/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2005 by Miika Pekkarinen * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ /* * TagCache API * * ----------x---------x------------------x----- * | | | External * +---------------x-------+ | TagCache | Libraries * | Modification routines | | Core | * +-x---------x-----------+ | | * | (R/W) | | | | * | +------x-------------x-+ +-------------x-----+ | * | | x==x Filters & clauses | | * | | Search routines | +-------------------+ | * | | x============================x DirCache * | +-x--------------------+ | (optional) * | | (R) | * | | +-------------------------------+ +---------+ | * | | | DB Commit (sort,unique,index) | | | | * | | +-x--------------------------x--+ | Control | | * | | | (R/W) | (R) | Thread | | * | | | +----------------------+ | | | | * | | | | TagCache DB Builder | | +---------+ | * | | | +-x-------------x------+ | | * | | | | (R) | (W) | | * | | | | +--x--------x---------+ | * | | | | | Temporary Commit DB | | * | | | | +---------------------+ | * +-x----x-------x--+ | * | TagCache RAM DB x==\(W) +-----------------+ | * +-----------------+ \===x | | * | | | | (R) | Ram DB Loader x============x DirCache * +-x----x---x---x---+ /==x | | (optional) * | Tagcache Disk DB x==/ +-----------------+ | * +------------------+ | * */ #include #include "config.h" #include "thread.h" #include "kernel.h" #include "system.h" #include "logf.h" #include "string.h" #include "usb.h" #include "dircache.h" #include "metadata.h" #include "id3.h" #include "settings.h" #include "splash.h" #include "lang.h" #include "tagcache.h" #include "buffer.h" #include "atoi.h" #include "crc32.h" #include "eeprom_settings.h" /* Tag Cache thread. */ static struct event_queue tagcache_queue; static long tagcache_stack[(DEFAULT_STACK_SIZE + 0x4000)/sizeof(long)]; static const char tagcache_thread_name[] = "tagcache"; /* Previous path when scanning directory tree recursively. */ static char curpath[MAX_PATH*2]; static long curpath_size = sizeof(curpath); /* Used when removing duplicates. */ static char *tempbuf; /* Allocated when needed. */ static long tempbufidx; /* Current location in buffer. */ static long tempbuf_size; /* Buffer size (TEMPBUF_SIZE). */ static long tempbuf_left; /* Buffer space left. */ static long tempbuf_pos; /* Tags we want to get sorted (loaded to the tempbuf). */ static const int sorted_tags[] = { tag_artist, tag_album, tag_genre, tag_composer, tag_title }; /* Uniqued tags (we can use these tags with filters and conditional clauses). */ static const int unique_tags[] = { tag_artist, tag_album, tag_genre, tag_composer }; /* Numeric tags (we can use these tags with conditional clauses). */ static const int numeric_tags[] = { tag_year, tag_tracknumber, tag_length, tag_bitrate, tag_playcount, tag_playtime, tag_lastplayed, tag_virt_autoscore }; static const char *tags_str[] = { "artist", "album", "genre", "title", "filename", "composer", "year", "tracknumber", "bitrate", "length", "playcount", "playtime", "lastplayed" }; /* Status information of the tagcache. */ static struct tagcache_stat stat; /* Queue commands. */ enum tagcache_queue { Q_STOP_SCAN = 0, Q_START_SCAN, Q_IMPORT_CHANGELOG, Q_UPDATE, Q_REBUILD, }; /* Tag database structures. */ /* Variable-length tag entry in tag files. */ struct tagfile_entry { short tag_length; /* Length of the data in bytes including '\0' */ short idx_id; /* Corresponding entry location in index file of not unique tags */ char tag_data[0]; /* Begin of the tag data */ }; /* Fixed-size tag entry in master db index. */ struct index_entry { long tag_seek[TAG_COUNT]; /* Location of tag data or numeric tag data */ long flag; /* Status flags */ }; /* Header is the same in every file. */ struct tagcache_header { long magic; /* Header version number */ long datasize; /* Data size in bytes */ long entry_count; /* Number of entries in this file */ }; struct master_header { struct tagcache_header tch; long serial; /* Increasing counting number */ }; static long current_serial; #ifdef HAVE_TC_RAMCACHE /* Header is created when loading database to ram. */ struct ramcache_header { struct master_header h; /* Header from the master index */ struct index_entry *indices; /* Master index file content */ char *tags[TAG_COUNT]; /* Tag file content (not including filename tag) */ int entry_count[TAG_COUNT]; /* Number of entries in the indices. */ }; # ifdef HAVE_EEPROM_SETTINGS struct statefile_header { struct ramcache_header *hdr; struct tagcache_stat stat; }; # endif /* Pointer to allocated ramcache_header */ static struct ramcache_header *hdr; #endif /** * Full tag entries stored in a temporary file waiting * for commit to the cache. */ struct temp_file_entry { long tag_offset[TAG_COUNT]; short tag_length[TAG_COUNT]; long data_length; }; struct tempbuf_id_list { long id; struct tempbuf_id_list *next; }; struct tempbuf_searchidx { long idx_id; char *str; int seek; struct tempbuf_id_list idlist; }; /* Lookup buffer for fixing messed up index while after sorting. */ static long commit_entry_count; static long lookup_buffer_depth; struct tempbuf_searchidx **lookup; /* Used when building the temporary file. */ static int cachefd = -1, filenametag_fd; static int total_entry_count = 0; static int data_size = 0; static int processed_dir_count; /* Thread safe locking */ static volatile int write_lock; static volatile int read_lock; int tagcache_str_to_tag(const char *str) { int i; for (i = 0; i < (long)(sizeof(tags_str)/sizeof(tags_str[0])); i++) { if (!strcasecmp(tags_str[i], str)) return i; } return -1; } const char* tagcache_tag_to_str(int tag) { return tags_str[tag]; } bool tagcache_is_numeric_tag(int type) { int i; for (i = 0; i < (int)(sizeof(numeric_tags)/sizeof(numeric_tags[0])); i++) { if (type == numeric_tags[i]) return true; } return false; } bool tagcache_is_unique_tag(int type) { int i; for (i = 0; i < (int)(sizeof(unique_tags)/sizeof(unique_tags[0])); i++) { if (type == unique_tags[i]) return true; } return false; } bool tagcache_is_sorted_tag(int type) { int i; for (i = 0; i < (int)(sizeof(sorted_tags)/sizeof(sorted_tags[0])); i++) { if (type == sorted_tags[i]) return true; } return false; } static int open_tag_fd(struct tagcache_header *hdr, int tag, bool write) { int fd; char buf[MAX_PATH]; int rc; if (tagcache_is_numeric_tag(tag) || tag < 0 || tag >= TAG_COUNT) return -1; snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, tag); fd = open(buf, write ? O_RDWR : O_RDONLY); if (fd < 0) { logf("tag file open failed: %d", tag); stat.ready = false; return fd; } /* Check the header. */ rc = read(fd, hdr, sizeof(struct tagcache_header)); if (hdr->magic != TAGCACHE_MAGIC || rc != sizeof(struct tagcache_header)) { logf("header error"); stat.ready = false; close(fd); return -2; } return fd; } #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE) static long find_entry_ram(const char *filename, const struct dircache_entry *dc) { static long last_pos = 0; int counter = 0; int i; /* Check if we tagcache is loaded into ram. */ if (!stat.ramcache) return -1; if (dc == NULL) dc = dircache_get_entry_ptr(filename); if (dc == NULL) { logf("tagcache: file not found."); return -1; } try_again: if (last_pos > 0) i = last_pos; else i = 0; for (; i < hdr->h.tch.entry_count; i++) { if (hdr->indices[i].tag_seek[tag_filename] == (long)dc) { last_pos = MAX(0, i - 3); return i; } if (++counter == 100) { yield(); counter = 0; } } if (last_pos > 0) { last_pos = 0; goto try_again; } return -1; } #endif static long find_entry_disk(const char *filename) { struct tagcache_header tch; static long last_pos = -1; long pos_history[POS_HISTORY_COUNT]; long pos_history_idx = 0; bool found = false; struct tagfile_entry tfe; int fd; char buf[MAX_PATH]; int i; int pos = -1; if (!stat.ready) return -2; fd = filenametag_fd; if (fd < 0) { last_pos = -1; if ( (fd = open_tag_fd(&tch, tag_filename, false)) < 0) return -1; } check_again: if (last_pos > 0) lseek(fd, last_pos, SEEK_SET); else lseek(fd, sizeof(struct tagcache_header), SEEK_SET); while (true) { pos = lseek(fd, 0, SEEK_CUR); for (i = pos_history_idx-1; i >= 0; i--) pos_history[i+1] = pos_history[i]; pos_history[0] = pos; if (read(fd, &tfe, sizeof(struct tagfile_entry)) != sizeof(struct tagfile_entry)) { break ; } if (tfe.tag_length >= (long)sizeof(buf)) { logf("too long tag #1"); close(fd); last_pos = -1; return -2; } if (read(fd, buf, tfe.tag_length) != tfe.tag_length) { logf("read error #2"); close(fd); last_pos = -1; return -3; } if (!strcasecmp(filename, buf)) { last_pos = pos_history[pos_history_idx]; found = true; break ; } if (pos_history_idx < POS_HISTORY_COUNT - 1) pos_history_idx++; } /* Not found? */ if (!found) { if (last_pos > 0) { last_pos = -1; logf("seek again"); goto check_again; } if (fd != filenametag_fd) close(fd); return -4; } if (fd != filenametag_fd) close(fd); return tfe.idx_id; } static int