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 8aa98d7cfSKaiGai Kohei * 2005 KaiGai Kohei <kaigai@ak.jp.nec.com> 9e631ddbaSFerenc Havasi * 10e631ddbaSFerenc Havasi * For licensing information, see the file 'LICENCE' in this directory. 11e631ddbaSFerenc Havasi * 122bc9764cSFerenc Havasi * $Id: summary.c,v 1.4 2005/09/26 11:37:21 havasi Exp $ 13e631ddbaSFerenc Havasi * 14e631ddbaSFerenc Havasi */ 15e631ddbaSFerenc Havasi 16e631ddbaSFerenc Havasi #include <linux/kernel.h> 17e631ddbaSFerenc Havasi #include <linux/sched.h> 18e631ddbaSFerenc Havasi #include <linux/slab.h> 19e631ddbaSFerenc Havasi #include <linux/mtd/mtd.h> 20e631ddbaSFerenc Havasi #include <linux/pagemap.h> 21e631ddbaSFerenc Havasi #include <linux/crc32.h> 22e631ddbaSFerenc Havasi #include <linux/compiler.h> 23e631ddbaSFerenc Havasi #include <linux/vmalloc.h> 24e631ddbaSFerenc Havasi #include "nodelist.h" 25e631ddbaSFerenc Havasi #include "debug.h" 26e631ddbaSFerenc Havasi 27e631ddbaSFerenc Havasi int jffs2_sum_init(struct jffs2_sb_info *c) 28e631ddbaSFerenc Havasi { 29e631ddbaSFerenc Havasi c->summary = kmalloc(sizeof(struct jffs2_summary), GFP_KERNEL); 30e631ddbaSFerenc Havasi 31e631ddbaSFerenc Havasi if (!c->summary) { 32e631ddbaSFerenc Havasi JFFS2_WARNING("Can't allocate memory for summary information!\n"); 33e631ddbaSFerenc Havasi return -ENOMEM; 34e631ddbaSFerenc Havasi } 35e631ddbaSFerenc Havasi 36e631ddbaSFerenc Havasi memset(c->summary, 0, sizeof(struct jffs2_summary)); 37e631ddbaSFerenc Havasi 38e631ddbaSFerenc Havasi c->summary->sum_buf = vmalloc(c->sector_size); 39e631ddbaSFerenc Havasi 40e631ddbaSFerenc Havasi if (!c->summary->sum_buf) { 41e631ddbaSFerenc Havasi JFFS2_WARNING("Can't allocate buffer for writing out summary information!\n"); 42733802d9SArtem B. Bityutskiy kfree(c->summary); 43e631ddbaSFerenc Havasi return -ENOMEM; 44e631ddbaSFerenc Havasi } 45e631ddbaSFerenc Havasi 46733802d9SArtem B. Bityutskiy dbg_summary("returned succesfully\n"); 47e631ddbaSFerenc Havasi 48e631ddbaSFerenc Havasi return 0; 49e631ddbaSFerenc Havasi } 50e631ddbaSFerenc Havasi 51e631ddbaSFerenc Havasi void jffs2_sum_exit(struct jffs2_sb_info *c) 52e631ddbaSFerenc Havasi { 53733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 54e631ddbaSFerenc Havasi 55e631ddbaSFerenc Havasi jffs2_sum_disable_collecting(c->summary); 56e631ddbaSFerenc Havasi 57e631ddbaSFerenc Havasi vfree(c->summary->sum_buf); 58e631ddbaSFerenc Havasi c->summary->sum_buf = NULL; 59e631ddbaSFerenc Havasi 60e631ddbaSFerenc Havasi kfree(c->summary); 61e631ddbaSFerenc Havasi c->summary = NULL; 62e631ddbaSFerenc Havasi } 63e631ddbaSFerenc Havasi 64e631ddbaSFerenc Havasi static int jffs2_sum_add_mem(struct jffs2_summary *s, union jffs2_sum_mem *item) 65e631ddbaSFerenc Havasi { 66e631ddbaSFerenc Havasi if (!s->sum_list_head) 67e631ddbaSFerenc Havasi s->sum_list_head = (union jffs2_sum_mem *) item; 68e631ddbaSFerenc Havasi if (s->sum_list_tail) 69e631ddbaSFerenc Havasi s->sum_list_tail->u.next = (union jffs2_sum_mem *) item; 70e631ddbaSFerenc Havasi s->sum_list_tail = (union jffs2_sum_mem *) item; 71e631ddbaSFerenc Havasi 72e631ddbaSFerenc Havasi switch (je16_to_cpu(item->u.nodetype)) { 73e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: 74e631ddbaSFerenc Havasi s->sum_size += JFFS2_SUMMARY_INODE_SIZE; 75e631ddbaSFerenc Havasi s->sum_num++; 76733802d9SArtem B. Bityutskiy dbg_summary("inode (%u) added to summary\n", 77e631ddbaSFerenc Havasi je32_to_cpu(item->i.inode)); 78e631ddbaSFerenc Havasi break; 79e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: 80e631ddbaSFerenc Havasi s->sum_size += JFFS2_SUMMARY_DIRENT_SIZE(item->d.nsize); 81e631ddbaSFerenc Havasi s->sum_num++; 82733802d9SArtem B. Bityutskiy dbg_summary("dirent (%u) added to summary\n", 83e631ddbaSFerenc Havasi je32_to_cpu(item->d.ino)); 84e631ddbaSFerenc Havasi break; 85aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 86aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XATTR: 87aa98d7cfSKaiGai Kohei s->sum_size += JFFS2_SUMMARY_XATTR_SIZE; 88aa98d7cfSKaiGai Kohei s->sum_num++; 89aa98d7cfSKaiGai Kohei dbg_summary("xattr (xid=%u, version=%u) added to summary\n", 90aa98d7cfSKaiGai Kohei je32_to_cpu(item->x.xid), je32_to_cpu(item->x.version)); 91aa98d7cfSKaiGai Kohei break; 92aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XREF: 93aa98d7cfSKaiGai Kohei s->sum_size += JFFS2_SUMMARY_XREF_SIZE; 94aa98d7cfSKaiGai Kohei s->sum_num++; 95aa98d7cfSKaiGai Kohei dbg_summary("xref added to summary\n"); 96aa98d7cfSKaiGai Kohei break; 97aa98d7cfSKaiGai Kohei #endif 98e631ddbaSFerenc Havasi default: 99e631ddbaSFerenc Havasi JFFS2_WARNING("UNKNOWN node type %u\n", 100e631ddbaSFerenc Havasi je16_to_cpu(item->u.nodetype)); 101e631ddbaSFerenc Havasi return 1; 102e631ddbaSFerenc Havasi } 103e631ddbaSFerenc Havasi return 0; 104e631ddbaSFerenc Havasi } 105e631ddbaSFerenc Havasi 106e631ddbaSFerenc Havasi 107e631ddbaSFerenc Havasi /* The following 3 functions are called from scan.c to collect summary info for not closed jeb */ 108e631ddbaSFerenc Havasi 109e631ddbaSFerenc Havasi int jffs2_sum_add_padding_mem(struct jffs2_summary *s, uint32_t size) 110e631ddbaSFerenc Havasi { 111733802d9SArtem B. Bityutskiy dbg_summary("called with %u\n", size); 112e631ddbaSFerenc Havasi s->sum_padded += size; 113e631ddbaSFerenc Havasi return 0; 114e631ddbaSFerenc Havasi } 115e631ddbaSFerenc Havasi 116e631ddbaSFerenc Havasi int jffs2_sum_add_inode_mem(struct jffs2_summary *s, struct jffs2_raw_inode *ri, 117e631ddbaSFerenc Havasi uint32_t ofs) 118e631ddbaSFerenc Havasi { 119e631ddbaSFerenc Havasi struct jffs2_sum_inode_mem *temp = kmalloc(sizeof(struct jffs2_sum_inode_mem), GFP_KERNEL); 120e631ddbaSFerenc Havasi 121e631ddbaSFerenc Havasi if (!temp) 