#include "db_config.h"
#include "db_int.h"
#include "dbinc/log.h"
int
__log_env_create(dbenv)
DB_ENV *dbenv;
{
dbenv->lg_bsize = 0;
dbenv->lg_regionmax = LG_BASE_REGION_SIZE;
return (0);
}
void
__log_env_destroy(dbenv)
DB_ENV *dbenv;
{
COMPQUIET(dbenv, NULL);
}
int
__log_get_lg_bsize(dbenv, lg_bsizep)
DB_ENV *dbenv;
u_int32_t *lg_bsizep;
{
ENV *env;
env = dbenv->env;
ENV_NOT_CONFIGURED(env,
env->lg_handle, "DB_ENV->get_lg_bsize", DB_INIT_LOG);
if (LOGGING_ON(env)) {
*lg_bsizep =
((LOG *)env->lg_handle->reginfo.primary)->buffer_size;
} else
*lg_bsizep = dbenv->lg_bsize;
return (0);
}
int
__log_set_lg_bsize(dbenv, lg_bsize)
DB_ENV *dbenv;
u_int32_t lg_bsize;
{
ENV *env;
env = dbenv->env;
ENV_ILLEGAL_AFTER_OPEN(env, "DB_ENV->set_lg_bsize");
dbenv->lg_bsize = lg_bsize;
return (0);
}
int
__log_get_lg_filemode(dbenv, lg_modep)
DB_ENV *dbenv;
int *lg_modep;
{
DB_LOG *dblp;
DB_THREAD_INFO *ip;
ENV *env;
env = dbenv->env;
ENV_NOT_CONFIGURED(env,
env->lg_handle, "DB_ENV->get_lg_filemode", DB_INIT_LOG);
if (LOGGING_ON(env)) {
dblp = env->lg_handle;
ENV_ENTER(env, ip);
LOG_SYSTEM_LOCK(env);
*lg_modep = ((LOG *)dblp->reginfo.primary)->filemode;
LOG_SYSTEM_UNLOCK(env);
ENV_LEAVE(env, ip);
} else
*lg_modep = dbenv->lg_filemode;
return (0);
}
int
__log_set_lg_filemode(dbenv, lg_mode)
DB_ENV *dbenv;
int lg_mode;
{
DB_LOG *dblp;
DB_THREAD_INFO *ip;
ENV *env;
LOG *lp;
env = dbenv->env;
ENV_NOT_CONFIGURED(env,
env->lg_handle, "DB_ENV->set_lg_filemode", DB_INIT_LOG);
if (LOGGING_ON(env)) {
dblp = env->lg_handle;
lp = dblp->reginfo.primary;
ENV_ENTER(env, ip);
LOG_SYSTEM_LOCK(env);
lp->filemode = lg_mode;
LOG_SYSTEM_UNLOCK(env);
ENV_LEAVE(env, ip);
} else
dbenv->lg_filemode = lg_mode;
return (0);
}
int
__log_get_lg_max(dbenv, lg_maxp)
DB_ENV *dbenv;
u_int32_t *lg_maxp;
{
DB_LOG *dblp;
DB_THREAD_INFO *ip;
ENV *env;
env = dbenv->env;
ENV_NOT_CONFIGURED(env,
env->lg_handle, "DB_ENV->get_lg_max", DB_INIT_LOG);
if (LOGGING_ON(env)) {
dblp = env->lg_handle;
ENV_ENTER(env, ip);
LOG_SYSTEM_LOCK(env);
*lg_maxp = ((LOG *)dblp->reginfo.primary)->log_nsize;
LOG_SYSTEM_UNLOCK(env);
ENV_LEAVE(env, ip);
} else
*lg_maxp = dbenv->lg_size;
return (0);
}
int
__log_set_lg_max(dbenv, lg_max)
DB_ENV *dbenv;
u_int32_t lg_max;
{
DB_LOG *dblp;
DB_THREAD_INFO *ip;
ENV *env;
LOG *lp;
int ret;
env = dbenv->env;
ret = 0;
ENV_NOT_CONFIGURED(env,
env->lg_handle, "DB_ENV->set_lg_max", DB_INIT_LOG);
if (LOGGING_ON(env)) {
dblp = env->lg_handle;
