/*- * See the file LICENSE for redistribution information. * * Copyright (c) 1996, 1997, 1998, 1999, 2000 * Sleepycat Software. All rights reserved. */ #include "db_config.h" #ifndef lint static const char revid[] = "$Id: env_open.c,v 11.34 2000/12/21 19:20:00 bostic Exp $"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES #include #include #include #include #include #endif #include "db_int.h" #include "db_page.h" #include "db_shash.h" #include "btree.h" #include "hash.h" #include "qam.h" #include "lock.h" #include "log.h" #include "mp.h" #include "txn.h" #include "clib_ext.h" static int __dbenv_config __P((DB_ENV *, const char *, u_int32_t)); static int __dbenv_refresh __P((DB_ENV *)); static int __db_home __P((DB_ENV *, const char *, u_int32_t)); static int __db_parse __P((DB_ENV *, char *)); static int __db_tmp_open __P((DB_ENV *, u_int32_t, char *, DB_FH *)); /* * db_version -- * Return version information. */ char * db_version(majverp, minverp, patchp) int *majverp, *minverp, *patchp; { if (majverp != NULL) *majverp = DB_VERSION_MAJOR; if (minverp != NULL) *minverp = DB_VERSION_MINOR; if (patchp != NULL) *patchp = DB_VERSION_PATCH; return ((char *)DB_VERSION_STRING); } /* * __dbenv_open -- * Initialize an environment. * * PUBLIC: int __dbenv_open __P((DB_ENV *, const char *, u_int32_t, int)); */ int __dbenv_open(dbenv, db_home, flags, mode) DB_ENV *dbenv; const char *db_home; u_int32_t flags; int mode; { DB_ENV *rm_dbenv; int ret; u_int32_t init_flags; #undef OKFLAGS #define OKFLAGS \ DB_CREATE | DB_INIT_CDB | DB_INIT_LOCK | DB_INIT_LOG | \ DB_INIT_MPOOL | DB_INIT_TXN | DB_JOINENV | DB_LOCKDOWN | \ DB_PRIVATE | DB_RECOVER | DB_RECOVER_FATAL | DB_SYSTEM_MEM | \ DB_THREAD | DB_USE_ENVIRON | DB_USE_ENVIRON_ROOT #undef OKFLAGS_CDB #define OKFLAGS_CDB \ DB_CREATE | DB_INIT_CDB | DB_INIT_MPOOL | DB_LOCKDOWN | \ DB_PRIVATE | DB_SYSTEM_MEM | DB_THREAD | \ DB_USE_ENVIRON | DB_USE_ENVIRON_ROOT /* * Flags saved in the init_flags field of the environment, representing * flags to DBENV->set_flags and DBENV->open that need to be set. */ #define DB_INITENV_CDB 0x0001 /* DB_INIT_CDB */ #define DB_INITENV_CDB_ALLDB 0x0002 /* DB_INIT_CDB_ALLDB */ #define DB_INITENV_LOCK 0x0004 /* DB_INIT_LOCK */ #define DB_INITENV_LOG 0x0008 /* DB_INIT_LOG */ #define DB_INITENV_MPOOL 0x0010 /* DB_INIT_MPOOL */ #define DB_INITENV_TXN 0x0020 /* DB_INIT_TXN */ if ((ret = __db_fchk(dbenv, "DBENV->open", flags, OKFLAGS)) != 0) return (ret); if (LF_ISSET(DB_INIT_CDB) && (ret = __db_fchk(dbenv, "DBENV->open", flags, OKFLAGS_CDB)) != 0) return (ret); if ((ret = __db_fcchk(dbenv, "DBENV->open", flags, DB_PRIVATE, DB_SYSTEM_MEM)) != 0) return (ret); if ((ret = __db_fcchk(dbenv, "DBENV->open", flags, DB_JOINENV, DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN | DB_PRIVATE)) != 0) return (ret); /* * If we're doing recovery, destroy the environment so that we create * all the regions from scratch. I'd like to reuse already created * regions, but that's hard. We would have to create the environment * region from scratch, at least, as we have no way of knowing if its * linked lists are corrupted. * * I