1e631ddbaSFerenc Havasi /* 2e631ddbaSFerenc Havasi * JFFS2 -- Journalling Flash File System, Version 2. 3e631ddbaSFerenc Havasi * 4e631ddbaSFerenc Havasi * Copyright (C) 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>, 5e631ddbaSFerenc Havasi * Zoltan Sogor <weth@inf.u-szeged.hu>, 6e631ddbaSFerenc Havasi * Patrik Kluba <pajko@halom.u-szeged.hu>, 7e631ddbaSFerenc Havasi * University of Szeged, Hungary 8e631ddbaSFerenc Havasi * 9e631ddbaSFerenc Havasi * For licensing information, see the file 'LICENCE' in this directory. 10e631ddbaSFerenc Havasi * 11733802d9SArtem B. Bityutskiy * $Id: summary.c,v 1.3 2005/09/21 14:43:07 dedekind Exp $ 12e631ddbaSFerenc Havasi * 13e631ddbaSFerenc Havasi */ 14e631ddbaSFerenc Havasi 15e631ddbaSFerenc Havasi #include <linux/kernel.h> 16e631ddbaSFerenc Havasi #include <linux/sched.h> 17e631ddbaSFerenc Havasi #include <linux/slab.h> 18e631ddbaSFerenc Havasi #include <linux/mtd/mtd.h> 19e631ddbaSFerenc Havasi #include <linux/pagemap.h> 20e631ddbaSFerenc Havasi #include <linux/crc32.h> 21e631ddbaSFerenc Havasi #include <linux/compiler.h> 22e631ddbaSFerenc Havasi #include <linux/vmalloc.h> 23e631ddbaSFerenc Havasi #include "nodelist.h" 24e631ddbaSFerenc Havasi #include "debug.h" 25e631ddbaSFerenc Havasi 26e631ddbaSFerenc Havasi int jffs2_sum_init(struct jffs2_sb_info *c) 27e631ddbaSFerenc Havasi { 28e631ddbaSFerenc Havasi c->summary = kmalloc(sizeof(struct jffs2_summary), GFP_KERNEL); 29e631ddbaSFerenc Havasi 30e631ddbaSFerenc Havasi if (!c->summary) { 31e631ddbaSFerenc Havasi JFFS2_WARNING("Can't allocate memory for summary information!\n"); 32e631ddbaSFerenc Havasi return -ENOMEM; 33e631ddbaSFerenc Havasi } 34e631ddbaSFerenc Havasi 35e631ddbaSFerenc Havasi memset(c->summary, 0, sizeof(struct jffs2_summary)); 36e631ddbaSFerenc Havasi 37e631ddbaSFerenc Havasi c->summary->sum_buf = vmalloc(c->sector_size); 38e631ddbaSFerenc Havasi 39e631ddbaSFerenc Havasi if (!c->summary->sum_buf) { 40e631ddbaSFerenc Havasi JFFS2_WARNING("Can't allocate buffer for writing out summary information!\n"); 41733802d9SArtem B. Bityutskiy kfree(c->summary); 42e631ddbaSFerenc Havasi return -ENOMEM; 43e631ddbaSFerenc Havasi } 44e631ddbaSFerenc Havasi 45733802d9SArtem B. Bityutskiy dbg_summary("returned succesfully\n"); 46e631ddbaSFerenc Havasi 47e631ddbaSFerenc Havasi return 0; 48e631ddbaSFerenc Havasi } 49e631ddbaSFerenc Havasi 50e631ddbaSFerenc Havasi void jffs2_sum_exit(struct jffs2_sb_info *c) 51e631ddbaSFerenc Havasi { 52733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 53e631ddbaSFerenc Havasi 54e631ddbaSFerenc Havasi jffs2_sum_disable_collecting(c->summary); 55e631ddbaSFerenc Havasi 56e631ddbaSFerenc Havasi vfree(c->summary->sum_buf); 57e631ddbaSFerenc Havasi c->summary->sum_buf = NULL; 58e631ddbaSFerenc Havasi 59e631ddbaSFerenc Havasi kfree(c->summary); 60e631ddbaSFerenc Havasi c->summary = NULL; 61e631ddbaSFerenc Havasi } 62e631ddbaSFerenc Havasi 63e631ddbaSFerenc Havasi static int jffs2_sum_add_mem(struct jffs2_summary *s, union jffs2_sum_mem *item) 64e631ddbaSFerenc Havasi { 65e631ddbaSFerenc Havasi if (!s->sum_list_head) 66e631ddbaSFerenc Havasi s->sum_list_head = (union jffs2_sum_mem *) item; 67e631ddbaSFerenc Havasi if (s->sum_list_tail) 68e631ddbaSFerenc Havasi s->sum_list_tail->u.next = (union jffs2_sum_mem *) item; 69e631ddbaSFerenc Havasi s->sum_list_tail = (union jffs2_sum_mem *) item; 70e631ddbaSFerenc Havasi 71e631ddbaSFerenc Havasi switch (je16_to_cpu(item->u.nodetype)) { 72e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: 73e631ddbaSFerenc Havasi s->sum_size += JFFS2_SUMMARY_INODE_SIZE; 74e631ddbaSFerenc Havasi s->sum_num++; 75733802d9SArtem B. Bityutskiy dbg_summary("inode (%u) added to summary\n", 76e631ddbaSFerenc Havasi je32_to_cpu(item->i.inode)); 77e631ddbaSFerenc Havasi break; 78e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: 79e631ddbaSFerenc Havasi s->sum_size += JFFS2_SUMMARY_DIRENT_SIZE(item->d.nsize); 80e631ddbaSFerenc Havasi s->sum_num++; 81733802d9SArtem B. Bityutskiy dbg_summary("dirent (%u) added to summary\n", 82e631ddbaSFerenc Havasi je32_to_cpu(item->d.ino)); 83e631ddbaSFerenc Havasi break; 84e631ddbaSFerenc Havasi default: 85e631ddbaSFerenc Havasi JFFS2_WARNING("UNKNOWN node type %u\n", 86e631ddbaSFerenc Havasi je16_to_cpu(item->u.nodetype)); 87e631ddbaSFerenc Havasi return 1; 88e631ddbaSFerenc Havasi } 89e631ddbaSFerenc Havasi return 0; 90e631ddbaSFerenc Havasi } 91e631ddbaSFerenc Havasi 92e631ddbaSFerenc Havasi 93e631ddbaSFerenc Havasi /* The following 3 functions are called from scan.c to collect summary info for not closed jeb */ 94e631ddbaSFerenc