find_index(const char *filename) { long idx_id = -1; #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE) if (stat.ramcache && dircache_is_enabled()) idx_id = find_entry_ram(filename, NULL); #endif if (idx_id < 0) idx_id = find_entry_disk(filename); if (idx_id < 0) return false; return idx_id; } bool tagcache_find_index(struct tagcache_search *tcs, const char *filename) { int idx_id; if (!stat.ready) return false; idx_id = find_index(filename); if (idx_id < 0) return false; if (!tagcache_search(tcs, tag_filename)) return false; tcs->entry_count = 0; tcs->idx_id = idx_id; return true; } static bool get_index(int masterfd, int idxid, struct index_entry *idx, bool use_ram) { if (idxid < 0) { logf("Incorrect idxid: %d", idxid); return false; } #ifdef HAVE_TC_RAMCACHE if (stat.ramcache && use_ram) { if (hdr->indices[idxid].flag & FLAG_DELETED) return false; memcpy(idx, &hdr->indices[idxid], sizeof(struct index_entry)); return true; } #else (void)use_ram; #endif lseek(masterfd, idxid * sizeof(struct index_entry) + sizeof(struct master_header), SEEK_SET); if (read(masterfd, idx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("read error #3"); return false; } if (idx->flag & FLAG_DELETED) return false; return true; } static bool write_index(int masterfd, int idxid, struct index_entry *idx) { /* We need to exclude all memory only flags & tags when writing to disk. */ if (idx->flag & FLAG_DIRCACHE) { logf("memory only flags!"); return false; } #ifdef HAVE_TC_RAMCACHE if (stat.ramcache) { memcpy(&hdr->indices[idxid], idx, sizeof(struct index_entry)); } #endif lseek(masterfd, idxid * sizeof(struct index_entry) + sizeof(struct master_header), SEEK_SET); if (write(masterfd, idx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("write error #3"); logf("idxid: %d", idxid); return false; } return true; } static long check_virtual_tags(int tag, const struct index_entry *idx) { long data = 0; switch (tag) { case tag_virt_autoscore: if (idx->tag_seek[tag_length] == 0 || idx->tag_seek[tag_playcount] == 0) { data = 0; } else { data = 100 * idx->tag_seek[tag_playtime] / idx->tag_seek[tag_length] / idx->tag_seek[tag_playcount]; } break; default: data = idx->tag_seek[tag]; } return data; } long tagcache_get_numeric(const struct tagcache_search *tcs, int tag) { struct index_entry idx; if (!stat.ready) return false; if (!tagcache_is_numeric_tag(tag)) return -1; if (!get_index(tcs->masterfd, tcs->idx_id, &idx, true)) return -2; return check_virtual_tags(tag, &idx); } inline static bool str_ends_with(const char *str1, const char *str2) { int str_len = strlen(str1); int clause_len = strlen(str2); if (clause_len > str_len) return false; return !strcasecmp(&str1[str_len - clause_len], str2); } static bool check_against_clause(long numeric, const char *str, const struct tagcache_search_clause *clause) { switch (clause->type) { case clause_is: if (clause->numeric) return numeric == clause->numeric_data; else return !strcasecmp(clause->str, str); case clause_is_not: if (clause->numeric) return numeric != clause->numeric_data; else return strcasecmp(clause->str, str); case clause_gt: return numeric > clause->numeric_data; case clause_gteq: return numeric >= clause->numeric_data; case clause_lt: return numeric < clause->numeric_data; case clause_lteq: return numeric <= clause->numeric_data; case clause_contains: return (strcasestr(str, clause->str) != NULL); case clause_not_contains: return (strcasestr(str, clause->str) == NULL); case clause_begins_with: return (strcasestr(str, clause->str) == str); case clause_not_begins_with: return (strcasestr(str, clause->str) != str); case clause_ends_with: return str_ends_with(str, clause->str); case clause_not_ends_with: return !str_ends_with(str, clause->str); } return false; } static bool add_uniqbuf(struct tagcache_search *tcs, long id) { int i; /* If uniq buffer is not defined we must return true for search to work. */ if (tcs->unique_list == NULL || (!tagcache_is_unique_tag(tcs->type) && !tagcache_is_numeric_tag(tcs->type))) { return true; } for (i = 0; i < tcs->unique_list_count; i++) { /* Return false if entry is found. */ if (tcs->unique_list[i] == id) return false; } if (tcs->unique_list_count < tcs->unique_list_capacity) { tcs->unique_list[i] = id; tcs->unique_list_count++; } return true; } static bool build_lookup_list(struct tagcache_search *tcs) { struct index_entry entry; int i; tcs->seek_list_count = 0; #ifdef HAVE_TC_RAMCACHE if (tcs->ramsearch) { int j; for (i = tcs->seek_pos; i < hdr->h.tch.entry_count; i++) { if (tcs->seek_list_count == SEEK_LIST_SIZE) break ; /* Skip deleted files. */ if (hdr->indices[i].flag & FLAG_DELETED) continue; /* Go through all filters.. */ for (j = 0; j < tcs->filter_count; j++) { if (hdr->indices[i].tag_seek[tcs->filter_tag[j]] != tcs->filter_seek[j]) { break ; } } if (j < tcs->filter_count) continue ; /* Go through all conditional clauses. */ for (j = 0; j < tcs->clause_count; j++) { struct index_entry *idx = &hdr->indices[i]; int seek; char buf[256]; char *str = NULL; struct tagfile_entry *entry; seek = check_virtual_tags(tcs->clause[j]->tag, idx); if (!tagcache_is_numeric_tag(tcs->clause[j]->tag)) { if (tcs->clause[j]->tag == tag_filename) { int oldtype = tcs->type; tcs->type = tag_filename; tagcache_retrieve(tcs, i, buf, sizeof buf); tcs->type = oldtype; str = buf; } else { entry = (struct tagfile_entry *)&hdr->tags[tcs->clause[j]->tag][seek]; str = entry->tag_data; } } if (!check_against_clause(seek, str, tcs->clause[j])) break ; } if (j < tcs->clause_count) continue ; /* Add to the seek list if not already in uniq buffer. */ if (!add_uniqbuf(tcs, hdr->indices[i].tag_seek[tcs->type])) continue; /* Lets add it. */ tcs->seek_list[tcs->seek_list_count] = hdr->indices[i].tag_seek[tcs->type]; tcs->seek_flags[tcs->seek_list_count] = hdr->indices[i].flag; tcs->seek_list_count++; } tcs->seek_pos = i; return tcs->seek_list_count > 0; } #endif lseek(tcs->masterfd, tcs->seek_pos * sizeof(struct index_entry) + sizeof(struct master_header), SEEK_SET); while (read(tcs->masterfd, &entry, sizeof(struct index_entry)) == sizeof(struct index_entry)) { /* Check if entry has been deleted. */ if (entry.flag & FLAG_DELETED) continue; if (tcs->seek_list_count == SEEK_LIST_SIZE) break ; /* Go through all filters.. */ for (i = 0; i < tcs->filter_count; i++) { if (entry.tag_seek[tcs->filter_tag[i]] != tcs->filter_seek[i]) break ; } tcs->seek_pos++; if (i < tcs->filter_count) continue ; /* Check for conditions. */ for (i = 0; i < tcs->clause_count; i++) { struct tagfile_entry tfe; int seek; char str[256]; seek = check_virtual_tags(tcs->clause[i]->tag, &entry); memset(str, 0, sizeof str); if (!tagcache_is_numeric_tag(tcs->clause[i]->tag)) { int fd = tcs->idxfd[tcs->clause[i]->tag]; lseek(fd, seek, SEEK_SET); read(fd, &tfe, sizeof(struct tagfile_entry)); if (tfe.tag_length >= (int)sizeof(str)) { logf("Too long tag read!"); break ; } read(fd, str, tfe.tag_length); /* Check if entry has been deleted. */ if (str[0] == '\0') break; } if (!check_against_clause(seek, str, tcs->clause[i])) break ; } if (i < tcs->clause_count) continue ; /* Add to the seek list if not already in uniq buffer. */ if (!add_uniqbuf(tcs, entry.tag_seek[tcs->type])) continue; /* Lets add it. */ tcs->seek_list[tcs->seek_list_count] = entry.tag_seek[tcs->type]; tcs->seek_flags[tcs->seek_list_count] = entry.flag; tcs->seek_list_count++; yield(); } return tcs->seek_list_count > 0; } static void remove_files(void) { int i; char buf[MAX_PATH]; stat.ready = false; stat.ramcache = false; remove(TAGCACHE_FILE_MASTER); for (i = 0; i < TAG_COUNT; i++) { if (tagcache_is_numeric_tag(i)) continue; snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, i); remove(buf); } } static int open_master_fd(struct master_header *hdr, bool write) { int fd; int rc; fd = open(TAGCACHE_FILE_MASTER, write ? O_RDWR : O_RDONLY); if (fd < 0) { logf("master file open failed for R/W"); stat.ready = false; return fd; } /* Check the header. */ rc = read(fd, hdr, sizeof(struct master_header)); if (hdr->tch.magic != TAGCACHE_MAGIC || rc != sizeof(struct master_header)) { logf("header error"); stat.ready = false; close(fd); return -2; } return fd; } bool tagcache_search(struct tagcache_search *tcs, int tag) { struct tagcache_header tag_hdr; struct master_header master_hdr; int i; if (tcs->initialized) tagcache_search_finish(tcs); while (read_lock) sleep(1); memset(tcs, 0, sizeof(struct tagcache_search)); if (stat.commit_step > 0 || !stat.ready) return false; tcs->position = sizeof(struct tagcache_header); tcs->type = tag; tcs->seek_pos = 0; tcs->seek_list_count = 0; tcs->filter_count = 0; tcs->masterfd = -1; for (i = 0; i < TAG_COUNT; i++) tcs->idxfd[i] = -1; #ifndef HAVE_TC_RAMCACHE tcs->ramsearch = false; #else tcs->ramsearch = stat.ramcache; if (tcs->ramsearch) { tcs->entry_count = hdr->entry_count[tcs->type]; } else #endif { if (!tagcache_is_numeric_tag(tcs->type)) { tcs->idxfd[tcs->type] = open_tag_fd(&tag_hdr, tcs->type, false); if (tcs->idxfd[tcs->type] < 0) return false; } /* Always open as R/W so we can pass tcs to functions that modify data also * without failing. */ tcs->masterfd = open_master_fd(&master_hdr, true); if (tcs->masterfd < 0) return false; } tcs->valid = true; tcs->initialized = true; write_lock++; return true; } void tagcache_search_set_uniqbuf(struct tagcache_search *tcs, void *buffer, long length) { tcs->unique_list = (unsigned long *)buffer; tcs->unique_list_capacity = length / sizeof(*tcs->unique_list); tcs->unique_list_count = 0; } bool tagcache_search_add_filter(struct tagcache_search *tcs, int tag, int seek) { if (tcs->filter_count == TAGCACHE_MAX_FILTERS) return false; if (!tagcache_is_unique_tag(tag) || tagcache_is_numeric_tag(tag)) return false; tcs->filter_tag[tcs->filter_count] = tag; tcs->filter_seek[tcs->filter_count] = seek; tcs->filter_count++; return true; } bool tagcache_search_add_clause(struct tagcache_search *tcs, struct tagcache_search_clause *clause) { int i; if (tcs->clause_count >= TAGCACHE_MAX_CLAUSES) { logf("Too many clauses"); return false; } /* Check if there is already a similar filter in present (filters are * much faster than clauses). */ for (i = 0; i < tcs->filter_count; i++) { if (tcs->filter_tag[i] == clause->tag) return true; } if (!tagcache_is_numeric_tag(clause->tag) && tcs->idxfd[clause->tag] < 0) { char buf[MAX_PATH]; snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, clause->tag); tcs->idxfd[clause->tag] = open(buf, O_RDONLY); } tcs->clause[tcs->clause_count] = clause; tcs->clause_count++; return true; } static bool open_files(struct tagcache_search *tcs) { if (tcs->idxfd[tcs->type] < 0) { char fn[MAX_PATH]; snprintf(fn, sizeof fn, TAGCACHE_FILE_INDEX, tcs->type); tcs->idxfd[tcs->type] = open(fn, O_RDONLY); } if (tcs->idxfd[tcs->type] < 0) { logf("File not open!"); return false; } return true; } #define TAG_FILENAME_RAM(tcs) ((tcs->type == tag_filename) \ ? (flag & FLAG_DIRCACHE) : 1) static bool get_next(struct tagcache_search *tcs) { static char buf[MAX_PATH]; struct tagfile_entry entry; long flag = 0; if (!tcs->valid || !stat.ready) return false; if (tcs->idxfd[tcs->type] < 0 && !tagcache_is_numeric_tag(tcs->type) #ifdef HAVE_TC_RAMCACHE && !tcs->ramsearch #endif ) return false; /* Relative fetch. */ if (tcs->filter_count > 0 || tcs->clause_count > 0 || tagcache_is_numeric_tag(tcs->type)) { /* Check for end of list. */ if (tcs->seek_list_count == 0) { /* Try to fetch more. */ if (!build_lookup_list(tcs)) { tcs->valid = false; return false; } } tcs->seek_list_count--; flag = tcs->seek_flags[tcs->seek_list_count]; /* Seek stream to the correct position and continue to direct fetch. */ if ((!tcs->ramsearch || !TAG_FILENAME_RAM(tcs)) && !tagcache_is_numeric_tag(tcs->type)) { if (!open_files(tcs)) return false; lseek(tcs->idxfd[tcs->type], tcs->seek_list[tcs->seek_list_count], SEEK_SET); } else tcs->position = tcs->seek_list[tcs->seek_list_count]; } if (tagcache_is_numeric_tag(tcs->type)) { snprintf(buf, sizeof(buf), "%d", tcs->position); tcs->result_seek = tcs->position; tcs->result = buf; tcs->result_len = strlen(buf) + 1; return true; } /* Direct fetch. */ #ifdef HAVE_TC_RAMCACHE if (tcs->ramsearch && TAG_FILENAME_RAM(tcs)) { struct tagfile_entry *ep; if (tcs->entry_count == 0) { tcs->valid = false; return false; } tcs->entry_count--; tcs->result_seek = tcs->position; # ifdef HAVE_DIRCACHE if (tcs->type == tag_filename) { dircache_copy_path((struct dircache_entry *)tcs->position, buf, sizeof buf); tcs->result = buf; tcs->result_len = strlen(buf) + 1; tcs->idx_id = FLAG_GET_ATTR(flag); tcs->ramresult = false; return true; } # endif ep = (struct tagfile_entry *)&hdr->tags[tcs->type][tcs->position]; tcs->position += sizeof(struct tagfile_entry) + ep->tag_length; tcs->result = ep->tag_data; tcs->result_len = strlen(tcs->result) + 1; tcs->idx_id = ep->idx_id; tcs->ramresult = true; return true; } else #endif { if (!open_files(tcs)) return false; tcs->result_seek = lseek(tcs->idxfd[tcs->type], 0, SEEK_CUR); if (read(tcs->idxfd[tcs->type], &entry, sizeof(struct tagfile_entry)) != sizeof(struct tagfile_entry)) { /* End of data. */ tcs->valid = false; return false; } } if (entry.tag_length > (long)sizeof(buf)) { tcs->valid = false; logf("too long tag #2"); return false; } if (read(tcs->idxfd[tcs->type], buf, entry.tag_length) != entry.tag_length) { tcs->valid = false; logf("read error #4"); return false; } tcs->result = buf; tcs->result_len = strlen(tcs->result) + 1; tcs->idx_id = entry.idx_id; tcs->ramresult = false; return true; } bool tagcache_get_next(struct tagcache_search *tcs) { while (get_next(tcs)) { if (tcs->result_len > 1) return true; } return false; } bool tagcache_retrieve(struct tagcache_search *tcs, int idxid, char *buf, long size) { struct tagfile_entry tfe; struct index_entry idx; long seek; *buf = '\0'; if (!get_index(tcs->masterfd, idxid, &idx, true)) return false; seek = idx.tag_seek[tcs->type]; if (seek < 0) { logf("Retrieve failed"); return false; } #ifdef HAVE_TC_RAMCACHE if (tcs->ramsearch) { struct tagfile_entry *ep; # ifdef HAVE_DIRCACHE if (tcs->type == tag_filename && hdr->indices[idxid].flag & FLAG_DIRCACHE) { dircache_copy_path((struct dircache_entry *)seek, buf, size); return true; } else # endif if (tcs->type != tag_filename) { ep = (struct tagfile_entry *)&hdr->tags[tcs->type][seek]; strncpy(buf, ep->tag_data, size-1); return true; } } #endif if (!open_files(tcs)) return false; lseek(tcs->idxfd[tcs->type], seek, SEEK_SET); if (read(tcs->idxfd[tcs->type], &tfe, sizeof(struct tagfile_entry)) != sizeof(struct tagfile_entry)) { logf("read error #5"); return false; } if (tfe.tag_length >= size) { logf("too small buffer"); return false; } if (read(tcs->idxfd[tcs->type], buf, tfe.tag_length) != tfe.tag_length) { logf("read error #6"); return false; } buf[tfe.tag_length] = '\0'; return true; } #if 0 void tagcache_modify(struct tagcache_search *tcs, int type, const char *text) { struct tagentry *entry; if (tcs->type != tag_title) return ; /* We will need reserve buffer for this. */ if (tcs->ramcache) { struct tagfile_entry *ep; ep = (struct tagfile_entry *)&hdr->tags[tcs->type][tcs->result_seek]; tcs->seek_list[tcs->seek_list_count]; } entry = find_entry_ram(); } #endif void tagcache_search_finish(struct tagcache_search *tcs) { int i; if (!tcs->initialized) return; if (tcs->masterfd >= 0) { close(tcs->masterfd); tcs->masterfd = -1; } for (i = 0; i < TAG_COUNT; i++) { if (tcs->idxfd[i] >= 0) { close(tcs->idxfd[i]); tcs->idxfd[i] = -1; } } tcs->ramsearch = false; tcs->valid = false; tcs->initialized = 0; if (write_lock > 0) write_lock--; } #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE) static struct tagfile_entry *get_tag(const struct index_entry *entry, int tag) { return (struct tagfile_entry *)&hdr->tags[tag][entry->tag_seek[tag]]; } static long get_tag_numeric(const struct index_entry *entry, int tag) { return entry->tag_seek[tag]; } bool tagcache_fill_tags(struct mp3entry *id3, const char *filename) { struct index_entry *entry; int idx_id; if (!stat.ready) return false; /* Find the corresponding entry in tagcache. */ idx_id = find_entry_ram(filename, NULL); if (idx_id < 0 || !stat.ramcache) return false; entry = &hdr->indices[idx_id]; id3->title = get_tag(entry, tag_title)->tag_data; id3->artist = get_tag(entry, tag_artist)->tag_data; id3->album = get_tag(entry, tag_album)->tag_data; id3->genre_string = get_tag(entry, tag_genre)->tag_data; id3->composer = get_tag(entry, tag_composer)->tag_data; id3->year = get_tag_numeric(entry, tag_year); id3->tracknum = get_tag_numeric(entry, tag_tracknumber); id3->bitrate = get_tag_numeric(entry, tag_bitrate); if (id3->bitrate == 0) id3->bitrate = 1; return true; } #endif static inline void write_item(const char *item) { int len = strlen(item) + 1; data_size += len; write(cachefd, item, len); } inline void check_if_empty(char **tag) { if (tag == NULL || *tag == NULL || *tag[0] == '\0') *tag = ""; } #define CRC_BUF_LEN 8 #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE) static void add_tagcache(const char *path, const struct dircache_entry *dc) #else static void add_tagcache(const char *path) #endif { struct track_info track; struct temp_file_entry entry; bool ret; int fd; char tracknumfix[3]; char *genrestr; //uint32_t crcbuf[CRC_BUF_LEN]; if (cachefd < 0) return ; /* Check if the file is supported. */ if (probe_file_format(path) == AFMT_UNKNOWN) return ; /* Check if the file is already cached. */ #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE) if (stat.ramcache && dircache_is_enabled()) { if (find_entry_ram(path, dc) >= 0) return ; } else #endif { if (filenametag_fd >= 0) { if (find_entry_disk(path) >= 0) return ; } } fd = open(path, O_RDONLY); if (fd < 0) { logf("open fail: %s", path); return ; } memset(&track, 0, sizeof(struct track_info)); memset(&entry, 0, sizeof(struct temp_file_entry)); memset(&tracknumfix, 0, sizeof(tracknumfix)); ret = get_metadata(&track, fd, path, false); close(fd); if (!ret) return ; logf("-> %s", path); genrestr = id3_get_genre(&track.id3); check_if_empty(&track.id3.title); check_if_empty(&track.id3.artist); check_if_empty(&track.id3.album); check_if_empty(&genrestr); check_if_empty(&track.id3.composer); entry.tag_length[tag_filename] = strlen(path) + 1; entry.tag_length[tag_title] = strlen(track.id3.title) + 1; entry.tag_length[tag_artist] = strlen(track.id3.artist) + 1; entry.tag_length[tag_album] = strlen(track.id3.album) + 1; entry.tag_length[tag_genre] = strlen(genrestr) + 1; entry.tag_length[tag_composer] = strlen(track.id3.composer) + 1; entry.tag_offset[tag_filename] = 0; entry.tag_offset[tag_title] = entry.tag_offset[tag_filename] + entry.tag_length[tag_filename]; entry.tag_offset[tag_artist] = entry.tag_offset[tag_title] + entry.tag_length[tag_title]; entry.tag_offset[tag_album] = entry.tag_offset[tag_artist] + entry.tag_length[tag_artist]; entry.tag_offset[tag_genre] = entry.tag_offset[tag_album] + entry.tag_length[tag_album]; entry.tag_offset[tag_composer] = entry.tag_offset[tag_genre] + entry.tag_length[tag_genre]; entry.data_length = entry.tag_offset[tag_composer] + entry.tag_length[tag_composer]; /* Numeric tags */ entry.tag_offset[tag_year] = track.id3.year; entry.tag_offset[tag_tracknumber] = track.id3.tracknum; entry.tag_offset[tag_length] = track.id3.length; entry.tag_offset[tag_bitrate] = track.id3.bitrate; if (entry.tag_offset[tag_tracknumber] <= 0) { const char *p = strrchr(path, '.'); if (p == NULL) p = &path[strlen(path)-1]; while (*p != '/') { if (isdigit(*p) && isdigit(*(p-1))) { tracknumfix[1] = *p--; tracknumfix[0] = *p; break; } p--; } if (tracknumfix[0] != '\0') entry.tag_offset[tag_tracknumber] = atoi(tracknumfix); else entry.tag_offset[tag_tracknumber] = -1; } write(cachefd, &entry, sizeof(struct temp_file_entry)); write_item(path); write_item(track.id3.title); write_item(track.id3.artist); write_item(track.id3.album); write_item(genrestr); write_item(track.id3.composer); total_entry_count++; } static bool tempbuf_insert(char *str, int id, int idx_id, bool unique) { struct tempbuf_searchidx *index = (struct tempbuf_searchidx *)tempbuf; int len = strlen(str)+1; int i; unsigned crc32; unsigned *crcbuf = (unsigned *)&tempbuf[tempbuf_size-4]; char buf[MAX_PATH]; for (i = 0; str[i] != '\0' && i < (int)sizeof(buf)-1; i++) buf[i] = tolower(str[i]); buf[i] = '\0'; crc32 = crc_32(buf, i, 0xffffffff); if (unique) { /* Check if the crc does not exist -> entry does not exist for sure. */ for (i = 0; i < tempbufidx; i++) { if (crcbuf[-i] != crc32) continue; if (!strcasecmp(str, index[i].str)) { if (id < 0 || id >= lookup_buffer_depth) { logf("lookup buf overf.: %d", id); return false; } lookup[id] = &index[i]; return true; } } } /* Insert to CRC buffer. */ crcbuf[-tempbufidx] = crc32; tempbuf_left -= 4; /* Insert it to the buffer. */ tempbuf_left -= len; if (tempbuf_left - 4 < 0 || tempbufidx >= commit_entry_count-1) return false; if (id >= lookup_buffer_depth) { logf("lookup buf overf. #2: %d", id); return false; } if (id >= 0) { lookup[id] = &index[tempbufidx]; index[tempbufidx].idlist.id = id; } else index[tempbufidx].idlist.id = -1; index[tempbufidx].idlist.next = NULL; index[tempbufidx].idx_id = idx_id; index[tempbufidx].seek = -1; index[tempbufidx].str = &tempbuf[tempbuf_pos]; memcpy(index[tempbufidx].str, str, len); tempbuf_pos += len; tempbufidx++; return true; } static int compare(const void *p1, const void *p2) { struct tempbuf_searchidx *e1 = (struct tempbuf_searchidx *)p1; struct tempbuf_searchidx *e2 = (struct tempbuf_searchidx *)p2; /* if (!strncasecmp("the ", e1, 4)) e1 = &e1[4]; if (!strncasecmp("the ", e2, 4)) e2 = &e2[4]; */ return strncasecmp(e1->str, e2->str, MAX_PATH); } static int tempbuf_sort(int fd) { struct tempbuf_searchidx *index = (struct tempbuf_searchidx *)tempbuf; struct tagfile_entry fe; int i; int length; /* Generate reverse lookup entries. */ for (i = 0; i < lookup_buffer_depth; i++) { struct tempbuf_id_list *idlist; if (!lookup[i]) continue; if (lookup[i]->idlist.id == i) continue; idlist = &lookup[i]->idlist; while (idlist->next != NULL) idlist = idlist->next; tempbuf_left -= sizeof(struct tempbuf_id_list); if (tempbuf_left - 4 < 0) return -1; idlist->next = (struct tempbuf_id_list *)&tempbuf[tempbuf_pos]; if (tempbuf_pos & 0x03) { tempbuf_pos = (tempbuf_pos & ~0x03) + 0x04; tempbuf_left -= 3; idlist->next = (struct tempbuf_id_list *)&tempbuf[tempbuf_pos]; } tempbuf_pos += sizeof(struct tempbuf_id_list); idlist = idlist->next; idlist->id = i; idlist->next = NULL; } qsort(index, tempbufidx, sizeof(struct tempbuf_searchidx), compare); memset(lookup, 0, lookup_buffer_depth * sizeof(struct tempbuf_searchidx **)); for (i = 0; i < tempbufidx; i++) { struct tempbuf_id_list *idlist = &index[i].idlist; /* Fix the lookup list. */ while (idlist != NULL) { if (idlist->id >= 0) lookup[idlist->id] = &index[i]; idlist = idlist->next; } index[i].seek = lseek(fd, 0, SEEK_CUR); length = strlen(index[i].str) + 1; fe.tag_length = length; fe.idx_id = index[i].idx_id; /* Check the chunk alignment. */ if ((fe.tag_length + sizeof(struct tagfile_entry)) % TAGFILE_ENTRY_CHUNK_LENGTH) { fe.tag_length += TAGFILE_ENTRY_CHUNK_LENGTH - ((fe.tag_length + sizeof(struct tagfile_entry)) % TAGFILE_ENTRY_CHUNK_LENGTH); } #ifdef TAGCACHE_STRICT_ALIGN /* Make sure the entry is long aligned. */ if (index[i].seek & 0x03) { logf("tempbuf_sort: alignment error!"); return -3; } #endif if (write(fd, &fe, sizeof(struct tagfile_entry)) != sizeof(struct tagfile_entry)) { logf("tempbuf_sort: write error #1"); return -1; } if (write(fd, index[i].str, length) != length) { logf("tempbuf_sort: write error #2"); return -2; } /* Write some padding. */ if (fe.tag_length - length > 0) write(fd, "XXXXXXXX", fe.tag_length - length); } return i; } inline static struct tempbuf_searchidx* tempbuf_locate(int id) { if (id < 0 || id >= lookup_buffer_depth) return NULL; return lookup[id]; } inline static int tempbuf_find_location(int id) { struct tempbuf_searchidx *entry; entry = tempbuf_locate(id); if (entry == NULL) return -1; return entry->seek; } static bool build_numeric_index(int index_type, struct tagcache_header *h, int tmpfd) { struct master_header tcmh; struct index_entry idx; int masterfd; int masterfd_pos; long *databuf = (long *)tempbuf; int max_entries; int i; max_entries = tempbuf_size / sizeof(long); if (h->entry_count >= max_entries) { logf("not enough space!"); return false; } logf("Building numeric index: %d", index_type); /* Walk through the temporary file. */ lseek(tmpfd, sizeof(struct tagcache_header), SEEK_SET); for (i = 0; i < h->entry_count; i++) { struct temp_file_entry entry; if (read(tmpfd, &entry, sizeof(struct temp_file_entry)) != sizeof(struct temp_file_entry)) { logf("read fail #1"); return false; } /* Insert data in buffer. */ databuf[i] = (long)entry.tag_offset[index_type]; /* Skip to next. */ lseek(tmpfd, entry.data_length, SEEK_CUR); } /* Update the entries in index. */ if ( (masterfd = open_master_fd(&tcmh, true)) < 0) return false; masterfd_pos = lseek(masterfd, tcmh.tch.entry_count * sizeof(struct index_entry), SEEK_CUR); if (masterfd_pos == filesize(masterfd)) { logf("we can't append!"); close(masterfd); return false; } for (i = 0; i < h->entry_count; i++) { int loc = lseek(masterfd, 0, SEEK_CUR); if (read(masterfd, &idx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("read fail #2"); close(masterfd); return false; } idx.tag_seek[index_type] = databuf[i]; /* Write back the updated index. */ lseek(masterfd, loc, SEEK_SET); if (write(masterfd, &idx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("write fail"); close(masterfd); return false; } } close(masterfd); return true; } /** * Return values: * > 0 success * == 0 temporary failure * < 0 fatal error */ static int build_index(int index_type, struct tagcache_header *h, int tmpfd) { int i; struct tagcache_header tch; struct master_header tcmh; struct index_entry idxbuf[IDX_BUF_DEPTH]; int idxbuf_pos; char buf[MAX_PATH]; int fd = -1, masterfd; bool error = false; int init; int masterfd_pos; logf("Building index: %d", index_type); /* Check the number of entries we need to allocate ram for. */ commit_entry_count = h->entry_count + 1; masterfd = open_master_fd(&tcmh, false); if (masterfd >= 0) { commit_entry_count += tcmh.tch.entry_count; close(masterfd); } /* Open the index file, which contains the tag names. */ fd = open_tag_fd(&tch, index_type, true); if (fd >= 0) { logf("tch.datasize=%d", tch.datasize); lookup_buffer_depth = 1 + /* First part */ commit_entry_count + /* Second part */ (tch.datasize / TAGFILE_ENTRY_CHUNK_LENGTH); } else { lookup_buffer_depth = 1 + /* First part */ commit_entry_count + /* Second part */ 0; } logf("lookup_buffer_depth=%d", lookup_buffer_depth); logf("commit_entry_count=%d", commit_entry_count); /* Allocate buffer for all index entries from both old and new * tag files. */ tempbufidx = 0; tempbuf_pos = commit_entry_count * sizeof(struct tempbuf_searchidx); /* Allocate lookup buffer. The first portion of commit_entry_count * contains the new tags in the temporary file and the second * part for locating entries already in the db. * * New tags Old tags * +---------+---------------------------+ * | index | position/ENTRY_CHUNK_SIZE | lookup buffer * +---------+---------------------------+ * * Old tags are inserted to a temporary buffer with position: * tempbuf_insert(position/ENTRY_CHUNK_SIZE, ...); * And new tags with index: * tempbuf_insert(idx, ...); * * The buffer is sorted and written into tag file: * tempbuf_sort(...); * leaving master index locations messed up. * * That is fixed using the lookup buffer for old tags: * new_seek = tempbuf_find_location(old_seek, ...); * and for new tags: * new_seek = tempbuf_find_location(idx); */ lookup = (struct tempbuf_searchidx **)&tempbuf[tempbuf_pos]; tempbuf_pos += lookup_buffer_depth * sizeof(void **); memset(lookup, 0, lookup_buffer_depth * sizeof(void **)); /* And calculate the remaining data space used mainly for storing * tag data (strings). */ tempbuf_left = tempbuf_size - tempbuf_pos - 8; if (tempbuf_left - TAGFILE_ENTRY_AVG_LENGTH * commit_entry_count < 0) { logf("Buffer way too small!"); return 0; } if (fd >= 0) { /** * If tag file contains unique tags (sorted index), we will load * it entirely into memory so we can resort it later for use with * chunked browsing. */ if (tagcache_is_sorted_tag(index_type)) { logf("loading tags..."); for (i = 0; i < tch.entry_count; i++) { struct tagfile_entry entry; int loc = lseek(fd, 0, SEEK_CUR); bool ret; if (read(fd, &entry, sizeof(struct tagfile_entry)) != sizeof(struct tagfile_entry)) { logf("read error #7"); close(fd); return -2; } if (entry.tag_length >= (int)sizeof(buf)) { logf("too long tag #3"); close(fd); return -2; } if (read(fd, buf, entry.tag_length) != entry.tag_length) { logf("read error #8"); close(fd); return -2; } /* Skip deleted entries. */ if (buf[0] == '\0') continue; /** * Save the tag and tag id in the memory buffer. Tag id * is saved so we can later reindex the master lookup * table when the index gets resorted. */ ret = tempbuf_insert(buf, loc/TAGFILE_ENTRY_CHUNK_LENGTH + commit_entry_count, entry.idx_id, tagcache_is_unique_tag(index_type)); if (!ret) { close(fd); return -3; } yield(); } logf("done"); } else tempbufidx = tch.entry_count; } else { /** * Creating new index file to store the tags. No need to preload * anything whether the index type is sorted or not. */ snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, index_type); fd = open(buf, O_WRONLY | O_CREAT | O_TRUNC); if (fd < 0) { logf("%s open fail", buf); return -2; } tch.magic = TAGCACHE_MAGIC; tch.entry_count = 0; tch.datasize = 0; if (write(fd, &tch, sizeof(struct tagcache_header)) != sizeof(struct tagcache_header)) { logf("header write failed"); close(fd); return -2; } } /* Loading the tag lookup file as "master file". */ logf("Loading index file"); masterfd = open(TAGCACHE_FILE_MASTER, O_RDWR); if (masterfd < 0) { logf("Creating new index"); masterfd = open(TAGCACHE_FILE_MASTER, O_WRONLY | O_CREAT | O_TRUNC); if (masterfd < 0) { logf("Failure to create index file"); close(fd); return -2; } /* Write the header (write real values later). */ memset(&tcmh, 0, sizeof(struct master_header)); tcmh.tch = *h; tcmh.tch.entry_count = 0; tcmh.tch.datasize = 0; write(masterfd, &tcmh, sizeof(struct master_header)); init = true; masterfd_pos = lseek(masterfd, 0, SEEK_CUR); current_serial = 0; } else { /** * Master file already exists so we need to process the current * file first. */ init = false; if (read(masterfd, &tcmh, sizeof(struct master_header)) != sizeof(struct master_header) || tcmh.tch.magic != TAGCACHE_MAGIC) { logf("header error"); close(fd); close(masterfd); return -2; } /** * If we reach end of the master file, we need to expand it to * hold new tags. If the current index is not sorted, we can * simply append new data to end of the file. * However, if the index is sorted, we need to update all tag * pointers in the master file for the current index. */ masterfd_pos = lseek(masterfd, tcmh.tch.entry_count * sizeof(struct index_entry), SEEK_CUR); if (masterfd_pos == filesize(masterfd)) { logf("appending..."); init = true; } } /** * Load new unique tags in memory to be sorted later and added * to the master lookup file. */ if (tagcache_is_sorted_tag(index_type)) { lseek(tmpfd, sizeof(struct tagcache_header), SEEK_SET); /* h is the header of the temporary file containing new tags. */ logf("inserting new tags..."); for (i = 0; i < h->entry_count; i++) { struct temp_file_entry entry; if (read(tmpfd, &entry, sizeof(struct temp_file_entry)) != sizeof(struct temp_file_entry)) { logf("read fail #1"); error = true; goto error_exit; } /* Read data. */ if (entry.tag_length[index_type] >= (long)sizeof(buf)) { logf("too long entry!"); error = true; goto error_exit; } lseek(tmpfd, entry.tag_offset[index_type], SEEK_CUR); if (read(tmpfd, buf, entry.tag_length[index_type]) != entry.tag_length[index_type]) { logf("read fail #3"); error = true; goto error_exit; } if (tagcache_is_unique_tag(index_type)) error = !tempbuf_insert(buf, i, -1, true); else error = !tempbuf_insert(buf, i, tcmh.tch.entry_count + i, false); if (error) { logf("insert error"); goto error_exit; } /* Skip to next. */ lseek(tmpfd, entry.data_length - entry.tag_offset[index_type] - entry.tag_length[index_type], SEEK_CUR); yield(); } logf("done"); /* Sort the buffer data and write it to the index file. */ lseek(fd, sizeof(struct tagcache_header), SEEK_SET); i = tempbuf_sort(fd); if (i < 0) goto error_exit; logf("sorted %d tags", i); /** * Now update all indexes in the master lookup file. */ logf("updating indices..."); lseek(masterfd, sizeof(struct master_header), SEEK_SET); for (i = 0; i < tcmh.tch.entry_count; i += idxbuf_pos) { int j; int loc = lseek(masterfd, 0, SEEK_CUR); idxbuf_pos = MIN(tcmh.tch.entry_count - i, IDX_BUF_DEPTH); if (read(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) != (int)sizeof(struct index_entry)*idxbuf_pos) { logf("read fail #2"); error = true; goto error_exit ; } lseek(masterfd, loc, SEEK_SET); for (j = 0; j < idxbuf_pos; j++) { if (idxbuf[j].flag & FLAG_DELETED) { /* We can just ignore deleted entries. */ idxbuf[j].tag_seek[index_type] = 0; continue; } idxbuf[j].tag_seek[index_type] = tempbuf_find_location( idxbuf[j].tag_seek[index_type]/TAGFILE_ENTRY_CHUNK_LENGTH + commit_entry_count); if (idxbuf[j].tag_seek[index_type] < 0) { logf("update error: %d/%d", i+j, tcmh.tch.entry_count); error = true; goto error_exit; } yield(); } /* Write back the updated index. */ if (write(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) != (int)sizeof(struct index_entry)*idxbuf_pos) { logf("write fail"); error = true; goto error_exit; } } logf("done"); } /** * Walk through the temporary file containing the new tags. */ // build_normal_index(h, tmpfd, masterfd, idx); logf("updating new indices..."); lseek(masterfd, masterfd_pos, SEEK_SET); lseek(tmpfd, sizeof(struct tagcache_header), SEEK_SET); lseek(fd, 0, SEEK_END); for (i = 0; i < h->entry_count; i += idxbuf_pos) { int j; idxbuf_pos = MIN(h->entry_count - i, IDX_BUF_DEPTH); if (init) { memset(idxbuf, 0, sizeof(struct index_entry)*IDX_BUF_DEPTH); } else { int loc = lseek(masterfd, 0, SEEK_CUR); if (read(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) != (int)sizeof(struct index_entry)*idxbuf_pos) { logf("read fail #2"); error = true; break ; } lseek(masterfd, loc, SEEK_SET); } /* Read entry headers. */ for (j = 0; j < idxbuf_pos; j++) { if (!tagcache_is_sorted_tag(index_type)) { struct temp_file_entry entry; struct tagfile_entry fe; if (read(tmpfd, &entry, sizeof(struct temp_file_entry)) != sizeof(struct temp_file_entry)) { logf("read fail #1"); error = true; break ; } /* Read data. */ if (entry.tag_length[index_type] >= (int)sizeof(buf)) { logf("too long entry!"); logf("length=%d", entry.tag_length[index_type]); logf("pos=0x%02x", lseek(tmpfd, 0, SEEK_CUR)); error = true; break ; } lseek(tmpfd, entry.tag_offset[index_type], SEEK_CUR); if (read(tmpfd, buf, entry.tag_length[index_type]) != entry.tag_length[index_type]) { logf("read fail #3"); logf("offset=0x%02x", entry.tag_offset[index_type]); logf("length=0x%02x", entry.tag_length[index_type]); error = true; break ; } /* Write to index file. */ idxbuf[j].tag_seek[index_type] = lseek(fd, 0, SEEK_CUR); fe.tag_length = entry.tag_length[index_type]; fe.idx_id = tcmh.tch.entry_count + i + j; write(fd, &fe, sizeof(struct tagfile_entry)); write(fd, buf, fe.tag_length); tempbufidx++; /* Skip to next. */ lseek(tmpfd, entry.data_length - entry.tag_offset[index_type] - entry.tag_length[index_type], SEEK_CUR); } else { /* Locate the correct entry from the sorted array. */ idxbuf[j].tag_seek[index_type] = tempbuf_find_location(i + j); if (idxbuf[j].tag_seek[index_type] < 0) { logf("entry not found (%d)"); error = true; break ; } } } /* Write index. */ if (write(masterfd, idxbuf, sizeof(struct index_entry)*idxbuf_pos) != (int)sizeof(struct index_entry)*idxbuf_pos) { logf("tagcache: write fail #4"); error = true; break ; } yield(); } logf("done"); /* Finally write the header. */ tch.magic = TAGCACHE_MAGIC; tch.entry_count = tempbufidx; tch.datasize = lseek(fd, 0, SEEK_END) - sizeof(struct tagcache_header); lseek(fd, 0, SEEK_SET); write(fd, &tch, sizeof(struct tagcache_header)); if (index_type != tag_filename) h->datasize += tch.datasize; logf("s:%d/%d/%d", index_type, tch.datasize, h->datasize); error_exit: close(fd); close(masterfd); if (error) return -2; return 1; } static bool commit(void) { struct tagcache_header tch; struct master_header tcmh; int i, len, rc; int tmpfd; int masterfd; #ifdef HAVE_DIRCACHE bool dircache_buffer_stolen = false; #endif bool local_allocation = false; logf("committing tagcache"); while (write_lock) sleep(1); tmpfd = open(TAGCACHE_FILE_TEMP, O_RDONLY); if (tmpfd < 0) { logf("nothing to commit"); return true; } /* Load the header. */ len = sizeof(struct tagcache_header); rc = read(tmpfd, &tch, len); if (tch.magic != TAGCACHE_MAGIC || rc != len) { logf("incorrect header"); close(tmpfd); remove(TAGCACHE_FILE_TEMP); return false; } if (tch.entry_count == 0) { logf("nothing to commit"); close(tmpfd); remove(TAGCACHE_FILE_TEMP); return true; } #ifdef HAVE_EEPROM_SETTINGS remove(TAGCACHE_STATEFILE); #endif /* At first be sure to unload the ramcache! */ #ifdef HAVE_TC_RAMCACHE stat.ramcache = false; #endif read_lock++; /* Try to steal every buffer we can :) */ if (tempbuf_size == 0) local_allocation = true; #ifdef HAVE_DIRCACHE if (tempbuf_size == 0) { /* Try to steal the dircache buffer. */ tempbuf = dircache_steal_buffer(&tempbuf_size); tempbuf_size &= ~0x03; if (tempbuf_size > 0) { dircache_buffer_stolen = true; } } #endif #ifdef HAVE_TC_RAMCACHE if (tempbuf_size == 0 && stat.ramcache_allocated > 0) { tempbuf = (char *)(hdr + 1); tempbuf_size = stat.ramcache_allocated - sizeof(struct ramcache_header) - 128; tempbuf_size &= ~0x03; } #endif /* And finally fail if there are no buffers available. */ if (tempbuf_size == 0) { logf("delaying commit until next boot"); stat.commit_delayed = true; close(tmpfd); read_lock--; return false; } logf("commit %d entries...", tch.entry_count); /* Now create the index files. */ stat.commit_step = 0; tch.datasize = 0; stat.commit_delayed = false; for (i = 0; i < TAG_COUNT; i++) { int ret; stat.commit_step++; if (tagcache_is_numeric_tag(i)) { build_numeric_index(i, &tch, tmpfd); continue; } ret = build_index(i, &tch, tmpfd); if (ret <= 0) { close(tmpfd); logf("tagcache failed init"); if (ret < 0) remove_files(); else stat.commit_delayed = true; stat.commit_step = 0; read_lock--; return false; } } close(tmpfd); stat.commit_step = 0; /* Update the master index headers. */ if ( (masterfd = open_master_fd(&tcmh, true)) < 0) { read_lock--; return false; } tcmh.tch.entry_count += tch.entry_count; tcmh.tch.datasize = sizeof(struct master_header) + sizeof(struct index_entry) * tcmh.tch.entry_count + tch.datasize; lseek(masterfd, 0, SEEK_SET); write(masterfd, &tcmh, sizeof(struct master_header)); close(masterfd); logf("tagcache committed"); remove(TAGCACHE_FILE_TEMP); stat.ready = true; if (local_allocation) { tempbuf = NULL; tempbuf_size = 0; } #ifdef HAVE_DIRCACHE /* Rebuild the dircache, if we stole the buffer. */ if (dircache_buffer_stolen) dircache_build(0); #endif #ifdef HAVE_TC_RAMCACHE /* Reload tagcache. */ if (stat.ramcache_allocated > 0) tagcache_start_scan(); #endif read_lock--; return true; } static void allocate_tempbuf(void) { /* Yeah, malloc would be really nice now :) */ tempbuf = (char *)(((long)audiobuf & ~0x03) + 0x04); tempbuf_size = (long)audiobufend - (long)audiobuf - 4; audiobuf += tempbuf_size; } static void free_tempbuf(void) { if (tempbuf_size == 0) return ; audiobuf -= tempbuf_size; tempbuf = NULL; tempbuf_size = 0; } static bool update_current_serial(long serial) { struct master_header myhdr; int fd; if ( (fd = open_master_fd(&myhdr, true)) < 0) return false; myhdr.serial = serial; current_serial = serial; #ifdef HAVE_TC_RAMCACHE if (hdr) hdr->h.serial = serial; #endif /* Write it back */ lseek(fd, 0, SEEK_SET); write(fd, &myhdr, sizeof(struct master_header)); close(fd); return true; } long tagcache_increase_serial(void) { if (!stat.ready) return -2; while (read_lock) sleep(1); if (!update_current_serial(current_serial + 1)) return -1; return current_serial; } long tagcache_get_serial(void) { return current_serial; } static bool modify_numeric_entry(int masterfd, int idx_id, int tag, long data) { struct index_entry idx; if (!stat.ready) return false; if (!tagcache_is_numeric_tag(tag)) return false; if (!get_index(masterfd, idx_id, &idx, false)) return false; idx.tag_seek[tag] = data; idx.flag |= FLAG_DIRTYNUM; return write_index(masterfd, idx_id, &idx); } bool tagcache_modify_numeric_entry(struct tagcache_search *tcs, int tag, long data) { struct master_header myhdr; if (tcs->masterfd < 0) { if ( (tcs->masterfd = open_master_fd(&myhdr, true)) < 0) return false; } return modify_numeric_entry(tcs->masterfd, tcs->idx_id, tag, data); } static bool write_tag(int fd, const char *tagstr, const char *datastr) { char buf[256]; int i; snprintf(buf, sizeof buf, "%s=\"", tagstr); for (i = strlen(buf); i < (long)sizeof(buf)-2; i++) { if (*datastr == '\0') break; if (*datastr == '"') { buf[i] = '\\'; datastr++; continue; } buf[i] = *(datastr++); } strcpy(&buf[i], "\" "); write(fd, buf, i + 2); return true; } static bool read_tag(char *dest, long size, const char *src, const char *tagstr) { int pos; char current_tag[32]; while (*src != '\0') { /* Skip all whitespace */ while (*src == ' ') src++; if (*src == '\0') break; pos = 0; /* Read in tag name */ while (*src != '=' && *src != ' ') { current_tag[pos] = *src; src++; pos++; if (*src == '\0' || pos >= (long)sizeof(current_tag)) return false; } current_tag[pos] = '\0'; /* Read in tag data */ /* Find the start. */ while (*src != '"' && *src != '\0') src++; if (*src == '\0' || *(++src) == '\0') return false; /* Read the data. */ for (pos = 0; pos < size; pos++) { if (*src == '\0') break; if (*src == '\\' && *(src+1) == '"') { dest[pos] = '"'; src += 2; continue; } dest[pos] = *src; if (*src == '"') { src++; break; } if (*src == '\0') break; src++; } dest[pos] = '\0'; if (!strcasecmp(tagstr, current_tag)) return true; } return false; } static bool parse_changelog_line(int masterfd, const char *buf) { struct index_entry idx; char tag_data[MAX_PATH]; int idx_id; const int import_tags[] = { tag_playcount, tag_playtime, tag_lastplayed }; int i; if (*buf == '#') return true; if (!read_tag(tag_data, sizeof tag_data, buf, "filename")) { logf("filename missing"); logf("-> %s", buf); return false; } idx_id = find_index(tag_data); if (idx_id < 0) { logf("entry not found"); return false; } if (!get_index(masterfd, idx_id, &idx, false)) { logf("failed to retrieve index entry"); return false; } /* Stop if tag has already been modified. */ if (idx.flag & FLAG_DIRTYNUM) return false; logf("import: %s", tag_data); idx.flag |= FLAG_DIRTYNUM; for (i = 0; i < (long)(sizeof(import_tags)/sizeof(import_tags[0])); i++) { int data; if (!read_tag(tag_data, sizeof tag_data, buf, tagcache_tag_to_str(import_tags[i]))) { continue; } data = atoi(tag_data); if (data < 0) continue; idx.tag_seek[import_tags[i]] = data; if (import_tags[i] == tag_lastplayed && data > current_serial) current_serial = data; } return write_index(masterfd, idx_id, &idx); } bool tagcache_import_changelog(void) { struct master_header myhdr; struct tagcache_header tch; int clfd, masterfd; char buf[2048]; int pos = 0; if (!stat.ready) return false; while (read_lock) sleep(1); clfd = open(TAGCACHE_FILE_CHANGELOG, O_RDONLY); if (clfd < 0) { logf("failure to open changelog"); return false; } if ( (masterfd = open_master_fd(&myhdr, true)) < 0) { close(clfd); return false; } write_lock++; filenametag_fd = open_tag_fd(&tch, tag_filename, false); /* Fast readline */ while ( 1 ) { char *p; char *next = NULL; int rc; rc = read(clfd, &buf[pos], sizeof(buf)-pos-1); if (rc >= 0) buf[pos+rc] = '\0'; if ( (p = strchr(buf, '\r')) != NULL) { *p = '\0'; next = ++p; } else p = buf; if ( (p = strchr(p, '\n')) != NULL) { *p = '\0'; next = ++p; } parse_changelog_line(masterfd, buf); if (next) { pos = sizeof(buf) - ((long)next - (long)buf) - 1; memmove(buf, next, pos); } else break ; } close(clfd); close(masterfd); if (filenametag_fd >= 0) close(filenametag_fd); write_lock--; update_current_serial(current_serial); return