gecko-dev/db/common/db_err.c

616 строки
13 KiB
C

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 1997, 1998
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)db_err.c 10.25 (Sleepycat) 5/2/98";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <errno.h>
#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#endif
#include "db_int.h"
#include "common_ext.h"
static int __db_keyempty __P((const DB_ENV *));
static int __db_rdonly __P((const DB_ENV *, const char *));
/*
* __db_err --
* Standard DB error routine.
*
* PUBLIC: #ifdef __STDC__
* PUBLIC: void __db_err __P((const DB_ENV *dbenv, const char *fmt, ...));
* PUBLIC: #else
* PUBLIC: void __db_err();
* PUBLIC: #endif
*/
void
#ifdef __STDC__
__db_err(const DB_ENV *dbenv, const char *fmt, ...)
#else
__db_err(dbenv, fmt, va_alist)
const DB_ENV *dbenv;
const char *fmt;
va_dcl
#endif
{
va_list ap;
char errbuf[2048]; /* XXX: END OF THE STACK DON'T TRUST SPRINTF. */
if (dbenv == NULL)
return;
#ifdef __STDC__
va_start(ap, fmt);
#else
va_start(ap);
#endif
if (dbenv->db_errcall != NULL) {
(void)vsnprintf(errbuf, sizeof(errbuf), fmt, ap);
dbenv->db_errcall(dbenv->db_errpfx, errbuf);
}
if (dbenv->db_errfile != NULL) {
if (dbenv->db_errpfx != NULL)
(void)fprintf(dbenv->db_errfile, "%s: ",
dbenv->db_errpfx);
(void)vfprintf(dbenv->db_errfile, fmt, ap);
(void)fprintf(dbenv->db_errfile, "\n");
(void)fflush(dbenv->db_errfile);
}
va_end(ap);
}
/*
* XXX
* Provide ANSI C prototypes for the panic functions. Some compilers, (e.g.,
* MS VC 4.2) get upset if they aren't here, even though the K&R declaration
* appears before the assignment in the __db__panic() call.
*/
static int __db_ecursor __P((DB *, DB_TXN *, DBC **));
static int __db_edel __P((DB *, DB_TXN *, DBT *, u_int32_t));
static int __db_efd __P((DB *, int *));
static int __db_egp __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
static int __db_estat __P((DB *, void *, void *(*)(size_t), u_int32_t));
static int __db_esync __P((DB *, u_int32_t));
/*
* __db_ecursor --
* After-panic cursor routine.
*/
static int
__db_ecursor(a, b, c)
DB *a;
DB_TXN *b;
DBC **c;
{
COMPQUIET(a, NULL);
COMPQUIET(b, NULL);
COMPQUIET(c, NULL);
return (EPERM);
}
/*
* __db_edel --
* After-panic delete routine.
*/
static int
__db_edel(a, b, c, d)
DB *a;
DB_TXN *b;
DBT *c;
u_int32_t d;
{
COMPQUIET(a, NULL);
COMPQUIET(b, NULL);
COMPQUIET(c, NULL);
COMPQUIET(d, 0);
return (EPERM);
}
/*
* __db_efd --
* After-panic fd routine.
*/
static int
__db_efd(a, b)
DB *a;
int *b;
{
COMPQUIET(a, NULL);
COMPQUIET(b, NULL);
return (EPERM);
}
/*
* __db_egp --
* After-panic get/put routine.
*/
static int
__db_egp(a, b, c, d, e)
DB *a;
DB_TXN *b;
DBT *c, *d;
u_int32_t e;
{
COMPQUIET(a, NULL);
COMPQUIET(b, NULL);
COMPQUIET(c, NULL);
COMPQUIET(d, NULL);
COMPQUIET(e, 0);
return (EPERM);
}
/*
* __db_estat --
* After-panic stat routine.
*/
static int
__db_estat(a, b, c, d)
DB *a;
void *b;
void *(*c) __P((size_t));
u_int32_t d;
{
COMPQUIET(a, NULL);
COMPQUIET(b, NULL);
COMPQUIET(c, NULL);
COMPQUIET(d, 0);
return (EPERM);
}
/*
* __db_esync --
* After-panic sync routine.