Havasi 95e631ddbaSFerenc Havasi int jffs2_sum_add_padding_mem(struct jffs2_summary *s, uint32_t size) 96e631ddbaSFerenc Havasi { 97733802d9SArtem B. Bityutskiy dbg_summary("called with %u\n", size); 98e631ddbaSFerenc Havasi s->sum_padded += size; 99e631ddbaSFerenc Havasi return 0; 100e631ddbaSFerenc Havasi } 101e631ddbaSFerenc Havasi 102e631ddbaSFerenc Havasi int jffs2_sum_add_inode_mem(struct jffs2_summary *s, struct jffs2_raw_inode *ri, 103e631ddbaSFerenc Havasi uint32_t ofs) 104e631ddbaSFerenc Havasi { 105e631ddbaSFerenc Havasi struct jffs2_sum_inode_mem *temp = kmalloc(sizeof(struct jffs2_sum_inode_mem), GFP_KERNEL); 106e631ddbaSFerenc Havasi 107e631ddbaSFerenc Havasi if (!temp) 108e631ddbaSFerenc Havasi return -ENOMEM; 109e631ddbaSFerenc Havasi 110e631ddbaSFerenc Havasi temp->nodetype = ri->nodetype; 111e631ddbaSFerenc Havasi temp->inode = ri->ino; 112e631ddbaSFerenc Havasi temp->version = ri->version; 113e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); /* relative offset from the begining of the jeb */ 114e631ddbaSFerenc Havasi temp->totlen = ri->totlen; 115e631ddbaSFerenc Havasi temp->next = NULL; 116e631ddbaSFerenc Havasi 117e631ddbaSFerenc Havasi return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp); 118e631ddbaSFerenc Havasi } 119e631ddbaSFerenc Havasi 120e631ddbaSFerenc Havasi int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *rd, 121e631ddbaSFerenc Havasi uint32_t ofs) 122e631ddbaSFerenc Havasi { 123e631ddbaSFerenc Havasi struct jffs2_sum_dirent_mem *temp = 124e631ddbaSFerenc Havasi kmalloc(sizeof(struct jffs2_sum_dirent_mem) + rd->nsize, GFP_KERNEL); 125e631ddbaSFerenc Havasi 126e631ddbaSFerenc Havasi if (!temp) 127e631ddbaSFerenc Havasi return -ENOMEM; 128e631ddbaSFerenc Havasi 129e631ddbaSFerenc Havasi temp->nodetype = rd->nodetype; 130e631ddbaSFerenc Havasi temp->totlen = rd->totlen; 131e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); /* relative from the begining of the jeb */ 132e631ddbaSFerenc Havasi temp->pino = rd->pino; 133e631ddbaSFerenc Havasi temp->version = rd->version; 134e631ddbaSFerenc Havasi temp->ino = rd->ino; 135e631ddbaSFerenc Havasi temp->nsize = rd->nsize; 136e631ddbaSFerenc Havasi temp->type = rd->type; 137e631ddbaSFerenc Havasi temp->next = NULL; 138e631ddbaSFerenc Havasi 139e631ddbaSFerenc Havasi memcpy(temp->name, rd->name, rd->nsize); 140e631ddbaSFerenc Havasi 141e631ddbaSFerenc Havasi return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp); 142e631ddbaSFerenc Havasi } 143e631ddbaSFerenc Havasi 144e631ddbaSFerenc Havasi /* Cleanup every collected summary information */ 145e631ddbaSFerenc Havasi 146e631ddbaSFerenc Havasi static void jffs2_sum_clean_collected(struct jffs2_summary *s) 147e631ddbaSFerenc Havasi { 148e631ddbaSFerenc Havasi union jffs2_sum_mem *temp; 149e631ddbaSFerenc Havasi 150e631ddbaSFerenc Havasi if (!s->sum_list_head) { 151733802d9SArtem B. Bityutskiy dbg_summary("already empty\n"); 152e631ddbaSFerenc Havasi } 153e631ddbaSFerenc Havasi while (s->sum_list_head) { 154e631ddbaSFerenc Havasi temp = s->sum_list_head; 155e631ddbaSFerenc Havasi s->sum_list_head = s->sum_list_head->u.next; 156e631ddbaSFerenc Havasi kfree(temp); 157e631ddbaSFerenc Havasi } 158e631ddbaSFerenc Havasi s->sum_list_tail = NULL; 159e631ddbaSFerenc Havasi s->sum_padded = 0; 160e631ddbaSFerenc Havasi s->sum_num = 0; 161e631ddbaSFerenc Havasi } 162e631ddbaSFerenc Havasi 163e631ddbaSFerenc Havasi void jffs2_sum_reset_collected(struct jffs2_summary *s) 164e631ddbaSFerenc Havasi { 165733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 166e631ddbaSFerenc Havasi jffs2_sum_clean_collected(s); 167e631ddbaSFerenc Havasi s->sum_size = 0; 168e631ddbaSFerenc Havasi } 169e631ddbaSFerenc Havasi 170e631ddbaSFerenc Havasi void jffs2_sum_disable_collecting(struct jffs2_summary *s) 171e631ddbaSFerenc Havasi { 172733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 173e631ddbaSFerenc Havasi jffs2_sum_clean_collected(s); 174e631ddbaSFerenc Havasi s->sum_size = JFFS2_SUMMARY_NOSUM_SIZE; 175e631ddbaSFerenc Havasi } 176e631ddbaSFerenc Havasi 177e631ddbaSFerenc Havasi int jffs2_sum_is_disabled(struct jffs2_summary *s) 178e631ddbaSFerenc Havasi { 179e631ddbaSFerenc Havasi return (s->sum_size == JFFS2_SUMMARY_NOSUM_SIZE); 180e631ddbaSFerenc Havasi } 181e631ddbaSFerenc Havasi 182e631ddbaSFerenc Havasi /* Move the collected summary information into sb (called from scan.c) */ 183e631ddbaSFerenc Havasi 184e631ddbaSFerenc Havasi void jffs2_sum_move_collected(struct jffs2_sb_info *c, struct jffs2_summary *s) 185e631ddbaSFerenc Havasi { 186733802d9SArtem B. Bityutskiy