122e631ddbaSFerenc Havasi return -ENOMEM; 123e631ddbaSFerenc Havasi 124e631ddbaSFerenc Havasi temp->nodetype = ri->nodetype; 125e631ddbaSFerenc Havasi temp->inode = ri->ino; 126e631ddbaSFerenc Havasi temp->version = ri->version; 127e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); /* relative offset from the begining of the jeb */ 128e631ddbaSFerenc Havasi temp->totlen = ri->totlen; 129e631ddbaSFerenc Havasi temp->next = NULL; 130e631ddbaSFerenc Havasi 131e631ddbaSFerenc Havasi return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp); 132e631ddbaSFerenc Havasi } 133e631ddbaSFerenc Havasi 134e631ddbaSFerenc Havasi int jffs2_sum_add_dirent_mem(struct jffs2_summary *s, struct jffs2_raw_dirent *rd, 135e631ddbaSFerenc Havasi uint32_t ofs) 136e631ddbaSFerenc Havasi { 137e631ddbaSFerenc Havasi struct jffs2_sum_dirent_mem *temp = 138e631ddbaSFerenc Havasi kmalloc(sizeof(struct jffs2_sum_dirent_mem) + rd->nsize, GFP_KERNEL); 139e631ddbaSFerenc Havasi 140e631ddbaSFerenc Havasi if (!temp) 141e631ddbaSFerenc Havasi return -ENOMEM; 142e631ddbaSFerenc Havasi 143e631ddbaSFerenc Havasi temp->nodetype = rd->nodetype; 144e631ddbaSFerenc Havasi temp->totlen = rd->totlen; 145e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); /* relative from the begining of the jeb */ 146e631ddbaSFerenc Havasi temp->pino = rd->pino; 147e631ddbaSFerenc Havasi temp->version = rd->version; 148e631ddbaSFerenc Havasi temp->ino = rd->ino; 149e631ddbaSFerenc Havasi temp->nsize = rd->nsize; 150e631ddbaSFerenc Havasi temp->type = rd->type; 151e631ddbaSFerenc Havasi temp->next = NULL; 152e631ddbaSFerenc Havasi 153e631ddbaSFerenc Havasi memcpy(temp->name, rd->name, rd->nsize); 154e631ddbaSFerenc Havasi 155e631ddbaSFerenc Havasi return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp); 156e631ddbaSFerenc Havasi } 157e631ddbaSFerenc Havasi 158aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 159aa98d7cfSKaiGai Kohei int jffs2_sum_add_xattr_mem(struct jffs2_summary *s, struct jffs2_raw_xattr *rx, uint32_t ofs) 160aa98d7cfSKaiGai Kohei { 161aa98d7cfSKaiGai Kohei struct jffs2_sum_xattr_mem *temp; 162aa98d7cfSKaiGai Kohei 163aa98d7cfSKaiGai Kohei temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL); 164aa98d7cfSKaiGai Kohei if (!temp) 165aa98d7cfSKaiGai Kohei return -ENOMEM; 166aa98d7cfSKaiGai Kohei 167aa98d7cfSKaiGai Kohei temp->nodetype = rx->nodetype; 168aa98d7cfSKaiGai Kohei temp->xid = rx->xid; 169aa98d7cfSKaiGai Kohei temp->version = rx->version; 170aa98d7cfSKaiGai Kohei temp->offset = cpu_to_je32(ofs); 171aa98d7cfSKaiGai Kohei temp->totlen = rx->totlen; 172aa98d7cfSKaiGai Kohei temp->next = NULL; 173aa98d7cfSKaiGai Kohei 174aa98d7cfSKaiGai Kohei return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp); 175aa98d7cfSKaiGai Kohei } 176aa98d7cfSKaiGai Kohei 177aa98d7cfSKaiGai Kohei int jffs2_sum_add_xref_mem(struct jffs2_summary *s, struct jffs2_raw_xref *rr, uint32_t ofs) 178aa98d7cfSKaiGai Kohei { 179aa98d7cfSKaiGai Kohei struct jffs2_sum_xref_mem *temp; 180aa98d7cfSKaiGai Kohei 181aa98d7cfSKaiGai Kohei temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL); 182aa98d7cfSKaiGai Kohei if (!temp) 183aa98d7cfSKaiGai Kohei return -ENOMEM; 184aa98d7cfSKaiGai Kohei 185aa98d7cfSKaiGai Kohei temp->nodetype = rr->nodetype; 186aa98d7cfSKaiGai Kohei temp->offset = cpu_to_je32(ofs); 187aa98d7cfSKaiGai Kohei temp->next = NULL; 188aa98d7cfSKaiGai Kohei 189aa98d7cfSKaiGai Kohei return jffs2_sum_add_mem(s, (union jffs2_sum_mem *)temp); 190aa98d7cfSKaiGai Kohei } 191aa98d7cfSKaiGai Kohei #endif 192e631ddbaSFerenc Havasi /* Cleanup every collected summary information */ 193e631ddbaSFerenc Havasi 194e631ddbaSFerenc Havasi static void jffs2_sum_clean_collected(struct jffs2_summary *s) 195e631ddbaSFerenc Havasi { 196e631ddbaSFerenc Havasi union jffs2_sum_mem *temp; 197e631ddbaSFerenc Havasi 198e631ddbaSFerenc Havasi if (!s->sum_list_head) { 199733802d9SArtem B. Bityutskiy dbg_summary("already empty\n"); 200e631ddbaSFerenc Havasi } 201e631ddbaSFerenc Havasi while (s->sum_list_head) { 202e631ddbaSFerenc Havasi temp = s->sum_list_head; 203e631ddbaSFerenc Havasi s->sum_list_head = s->sum_list_head->u.next; 204e631ddbaSFerenc Havasi kfree(temp); 205e631ddbaSFerenc Havasi } 206e631ddbaSFerenc Havasi s->sum_list_tail = NULL; 207e631ddbaSFerenc Havasi s->sum_padded = 0; 208e631ddbaSFerenc Havasi s->sum_num = 0; 209e631ddbaSFerenc Havasi } 210e631ddbaSFerenc Havasi 211e631ddbaSFerenc Havasi void jffs2_sum_reset_collected(struct jffs2_summary *s) 212e631ddbaSFerenc Havasi { 213733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 214e631ddbaSFerenc Havasi jffs2_sum_clean_collected(s); 215e631ddbaSFerenc Havasi s->sum_size = 0; 216e631ddbaSFerenc Havasi } 217e631ddbaSFerenc Havasi 218e631ddbaSFerenc Havasi void jffs2_sum_disable_collecting(struct jffs2_summary *s) 219e631ddbaSFerenc Havasi { 220733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 221e631ddbaSFerenc Havasi jffs2_sum_clean_collected(s); 222e631ddbaSFerenc Havasi s->sum_size = JFFS2_SUMMARY_NOSUM_SIZE; 223e631ddbaSFerenc Havasi } 224e631ddbaSFerenc Havasi 225e631ddbaSFerenc Havasi int jffs2_sum_is_disabled(struct jffs2_summary *s) 226e631ddbaSFerenc Havasi { 227e631ddbaSFerenc Havasi return (s->sum_size == JFFS2_SUMMARY_NOSUM_SIZE); 228e631ddbaSFerenc Havasi } 229e631ddbaSFerenc Havasi 230e631ddbaSFerenc Havasi /* Move the collected summary information into sb (called from scan.c) */ 231e631ddbaSFerenc Havasi 232e631ddbaSFerenc Havasi void jffs2_sum_move_collected(struct jffs2_sb_info *c, struct jffs2_summary *s) 233e631ddbaSFerenc Havasi { 234733802d9SArtem B. Bityutskiy dbg_summary("oldsize=0x%x oldnum=%u => newsize=0x%x newnum=%u\n", 235e631ddbaSFerenc Havasi