Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 10 | * $Id: write.c,v 1.97 2005/11/07 11:14:42 gleixner Exp $ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/fs.h> |
| 16 | #include <linux/crc32.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/pagemap.h> |
| 19 | #include <linux/mtd/mtd.h> |
| 20 | #include "nodelist.h" |
| 21 | #include "compr.h" |
| 22 | |
| 23 | |
| 24 | int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri) |
| 25 | { |
| 26 | struct jffs2_inode_cache *ic; |
| 27 | |
| 28 | ic = jffs2_alloc_inode_cache(); |
| 29 | if (!ic) { |
| 30 | return -ENOMEM; |
| 31 | } |
| 32 | |
| 33 | memset(ic, 0, sizeof(*ic)); |
| 34 | |
| 35 | f->inocache = ic; |
| 36 | f->inocache->nlink = 1; |
| 37 | f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | f->inocache->state = INO_STATE_PRESENT; |
KaiGai Kohei | aa98d7c | 2006-05-13 15:09:47 +0900 | [diff] [blame] | 39 | init_xattr_inode_cache(f->inocache); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | jffs2_add_ino_cache(c, f->inocache); |
David Woodhouse | 7d20096 | 2005-04-13 14:22:38 +0100 | [diff] [blame] | 42 | D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino)); |
| 43 | ri->ino = cpu_to_je32(f->inocache->ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); |
| 46 | ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE); |
| 47 | ri->totlen = cpu_to_je32(PAD(sizeof(*ri))); |
| 48 | ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4)); |
| 49 | ri->mode = cpu_to_jemode(mode); |
| 50 | |
| 51 | f->highest_version = 1; |
| 52 | ri->version = cpu_to_je32(f->highest_version); |
| 53 | |
| 54 | return 0; |
| 55 | } |
| 56 | |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 57 | /* jffs2_write_dnode - given a raw_inode, allocate a full_dnode for it, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | write it to the flash, link it into the existing inode/fragment list */ |
| 59 | |
| 60 | struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode) |
| 61 | |
| 62 | { |
| 63 | struct jffs2_raw_node_ref *raw; |
| 64 | struct jffs2_full_dnode *fn; |
| 65 | size_t retlen; |
| 66 | struct kvec vecs[2]; |
| 67 | int ret; |
| 68 | int retried = 0; |
| 69 | unsigned long cnt = 2; |
| 70 | |
| 71 | D1(if(je32_to_cpu(ri->hdr_crc) != crc32(0, ri, sizeof(struct jffs2_unknown_node)-4)) { |
| 72 | printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dnode()\n"); |
| 73 | BUG(); |
| 74 | } |
| 75 | ); |
| 76 | vecs[0].iov_base = ri; |
| 77 | vecs[0].iov_len = sizeof(*ri); |
| 78 | vecs[1].iov_base = (unsigned char *)data; |
| 79 | vecs[1].iov_len = datalen; |
| 80 | |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 81 | jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
| 83 | if (je32_to_cpu(ri->totlen) != sizeof(*ri) + datalen) { |
| 84 | printk(KERN_WARNING "jffs2_write_dnode: ri->totlen (0x%08x) != sizeof(*ri) (0x%08zx) + datalen (0x%08x)\n", je32_to_cpu(ri->totlen), sizeof(*ri), datalen); |
| 85 | } |
| 86 | raw = jffs2_alloc_raw_node_ref(); |
| 87 | if (!raw) |
| 88 | return ERR_PTR(-ENOMEM); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | fn = jffs2_alloc_full_dnode(); |
| 91 | if (!fn) { |
| 92 | jffs2_free_raw_node_ref(raw); |
| 93 | return ERR_PTR(-ENOMEM); |
| 94 | } |
| 95 | |
| 96 | fn->ofs = je32_to_cpu(ri->offset); |
| 97 | fn->size = je32_to_cpu(ri->dsize); |
| 98 | fn->frags = 0; |
| 99 | |
| 100 | /* check number of valid vecs */ |
| 101 | if (!datalen || !data) |
| 102 | cnt = 1; |
| 103 | retry: |
| 104 | fn->raw = raw; |
| 105 | |
| 106 | raw->flash_offset = flash_ofs; |
| 107 | raw->__totlen = PAD(sizeof(*ri)+datalen); |
| 108 | raw->next_phys = NULL; |
| 109 | |
Estelle Hammache | 9b88f47 | 2005-01-28 18:53:05 +0000 | [diff] [blame] | 110 | if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version)) { |
