static fsw_status_t fsw_ext2_dnode_fill(struct fsw_ext2_volume *vol, struct fsw_ext2_dnode *dno) { fsw_status_t status; fsw_u32 groupno, ino_in_group, ino_bno, ino_index; fsw_u8 *buffer; if (dno->raw) return FSW_SUCCESS; FSW_MSG_DEBUG((FSW_MSGSTR("fsw_ext2_dnode_fill: inode %d\n"), dno->g.dnode_id)); // read the inode block groupno = (fsw_u32) (dno->g.dnode_id - 1) / vol->sb->s_inodes_per_group; ino_in_group = (fsw_u32) (dno->g.dnode_id - 1) % vol->sb->s_inodes_per_group; ino_bno = vol->inotab_bno[groupno] + ino_in_group / (vol->g.phys_blocksize / vol->inode_size); ino_index = ino_in_group % (vol->g.phys_blocksize / vol->inode_size); status = fsw_block_get(vol, ino_bno, 2, (void **)&buffer); if (status) return status; // keep our inode around status = fsw_memdup((void **)&dno->raw, buffer + ino_index * vol->inode_size, vol->inode_size); fsw_block_release(vol, ino_bno, buffer); if (status) return status; // get info from the inode dno->g.size = dno->raw->i_size; // TODO: check docs for 64-bit sized files if (S_ISREG(dno->raw->i_mode)) dno->g.type = FSW_DNODE_TYPE_FILE; else if (S_ISDIR(dno->raw->i_mode)) dno->g.type = FSW_DNODE_TYPE_DIR; else if (S_ISLNK(dno->raw->i_mode)) dno->g.type = FSW_DNODE_TYPE_SYMLINK; else dno->g.type = FSW_DNODE_TYPE_SPECIAL; return FSW_SUCCESS; }
static fsw_status_t fsw_iso9660_volume_mount(struct fsw_iso9660_volume *vol) { fsw_status_t status; void *buffer; fsw_u32 blockno; struct iso9660_volume_descriptor *voldesc; struct iso9660_primary_volume_descriptor *pvoldesc; fsw_u32 voldesc_type; int i; struct fsw_string s; struct iso9660_dirrec rootdir; int sua_pos; char *sig; int skip; struct fsw_rock_ridge_susp_entry *entry; // read through the Volume Descriptor Set fsw_set_blocksize(vol, ISO9660_BLOCKSIZE, ISO9660_BLOCKSIZE); blockno = ISO9660_SUPERBLOCK_BLOCKNO; do { status = fsw_block_get(vol, blockno, 0, &buffer); if (status) return status; voldesc = (struct iso9660_volume_descriptor *)buffer; voldesc_type = voldesc->volume_descriptor_type; if (fsw_memeq(voldesc->standard_identifier, "CD001", 5)) { // descriptor follows ISO 9660 standard if (voldesc_type == 1 && voldesc->volume_descriptor_version == 1) { // suitable Primary Volume Descriptor found if (vol->primary_voldesc) { fsw_free(vol->primary_voldesc); vol->primary_voldesc = NULL; } status = fsw_memdup((void **)&vol->primary_voldesc, voldesc, ISO9660_BLOCKSIZE); } } else if (!fsw_memeq(voldesc->standard_identifier, "CD", 2)) { // completely alien standard identifier, stop reading voldesc_type = 255; } fsw_block_release(vol, blockno, buffer); blockno++; } while (!status && voldesc_type != 255); if (status) return status; // get information from Primary Volume Descriptor if (vol->primary_voldesc == NULL) return FSW_UNSUPPORTED; pvoldesc = vol->primary_voldesc; if (ISOINT(pvoldesc->logical_block_size) != 2048) return FSW_UNSUPPORTED; // get volume name for (i = 32; i > 0; i--) if (pvoldesc->volume_identifier[i-1] != ' ') break; s.type = FSW_STRING_TYPE_ISO88591; s.size = s.len = i; s.data = pvoldesc->volume_identifier; status = fsw_strdup_coerce(&vol->g.label, vol->g.host_string_type, &s); if (status) return status; // setup the root dnode status = fsw_dnode_create_root(vol, ISO9660_SUPERBLOCK_BLOCKNO << ISO9660_BLOCKSIZE_BITS, &vol->g.root); if (status) return status; fsw_memcpy(&vol->g.root->dirrec, &pvoldesc->root_directory, sizeof(struct iso9660_dirrec)); if ( pvoldesc->escape[0] == 0x25 && pvoldesc->escape[1] == 0x2f && ( pvoldesc->escape[2] == 0x40 || pvoldesc->escape[2] == 0x43 || pvoldesc->escape[2] == 0x45)) { FSW_MSG_DEBUG((FSW_MSGSTR("fsw_iso9660_volume_mount: success (joliet!!!)