c->summary->sum_size, c->summary->sum_num, 236e631ddbaSFerenc Havasi s->sum_size, s->sum_num); 237e631ddbaSFerenc Havasi 238e631ddbaSFerenc Havasi c->summary->sum_size = s->sum_size; 239e631ddbaSFerenc Havasi c->summary->sum_num = s->sum_num; 240e631ddbaSFerenc Havasi c->summary->sum_padded = s->sum_padded; 241e631ddbaSFerenc Havasi c->summary->sum_list_head = s->sum_list_head; 242e631ddbaSFerenc Havasi c->summary->sum_list_tail = s->sum_list_tail; 243e631ddbaSFerenc Havasi 244e631ddbaSFerenc Havasi s->sum_list_head = s->sum_list_tail = NULL; 245e631ddbaSFerenc Havasi } 246e631ddbaSFerenc Havasi 247e631ddbaSFerenc Havasi /* Called from wbuf.c to collect writed node info */ 248e631ddbaSFerenc Havasi 249e631ddbaSFerenc Havasi int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs, 250e631ddbaSFerenc Havasi unsigned long count, uint32_t ofs) 251e631ddbaSFerenc Havasi { 252e631ddbaSFerenc Havasi union jffs2_node_union *node; 253e631ddbaSFerenc Havasi struct jffs2_eraseblock *jeb; 254e631ddbaSFerenc Havasi 255e631ddbaSFerenc Havasi node = invecs[0].iov_base; 256e631ddbaSFerenc Havasi jeb = &c->blocks[ofs / c->sector_size]; 257e631ddbaSFerenc Havasi ofs -= jeb->offset; 258e631ddbaSFerenc Havasi 259e631ddbaSFerenc Havasi switch (je16_to_cpu(node->u.nodetype)) { 260e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 261e631ddbaSFerenc Havasi struct jffs2_sum_inode_mem *temp = 262e631ddbaSFerenc Havasi kmalloc(sizeof(struct jffs2_sum_inode_mem), GFP_KERNEL); 263e631ddbaSFerenc Havasi 264e631ddbaSFerenc Havasi if (!temp) 265e631ddbaSFerenc Havasi goto no_mem; 266e631ddbaSFerenc Havasi 267e631ddbaSFerenc Havasi temp->nodetype = node->i.nodetype; 268e631ddbaSFerenc Havasi temp->inode = node->i.ino; 269e631ddbaSFerenc Havasi temp->version = node->i.version; 270e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); 271e631ddbaSFerenc Havasi temp->totlen = node->i.totlen; 272e631ddbaSFerenc Havasi temp->next = NULL; 273e631ddbaSFerenc Havasi 274e631ddbaSFerenc Havasi return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp); 275e631ddbaSFerenc Havasi } 276e631ddbaSFerenc Havasi 277e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 278e631ddbaSFerenc Havasi struct jffs2_sum_dirent_mem *temp = 279e631ddbaSFerenc Havasi kmalloc(sizeof(struct jffs2_sum_dirent_mem) + node->d.nsize, GFP_KERNEL); 280e631ddbaSFerenc Havasi 281e631ddbaSFerenc Havasi if (!temp) 282e631ddbaSFerenc Havasi goto no_mem; 283e631ddbaSFerenc Havasi 284e631ddbaSFerenc Havasi temp->nodetype = node->d.nodetype; 285e631ddbaSFerenc Havasi temp->totlen = node->d.totlen; 286e631ddbaSFerenc Havasi temp->offset = cpu_to_je32(ofs); 287e631ddbaSFerenc Havasi temp->pino = node->d.pino; 288e631ddbaSFerenc Havasi temp->version = node->d.version; 289e631ddbaSFerenc Havasi temp->ino = node->d.ino; 290e631ddbaSFerenc Havasi temp->nsize = node->d.nsize; 291e631ddbaSFerenc Havasi temp->type = node->d.type; 292e631ddbaSFerenc Havasi temp->next = NULL; 293e631ddbaSFerenc Havasi 294e631ddbaSFerenc Havasi switch (count) { 295e631ddbaSFerenc Havasi case 1: 296e631ddbaSFerenc Havasi memcpy(temp->name,node->d.name,node->d.nsize); 297e631ddbaSFerenc Havasi break; 298e631ddbaSFerenc Havasi 299e631ddbaSFerenc Havasi case 2: 300e631ddbaSFerenc Havasi memcpy(temp->name,invecs[1].iov_base,node->d.nsize); 301e631ddbaSFerenc Havasi break; 302e631ddbaSFerenc Havasi 303e631ddbaSFerenc Havasi default: 304e631ddbaSFerenc Havasi BUG(); /* impossible count value */ 305e631ddbaSFerenc Havasi break; 306e631ddbaSFerenc Havasi } 307e631ddbaSFerenc Havasi 308e631ddbaSFerenc Havasi return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp); 309e631ddbaSFerenc Havasi } 310aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 311aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XATTR: { 312aa98d7cfSKaiGai Kohei struct jffs2_sum_xattr_mem *temp; 313aa98d7cfSKaiGai Kohei if (je32_to_cpu(node->x.version) == 0xffffffff) 314aa98d7cfSKaiGai Kohei return 0; 315aa98d7cfSKaiGai Kohei temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL); 316aa98d7cfSKaiGai Kohei if (!temp) 317aa98d7cfSKaiGai Kohei goto no_mem; 318e631ddbaSFerenc Havasi 319aa98d7cfSKaiGai Kohei temp->nodetype = node->x.nodetype; 320aa98d7cfSKaiGai Kohei temp->xid = node->x.xid; 321aa98d7cfSKaiGai Kohei temp->version = node->x.version; 322aa98d7cfSKaiGai Kohei temp->totlen = node->x.totlen; 323aa98d7cfSKaiGai Kohei temp->offset = cpu_to_je32(ofs); 324aa98d7cfSKaiGai Kohei temp->next = NULL; 325aa98d7cfSKaiGai Kohei 326aa98d7cfSKaiGai Kohei return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp); 327aa98d7cfSKaiGai Kohei } 328aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XREF: { 329aa98d7cfSKaiGai Kohei struct jffs2_sum_xref_mem *temp; 330aa98d7cfSKaiGai Kohei 331aa98d7cfSKaiGai Kohei if (je32_to_cpu(node->r.ino) == 0xffffffff 332aa98d7cfSKaiGai Kohei && je32_to_cpu(node->r.xid) == 0xffffffff) 333aa98d7cfSKaiGai Kohei return 0; 334aa98d7cfSKaiGai Kohei temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL); 335aa98d7cfSKaiGai Kohei if (!temp) 336aa98d7cfSKaiGai Kohei goto no_mem; 337aa98d7cfSKaiGai Kohei temp->nodetype = node->r.nodetype; 338aa98d7cfSKaiGai Kohei temp->offset = cpu_to_je32(ofs); 339aa98d7cfSKaiGai Kohei temp->next = NULL; 340aa98d7cfSKaiGai Kohei 341aa98d7cfSKaiGai Kohei return jffs2_sum_add_mem(c->summary, (union jffs2_sum_mem *)temp); 342aa98d7cfSKaiGai Kohei } 343aa98d7cfSKaiGai Kohei #endif 344e631ddbaSFerenc Havasi case JFFS2_NODETYPE_PADDING: 345733802d9SArtem B. Bityutskiy dbg_summary("node PADDING\n"); 346e631ddbaSFerenc Havasi c->summary->sum_padded += je32_to_cpu(node->u.totlen); 347e631ddbaSFerenc Havasi break; 348e631ddbaSFerenc Havasi 349e631ddbaSFerenc Havasi case JFFS2_NODETYPE_CLEANMARKER: 350733802d9SArtem B. Bityutskiy dbg_summary("node CLEANMARKER\n"); 351e631ddbaSFerenc Havasi break; 352e631ddbaSFerenc Havasi 353e631ddbaSFerenc Havasi case JFFS2_NODETYPE_SUMMARY: 354733802d9SArtem B. Bityutskiy dbg_summary("node SUMMARY\n"); 355e631ddbaSFerenc Havasi break; 356e631ddbaSFerenc Havasi 357e631ddbaSFerenc Havasi default: 358e631ddbaSFerenc Havasi /* If you implement a new node type you should also implement 359e631ddbaSFerenc Havasi summary support for it or disable summary. 