
148void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c);
149#else
150#define jffs2_nor_ecc(c) (0)
151#define jffs2_nor_ecc_flash_setup(c) (0)
152#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
153#endif /* NOR ECC */
154#endif /* NAND */
155
156/* erase.c */
157static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
158{
159 OFNI_BS_2SFFJ(c)->s_dirt = 1;
160}
161
162/* background.c */
163int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c);
164void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c);
165void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
166
167/* dir.c */
168extern struct file_operations jffs2_dir_operations;
169extern struct inode_operations jffs2_dir_inode_operations;
170
171/* file.c */
172extern struct file_operations jffs2_file_operations;
173extern struct inode_operations jffs2_file_inode_operations;
174extern struct address_space_operations jffs2_file_address_operations;
175int jffs2_fsync(struct file *, struct dentry *, int);
176int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
177
178/* ioctl.c */
179int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
180
181/* symlink.c */
182extern struct inode_operations jffs2_symlink_inode_operations;
183
184/* fs.c */
185int jffs2_setattr (struct dentry *, struct iattr *);
186void jffs2_read_inode (struct inode *);
187void jffs2_clear_inode (struct inode *);
188void jffs2_dirty_inode(struct inode *inode);
189struct inode *jffs2_new_inode (struct inode *dir_i, int mode,
190 struct jffs2_raw_inode *ri);
191int jffs2_statfs (struct super_block *, struct kstatfs *);
192void jffs2_write_super (struct super_block *);
193int jffs2_remount_fs (struct super_block *, int *, char *);
194int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
195void jffs2_gc_release_inode(struct jffs2_sb_info *c,
196 struct jffs2_inode_info *f);
197struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
198 int inum, int nlink);
199
200unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
201 struct jffs2_inode_info *f,
202 unsigned long offset,
203 unsigned long *priv);
204void jffs2_gc_release_page(struct jffs2_sb_info *c,
205 unsigned char *pg,
206 unsigned long *priv);
207void jffs2_flash_cleanup(struct jffs2_sb_info *c);
208
209
210/* writev.c */
211int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
212 unsigned long count, loff_t to, size_t *retlen);
213
214
215#endif /* __JFFS2_OS_LINUX_H__ */
216
217