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 372e631ddbaSFerenc Havasi 373e631ddbaSFerenc Havasi /* Process the stored summary information - helper function for jffs2_sum_scan_sumnode() */ 374e631ddbaSFerenc Havasi 375e631ddbaSFerenc Havasi static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 3762bc9764cSFerenc Havasi struct jffs2_raw_summary *summary, uint32_t *pseudo_random) 377e631ddbaSFerenc Havasi { 378e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *raw; 379e631ddbaSFerenc Havasi struct jffs2_inode_cache *ic; 380e631ddbaSFerenc Havasi struct jffs2_full_dirent *fd; 381e631ddbaSFerenc Havasi void *sp; 382e631ddbaSFerenc Havasi int i, ino; 383e631ddbaSFerenc Havasi 384e631ddbaSFerenc Havasi sp = summary->sum; 385e631ddbaSFerenc Havasi 386e631ddbaSFerenc Havasi for (i=0; i<je32_to_cpu(summary->sum_num); i++) { 387733802d9SArtem B. Bityutskiy dbg_summary("processing summary index %d\n", i); 388e631ddbaSFerenc Havasi 389e631ddbaSFerenc Havasi switch (je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype)) { 390e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 391e631ddbaSFerenc Havasi struct jffs2_sum_inode_flash *spi; 392e631ddbaSFerenc Havasi spi = sp; 393e631ddbaSFerenc Havasi 394e631ddbaSFerenc Havasi ino = je32_to_cpu(spi->inode); 395e631ddbaSFerenc Havasi 396733802d9SArtem B. Bityutskiy dbg_summary("Inode at 0x%08x\n", 397e631ddbaSFerenc Havasi jeb->offset + je32_to_cpu(spi->offset)); 398e631ddbaSFerenc Havasi 399e631ddbaSFerenc Havasi raw = jffs2_alloc_raw_node_ref(); 400e631ddbaSFerenc Havasi if (!raw) { 401e631ddbaSFerenc Havasi JFFS2_NOTICE("allocation of node reference failed\n"); 402e631ddbaSFerenc Havasi return -ENOMEM; 403e631ddbaSFerenc Havasi } 404e631ddbaSFerenc Havasi 405e631ddbaSFerenc Havasi ic = jffs2_scan_make_ino_cache(c, ino); 406e631ddbaSFerenc Havasi if (!ic) { 407e631ddbaSFerenc Havasi JFFS2_NOTICE("scan_make_ino_cache failed\n"); 408e631ddbaSFerenc Havasi jffs2_free_raw_node_ref(raw); 409e631ddbaSFerenc Havasi return -ENOMEM; 410e631ddbaSFerenc Havasi } 411e631ddbaSFerenc Havasi 412e631ddbaSFerenc Havasi raw->flash_offset = (jeb->offset + je32_to_cpu(spi->offset)) | REF_UNCHECKED; 413f1f9671bSDavid Woodhouse 414e631ddbaSFerenc Havasi raw->next_in_ino = ic->nodes; 415e631ddbaSFerenc Havasi ic->nodes = raw; 416e631ddbaSFerenc Havasi 417f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spi->totlen))); 418f1f9671bSDavid Woodhouse 419f1f9671bSDavid Woodhouse *pseudo_random += je32_to_cpu(spi->version); 420e631ddbaSFerenc Havasi 421e631ddbaSFerenc Havasi sp += JFFS2_SUMMARY_INODE_SIZE; 422e631ddbaSFerenc Havasi 423e631ddbaSFerenc Havasi break; 424e631ddbaSFerenc Havasi } 425e631ddbaSFerenc Havasi 426e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 427e631ddbaSFerenc Havasi struct jffs2_sum_dirent_flash *spd; 428e631ddbaSFerenc Havasi spd = sp; 429e631ddbaSFerenc Havasi 430733802d9SArtem B. Bityutskiy dbg_summary("Dirent at 0x%08x\n", 431e631ddbaSFerenc Havasi jeb->offset + je32_to_cpu(spd->offset)); 432e631ddbaSFerenc Havasi 433e631ddbaSFerenc Havasi fd = jffs2_alloc_full_dirent(spd->nsize+1); 4349641b784SDavid Woodhouse if (!fd) 435e631ddbaSFerenc Havasi return -ENOMEM; 436e631ddbaSFerenc Havasi 437e631ddbaSFerenc Havasi memcpy(&fd->name, spd->name, spd->nsize); 438e631ddbaSFerenc Havasi fd->name[spd->nsize] = 0; 439e631ddbaSFerenc Havasi 440e631ddbaSFerenc Havasi raw = jffs2_alloc_raw_node_ref(); 441e631ddbaSFerenc Havasi if (!raw) { 442e631ddbaSFerenc Havasi jffs2_free_full_dirent(fd); 443e631ddbaSFerenc Havasi JFFS2_NOTICE("allocation of node reference failed\n"); 444e631ddbaSFerenc Havasi return -ENOMEM; 445e631ddbaSFerenc Havasi } 446e631ddbaSFerenc Havasi 447e631ddbaSFerenc Havasi ic = jffs2_scan_make_ino_cache(c, je32_to_cpu(spd->pino)); 448e631ddbaSFerenc Havasi if (!ic) { 449e631ddbaSFerenc Havasi jffs2_free_full_dirent(fd); 450e631ddbaSFerenc Havasi jffs2_free_raw_node_ref(raw); 451e631ddbaSFerenc Havasi return -ENOMEM; 452e631ddbaSFerenc Havasi } 453e631ddbaSFerenc Havasi 454e631ddbaSFerenc Havasi raw->flash_offset = (jeb->offset + je32_to_cpu(spd->offset)) | REF_PRISTINE; 455e631ddbaSFerenc Havasi raw->next_in_ino = ic->nodes; 456e631ddbaSFerenc Havasi ic->nodes = raw; 457f1f9671bSDavid Woodhouse 458f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spd->totlen))); 459e631ddbaSFerenc Havasi 460e631ddbaSFerenc Havasi fd->raw = raw; 461e631ddbaSFerenc Havasi fd->next = NULL; 462e631ddbaSFerenc Havasi fd->version = je32_to_cpu(spd->version); 463e631ddbaSFerenc Havasi fd->ino = je32_to_cpu(spd->ino); 464e631ddbaSFerenc Havasi fd->nhash = full_name_hash(fd->name, spd->nsize); 465e631ddbaSFerenc Havasi fd->type = spd->type; 466f1f9671bSDavid Woodhouse 467e631ddbaSFerenc Havasi jffs2_add_fd_to_list(c, fd, &ic->scan_dents); 468e631ddbaSFerenc Havasi 469e631ddbaSFerenc Havasi *pseudo_random += je32_to_cpu(spd->version); 470e631ddbaSFerenc Havasi 471e631ddbaSFerenc Havasi sp += JFFS2_SUMMARY_DIRENT_SIZE(spd->nsize); 472e631ddbaSFerenc Havasi 473e631ddbaSFerenc Havasi break; 474e631ddbaSFerenc Havasi } 475aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 476aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XATTR: { 477aa98d7cfSKaiGai Kohei struct jffs2_xattr_datum *xd; 478aa98d7cfSKaiGai Kohei struct jffs2_sum_xattr_flash *spx; 479aa98d7cfSKaiGai Kohei uint32_t ofs; 480e631ddbaSFerenc Havasi 481aa98d7cfSKaiGai Kohei spx = (struct jffs2_sum_xattr_flash *)sp; 482aa98d7cfSKaiGai Kohei ofs = jeb->offset + je32_to_cpu(spx->offset); 483aa98d7cfSKaiGai Kohei dbg_summary("xattr at %#08x (xid=%u, version=%u)\n", ofs, 484aa98d7cfSKaiGai Kohei je32_to_cpu(spx->xid), je32_to_cpu(spx->version)); 485aa98d7cfSKaiGai Kohei raw = jffs2_alloc_raw_node_ref(); 486aa98d7cfSKaiGai Kohei if (!raw) { 487aa98d7cfSKaiGai Kohei JFFS2_NOTICE("allocation of node reference failed\n"); 488aa98d7cfSKaiGai Kohei kfree(summary); 489aa98d7cfSKaiGai Kohei return -ENOMEM; 490aa98d7cfSKaiGai Kohei } 491aa98d7cfSKaiGai Kohei xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid), 492aa98d7cfSKaiGai Kohei je32_to_cpu(spx->version)); 493aa98d7cfSKaiGai Kohei if (IS_ERR(xd)) { 494aa98d7cfSKaiGai Kohei jffs2_free_raw_node_ref(raw); 495c8708a92SKaiGai Kohei if (PTR_ERR(xd) == -EEXIST) { 496c8708a92SKaiGai Kohei /* a newer version of