360e631ddbaSFerenc Havasi */ 361e631ddbaSFerenc Havasi BUG(); 362e631ddbaSFerenc Havasi break; 363e631ddbaSFerenc Havasi } 364e631ddbaSFerenc Havasi 365e631ddbaSFerenc Havasi return 0; 366e631ddbaSFerenc Havasi 367e631ddbaSFerenc Havasi no_mem: 368e631ddbaSFerenc Havasi JFFS2_WARNING("MEMORY ALLOCATION ERROR!"); 369e631ddbaSFerenc Havasi return -ENOMEM; 370e631ddbaSFerenc Havasi } 371e631ddbaSFerenc Havasi 37249f11d40SDavid Woodhouse static struct jffs2_raw_node_ref *alloc_ref_at(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 37349f11d40SDavid Woodhouse uint32_t offset) 37449f11d40SDavid Woodhouse { 37549f11d40SDavid Woodhouse struct jffs2_raw_node_ref *ref; 37649f11d40SDavid Woodhouse /* If there was a gap, mark it dirty */ 37749f11d40SDavid Woodhouse if (offset > c->sector_size - jeb->free_size) { 37849f11d40SDavid Woodhouse int ret = jffs2_scan_dirty_space(c, jeb, offset - (c->sector_size - jeb->free_size)); 37949f11d40SDavid Woodhouse if (ret) 38049f11d40SDavid Woodhouse return NULL; 38149f11d40SDavid Woodhouse } 38249f11d40SDavid Woodhouse ref = jffs2_alloc_raw_node_ref(); 38349f11d40SDavid Woodhouse if (!ref) 38449f11d40SDavid Woodhouse return NULL; 38549f11d40SDavid Woodhouse 38649f11d40SDavid Woodhouse ref->flash_offset = jeb->offset + offset; 38749f11d40SDavid Woodhouse return ref; 38849f11d40SDavid Woodhouse } 389e631ddbaSFerenc Havasi 390e631ddbaSFerenc Havasi /* Process the stored summary information - helper function for jffs2_sum_scan_sumnode() */ 391e631ddbaSFerenc Havasi 392e631ddbaSFerenc Havasi static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 3932bc9764cSFerenc Havasi struct jffs2_raw_summary *summary, uint32_t *pseudo_random) 394e631ddbaSFerenc Havasi { 395e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *raw; 396e631ddbaSFerenc Havasi struct jffs2_inode_cache *ic; 397e631ddbaSFerenc Havasi struct jffs2_full_dirent *fd; 398e631ddbaSFerenc Havasi void *sp; 399e631ddbaSFerenc Havasi int i, ino; 40068270995SDavid Woodhouse int err; 401e631ddbaSFerenc Havasi 402e631ddbaSFerenc Havasi sp = summary->sum; 403e631ddbaSFerenc Havasi 404e631ddbaSFerenc Havasi for (i=0; i<je32_to_cpu(summary->sum_num); i++) { 405733802d9SArtem B. Bityutskiy dbg_summary("processing summary index %d\n", i); 406e631ddbaSFerenc Havasi 407e631ddbaSFerenc Havasi switch (je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype)) { 408e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 409e631ddbaSFerenc Havasi struct jffs2_sum_inode_flash *spi; 410e631ddbaSFerenc Havasi spi = sp; 411e631ddbaSFerenc Havasi 412e631ddbaSFerenc Havasi ino = je32_to_cpu(spi->inode); 413e631ddbaSFerenc Havasi 414733802d9SArtem B. Bityutskiy dbg_summary("Inode at 0x%08x\n", 415e631ddbaSFerenc Havasi jeb->offset + je32_to_cpu(spi->offset)); 416e631ddbaSFerenc Havasi 41749f11d40SDavid Woodhouse raw = alloc_ref_at(c, jeb, je32_to_cpu(spi->offset)); 418e631ddbaSFerenc Havasi if (!raw) { 419e631ddbaSFerenc Havasi JFFS2_NOTICE("allocation of node reference failed\n"); 420e631ddbaSFerenc Havasi return -ENOMEM; 421e631ddbaSFerenc Havasi } 422e631ddbaSFerenc Havasi 423e631ddbaSFerenc Havasi ic = jffs2_scan_make_ino_cache(c, ino); 424e631ddbaSFerenc Havasi if (!ic) { 425e631ddbaSFerenc Havasi JFFS2_NOTICE("scan_make_ino_cache failed\n"); 426e631ddbaSFerenc Havasi jffs2_free_raw_node_ref(raw); 427e631ddbaSFerenc Havasi return -ENOMEM; 428e631ddbaSFerenc Havasi } 429e631ddbaSFerenc Havasi 43049f11d40SDavid Woodhouse raw->flash_offset |= REF_UNCHECKED; 431f1f9671bSDavid Woodhouse 432e631ddbaSFerenc Havasi raw->next_in_ino = ic->nodes; 433e631ddbaSFerenc Havasi ic->nodes = raw; 434e631ddbaSFerenc Havasi 435f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spi->totlen))); 436f1f9671bSDavid Woodhouse 437f1f9671bSDavid Woodhouse *pseudo_random += je32_to_cpu(spi->version); 438e631ddbaSFerenc Havasi 439e631ddbaSFerenc Havasi sp += JFFS2_SUMMARY_INODE_SIZE; 440e631ddbaSFerenc Havasi 441e631ddbaSFerenc Havasi break; 442e631ddbaSFerenc Havasi } 443e631ddbaSFerenc Havasi 444e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 445e631ddbaSFerenc Havasi struct jffs2_sum_dirent_flash *spd; 446e631ddbaSFerenc Havasi spd = sp; 447e631ddbaSFerenc Havasi 448733802d9SArtem B. Bityutskiy dbg_summary("Dirent at 0x%08x\n", 449e631ddbaSFerenc Havasi jeb->offset + je32_to_cpu(spd->offset)); 450e631ddbaSFerenc Havasi 451e631ddbaSFerenc Havasi fd = jffs2_alloc_full_dirent(spd->nsize+1); 4529641b784SDavid Woodhouse if (!fd) 453e631ddbaSFerenc Havasi return -ENOMEM; 454e631ddbaSFerenc Havasi 455e631ddbaSFerenc Havasi memcpy(&fd->name, spd->name, spd->nsize); 456e631ddbaSFerenc Havasi fd->name[spd->nsize] = 0; 457e631ddbaSFerenc Havasi 45849f11d40SDavid Woodhouse raw = alloc_ref_at(c, jeb, je32_to_cpu(spd->offset)); 459e631ddbaSFerenc Havasi if (!raw) { 460e631ddbaSFerenc Havasi jffs2_free_full_dirent(fd); 461e631ddbaSFerenc Havasi JFFS2_NOTICE("allocation of node reference failed\n"); 462e631ddbaSFerenc Havasi return -ENOMEM; 463e631ddbaSFerenc Havasi } 464e631ddbaSFerenc Havasi 465e631ddbaSFerenc Havasi ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(spd->pino)); 466e631ddbaSFerenc Havasi if (!ic) { 467e631ddbaSFerenc Havasi jffs2_free_full_dirent(fd); 468e631ddbaSFerenc