| 111 | BUG_ON(!retried); |
| 112 | D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d, " |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 113 | "highest version %d -> updating dnode\n", |
Estelle Hammache | 9b88f47 | 2005-01-28 18:53:05 +0000 | [diff] [blame] | 114 | je32_to_cpu(ri->version), f->highest_version)); |
| 115 | ri->version = cpu_to_je32(++f->highest_version); |
| 116 | ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8)); |
Estelle Hammache | e4803c3 | 2005-01-24 21:13:42 +0000 | [diff] [blame] | 117 | } |
| 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | ret = jffs2_flash_writev(c, vecs, cnt, flash_ofs, &retlen, |
| 120 | (alloc_mode==ALLOC_GC)?0:f->inocache->ino); |
| 121 | |
| 122 | if (ret || (retlen != sizeof(*ri) + datalen)) { |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 123 | printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | sizeof(*ri)+datalen, flash_ofs, ret, retlen); |
| 125 | |
| 126 | /* Mark the space as dirtied */ |
| 127 | if (retlen) { |
| 128 | /* Doesn't belong to any inode */ |
| 129 | raw->next_in_ino = NULL; |
| 130 | |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 131 | /* Don't change raw->size to match retlen. We may have |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | written the node header already, and only the data will |
| 133 | seem corrupted, in which case the scan would skip over |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 134 | any node we write before the original intended end of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | this node */ |
| 136 | raw->flash_offset |= REF_OBSOLETE; |
| 137 | jffs2_add_physical_node_ref(c, raw); |
| 138 | jffs2_mark_node_obsolete(c, raw); |
| 139 | } else { |
| 140 | printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", raw->flash_offset); |
| 141 | jffs2_free_raw_node_ref(raw); |
| 142 | } |
| 143 | if (!retried && alloc_mode != ALLOC_NORETRY && (raw = jffs2_alloc_raw_node_ref())) { |
| 144 | /* Try to reallocate space and retry */ |
| 145 | uint32_t dummy; |
| 146 | struct jffs2_eraseblock *jeb = &c->blocks[flash_ofs / c->sector_size]; |
| 147 | |
| 148 | retried = 1; |
| 149 | |
| 150 | D1(printk(KERN_DEBUG "Retrying failed write.\n")); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 151 | |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 152 | jffs2_dbg_acct_sanity_check(c,jeb); |
| 153 | jffs2_dbg_acct_paranoia_check(c, jeb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
| 155 | if (alloc_mode == ALLOC_GC) { |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 156 | ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &flash_ofs, |
| 157 | &dummy, JFFS2_SUMMARY_INODE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | } else { |
| 159 | /* Locking pain */ |
| 160 | up(&f->sem); |
| 161 | jffs2_complete_reservation(c); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 162 | |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 163 | ret = jffs2_reserve_space(c, sizeof(*ri) + datalen, &flash_ofs, |
| 164 | &dummy, alloc_mode, JFFS2_SUMMARY_INODE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | down(&f->sem); |
| 166 | } |
| 167 | |
| 168 | if (!ret) { |
| 169 | D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs)); |
| 170 | |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 171 | jffs2_dbg_acct_sanity_check(c,jeb); |
| 172 | jffs2_dbg_acct_paranoia_check(c, jeb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
| 174 | goto retry; |
| 175 | } |
| 176 | D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret)); |
| 177 | jffs2_free_raw_node_ref(raw); |
| 178 | } |
| 179 | /* Release the full_dnode which is now useless, and return */ |
| 180 | jffs2_free_full_dnode(fn); |
| 181 | return ERR_PTR(ret?ret:-EIO); |