*/
static int
__db_esync(a, b)
DB *a;
u_int32_t b;
{
COMPQUIET(a, NULL);
COMPQUIET(b, 0);
return (EPERM);
}
/*
* __db_panic --
* Lock out the tree due to unrecoverable error.
*
* PUBLIC: int __db_panic __P((DB *));
*/
int
__db_panic(dbp)
DB *dbp;
{
/*
* XXX
* We should shut down all of the process's cursors, too.
*
* We should call mpool and have it shut down the file, so we get
* other processes sharing this file as well.
*
* Chaos reigns within.
* Reflect, repent, and reboot.
* Order shall return.
*/
dbp->cursor = __db_ecursor;
dbp->del = __db_edel;
dbp->fd = __db_efd;
dbp->get = __db_egp;
dbp->put = __db_egp;
dbp->stat = __db_estat;
dbp->sync = __db_esync;
return (EPERM);
}
/* Check for invalid flags. */
#undef DB_CHECK_FLAGS
#define DB_CHECK_FLAGS(dbenv, name, flags, ok_flags) \
if ((flags) & ~(ok_flags)) \
return (__db_ferr(dbenv, name, 0));
/* Check for invalid flag combinations. */
#undef DB_CHECK_FCOMBO
#define DB_CHECK_FCOMBO(dbenv, name, flags, flag1, flag2) \
if ((flags) & (flag1) && (flags) & (flag2)) \
return (__db_ferr(dbenv, name, 1));
/*
* __db_fchk --
* General flags checking routine.
*
* PUBLIC: int __db_fchk __P((DB_ENV *, const char *, u_int32_t, u_int32_t));
*/
int
__db_fchk(dbenv, name, flags, ok_flags)
DB_ENV *dbenv;
const char *name;
u_int32_t flags, ok_flags;
{
DB_CHECK_FLAGS(dbenv, name, flags, ok_flags);
return (0);
}
/*
* __db_fcchk --
* General combination flags checking routine.
*
* PUBLIC: int __db_fcchk
* PUBLIC: __P((DB_ENV *, const char *, u_int32_t, u_int32_t, u_int32_t));
*/
int
__db_fcchk(dbenv, name, flags, flag1, flag2)
DB_ENV *dbenv;
const char *name;
u_int32_t flags, flag1, flag2;
{
DB_CHECK_FCOMBO(dbenv, name, flags, flag1, flag2);
return (0);
}
/*
* __db_cdelchk --
* Common cursor delete argument checking routine.
*
* PUBLIC: int __db_cdelchk __P((const DB *, u_int32_t, int, int));
*/
int
__db_cdelchk(dbp, flags, isrdonly, isvalid)
const DB *dbp;
u_int32_t flags;
int isrdonly, isvalid;
{
/* Check for changes to a read-only tree. */
if (isrdonly)
return (__db_rdonly(dbp->dbenv, "c_del"));
/* Check for invalid dbc->c_del() function flags. */
DB_CHECK_FLAGS(dbp->dbenv, "c_del", flags, 0);
/*
* The cursor must be initialized, return -1 for an invalid cursor,
* otherwise 0.
*/
return (isvalid ? 0 : EINVAL);
}
/*
* __db_cgetchk --
* Common cursor get argument checking routine.
*
* PUBLIC: int __db_cgetchk __P((const DB *, DBT *, DBT *, u_int32_t, int));
*/
int
__db_cgetchk(dbp, key, data, flags, isvalid)
const DB *dbp;
DBT *key, *data;
u_int32_t flags;
int isvalid;
{
int key_einval, key_flags;
key_flags = key_einval = 0;
/* Check for invalid dbc->c_get() function flags. */
switch (flags) {
case DB_CURRENT:
case DB_FIRST:
case DB_LAST:
case DB_NEXT:
case DB_PREV:
key_flags = 1;
break;
case DB_SET_RANGE:
key_einval = key_flags = 1;
break;
case DB_SET:
key_einval = 1;
break;
case DB_GET_RECNO:
if (!F_ISSET(dbp, DB_BT_RECNUM))
goto err;
break;
case DB_SET_RECNO:
if (!F_ISSET(dbp, DB_BT_RECNUM))
goto err;
key_einval = key_flags = 1;
break;
default:
err: return (__db_ferr(dbp->dbenv, "c_get", 0));
}
/* Check for invalid key/data flags. */
if (key_flags)
DB_CHECK_FLAGS(dbp->dbenv, "key", key->flags,
DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL);
DB_CHECK_FLAGS(dbp->dbenv, "data", data->flags,
DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL);
/* Check dbt's for valid flags when multi-threaded. */
if (F_ISSET(dbp, DB_AM_THREAD)) {
if (!F_ISSET(data, DB_DBT_USERMEM | DB_DBT_MALLOC))
return (__db_ferr(dbp->dbenv, "threaded data", 1));
if (key_flags &&
!F_ISSET(key, DB_DBT_USERMEM | DB_DBT_MALLOC))
return (__db_ferr(dbp->dbenv, "threaded key", 1));
}
/* Check for missing keys. */
if (key_einval && (key->data == NULL || key->size == 0))
return (__db_keyempty(dbp->dbenv));
/*
* The cursor must be initialized for DB_CURRENT, return -1 for an
* invalid cursor, otherwise 0.