\n"))); vol->fJoliet = 1; } fsw_memcpy(&rootdir, &pvoldesc->root_directory, sizeof(rootdir)); sua_pos = (sizeof(struct iso9660_dirrec)) + rootdir.file_identifier_length + (rootdir.file_identifier_length % 2) - 2; //int sua_size = rootdir.dirrec_length - rootdir.file_identifier_length; //FSW_MSG_DEBUG((FSW_MSGSTR("fsw_iso9660_volume_mount: success (SUA(pos:%x, sz:%d)!!!)\n"), sua_pos, sua_size)); #if 1 status = fsw_block_get(vol, ISOINT(rootdir.extent_location), 0, &buffer); sig = (char *)buffer + sua_pos; skip = 0; entry = (struct fsw_rock_ridge_susp_entry *)sig; if ( entry->sig[0] == 'S' && entry->sig[1] == 'P') { struct fsw_rock_ridge_susp_sp *sp = (struct fsw_rock_ridge_susp_sp *)entry; if (sp->magic[0] == 0xbe && sp->magic[1] == 0xef) { vol->fRockRidge = 1; } else { FSW_MSG_DEBUG((FSW_MSGSTR("fsw_iso9660_volume_mount: SP magic isn't valid\n"))); } skip = sp->skip; } #endif // release volume descriptors fsw_free(vol->primary_voldesc); vol->primary_voldesc = NULL; FSW_MSG_DEBUG((FSW_MSGSTR("fsw_iso9660_volume_mount: success\n"))); return FSW_SUCCESS; }
static fsw_status_t rr_find_nm(struct fsw_iso9660_volume *vol, struct iso9660_dirrec *dirrec, int off, struct fsw_string *str) { fsw_u8 *r, *begin; int fCe = 0; struct fsw_rock_ridge_susp_nm *nm; int limit = dirrec->dirrec_length; begin = (fsw_u8 *)dirrec; r = (fsw_u8 *)dirrec + off; str->data = NULL; str->len = 0; str->size = 0; str->type = 0; while(off < limit) { if (r[0] == 'C' && r[1] == 'E' && r[2] == 28) { int rc; int ce_off; union fsw_rock_ridge_susp_ce *ce; if (fCe == 0) fsw_alloc_zero(ISO9660_BLOCKSIZE, (void *)&begin); fCe = 1; DEBUG((DEBUG_WARN, "%a:%d we found CE before NM or its continuation\n", __FILE__, __LINE__)); ce = (union fsw_rock_ridge_susp_ce *)r; limit = ISOINT(ce->X.len); ce_off = ISOINT(ce->X.offset); rc = rr_read_ce(vol, ce, begin); if (rc != FSW_SUCCESS) { fsw_free(begin); return rc; } begin += ce_off; r = begin; } if (r[0] == 'N' && r[1] == 'M') { nm = (struct fsw_rock_ridge_susp_nm *)r; if( nm->e.sig[0] == 'N' && nm->e.sig[1] == 'M') { int len = 0; fsw_u8 *tmp = NULL; if (nm->flags & RR_NM_CURR) { fsw_memdup(str->data, ".", 1); str->len = 1; goto done; } if (nm->flags & RR_NM_PARE) { fsw_memdup(str->data, "..", 2); str->len = 2; goto done; } len = nm->e.len - sizeof(struct fsw_rock_ridge_susp_nm) + 1; fsw_alloc_zero(str->len + len, (void **)&tmp); if (str->data != NULL) { fsw_memcpy(tmp, str->data, str->len); fsw_free(str->data); } DEBUG((DEBUG_INFO, "dst:%p src:%p len:%d\n", tmp + str->len, &nm->name[0], len)); fsw_memcpy(tmp + str->len, &nm->name[0], len); str->data = tmp; str->len += len; if ((nm->flags & RR_NM_CONT) == 0) goto done; } } r++; off = (int)(r - (fsw_u8 *)begin); } if(fCe == 1) fsw_free(begin); return FSW_NOT_FOUND; done: str->type = FSW_STRING_TYPE_ISO88591; str->size = str->len; if(fCe == 1) fsw_free(begin); return FSW_SUCCESS; }