| 182 | } |
| 183 | /* Mark the space used */ |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 184 | /* If node covers at least a whole page, or if it starts at the |
| 185 | beginning of a page and runs to the end of the file, or if |
| 186 | it's a hole node, mark it REF_PRISTINE, else REF_NORMAL. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | */ |
| 188 | if ((je32_to_cpu(ri->dsize) >= PAGE_CACHE_SIZE) || |
| 189 | ( ((je32_to_cpu(ri->offset)&(PAGE_CACHE_SIZE-1))==0) && |
| 190 | (je32_to_cpu(ri->dsize)+je32_to_cpu(ri->offset) == je32_to_cpu(ri->isize)))) { |
| 191 | raw->flash_offset |= REF_PRISTINE; |
| 192 | } else { |
| 193 | raw->flash_offset |= REF_NORMAL; |
| 194 | } |
| 195 | jffs2_add_physical_node_ref(c, raw); |
| 196 | |
| 197 | /* Link into per-inode list */ |
| 198 | spin_lock(&c->erase_completion_lock); |
| 199 | raw->next_in_ino = f->inocache->nodes; |
| 200 | f->inocache->nodes = raw; |
| 201 | spin_unlock(&c->erase_completion_lock); |
| 202 | |
| 203 | D1(printk(KERN_DEBUG "jffs2_write_dnode wrote node at 0x%08x(%d) with dsize 0x%x, csize 0x%x, node_crc 0x%08x, data_crc 0x%08x, totlen 0x%08x\n", |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 204 | flash_ofs, ref_flags(raw), je32_to_cpu(ri->dsize), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | je32_to_cpu(ri->csize), je32_to_cpu(ri->node_crc), |
| 206 | je32_to_cpu(ri->data_crc), je32_to_cpu(ri->totlen))); |
| 207 | |
| 208 | if (retried) { |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 209 | jffs2_dbg_acct_sanity_check(c,NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | return fn; |
| 213 | } |
| 214 | |
| 215 | struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_dirent *rd, const unsigned char *name, uint32_t namelen, uint32_t flash_ofs, int alloc_mode) |
| 216 | { |
| 217 | struct jffs2_raw_node_ref *raw; |
| 218 | struct jffs2_full_dirent *fd; |
| 219 | size_t retlen; |
| 220 | struct kvec vecs[2]; |
| 221 | int retried = 0; |
| 222 | int ret; |
| 223 | |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 224 | D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino), |
| 226 | je32_to_cpu(rd->name_crc))); |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 227 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | D1(if(je32_to_cpu(rd->hdr_crc) != crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)) { |
| 229 | printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dirent()\n"); |
| 230 | BUG(); |
| 231 | } |
| 232 | ); |
| 233 | |
| 234 | vecs[0].iov_base = rd; |
| 235 | vecs[0].iov_len = sizeof(*rd); |
| 236 | vecs[1].iov_base = (unsigned char *)name; |
| 237 | vecs[1].iov_len = namelen; |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 238 | |
Artem B. Bityutskiy | e0c8e42 | 2005-07-24 16:14:17 +0100 | [diff] [blame] | 239 | jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len); |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | raw = jffs2_alloc_raw_node_ref(); |
| 242 | |
| 243 | if (!raw) |
| 244 | return ERR_PTR(-ENOMEM); |
| 245 | |
| 246 | fd = jffs2_alloc_full_dirent(namelen+1); |
| 247 | if (!fd) { |
| 248 | jffs2_free_raw_node_ref(raw); |
| 249 | return ERR_PTR(-ENOMEM); |
| 250 | } |
| 251 | |
| 252 | fd->version = je32_to_cpu(rd->version); |
| 253 | fd->ino = je32_to_cpu(rd->ino); |
| 254 | fd->nhash = full_name_hash(name, strlen(name)); |
| 255 | fd->type = rd->type; |
| 256 | memcpy(fd->name, name, namelen); |
| 257 | fd->name[namelen]=0; |
| 258 | |
| 259 | retry: |
| 260 | fd->raw = raw; |
| 261 | |
| 262 | raw->flash_offset = flash_ofs; |
| 263 | raw->__totlen = PAD(sizeof(*rd)+namelen); |
| 264 | raw->next_phys = NULL; |
| 265 | |
Estelle Hammache | 9b88f47 | 2005-01-28 18:53:05 +0000 | [diff] [blame] | 266 | if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(rd->version) < f->highest_version)) { |