dbg_summary("oldsize=0x%x oldnum=%u => newsize=0x%x newnum=%u\n", 187e631ddbaSFerenc Havasi c->summary->sum_size, c->summary->sum_num, 188e631ddbaSFerenc Havasi s->sum_size, s->sum_num); 189e631ddbaSFerenc Havasi 190e631ddbaSFerenc Havasi c->summary->sum_size = s->sum_size; 191e631ddbaSFerenc Havasi c->summary->sum_num = s->sum_num; 192e631ddbaSFerenc Havasi c->summary->sum_padded = s->sum_padded; 193e631ddbaSFerenc Havasi c->summary->sum_list_head = s->sum_list_head; 194e631ddbaSFerenc Havasi c->summary->sum_list_tail = s->sum_list_tail; 195e631ddbaSFerenc Havasi 196e631ddbaSFerenc Havasi s->sum_list_head = s->sum_list_tail = NULL; 197e631ddbaSFerenc Havasi } 198e631ddbaSFerenc Havasi 199e631ddbaSFerenc Havasi /* Called from wbuf.c to collect writed node info */ 200e631ddbaSFerenc Havasi 201e631ddbaSFerenc Havasi int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs, 202e631ddbaSFerenc Havasi unsigned long count, uint32_t ofs) 203e631ddbaSFerenc Havasi { 204e631ddbaSFerenc Havasi union jffs2_node_union *node; 205e631ddbaSFerenc Havasi struct jffs2_eraseblock *jeb; 206e631ddbaSFerenc Havasi 207e631ddbaSFerenc Havasi node = invecs[0].iov_base; 208e631ddbaSFerenc Havasi jeb = &c->blocks[ofs / c->sector_size]; 209e631ddbaSFerenc Havasi ofs -= jeb->offset; 210e631ddbaSFerenc Havasi 211e631ddbaSFerenc Havasi switch (je16_to_cpu(node->u.nodetype)) { 212e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 213e631ddbaSFerenc Havasi struct jffs2_sum_inode_mem *temp = 214e631ddbaSFerenc Havasi kmalloc(sizeof(struct jffs2_sum_inode_mem), GFP_KERNEL); 215e631ddbaSFerenc Havasi 216e631ddbaSFerenc Havasi if (!temp) 217e631ddbaSFerenc Havasi goto no_mem; 218e631ddbaSFerenc Havasi 219e631ddbaSFerenc Havasi temp->nodetype = node->i.nodetype; 220e631ddbaSFerenc Havasi temp->inode = node->i.ino; 221e631ddbaSFerenc Havasi temp->version = node->i.version; 222e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); 223e631ddbaSFerenc Havasi temp->totlen = node->i.totlen; 224e631ddbaSFerenc Havasi temp->next = NULL; 225e631ddbaSFerenc Havasi 226e631ddbaSFerenc Havasi return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp); 227e631ddbaSFerenc Havasi } 228e631ddbaSFerenc Havasi 229e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 230e631ddbaSFerenc Havasi struct jffs2_sum_dirent_mem *temp = 231e631ddbaSFerenc Havasi kmalloc(sizeof(struct jffs2_sum_dirent_mem) + node->d.nsize, GFP_KERNEL); 232e631ddbaSFerenc Havasi 233e631ddbaSFerenc Havasi if (!temp) 234e631ddbaSFerenc Havasi goto no_mem; 235e631ddbaSFerenc Havasi 236e631ddbaSFerenc Havasi temp->nodetype = node->d.nodetype; 237e631ddbaSFerenc Havasi temp->totlen = node->d.totlen; 238e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); 239e631ddbaSFerenc Havasi temp->pino = node->d.pino; 240e631ddbaSFerenc Havasi temp->version = node->d.version; 241e631ddbaSFerenc Havasi temp->ino = node->d.ino; 242e631ddbaSFerenc Havasi temp->nsize = node->d.nsize; 243e631ddbaSFerenc Havasi temp->type = node->d.type; 244e631ddbaSFerenc Havasi temp->next = NULL; 245e631ddbaSFerenc Havasi 246e631ddbaSFerenc Havasi switch (count) { 247e631ddbaSFerenc Havasi case 1: 248e631ddbaSFerenc Havasi memcpy(temp->name,node->d.name,node->d.nsize); 249e631ddbaSFerenc Havasi break; 250e631ddbaSFerenc Havasi 251e631ddbaSFerenc Havasi case 2: 252e631ddbaSFerenc Havasi memcpy(temp->name,invecs[1].iov_base,node->d.nsize); 253e631ddbaSFerenc Havasi break; 254e631ddbaSFerenc Havasi 255e631ddbaSFerenc Havasi default: 256e631ddbaSFerenc Havasi BUG(); /* impossible count value */ 257e631ddbaSFerenc Havasi break; 258e631ddbaSFerenc Havasi } 259e631ddbaSFerenc Havasi 260e631ddbaSFerenc Havasi return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp); 261e631ddbaSFerenc Havasi } 262e631ddbaSFerenc Havasi 263e631ddbaSFerenc Havasi case JFFS2_NODETYPE_PADDING: 264733802d9SArtem B. Bityutskiy dbg_summary("node PADDING\n"); 265e631ddbaSFerenc Havasi c->summary->sum_padded += je32_to_cpu(node->u.totlen); 266e631ddbaSFerenc Havasi break; 267e631ddbaSFerenc Havasi 268e631ddbaSFerenc Havasi case JFFS2_NODETYPE_CLEANMARKER: 269733802d9SArtem B. Bityutskiy dbg_summary("node CLEANMARKER\n"); 270e631ddbaSFerenc Havasi break; 271e631ddbaSFerenc Havasi 272e631ddbaSFerenc Havasi case JFFS2_NODETYPE_SUMMARY: 273733802d9SArtem B. Bityutskiy dbg_summary("node SUMMARY\n"); 274e631ddbaSFerenc Havasi break; 275e631ddbaSFerenc Havasi 276e631ddbaSFerenc Havasi default: 277e631ddbaSFerenc Havasi /* If you implement a new node type you should also implement 278e631ddbaSFerenc Havasi summary support for it or disable summary. 