suppose we could set flags while modifying those links, but that * is going to be difficult to get right. The major concern I have * is if the application stomps the environment with a rogue pointer. * We have no way of detecting that, and we could be forced into a * situation where we start up and then crash, repeatedly. * * Note that we do not check any flags like DB_PRIVATE before calling * remove. We don't care if the current environment was private or * not, we just want to nail any files that are left-over for whatever * reason, from whatever session. */ if (LF_ISSET(DB_RECOVER | DB_RECOVER_FATAL)) { if ((ret = db_env_create(&rm_dbenv, 0)) != 0) return (ret); if ((ret = dbenv->remove(rm_dbenv, db_home, DB_FORCE)) != 0) return (ret); } /* Initialize the DB_ENV structure. */ if ((ret = __dbenv_config(dbenv, db_home, flags)) != 0) goto err; /* Convert the DBENV->open flags to internal flags. */ if (LF_ISSET(DB_CREATE)) F_SET(dbenv, DB_ENV_CREATE); if (LF_ISSET(DB_LOCKDOWN)) F_SET(dbenv, DB_ENV_LOCKDOWN); if (LF_ISSET(DB_PRIVATE)) F_SET(dbenv, DB_ENV_PRIVATE); if (LF_ISSET(DB_SYSTEM_MEM)) F_SET(dbenv, DB_ENV_SYSTEM_MEM); if (LF_ISSET(DB_THREAD)) F_SET(dbenv, DB_ENV_THREAD); /* Default permissions are read-write for both owner and group. */ dbenv->db_mode = mode == 0 ? __db_omode("rwrw--") : mode; /* * Create/join the environment. We pass in the flags that * will be of interest to an environment joining later; if * we're not the ones to do the create, we * pull out whatever has been stored, if we don't do a create. */ init_flags = 0; init_flags |= (LF_ISSET(DB_INIT_CDB) ? DB_INITENV_CDB : 0); init_flags |= (LF_ISSET(DB_INIT_LOCK) ? DB_INITENV_LOCK : 0); init_flags |= (LF_ISSET(DB_INIT_LOG) ? DB_INITENV_LOG : 0); init_flags |= (LF_ISSET(DB_INIT_MPOOL) ? DB_INITENV_MPOOL : 0); init_flags |= (LF_ISSET(DB_INIT_TXN) ? DB_INITENV_TXN : 0); init_flags |= (F_ISSET(dbenv, DB_ENV_CDB_ALLDB) ? DB_INITENV_CDB_ALLDB : 0); if ((ret = __db_e_attach(dbenv, &init_flags)) != 0) goto err; /* * __db_e_attach will return the saved init_flags field, which * contains the DB_INIT_* flags used when we were created. */ if (LF_ISSET(DB_JOINENV)) { LF_CLR(DB_JOINENV); LF_SET((init_flags & DB_INITENV_CDB) ? DB_INIT_CDB : 0); LF_SET((init_flags & DB_INITENV_LOCK) ? DB_INIT_LOCK : 0); LF_SET((init_flags & DB_INITENV_LOG) ? DB_INIT_LOG : 0); LF_SET((init_flags & DB_INITENV_MPOOL) ? DB_INIT_MPOOL : 0); LF_SET((init_flags & DB_INITENV_TXN) ? DB_INIT_TXN : 0); if (LF_ISSET(DB_INITENV_CDB_ALLDB) && (ret = dbenv->set_flags(dbenv, DB_CDB_ALLDB, 1)) != 0) goto err; } /* Initialize for CDB product. */ if (LF_ISSET(DB_INIT_CDB)) { LF_SET(DB_INIT_LOCK); F_SET(dbenv, DB_ENV_CDB); } /* Initialize the DB list, and its mutex if appropriate. */ LIST_INIT(&dbenv->dblist); if (F_ISSET(dbenv, DB_ENV_THREAD)) { if ((ret = __db_mutex_alloc(dbenv, dbenv->reginfo, (MUTEX **)&dbenv->dblist_mutexp)) != 0) return (ret); if ((ret = __db_mutex_init(dbenv, dbenv->dblist_mutexp, 0, MUTEX_THREAD)) != 0) { __db_mutex_free(dbenv, dbenv->reginfo, dbenv->dblist_mutexp); return (ret); } } /* * Initialize the subsystems. Transactions