Havasi jffs2_free_raw_node_ref(raw); 469e631ddbaSFerenc Havasi return -ENOMEM; 470e631ddbaSFerenc Havasi } 471e631ddbaSFerenc Havasi 47249f11d40SDavid Woodhouse raw->flash_offset |= REF_PRISTINE; 473e631ddbaSFerenc Havasi raw->next_in_ino = ic->nodes; 474e631ddbaSFerenc Havasi ic->nodes = raw; 475f1f9671bSDavid Woodhouse 476f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spd->totlen))); 477e631ddbaSFerenc Havasi 478e631ddbaSFerenc Havasi fd->raw = raw; 479e631ddbaSFerenc Havasi fd->next = NULL; 480e631ddbaSFerenc Havasi fd->version = je32_to_cpu(spd->version); 481e631ddbaSFerenc Havasi fd->ino = je32_to_cpu(spd->ino); 482e631ddbaSFerenc Havasi fd->nhash = full_name_hash(fd->name, spd->nsize); 483e631ddbaSFerenc Havasi fd->type = spd->type; 484f1f9671bSDavid Woodhouse 485e631ddbaSFerenc Havasi jffs2_add_fd_to_list(c, fd, &ic->scan_dents); 486e631ddbaSFerenc Havasi 487e631ddbaSFerenc Havasi *pseudo_random += je32_to_cpu(spd->version); 488e631ddbaSFerenc Havasi 489e631ddbaSFerenc Havasi sp += JFFS2_SUMMARY_DIRENT_SIZE(spd->nsize); 490e631ddbaSFerenc Havasi 491e631ddbaSFerenc Havasi break; 492e631ddbaSFerenc Havasi } 493aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 494aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XATTR: { 495aa98d7cfSKaiGai Kohei struct jffs2_xattr_datum *xd; 496aa98d7cfSKaiGai Kohei struct jffs2_sum_xattr_flash *spx; 497e631ddbaSFerenc Havasi 498aa98d7cfSKaiGai Kohei spx = (struct jffs2_sum_xattr_flash *)sp; 49949f11d40SDavid Woodhouse dbg_summary("xattr at %#08x (xid=%u, version=%u)\n", 50049f11d40SDavid Woodhouse jeb->offset + je32_to_cpu(spx->offset), 501aa98d7cfSKaiGai Kohei je32_to_cpu(spx->xid), je32_to_cpu(spx->version)); 50249f11d40SDavid Woodhouse raw = alloc_ref_at(c, jeb, je32_to_cpu(spx->offset)); 503aa98d7cfSKaiGai Kohei if (!raw) { 504aa98d7cfSKaiGai Kohei JFFS2_NOTICE("allocation of node reference failed\n"); 505aa98d7cfSKaiGai Kohei kfree(summary); 506aa98d7cfSKaiGai Kohei return -ENOMEM; 507aa98d7cfSKaiGai Kohei } 508aa98d7cfSKaiGai Kohei xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid), 509aa98d7cfSKaiGai Kohei je32_to_cpu(spx->version)); 510aa98d7cfSKaiGai Kohei if (IS_ERR(xd)) { 511aa98d7cfSKaiGai Kohei jffs2_free_raw_node_ref(raw); 512c8708a92SKaiGai Kohei if (PTR_ERR(xd) == -EEXIST) { 513c8708a92SKaiGai Kohei /* a newer version of xd exists */ 51468270995SDavid Woodhouse if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(spx->totlen)))) 51568270995SDavid Woodhouse return err; 516c8708a92SKaiGai Kohei sp += JFFS2_SUMMARY_XATTR_SIZE; 517c8708a92SKaiGai Kohei break; 518c8708a92SKaiGai Kohei } 519c8708a92SKaiGai Kohei JFFS2_NOTICE("allocation of xattr_datum failed\n"); 520aa98d7cfSKaiGai Kohei kfree(summary); 521aa98d7cfSKaiGai Kohei return PTR_ERR(xd); 522aa98d7cfSKaiGai Kohei } 523aa98d7cfSKaiGai Kohei xd->node = raw; 524aa98d7cfSKaiGai Kohei 52549f11d40SDavid Woodhouse raw->flash_offset |= REF_UNCHECKED; 526aa98d7cfSKaiGai Kohei raw->next_in_ino = (void *)xd; 527f1f9671bSDavid Woodhouse 528f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spx->totlen))); 529aa98d7cfSKaiGai Kohei 530aa98d7cfSKaiGai Kohei *pseudo_random += je32_to_cpu(spx->xid); 531aa98d7cfSKaiGai Kohei sp += JFFS2_SUMMARY_XATTR_SIZE; 532aa98d7cfSKaiGai Kohei 533aa98d7cfSKaiGai Kohei break; 534aa98d7cfSKaiGai Kohei } 535aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XREF: { 536aa98d7cfSKaiGai Kohei struct jffs2_xattr_ref *ref; 537aa98d7cfSKaiGai Kohei struct jffs2_sum_xref_flash *spr; 538aa98d7cfSKaiGai Kohei 539aa98d7cfSKaiGai Kohei spr = (struct jffs2_sum_xref_flash *)sp; 54049f11d40SDavid Woodhouse dbg_summary("xref at %#08x (xid=%u, ino=%u)\n", 54149f11d40SDavid Woodhouse jeb->offset + je32_to_cpu(spr->offset), 542aa98d7cfSKaiGai Kohei je32_to_cpu(spr->xid), je32_to_cpu(spr->ino)); 54349f11d40SDavid Woodhouse raw = alloc_ref_at(c, jeb, je32_to_cpu(spr->offset)); 544aa98d7cfSKaiGai Kohei if (!raw) { 545aa98d7cfSKaiGai Kohei JFFS2_NOTICE("allocation of node reference failed\n"); 546aa98d7cfSKaiGai Kohei kfree(summary); 547aa98d7cfSKaiGai Kohei return -ENOMEM; 548aa98d7cfSKaiGai Kohei } 549aa98d7cfSKaiGai Kohei ref = jffs2_alloc_xattr_ref(); 550aa98d7cfSKaiGai Kohei if (!ref) { 551aa98d7cfSKaiGai Kohei JFFS2_NOTICE("allocation of xattr_datum failed\n"); 552aa98d7cfSKaiGai Kohei jffs2_free_raw_node_ref(raw); 553aa98d7cfSKaiGai Kohei kfree(summary); 554aa98d7cfSKaiGai Kohei return -ENOMEM; 555aa98d7cfSKaiGai Kohei } 556aa98d7cfSKaiGai Kohei ref->ino = 0xfffffffe; 557aa98d7cfSKaiGai Kohei ref->xid = 0xfffffffd; 558aa98d7cfSKaiGai Kohei ref->node = raw; 5598f2b6f49SKaiGai Kohei ref->next = c->xref_temp; 5608f2b6f49SKaiGai Kohei c->xref_temp = ref; 561aa98d7cfSKaiGai Kohei 56249f11d40SDavid Woodhouse raw->flash_offset |= REF_UNCHECKED; 563aa98d7cfSKaiGai Kohei raw->next_in_ino = (void *)ref; 564aa98d7cfSKaiGai Kohei 565f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(sizeof(struct jffs2_raw_xref))); 566f1f9671bSDavid Woodhouse 56749f11d40SDavid Woodhouse *pseudo_random += raw->flash_offset; 568aa98d7cfSKaiGai Kohei sp += JFFS2_SUMMARY_XREF_SIZE; 569aa98d7cfSKaiGai Kohei 570aa98d7cfSKaiGai Kohei break; 571aa98d7cfSKaiGai Kohei } 572aa98d7cfSKaiGai Kohei #endif 573e631ddbaSFerenc Havasi default : { 5747807ef7bSDavid Woodhouse uint16_t nodetype = je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype); 5757807ef7bSDavid Woodhouse JFFS2_WARNING("Unsupported node type %x found in summary! Exiting...