279e631ddbaSFerenc Havasi */ 280e631ddbaSFerenc Havasi BUG(); 281e631ddbaSFerenc Havasi break; 282e631ddbaSFerenc Havasi } 283e631ddbaSFerenc Havasi 284e631ddbaSFerenc Havasi return 0; 285e631ddbaSFerenc Havasi 286e631ddbaSFerenc Havasi no_mem: 287e631ddbaSFerenc Havasi JFFS2_WARNING("MEMORY ALLOCATION ERROR!"); 288e631ddbaSFerenc Havasi return -ENOMEM; 289e631ddbaSFerenc Havasi } 290e631ddbaSFerenc Havasi 291e631ddbaSFerenc Havasi 292e631ddbaSFerenc Havasi /* Process the stored summary information - helper function for jffs2_sum_scan_sumnode() */ 293e631ddbaSFerenc Havasi 294e631ddbaSFerenc Havasi static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 295e631ddbaSFerenc Havasi struct jffs2_summary_node *summary, uint32_t *pseudo_random) 296e631ddbaSFerenc Havasi { 297e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *raw; 298e631ddbaSFerenc Havasi struct jffs2_inode_cache *ic; 299e631ddbaSFerenc Havasi struct jffs2_full_dirent *fd; 300e631ddbaSFerenc Havasi void *sp; 301e631ddbaSFerenc Havasi int i, ino; 302e631ddbaSFerenc Havasi 303e631ddbaSFerenc Havasi sp = summary->sum; 304e631ddbaSFerenc Havasi 305e631ddbaSFerenc Havasi for (i=0; i<je32_to_cpu(summary->sum_num); i++) { 306733802d9SArtem B. Bityutskiy dbg_summary("processing summary index %d\n", i); 307e631ddbaSFerenc Havasi 308e631ddbaSFerenc Havasi switch (je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype)) { 309e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 310e631ddbaSFerenc Havasi struct jffs2_sum_inode_flash *spi; 311e631ddbaSFerenc Havasi spi = sp; 312e631ddbaSFerenc Havasi 313e631ddbaSFerenc Havasi ino = je32_to_cpu(spi->inode); 314e631ddbaSFerenc Havasi 315733802d9SArtem B. Bityutskiy dbg_summary("Inode at 0x%08x\n", 316e631ddbaSFerenc Havasi jeb->offset + je32_to_cpu(spi->offset)); 317e631ddbaSFerenc Havasi 318e631ddbaSFerenc Havasi raw = jffs2_alloc_raw_node_ref(); 319e631ddbaSFerenc Havasi if (!raw) { 320e631ddbaSFerenc Havasi JFFS2_NOTICE("allocation of node reference failed\n"); 321e631ddbaSFerenc Havasi kfree(summary); 322e631ddbaSFerenc Havasi return -ENOMEM; 323e631ddbaSFerenc Havasi } 324e631ddbaSFerenc Havasi 325e631ddbaSFerenc Havasi ic = jffs2_scan_make_ino_cache(c, ino); 326e631ddbaSFerenc Havasi if (!ic) { 327e631ddbaSFerenc Havasi JFFS2_NOTICE("scan_make_ino_cache failed\n"); 328e631ddbaSFerenc Havasi jffs2_free_raw_node_ref(raw); 329e631ddbaSFerenc Havasi kfree(summary); 330e631ddbaSFerenc Havasi return -ENOMEM; 331e631ddbaSFerenc Havasi } 332e631ddbaSFerenc Havasi 333e631ddbaSFerenc Havasi raw->flash_offset = (jeb->offset + je32_to_cpu(spi->offset)) | REF_UNCHECKED; 334e631ddbaSFerenc Havasi raw->__totlen = PAD(je32_to_cpu(spi->totlen)); 335e631ddbaSFerenc Havasi raw->next_phys = NULL; 336e631ddbaSFerenc Havasi raw->next_in_ino = ic->nodes; 337e631ddbaSFerenc Havasi 338e631ddbaSFerenc Havasi ic->nodes = raw; 339e631ddbaSFerenc Havasi if (!jeb->first_node) 340e631ddbaSFerenc Havasi jeb->first_node = raw; 341e631ddbaSFerenc Havasi if (jeb->last_node) 342e631ddbaSFerenc Havasi jeb->last_node->next_phys = raw; 343e631ddbaSFerenc Havasi jeb->last_node = raw; 344e631ddbaSFerenc Havasi *pseudo_random += je32_to_cpu(spi->version); 345e631ddbaSFerenc Havasi 346e631ddbaSFerenc Havasi UNCHECKED_SPACE(PAD(je32_to_cpu(spi->totlen))); 347e631ddbaSFerenc Havasi 348e631ddbaSFerenc Havasi sp += JFFS2_SUMMARY_INODE_SIZE; 349e631ddbaSFerenc Havasi 350e631ddbaSFerenc Havasi break; 351e631ddbaSFerenc Havasi } 352e631ddbaSFerenc Havasi 353e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 354e631ddbaSFerenc Havasi struct jffs2_sum_dirent_flash *spd; 355e631ddbaSFerenc Havasi spd = sp; 356e631ddbaSFerenc Havasi 357733802d9SArtem B. Bityutskiy dbg_summary("Dirent at 0x%08x\n", 358e631ddbaSFerenc Havasi jeb->offset + je32_to_cpu(spd->offset)); 359e631ddbaSFerenc Havasi 360e631ddbaSFerenc Havasi fd = jffs2_alloc_full_dirent(spd->nsize+1); 361e631ddbaSFerenc Havasi if (!fd) { 362e631ddbaSFerenc Havasi kfree(summary); 363e631ddbaSFerenc Havasi return -ENOMEM; 364e631ddbaSFerenc Havasi } 365e631ddbaSFerenc Havasi 366e631ddbaSFerenc Havasi memcpy(&fd->name, spd->name, spd->nsize); 367e631ddbaSFerenc Havasi fd->name[spd->nsize] = 0; 368e631ddbaSFerenc Havasi 369e631ddbaSFerenc Havasi raw = jffs2_alloc_raw_node_ref(); 370e631ddbaSFerenc Havasi if (!raw) { 371e631ddbaSFerenc Havasi jffs2_free_full_dirent(fd); 372e631ddbaSFerenc Havasi JFFS2_NOTICE("allocation of node reference failed\n"); 373e631ddbaSFerenc Havasi kfree(summary); 374e631ddbaSFerenc Havasi return -ENOMEM; 375e631ddbaSFerenc Havasi } 376e631ddbaSFerenc Havasi 377e631ddbaSFerenc