imply logging but do not * imply locking. While almost all applications want both locking * and logging, it would not be unreasonable for a single threaded * process to want transactions for atomicity guarantees, but not * necessarily need concurrency. */ if (LF_ISSET(DB_INIT_MPOOL)) if ((ret = __memp_open(dbenv)) != 0) goto err; if (LF_ISSET(DB_INIT_LOG | DB_INIT_TXN)) if ((ret = __log_open(dbenv)) != 0) goto err; if (LF_ISSET(DB_INIT_LOCK)) if ((ret = __lock_open(dbenv)) != 0) goto err; if (LF_ISSET(DB_INIT_TXN)) { if ((ret = __txn_open(dbenv)) != 0) goto err; /* * If the application is running with transactions, initialize * the function tables. */ if ((ret = __bam_init_recover(dbenv)) != 0) goto err; if ((ret = __crdel_init_recover(dbenv)) != 0) goto err; if ((ret = __db_init_recover(dbenv)) != 0) goto err; if ((ret = __ham_init_recover(dbenv)) != 0) goto err; if ((ret = __log_init_recover(dbenv)) != 0) goto err; if ((ret = __qam_init_recover(dbenv)) != 0) goto err; if ((ret = __txn_init_recover(dbenv)) != 0) goto err; /* * If the application specified their own recovery * initialization function, call it. */ if (dbenv->db_recovery_init != NULL && (ret = dbenv->db_recovery_init(dbenv)) != 0) goto err; /* Perform recovery for any previous run. */ if (LF_ISSET(DB_RECOVER | DB_RECOVER_FATAL) && (ret = __db_apprec(dbenv, LF_ISSET(DB_RECOVER | DB_RECOVER_FATAL))) != 0) goto err; } return (0); err: (void)__dbenv_refresh(dbenv); return (ret); } /* * __dbenv_remove -- * Discard an environment. * * PUBLIC: int __dbenv_remove __P((DB_ENV *, const char *, u_int32_t)); */ int __dbenv_remove(dbenv, db_home, flags) DB_ENV *dbenv; const char *db_home; u_int32_t flags; { int ret, t_ret; #undef OKFLAGS #define OKFLAGS \ DB_FORCE | DB_USE_ENVIRON | DB_USE_ENVIRON_ROOT /* Validate arguments. */ if ((ret = __db_fchk(dbenv, "DBENV->remove", flags, OKFLAGS)) != 0) goto err; /* * A hard-to-debug error is calling DBENV->remove after open. That's * not legal. You have to close the original, already opened handle * and then allocate a new DBENV handle to use for DBENV->remove. */ if (F_ISSET(dbenv, DB_ENV_OPEN_CALLED)) { __db_err(dbenv, "DBENV handle opened, not usable for remove method."); return (EINVAL); } /* Initialize the DB_ENV structure. */ if ((ret = __dbenv_config(dbenv, db_home, flags)) != 0) goto err; /* Remove the environment. */ ret = __db_e_remove(dbenv, LF_ISSET(DB_FORCE) ? 1 : 0); /* Discard any resources we've acquired. */ err: if ((t_ret = __dbenv_refresh(dbenv)) != 0 && ret == 0) ret = t_ret; memset(dbenv, CLEAR_BYTE, sizeof(DB_ENV)); __os_free(dbenv, sizeof(DB_ENV)); return (ret); } /* * __dbenv_config -- * Initialize the DB_ENV structure. */ static int __dbenv_config(dbenv, db_home, flags) DB_ENV *dbenv; const char *db_home; u_int32_t flags; { FILE *fp; int ret; char *lp, buf[MAXPATHLEN * 2]; /* Set the database home. */ if ((ret = __db_home(dbenv, db_home, flags)) != 0) return (ret); /* * Parse the config file. * * !!! * Don't use sprintf(3)/snprintf(3) -- the former is dangerous, and * the latter isn't standard, and we're manipulating strings handed * us by the