ia64/linux-2.6.18-xen.hg

view fs/jffs2/os-linux.h @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
children
line source
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 1.64 2005/09/30 13:59:13 dedekind Exp $
11 *
12 */
14 #ifndef __JFFS2_OS_LINUX_H__
15 #define __JFFS2_OS_LINUX_H__
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)
21 struct kstatfs;
22 struct kvec;
24 #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)
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 #define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev)
36 #define ITIME(sec) ((struct timespec){sec, 0})
37 #define I_SEC(tv) ((tv).tv_sec)
38 #define JFFS2_F_I_CTIME(f) (OFNI_EDONI_2SFFJ(f)->i_ctime.tv_sec)
39 #define JFFS2_F_I_MTIME(f) (OFNI_EDONI_2SFFJ(f)->i_mtime.tv_sec)
40 #define JFFS2_F_I_ATIME(f) (OFNI_EDONI_2SFFJ(f)->i_atime.tv_sec)
42 #define sleep_on_spinunlock(wq, s) \
43 do { \
44 DECLARE_WAITQUEUE(__wait, current); \
45 add_wait_queue((wq), &__wait); \
46 set_current_state(TASK_UNINTERRUPTIBLE); \
47 spin_unlock(s); \
48 schedule(); \
49 remove_wait_queue((wq), &__wait); \
50 } while(0)
52 static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
53 {
54 f->highest_version = 0;
55 f->fragtree = RB_ROOT;
56 f->metadata = NULL;
57 f->dents = NULL;
58 f->target = NULL;
59 f->flags = 0;
60 f->usercompr = 0;
61 #ifdef CONFIG_JFFS2_FS_POSIX_ACL
62 f->i_acl_access = JFFS2_ACL_NOT_CACHED;
63 f->i_acl_default = JFFS2_ACL_NOT_CACHED;
64 #endif
65 }
68 #define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
70 #define SECTOR_ADDR(x) ( (((unsigned long)(x) / c->sector_size) * c->sector_size) )
71 #ifndef CONFIG_JFFS2_FS_WRITEBUFFER
74 #ifdef CONFIG_JFFS2_SUMMARY
75 #define jffs2_can_mark_obsolete(c) (0)
76 #else
77 #define jffs2_can_mark_obsolete(c) (1)
78 #endif
80 #define jffs2_is_writebuffered(c) (0)
81 #define jffs2_cleanmarker_oob(c) (0)
82 #define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
84 #define jffs2_flash_write(c, ofs, len, retlen, buf) jffs2_flash_direct_write(c, ofs, len, retlen, buf)
85 #define jffs2_flash_read(c, ofs, len, retlen, buf) ((c)->mtd->read((c)->mtd, ofs, len, retlen, buf))
86 #define jffs2_flush_wbuf_pad(c) ({ do{} while(0); (void)(c), 0; })
87 #define jffs2_flush_wbuf_gc(c, i) ({ do{} while(0); (void)(c), (void) i, 0; })
88 #define jffs2_write_nand_badblock(c,jeb,bad_offset) (1)
89 #define jffs2_nand_flash_setup(c) (0)
90 #define jffs2_nand_flash_cleanup(c) do {} while(0)
91 #define jffs2_wbuf_dirty(c) (0)
92 #define jffs2_flash_writev(a,b,c,d,e,f) jffs2_flash_direct_writev(a,b,c,d,e)
93 #define jffs2_wbuf_timeout NULL
94 #define jffs2_wbuf_process NULL
95 #define jffs2_dataflash(c) (0)
96 #define jffs2_dataflash_setup(c) (0)
97 #define jffs2_dataflash_cleanup(c) do {} while (0)
98 #define jffs2_nor_wbuf_flash(c) (0)
99 #define jffs2_nor_wbuf_flash_setup(c) (0)
100 #define jffs2_nor_wbuf_flash_cleanup(c) do {} while (0)
102 #else /* NAND and/or ECC'd NOR support present */
104 #define jffs2_is_writebuffered(c) (c->wbuf != NULL)
106 #ifdef CONFIG_JFFS2_SUMMARY
107 #define jffs2_can_mark_obsolete(c) (0)
108 #else
109 #define jffs2_can_mark_obsolete(c) (c->mtd->flags & (MTD_BIT_WRITEABLE))
110 #endif
112 #define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
114 #define jffs2_flash_write_oob(c, ofs, len, retlen, buf) ((c)->mtd->write_oob((c)->mtd, ofs, len, retlen, buf))
115 #define jffs2_flash_read_oob(c, ofs, len, retlen, buf) ((c)->mtd->read_oob((c)->mtd, ofs, len, retlen, buf))
116 #define jffs2_wbuf_dirty(c) (!!(c)->wbuf_len)
118 /* wbuf.c */