Havasi ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(spd->pino)); 378e631ddbaSFerenc Havasi if (!ic) { 379e631ddbaSFerenc Havasi jffs2_free_full_dirent(fd); 380e631ddbaSFerenc Havasi jffs2_free_raw_node_ref(raw); 381e631ddbaSFerenc Havasi kfree(summary); 382e631ddbaSFerenc Havasi return -ENOMEM; 383e631ddbaSFerenc Havasi } 384e631ddbaSFerenc Havasi 385e631ddbaSFerenc Havasi raw->__totlen = PAD(je32_to_cpu(spd->totlen)); 386e631ddbaSFerenc Havasi raw->flash_offset = (jeb->offset + je32_to_cpu(spd->offset)) | REF_PRISTINE; 387e631ddbaSFerenc Havasi raw->next_phys = NULL; 388e631ddbaSFerenc Havasi raw->next_in_ino = ic->nodes; 389e631ddbaSFerenc Havasi ic->nodes = raw; 390e631ddbaSFerenc Havasi if (!jeb->first_node) 391e631ddbaSFerenc Havasi jeb->first_node = raw; 392e631ddbaSFerenc Havasi if (jeb->last_node) 393e631ddbaSFerenc Havasi jeb->last_node->next_phys = raw; 394e631ddbaSFerenc Havasi jeb->last_node = raw; 395e631ddbaSFerenc Havasi 396e631ddbaSFerenc Havasi fd->raw = raw; 397e631ddbaSFerenc Havasi fd->next = NULL; 398e631ddbaSFerenc Havasi fd->version = je32_to_cpu(spd->version); 399e631ddbaSFerenc Havasi fd->ino = je32_to_cpu(spd->ino); 400e631ddbaSFerenc Havasi fd->nhash = full_name_hash(fd->name, spd->nsize); 401e631ddbaSFerenc Havasi fd->type = spd->type; 402e631ddbaSFerenc Havasi USED_SPACE(PAD(je32_to_cpu(spd->totlen))); 403e631ddbaSFerenc Havasi jffs2_add_fd_to_list(c, fd, &ic->scan_dents); 404e631ddbaSFerenc Havasi 405e631ddbaSFerenc Havasi *pseudo_random += je32_to_cpu(spd->version); 406e631ddbaSFerenc Havasi 407e631ddbaSFerenc Havasi sp += JFFS2_SUMMARY_DIRENT_SIZE(spd->nsize); 408e631ddbaSFerenc Havasi 409e631ddbaSFerenc Havasi break; 410e631ddbaSFerenc Havasi } 411e631ddbaSFerenc Havasi 412e631ddbaSFerenc Havasi default : { 413e631ddbaSFerenc Havasi JFFS2_WARNING("Unsupported node type found in summary! Exiting..."); 414e631ddbaSFerenc Havasi kfree(summary); 415e631ddbaSFerenc Havasi return -EIO; 416e631ddbaSFerenc Havasi } 417e631ddbaSFerenc Havasi } 418e631ddbaSFerenc Havasi } 419e631ddbaSFerenc Havasi 420e631ddbaSFerenc Havasi kfree(summary); 421e631ddbaSFerenc Havasi return 0; 422e631ddbaSFerenc Havasi } 423e631ddbaSFerenc Havasi 424e631ddbaSFerenc Havasi /* Process the summary node - called from jffs2_scan_eraseblock() */ 425e631ddbaSFerenc Havasi 426e631ddbaSFerenc Havasi int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 427e631ddbaSFerenc Havasi uint32_t ofs, uint32_t *pseudo_random) 428e631ddbaSFerenc Havasi { 429e631ddbaSFerenc Havasi struct jffs2_unknown_node crcnode; 430e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *cache_ref; 431e631ddbaSFerenc Havasi struct jffs2_summary_node *summary; 432e631ddbaSFerenc Havasi int ret, sumsize; 433e631ddbaSFerenc Havasi uint32_t crc; 434e631ddbaSFerenc Havasi 435e631ddbaSFerenc Havasi sumsize = c->sector_size - ofs; 436e631ddbaSFerenc Havasi ofs += jeb->offset; 437e631ddbaSFerenc Havasi 438733802d9SArtem B. Bityutskiy dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n", 439e631ddbaSFerenc Havasi jeb->offset, ofs, sumsize); 440e631ddbaSFerenc Havasi 441e631ddbaSFerenc Havasi summary = kmalloc(sumsize, GFP_KERNEL); 442e631ddbaSFerenc Havasi 443e631ddbaSFerenc Havasi if (!summary) { 444e631ddbaSFerenc Havasi return -ENOMEM; 445e631ddbaSFerenc Havasi } 446e631ddbaSFerenc Havasi 447e631ddbaSFerenc Havasi ret = jffs2_fill_scan_buf(c, (unsigned char *)summary, ofs, sumsize); 448e631ddbaSFerenc Havasi 449e631ddbaSFerenc Havasi if (ret) { 450e631ddbaSFerenc Havasi kfree(summary); 451e631ddbaSFerenc Havasi return ret; 452e631ddbaSFerenc Havasi } 453e631ddbaSFerenc Havasi 454e631ddbaSFerenc Havasi /* OK, now check for node validity and CRC */ 455e631ddbaSFerenc Havasi crcnode.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 456e631ddbaSFerenc Havasi crcnode.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY); 457e631ddbaSFerenc Havasi crcnode.totlen = summary->totlen; 458e631ddbaSFerenc Havasi crc = crc32(0, &crcnode, sizeof(crcnode)-4); 459e631ddbaSFerenc Havasi 460e631ddbaSFerenc Havasi if (je32_to_cpu(summary->hdr_crc) != crc) { 461733802d9SArtem B. Bityutskiy dbg_summary("Summary node header is corrupt (bad CRC or " 462e631ddbaSFerenc Havasi "no summary at all)\n"); 463e631ddbaSFerenc Havasi goto crc_err; 464e631ddbaSFerenc Havasi } 465e631ddbaSFerenc Havasi 466e631ddbaSFerenc Havasi if (je32_to_cpu(summary->totlen) != sumsize) { 467733802d9SArtem B. Bityutskiy dbg_summary("Summary node is corrupt (wrong erasesize?)