application. */ if (dbenv->db_home != NULL) { #define CONFIG_NAME "/DB_CONFIG" if (strlen(dbenv->db_home) + strlen(CONFIG_NAME) + 1 > sizeof(buf)) { ret = ENAMETOOLONG; return (ret); } (void)strcpy(buf, dbenv->db_home); (void)strcat(buf, CONFIG_NAME); if ((fp = fopen(buf, "r")) != NULL) { while (fgets(buf, sizeof(buf), fp) != NULL) { if ((lp = strchr(buf, '\n')) == NULL) { __db_err(dbenv, "%s: line too long", CONFIG_NAME); (void)fclose(fp); ret = EINVAL; return (ret); } *lp = '\0'; if (buf[0] == '\0' || buf[0] == '#' || isspace((int)buf[0])) continue; if ((ret = __db_parse(dbenv, buf)) != 0) { (void)fclose(fp); return (ret); } } (void)fclose(fp); } } /* Set up the tmp directory path. */ if (dbenv->db_tmp_dir == NULL && (ret = __os_tmpdir(dbenv, flags)) != 0) return (ret); /* * The locking file descriptor is rarely on. Set the fd to -1, not * because it's ever tested, but to make sure we catch mistakes. */ if ((ret = __os_calloc(dbenv, 1, sizeof(*dbenv->lockfhp), &dbenv->lockfhp)) != 0) return (ret); dbenv->lockfhp->fd = -1; /* * Flag that the DB_ENV structure has been initialized. Note, this * must be set before calling into the subsystems as it's used during * file naming. */ F_SET(dbenv, DB_ENV_OPEN_CALLED); return (0); } /* * __dbenv_close -- * DB_ENV destructor. * * PUBLIC: int __dbenv_close __P((DB_ENV *, u_int32_t)); */ int __dbenv_close(dbenv, flags) DB_ENV *dbenv; u_int32_t flags; { int ret; COMPQUIET(flags, 0); PANIC_CHECK(dbenv); ret = __dbenv_refresh(dbenv); /* Discard the structure if we allocated it. */ if (!F_ISSET(dbenv, DB_ENV_USER_ALLOC)) { memset(dbenv, CLEAR_BYTE, sizeof(DB_ENV)); __os_free(dbenv, sizeof(DB_ENV)); } return (ret); } /* * __dbenv_refresh -- * Refresh the DB_ENV structure, releasing any allocated resources. */ static int __dbenv_refresh(dbenv) DB_ENV *dbenv; { int ret, t_ret; char **p; ret = 0; /* * Close subsystems, in the reverse order they were opened (txn * must be first, it may want to discard locks and flush the log). */ if (TXN_ON(dbenv)) { if ((t_ret = __txn_close(dbenv)) != 0 && ret == 0) ret = t_ret; } if (LOCKING_ON(dbenv)) { if ((t_ret = __lock_close(dbenv)) != 0 && ret == 0) ret = t_ret; } __lock_dbenv_close(dbenv); if (LOGGING_ON(dbenv)) { if ((t_ret = __log_close(dbenv)) != 0 && ret == 0) ret = t_ret; } if (MPOOL_ON(dbenv)) { if ((t_ret = __memp_close(dbenv)) != 0 && ret == 0) ret = t_ret; } /* Discard DB list and its mutex. */ LIST_INIT(&dbenv->dblist); if (dbenv->dblist_mutexp != NULL) __db_mutex_free(dbenv, dbenv->reginfo, dbenv->dblist_mutexp); /* Detach from the region. */ if (dbenv->reginfo != NULL) { if ((t_ret = __db_e_detach(dbenv, 0)) != 0 && ret == 0) ret = t_ret; /* * !!! * Don't free dbenv->reginfo or set the reference to NULL, * that was done by __db_e_detach(). */ } /* Clean up the structure. */ dbenv->db_panic = 0; if (dbenv->db_home != NULL) { __os_freestr(dbenv->db_home); dbenv->db_home = NULL; } if (dbenv->db_log_dir != NULL) { __os_freestr(dbenv->db_log_dir); dbenv->db_log_dir = NULL; } if (dbenv->db_tmp_dir != NULL) { __os_freestr(dbenv->db_tmp_dir); dbenv->db_tmp_dir = NULL; } if (dbenv->db_data_dir != NULL) { for (p = dbenv->db_data_dir; *p != NULL; ++p) __os_freestr(*p); __os_free(dbenv->db_data_dir, dbenv->data_cnt * sizeof(char **)); dbenv->db_data_dir = NULL; } dbenv->data_cnt = dbenv->data_next = 0; dbenv->db_mode = 0; if (dbenv->lockfhp != NULL) { __os_free(dbenv->lockfhp, sizeof(*dbenv->lockfhp)); dbenv->lockfhp = NULL; } if (dbenv->dtab != NULL) { __os_free(dbenv->dtab, dbenv->dtab_size * sizeof(dbenv->dtab[0])); dbenv->dtab = NULL; dbenv->dtab_size = 0; } dbenv->mp_mmapsize = 0; dbenv->links.tqe_next = NULL; dbenv->links.tqe_prev = NULL; dbenv->xa_rmid = 0; dbenv->xa_txn = 0; F_CLR(dbenv, ~(DB_ENV_STANDALONE | DB_ENV_USER_ALLOC)); return (ret); } #define DB_ADDSTR(add) { \ if ((add) != NULL) { \ /* If leading slash, start over. */ \ if (__os_abspath(add)) { \ p = str; \ slash = 0; \ } \ /* Append to the current string. */ \ len = strlen(add); \ if (slash) \ *p++ = PATH_SEPARATOR[0]; \ memcpy(p, add, len); \ p += len; \ slash = strchr(PATH_SEPARATOR, p[-1]) == NULL; \ } \ } /* * __db_appname -- * Given an optional DB environment, directory and file name and type * of call, build a path based on the DBENV->open rules, and return * it in allocated space. * * PUBLIC: int __db_appname __P((DB_ENV *, APPNAME, * PUBLIC: const char *, const char *, u_int32_t, DB_FH *, char **)); */ int __db_appname(dbenv, appname, dir, file, tmp_oflags, fhp, namep) DB_ENV *dbenv; APPNAME appname; const char *dir, *file; u_int32_t tmp_oflags; DB_FH *fhp; char **namep; { DB_ENV etmp; size_t len, str_len; int data_entry, ret, slash, tmp_create, tmp_free; const char *a, *b, *c; char *p, *str; a = b = c = NULL; data_entry = -1; tmp_create = tmp_free = 0; /* * We don't return a name when creating temporary files, just a * file handle. Default to an error now. */ if (fhp != NULL) F_CLR(fhp, DB_FH_VALID); if (namep != NULL) *namep = NULL; /* * Absolute path names are never modified. If the file is an absolute * path, we're done. If the directory is, simply append the file and * return. */ if (file != NULL && __os_abspath(file)) return (__os_strdup(dbenv, file, namep)); if (dir != NULL && __os_abspath(dir)) { a = dir; goto done; } /* * DB_ENV DIR APPNAME RESULT * ------------------------------------------- * null null none /file * null set none DIR/file * set null none DB_HOME/file * set set none DB_HOME/DIR/file * * DB_ENV FILE APPNAME RESULT * ------------------------------------------- * null null DB_APP_DATA / * null set DB_APP_DATA ./file * set null DB_APP_DATA / * set set DB_APP_DATA DB_HOME/DB_DATA_DIR/file * * DB_ENV DIR APPNAME RESULT * ------------------------------------------- * null null DB_APP_LOG /file * null set DB_APP_LOG DIR/file * set null DB_APP_LOG DB_HOME/DB_LOG_DIR/file * set set DB_APP_LOG DB_HOME/DB_LOG_DIR/DIR/file * * DB_ENV APPNAME RESULT * ------------------------------------------- * null DB_APP_TMP* / * set DB_APP_TMP* DB_HOME/DB_TMP_DIR/ */ retry: switch (appname) { case DB_APP_NONE: if (dbenv == NULL || !F_ISSET(dbenv, DB_ENV_OPEN_CALLED)) { if (dir == NULL) goto tmp; a = dir; } else { a = dbenv->db_home; b = dir; } break; case DB_APP_DATA: if (dir != NULL) { __db_err(dbenv, "DB_APP_DATA: illegal directory specification"); return (EINVAL); } if (file == NULL) { tmp_create = 1; goto tmp; } if (dbenv != NULL && F_ISSET(dbenv, DB_ENV_OPEN_CALLED)) { a = dbenv->db_home; if (dbenv->db_data_dir != NULL && (b = dbenv->db_data_dir[++data_entry]) == NULL) { data_entry = -1; b = dbenv->db_data_dir[0]; } } break; case DB_APP_LOG: if (dbenv == NULL || !F_ISSET(dbenv, DB_ENV_OPEN_CALLED)) { if (dir == NULL) goto tmp; a = dir; } else { a = dbenv->db_home; b = dbenv->db_log_dir; c = dir; } break; case DB_APP_TMP: if (dir != NULL || file != NULL) { __db_err(dbenv, "DB_APP_TMP: illegal directory or file specification"); return (EINVAL); } tmp_create = 1; if (dbenv == NULL || !F_ISSET(dbenv, DB_ENV_OPEN_CALLED)) goto tmp; else { a = dbenv->db_home; b = dbenv->db_tmp_dir; } break; } /* Reference a file from the appropriate temporary directory. */ if (0) { tmp: if (dbenv == NULL || !F_ISSET(dbenv, DB_ENV_OPEN_CALLED)) { memset(&etmp, 0, sizeof(etmp)); if ((ret = __os_tmpdir(&etmp, DB_USE_ENVIRON)) != 0) return (ret); tmp_free = 1; a = etmp.db_tmp_dir; } else a = dbenv->db_tmp_dir; } done: len = (a == NULL ? 0 : strlen(a) + 1) + (b == NULL ? 0 : strlen(b) + 1) + (c == NULL ? 0 : strlen(c) + 1) + (file == NULL ? 0 : strlen(file) + 1); /* * Allocate space to hold the current path information, as well as any * temporary space that we're going to need to create a temporary file * name. */ #define DB_TRAIL "BDBXXXXXX" str_len = len + sizeof(DB_TRAIL) + 10; if ((ret = __os_malloc(dbenv, str_len, NULL, &str)) != 0) { if (tmp_free) __os_freestr(etmp.db_tmp_dir); return (ret); } slash = 0; p = str; DB_ADDSTR(a); DB_ADDSTR(b); DB_ADDSTR(file); *p = '\0'; /* Discard any space allocated to find the temp directory. */ if (tmp_free) { __os_freestr(etmp.db_tmp_dir); tmp_free = 0; } /* * If we're opening a data file, see if it exists. If it does, * return it, otherwise, try and find another one to open. */ if (data_entry != -1 && __os_exists(str, NULL) != 0) { __os_free(str, str_len); a = b = c = NULL; goto retry; } /* Create the file if so requested. */ if (tmp_create && (ret = __db_tmp_open(dbenv, tmp_oflags, str, fhp)) != 0) { __os_free(str, str_len); return (ret); } if (namep == NULL) __os_free(str, str_len); else *namep = str; return (0); } /* * __db_home -- * Find the database home. */ static int __db_home(dbenv, db_home, flags) DB_ENV *dbenv; const char *db_home; u_int32_t flags; { const char *p; /* * Use db_home by default, this allows utilities to reasonably * override the environment either explicitly or by using a -h * option. Otherwise, use the environment if it's permitted * and initialized. */ if ((p = db_home) == NULL && (LF_ISSET(DB_USE_ENVIRON) || (LF_ISSET(DB_USE_ENVIRON_ROOT) && __os_isroot())) && (p = getenv("DB_HOME")) != NULL && p[0] == '\0') { __db_err(dbenv, "illegal DB_HOME environment variable"); return (EINVAL); } return (p == NULL ? 