119 int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen, uint32_t ino);
120 int jffs2_flash_write(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, const u_char *buf);
121 int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *retlen, u_char *buf);
122 int jffs2_check_oob_empty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb,int mode);
123 int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
124 int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
125 int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t bad_offset);
126 void jffs2_wbuf_timeout(unsigned long data);
127 void jffs2_wbuf_process(void *data);
128 int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
129 int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
130 int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
131 void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
133 #define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
134 int jffs2_dataflash_setup(struct jffs2_sb_info *c);
135 void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
137 #define jffs2_nor_wbuf_flash(c) (c->mtd->type == MTD_NORFLASH && ! (c->mtd->flags & MTD_BIT_WRITEABLE))
138 int jffs2_nor_wbuf_flash_setup(struct jffs2_sb_info *c);
139 void jffs2_nor_wbuf_flash_cleanup(struct jffs2_sb_info *c);
141 #endif /* WRITEBUFFER */
143 /* erase.c */
144 static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
145 {
146 OFNI_BS_2SFFJ(c)->s_dirt = 1;
147 }
149 /* background.c */
150 int jffs2_start_garbage_collect_thread(struct jffs2_sb_info *c);
151 void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c);
152 void jffs2_garbage_collect_trigger(struct jffs2_sb_info *c);
154 /* dir.c */
155 extern const struct file_operations jffs2_dir_operations;
156 extern struct inode_operations jffs2_dir_inode_operations;
158 /* file.c */
159 extern const struct file_operations jffs2_file_operations;
160 extern struct inode_operations jffs2_file_inode_operations;
161 extern const struct address_space_operations jffs2_file_address_operations;
162 int jffs2_fsync(struct file *, struct dentry *, int);
163 int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
165 /* ioctl.c */
166 int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
168 /* symlink.c */
169 extern struct inode_operations jffs2_symlink_inode_operations;
171 /* fs.c */
172 int jffs2_setattr (struct dentry *, struct iattr *);
173 void jffs2_read_inode (struct inode *);
174 void jffs2_clear_inode (struct inode *);
175 void jffs2_dirty_inode(struct inode *inode);
176 struct inode *jffs2_new_inode (struct inode *dir_i, int mode,
177 struct jffs2_raw_inode *ri);
178 int jffs2_statfs (struct dentry *, struct kstatfs *);
179 void jffs2_write_super (struct super_block *);
180 int jffs2_remount_fs (struct super_block *, int *, char *);
181 int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
182 void jffs2_gc_release_inode(struct jffs2_sb_info *c,
183 struct jffs2_inode_info *f);
184 struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
185 int inum, int nlink);
187 unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
188 struct jffs2_inode_info *f,
189 unsigned long offset,
190 unsigned long *priv);
191 void jffs2_gc_release_page(struct jffs2_sb_info *c,
192 unsigned char *pg,
193 unsigned long *priv);
194 void jffs2_flash_cleanup(struct jffs2_sb_info *c);
197 /* writev.c */
198 int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
199 unsigned long count, loff_t to, size_t *retlen);
200 int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
201 size_t *retlen, const u_char *buf);
203 #endif /* __JFFS2_OS_LINUX_H__ */