\n"); 468e631ddbaSFerenc Havasi goto crc_err; 469e631ddbaSFerenc Havasi } 470e631ddbaSFerenc Havasi 471e631ddbaSFerenc Havasi crc = crc32(0, summary, sizeof(struct jffs2_summary_node)-8); 472e631ddbaSFerenc Havasi 473e631ddbaSFerenc Havasi if (je32_to_cpu(summary->node_crc) != crc) { 474733802d9SArtem B. Bityutskiy dbg_summary("Summary node is corrupt (bad CRC)\n"); 475e631ddbaSFerenc Havasi goto crc_err; 476e631ddbaSFerenc Havasi } 477e631ddbaSFerenc Havasi 478e631ddbaSFerenc Havasi crc = crc32(0, summary->sum, sumsize - sizeof(struct jffs2_summary_node)); 479e631ddbaSFerenc Havasi 480e631ddbaSFerenc Havasi if (je32_to_cpu(summary->sum_crc) != crc) { 481733802d9SArtem B. Bityutskiy dbg_summary("Summary node data is corrupt (bad CRC)\n"); 482e631ddbaSFerenc Havasi goto crc_err; 483e631ddbaSFerenc Havasi } 484e631ddbaSFerenc Havasi 485e631ddbaSFerenc Havasi if ( je32_to_cpu(summary->cln_mkr) ) { 486e631ddbaSFerenc Havasi 487733802d9SArtem B. Bityutskiy dbg_summary("Summary : CLEANMARKER node \n"); 488e631ddbaSFerenc Havasi 489e631ddbaSFerenc Havasi if (je32_to_cpu(summary->cln_mkr) != c->cleanmarker_size) { 490733802d9SArtem B. Bityutskiy dbg_summary("CLEANMARKER node has totlen 0x%x != normal 0x%x\n", 491e631ddbaSFerenc Havasi je32_to_cpu(summary->cln_mkr), c->cleanmarker_size); 492e631ddbaSFerenc Havasi UNCHECKED_SPACE(PAD(je32_to_cpu(summary->cln_mkr))); 493e631ddbaSFerenc Havasi } else if (jeb->first_node) { 494733802d9SArtem B. Bityutskiy dbg_summary("CLEANMARKER node not first node in block " 495e631ddbaSFerenc Havasi "(0x%08x)\n", jeb->offset); 496e631ddbaSFerenc Havasi UNCHECKED_SPACE(PAD(je32_to_cpu(summary->cln_mkr))); 497e631ddbaSFerenc Havasi } else { 498e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *marker_ref = jffs2_alloc_raw_node_ref(); 499e631ddbaSFerenc Havasi 500e631ddbaSFerenc Havasi if (!marker_ref) { 501e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for clean marker\n"); 502e631ddbaSFerenc Havasi kfree(summary); 503e631ddbaSFerenc Havasi return -ENOMEM; 504e631ddbaSFerenc Havasi } 505e631ddbaSFerenc Havasi 506e631ddbaSFerenc Havasi marker_ref->next_in_ino = NULL; 507e631ddbaSFerenc Havasi marker_ref->next_phys = NULL; 508e631ddbaSFerenc Havasi marker_ref->flash_offset = jeb->offset | REF_NORMAL; 509e631ddbaSFerenc Havasi marker_ref->__totlen = je32_to_cpu(summary->cln_mkr); 510e631ddbaSFerenc Havasi jeb->first_node = jeb->last_node = marker_ref; 511e631ddbaSFerenc Havasi 512e631ddbaSFerenc Havasi USED_SPACE( PAD(je32_to_cpu(summary->cln_mkr)) ); 513e631ddbaSFerenc Havasi } 514e631ddbaSFerenc Havasi } 515e631ddbaSFerenc Havasi 516e631ddbaSFerenc Havasi if (je32_to_cpu(summary->padded)) { 517e631ddbaSFerenc Havasi DIRTY_SPACE(je32_to_cpu(summary->padded)); 518e631ddbaSFerenc Havasi } 519e631ddbaSFerenc Havasi 520e631ddbaSFerenc Havasi ret = jffs2_sum_process_sum_data(c, jeb, summary, pseudo_random); 521e631ddbaSFerenc Havasi if (ret) 522e631ddbaSFerenc Havasi return ret; 523e631ddbaSFerenc Havasi 524e631ddbaSFerenc Havasi /* for PARANOIA_CHECK */ 525e631ddbaSFerenc Havasi cache_ref = jffs2_alloc_raw_node_ref(); 526e631ddbaSFerenc Havasi 527e631ddbaSFerenc Havasi if (!cache_ref) { 528e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for cache\n"); 529e631ddbaSFerenc Havasi return -ENOMEM; 530e631ddbaSFerenc Havasi } 531e631ddbaSFerenc Havasi 532e631ddbaSFerenc Havasi cache_ref->next_in_ino = NULL; 533e631ddbaSFerenc Havasi cache_ref->next_phys = NULL; 534e631ddbaSFerenc Havasi cache_ref->flash_offset = ofs | REF_NORMAL; 535e631ddbaSFerenc Havasi cache_ref->__totlen = sumsize; 536e631ddbaSFerenc Havasi 537e631ddbaSFerenc Havasi if (!jeb->first_node) 538e631ddbaSFerenc Havasi jeb->first_node = cache_ref; 539e631ddbaSFerenc Havasi if (jeb->last_node) 540e631ddbaSFerenc Havasi jeb->last_node->next_phys = cache_ref; 541e631ddbaSFerenc Havasi jeb->last_node = cache_ref; 542e631ddbaSFerenc Havasi 543e631ddbaSFerenc Havasi USED_SPACE(sumsize); 544e631ddbaSFerenc Havasi 545e631ddbaSFerenc Havasi jeb->wasted_size += jeb->free_size; 546e631ddbaSFerenc Havasi c->wasted_size += jeb->free_size; 547e631ddbaSFerenc Havasi c->free_size -= jeb->free_size; 548e631ddbaSFerenc Havasi jeb->free_size = 0; 549e631ddbaSFerenc Havasi 550e631ddbaSFerenc Havasi return jffs2_scan_classify_jeb(c, jeb); 551e631ddbaSFerenc Havasi 552e631ddbaSFerenc Havasi crc_err: 553e631ddbaSFerenc Havasi JFFS2_WARNING("Summary node crc error, skipping summary information.