true; } bool tagcache_create_changelog(struct tagcache_search *tcs) { struct master_header myhdr; struct index_entry idx; char buf[MAX_PATH]; char temp[32]; int clfd; int i, j; if (!stat.ready) return false; if (!tagcache_search(tcs, tag_filename)) return false; /* Initialize the changelog */ clfd = open(TAGCACHE_FILE_CHANGELOG, O_WRONLY | O_CREAT | O_TRUNC); if (clfd < 0) { logf("failure to open changelog"); return false; } if (tcs->masterfd < 0) { if ( (tcs->masterfd = open_master_fd(&myhdr, false)) < 0) return false; } else { lseek(tcs->masterfd, 0, SEEK_SET); read(tcs->masterfd, &myhdr, sizeof(struct master_header)); } write(clfd, "## Changelog version 1\n", 23); for (i = 0; i < myhdr.tch.entry_count; i++) { if (read(tcs->masterfd, &idx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("read error #9"); tagcache_search_finish(tcs); close(clfd); return false; } /* Skip until the entry found has been modified. */ if (! (idx.flag & FLAG_DIRTYNUM) ) continue; /* Now retrieve all tags. */ for (j = 0; j < TAG_COUNT; j++) { if (tagcache_is_numeric_tag(j)) { snprintf(temp, sizeof temp, "%d", idx.tag_seek[j]); write_tag(clfd, tagcache_tag_to_str(j), temp); continue; } tcs->type = j; tagcache_retrieve(tcs, i, buf, sizeof buf); write_tag(clfd, tagcache_tag_to_str(j), buf); } write(clfd, "\n", 1); yield(); } close(clfd); tagcache_search_finish(tcs); return true; } static bool delete_entry(long idx_id) { int fd; int tag, i; struct index_entry idx, myidx; struct master_header myhdr; char buf[MAX_PATH]; int in_use[TAG_COUNT]; logf("delete_entry(): %d", idx_id); #ifdef HAVE_TC_RAMCACHE /* At first mark the entry removed from ram cache. */ if (hdr) hdr->indices[idx_id].flag |= FLAG_DELETED; #endif if ( (fd = open_master_fd(&myhdr, true) ) < 0) return false; lseek(fd, idx_id * sizeof(struct index_entry), SEEK_CUR); if (read(fd, &myidx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("delete_entry(): read error"); close(fd); return false; } myidx.flag |= FLAG_DELETED; lseek(fd, -sizeof(struct index_entry), SEEK_CUR); if (write(fd, &myidx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("delete_entry(): write_error"); close(fd); return false; } /* Now check which tags are no longer in use (if any) */ for (tag = 0; tag < TAG_COUNT; tag++) in_use[tag] = 0; lseek(fd, sizeof(struct master_header), SEEK_SET); for (i = 0; i < myhdr.tch.entry_count; i++) { if (read(fd, &idx, sizeof(struct index_entry)) != sizeof(struct index_entry)) { logf("delete_entry(): read error #2"); close(fd); return false; } if (idx.flag & FLAG_DELETED) continue; for (tag = 0; tag < TAG_COUNT; tag++) { if (tagcache_is_numeric_tag(tag)) continue; if (idx.tag_seek[tag] == myidx.tag_seek[tag]) in_use[tag]++; } } close(fd); /* Now delete all tags no longer in use. */ for (tag = 0; tag < TAG_COUNT; tag++) { if (tagcache_is_numeric_tag(tag)) continue; if (in_use[tag]) { logf("in use: %d/%d", tag, in_use[tag]); continue; } /* Open the index file, which contains the tag names. */ snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, tag); fd = open(buf, O_RDWR); if (fd < 0) { logf("open failed"); return false; } /* Skip the header block */ lseek(fd, myidx.tag_seek[tag] + sizeof(struct tagfile_entry), SEEK_SET); read(fd, buf, 10); buf[10]='\0'; logf("TAG:%s", buf); lseek(fd, -10, SEEK_CUR); /* Write first data byte in tag as \0 */ write(fd, "", 1); /* Now tag data has been removed */ close(fd); } return true; } /** * Returns true if there is an event waiting in the queue * that requires the current operation to be aborted. */ static bool check_event_queue(void) { struct event ev; queue_wait_w_tmo(&tagcache_queue, &ev, 0); switch (ev.id) { case Q_STOP_SCAN: case SYS_POWEROFF: case SYS_USB_CONNECTED: /* Put the event back into the queue. */ queue_post(&tagcache_queue, ev.id, ev.data); return true; } return false; } #ifdef HAVE_TC_RAMCACHE static bool allocate_tagcache(void) { struct master_header tcmh; int fd; /* Load the header. */ if ( (fd = open_master_fd(&tcmh, false)) < 0) { hdr = NULL; return false; } close(fd); /** * Now calculate the required cache size plus * some extra space for alignment fixes. */ stat.ramcache_allocated = tcmh.tch.datasize + 128 + TAGCACHE_RESERVE + sizeof(struct ramcache_header) + TAG_COUNT*sizeof(void *); hdr = buffer_alloc(stat.ramcache_allocated + 128); memset(hdr, 0, sizeof(struct ramcache_header)); memcpy(&hdr->h, &tcmh, sizeof(struct master_header)); hdr->indices = (struct index_entry *)(hdr + 1); logf("tagcache: %d bytes allocated.", stat.ramcache_allocated); return true; } # ifdef HAVE_EEPROM_SETTINGS static bool tagcache_dumpload(void) { struct statefile_header shdr; int fd, rc; long offpos; int i; fd = open(TAGCACHE_STATEFILE, O_RDONLY); if (fd < 0) { logf("no tagcache statedump"); return false; } /* Check the statefile memory placement */ hdr = buffer_alloc(0); rc = read(fd, &shdr, sizeof(struct statefile_header)); if (rc != sizeof(struct statefile_header) /* || (long)hdr != (long)shdr.hdr */) { logf("incorrect statefile"); hdr = NULL; close(fd); return false; } offpos = (long)hdr - (long)shdr.hdr; /* Lets allocate real memory and load it */ hdr = buffer_alloc(shdr.stat.ramcache_allocated); rc = read(fd, hdr, shdr.stat.ramcache_allocated); close(fd); if (rc != shdr.stat.ramcache_allocated) { logf("read failure!"); hdr = NULL; return false; } memcpy(&stat, &shdr.stat, sizeof(struct tagcache_stat)); /* Now fix the pointers */ hdr->indices = (struct index_entry *)((long)hdr->indices + offpos); for (i = 0; i < TAG_COUNT; i++) hdr->tags[i] += offpos; return true; } static bool tagcache_dumpsave(void) { struct statefile_header shdr; int fd; if (!stat.ramcache) return false; fd = open(TAGCACHE_STATEFILE, O_WRONLY | O_CREAT | O_TRUNC); if (fd < 0) { logf("failed to create a statedump"); return false; } /* Create the header */ shdr.hdr = hdr; memcpy(&shdr.stat, &stat, sizeof(struct tagcache_stat)); write(fd, &shdr, sizeof(struct statefile_header)); /* And dump the data too */ write(fd, hdr, stat.ramcache_allocated); close(fd); return true; } # endif static bool load_tagcache(void) { struct tagcache_header *tch; long bytesleft = stat.ramcache_allocated; struct index_entry *idx; int rc, fd; char *p; int i, tag; int yield_count = 0; # ifdef HAVE_DIRCACHE while (dircache_is_initializing()) sleep(1); # endif logf("loading tagcache to ram..."); fd = open(TAGCACHE_FILE_MASTER, O_RDONLY); if (fd < 0) { logf("tagcache open failed"); return false; } if (read(fd, &hdr->h, sizeof(struct master_header)) != sizeof(struct master_header) || hdr->h.tch.magic != TAGCACHE_MAGIC) { logf("incorrect header"); return false; } idx = hdr->indices; /* Load the master index table. */ for (i = 0; i < hdr->h.tch.entry_count; i++) { rc = read(fd, idx, sizeof(struct index_entry)); if (rc != sizeof(struct index_entry)) { logf("read error #10"); close(fd); return false; } bytesleft -= sizeof(struct index_entry); if (bytesleft < 0 || ((long)idx - (long)hdr->indices) >= stat.ramcache_allocated) { logf("too big tagcache."); close(fd); return false; } idx++; } close(fd); /* Load the tags. */ p = (char *)idx; for (tag = 0; tag < TAG_COUNT; tag++) { struct tagfile_entry *fe; char buf[MAX_PATH]; if (tagcache_is_numeric_tag(tag)) continue ; //p = ((void *)p+1); p = (char *)((long)p & ~0x03) + 0x04; hdr->tags[tag] = p; /* Check the header. */ tch = (struct tagcache_header *)p; p += sizeof(struct tagcache_header); if ( (fd = open_tag_fd(tch, tag, false)) < 0) return false; for (hdr->entry_count[tag] = 0; hdr->entry_count[tag] < tch->entry_count; hdr->entry_count[tag]++) { long pos; if (yield_count++ == 100) { yield(); /* Abort if we got a critical event in queue */ if (check_event_queue()) return false; yield_count = 0; } fe = (struct tagfile_entry *)p; pos = lseek(fd, 0, SEEK_CUR); rc = read(fd, fe, sizeof(struct tagfile_entry)); if (rc != sizeof(struct tagfile_entry)) { /* End of lookup table. */ logf("read error #11"); close(fd); return false; } /* We have a special handling for the filename tags. */ if (tag == tag_filename) { # ifdef HAVE_DIRCACHE const struct dircache_entry *dc; # endif // FIXME: This is wrong! // idx = &hdr->indices[hdr->entry_count[i]]; idx = &hdr->indices[fe->idx_id]; if (fe->tag_length >= (long)sizeof(buf)-1) { read(fd, buf, 10); buf[10] = '\0'; logf("TAG:%s", buf); logf("too long filename"); close(fd); return false; } rc = read(fd, buf, fe->tag_length); if (rc != fe->tag_length) { logf("read error #12"); close(fd); return false; } /* Check if the entry has already been removed */ if (idx->flag & FLAG_DELETED) continue; /* This flag must not be used yet. */ if (idx->flag & FLAG_DIRCACHE) { logf("internal error!"); close(fd); return false; } if (idx->tag_seek[tag] != pos) { logf("corrupt data structures!"); close(fd); return false; } # ifdef HAVE_DIRCACHE if (dircache_is_enabled()) { dc = dircache_get_entry_ptr(buf); if (dc == NULL) { logf("Entry no longer valid."); logf("-> %s", buf); delete_entry(fe->idx_id); continue ; } idx->flag |= FLAG_DIRCACHE; FLAG_SET_ATTR(idx->flag, fe->idx_id); idx->tag_seek[tag_filename] = (long)dc; } else # endif { # if 0 /* Maybe we could enable this for flash players. Too slow otherwise. */ /* Check if entry has been removed. */ if (global_settings.tagcache_autoupdate) { int testfd; testfd = open(buf, O_RDONLY); if (testfd < 0) { logf("Entry no longer valid."); logf("-> %s", buf); delete_entry(fe->idx_id); continue; } close(testfd); } # endif } continue ; } bytesleft -= sizeof(struct tagfile_entry) + fe->tag_length; if (bytesleft < 0) { logf("too big tagcache #2"); logf("tl: %d", fe->tag_length); logf("bl: %d", bytesleft); close(fd); return false; } p = fe->tag_data; rc = read(fd, fe->tag_data, fe->tag_length); p += rc; if (rc != fe->tag_length) { logf("read error #13"); logf("rc=0x%04x", rc); // 0x431 logf("len=0x%04x", fe->tag_length); // 0x4000 logf("pos=0x%04x", lseek(fd, 0, SEEK_CUR)); // 0x433 logf("tag=0x%02x", tag); // 0x00 close(fd); return false; } } close(fd); } stat.ramcache_used = stat.ramcache_allocated - bytesleft; logf("tagcache loaded into ram!"); return true; } #endif /* HAVE_TC_RAMCACHE */ static bool check_deleted_files(void) { int fd, testfd; char buf[MAX_PATH]; struct tagfile_entry tfe; logf("reverse scan..."); snprintf(buf, sizeof buf, TAGCACHE_FILE_INDEX, tag_filename); fd = open(buf, O_RDONLY); if (fd < 0) { logf("%s open fail", buf); return false; } lseek(fd, sizeof(struct tagcache_header), SEEK_SET); while (read(fd, &tfe, sizeof(struct tagfile_entry)) == sizeof(struct tagfile_entry) && !check_event_queue()) { if (tfe.tag_length >= (long)sizeof(buf)-1) { logf("too long tag"); close(fd); return false; } if (read(fd, buf, tfe.tag_length) != tfe.tag_length) { logf("read error #14"); close(fd); return false; } /* Now check if the file exists. */ testfd = open(buf, O_RDONLY); if (testfd < 0) { logf("Entry no longer valid."); logf("-> %s", buf); delete_entry(tfe.idx_id); } close(testfd); } close(fd); logf("done"); return true; } static bool check_dir(const char *dirname) { DIRCACHED *dir; int len; int success = false; dir = opendir_cached(dirname); if (!dir) { logf("tagcache: opendir_cached() failed"); return false; } /* Recursively scan the dir. */ while (!check_event_queue()) { struct dircache_entry *entry; entry = readdir_cached(dir); if (entry == NULL) { success = true; break ; } if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, "..")) continue; yield(); len = strlen(curpath); snprintf(&curpath[len], curpath_size - len, "/%s", entry->d_name); processed_dir_count++; if (entry->attribute & ATTR_DIRECTORY) check_dir(curpath); else #if defined(HAVE_TC_RAMCACHE) && defined(HAVE_DIRCACHE) add_tagcache(curpath, dir->internal_entry); #else add_tagcache(curpath); #endif curpath[len] = '\0'; } closedir_cached(dir); return success; } static void build_tagcache(void) { struct tagcache_header header; bool ret; curpath[0] = '\0'; data_size = 0; total_entry_count = 0; processed_dir_count = 0; #ifdef HAVE_DIRCACHE while (dircache_is_initializing()) sleep(1); #endif logf("updating tagcache"); cachefd = open(TAGCACHE_FILE_TEMP, O_RDONLY); if (cachefd >= 0) { logf("skipping, cache already waiting for commit"); close(cachefd); return ; } cachefd = open(TAGCACHE_FILE_TEMP, O_RDWR | O_CREAT | O_TRUNC); if (cachefd < 0) { logf("master file open failed"); return ; } filenametag_fd = open_tag_fd(&header, tag_filename, false); cpu_boost(true); /* Scan for new files. */ memset(&header, 0, sizeof(struct tagcache_header)); write(cachefd, &header, sizeof(struct tagcache_header)); //strcpy(curpath, "/Best"); ret = check_dir("/"); /* Write the header. */ header.magic = TAGCACHE_MAGIC; header.datasize = data_size; header.entry_count = total_entry_count; lseek(cachefd, 0, SEEK_SET); write(cachefd, &header, sizeof(struct tagcache_header)); close(cachefd); if (filenametag_fd >= 0) { close(filenametag_fd); filenametag_fd = -1; } if (!ret) { logf("Aborted."); cpu_boost(false); return ; } /* Commit changes to the database. */ if (commit()) { remove(TAGCACHE_FILE_TEMP); logf("tagcache built!"); } #ifdef HAVE_TC_RAMCACHE if (hdr) { /* Import runtime statistics if we just initialized the db. */ if (hdr->h.serial == 0) queue_post(&tagcache_queue, Q_IMPORT_CHANGELOG, 0); } #endif cpu_boost(false); } #ifdef HAVE_TC_RAMCACHE static void load_ramcache(void) { if (!hdr) return ; cpu_boost(true); /* At first we should load the cache (if exists). */ stat.ramcache = load_tagcache(); if (!stat.ramcache) { /* If loading failed, it must indicate some problem with the db * so disable it entirely to prevent further issues. */ stat.ready = false; hdr = NULL; } cpu_boost(false); } void tagcache_unload_ramcache(void) { stat.ramcache = false; /* Just to make sure there is no statefile present. */ // remove(TAGCACHE_STATEFILE); } #endif static bool check_all_headers(void) { struct master_header myhdr; struct tagcache_header tch; int tag; int fd; if ( (fd = open_master_fd(&myhdr, false)) < 0) return false; close(fd); current_serial = myhdr.serial; for (tag = 0; tag < TAG_COUNT; tag++) { if (tagcache_is_numeric_tag(tag)) continue; if ( (fd = open_tag_fd(&tch, tag, false)) < 0) return false; close(fd); } return true; } static void tagcache_thread(void) { struct event ev; bool check_done = false; /* If the previous cache build/update was interrupted, commit * the changes first in foreground. */ cpu_boost(true); allocate_tempbuf(); commit(); free_tempbuf(); #ifdef HAVE_TC_RAMCACHE # ifdef HAVE_EEPROM_SETTINGS if (firmware_settings.initialized && firmware_settings.disk_clean) check_done = tagcache_dumpload(); remove(TAGCACHE_STATEFILE); # endif /* Allocate space for the tagcache if found on disk. */ if (global_settings.tagcache_ram && !stat.ramcache) allocate_tagcache(); #endif cpu_boost(false); stat.initialized = true; /* Don't delay bootup with the header check but do it on background. */ sleep(HZ); stat.ready = check_all_headers(); while (1) { queue_wait_w_tmo(&tagcache_queue, &ev, HZ); switch (ev.id) { case Q_IMPORT_CHANGELOG: tagcache_import_changelog(); break; case Q_REBUILD: remove_files(); build_tagcache(); break; case Q_UPDATE: build_tagcache(); #ifdef HAVE_TC_RAMCACHE load_ramcache(); #endif check_deleted_files(); break ; case Q_START_SCAN: check_done = false; case SYS_TIMEOUT: if (check_done || !stat.ready) break ; #ifdef HAVE_TC_RAMCACHE if (!stat.ramcache && global_settings.tagcache_ram) { load_ramcache(); if (stat.ramcache && global_settings.tagcache_autoupdate) build_tagcache(); } else #endif if (global_settings.tagcache_autoupdate) { build_tagcache(); /* Don't do auto removal without dircache (very slow). */ #ifdef HAVE_DIRCACHE if (dircache_is_enabled()) check_deleted_files(); #endif } logf("tagcache check done"); check_done = true; break ; case Q_STOP_SCAN: break ; case SYS_POWEROFF: break ; #ifndef SIMULATOR case SYS_USB_CONNECTED: logf("USB: TagCache"); usb_acknowledge(SYS_USB_CONNECTED_ACK); usb_wait_for_disconnect(&tagcache_queue); break ; #endif } } } bool tagcache_prepare_shutdown(void) { if (tagcache_get_commit_step() > 0) return false; tagcache_stop_scan(); while (read_lock || write_lock) sleep(1); return true; } void tagcache_shutdown(void) { #ifdef HAVE_EEPROM_SETTINGS if (stat.ramcache) tagcache_dumpsave(); #endif } static int get_progress(void) { int total_count = -1; #ifdef HAVE_DIRCACHE if (dircache_is_enabled()) { total_count = dircache_get_entry_count(); } else #endif #ifdef HAVE_TC_RAMCACHE { if (hdr && stat.ramcache) total_count = hdr->h.tch.entry_count; } #endif if (total_count < 0) return -1; return processed_dir_count * 100 / total_count; } struct tagcache_stat* tagcache_get_stat(void) { stat.progress = get_progress(); stat.processed_entries = processed_dir_count; return &stat; } void tagcache_start_scan(void) { queue_post(&tagcache_queue, Q_START_SCAN, 0); } bool tagcache_update(void) { if (!stat.ready) return false; queue_post(&tagcache_queue, Q_UPDATE, 0); gui_syncsplash(HZ*2, true, str(LANG_TAGCACHE_FORCE_UPDATE_SPLASH)); return false; } bool tagcache_rebuild(void) { queue_post(&tagcache_queue, Q_REBUILD, 0); gui_syncsplash(HZ*2, true, str(LANG_TAGCACHE_FORCE_UPDATE_SPLASH)); return false; } void tagcache_stop_scan(void) { queue_post(&tagcache_queue, Q_STOP_SCAN, 0); } #ifdef HAVE_TC_RAMCACHE bool tagcache_is_ramcache(void) { return stat.ramcache; } #endif void tagcache_init(void) { memset(&stat, 0, sizeof(struct tagcache_stat)); filenametag_fd = -1; current_serial = 0; write_lock = read_lock = 0; queue_init(&tagcache_queue, true); create_thread(tagcache_thread, tagcache_stack, sizeof(tagcache_stack), tagcache_thread_name IF_PRIO(, PRIORITY_BACKGROUND)); } bool tagcache_is_initialized(void) { return stat.initialized; } int tagcache_get_commit_step(void) { return stat.commit_step; }