| 267 | BUG_ON(!retried); |
| 268 | D1(printk(KERN_DEBUG "jffs2_write_dirent : dirent_version %d, " |
| 269 | "highest version %d -> updating dirent\n", |
| 270 | je32_to_cpu(rd->version), f->highest_version)); |
| 271 | rd->version = cpu_to_je32(++f->highest_version); |
| 272 | fd->version = je32_to_cpu(rd->version); |
| 273 | rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); |
Estelle Hammache | e4803c3 | 2005-01-24 21:13:42 +0000 | [diff] [blame] | 274 | } |
| 275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen, |
| 277 | (alloc_mode==ALLOC_GC)?0:je32_to_cpu(rd->pino)); |
| 278 | if (ret || (retlen != sizeof(*rd) + namelen)) { |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 279 | printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | sizeof(*rd)+namelen, flash_ofs, ret, retlen); |
| 281 | /* Mark the space as dirtied */ |
| 282 | if (retlen) { |
| 283 | raw->next_in_ino = NULL; |
| 284 | raw->flash_offset |= REF_OBSOLETE; |
| 285 | jffs2_add_physical_node_ref(c, raw); |
| 286 | jffs2_mark_node_obsolete(c, raw); |
| 287 | } else { |
| 288 | printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", raw->flash_offset); |
| 289 | jffs2_free_raw_node_ref(raw); |
| 290 | } |
| 291 | if (!retried && (raw = jffs2_alloc_raw_node_ref())) { |
| 292 | /* Try to reallocate space and retry */ |
| 293 | uint32_t dummy; |
| 294 | struct jffs2_eraseblock *jeb = &c->blocks[flash_ofs / c->sector_size]; |
| 295 | |
| 296 | retried = 1; |
| 297 | |
| 298 | D1(printk(KERN_DEBUG "Retrying failed write.\n")); |
| 299 | |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 300 | jffs2_dbg_acct_sanity_check(c,jeb); |
| 301 | jffs2_dbg_acct_paranoia_check(c, jeb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | if (alloc_mode == ALLOC_GC) { |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 304 | ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &flash_ofs, |
| 305 | &dummy, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } else { |
| 307 | /* Locking pain */ |
| 308 | up(&f->sem); |
| 309 | jffs2_complete_reservation(c); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 310 | |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 311 | ret = jffs2_reserve_space(c, sizeof(*rd) + namelen, &flash_ofs, |
| 312 | &dummy, alloc_mode, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | down(&f->sem); |
| 314 | } |
| 315 | |
| 316 | if (!ret) { |
| 317 | D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs)); |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 318 | jffs2_dbg_acct_sanity_check(c,jeb); |
| 319 | jffs2_dbg_acct_paranoia_check(c, jeb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | goto retry; |
| 321 | } |
| 322 | D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret)); |
| 323 | jffs2_free_raw_node_ref(raw); |
| 324 | } |
| 325 | /* Release the full_dnode which is now useless, and return */ |
| 326 | jffs2_free_full_dirent(fd); |
| 327 | return ERR_PTR(ret?ret:-EIO); |
| 328 | } |
| 329 | /* Mark the space used */ |
| 330 | raw->flash_offset |= REF_PRISTINE; |
| 331 | jffs2_add_physical_node_ref(c, raw); |
| 332 | |
| 333 | spin_lock(&c->erase_completion_lock); |
| 334 | raw->next_in_ino = f->inocache->nodes; |
| 335 | f->inocache->nodes = raw; |
| 336 | spin_unlock(&c->erase_completion_lock); |
| 337 | |
| 338 | if (retried) { |
Artem B. Bityutskiy | 730554d | 2005-07-17 07:56:26 +0100 | [diff] [blame] | 339 | jffs2_dbg_acct_sanity_check(c,NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | return fd; |
| 343 | } |
| 344 | |
| 345 | /* The OS-specific code fills in the metadata in the jffs2_raw_inode for us, so that |
| 346 | we don't have to go digging in struct inode or its equivalent. It should set: |
