12#ifndef __JFFS2_NODELIST_H__
13#define __JFFS2_NODELIST_H__
16#include <linux/types.h>
17#include <linux/jffs2.h>
18#include "jffs2_fs_sb.h"
19#include "jffs2_fs_i.h"
30#define JFFS2_NATIVE_ENDIAN
35#if defined(JFFS2_NATIVE_ENDIAN)
36#define cpu_to_je16(x) ((jint16_t){x})
37#define cpu_to_je32(x) ((jint32_t){x})
38#define cpu_to_jemode(x) ((jmode_t){os_to_jffs2_mode(x)})
40#define constant_cpu_to_je16(x) ((jint16_t){x})
41#define constant_cpu_to_je32(x) ((jint32_t){x})
43#define je16_to_cpu(x) ((x).v16)
44#define je32_to_cpu(x) ((x).v32)
45#define jemode_to_cpu(x) (jffs2_to_os_mode((x).m))
46#elif defined(JFFS2_BIG_ENDIAN)
47#define cpu_to_je16(x) ((jint16_t){cpu_to_be16(x)})
48#define cpu_to_je32(x) ((jint32_t){cpu_to_be32(x)})
49#define cpu_to_jemode(x) ((jmode_t){cpu_to_be32(os_to_jffs2_mode(x))})
51#define constant_cpu_to_je16(x) ((jint16_t){__constant_cpu_to_be16(x)})
52#define constant_cpu_to_je32(x) ((jint32_t){__constant_cpu_to_be32(x)})
54#define je16_to_cpu(x) (be16_to_cpu(x.v16))
55#define je32_to_cpu(x) (be32_to_cpu(x.v32))
56#define jemode_to_cpu(x) (be32_to_cpu(jffs2_to_os_mode((x).m)))
57#elif defined(JFFS2_LITTLE_ENDIAN)
58#define cpu_to_je16(x) ((jint16_t){cpu_to_le16(x)})
59#define cpu_to_je32(x) ((jint32_t){cpu_to_le32(x)})
60#define cpu_to_jemode(x) ((jmode_t){cpu_to_le32(os_to_jffs2_mode(x))})
62#define constant_cpu_to_je16(x) ((jint16_t){__constant_cpu_to_le16(x)})
63#define constant_cpu_to_je32(x) ((jint32_t){__constant_cpu_to_le32(x)})
65#define je16_to_cpu(x) (le16_to_cpu(x.v16))
66#define je32_to_cpu(x) (le32_to_cpu(x.v32))
67#define jemode_to_cpu(x) (le32_to_cpu(jffs2_to_os_mode((x).m)))
73#define JFFS2_MIN_NODE_HEADER sizeof(struct jffs2_raw_dirent)
88 uint32_t flash_offset;
95#define REF_LINK_NODE ((int32_t)-1)
96#define REF_EMPTY_NODE ((int32_t)-2)
99#define REFS_PER_BLOCK ((255/sizeof(struct jffs2_raw_node_ref))-1)
106 if (ref->flash_offset == REF_LINK_NODE) {
107 ref = ref->next_in_ino;
113 if (ref->flash_offset == REF_EMPTY_NODE)
121 while(raw->next_in_ino)
122 raw = raw->next_in_ino;
132#define REF_UNCHECKED 0
133#define REF_OBSOLETE 1
134#define REF_PRISTINE 2
136#define ref_flags(ref) ((ref)->flash_offset & 3)
137#define ref_offset(ref) ((ref)->flash_offset & ~3)
138#define ref_obsolete(ref) (((ref)->flash_offset & 3) == REF_OBSOLETE)
139#define mark_ref_normal(ref) do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0)
144#define dirent_node_state(rd) ( (je32_to_cpu((rd)->ino)?REF_PRISTINE:REF_NORMAL) )
176#ifdef CONFIG_JFFS2_FS_XATTR
188#define INO_STATE_UNCHECKED 0
189#define INO_STATE_CHECKING 1
190#define INO_STATE_PRESENT 2
191#define INO_STATE_CHECKEDABSENT 3
192#define INO_STATE_GC 4
193#define INO_STATE_READING 5
194#define INO_STATE_CLEARING 6
196#define INO_FLAGS_XATTR_CHECKED 0x01
197#define INO_FLAGS_IS_DIR 0x02
199#define RAWNODE_CLASS_INODE_CACHE 0
200#define RAWNODE_CLASS_XATTR_DATUM 1
201#define RAWNODE_CLASS_XATTR_REF 2
203#define INOCACHE_HASHSIZE_MIN 128
204#define INOCACHE_HASHSIZE_MAX 1024
206#define write_ofs(c) ((c)->nextblock->offset + (c)->sector_size - (c)->nextblock->free_size)
234 uint32_t partial_crc;
244 uint32_t highest_version;
