Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * JFFS2 -- Journalling Flash File System, Version 2. | |
3 | * | |
4 | * Copyright (C) 2001-2003 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 | * | |
e631ddba | 10 | * $Id: nodelist.h,v 1.140 2005/09/07 08:34:54 havasi Exp $ |
1da177e4 LT |
11 | * |
12 | */ | |
13 | ||
14 | #ifndef __JFFS2_NODELIST_H__ | |
15 | #define __JFFS2_NODELIST_H__ | |
16 | ||
1da177e4 LT |
17 | #include <linux/fs.h> |
18 | #include <linux/types.h> | |
19 | #include <linux/jffs2.h> | |
cbb9a561 DW |
20 | #include "jffs2_fs_sb.h" |
21 | #include "jffs2_fs_i.h" | |
aa98d7cf KK |
22 | #include "xattr.h" |
23 | #include "acl.h" | |
e631ddba | 24 | #include "summary.h" |
1da177e4 LT |
25 | |
26 | #ifdef __ECOS | |
27 | #include "os-ecos.h" | |
28 | #else | |
730554d9 | 29 | #include <linux/mtd/compatmac.h> /* For compatibility with older kernels */ |
1da177e4 LT |
30 | #include "os-linux.h" |
31 | #endif | |
32 | ||
1da177e4 LT |
33 | #define JFFS2_NATIVE_ENDIAN |
34 | ||
35 | /* Note we handle mode bits conversion from JFFS2 (i.e. Linux) to/from | |
36 | whatever OS we're actually running on here too. */ | |
37 | ||
38 | #if defined(JFFS2_NATIVE_ENDIAN) | |
39 | #define cpu_to_je16(x) ((jint16_t){x}) | |
40 | #define cpu_to_je32(x) ((jint32_t){x}) | |
41 | #define cpu_to_jemode(x) ((jmode_t){os_to_jffs2_mode(x)}) | |
42 | ||
566865a2 DW |
43 | #define constant_cpu_to_je16(x) ((jint16_t){x}) |
44 | #define constant_cpu_to_je32(x) ((jint32_t){x}) | |
45 | ||
1da177e4 LT |
46 | #define je16_to_cpu(x) ((x).v16) |
47 | #define je32_to_cpu(x) ((x).v32) | |
48 | #define jemode_to_cpu(x) (jffs2_to_os_mode((x).m)) | |
49 | #elif defined(JFFS2_BIG_ENDIAN) | |
50 | #define cpu_to_je16(x) ((jint16_t){cpu_to_be16(x)}) | |
51 | #define cpu_to_je32(x) ((jint32_t){cpu_to_be32(x)}) | |
52 | #define cpu_to_jemode(x) ((jmode_t){cpu_to_be32(os_to_jffs2_mode(x))}) | |
53 | ||
566865a2 DW |
54 | #define constant_cpu_to_je16(x) ((jint16_t){__constant_cpu_to_be16(x)}) |
55 | #define constant_cpu_to_je32(x) ((jint32_t){__constant_cpu_to_be32(x)}) | |
56 | ||
1da177e4 LT |
57 | #define je16_to_cpu(x) (be16_to_cpu(x.v16)) |
58 | #define je32_to_cpu(x) (be32_to_cpu(x.v32)) | |
59 | #define jemode_to_cpu(x) (be32_to_cpu(jffs2_to_os_mode((x).m))) | |
60 | #elif defined(JFFS2_LITTLE_ENDIAN) | |
61 | #define cpu_to_je16(x) ((jint16_t){cpu_to_le16(x)}) | |
62 | #define cpu_to_je32(x) ((jint32_t){cpu_to_le32(x)}) | |
63 | #define cpu_to_jemode(x) ((jmode_t){cpu_to_le32(os_to_jffs2_mode(x))}) | |
64 | ||
566865a2 DW |
65 | #define constant_cpu_to_je16(x) ((jint16_t){__constant_cpu_to_le16(x)}) |
66 | #define constant_cpu_to_je32(x) ((jint32_t){__constant_cpu_to_le32(x)}) | |
67 | ||
1da177e4 LT |
68 | #define je16_to_cpu(x) (le16_to_cpu(x.v16)) |
69 | #define je32_to_cpu(x) (le32_to_cpu(x.v32)) | |
70 | #define jemode_to_cpu(x) (le32_to_cpu(jffs2_to_os_mode((x).m))) | |
182ec4ee | 71 | #else |
1da177e4 LT |
72 | #error wibble |
73 | #endif | |
74 | ||
1e0da3cb AB |
75 | /* The minimal node header size */ |
76 | #define JFFS2_MIN_NODE_HEADER sizeof(struct jffs2_raw_dirent) | |
77 | ||
1da177e4 LT |
78 | /* |
79 | This is all we need to keep in-core for each raw node during normal | |