*/
return (isvalid || flags != DB_CURRENT ? 0 : EINVAL);
}
/*
* __db_cputchk --
* Common cursor put argument checking routine.
*
* PUBLIC: int __db_cputchk __P((const DB *,
* PUBLIC: const DBT *, DBT *, u_int32_t, int, int));
*/
int
__db_cputchk(dbp, key, data, flags, isrdonly, isvalid)
const DB *dbp;
const DBT *key;
DBT *data;
u_int32_t flags;
int isrdonly, isvalid;
{
int key_einval, key_flags;
/* Check for changes to a read-only tree. */
if (isrdonly)
return (__db_rdonly(dbp->dbenv, "c_put"));
/* Check for invalid dbc->c_put() function flags. */
key_einval = key_flags = 0;
switch (flags) {
case DB_AFTER:
case DB_BEFORE:
if (dbp->type == DB_RECNO && !F_ISSET(dbp, DB_RE_RENUMBER))
goto err;
if (dbp->type != DB_RECNO && !F_ISSET(dbp, DB_AM_DUP))
goto err;
break;
case DB_CURRENT:
break;
case DB_KEYFIRST:
case DB_KEYLAST:
if (dbp->type == DB_RECNO)
goto err;
key_einval = key_flags = 1;
break;
default:
err: return (__db_ferr(dbp->dbenv, "c_put", 0));
}
/* Check for invalid key/data flags. */
if (key_flags)
DB_CHECK_FLAGS(dbp->dbenv, "key", key->flags,
DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL);
DB_CHECK_FLAGS(dbp->dbenv, "data", data->flags,
DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL);
/* Check for missing keys. */
if (key_einval && (key->data == NULL || key->size == 0))
return (__db_keyempty(dbp->dbenv));
/*
* The cursor must be initialized for anything other than DB_KEYFIRST
* and DB_KEYLAST, return -1 for an invalid cursor, otherwise 0.
*/
return (isvalid ||
(flags != DB_KEYFIRST && flags != DB_KEYLAST) ? 0 : EINVAL);
}
/*
* __db_delchk --
* Common delete argument checking routine.
*
* PUBLIC: int __db_delchk __P((const DB *, DBT *, u_int32_t, int));
*/
int
__db_delchk(dbp, key, flags, isrdonly)
const DB *dbp;
DBT *key;
u_int32_t flags;
int isrdonly;
{
/* Check for changes to a read-only tree. */
if (isrdonly)
return (__db_rdonly(dbp->dbenv, "delete"));
/* Check for invalid db->del() function flags. */
DB_CHECK_FLAGS(dbp->dbenv, "delete", flags, 0);
/* Check for missing keys. */
if (key->data == NULL || key->size == 0)
return (__db_keyempty(dbp->dbenv));
return (0);
}
/*
* __db_getchk --
* Common get argument checking routine.