245 uint32_t latest_mctime;
262 unsigned char name[];
283 uint32_t unchecked_size;
286 uint32_t wasted_size;
289 uint32_t allocated_refs;
296static inline int jffs2_blocks_use_vmalloc(
struct jffs2_sb_info *c)
298 return ((c->flash_size / c->sector_size) * sizeof (
struct jffs2_eraseblock)) > (128L * 1024L);
301#define ref_totlen(a, b, c) __jffs2_ref_totlen((a), (b), (c))
303#define ALLOC_NORMAL 0
304#define ALLOC_DELETION 1
306#define ALLOC_NORETRY 3
309#define VERYDIRTY(c, size) ((size) >= ((c)->sector_size / 2))
312#define ISDIRTY(size) ((size) > sizeof (struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN)
314#define PAD(x) (((x)+3)&~3)
319 if (old_valid_dev(rdev)) {
320 jdev->old_id = cpu_to_je16(old_encode_dev(rdev));
321 return sizeof(jdev->old_id);
323 jdev->new_id = cpu_to_je32(new_encode_dev(rdev));
324 return sizeof(jdev->new_id);
331 struct rb_node *node = rb_first(root);
341 struct rb_node *node = rb_last(root);
349#define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb)
350#define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb)
351#define frag_parent(frag) rb_entry(rb_parent(&(frag)->rb), struct jffs2_node_frag, rb)
352#define frag_left(frag) rb_entry((frag)->rb.rb_left, struct jffs2_node_frag, rb)
353#define frag_right(frag) rb_entry((frag)->rb.rb_right, struct jffs2_node_frag, rb)
354#define frag_erase(frag, list) rb_erase(&frag->rb, list)
356#define tn_next(tn) rb_entry(rb_next(&(tn)->rb), struct jffs2_tmp_dnode_info, rb)
357#define tn_prev(tn) rb_entry(rb_prev(&(tn)->rb), struct jffs2_tmp_dnode_info, rb)
358#define tn_parent(tn) rb_entry(rb_parent(&(tn)->rb), struct jffs2_tmp_dnode_info, rb)
359#define tn_left(tn) rb_entry((tn)->rb.rb_left, struct jffs2_tmp_dnode_info, rb)
360#define tn_right(tn) rb_entry((tn)->rb.rb_right, struct jffs2_tmp_dnode_info, rb)
361#define tn_erase(tn, list) rb_erase(&tn->rb, list)
362#define tn_last(list) rb_entry(rb_last(list), struct jffs2_tmp_dnode_info, rb)
363#define tn_first(list) rb_entry(rb_first(list), struct jffs2_tmp_dnode_info, rb)
379 uint32_t ofs, uint32_t len,
387int jffs2_reserve_space(
struct jffs2_sb_info *c, uint32_t minsize,
388 uint32_t *len,
int prio, uint32_t sumsize);
389int jffs2_reserve_space_gc(
struct jffs2_sb_info *c, uint32_t minsize,
390 uint32_t *len, uint32_t sumsize);
392 uint32_t ofs, uint32_t len,
402 uint32_t datalen,
int alloc_mode);
405 uint32_t namelen,
int alloc_mode);
408 uint32_t offset, uint32_t writelen, uint32_t *retlen);
414 uint8_t type,
const char *name,
int namelen, uint32_t time);
424int jffs2_create_slab_caches(
void);
425void jffs2_destroy_slab_caches(
void);
444#ifdef CONFIG_JFFS2_FS_XATTR
459 unsigned char *buf, uint32_t offset, uint32_t len);
473int jffs2_erase_pending_blocks(
struct jffs2_sb_info *c,
int count);
476#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
478int jffs2_flush_wbuf_gc(
struct jffs2_sb_info *c, uint32_t ino);
Definition: nodelist.h:278
Definition: nodelist.h:252
Definition: nodelist.h:214
Definition: nodelist.h:158
Definition: jffs2_fs_i.h:20
Definition: nodelist.h:270
Definition: nodelist.h:83
Definition: nodelist.h:241
Definition: jffs2_fs_sb.h:51
Definition: nodelist.h:229