| 347 | mode, uid, gid, (starting)isize, atime, ctime, mtime */ |
| 348 | int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f, |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 349 | struct jffs2_raw_inode *ri, unsigned char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | uint32_t offset, uint32_t writelen, uint32_t *retlen) |
| 351 | { |
| 352 | int ret = 0; |
| 353 | uint32_t writtenlen = 0; |
| 354 | |
| 355 | D1(printk(KERN_DEBUG "jffs2_write_inode_range(): Ino #%u, ofs 0x%x, len 0x%x\n", |
| 356 | f->inocache->ino, offset, writelen)); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | while(writelen) { |
| 359 | struct jffs2_full_dnode *fn; |
| 360 | unsigned char *comprbuf = NULL; |
| 361 | uint16_t comprtype = JFFS2_COMPR_NONE; |
| 362 | uint32_t phys_ofs, alloclen; |
| 363 | uint32_t datalen, cdatalen; |
| 364 | int retried = 0; |
| 365 | |
| 366 | retry: |
| 367 | D2(printk(KERN_DEBUG "jffs2_commit_write() loop: 0x%x to write to 0x%x\n", writelen, offset)); |
| 368 | |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 369 | ret = jffs2_reserve_space(c, sizeof(*ri) + JFFS2_MIN_DATA_LEN, &phys_ofs, |
| 370 | &alloclen, ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | if (ret) { |
| 372 | D1(printk(KERN_DEBUG "jffs2_reserve_space returned %d\n", ret)); |
| 373 | break; |
| 374 | } |
| 375 | down(&f->sem); |
| 376 | datalen = min_t(uint32_t, writelen, PAGE_CACHE_SIZE - (offset & (PAGE_CACHE_SIZE-1))); |
| 377 | cdatalen = min_t(uint32_t, alloclen - sizeof(*ri), datalen); |
| 378 | |
| 379 | comprtype = jffs2_compress(c, f, buf, &comprbuf, &datalen, &cdatalen); |
| 380 | |
| 381 | ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); |
| 382 | ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE); |
| 383 | ri->totlen = cpu_to_je32(sizeof(*ri) + cdatalen); |
| 384 | ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4)); |
| 385 | |
| 386 | ri->ino = cpu_to_je32(f->inocache->ino); |
| 387 | ri->version = cpu_to_je32(++f->highest_version); |
| 388 | ri->isize = cpu_to_je32(max(je32_to_cpu(ri->isize), offset + datalen)); |
| 389 | ri->offset = cpu_to_je32(offset); |
| 390 | ri->csize = cpu_to_je32(cdatalen); |
| 391 | ri->dsize = cpu_to_je32(datalen); |
| 392 | ri->compr = comprtype & 0xff; |
| 393 | ri->usercompr = (comprtype >> 8 ) & 0xff; |
| 394 | ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8)); |
| 395 | ri->data_crc = cpu_to_je32(crc32(0, comprbuf, cdatalen)); |
| 396 | |
| 397 | fn = jffs2_write_dnode(c, f, ri, comprbuf, cdatalen, phys_ofs, ALLOC_NORETRY); |
| 398 | |
| 399 | jffs2_free_comprbuf(comprbuf, buf); |
| 400 | |
| 401 | if (IS_ERR(fn)) { |
| 402 | ret = PTR_ERR(fn); |
| 403 | up(&f->sem); |
| 404 | jffs2_complete_reservation(c); |
| 405 | if (!retried) { |
| 406 | /* Write error to be retried */ |
| 407 | retried = 1; |
| 408 | D1(printk(KERN_DEBUG "Retrying node write in jffs2_write_inode_range()\n")); |
| 409 | goto retry; |
| 410 | } |
| 411 | break; |
| 412 | } |
| 413 | ret = jffs2_add_full_dnode_to_inode(c, f, fn); |
| 414 | if (f->metadata) { |
| 415 | jffs2_mark_node_obsolete(c, f->metadata->raw); |
| 416 | jffs2_free_full_dnode(f->metadata); |
| 417 | f->metadata = NULL; |
| 418 | } |
| 419 | if (ret) { |
| 420 | /* Eep */ |
| 421 | D1(printk(KERN_DEBUG "Eep. add_full_dnode_to_inode() failed in commit_write, returned %d\n", ret)); |
| 422 | jffs2_mark_node_obsolete(c, fn->raw); |
| 423 | jffs2_free_full_dnode(fn); |
| 424 | |
| 425 | up(&f->sem); |
| 426 | jffs2_complete_reservation(c); |
| 427 | break; |
| 428 | } |
| 429 | up(&f->sem); |
| 430 | jffs2_complete_reservation(c); |
| 431 | if (!datalen) { |
| 432 | printk(KERN_WARNING "Eep. We didn't actually write any data in jffs2_write_inode_range()\n"); |
| 433 | ret = -EIO; |
| 434 | break; |