xd exists */ 497c8708a92SKaiGai Kohei DIRTY_SPACE(je32_to_cpu(spx->totlen)); 498c8708a92SKaiGai Kohei sp += JFFS2_SUMMARY_XATTR_SIZE; 499c8708a92SKaiGai Kohei break; 500c8708a92SKaiGai Kohei } 501c8708a92SKaiGai Kohei JFFS2_NOTICE("allocation of xattr_datum failed\n"); 502aa98d7cfSKaiGai Kohei kfree(summary); 503aa98d7cfSKaiGai Kohei return PTR_ERR(xd); 504aa98d7cfSKaiGai Kohei } 505aa98d7cfSKaiGai Kohei xd->node = raw; 506aa98d7cfSKaiGai Kohei 507aa98d7cfSKaiGai Kohei raw->flash_offset = ofs | REF_UNCHECKED; 508aa98d7cfSKaiGai Kohei raw->next_in_ino = (void *)xd; 509f1f9671bSDavid Woodhouse 510f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(je32_to_cpu(spx->totlen))); 511aa98d7cfSKaiGai Kohei 512aa98d7cfSKaiGai Kohei *pseudo_random += je32_to_cpu(spx->xid); 513aa98d7cfSKaiGai Kohei sp += JFFS2_SUMMARY_XATTR_SIZE; 514aa98d7cfSKaiGai Kohei 515aa98d7cfSKaiGai Kohei break; 516aa98d7cfSKaiGai Kohei } 517aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XREF: { 518aa98d7cfSKaiGai Kohei struct jffs2_xattr_ref *ref; 519aa98d7cfSKaiGai Kohei struct jffs2_sum_xref_flash *spr; 520aa98d7cfSKaiGai Kohei uint32_t ofs; 521aa98d7cfSKaiGai Kohei 522aa98d7cfSKaiGai Kohei spr = (struct jffs2_sum_xref_flash *)sp; 523aa98d7cfSKaiGai Kohei ofs = jeb->offset + je32_to_cpu(spr->offset); 524aa98d7cfSKaiGai Kohei dbg_summary("xref at %#08x (xid=%u, ino=%u)\n", ofs, 525aa98d7cfSKaiGai Kohei je32_to_cpu(spr->xid), je32_to_cpu(spr->ino)); 526aa98d7cfSKaiGai Kohei raw = jffs2_alloc_raw_node_ref(); 527aa98d7cfSKaiGai Kohei if (!raw) { 528aa98d7cfSKaiGai Kohei JFFS2_NOTICE("allocation of node reference failed\n"); 529aa98d7cfSKaiGai Kohei kfree(summary); 530aa98d7cfSKaiGai Kohei return -ENOMEM; 531aa98d7cfSKaiGai Kohei } 532aa98d7cfSKaiGai Kohei ref = jffs2_alloc_xattr_ref(); 533aa98d7cfSKaiGai Kohei if (!ref) { 534aa98d7cfSKaiGai Kohei JFFS2_NOTICE("allocation of xattr_datum failed\n"); 535aa98d7cfSKaiGai Kohei jffs2_free_raw_node_ref(raw); 536aa98d7cfSKaiGai Kohei kfree(summary); 537aa98d7cfSKaiGai Kohei return -ENOMEM; 538aa98d7cfSKaiGai Kohei } 539aa98d7cfSKaiGai Kohei ref->ino = 0xfffffffe; 540aa98d7cfSKaiGai Kohei ref->xid = 0xfffffffd; 541aa98d7cfSKaiGai Kohei ref->node = raw; 5428f2b6f49SKaiGai Kohei ref->next = c->xref_temp; 5438f2b6f49SKaiGai Kohei c->xref_temp = ref; 544aa98d7cfSKaiGai Kohei 545aa98d7cfSKaiGai Kohei raw->flash_offset = ofs | REF_UNCHECKED; 546aa98d7cfSKaiGai Kohei raw->next_in_ino = (void *)ref; 547aa98d7cfSKaiGai Kohei 548f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, raw, PAD(sizeof(struct jffs2_raw_xref))); 549f1f9671bSDavid Woodhouse 550aa98d7cfSKaiGai Kohei *pseudo_random += ofs; 551aa98d7cfSKaiGai Kohei sp += JFFS2_SUMMARY_XREF_SIZE; 552aa98d7cfSKaiGai Kohei 553aa98d7cfSKaiGai Kohei break; 554aa98d7cfSKaiGai Kohei } 555aa98d7cfSKaiGai Kohei #endif 556e631ddbaSFerenc Havasi default : { 557aa98d7cfSKaiGai Kohei printk("nodetype = %#04x\n",je16_to_cpu(((struct jffs2_sum_unknown_flash *)sp)->nodetype)); 558e631ddbaSFerenc Havasi JFFS2_WARNING("Unsupported node type found in summary! Exiting..."); 559e631ddbaSFerenc Havasi return -EIO; 560e631ddbaSFerenc Havasi } 