diff options
Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/db/db_method.c')
| -rw-r--r-- | debian/htdig/htdig-3.2.0b6/db/db_method.c | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/db/db_method.c b/debian/htdig/htdig-3.2.0b6/db/db_method.c new file mode 100644 index 00000000..9a824229 --- /dev/null +++ b/debian/htdig/htdig-3.2.0b6/db/db_method.c @@ -0,0 +1,465 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1999 + * Sleepycat Software. All rights reserved. + */ + +#include "db_config.h" + +#ifndef lint +static const char sccsid[] = "@(#)db_method.c 11.8 (Sleepycat) 9/22/99"; +#endif /* not lint */ + +#ifndef NO_SYSTEM_INCLUDES +#include <sys/types.h> + +#include <errno.h> +#include <string.h> +#endif + +#include "db_int.h" +#include "db_page.h" +#include "db_am.h" +#include "btree.h" +#include "hash.h" +#include "qam.h" +#include "xa.h" +#include "xa_ext.h" + +static int CDB___db_get_byteswapped __P((DB *)); +static DBTYPE + CDB___db_get_type __P((DB *)); +static int CDB___db_init __P((DB *, u_int32_t)); +static int CDB___db_set_cachesize __P((DB *, u_int32_t, u_int32_t, int)); +static int CDB___db_set_dup_compare __P((DB *, int (*)(const DBT *, const DBT *))); +static void CDB___db_set_errcall __P((DB *, void (*)(const char *, char *))); +static void CDB___db_set_errfile __P((DB *, FILE *)); +static void CDB___db_set_feedback __P((DB *, void (*)(DB *, int, int))); +static int CDB___db_set_flags __P((DB *, u_int32_t)); +static int CDB___db_set_lorder __P((DB *, int)); +static int CDB___db_set_malloc __P((DB *, void *(*)(size_t))); +static int CDB___db_set_pagesize __P((DB *, u_int32_t)); +static int CDB___db_set_realloc __P((DB *, void *(*)(void *, size_t))); +static void CDB___db_set_errpfx __P((DB *, const char *)); +static void CDB___db_set_paniccall __P((DB *, void (*)(DB_ENV *, int))); +static void CDB___dbh_err __P((DB *, int, const char *, ...)); +static void CDB___dbh_errx __P((DB *, const char *, ...)); + +/* + * CDB_db_create -- + * DB constructor. + */ +int +CDB_db_create(dbpp, dbenv, flags) + DB **dbpp; + DB_ENV *dbenv; + u_int32_t flags; +{ + DB *dbp; + int ret; + + /* Check for invalid function flags. */ + switch (flags) { + case 0: + break; + case DB_XA_CREATE: + if (dbenv != NULL) { + CDB___db_err(dbenv, + "XA applications may not specify an environment to CDB_db_create"); + return (EINVAL); + } + + /* + * If it's an XA database, open it within the XA environment, + * taken from the global list of environments. (When the XA + * transaction manager called our xa_start() routine the + * "current" environment was moved to the start of the list. + */ + dbenv = TAILQ_FIRST(&DB_GLOBAL(db_envq)); + break; + default: + return (CDB___db_ferr(dbenv, "CDB_db_create", 0)); + } + + /* Allocate the DB. */ + if ((ret = CDB___os_calloc(1, sizeof(*dbp), &dbp)) != 0) + return (ret); + if ((ret = CDB___db_init(dbp, flags)) != 0) { + CDB___os_free(dbp, sizeof(*dbp)); + return (ret); + } + + /* If we don't have an environment yet, allocate a local one. */ + if (dbenv == NULL) { + if ((ret = CDB_db_env_create(&dbenv, 0)) != 0) { + CDB___os_free(dbp, sizeof(*dbp)); + return (ret); + } + F_SET(dbenv, DB_ENV_DBLOCAL); + } + + dbp->dbenv = dbenv; + + *dbpp = dbp; + return (0); +} + +/* + * CDB___db_init -- + * Initialize a DB structure. + */ +static int +CDB___db_init(dbp, flags) + DB *dbp; + u_int32_t flags; +{ + int ret; + + dbp->pgsize = DB_DEF_IOSIZE; + + dbp->log_fileid = DB_LOGFILEID_INVALID; + + TAILQ_INIT(&dbp->free_queue); + TAILQ_INIT(&dbp->active_queue); + + FLD_SET(dbp->am_ok, + DB_OK_BTREE | DB_OK_HASH | DB_OK_QUEUE | DB_OK_RECNO); + + dbp->close = CDB___db_close; + dbp->cursor = CDB___db_cursor; + dbp->del = NULL; /* !!! Must be set by access method. */ + dbp->err = CDB___dbh_err; + dbp->errx = CDB___dbh_errx; + dbp->fd = CDB___db_fd; + dbp->get = CDB___db_get; + dbp->get_byteswapped = CDB___db_get_byteswapped; + dbp->get_type = CDB___db_get_type; + dbp->join = CDB___db_join; + dbp->open = CDB___db_open; + dbp->put = CDB___db_put; + dbp->remove = CDB___db_remove; + dbp->set_cachesize = CDB___db_set_cachesize; + dbp->set_dup_compare = CDB___db_set_dup_compare; + dbp->set_errcall = CDB___db_set_errcall; + dbp->set_errfile = CDB___db_set_errfile; + dbp->set_errpfx = CDB___db_set_errpfx; + dbp->set_feedback = CDB___db_set_feedback; + dbp->set_flags = CDB___db_set_flags; + dbp->set_lorder = CDB___db_set_lorder; + dbp->set_malloc = CDB___db_set_malloc; + dbp->set_pagesize = CDB___db_set_pagesize; + dbp->set_paniccall = CDB___db_set_paniccall; + dbp->set_realloc = CDB___db_set_realloc; + dbp->stat = NULL; /* !!! Must be set by access method. */ + dbp->sync = CDB___db_sync; + dbp->upgrade = CDB___db_upgrade; + /* Access method specific. */ + if ((ret = CDB___bam_db_create(dbp)) != 0) + return (ret); + if ((ret = CDB___ham_db_create(dbp)) != 0) + return (ret); + if ((ret = CDB___qam_db_create(dbp)) != 0) + return (ret); + + /* + * XA specific: must be last, as we replace methods set by the + * access methods. + */ + if (LF_ISSET(DB_XA_CREATE) && (ret = CDB___db_xa_create(dbp)) != 0) + return (ret); + + F_SET(dbp, DB_AM_PGDEF); + + return (0); +} + +/* + * CDB___dbh_am_chk -- + * Error if an unreasonable method is called. + * + * PUBLIC: int CDB___dbh_am_chk __P((DB *, u_int32_t)); + */ +int +CDB___dbh_am_chk(dbp, flags) + DB *dbp; + u_int32_t flags; +{ + /* + * We start out allowing any access methods to be called, and as the + * application calls the methods the options become restricted. The + * idea is to quit as soon as an illegal method combination is called. + */ + if ((LF_ISSET(DB_OK_BTREE) && FLD_ISSET(dbp->am_ok, DB_OK_BTREE)) || + (LF_ISSET(DB_OK_HASH) && FLD_ISSET(dbp->am_ok, DB_OK_HASH)) || + (LF_ISSET(DB_OK_QUEUE) && FLD_ISSET(dbp->am_ok, DB_OK_QUEUE)) || + (LF_ISSET(DB_OK_RECNO) && FLD_ISSET(dbp->am_ok, DB_OK_RECNO))) { + FLD_CLR(dbp->am_ok, ~flags); + return (0); + } + + CDB___db_err(dbp->dbenv, + "call implies an access method which is inconsistent with previous calls"); + return (EINVAL); +} + +/* + * CDB___dbh_err -- + * Error message, including the standard error string. + */ +static void +#if defined(__STDC__) || defined(_MSC_VER) /* WIN32 */ +CDB___dbh_err(DB *dbp, int error, const char *fmt, ...) +#else +CDB___dbh_err(dbp, error, fmt, va_alist) + DB *dbp; + int error; + const char *fmt; + va_dcl +#endif +{ + va_list ap; + +#if defined(__STDC__) || defined(_MSC_VER) /* WIN32 */ + va_start(ap, fmt); +#else + va_start(ap); +#endif + CDB___db_real_err(dbp->dbenv, error, 1, 1, fmt, ap); + + va_end(ap); +} + +/* + * CDB___dbh_errx -- + * Error message. + */ +static void +#if defined(__STDC__) || defined(_MSC_VER) /* WIN32 */ +CDB___dbh_errx(DB *dbp, const char *fmt, ...) +#else +CDB___dbh_errx(dbp, fmt, va_alist) + DB *dbp; + const char *fmt; + va_dcl +#endif +{ + va_list ap; + +#if defined(__STDC__) || defined(_MSC_VER) /* WIN32 */ + va_start(ap, fmt); +#else + va_start(ap); +#endif + CDB___db_real_err(dbp->dbenv, 0, 0, 1, fmt, ap); + + va_end(ap); +} + +/* + * CDB___db_get_byteswapped -- + * Return if database requires byte swapping. + */ +static int +CDB___db_get_byteswapped(dbp) + DB *dbp; +{ + DB_ILLEGAL_BEFORE_OPEN(dbp, "get_byteswapped"); + + return (F_ISSET(dbp, DB_AM_SWAP) ? 