| 435 | } |
| 436 | D1(printk(KERN_DEBUG "increasing writtenlen by %d\n", datalen)); |
| 437 | writtenlen += datalen; |
| 438 | offset += datalen; |
| 439 | writelen -= datalen; |
| 440 | buf += datalen; |
| 441 | } |
| 442 | *retlen = writtenlen; |
| 443 | return ret; |
| 444 | } |
| 445 | |
| 446 | int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const char *name, int namelen) |
| 447 | { |
| 448 | struct jffs2_raw_dirent *rd; |
| 449 | struct jffs2_full_dnode *fn; |
| 450 | struct jffs2_full_dirent *fd; |
| 451 | uint32_t alloclen, phys_ofs; |
| 452 | int ret; |
| 453 | |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 454 | /* Try to reserve enough space for both node and dirent. |
| 455 | * Just the node will do for now, though |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | */ |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 457 | ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL, |
| 458 | JFFS2_SUMMARY_INODE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | D1(printk(KERN_DEBUG "jffs2_do_create(): reserved 0x%x bytes\n", alloclen)); |
| 460 | if (ret) { |
| 461 | up(&f->sem); |
| 462 | return ret; |
| 463 | } |
| 464 | |
| 465 | ri->data_crc = cpu_to_je32(0); |
| 466 | ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8)); |
| 467 | |
| 468 | fn = jffs2_write_dnode(c, f, ri, NULL, 0, phys_ofs, ALLOC_NORMAL); |
| 469 | |
| 470 | D1(printk(KERN_DEBUG "jffs2_do_create created file with mode 0x%x\n", |
| 471 | jemode_to_cpu(ri->mode))); |
| 472 | |
| 473 | if (IS_ERR(fn)) { |
| 474 | D1(printk(KERN_DEBUG "jffs2_write_dnode() failed\n")); |
| 475 | /* Eeek. Wave bye bye */ |
| 476 | up(&f->sem); |
| 477 | jffs2_complete_reservation(c); |
| 478 | return PTR_ERR(fn); |
| 479 | } |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 480 | /* No data here. Only a metadata node, which will be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | obsoleted by the first data write |
| 482 | */ |
| 483 | f->metadata = fn; |
| 484 | |
| 485 | up(&f->sem); |
| 486 | jffs2_complete_reservation(c); |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 487 | ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, |
| 488 | ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | if (ret) { |
| 491 | /* Eep. */ |
| 492 | D1(printk(KERN_DEBUG "jffs2_reserve_space() for dirent failed\n")); |
| 493 | return ret; |
| 494 | } |
| 495 | |
| 496 | rd = jffs2_alloc_raw_dirent(); |
| 497 | if (!rd) { |
| 498 | /* Argh. Now we treat it like a normal delete */ |
| 499 | jffs2_complete_reservation(c); |
| 500 | return -ENOMEM; |
| 501 | } |
| 502 | |
| 503 | down(&dir_f->sem); |
| 504 | |
| 505 | rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); |
| 506 | rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT); |
| 507 | rd->totlen = cpu_to_je32(sizeof(*rd) + namelen); |
| 508 | rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)); |
| 509 | |
| 510 | rd->pino = cpu_to_je32(dir_f->inocache->ino); |
| 511 | rd->version = cpu_to_je32(++dir_f->highest_version); |
| 512 | rd->ino = ri->ino; |
| 513 | rd->mctime = ri->ctime; |
| 514 | rd->nsize = namelen; |
| 515 | rd->type = DT_REG; |
| 516 | rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); |
| 517 | rd->name_crc = cpu_to_je32(crc32(0, name, namelen)); |
| 518 | |
| 519 | fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_NORMAL); |
| 520 | |
| 521 | jffs2_free_raw_dirent(rd); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | if (IS_ERR(fd)) { |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 524 | /* dirent failed to write. Delete the inode normally |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | as if it were the final unlink() */ |
| 526 | jffs2_complete_reservation(c); |
| 527 | up(&dir_f->sem); |
| 528 | return PTR_ERR(fd); |