0 : __os_strdup(dbenv, p, &dbenv->db_home)); } /* * __db_parse -- * Parse a single NAME VALUE pair. */ static int __db_parse(dbenv, s) DB_ENV *dbenv; char *s; { u_long v1, v2, v3; u_int32_t flags; char *name, *p, *value, v4; /* * !!! * The value of 40 is hard-coded into format arguments to sscanf * below, it can't be changed here without changing it there, too. */ char arg[40]; /* * Name/value pairs are parsed as two white-space separated strings. * Leading and trailing white-space is trimmed from the value, but * it may contain embedded white-space. Note: we use the isspace(3) * macro because it's more portable, but that means that you can use * characters like form-feed to separate the strings. */ name = s; for (p = name; *p != '\0' && !isspace((int)*p); ++p) ; if (*p == '\0' || p == name) goto illegal; *p = '\0'; for (++p; isspace((int)*p); ++p) ; if (*p == '\0') goto illegal; value = p; for (++p; *p != '\0'; ++p) ; for (--p; isspace((int)*p); --p) ; ++p; if (p == value) { illegal: __db_err(dbenv, "mis-formatted name-value pair: %s", s); return (EINVAL); } *p = '\0'; if (!strcasecmp(name, "set_cachesize")) { if (sscanf(value, "%lu %lu %lu %c", &v1, &v2, &v3, &v4) != 3) goto badarg; return (dbenv->set_cachesize(dbenv, v1, v2, v3)); } if (!strcasecmp(name, "set_data_dir") || !strcasecmp(name, "db_data_dir")) /* Compatibility. */ return (dbenv->set_data_dir(dbenv, value)); if (!strcasecmp(name, "set_flags")) { if (sscanf(value, "%40s %c", arg, &v4) != 1) goto badarg; if (!strcasecmp(value, "db_cdb_alldb")) return (dbenv->set_flags(dbenv, DB_CDB_ALLDB, 1)); if (!strcasecmp(value, "db_nommap")) return (dbenv->set_flags(dbenv, DB_NOMMAP, 1)); if (!strcasecmp(value, "db_txn_nosync")) return (dbenv->set_flags(dbenv, DB_TXN_NOSYNC, 1)); goto badarg; } if (!strcasecmp(name, "set_lg_bsize")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_lg_bsize(dbenv, v1)); } if (!strcasecmp(name, "set_lg_max")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_lg_max(dbenv, v1)); } if (!strcasecmp(name, "set_lg_dir") || !strcasecmp(name, "db_log_dir")) /* Compatibility. */ return (dbenv->set_lg_dir(dbenv, value)); if (!strcasecmp(name, "set_lk_detect")) { if (sscanf(value, "%40s %c", arg, &v4) != 1) goto badarg; if (!strcasecmp(value, "db_lock_default")) flags = DB_LOCK_DEFAULT; else if (!strcasecmp(value, "db_lock_oldest")) flags = DB_LOCK_OLDEST; else if (!strcasecmp(value, "db_lock_random")) flags = DB_LOCK_RANDOM; else if (!strcasecmp(value, "db_lock_youngest")) flags = DB_LOCK_YOUNGEST; else goto badarg; return (dbenv->set_lk_detect(dbenv, flags)); } if (!strcasecmp(name, "set_lk_max")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_lk_max(dbenv, v1)); } if (!strcasecmp(name, "set_lk_max_locks")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_lk_max_locks(dbenv, v1)); } if (!strcasecmp(name, "set_lk_max_lockers")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_lk_max_lockers(dbenv, v1)); } if (!strcasecmp(name, "set_lk_max_objects")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_lk_max_objects(dbenv, v1)); } if (!strcasecmp(name, "set_mp_mmapsize")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_mp_mmapsize(dbenv, v1)); } if (!strcasecmp(name, "set_region_init")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1 || v1 != 1) goto badarg; return (db_env_set_region_init(v1)); } if (!strcasecmp(name, "set_shm_key")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_shm_key(dbenv, (long)v1)); } if (!strcasecmp(name, "set_tas_spins")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (db_env_set_tas_spins(v1)); } if (!strcasecmp(name, "set_tmp_dir") || !strcasecmp(name, "db_tmp_dir")) /* Compatibility.