561e631ddbaSFerenc Havasi } 562e631ddbaSFerenc Havasi } 563e631ddbaSFerenc Havasi 564e631ddbaSFerenc Havasi return 0; 565e631ddbaSFerenc Havasi } 566e631ddbaSFerenc Havasi 567e631ddbaSFerenc Havasi /* Process the summary node - called from jffs2_scan_eraseblock() */ 568e631ddbaSFerenc Havasi int jffs2_sum_scan_sumnode(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 5699641b784SDavid Woodhouse struct jffs2_raw_summary *summary, uint32_t sumsize, 5709641b784SDavid Woodhouse uint32_t *pseudo_random) 571e631ddbaSFerenc Havasi { 572e631ddbaSFerenc Havasi struct jffs2_unknown_node crcnode; 573e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *cache_ref; 5749641b784SDavid Woodhouse int ret, ofs; 575e631ddbaSFerenc Havasi uint32_t crc; 576e631ddbaSFerenc Havasi 5779641b784SDavid Woodhouse ofs = jeb->offset + c->sector_size - sumsize; 578e631ddbaSFerenc Havasi 579733802d9SArtem B. Bityutskiy dbg_summary("summary found for 0x%08x at 0x%08x (0x%x bytes)\n", 580e631ddbaSFerenc Havasi jeb->offset, ofs, sumsize); 581e631ddbaSFerenc Havasi 582e631ddbaSFerenc Havasi /* OK, now check for node validity and CRC */ 583e631ddbaSFerenc Havasi crcnode.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 584e631ddbaSFerenc Havasi crcnode.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY); 585e631ddbaSFerenc Havasi crcnode.totlen = summary->totlen; 586e631ddbaSFerenc Havasi crc = crc32(0, &crcnode, sizeof(crcnode)-4); 587e631ddbaSFerenc Havasi 588e631ddbaSFerenc Havasi if (je32_to_cpu(summary->hdr_crc) != crc) { 589733802d9SArtem B. Bityutskiy dbg_summary("Summary node header is corrupt (bad CRC or " 590e631ddbaSFerenc Havasi "no summary at all)\n"); 591e631ddbaSFerenc Havasi goto crc_err; 592e631ddbaSFerenc Havasi } 593e631ddbaSFerenc Havasi 594e631ddbaSFerenc Havasi if (je32_to_cpu(summary->totlen) != sumsize) { 595733802d9SArtem B. Bityutskiy dbg_summary("Summary node is corrupt (wrong erasesize?)\n"); 596e631ddbaSFerenc Havasi goto crc_err; 597e631ddbaSFerenc Havasi } 598e631ddbaSFerenc Havasi 5992bc9764cSFerenc Havasi crc = crc32(0, summary, sizeof(struct jffs2_raw_summary)-8); 600e631ddbaSFerenc Havasi 601e631ddbaSFerenc Havasi if (je32_to_cpu(summary->node_crc) != crc) { 602733802d9SArtem B. Bityutskiy dbg_summary("Summary node is corrupt (bad CRC)\n"); 603e631ddbaSFerenc Havasi goto crc_err; 604e631ddbaSFerenc Havasi } 605e631ddbaSFerenc Havasi 6062bc9764cSFerenc Havasi crc = crc32(0, summary->sum, sumsize - sizeof(struct jffs2_raw_summary)); 607e631ddbaSFerenc Havasi 608e631ddbaSFerenc Havasi if (je32_to_cpu(summary->sum_crc) != crc) { 609733802d9SArtem B. Bityutskiy dbg_summary("Summary node data is corrupt (bad CRC)\n"); 610e631ddbaSFerenc Havasi goto crc_err; 611e631ddbaSFerenc Havasi } 612e631ddbaSFerenc Havasi 613e631ddbaSFerenc Havasi if ( je32_to_cpu(summary->cln_mkr) ) { 614e631ddbaSFerenc Havasi 615733802d9SArtem B. Bityutskiy dbg_summary("Summary : CLEANMARKER node \n"); 616e631ddbaSFerenc Havasi 617e631ddbaSFerenc Havasi if (je32_to_cpu(summary->cln_mkr) != c->cleanmarker_size) { 618733802d9SArtem B. Bityutskiy dbg_summary("CLEANMARKER node has totlen 0x%x != normal 0x%x\n", 