| 529 | } |
| 530 | |
| 531 | /* Link the fd into the inode's list, obsoleting an old |
| 532 | one if necessary. */ |
| 533 | jffs2_add_fd_to_list(c, fd, &dir_f->dents); |
| 534 | |
| 535 | jffs2_complete_reservation(c); |
| 536 | up(&dir_f->sem); |
| 537 | |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | |
| 542 | int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, |
Artem B. Bityutskiy | 3a69e0c | 2005-08-17 14:46:26 +0100 | [diff] [blame] | 543 | const char *name, int namelen, struct jffs2_inode_info *dead_f, |
| 544 | uint32_t time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | { |
| 546 | struct jffs2_raw_dirent *rd; |
| 547 | struct jffs2_full_dirent *fd; |
| 548 | uint32_t alloclen, phys_ofs; |
| 549 | int ret; |
| 550 | |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 551 | if (1 /* alternative branch needs testing */ || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | !jffs2_can_mark_obsolete(c)) { |
| 553 | /* We can't mark stuff obsolete on the medium. We need to write a deletion dirent */ |
| 554 | |
| 555 | rd = jffs2_alloc_raw_dirent(); |
| 556 | if (!rd) |
| 557 | return -ENOMEM; |
| 558 | |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 559 | ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, |
| 560 | ALLOC_DELETION, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | if (ret) { |
| 562 | jffs2_free_raw_dirent(rd); |
| 563 | return ret; |
| 564 | } |
| 565 | |
| 566 | down(&dir_f->sem); |
| 567 | |
| 568 | /* Build a deletion node */ |
| 569 | rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); |
| 570 | rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT); |
| 571 | rd->totlen = cpu_to_je32(sizeof(*rd) + namelen); |
| 572 | rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | rd->pino = cpu_to_je32(dir_f->inocache->ino); |
| 575 | rd->version = cpu_to_je32(++dir_f->highest_version); |
| 576 | rd->ino = cpu_to_je32(0); |
Artem B. Bityutskiy | 3a69e0c | 2005-08-17 14:46:26 +0100 | [diff] [blame] | 577 | rd->mctime = cpu_to_je32(time); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | rd->nsize = namelen; |
| 579 | rd->type = DT_UNKNOWN; |
| 580 | rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); |
| 581 | rd->name_crc = cpu_to_je32(crc32(0, name, namelen)); |
| 582 | |
| 583 | fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_DELETION); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 584 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | jffs2_free_raw_dirent(rd); |
| 586 | |
| 587 | if (IS_ERR(fd)) { |
| 588 | jffs2_complete_reservation(c); |
| 589 | up(&dir_f->sem); |
| 590 | return PTR_ERR(fd); |
| 591 | } |
| 592 | |
| 593 | /* File it. This will mark the old one obsolete. */ |
| 594 | jffs2_add_fd_to_list(c, fd, &dir_f->dents); |
| 595 | up(&dir_f->sem); |
| 596 | } else { |
| 597 | struct jffs2_full_dirent **prev = &dir_f->dents; |
| 598 | uint32_t nhash = full_name_hash(name, namelen); |
| 599 | |
| 600 | down(&dir_f->sem); |
| 601 | |
| 602 | while ((*prev) && (*prev)->nhash <= nhash) { |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 603 | if ((*prev)->nhash == nhash && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | !memcmp((*prev)->name, name, namelen) && |
| 605 | !(*prev)->name[namelen]) { |
| 606 | struct jffs2_full_dirent *this = *prev; |
| 607 | |
| 608 | D1(printk(KERN_DEBUG "Marking old dirent node (ino #%u) @%08x obsolete\n", |
| 609 | this->ino, ref_offset(this->raw))); |
| 610 | |
| 611 | *prev = this->next; |
| 612 | jffs2_mark_node_obsolete(c, (this->raw)); |
| 613 | jffs2_free_full_dirent(this); |
| 614 | break; |
| 615 | } |
| 616 | prev = &((*prev)->next); |
| 617 | } |
| 618 | up(&dir_f->sem); |
| 619 | } |
| 620 | |
| 621 | /* dead_f is NULL if this was a rename not a real unlink */ |