*
* PUBLIC: int __db_getchk __P((const DB *, const DBT *, DBT *, u_int32_t));
*/
int
__db_getchk(dbp, key, data, flags)
const DB *dbp;
const DBT *key;
DBT *data;
u_int32_t flags;
{
/* Check for invalid db->get() function flags. */
DB_CHECK_FLAGS(dbp->dbenv,
"get", flags, F_ISSET(dbp, DB_BT_RECNUM) ? DB_SET_RECNO : 0);
/* Check for invalid key/data flags. */
DB_CHECK_FLAGS(dbp->dbenv, "key", key->flags, 0);
DB_CHECK_FLAGS(dbp->dbenv, "data", data->flags,
DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL);
DB_CHECK_FCOMBO(dbp->dbenv,
"data", data->flags, DB_DBT_MALLOC, DB_DBT_USERMEM);
if (F_ISSET(dbp, DB_AM_THREAD) &&
!F_ISSET(data, DB_DBT_MALLOC | DB_DBT_USERMEM))
return (__db_ferr(dbp->dbenv, "threaded data", 1));
/* Check for missing keys. */
if (key->data == NULL || key->size == 0)
return (__db_keyempty(dbp->dbenv));
return (0);
}
/*
* __db_putchk --
* Common put argument checking routine.
*
* PUBLIC: int __db_putchk
* PUBLIC: __P((const DB *, DBT *, const DBT *, u_int32_t, int, int));
*/
int
__db_putchk(dbp, key, data, flags, isrdonly, isdup)
const DB *dbp;
DBT *key;
const DBT *data;
u_int32_t flags;
int isrdonly, isdup;
{
/* Check for changes to a read-only tree. */
if (isrdonly)
return (__db_rdonly(dbp->dbenv, "put"));
/* Check for invalid db->put() function flags. */
DB_CHECK_FLAGS(dbp->dbenv, "put", flags,
DB_NOOVERWRITE | (dbp->type == DB_RECNO ? DB_APPEND : 0));
/* Check for invalid key/data flags. */
DB_CHECK_FLAGS(dbp->dbenv, "key", key->flags, 0);
DB_CHECK_FLAGS(dbp->dbenv, "data", data->flags,
DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL);
DB_CHECK_FCOMBO(dbp->dbenv,
"data", data->flags, DB_DBT_MALLOC, DB_DBT_USERMEM);
/* Check for missing keys. */
if (key->data == NULL || key->size == 0)
return (__db_keyempty(dbp->dbenv));
/* Check for partial puts in the presence of duplicates. */
if (isdup && F_ISSET(data, DB_DBT_PARTIAL)) {
__db_err(dbp->dbenv,
"a partial put in the presence of duplicates requires a cursor operation");
return (EINVAL);
}
return (0);
}
/*
* __db_statchk --
* Common stat argument checking routine.
*
* PUBLIC: int __db_statchk __P((const DB *, u_int32_t));
*/
int
__db_statchk(dbp, flags)
const DB *dbp;
u_int32_t flags;
{
/* Check for invalid db->stat() function flags. */
DB_CHECK_FLAGS(dbp->dbenv, "stat", flags, DB_RECORDCOUNT);
if (LF_ISSET(DB_RECORDCOUNT) &&
dbp->type == DB_BTREE && !F_ISSET(dbp, DB_BT_RECNUM))
return (__db_ferr(dbp->dbenv, "stat", 0));
return (0);
}
/*
* __db_syncchk --
* Common sync argument checking routine.
*
* PUBLIC: int __db_syncchk __P((const DB *, u_int32_t));
*/
int
__db_syncchk(dbp, flags)
const DB *dbp;
u_int32_t flags;
{
/* Check for invalid db->sync() function flags. */
DB_CHECK_FLAGS(dbp->dbenv, "sync", flags, 0);
return (0);
}
/*
* __db_ferr --
* Common flag errors.
*
* PUBLIC: int __db_ferr __P((const DB_ENV *, const char *, int));
*/
int
__db_ferr(dbenv, name, iscombo)
const DB_ENV *dbenv;
const char *name;
int iscombo;
{
__db_err(dbenv, "illegal flag %sspecified to %s",
iscombo ? "combination " : "", name);
return (EINVAL);
}
/*
* __db_rdonly --
* Common readonly message.
*/
static int
__db_rdonly(dbenv, name)
const DB_ENV *dbenv;
const char *name;
{
__db_err(dbenv, "%s: attempt to modify a read-only tree", name);
return (EACCES);
}
/*
* __db_keyempty --
* Common missing or empty key value message.
*/
static int
__db_keyempty(dbenv)
const DB_ENV *dbenv;
{
__db_err(dbenv, "missing or empty key value specified");
return (EINVAL);
}