\n", nodetype); 5767807ef7bSDavid Woodhouse if ((nodetype & JFFS2_COMPAT_MASK) == JFFS2_FEATURE_INCOMPAT) 577e631ddbaSFerenc Havasi return -EIO; 5787807ef7bSDavid Woodhouse 5797807ef7bSDavid Woodhouse /* For compatible node types, just fall back to the full scan */ 5807807ef7bSDavid Woodhouse c->wasted_size -= jeb->wasted_size; 5817807ef7bSDavid Woodhouse c->free_size += c->sector_size - jeb->free_size; 5827807ef7bSDavid Woodhouse c->used_size -= jeb->used_size; 5837807ef7bSDavid Woodhouse c->dirty_size -= jeb->dirty_size; 5847807ef7bSDavid Woodhouse jeb->wasted_size = jeb->used_size = jeb->dirty_size = 0; 5857807ef7bSDavid Woodhouse jeb->free_size = c->sector_size; 5867807ef7bSDavid Woodhouse 5877807ef7bSDavid Woodhouse jffs2_free_all_node_refs(c, jeb); 5887807ef7bSDavid Woodhouse return -ENOTRECOVERABLE; 589e631ddbaSFerenc Havasi } 590e631ddbaSFerenc Havasi } 591e631ddbaSFerenc Havasi } 592e631ddbaSFerenc Havasi 593e631ddbaSFerenc Havasi return 0; 594e631ddbaSFerenc Havasi } 595e631ddbaSFerenc Havasi 596e631ddbaSFerenc Havasi /* Process the summary node - called from jffs2_scan_eraseblock() */ 597e631ddbaSFerenc Havasi int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 5989641b784SDavid Woodhouse struct jffs2_raw_summary *summary, uint32_t sumsize, 5999641b784SDavid Woodhouse uint32_t *pseudo_random) 600e631ddbaSFerenc Havasi { 601e631ddbaSFerenc Havasi struct jffs2_unknown_node crcnode; 602e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *cache_ref; 6039641b784SDavid Woodhouse int ret, ofs; 604e631ddbaSFerenc Havasi uint32_t crc; 60568270995SDavid Woodhouse int err; 606e631ddbaSFerenc Havasi 60749f11d40SDavid Woodhouse ofs = c->sector_size - sumsize; 608e631ddbaSFerenc Havasi 609733802d9SArtem B. Bityutskiy dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n", 61049f11d40SDavid Woodhouse jeb->offset, jeb->offset + ofs, sumsize); 611e631ddbaSFerenc Havasi 612e631ddbaSFerenc Havasi /* OK, now check for node validity and CRC */ 613e631ddbaSFerenc Havasi crcnode.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 614e631ddbaSFerenc Havasi crcnode.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY); 615e631ddbaSFerenc Havasi crcnode.totlen = summary->totlen; 616e631ddbaSFerenc Havasi crc = crc32(0, &crcnode, sizeof(crcnode)-4); 617e631ddbaSFerenc Havasi 618e631ddbaSFerenc Havasi if (je32_to_cpu(summary->hdr_crc) != crc) { 619733802d9SArtem B. Bityutskiy dbg_summary("Summary node header is corrupt (bad CRC or " 620e631ddbaSFerenc Havasi "no summary at all)\n"); 621e631ddbaSFerenc Havasi goto crc_err; 622e631ddbaSFerenc Havasi } 623e631ddbaSFerenc Havasi 624e631ddbaSFerenc Havasi if (je32_to_cpu(summary->totlen) != sumsize) { 625733802d9SArtem B. Bityutskiy dbg_summary("Summary node is corrupt (wrong erasesize?)\n"); 626e631ddbaSFerenc Havasi goto crc_err; 627e631ddbaSFerenc Havasi } 628e631ddbaSFerenc Havasi 6292bc9764cSFerenc Havasi crc = crc32(0, summary, sizeof(struct jffs2_raw_summary)-8); 630e631ddbaSFerenc Havasi 631e631ddbaSFerenc Havasi if (je32_to_cpu(summary->node_crc) != crc) { 632733802d9SArtem B. Bityutskiy dbg_summary("Summary node is corrupt (bad CRC)\n"); 633e631ddbaSFerenc Havasi goto crc_err; 634e631ddbaSFerenc Havasi } 635e631ddbaSFerenc Havasi 6362bc9764cSFerenc Havasi crc = crc32(0, summary->sum, sumsize - sizeof(struct jffs2_raw_summary)); 637e631ddbaSFerenc Havasi 638e631ddbaSFerenc Havasi if (je32_to_cpu(summary->sum_crc) != crc) { 639733802d9SArtem B. Bityutskiy dbg_summary("Summary node data is corrupt (bad CRC)\n"); 640e631ddbaSFerenc Havasi goto crc_err; 641e631ddbaSFerenc Havasi } 642e631ddbaSFerenc Havasi 643e631ddbaSFerenc Havasi if ( je32_to_cpu(summary->cln_mkr) ) { 644e631ddbaSFerenc Havasi 645733802d9SArtem B. Bityutskiy dbg_summary("Summary : CLEANMARKER node \n"); 646e631ddbaSFerenc Havasi 647e631ddbaSFerenc Havasi if (je32_to_cpu(summary->cln_mkr) != c->cleanmarker_size) { 648733802d9SArtem B. Bityutskiy dbg_summary("CLEANMARKER node has totlen 0x%x != normal 0x%x\n", 649e631ddbaSFerenc Havasi je32_to_cpu(summary->cln_mkr), c->cleanmarker_size); 65068270995SDavid Woodhouse if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr))))) 65168270995SDavid Woodhouse return err; 652e631ddbaSFerenc Havasi } else if (jeb->first_node) { 653733802d9SArtem B. Bityutskiy dbg_summary("CLEANMARKER node not first node in block " 654e631ddbaSFerenc Havasi "(0x%08x)\n", jeb->offset); 65568270995SDavid Woodhouse if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(summary->cln_mkr))))) 65668270995SDavid Woodhouse return err; 657e631ddbaSFerenc Havasi } else { 658e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *marker_ref = jffs2_alloc_raw_node_ref(); 659e631ddbaSFerenc Havasi 660e631ddbaSFerenc Havasi if (!marker_ref) { 661e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for clean marker\n"); 662e631ddbaSFerenc Havasi return -ENOMEM; 663e631ddbaSFerenc Havasi } 664e631ddbaSFerenc Havasi 665e631ddbaSFerenc Havasi marker_ref->flash_offset = jeb->offset | REF_NORMAL; 666f1f9671bSDavid Woodhouse marker_ref->next_in_ino = NULL; 667e631ddbaSFerenc Havasi 668f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, marker_ref, je32_to_cpu(summary->cln_mkr)); 669e631ddbaSFerenc Havasi } 670e631ddbaSFerenc Havasi } 671e631ddbaSFerenc Havasi 672e631ddbaSFerenc Havasi ret = jffs2_sum_process_sum_data(c, jeb, summary, pseudo_random); 6737807ef7bSDavid Woodhouse /* -ENOTRECOVERABLE isn't a fatal error -- it means we should do a full 6747807ef7bSDavid Woodhouse scan of this eraseblock. So return zero */ 6757807ef7bSDavid Woodhouse if (ret == -ENOTRECOVERABLE) 6767807ef7bSDavid Woodhouse return 0; 677e631ddbaSFerenc Havasi if (ret) 6787807ef7bSDavid Woodhouse return ret; /* real error */ 679e631ddbaSFerenc Havasi 680e631ddbaSFerenc Havasi /* for PARANOIA_CHECK */ 68149f11d40SDavid Woodhouse cache_ref = alloc_ref_at(c, jeb, ofs); 682e631ddbaSFerenc Havasi 683e631ddbaSFerenc Havasi if (!cache_ref) { 684e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for cache\n"); 685e631ddbaSFerenc Havasi return -ENOMEM; 686e631ddbaSFerenc Havasi } 687e631ddbaSFerenc Havasi 688e631ddbaSFerenc Havasi cache_ref->next_in_ino = NULL; 68949f11d40SDavid Woodhouse cache_ref->flash_offset |= REF_NORMAL; 690e631ddbaSFerenc Havasi 691f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, cache_ref, sumsize); 692e631ddbaSFerenc Havasi 69349f11d40SDavid Woodhouse if (unlikely(jeb->free_size)) { 69449f11d40SDavid Woodhouse JFFS2_WARNING("Free size 0x%x bytes in eraseblock @0x%08x with summary?