| 622 | /* Also catch the !f->inocache case, where there was a dirent |
| 623 | pointing to an inode which didn't exist. */ |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 624 | if (dead_f && dead_f->inocache) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
| 626 | down(&dead_f->sem); |
| 627 | |
Artem B. Bityuckiy | 32f1a95 | 2005-03-01 10:50:52 +0000 | [diff] [blame] | 628 | if (S_ISDIR(OFNI_EDONI_2SFFJ(dead_f)->i_mode)) { |
| 629 | while (dead_f->dents) { |
| 630 | /* There can be only deleted ones */ |
| 631 | fd = dead_f->dents; |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 632 | |
Artem B. Bityuckiy | 32f1a95 | 2005-03-01 10:50:52 +0000 | [diff] [blame] | 633 | dead_f->dents = fd->next; |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 634 | |
Artem B. Bityuckiy | 32f1a95 | 2005-03-01 10:50:52 +0000 | [diff] [blame] | 635 | if (fd->ino) { |
| 636 | printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n", |
| 637 | dead_f->inocache->ino, fd->name, fd->ino); |
| 638 | } else { |
| 639 | D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n", |
| 640 | fd->name, dead_f->inocache->ino)); |
| 641 | } |
| 642 | jffs2_mark_node_obsolete(c, fd->raw); |
| 643 | jffs2_free_full_dirent(fd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | } |
| 646 | |
| 647 | dead_f->inocache->nlink--; |
| 648 | /* NB: Caller must set inode nlink if appropriate */ |
| 649 | up(&dead_f->sem); |
| 650 | } |
| 651 | |
| 652 | jffs2_complete_reservation(c); |
| 653 | |
| 654 | return 0; |
| 655 | } |
| 656 | |
| 657 | |
Artem B. Bityutskiy | 3a69e0c | 2005-08-17 14:46:26 +0100 | [diff] [blame] | 658 | int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | { |
| 660 | struct jffs2_raw_dirent *rd; |
| 661 | struct jffs2_full_dirent *fd; |
| 662 | uint32_t alloclen, phys_ofs; |
| 663 | int ret; |
| 664 | |
| 665 | rd = jffs2_alloc_raw_dirent(); |
| 666 | if (!rd) |
| 667 | return -ENOMEM; |
| 668 | |
Ferenc Havasi | e631ddb | 2005-09-07 09:35:26 +0100 | [diff] [blame] | 669 | ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, |
| 670 | ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | if (ret) { |
| 672 | jffs2_free_raw_dirent(rd); |
| 673 | return ret; |
| 674 | } |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | down(&dir_f->sem); |
| 677 | |
| 678 | /* Build a deletion node */ |
| 679 | rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); |
| 680 | rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT); |
| 681 | rd->totlen = cpu_to_je32(sizeof(*rd) + namelen); |
| 682 | rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)); |
| 683 | |
| 684 | rd->pino = cpu_to_je32(dir_f->inocache->ino); |
| 685 | rd->version = cpu_to_je32(++dir_f->highest_version); |
| 686 | rd->ino = cpu_to_je32(ino); |
Artem B. Bityutskiy | 3a69e0c | 2005-08-17 14:46:26 +0100 | [diff] [blame] | 687 | rd->mctime = cpu_to_je32(time); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | rd->nsize = namelen; |
| 689 | |
| 690 | rd->type = type; |
| 691 | |
| 692 | rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); |
| 693 | rd->name_crc = cpu_to_je32(crc32(0, name, namelen)); |
| 694 | |
| 695 | fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_NORMAL); |
Thomas Gleixner | 182ec4e | 2005-11-07 11:16:07 +0000 | [diff] [blame] | 696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | jffs2_free_raw_dirent(rd); |
| 698 | |
| 699 | if (IS_ERR(fd)) { |
| 700 | jffs2_complete_reservation(c); |
| 701 | up(&dir_f->sem); |
| 702 | return PTR_ERR(fd); |
| 703 | } |
| 704 | |
| 705 | /* File it. This will mark the old one obsolete. */ |
| 706 | jffs2_add_fd_to_list(c, fd, &dir_f->dents); |
| 707 | |
| 708 | jffs2_complete_reservation(c); |
| 709 | up(&dir_f->sem); |
| 710 | |
| 711 | return 0; |
| 712 | } |