80 | operation. As and when we do read_inode on a particular inode, we can | |
182ec4ee | 81 | scan the nodes which are listed for it and build up a proper map of |
1da177e4 LT |
82 | which nodes are currently valid. JFFSv1 always used to keep that whole |
83 | map in core for each inode. | |
84 | */ | |
85 | struct jffs2_raw_node_ref | |
86 | { | |
87 | struct jffs2_raw_node_ref *next_in_ino; /* Points to the next raw_node_ref | |
987d47b7 DW |
88 | for this object. If this _is_ the last, it points to the inode_cache, |
89 | xattr_ref or xattr_datum instead. The common part of those structures | |
90 | has NULL in the first word. See jffs2_raw_ref_to_ic() below */ | |
1da177e4 | 91 | uint32_t flash_offset; |
ca89a517 DW |
92 | #define TEST_TOTLEN |
93 | #ifdef TEST_TOTLEN | |
1da177e4 | 94 | uint32_t __totlen; /* This may die; use ref_totlen(c, jeb, ) below */ |
ca89a517 | 95 | #endif |
1da177e4 LT |
96 | }; |
97 | ||
9bfeb691 DW |
98 | #define REF_LINK_NODE ((int32_t)-1) |
99 | #define REF_EMPTY_NODE ((int32_t)-2) | |
100 | ||
101 | /* Use blocks of about 256 bytes */ | |
102 | #define REFS_PER_BLOCK ((255/sizeof(struct jffs2_raw_node_ref))-1) | |
103 | ||
104 | static inline struct jffs2_raw_node_ref *ref_next(struct jffs2_raw_node_ref *ref) | |
105 | { | |
106 | ref++; | |
107 | ||
108 | /* Link to another block of refs */ | |
109 | if (ref->flash_offset == REF_LINK_NODE) { | |
110 | ref = ref->next_in_ino; | |
111 | if (!ref) | |
112 | return ref; | |
113 | } | |
114 | ||
115 | /* End of chain */ | |
116 | if (ref->flash_offset == REF_EMPTY_NODE) | |
117 | return NULL; | |
118 | ||
119 | return ref; | |
120 | } | |
99988f7b | 121 | |
987d47b7 DW |
122 | static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw) |
123 | { | |
99988f7b | 124 | while(raw->next_in_ino) |
987d47b7 | 125 | raw = raw->next_in_ino; |
987d47b7 DW |
126 | |
127 | /* NB. This can be a jffs2_xattr_datum or jffs2_xattr_ref and | |
128 | not actually a jffs2_inode_cache. Check ->class */ | |
129 | return ((struct jffs2_inode_cache *)raw); | |
130 | } | |
131 | ||
1da177e4 LT |
132 | /* flash_offset & 3 always has to be zero, because nodes are |
133 | always aligned at 4 bytes. So we have a couple of extra bits | |
182ec4ee | 134 | to play with, which indicate the node's status; see below: */ |
1da177e4 LT |
135 | #define REF_UNCHECKED 0 /* We haven't yet checked the CRC or built its inode */ |
136 | #define REF_OBSOLETE 1 /* Obsolete, can be completely ignored */ | |
137 | #define REF_PRISTINE 2 /* Completely clean. GC without looking */ | |
138 | #define REF_NORMAL 3 /* Possibly overlapped. Read the page and write again on GC */ | |
139 | #define ref_flags(ref) ((ref)->flash_offset & 3) | |
140 | #define ref_offset(ref) ((ref)->flash_offset & ~3) | |
141 | #define ref_obsolete(ref) (((ref)->flash_offset & 3) == REF_OBSOLETE) | |
142 | #define mark_ref_normal(ref) do { (ref)->flash_offset = ref_offset(ref) | REF_NORMAL; } while(0) | |
6171586a DW |
143 | |
144 | /* NB: REF_PRISTINE for an inode-less node (ref->next_in_ino == NULL) indicates | |
145 | it is an unknown node of type JFFS2_NODETYPE_RWCOMPAT_COPY, so it'll get | |
146 | copied. If you need to do anything different to GC inode-less nodes, then | |
147 | you need to modify gc.c accordingly. */ | |