*/ return (dbenv->set_tmp_dir(dbenv, value)); if (!strcasecmp(name, "set_tx_max")) { if (sscanf(value, "%lu %c", &v1, &v4) != 1) goto badarg; return (dbenv->set_tx_max(dbenv, v1)); } if (!strcasecmp(name, "set_verbose")) { if (sscanf(value, "%40s %c", arg, &v4) != 1) goto badarg; if (!strcasecmp(value, "db_verb_chkpoint")) flags = DB_VERB_CHKPOINT; else if (!strcasecmp(value, "db_verb_deadlock")) flags = DB_VERB_DEADLOCK; else if (!strcasecmp(value, "db_verb_recovery")) flags = DB_VERB_RECOVERY; else if (!strcasecmp(value, "db_verb_waitsfor")) flags = DB_VERB_WAITSFOR; else goto badarg; return (dbenv->set_verbose(dbenv, flags, 1)); } __db_err(dbenv, "unrecognized name-value pair: %s", s); return (EINVAL); badarg: __db_err(dbenv, "incorrect arguments for name-value pair: %s", s); return (EINVAL); } /* * __db_tmp_open -- * Create a temporary file. */ static int __db_tmp_open(dbenv, tmp_oflags, path, fhp) DB_ENV *dbenv; u_int32_t tmp_oflags; char *path; DB_FH *fhp; { u_long pid; int mode, isdir, ret; const char *p; char *trv; /* * Check the target directory; if you have six X's and it doesn't * exist, this runs for a *very* long time. */ if ((ret = __os_exists(path, &isdir)) != 0) { __db_err(dbenv, "%s: %s", path, db_strerror(ret)); return (ret); } if (!isdir) { __db_err(dbenv, "%s: %s", path, db_strerror(EINVAL)); return (EINVAL); } /* Build the path. */ for (trv = path; *trv != '\0'; ++trv) ; *trv = PATH_SEPARATOR[0]; for (p = DB_TRAIL; (*++trv = *p) != '\0'; ++p) ; /* * Replace the X's with the process ID. Pid should be a pid_t, * but we use unsigned long for portability. */ for (pid = getpid(); *--trv == 'X'; pid /= 10) switch (pid % 10) { case 0: *trv = '0'; break; case 1: *trv = '1'; break; case 2: *trv = '2'; break; case 3: *trv = '3'; break; case 4: *trv = '4'; break; case 5: *trv = '5'; break; case 6: *trv = '6'; break; case 7: *trv = '7'; break; case 8: *trv = '8'; break; case 9: *trv = '9'; break; } ++trv; /* Set up open flags and mode. */ mode = __db_omode("rw----"); /* Loop, trying to open a file. */ for (;;) { if ((ret = __os_open(dbenv, path, tmp_oflags | DB_OSO_CREATE | DB_OSO_EXCL, mode, fhp)) == 0) return (0); /* * !!!: * If we don't get an EEXIST error, then there's something * seriously wrong. Unfortunately, if the implementation * doesn't return EEXIST for O_CREAT and O_EXCL regardless * of other possible errors, we've lost. */ if (ret != EEXIST) { __db_err(dbenv, "tmp_open: %s: %s", path, db_strerror(ret)); return (ret); } /* * Tricky little algorithm for backward compatibility. * Assumes sequential ordering of lower-case characters. */ for (;;) { if (*trv == '\0') return (EINVAL); if (*trv == 'z') *trv++ = 'a'; else { if (isdigit((int)*trv)) *trv = 'a'; else ++*trv; break; } } } /* NOTREACHED */ }