619e631ddbaSFerenc Havasi je32_to_cpu(summary->cln_mkr), c->cleanmarker_size); 620fb9fbbccSDavid Woodhouse DIRTY_SPACE(PAD(je32_to_cpu(summary->cln_mkr))); 621e631ddbaSFerenc Havasi } else if (jeb->first_node) { 622733802d9SArtem B. Bityutskiy dbg_summary("CLEANMARKER node not first node in block " 623e631ddbaSFerenc Havasi "(0x%08x)\n", jeb->offset); 624fb9fbbccSDavid Woodhouse DIRTY_SPACE(PAD(je32_to_cpu(summary->cln_mkr))); 625e631ddbaSFerenc Havasi } else { 626e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *marker_ref = jffs2_alloc_raw_node_ref(); 627e631ddbaSFerenc Havasi 628e631ddbaSFerenc Havasi if (!marker_ref) { 629e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for clean marker\n"); 630e631ddbaSFerenc Havasi return -ENOMEM; 631e631ddbaSFerenc Havasi } 632e631ddbaSFerenc Havasi 633e631ddbaSFerenc Havasi marker_ref->flash_offset = jeb->offset | REF_NORMAL; 634f1f9671bSDavid Woodhouse marker_ref->next_in_ino = NULL; 635e631ddbaSFerenc Havasi 636f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, marker_ref, je32_to_cpu(summary->cln_mkr)); 637e631ddbaSFerenc Havasi } 638e631ddbaSFerenc Havasi } 639e631ddbaSFerenc Havasi 640e631ddbaSFerenc Havasi if (je32_to_cpu(summary->padded)) { 641e631ddbaSFerenc Havasi DIRTY_SPACE(je32_to_cpu(summary->padded)); 642e631ddbaSFerenc Havasi } 643e631ddbaSFerenc Havasi 644e631ddbaSFerenc Havasi ret = jffs2_sum_process_sum_data(c, jeb, summary, pseudo_random); 645e631ddbaSFerenc Havasi if (ret) 646e631ddbaSFerenc Havasi return ret; 647e631ddbaSFerenc Havasi 648e631ddbaSFerenc Havasi /* for PARANOIA_CHECK */ 649e631ddbaSFerenc Havasi cache_ref = jffs2_alloc_raw_node_ref(); 650e631ddbaSFerenc Havasi 651e631ddbaSFerenc Havasi if (!cache_ref) { 652e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for cache\n"); 653e631ddbaSFerenc Havasi return -ENOMEM; 654e631ddbaSFerenc Havasi } 655e631ddbaSFerenc Havasi 656e631ddbaSFerenc Havasi cache_ref->next_in_ino = NULL; 657e631ddbaSFerenc Havasi cache_ref->next_phys = NULL; 658e631ddbaSFerenc Havasi cache_ref->flash_offset = ofs | REF_NORMAL; 659e631ddbaSFerenc Havasi 660f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, cache_ref, sumsize); 661e631ddbaSFerenc Havasi 662e631ddbaSFerenc Havasi jeb->wasted_size += jeb->free_size; 663e631ddbaSFerenc Havasi c->wasted_size += jeb->free_size; 664e631ddbaSFerenc Havasi c->free_size -= jeb->free_size; 665e631ddbaSFerenc Havasi jeb->free_size = 0; 666e631ddbaSFerenc Havasi 667e631ddbaSFerenc Havasi return jffs2_scan_classify_jeb(c, jeb); 668e631ddbaSFerenc Havasi 669e631ddbaSFerenc Havasi crc_err: 670e631ddbaSFerenc Havasi JFFS2_WARNING("Summary node crc error, skipping summary information.