1da177e4 LT |
148 | |
149 | /* For each inode in the filesystem, we need to keep a record of | |
150 | nlink, because it would be a PITA to scan the whole directory tree | |
151 | at read_inode() time to calculate it, and to keep sufficient information | |
182ec4ee | 152 | in the raw_node_ref (basically both parent and child inode number for |
1da177e4 LT |
153 | dirent nodes) would take more space than this does. We also keep |
154 | a pointer to the first physical node which is part of this inode, too. | |
155 | */ | |
156 | struct jffs2_inode_cache { | |
987d47b7 DW |
157 | /* First part of structure is shared with other objects which |
158 | can terminate the raw node refs' next_in_ino list -- which | |
159 | currently struct jffs2_xattr_datum and struct jffs2_xattr_ref. */ | |
160 | ||
1da177e4 LT |
161 | struct jffs2_full_dirent *scan_dents; /* Used during scan to hold |
162 | temporary lists of dirents, and later must be set to | |
163 | NULL to mark the end of the raw_node_ref->next_in_ino | |
164 | chain. */ | |
1da177e4 | 165 | struct jffs2_raw_node_ref *nodes; |
987d47b7 DW |
166 | uint8_t class; /* It's used for identification */ |
167 | ||
168 | /* end of shared structure */ | |
169 | ||
170 | uint8_t flags; | |
171 | uint16_t state; | |
1da177e4 | 172 | uint32_t ino; |
987d47b7 | 173 | struct jffs2_inode_cache *next; |
aa98d7cf | 174 | #ifdef CONFIG_JFFS2_FS_XATTR |
8f2b6f49 | 175 | struct jffs2_xattr_ref *xref; |
aa98d7cf | 176 | #endif |
987d47b7 | 177 | int nlink; |
1da177e4 LT |
178 | }; |
179 | ||
180 | /* Inode states for 'state' above. We need the 'GC' state to prevent | |
181 | someone from doing a read_inode() while we're moving a 'REF_PRISTINE' | |
182 | node without going through all the iget() nonsense */ | |
183 | #define INO_STATE_UNCHECKED 0 /* CRC checks not yet done */ | |
184 | #define INO_STATE_CHECKING 1 /* CRC checks in progress */ | |
185 | #define INO_STATE_PRESENT 2 /* In core */ | |
186 | #define INO_STATE_CHECKEDABSENT 3 /* Checked, cleared again */ | |
187 | #define INO_STATE_GC 4 /* GCing a 'pristine' node */ | |
188 | #define INO_STATE_READING 5 /* In read_inode() */ | |
67e345d1 | 189 | #define INO_STATE_CLEARING 6 /* In clear_inode() */ |
1da177e4 | 190 | |
aa98d7cf KK |
191 | #define INO_FLAGS_XATTR_CHECKED 0x01 /* has no duplicate xattr_ref */ |
192 | ||
193 | #define RAWNODE_CLASS_INODE_CACHE 0 | |
194 | #define RAWNODE_CLASS_XATTR_DATUM 1 | |
195 | #define RAWNODE_CLASS_XATTR_REF 2 | |
196 | ||
1da177e4 LT |
197 | #define INOCACHE_HASHSIZE 128 |
198 | ||
9fe4854c DW |
199 | #define write_ofs(c) ((c)->nextblock->offset + (c)->sector_size - (c)->nextblock->free_size) |
200 | ||
1da177e4 | 201 | /* |
182ec4ee | 202 | Larger representation of a raw node, kept in-core only when the |
1da177e4 LT |
203 | struct inode for this particular ino is instantiated. |
204 | */ | |
205 | ||
206 | struct jffs2_full_dnode | |
207 | { | |
208 | struct jffs2_raw_node_ref *raw; | |
209 | uint32_t ofs; /* The offset to which the data of this node belongs */ | |
210 | uint32_t size; | |
211 | uint32_t frags; /* Number of fragments which currently refer | |
182ec4ee | 212 | to this node. When this reaches zero, |
1da177e4 LT |
213 | the node is obsolete. */ |
214 | }; | |