\n"); 554e631ddbaSFerenc Havasi 555e631ddbaSFerenc Havasi return 0; 556e631ddbaSFerenc Havasi } 557e631ddbaSFerenc Havasi 558e631ddbaSFerenc Havasi /* Write summary data to flash - helper function for jffs2_sum_write_sumnode() */ 559e631ddbaSFerenc Havasi 560e631ddbaSFerenc Havasi static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 561e631ddbaSFerenc Havasi uint32_t infosize, uint32_t datasize, int padsize) 562e631ddbaSFerenc Havasi { 563e631ddbaSFerenc Havasi struct jffs2_summary_node isum; 564e631ddbaSFerenc Havasi union jffs2_sum_mem *temp; 565e631ddbaSFerenc Havasi struct jffs2_sum_marker *sm; 566e631ddbaSFerenc Havasi struct kvec vecs[2]; 567e631ddbaSFerenc Havasi void *wpage; 568e631ddbaSFerenc Havasi int ret; 569e631ddbaSFerenc Havasi size_t retlen; 570e631ddbaSFerenc Havasi 571e631ddbaSFerenc Havasi memset(c->summary->sum_buf, 0xff, datasize); 572e631ddbaSFerenc Havasi memset(&isum, 0, sizeof(isum)); 573e631ddbaSFerenc Havasi 574e631ddbaSFerenc Havasi isum.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 575e631ddbaSFerenc Havasi isum.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY); 576e631ddbaSFerenc Havasi isum.totlen = cpu_to_je32(infosize); 577e631ddbaSFerenc Havasi isum.hdr_crc = cpu_to_je32(crc32(0, &isum, sizeof(struct jffs2_unknown_node) - 4)); 578e631ddbaSFerenc Havasi isum.padded = cpu_to_je32(c->summary->sum_padded); 579e631ddbaSFerenc Havasi isum.cln_mkr = cpu_to_je32(c->cleanmarker_size); 580e631ddbaSFerenc Havasi isum.sum_num = cpu_to_je32(c->summary->sum_num); 581e631ddbaSFerenc Havasi wpage = c->summary->sum_buf; 582e631ddbaSFerenc Havasi 583e631ddbaSFerenc Havasi while (c->summary->sum_num) { 584e631ddbaSFerenc Havasi 585e631ddbaSFerenc Havasi switch (je16_to_cpu(c->summary->sum_list_head->u.nodetype)) { 586e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 587e631ddbaSFerenc Havasi struct jffs2_sum_inode_flash *sino_ptr = wpage; 588e631ddbaSFerenc Havasi 589e631ddbaSFerenc Havasi sino_ptr->nodetype = c->summary->sum_list_head->i.nodetype; 590e631ddbaSFerenc Havasi sino_ptr->inode = c->summary->sum_list_head->i.inode; 591e631ddbaSFerenc Havasi sino_ptr->version = c->summary->sum_list_head->i.version; 592e631ddbaSFerenc Havasi sino_ptr->offset = c->summary->sum_list_head->i.offset; 593e631ddbaSFerenc Havasi sino_ptr->totlen = c->summary->sum_list_head->i.totlen; 594e631ddbaSFerenc Havasi 595e631ddbaSFerenc Havasi wpage += JFFS2_SUMMARY_INODE_SIZE; 596e631ddbaSFerenc Havasi 597e631ddbaSFerenc Havasi break; 598e631ddbaSFerenc Havasi } 599e631ddbaSFerenc Havasi 600e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 601e631ddbaSFerenc Havasi struct jffs2_sum_dirent_flash *sdrnt_ptr = wpage; 602e631ddbaSFerenc Havasi 603e631ddbaSFerenc Havasi sdrnt_ptr->nodetype = c->summary->sum_list_head->d.nodetype; 604e631ddbaSFerenc Havasi sdrnt_ptr->totlen = c->summary->sum_list_head->d.totlen; 605e631ddbaSFerenc Havasi sdrnt_ptr->offset = c->summary->sum_list_head->d.offset; 606e631ddbaSFerenc Havasi sdrnt_ptr->pino = c->summary->sum_list_head->d.pino; 607e631ddbaSFerenc Havasi sdrnt_ptr->version = c->summary->sum_list_head->d.version; 608e631ddbaSFerenc Havasi sdrnt_ptr->ino = c->summary->sum_list_head->d.ino; 609e631ddbaSFerenc Havasi sdrnt_ptr->nsize = c->summary->sum_list_head->d.nsize; 610e631ddbaSFerenc Havasi sdrnt_ptr->type = c->summary->sum_list_head->d.type; 611e631ddbaSFerenc Havasi 612e631ddbaSFerenc Havasi memcpy(sdrnt_ptr->name, c->summary->sum_list_head->d.name, 613e631ddbaSFerenc Havasi c->summary->sum_list_head->d.nsize); 614e631ddbaSFerenc Havasi 615e631ddbaSFerenc Havasi wpage += JFFS2_SUMMARY_DIRENT_SIZE(c->summary->sum_list_head->d.nsize); 616e631ddbaSFerenc Havasi 617e631ddbaSFerenc Havasi break; 618e631ddbaSFerenc Havasi } 619e631ddbaSFerenc Havasi 620e631ddbaSFerenc Havasi default : { 621e631ddbaSFerenc Havasi BUG(); /* unknown node in summary information */ 622e631ddbaSFerenc Havasi } 623e631ddbaSFerenc Havasi } 624e631ddbaSFerenc Havasi 625e631ddbaSFerenc Havasi temp = c->summary->sum_list_head; 626e631ddbaSFerenc Havasi c->summary->sum_list_head = c->summary->sum_list_head->u.next; 627e631ddbaSFerenc Havasi kfree(temp); 628e631ddbaSFerenc Havasi 629e631ddbaSFerenc Havasi c->summary->sum_num--; 630e631ddbaSFerenc Havasi } 631e631ddbaSFerenc Havasi 632e631ddbaSFerenc Havasi jffs2_sum_reset_collected(c->summary); 633e631ddbaSFerenc Havasi 634e631ddbaSFerenc Havasi wpage += padsize; 635e631ddbaSFerenc Havasi 636e631ddbaSFerenc Havasi sm = wpage; 637e631ddbaSFerenc Havasi sm->offset = cpu_to_je32(c->sector_size - jeb->free_size); 638e631ddbaSFerenc Havasi sm->magic = cpu_to_je32(JFFS2_SUM_MAGIC); 639e631ddbaSFerenc Havasi 640e631ddbaSFerenc Havasi isum.sum_crc = cpu_to_je32(crc32(0, c->summary->sum_buf, datasize)); 641e631ddbaSFerenc Havasi isum.node_crc = cpu_to_je32(crc32(0, &isum, sizeof(isum) - 8)); 