/* $NetBSD: mdb_stat.c,v 1.1.1.3.6.1 2019/08/10 06:17:15 martin Exp $ */ /* mdb_stat.c - memory-mapped database status tool */ /* * Copyright 2011-2018 Howard Chu, Symas Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted only as authorized by the OpenLDAP * Public License. * * A copy of this license is available in the file LICENSE in the * top-level directory of the distribution or, alternatively, at * . */ #include #include #include #include #include "lmdb.h" #ifdef _WIN32 #define Z "I" #else #define Z "z" #endif static void prstat(MDB_stat *ms) { #if 0 printf(" Page size: %u\n", ms->ms_psize); #endif printf(" Tree depth: %u\n", ms->ms_depth); printf(" Branch pages: %"Z"u\n", ms->ms_branch_pages); printf(" Leaf pages: %"Z"u\n", ms->ms_leaf_pages); printf(" Overflow pages: %"Z"u\n", ms->ms_overflow_pages); printf(" Entries: %"Z"u\n", ms->ms_entries); } static void usage(char *prog) { fprintf(stderr, "usage: %s [-V] [-n] [-e] [-r[r]] [-f[f[f]]] [-a|-s subdb] dbpath\n", prog); exit(EXIT_FAILURE); } int main(int argc, char *argv[]) { int i, rc; MDB_env *env; MDB_txn *txn; MDB_dbi dbi; MDB_stat mst; MDB_envinfo mei; char *prog = argv[0]; char *envname; char *subname = NULL; int alldbs = 0, envinfo = 0, envflags = 0, freinfo = 0, rdrinfo = 0; if (argc < 2) { usage(prog); } /* -a: print stat of main DB and all subDBs * -s: print stat of only the named subDB * -e: print env info * -f: print freelist info * -r: print reader info * -n: use NOSUBDIR flag on env_open * -V: print version and exit * (default) print stat of only the main DB */ while ((i = getopt(argc, argv, "Vaefnrs:")) != EOF) { switch(i) { case 'V': printf("%s\n", MDB_VERSION_STRING); exit(0); break; case 'a': if (subname) usage(prog); alldbs++; break; case 'e': envinfo++; break; case 'f': freinfo++; break; case 'n': envflags |= MDB_NOSUBDIR; break; case 'r': rdrinfo++; break; case 's': if (alldbs) usage(prog); subname = optarg; break; default: usage(prog); } } if (optind != argc - 1) usage(prog); envname = argv[optind]; rc = mdb_env_create(&env); if (rc) { fprintf(stderr, "mdb_env_create failed, error %d %s\n", rc, mdb_strerror(rc)); return EXIT_FAILURE; } if (alldbs || subname) { mdb_env_set_maxdbs(env, 4); } rc = mdb_env_open(env, envname, envflags | MDB_RDONLY, 0664); if (rc) { fprintf(stderr, "mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc)); goto env_close; } if (envinfo) { (void)mdb_env_stat(env, &mst); (void)mdb_env_info(env, &mei); printf("Environment Info\n"); printf(" Map address: %p\n", mei.me_mapaddr); printf(" Map size: %"Z"u\n", mei.me_mapsize); printf(" Page size: %u\n", mst.ms_psize); printf(" Max pages: %"Z"u\n", mei.me_mapsize / mst.ms_psize); printf(" Number of pages used: %"Z"u\n", mei.me_last_pgno+1); printf(" Last transaction ID: %"Z"u\n", mei.me_last_txnid); printf(" Max readers: %u\n", mei.me_maxreaders); printf(" Number of readers used: %u\n", mei.me_numreaders); } if (rdrinfo) { printf("Reader Table Status\n"); rc = mdb_reader_list(env, (MDB_msg_func *)fputs, stdout); if (rdrinfo > 1) { int dead; mdb_reader_check(env, &dead); printf(" %d stale readers cleared.\n", dead); rc = mdb_reader_list(env, (MDB_msg_func *)fputs, stdout); } if (!(subname || alldbs || freinfo)) goto env_close; } rc = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn); if (rc) { fprintf(stderr, "mdb_txn_begin failed, error %d %s\n", rc, mdb_strerror(rc)); goto env_close; } if (freinfo) { MDB_cursor *cursor; MDB_val key, data; size_t pages = 0, *iptr; printf("Freelist Status\n"); dbi = 0; rc = mdb_cursor_open(txn, dbi, &cursor); if (rc) { fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc)); goto txn_abort; } rc = mdb_stat(txn, dbi, &mst); if (rc) { fprintf(stderr, "mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc)); goto txn_abort; } prstat(&mst); while ((rc = mdb_cursor_get(cursor, &key, &data, MDB_NEXT)) == 0) { iptr = data.mv_data; pages += *iptr; if (freinfo > 1) { char *bad = ""; size_t pg, prev; ssize_t i, j, span = 0; j = *iptr++; for (i = j, prev = 1; --i >= 0; ) { pg = iptr[i]; if (pg <= prev) bad = " [bad sequence]"; prev = pg; pg += span; for (; i >= span && iptr[i-span] == pg; span++, pg++) ; } printf(" Transaction %"Z"u, %"Z"d pages, maxspan %"Z"d%s\n", *(size_t *)key.mv_data, j, span, bad); if (freinfo > 2) { for (--j; j >= 0; ) { pg = iptr[j]; for (span=1; --j >= 0 && iptr[j] == pg+span; span++) ; printf(span>1 ? " %9"Z"u[%"Z"d]\n" : " %9"Z"u\n", pg, span); } } } } mdb_cursor_close(cursor); printf(" Free pages: %"Z"u\n", pages); } rc = mdb_open(txn, subname, 0, &dbi); if (rc) { fprintf(stderr, "mdb_open failed, error %d %s\n", rc, mdb_strerror(rc)); goto txn_abort; } rc = mdb_stat(txn, dbi, &mst); if (rc) { fprintf(stderr, "mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc)); goto txn_abort; } printf("Status of %s\n", subname ? subname : "Main DB"); prstat(&mst); if (alldbs) { MDB_cursor *cursor; MDB_val key; rc = mdb_cursor_open(txn, dbi, &cursor); if (rc) { fprintf(stderr, "mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc)); goto txn_abort; } while ((rc = mdb_cursor_get(cursor, &key, NULL, MDB_NEXT_NODUP)) == 0) { char *str; MDB_dbi db2; if (memchr(key.mv_data, '\0', key.mv_size)) continue; str = malloc(key.mv_size+1); memcpy(str, key.mv_data, key.mv_size); str[key.mv_size] = '\0'; rc = mdb_open(txn, str, 0, &db2); if (rc == MDB_SUCCESS) printf("Status of %s\n", str); free(str); if (rc) continue; rc = mdb_stat(txn, db2, &mst); if (rc) { fprintf(stderr, "mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc)); goto txn_abort; } prstat(&mst); mdb_close(env, db2); } mdb_cursor_close(cursor); } if (rc == MDB_NOTFOUND) rc = MDB_SUCCESS; mdb_close(env, dbi); txn_abort: mdb_txn_abort(txn); env_close: mdb_env_close(env); return rc ? EXIT_FAILURE : EXIT_SUCCESS; }