215 | ||
182ec4ee | 216 | /* |
1da177e4 LT |
217 | Even larger representation of a raw node, kept in-core only while |
218 | we're actually building up the original map of which nodes go where, | |
219 | in read_inode() | |
220 | */ | |
221 | struct jffs2_tmp_dnode_info | |
222 | { | |
9dee7503 | 223 | struct rb_node rb; |
1da177e4 LT |
224 | struct jffs2_full_dnode *fn; |
225 | uint32_t version; | |
1e0da3cb AB |
226 | uint32_t data_crc; |
227 | uint32_t partial_crc; | |
df8e96f3 DW |
228 | uint16_t csize; |
229 | uint16_t overlapped; | |
230 | }; | |
231 | ||
232 | /* Temporary data structure used during readinode. */ | |
233 | struct jffs2_readinode_info | |
234 | { | |
235 | struct rb_root tn_root; | |
236 | struct jffs2_tmp_dnode_info *mdata_tn; | |
237 | uint32_t highest_version; | |
238 | uint32_t latest_mctime; | |
239 | uint32_t mctime_ver; | |
240 | struct jffs2_full_dirent *fds; | |
241 | struct jffs2_raw_node_ref *latest_ref; | |
182ec4ee | 242 | }; |
1da177e4 LT |
243 | |
244 | struct jffs2_full_dirent | |
245 | { | |
246 | struct jffs2_raw_node_ref *raw; | |
247 | struct jffs2_full_dirent *next; | |
248 | uint32_t version; | |
249 | uint32_t ino; /* == zero for unlink */ | |
250 | unsigned int nhash; | |
251 | unsigned char type; | |
252 | unsigned char name[0]; | |
253 | }; | |
254 | ||
255 | /* | |
182ec4ee | 256 | Fragments - used to build a map of which raw node to obtain |
1da177e4 LT |
257 | data from for each part of the ino |
258 | */ | |
259 | struct jffs2_node_frag | |
260 | { | |
261 | struct rb_node rb; | |
262 | struct jffs2_full_dnode *node; /* NULL for holes */ | |
263 | uint32_t size; | |
264 | uint32_t ofs; /* The offset to which this fragment belongs */ | |
265 | }; | |
266 | ||
267 | struct jffs2_eraseblock | |
268 | { | |
269 | struct list_head list; | |
270 | int bad_count; | |
271 | uint32_t offset; /* of this block in the MTD */ | |
272 | ||
273 | uint32_t unchecked_size; | |
274 | uint32_t used_size; | |
275 | uint32_t dirty_size; | |
276 | uint32_t wasted_size; | |
277 | uint32_t free_size; /* Note that sector_size - free_size | |
278 | is the address of the first free space */ | |
9bfeb691 | 279 | uint32_t allocated_refs; |
1da177e4 LT |
280 | struct jffs2_raw_node_ref *first_node; |
281 | struct jffs2_raw_node_ref *last_node; | |
282 | ||
283 | struct jffs2_raw_node_ref *gc_node; /* Next node to be garbage collected */ | |
284 | }; | |
285 | ||
4ce1f562 FH |
286 | static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c) |
287 | { | |
288 | return ((c->flash_size / c->sector_size) * sizeof (struct jffs2_eraseblock)) > (128 * 1024); | |
289 | } | |
290 | ||
ca89a517 | 291 | #define ref_totlen(a, b, c) __jffs2_ref_totlen((a), (b), (c)) |
1da177e4 | 292 | |
1da177e4 LT |
293 | #define ALLOC_NORMAL 0 /* Normal allocation */ |
294 | #define ALLOC_DELETION 1 /* Deletion node. Best to allow it */ | |
295 | #define ALLOC_GC 2 /* Space requested for GC. Give it or die */ | |
296 | #define ALLOC_NORETRY 3 /* For jffs2_write_dnode: On failure, return -EAGAIN instead of retrying */ | |
297 | ||
298 | /* How much dirty space before it goes on the very_dirty_list */ | |
299 | #define VERYDIRTY(c, size) ((size) >= ((c)->sector_size / 2)) | |
300 | ||