1 : 0); +} + +/* + * CDB___db_get_type -- + * Return type of underlying database. + */ +static DBTYPE +CDB___db_get_type(dbp) + DB *dbp; +{ + DB_ILLEGAL_BEFORE_OPEN(dbp, "get_type"); + + return (dbp->type); +} + +/* + * CDB___db_set_cachesize -- + * Set underlying cache size. + */ +static int +CDB___db_set_cachesize(dbp, cache_gbytes, cache_bytes, ncache) + DB *dbp; + u_int32_t cache_gbytes, cache_bytes; + int ncache; +{ + DB_ILLEGAL_IN_ENV(dbp, "set_cachesize"); + DB_ILLEGAL_AFTER_OPEN(dbp, "set_cachesize"); + + return (dbp->dbenv->set_cachesize( + dbp->dbenv, cache_gbytes, cache_bytes, ncache)); +} + +/* + * CDB___db_set_dup_compare -- + * Set duplicate comparison routine. + */ +static int +CDB___db_set_dup_compare(dbp, func) + DB *dbp; + int (*func) __P((const DBT *, const DBT *)); +{ + DB_ILLEGAL_AFTER_OPEN(dbp, "dup_compare"); + DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE | DB_OK_HASH); + + dbp->dup_compare = func; + + return (0); +} + +static void +CDB___db_set_errcall(dbp, errcall) + DB *dbp; + void (*errcall) __P((const char *, char *)); +{ + dbp->dbenv->set_errcall(dbp->dbenv, errcall); +} + +static void +CDB___db_set_errfile(dbp, errfile) + DB *dbp; + FILE *errfile; +{ + dbp->dbenv->set_errfile(dbp->dbenv, errfile); +} + +static void +CDB___db_set_errpfx(dbp, errpfx) + DB *dbp; + const char *errpfx; +{ + dbp->dbenv->set_errpfx(dbp->dbenv, errpfx); +} + +static void +CDB___db_set_feedback(dbp, feedback) + DB *dbp; + void (*feedback) __P((DB *, int, int)); +{ + dbp->db_feedback = feedback; +} + +static int +CDB___db_set_flags(dbp, flags) + DB *dbp; + u_int32_t flags; +{ + int ret; + + /* + * !!! + * The hash access method only takes two flags: DB_DUP and DB_DUPSORT. + * The Btree access method uses them for the same purposes, and so we + * resolve them there. + * + * The queue access method takes no flags. + */ + if ((ret = CDB___bam_set_flags(dbp, &flags)) != 0) + return (ret); + if ((ret = CDB___ram_set_flags(dbp, &flags)) != 0) + return (ret); + + return (flags == 0 ? 0 : CDB___db_ferr(dbp->dbenv, "DB->set_flags", 0)); +} + +static int +CDB___db_set_lorder(dbp, db_lorder) + DB *dbp; + int db_lorder; +{ + int ret; + + DB_ILLEGAL_AFTER_OPEN(dbp, "set_lorder"); + + /* Flag if the specified byte order requires swapping. */ + switch (ret = CDB___db_byteorder(dbp->dbenv, db_lorder)) { + case 0: + F_CLR(dbp, DB_AM_SWAP); + break; + case DB_SWAPBYTES: + F_SET(dbp, DB_AM_SWAP); + break; + default: + return (ret); + /* NOTREACHED */ + } + return (0); +} + +static int +CDB___db_set_malloc(dbp, func) + DB *dbp; + void *(*func) __P((size_t)); +{ + DB_ILLEGAL_AFTER_OPEN(dbp, "set_malloc"); + + dbp->db_malloc = func; + return (0); +} + +static int +CDB___db_set_pagesize(dbp, db_pagesize) + DB *dbp; + u_int32_t db_pagesize; +{ + DB_ILLEGAL_AFTER_OPEN(dbp, "set_pagesize"); + + if (db_pagesize < DB_MIN_PGSIZE) { + CDB___db_err(dbp->dbenv, "page sizes may not be smaller than %lu", + (u_long)DB_MIN_PGSIZE); + return (EINVAL); + } + if (db_pagesize > DB_MAX_PGSIZE) { + CDB___db_err(dbp->dbenv, "page sizes may not be larger than %lu", + (u_long)DB_MAX_PGSIZE); + return (EINVAL); + } + + /* + * We don't want anything that's not a power-of-2, as we rely on that + * for alignment of various types on the pages. + */ + if ((u_int32_t)1 << CDB___db_log2(db_pagesize) != db_pagesize) { + CDB___db_err(dbp->dbenv, "page sizes must be a power-of-2"); + return (EINVAL); + } + + /* + * XXX + * Should we be checking for a page size that's not a multiple of 512, + * so that we never try and write less than a disk sector? + */ + + F_CLR(dbp, DB_AM_PGDEF); + dbp->pgsize = db_pagesize; + + return (0); +} + +static int +CDB___db_set_realloc(dbp, func) + DB *dbp; + void *(*func) __P((void *, size_t)); +{ + DB_ILLEGAL_AFTER_OPEN(dbp, "set_realloc"); + + dbp->db_realloc = func; + return (0); +} + +static void +CDB___db_set_paniccall(dbp, paniccall) + DB *dbp; + void (*paniccall) __P((DB_ENV *, int)); +{ + dbp->dbenv->set_paniccall(dbp->dbenv, paniccall); +} |