\n", 69549f11d40SDavid Woodhouse jeb->free_size, jeb->offset); 696e631ddbaSFerenc Havasi jeb->wasted_size += jeb->free_size; 697e631ddbaSFerenc Havasi c->wasted_size += jeb->free_size; 698e631ddbaSFerenc Havasi c->free_size -= jeb->free_size; 699e631ddbaSFerenc Havasi jeb->free_size = 0; 70049f11d40SDavid Woodhouse } 701e631ddbaSFerenc Havasi 702e631ddbaSFerenc Havasi return jffs2_scan_classify_jeb(c, jeb); 703e631ddbaSFerenc Havasi 704e631ddbaSFerenc Havasi crc_err: 705e631ddbaSFerenc Havasi JFFS2_WARNING("Summary node crc error, skipping summary information.\n"); 706e631ddbaSFerenc Havasi 707e631ddbaSFerenc Havasi return 0; 708e631ddbaSFerenc Havasi } 709e631ddbaSFerenc Havasi 710e631ddbaSFerenc Havasi /* Write summary data to flash - helper function for jffs2_sum_write_sumnode() */ 711e631ddbaSFerenc Havasi 712e631ddbaSFerenc Havasi static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 713e631ddbaSFerenc Havasi uint32_t infosize, uint32_t datasize, int padsize) 714e631ddbaSFerenc Havasi { 7152bc9764cSFerenc Havasi struct jffs2_raw_summary isum; 716e631ddbaSFerenc Havasi union jffs2_sum_mem *temp; 717e631ddbaSFerenc Havasi struct jffs2_sum_marker *sm; 718e631ddbaSFerenc Havasi struct kvec vecs[2]; 719e631ddbaSFerenc Havasi void *wpage; 720e631ddbaSFerenc Havasi int ret; 721e631ddbaSFerenc Havasi size_t retlen; 722e631ddbaSFerenc Havasi 723e631ddbaSFerenc Havasi memset(c->summary->sum_buf, 0xff, datasize); 724e631ddbaSFerenc Havasi memset(&isum, 0, sizeof(isum)); 725e631ddbaSFerenc Havasi 726e631ddbaSFerenc Havasi isum.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 727e631ddbaSFerenc Havasi isum.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY); 728e631ddbaSFerenc Havasi isum.totlen = cpu_to_je32(infosize); 729e631ddbaSFerenc Havasi isum.hdr_crc = cpu_to_je32(crc32(0, &isum, sizeof(struct jffs2_unknown_node) - 4)); 730e631ddbaSFerenc Havasi isum.padded = cpu_to_je32(c->summary->sum_padded); 731e631ddbaSFerenc Havasi isum.cln_mkr = cpu_to_je32(c->cleanmarker_size); 732e631ddbaSFerenc Havasi isum.sum_num = cpu_to_je32(c->summary->sum_num); 733e631ddbaSFerenc Havasi wpage = c->summary->sum_buf; 734e631ddbaSFerenc Havasi 735e631ddbaSFerenc Havasi while (c->summary->sum_num) { 73620ffdcb0SJesper Juhl temp = c->summary->sum_list_head; 737e631ddbaSFerenc Havasi 73820ffdcb0SJesper Juhl switch (je16_to_cpu(temp->u.nodetype)) { 739e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 740e631ddbaSFerenc Havasi struct jffs2_sum_inode_flash *sino_ptr = wpage; 741e631ddbaSFerenc Havasi 74220ffdcb0SJesper Juhl sino_ptr->nodetype = temp->i.nodetype; 74320ffdcb0SJesper Juhl sino_ptr->inode = temp->i.inode; 74420ffdcb0SJesper Juhl sino_ptr->version = temp->i.version; 74520ffdcb0SJesper Juhl sino_ptr->offset = temp->i.offset; 74620ffdcb0SJesper Juhl sino_ptr->totlen = temp->i.totlen; 747e631ddbaSFerenc Havasi 748e631ddbaSFerenc Havasi wpage += JFFS2_SUMMARY_INODE_SIZE; 749e631ddbaSFerenc Havasi 750e631ddbaSFerenc Havasi break; 751e631ddbaSFerenc Havasi } 752e631ddbaSFerenc Havasi 753e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 754e631ddbaSFerenc Havasi struct jffs2_sum_dirent_flash *sdrnt_ptr = wpage; 755e631ddbaSFerenc Havasi 75620ffdcb0SJesper Juhl sdrnt_ptr->nodetype = temp->d.nodetype; 75720ffdcb0SJesper Juhl sdrnt_ptr->totlen = temp->d.totlen; 75820ffdcb0SJesper Juhl sdrnt_ptr->offset = temp->d.offset; 75920ffdcb0SJesper Juhl sdrnt_ptr->pino = temp->d.pino; 76020ffdcb0SJesper Juhl sdrnt_ptr->version = temp->d.version; 76120ffdcb0SJesper Juhl sdrnt_ptr->ino = temp->d.ino; 76220ffdcb0SJesper Juhl sdrnt_ptr->nsize = temp->d.nsize; 76320ffdcb0SJesper Juhl sdrnt_ptr->type = temp->d.type; 764e631ddbaSFerenc Havasi 76520ffdcb0SJesper Juhl memcpy(sdrnt_ptr->name, temp->d.name, 76620ffdcb0SJesper Juhl temp->d.nsize); 767e631ddbaSFerenc Havasi 76820ffdcb0SJesper Juhl wpage += JFFS2_SUMMARY_DIRENT_SIZE(temp->d.nsize); 769e631ddbaSFerenc Havasi 770e631ddbaSFerenc Havasi break; 771e631ddbaSFerenc Havasi } 772aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 773aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XATTR: { 774aa98d7cfSKaiGai Kohei struct jffs2_sum_xattr_flash *sxattr_ptr = wpage; 775e631ddbaSFerenc Havasi 776aa98d7cfSKaiGai Kohei temp = c->summary->sum_list_head; 777aa98d7cfSKaiGai Kohei sxattr_ptr->nodetype = temp->x.nodetype; 778aa98d7cfSKaiGai Kohei sxattr_ptr->xid = temp->x.xid; 779aa98d7cfSKaiGai Kohei sxattr_ptr->version = temp->x.version; 780aa98d7cfSKaiGai Kohei sxattr_ptr->offset = temp->x.offset; 781aa98d7cfSKaiGai Kohei sxattr_ptr->totlen = temp->x.totlen; 782aa98d7cfSKaiGai Kohei 783aa98d7cfSKaiGai Kohei wpage += JFFS2_SUMMARY_XATTR_SIZE; 784aa98d7cfSKaiGai Kohei break; 785aa98d7cfSKaiGai Kohei } 786aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XREF: { 787aa98d7cfSKaiGai Kohei struct jffs2_sum_xref_flash *sxref_ptr = wpage; 788aa98d7cfSKaiGai Kohei 789aa98d7cfSKaiGai Kohei temp = c->summary->sum_list_head; 790aa98d7cfSKaiGai Kohei sxref_ptr->nodetype = temp->r.nodetype; 791aa98d7cfSKaiGai Kohei sxref_ptr->offset = temp->r.offset; 792aa98d7cfSKaiGai Kohei 793aa98d7cfSKaiGai Kohei wpage += JFFS2_SUMMARY_XREF_SIZE; 794aa98d7cfSKaiGai Kohei break; 