301 | /* check if dirty space is more than 255 Byte */ | |
182ec4ee | 302 | #define ISDIRTY(size) ((size) > sizeof (struct jffs2_raw_inode) + JFFS2_MIN_DATA_LEN) |
1da177e4 LT |
303 | |
304 | #define PAD(x) (((x)+3)&~3) | |
305 | ||
aef9ab47 DW |
306 | static inline int jffs2_encode_dev(union jffs2_device_node *jdev, dev_t rdev) |
307 | { | |
308 | if (old_valid_dev(rdev)) { | |
309 | jdev->old = cpu_to_je16(old_encode_dev(rdev)); | |
310 | return sizeof(jdev->old); | |
311 | } else { | |
312 | jdev->new = cpu_to_je32(new_encode_dev(rdev)); | |
313 | return sizeof(jdev->new); | |
314 | } | |
315 | } | |
316 | ||
1da177e4 LT |
317 | static inline struct jffs2_node_frag *frag_first(struct rb_root *root) |
318 | { | |
ea7415cc | 319 | struct rb_node *node = rb_first(root); |
1da177e4 LT |
320 | |
321 | if (!node) | |
322 | return NULL; | |
ea7415cc | 323 | |
1da177e4 LT |
324 | return rb_entry(node, struct jffs2_node_frag, rb); |
325 | } | |
8557fd51 AB |
326 | |
327 | static inline struct jffs2_node_frag *frag_last(struct rb_root *root) | |
328 | { | |
ea7415cc | 329 | struct rb_node *node = rb_last(root); |
8557fd51 AB |
330 | |
331 | if (!node) | |
332 | return NULL; | |
ea7415cc | 333 | |
8557fd51 AB |
334 | return rb_entry(node, struct jffs2_node_frag, rb); |
335 | } | |
336 | ||
1da177e4 LT |
337 | #define frag_next(frag) rb_entry(rb_next(&(frag)->rb), struct jffs2_node_frag, rb) |
338 | #define frag_prev(frag) rb_entry(rb_prev(&(frag)->rb), struct jffs2_node_frag, rb) | |
339 | #define frag_parent(frag) rb_entry(rb_parent(&(frag)->rb), struct jffs2_node_frag, rb) | |
340 | #define frag_left(frag) rb_entry((frag)->rb.rb_left, struct jffs2_node_frag, rb) | |
341 | #define frag_right(frag) rb_entry((frag)->rb.rb_right, struct jffs2_node_frag, rb) | |
342 | #define frag_erase(frag, list) rb_erase(&frag->rb, list); | |
343 | ||
df8e96f3 DW |
344 | #define tn_next(tn) rb_entry(rb_next(&(tn)->rb), struct jffs2_tmp_dnode_info, rb) |
345 | #define tn_prev(tn) rb_entry(rb_prev(&(tn)->rb), struct jffs2_tmp_dnode_info, rb) | |
346 | #define tn_parent(tn) rb_entry(rb_parent(&(tn)->rb), struct jffs2_tmp_dnode_info, rb) | |
347 | #define tn_left(tn) rb_entry((tn)->rb.rb_left, struct jffs2_tmp_dnode_info, rb) | |
348 | #define tn_right(tn) rb_entry((tn)->rb.rb_right, struct jffs2_tmp_dnode_info, rb) | |
349 | #define tn_erase(tn, list) rb_erase(&tn->rb, list); | |
350 | #define tn_last(list) rb_entry(rb_last(list), struct jffs2_tmp_dnode_info, rb) | |
351 | #define tn_first(list) rb_entry(rb_first(list), struct jffs2_tmp_dnode_info, rb) | |
352 | ||
1da177e4 | 353 | /* nodelist.c */ |
1da177e4 | 354 | void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list); |
1da177e4 LT |
355 | void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state); |
356 | struct jffs2_inode_cache *jffs2_get_ino_cache(struct jffs2_sb_info *c, uint32_t ino); | |
357 | void jffs2_add_ino_cache (struct jffs2_sb_info *c, struct jffs2_inode_cache *new); | |
358 | void jffs2_del_ino_cache(struct jffs2_sb_info *c, struct jffs2_inode_cache *old); | |
359 | void jffs2_free_ino_caches(struct jffs2_sb_info *c); | |
360 | void jffs2_free_raw_node_refs(struct jffs2_sb_info *c); | |
361 | struct jffs2_node_frag *jffs2_lookup_node_frag(struct rb_root *fragtree, uint32_t offset); | |