\n"); 671e631ddbaSFerenc Havasi 672e631ddbaSFerenc Havasi return 0; 673e631ddbaSFerenc Havasi } 674e631ddbaSFerenc Havasi 675e631ddbaSFerenc Havasi /* Write summary data to flash - helper function for jffs2_sum_write_sumnode() */ 676e631ddbaSFerenc Havasi 677e631ddbaSFerenc Havasi static int jffs2_sum_write_data(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb, 678e631ddbaSFerenc Havasi uint32_t infosize, uint32_t datasize, int padsize) 679e631ddbaSFerenc Havasi { 6802bc9764cSFerenc Havasi struct jffs2_raw_summary isum; 681e631ddbaSFerenc Havasi union jffs2_sum_mem *temp; 682e631ddbaSFerenc Havasi struct jffs2_sum_marker *sm; 683e631ddbaSFerenc Havasi struct kvec vecs[2]; 684e631ddbaSFerenc Havasi void *wpage; 685e631ddbaSFerenc Havasi int ret; 686e631ddbaSFerenc Havasi size_t retlen; 687e631ddbaSFerenc Havasi 688e631ddbaSFerenc Havasi memset(c->summary->sum_buf, 0xff, datasize); 689e631ddbaSFerenc Havasi memset(&isum, 0, sizeof(isum)); 690e631ddbaSFerenc Havasi 691e631ddbaSFerenc Havasi isum.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); 692e631ddbaSFerenc Havasi isum.nodetype = cpu_to_je16(JFFS2_NODETYPE_SUMMARY); 693e631ddbaSFerenc Havasi isum.totlen = cpu_to_je32(infosize); 694e631ddbaSFerenc Havasi isum.hdr_crc = cpu_to_je32(crc32(0, &isum, sizeof(struct jffs2_unknown_node) - 4)); 695e631ddbaSFerenc Havasi isum.padded = cpu_to_je32(c->summary->sum_padded); 696e631ddbaSFerenc Havasi isum.cln_mkr = cpu_to_je32(c->cleanmarker_size); 697e631ddbaSFerenc Havasi isum.sum_num = cpu_to_je32(c->summary->sum_num); 698e631ddbaSFerenc Havasi wpage = c->summary->sum_buf; 699e631ddbaSFerenc Havasi 700e631ddbaSFerenc Havasi while (c->summary->sum_num) { 70120ffdcb0SJesper Juhl temp = c->summary->sum_list_head; 702e631ddbaSFerenc Havasi 70320ffdcb0SJesper Juhl switch (je16_to_cpu(temp->u.nodetype)) { 704e631ddbaSFerenc Havasi case JFFS2_NODETYPE_INODE: { 705e631ddbaSFerenc Havasi struct jffs2_sum_inode_flash *sino_ptr = wpage; 706e631ddbaSFerenc Havasi 70720ffdcb0SJesper Juhl sino_ptr->nodetype = temp->i.nodetype; 70820ffdcb0SJesper Juhl sino_ptr->inode = temp->i.inode; 70920ffdcb0SJesper Juhl sino_ptr->version = temp->i.version; 71020ffdcb0SJesper Juhl sino_ptr->offset = temp->i.offset; 71120ffdcb0SJesper Juhl sino_ptr->totlen = temp->i.totlen; 712e631ddbaSFerenc Havasi 713e631ddbaSFerenc Havasi wpage += JFFS2_SUMMARY_INODE_SIZE; 714e631ddbaSFerenc Havasi 715e631ddbaSFerenc Havasi break; 716e631ddbaSFerenc Havasi } 717e631ddbaSFerenc Havasi 718e631ddbaSFerenc Havasi case JFFS2_NODETYPE_DIRENT: { 719e631ddbaSFerenc Havasi struct jffs2_sum_dirent_flash *sdrnt_ptr = wpage; 720e631ddbaSFerenc Havasi 72120ffdcb0SJesper Juhl sdrnt_ptr->nodetype = temp->d.nodetype; 72220ffdcb0SJesper Juhl sdrnt_ptr->totlen = temp->d.totlen; 72320ffdcb0SJesper Juhl sdrnt_ptr->offset = temp->d.offset; 72420ffdcb0SJesper Juhl sdrnt_ptr->pino = temp->d.pino; 72520ffdcb0SJesper Juhl sdrnt_ptr->version = temp->d.version; 72620ffdcb0SJesper Juhl sdrnt_ptr->ino = temp->d.ino; 72720ffdcb0SJesper Juhl sdrnt_ptr->nsize = temp->d.nsize; 72820ffdcb0SJesper Juhl sdrnt_ptr->type = temp->d.type; 729e631ddbaSFerenc Havasi 73020ffdcb0SJesper Juhl memcpy(sdrnt_ptr->name, temp->d.name, 73120ffdcb0SJesper Juhl temp->d.nsize); 732e631ddbaSFerenc Havasi 73320ffdcb0SJesper Juhl wpage += JFFS2_SUMMARY_DIRENT_SIZE(temp->d.nsize); 734e631ddbaSFerenc Havasi 735e631ddbaSFerenc Havasi break; 736e631ddbaSFerenc Havasi } 737aa98d7cfSKaiGai Kohei #ifdef CONFIG_JFFS2_FS_XATTR 738aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XATTR: { 739aa98d7cfSKaiGai Kohei struct jffs2_sum_xattr_flash *sxattr_ptr = wpage; 740e631ddbaSFerenc Havasi 741aa98d7cfSKaiGai Kohei temp = c->summary->sum_list_head; 742aa98d7cfSKaiGai Kohei sxattr_ptr->nodetype = temp->x.nodetype; 743aa98d7cfSKaiGai Kohei sxattr_ptr->xid = temp->x.xid; 744aa98d7cfSKaiGai Kohei sxattr_ptr->version = temp->x.version; 745aa98d7cfSKaiGai Kohei sxattr_ptr->offset = temp->x.offset; 746aa98d7cfSKaiGai Kohei sxattr_ptr->totlen = temp->x.totlen; 747aa98d7cfSKaiGai Kohei 748aa98d7cfSKaiGai Kohei wpage += JFFS2_SUMMARY_XATTR_SIZE; 749aa98d7cfSKaiGai Kohei break; 750aa98d7cfSKaiGai Kohei } 751aa98d7cfSKaiGai Kohei case JFFS2_NODETYPE_XREF: { 752aa98d7cfSKaiGai Kohei struct jffs2_sum_xref_flash *sxref_ptr = wpage; 753aa98d7cfSKaiGai Kohei 754aa98d7cfSKaiGai Kohei temp = c->summary->sum_list_head; 755aa98d7cfSKaiGai Kohei sxref_ptr->nodetype = temp->r.nodetype; 756aa98d7cfSKaiGai Kohei sxref_ptr->offset = temp->r.offset; 757aa98d7cfSKaiGai Kohei 758aa98d7cfSKaiGai Kohei wpage += JFFS2_SUMMARY_XREF_SIZE; 759aa98d7cfSKaiGai Kohei break; 760aa98d7cfSKaiGai Kohei } 761aa98d7cfSKaiGai Kohei #endif 762e631ddbaSFerenc Havasi default : { 763e631ddbaSFerenc Havasi BUG(); /* unknown node in summary information */ 764e631ddbaSFerenc Havasi } 765e631ddbaSFerenc Havasi } 766e631ddbaSFerenc Havasi 76720ffdcb0SJesper Juhl c->summary->sum_list_head = temp->u.next; 768e631ddbaSFerenc Havasi kfree(temp); 769e631ddbaSFerenc Havasi 770e631ddbaSFerenc Havasi c->summary->sum_num--; 771e631ddbaSFerenc Havasi } 772e631ddbaSFerenc Havasi 773e631ddbaSFerenc Havasi jffs2_sum_reset_collected(c->summary); 774e631ddbaSFerenc Havasi 775e631ddbaSFerenc Havasi wpage += padsize; 776e631ddbaSFerenc Havasi 777e631ddbaSFerenc Havasi sm = wpage; 778e631ddbaSFerenc Havasi sm->offset = cpu_to_je32(c->sector_size - jeb->free_size); 779e631ddbaSFerenc Havasi sm->magic = cpu_to_je32(JFFS2_SUM_MAGIC); 780e631ddbaSFerenc Havasi 781e631ddbaSFerenc Havasi isum.sum_crc = cpu_to_je32(crc32(0, c->summary->sum_buf, datasize)); 782e631ddbaSFerenc Havasi isum.node_crc = cpu_to_je32(crc32(0, &isum, sizeof(isum) - 8)); 783e631ddbaSFerenc Havasi 784e631ddbaSFerenc Havasi vecs[0].iov_base = &isum; 785e631ddbaSFerenc Havasi vecs[0].iov_len = sizeof(isum); 786e631ddbaSFerenc Havasi vecs[1].iov_base = c->summary->sum_buf; 787e631ddbaSFerenc Havasi vecs[1].iov_len = datasize; 788e631ddbaSFerenc Havasi 789733802d9SArtem B. Bityutskiy dbg_summary("JFFS2: writing out data to flash to pos : 0x%08x\n", 790e631ddbaSFerenc Havasi jeb->offset + c->sector_size - jeb->free_size); 791e631ddbaSFerenc Havasi 792e631ddbaSFerenc Havasi spin_unlock(&c->erase_completion_lock); 793e631ddbaSFerenc Havasi ret = jffs2_flash_writev(c, vecs, 2, jeb->offset + c->sector_size - 794e631ddbaSFerenc Havasi jeb->free_size, &retlen, 0); 795e631ddbaSFerenc Havasi spin_lock(&c->erase_completion_lock); 796e631ddbaSFerenc Havasi 797e631ddbaSFerenc Havasi 798e631ddbaSFerenc Havasi if (ret || (retlen != infosize)) { 799c41ff6e5SDavid Woodhouse JFFS2_WARNING("Write of %u bytes at 0x%08x failed. returned %d, retlen %zd\n", 800e631ddbaSFerenc Havasi infosize, jeb->offset + c->sector_size - jeb->free_size, ret, retlen); 801e631ddbaSFerenc