795aa98d7cfSKaiGai Kohei } 796aa98d7cfSKaiGai Kohei #endif 797e631ddbaSFerenc Havasi default : { 7986171586aSDavid Woodhouse if ((je16_to_cpu(temp->u.nodetype) & JFFS2_COMPAT_MASK) 7996171586aSDavid Woodhouse == JFFS2_FEATURE_RWCOMPAT_COPY) { 8006171586aSDavid Woodhouse dbg_summary("Writing unknown RWCOMPAT_COPY node type %x\n", 8016171586aSDavid Woodhouse je16_to_cpu(temp->u.nodetype)); 8026171586aSDavid Woodhouse jffs2_sum_disable_collecting(c->summary); 8036171586aSDavid Woodhouse } else { 804e631ddbaSFerenc Havasi BUG(); /* unknown node in summary information */ 805e631ddbaSFerenc Havasi } 806e631ddbaSFerenc Havasi } 8076171586aSDavid Woodhouse } 808e631ddbaSFerenc Havasi 80920ffdcb0SJesper Juhl c->summary->sum_list_head = temp->u.next; 810e631ddbaSFerenc Havasi kfree(temp); 811e631ddbaSFerenc Havasi 812e631ddbaSFerenc Havasi c->summary->sum_num--; 813e631ddbaSFerenc Havasi } 814e631ddbaSFerenc Havasi 815e631ddbaSFerenc Havasi jffs2_sum_reset_collected(c->summary); 816e631ddbaSFerenc Havasi 817e631ddbaSFerenc Havasi wpage += padsize; 818e631ddbaSFerenc Havasi 819e631ddbaSFerenc Havasi sm = wpage; 820e631ddbaSFerenc Havasi sm->offset = cpu_to_je32(c->sector_size - jeb->free_size); 821e631ddbaSFerenc Havasi sm->magic = cpu_to_je32(JFFS2_SUM_MAGIC); 822e631ddbaSFerenc Havasi 823e631ddbaSFerenc Havasi isum.sum_crc = cpu_to_je32(crc32(0, c->summary->sum_buf, datasize)); 824e631ddbaSFerenc Havasi isum.node_crc = cpu_to_je32(crc32(0, &isum, sizeof(isum) - 8)); 825e631ddbaSFerenc Havasi 826e631ddbaSFerenc Havasi vecs[0].iov_base = &isum; 827e631ddbaSFerenc Havasi vecs[0].iov_len = sizeof(isum); 828e631ddbaSFerenc Havasi vecs[1].iov_base = c->summary->sum_buf; 829e631ddbaSFerenc Havasi vecs[1].iov_len = datasize; 830e631ddbaSFerenc Havasi 831733802d9SArtem B. Bityutskiy dbg_summary("JFFS2: writing out data to flash to pos : 0x%08x\n", 832e631ddbaSFerenc Havasi jeb->offset + c->sector_size - jeb->free_size); 833e631ddbaSFerenc Havasi 834e631ddbaSFerenc Havasi spin_unlock(&c->erase_completion_lock); 835e631ddbaSFerenc Havasi ret = jffs2_flash_writev(c, vecs, 2, jeb->offset + c->sector_size - 836e631ddbaSFerenc Havasi jeb->free_size, &retlen, 0); 837e631ddbaSFerenc Havasi spin_lock(&c->erase_completion_lock); 838e631ddbaSFerenc Havasi 839e631ddbaSFerenc Havasi 840e631ddbaSFerenc Havasi if (ret || (retlen != infosize)) { 841c41ff6e5SDavid Woodhouse JFFS2_WARNING("Write of %u bytes at 0x%08x failed. returned %d, retlen %zd\n", 842e631ddbaSFerenc Havasi infosize, jeb->offset + c->sector_size - jeb->free_size, ret, retlen); 843e631ddbaSFerenc Havasi 844e631ddbaSFerenc Havasi c->summary->sum_size = JFFS2_SUMMARY_NOSUM_SIZE; 84568270995SDavid Woodhouse jffs2_scan_dirty_space(c, jeb, infosize); 846e631ddbaSFerenc Havasi 847e631ddbaSFerenc Havasi return 1; 848e631ddbaSFerenc Havasi } 849e631ddbaSFerenc Havasi 850e631ddbaSFerenc Havasi return 0; 851e631ddbaSFerenc Havasi } 852e631ddbaSFerenc Havasi 853e631ddbaSFerenc Havasi /* Write out summary information - called from jffs2_do_reserve_space */ 854e631ddbaSFerenc Havasi 855e631ddbaSFerenc Havasi int jffs2_sum_write_sumnode(struct jffs2_sb_info *c) 856e631ddbaSFerenc Havasi { 857e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *summary_ref; 858e631ddbaSFerenc Havasi int datasize, infosize, padsize, ret; 859e631ddbaSFerenc Havasi struct jffs2_eraseblock *jeb; 860e631ddbaSFerenc Havasi 861733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 862e631ddbaSFerenc Havasi 863e631ddbaSFerenc Havasi jeb = c->nextblock; 864e631ddbaSFerenc Havasi 865e631ddbaSFerenc Havasi if (!c->summary->sum_num || !c->summary->sum_list_head) { 866e631ddbaSFerenc Havasi JFFS2_WARNING("Empty summary info!!!\n"); 867e631ddbaSFerenc Havasi BUG(); 868e631ddbaSFerenc Havasi } 869e631ddbaSFerenc Havasi 870e631ddbaSFerenc Havasi datasize = c->summary->sum_size + sizeof(struct jffs2_sum_marker); 8712bc9764cSFerenc Havasi infosize = sizeof(struct jffs2_raw_summary) + datasize; 872e631ddbaSFerenc Havasi padsize = jeb->free_size - infosize; 873e631ddbaSFerenc Havasi infosize += padsize; 874e631ddbaSFerenc Havasi datasize += padsize; 875e631ddbaSFerenc Havasi 876e631ddbaSFerenc Havasi /* Is there enough space for summary? */ 877e631ddbaSFerenc Havasi if (padsize < 0) { 878e631ddbaSFerenc Havasi /* don't try to write out summary for this jeb */ 879e631ddbaSFerenc Havasi jffs2_sum_disable_collecting(c->summary); 880e631ddbaSFerenc Havasi 881e631ddbaSFerenc Havasi JFFS2_WARNING("Not enough space for summary, padsize = %d\n", padsize); 882e631ddbaSFerenc Havasi return 0; 883e631ddbaSFerenc Havasi } 884e631ddbaSFerenc Havasi 885e631ddbaSFerenc Havasi ret = jffs2_sum_write_data(c, jeb, infosize, datasize, padsize); 886e631ddbaSFerenc Havasi if (ret) 887e631ddbaSFerenc Havasi return 0; /* can't write out summary, block is marked as NOSUM_SIZE */ 888e631ddbaSFerenc Havasi 889e631ddbaSFerenc Havasi /* for ACCT_PARANOIA_CHECK */ 890e631ddbaSFerenc Havasi spin_unlock(&c->erase_completion_lock); 891e631ddbaSFerenc Havasi summary_ref = jffs2_alloc_raw_node_ref(); 892e631ddbaSFerenc Havasi spin_lock(&c->erase_completion_lock); 893e631ddbaSFerenc Havasi 894e631ddbaSFerenc Havasi if (!summary_ref) { 895e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for summary\n"); 896e631ddbaSFerenc Havasi return -ENOMEM; 897e631ddbaSFerenc Havasi } 898e631ddbaSFerenc Havasi 899e631ddbaSFerenc Havasi summary_ref->next_in_ino = NULL; 900e631ddbaSFerenc Havasi summary_ref->flash_offset = (jeb->offset + c->sector_size - jeb->free_size) | REF_NORMAL; 901e631ddbaSFerenc Havasi 902f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, summary_ref, infosize); 903e631ddbaSFerenc Havasi 904e631ddbaSFerenc Havasi return 0; 905e631ddbaSFerenc Havasi } 906