362 | void jffs2_kill_fragtree(struct rb_root *root, struct jffs2_sb_info *c_delete); | |
1da177e4 LT |
363 | struct rb_node *rb_next(struct rb_node *); |
364 | struct rb_node *rb_prev(struct rb_node *); | |
365 | void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root); | |
f97117d1 | 366 | int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn); |
1e900979 | 367 | void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size); |
2f785402 DW |
368 | struct jffs2_raw_node_ref *jffs2_link_node_ref(struct jffs2_sb_info *c, |
369 | struct jffs2_eraseblock *jeb, | |
370 | uint32_t ofs, uint32_t len, | |
371 | struct jffs2_inode_cache *ic); | |
ca89a517 DW |
372 | extern uint32_t __jffs2_ref_totlen(struct jffs2_sb_info *c, |
373 | struct jffs2_eraseblock *jeb, | |
374 | struct jffs2_raw_node_ref *ref); | |
1da177e4 LT |
375 | |
376 | /* nodemgmt.c */ | |
377 | int jffs2_thread_should_wake(struct jffs2_sb_info *c); | |
9fe4854c | 378 | int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize, |
e631ddba | 379 | uint32_t *len, int prio, uint32_t sumsize); |
9fe4854c | 380 | int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize, |
e631ddba | 381 | uint32_t *len, uint32_t sumsize); |
2f785402 DW |
382 | struct jffs2_raw_node_ref *jffs2_add_physical_node_ref(struct jffs2_sb_info *c, |
383 | uint32_t ofs, uint32_t len, | |
384 | struct jffs2_inode_cache *ic); | |
1da177e4 LT |
385 | void jffs2_complete_reservation(struct jffs2_sb_info *c); |
386 | void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *raw); | |
1da177e4 LT |
387 | |
388 | /* write.c */ | |
389 | int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri); | |
390 | ||
9fe4854c DW |
391 | struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, |
392 | struct jffs2_raw_inode *ri, const unsigned char *data, | |
393 | uint32_t datalen, int alloc_mode); | |
394 | struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, | |
395 | struct jffs2_raw_dirent *rd, const unsigned char *name, | |
396 | uint32_t namelen, int alloc_mode); | |
1da177e4 | 397 | int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f, |
182ec4ee | 398 | struct jffs2_raw_inode *ri, unsigned char *buf, |
1da177e4 | 399 | uint32_t offset, uint32_t writelen, uint32_t *retlen); |
9fe4854c DW |
400 | int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, |
401 | struct jffs2_raw_inode *ri, const char *name, int namelen); | |
402 | int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, const char *name, | |
403 | int namelen, struct jffs2_inode_info *dead_f, uint32_t time); | |
404 | int jffs2_do_link(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, | |
405 | uint8_t type, const char *name, int namelen, uint32_t time); | |
1da177e4 LT |
406 | |
407 | ||
408 | /* readinode.c */ | |
182ec4ee | 409 | int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, |
1da177e4 LT |
410 | uint32_t ino, struct jffs2_raw_inode *latest_node); |
411 | int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); | |
412 | void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f); | |
413 | ||
414 | /* malloc.c */ | |
415 | int jffs2_create_slab_caches(void); | |
416 | void jffs2_destroy_slab_caches(void); | |
417 | ||