Havasi 802e631ddbaSFerenc Havasi c->summary->sum_size = JFFS2_SUMMARY_NOSUM_SIZE; 803fb9fbbccSDavid Woodhouse DIRTY_SPACE(infosize); 804e631ddbaSFerenc Havasi 805e631ddbaSFerenc Havasi return 1; 806e631ddbaSFerenc Havasi } 807e631ddbaSFerenc Havasi 808e631ddbaSFerenc Havasi return 0; 809e631ddbaSFerenc Havasi } 810e631ddbaSFerenc Havasi 811e631ddbaSFerenc Havasi /* Write out summary information - called from jffs2_do_reserve_space */ 812e631ddbaSFerenc Havasi 813e631ddbaSFerenc Havasi int jffs2_sum_write_sumnode(struct jffs2_sb_info *c) 814e631ddbaSFerenc Havasi { 815e631ddbaSFerenc Havasi struct jffs2_raw_node_ref *summary_ref; 816e631ddbaSFerenc Havasi int datasize, infosize, padsize, ret; 817e631ddbaSFerenc Havasi struct jffs2_eraseblock *jeb; 818e631ddbaSFerenc Havasi 819733802d9SArtem B. Bityutskiy dbg_summary("called\n"); 820e631ddbaSFerenc Havasi 821e631ddbaSFerenc Havasi jeb = c->nextblock; 822e631ddbaSFerenc Havasi 823e631ddbaSFerenc Havasi if (!c->summary->sum_num || !c->summary->sum_list_head) { 824e631ddbaSFerenc Havasi JFFS2_WARNING("Empty summary info!!!\n"); 825e631ddbaSFerenc Havasi BUG(); 826e631ddbaSFerenc Havasi } 827e631ddbaSFerenc Havasi 828e631ddbaSFerenc Havasi datasize = c->summary->sum_size + sizeof(struct jffs2_sum_marker); 8292bc9764cSFerenc Havasi infosize = sizeof(struct jffs2_raw_summary) + datasize; 830e631ddbaSFerenc Havasi padsize = jeb->free_size - infosize; 831e631ddbaSFerenc Havasi infosize += padsize; 832e631ddbaSFerenc Havasi datasize += padsize; 833e631ddbaSFerenc Havasi 834e631ddbaSFerenc Havasi /* Is there enough space for summary? */ 835e631ddbaSFerenc Havasi if (padsize < 0) { 836e631ddbaSFerenc Havasi /* don't try to write out summary for this jeb */ 837e631ddbaSFerenc Havasi jffs2_sum_disable_collecting(c->summary); 838e631ddbaSFerenc Havasi 839e631ddbaSFerenc Havasi JFFS2_WARNING("Not enough space for summary, padsize = %d\n", padsize); 840e631ddbaSFerenc Havasi return 0; 841e631ddbaSFerenc Havasi } 842e631ddbaSFerenc Havasi 843e631ddbaSFerenc Havasi ret = jffs2_sum_write_data(c, jeb, infosize, datasize, padsize); 844e631ddbaSFerenc Havasi if (ret) 845e631ddbaSFerenc Havasi return 0; /* can't write out summary, block is marked as NOSUM_SIZE */ 846e631ddbaSFerenc Havasi 847e631ddbaSFerenc Havasi /* for ACCT_PARANOIA_CHECK */ 848e631ddbaSFerenc Havasi spin_unlock(&c->erase_completion_lock); 849e631ddbaSFerenc Havasi summary_ref = jffs2_alloc_raw_node_ref(); 850e631ddbaSFerenc Havasi spin_lock(&c->erase_completion_lock); 851e631ddbaSFerenc Havasi 852e631ddbaSFerenc Havasi if (!summary_ref) { 853e631ddbaSFerenc Havasi JFFS2_NOTICE("Failed to allocate node ref for summary\n"); 854e631ddbaSFerenc Havasi return -ENOMEM; 855e631ddbaSFerenc Havasi } 856e631ddbaSFerenc Havasi 857e631ddbaSFerenc Havasi summary_ref->next_in_ino = NULL; 858e631ddbaSFerenc Havasi summary_ref->flash_offset = (jeb->offset + c->sector_size - jeb->free_size) | REF_NORMAL; 859e631ddbaSFerenc Havasi 860f1f9671bSDavid Woodhouse jffs2_link_node_ref(c, jeb, summary_ref, infosize); 861e631ddbaSFerenc Havasi 862e631ddbaSFerenc Havasi return 0; 863e631ddbaSFerenc Havasi } 864