642e631ddbaSFerenc Havasi 643e631ddbaSFerenc Havasi vecs[0].iov_base = &isum; 644e631ddbaSFerenc Havasi vecs[0].iov_len = sizeof(isum); 645e631ddbaSFerenc Havasi vecs[1].iov_base = c->summary->sum_buf; 646e631ddbaSFerenc Havasi vecs[1].iov_len = datasize; 647e631ddbaSFerenc Havasi 648733802d9SArtem B. Bityutskiy dbg_summary("JFFS2: writing out data to flash to pos : 0x%08x\n", 649e631ddbaSFerenc Havasi jeb->offset + c->sector_size - jeb->free_size); 650e631ddbaSFerenc Havasi 651e631ddbaSFerenc Havasi spin_unlock(&c->erase_completion_lock); 652e631ddbaSFerenc Havasi ret = jffs2_flash_writev(c, vecs, 2, jeb->offset + c->sector_size - 653e631ddbaSFerenc Havasi jeb->free_size, &retlen, 0); 654e631ddbaSFerenc Havasi spin_lock(&c->erase_completion_lock); 655e631ddbaSFerenc Havasi 656e631ddbaSFerenc Havasi 657e631ddbaSFerenc Havasi if (ret || (retlen != infosize)) { 658e631ddbaSFerenc Havasi JFFS2_WARNING("Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n", 659e631ddbaSFerenc Havasi infosize, jeb->offset + c->sector_size - jeb->free_size, ret, retlen); 660e631ddbaSFerenc Havasi 661e631ddbaSFerenc Havasi c->summary->sum_size = JFFS2_SUMMARY_NOSUM_SIZE; 662e631ddbaSFerenc Havasi WASTED_SPACE(infosize); 663e631ddbaSFerenc Havasi 664e631ddbaSFerenc Havasi return 1; 665e631ddbaSFerenc Havasi } 666e631ddbaSFerenc Havasi 667e631ddbaSFerenc Havasi return 0; 668e631ddbaSFerenc Havasi } 669e631ddbaSFerenc Havasi 670e631ddbaSFerenc Havasi /* Write out summary information - called from jffs2_do_reserve_space */ 671e631ddbaSFerenc Havasi 672e631ddbaSFerenc Havasi int jffs2_sum_write_sumnode(struct jffs2_sb_info *c) 673e631ddbaSFerenc Havasi { 674e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *summary_ref; 675e631ddbaSFerenc Havasi int datasize, infosize, padsize, ret; 676e631ddbaSFerenc Havasi struct jffs2_eraseblock *jeb; 677e631ddbaSFerenc Havasi 678733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 679e631ddbaSFerenc Havasi 680e631ddbaSFerenc Havasi jeb = c->nextblock; 681e631ddbaSFerenc Havasi 682e631ddbaSFerenc Havasi if (!c->summary->sum_num || !c->summary->sum_list_head) { 683e631ddbaSFerenc Havasi JFFS2_WARNING("Empty summary info!!!\n"); 684e631ddbaSFerenc Havasi BUG(); 685e631ddbaSFerenc Havasi } 686e631ddbaSFerenc Havasi 687e631ddbaSFerenc Havasi datasize = c->summary->sum_size + sizeof(struct jffs2_sum_marker); 688e631ddbaSFerenc Havasi infosize = sizeof(struct jffs2_summary_node) + datasize; 689e631ddbaSFerenc Havasi padsize = jeb->free_size - infosize; 690e631ddbaSFerenc Havasi infosize += padsize; 691e631ddbaSFerenc Havasi datasize += padsize; 692e631ddbaSFerenc Havasi 693e631ddbaSFerenc Havasi /* Is there enough space for summary? */ 694e631ddbaSFerenc Havasi if (padsize < 0) { 695e631ddbaSFerenc Havasi /* don't try to write out summary for this jeb */ 696e631ddbaSFerenc Havasi jffs2_sum_disable_collecting(c->summary); 697e631ddbaSFerenc Havasi 698e631ddbaSFerenc Havasi JFFS2_WARNING("Not enough space for summary, padsize = %d\n", padsize); 699e631ddbaSFerenc Havasi return 0; 700e631ddbaSFerenc Havasi } 701e631ddbaSFerenc Havasi 702e631ddbaSFerenc Havasi ret = jffs2_sum_write_data(c, jeb, infosize, datasize, padsize); 703e631ddbaSFerenc Havasi if (ret) 704e631ddbaSFerenc Havasi return 0; /* can't write out summary, block is marked as NOSUM_SIZE */ 705e631ddbaSFerenc Havasi 706e631ddbaSFerenc Havasi /* for ACCT_PARANOIA_CHECK */ 707e631ddbaSFerenc Havasi spin_unlock(&c->erase_completion_lock); 708e631ddbaSFerenc Havasi summary_ref = jffs2_alloc_raw_node_ref(); 709e631ddbaSFerenc Havasi spin_lock(&c->erase_completion_lock); 710e631ddbaSFerenc Havasi 711e631ddbaSFerenc Havasi if (!summary_ref) { 712e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for summary\n"); 713e631ddbaSFerenc Havasi return -ENOMEM; 714e631ddbaSFerenc Havasi } 715e631ddbaSFerenc Havasi 716e631ddbaSFerenc Havasi summary_ref->next_in_ino = NULL; 717e631ddbaSFerenc Havasi summary_ref->next_phys = NULL; 718e631ddbaSFerenc Havasi summary_ref->flash_offset = (jeb->offset + c->sector_size - jeb->free_size) | REF_NORMAL; 719e631ddbaSFerenc Havasi summary_ref->__totlen = infosize; 720e631ddbaSFerenc Havasi 721e631ddbaSFerenc Havasi if (!jeb->first_node) 722e631ddbaSFerenc Havasi jeb->first_node = summary_ref; 723e631ddbaSFerenc Havasi if (jeb->last_node) 724e631ddbaSFerenc Havasi jeb->last_node->next_phys = summary_ref; 725e631ddbaSFerenc Havasi jeb->last_node = summary_ref; 726e631ddbaSFerenc Havasi 727e631ddbaSFerenc Havasi USED_SPACE(infosize); 728e631ddbaSFerenc Havasi 729e631ddbaSFerenc Havasi return 0; 730e631ddbaSFerenc Havasi } 731