418 | struct jffs2_full_dirent *jffs2_alloc_full_dirent(int namesize); | |
419 | void jffs2_free_full_dirent(struct jffs2_full_dirent *); | |
420 | struct jffs2_full_dnode *jffs2_alloc_full_dnode(void); | |
421 | void jffs2_free_full_dnode(struct jffs2_full_dnode *); | |
422 | struct jffs2_raw_dirent *jffs2_alloc_raw_dirent(void); | |
423 | void jffs2_free_raw_dirent(struct jffs2_raw_dirent *); | |
424 | struct jffs2_raw_inode *jffs2_alloc_raw_inode(void); | |
425 | void jffs2_free_raw_inode(struct jffs2_raw_inode *); | |
426 | struct jffs2_tmp_dnode_info *jffs2_alloc_tmp_dnode_info(void); | |
427 | void jffs2_free_tmp_dnode_info(struct jffs2_tmp_dnode_info *); | |
9bfeb691 | 428 | int jffs2_prealloc_raw_node_refs(struct jffs2_sb_info *c, |
046b8b98 | 429 | struct jffs2_eraseblock *jeb, int nr); |
9bfeb691 | 430 | void jffs2_free_refblock(struct jffs2_raw_node_ref *); |
1da177e4 LT |
431 | struct jffs2_node_frag *jffs2_alloc_node_frag(void); |
432 | void jffs2_free_node_frag(struct jffs2_node_frag *); | |
433 | struct jffs2_inode_cache *jffs2_alloc_inode_cache(void); | |
434 | void jffs2_free_inode_cache(struct jffs2_inode_cache *); | |
aa98d7cf KK |
435 | #ifdef CONFIG_JFFS2_FS_XATTR |
436 | struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void); | |
437 | void jffs2_free_xattr_datum(struct jffs2_xattr_datum *); | |
438 | struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void); | |
439 | void jffs2_free_xattr_ref(struct jffs2_xattr_ref *); | |
440 | #endif | |
1da177e4 LT |
441 | |
442 | /* gc.c */ | |
443 | int jffs2_garbage_collect_pass(struct jffs2_sb_info *c); | |
444 | ||
445 | /* read.c */ | |
446 | int jffs2_read_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, | |
447 | struct jffs2_full_dnode *fd, unsigned char *buf, | |
448 | int ofs, int len); | |
449 | int jffs2_read_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f, | |
450 | unsigned char *buf, uint32_t offset, uint32_t len); | |
451 | char *jffs2_getlink(struct jffs2_sb_info *c, struct jffs2_inode_info *f); | |
452 | ||
453 | /* scan.c */ | |
454 | int jffs2_scan_medium(struct jffs2_sb_info *c); | |
455 | void jffs2_rotate_lists(struct jffs2_sb_info *c); | |
e631ddba FH |
456 | struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uint32_t ino); |
457 | int jffs2_scan_classify_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); | |
68270995 | 458 | int jffs2_scan_dirty_space(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, uint32_t size); |
1da177e4 LT |
459 | |
460 | /* build.c */ | |
461 | int jffs2_do_mount_fs(struct jffs2_sb_info *c); | |
462 | ||
463 | /* erase.c */ | |
464 | void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count); | |
c38c1b61 | 465 | void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); |
1da177e4 | 466 | |
2f82ce1e | 467 | #ifdef CONFIG_JFFS2_FS_WRITEBUFFER |
1da177e4 LT |
468 | /* wbuf.c */ |
469 | int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino); | |
470 | int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c); | |
471 | int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); | |
472 | int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb); | |
473 | #endif | |
474 | ||
730554d9 AB |
475 | #include "debug.h" |
476 | ||
1da177e4 | 477 | #endif /* __JFFS2_NODELIST_H__ */ |