lp = dblp->reginfo.primary;
ENV_ENTER(env, ip);
if ((ret = __log_check_sizes(env, lg_max, 0)) == 0) {
LOG_SYSTEM_LOCK(env);
lp->log_nsize = lg_max;
LOG_SYSTEM_UNLOCK(env);
}
ENV_LEAVE(env, ip);
} else
dbenv->lg_size = lg_max;
return (ret);
}
int
__log_get_lg_regionmax(dbenv, lg_regionmaxp)
DB_ENV *dbenv;
u_int32_t *lg_regionmaxp;
{
ENV *env;
env = dbenv->env;
ENV_NOT_CONFIGURED(env,
env->lg_handle, "DB_ENV->get_lg_regionmax", DB_INIT_LOG);
if (LOGGING_ON(env)) {
*lg_regionmaxp =
((LOG *)env->lg_handle->reginfo.primary)->regionmax;
} else
*lg_regionmaxp = dbenv->lg_regionmax;
return (0);
}
int
__log_set_lg_regionmax(dbenv, lg_regionmax)
DB_ENV *dbenv;
u_int32_t lg_regionmax;
{
ENV *env;
env = dbenv->env;
ENV_ILLEGAL_AFTER_OPEN(env, "DB_ENV->set_lg_regionmax");
if (lg_regionmax != 0 && lg_regionmax < LG_BASE_REGION_SIZE) {
__db_errx(env,
"log region size must be >= %d", LG_BASE_REGION_SIZE);
return (EINVAL);
}
dbenv->lg_regionmax = lg_regionmax;
return (0);
}
int
__log_get_lg_dir(dbenv, dirp)
DB_ENV *dbenv;
const char **dirp;
{
*dirp = dbenv->db_log_dir;
return (0);
}
int
__log_set_lg_dir(dbenv, dir)
DB_ENV *dbenv;
const char *dir;
{
ENV *env;
env = dbenv->env;
if (dbenv->db_log_dir != NULL)
__os_free(env, dbenv->db_log_dir);
return (__os_strdup(env, dir, &dbenv->db_log_dir));
}
void
__log_get_flags(dbenv, flagsp)
DB_ENV *dbenv;
u_int32_t *flagsp;
{
DB_LOG *dblp;
ENV *env;
LOG *lp;
u_int32_t flags;
env = dbenv->env;
if ((dblp = env->lg_handle) == NULL)
return;
lp = dblp->reginfo.primary;
flags = *flagsp;
if (lp->db_log_autoremove)
LF_SET(DB_LOG_AUTO_REMOVE);
else
LF_CLR(DB_LOG_AUTO_REMOVE);
if (lp->db_log_inmemory)
LF_SET(DB_LOG_IN_MEMORY);
else
LF_CLR(DB_LOG_IN_MEMORY);
*flagsp = flags;
}
void
__log_set_flags(env, flags, on)
ENV *env;
u_int32_t flags;
int on;
{
DB_LOG *dblp;
LOG *lp;
if ((dblp = env->lg_handle) == NULL)
return;
lp = dblp->reginfo.primary;
if (LF_ISSET(DB_LOG_AUTO_REMOVE))
lp->db_log_autoremove = on ? 1 : 0;
if (LF_ISSET(DB_LOG_IN_MEMORY))
lp->db_log_inmemory = on ? 1 : 0;
}
#undef OK_FLAGS
#define OK_FLAGS \
(DB_LOG_AUTO_REMOVE | DB_LOG_DIRECT | \
DB_LOG_DSYNC | DB_LOG_IN_MEMORY | DB_LOG_ZERO)
#ifndef BREW
static
#endif
const FLAG_MAP LogMap[] = {
{ DB_LOG_AUTO_REMOVE, DBLOG_AUTOREMOVE},
{ DB_LOG_DIRECT, DBLOG_DIRECT},
{ DB_LOG_DSYNC, DBLOG_DSYNC},
{ DB_LOG_IN_MEMORY, DBLOG_INMEMORY},
{ DB_LOG_ZERO, DBLOG_ZERO}
};
int
__log_get_config(dbenv, which, onp)
DB_ENV *dbenv;
u_int32_t which;
int *onp;
{
ENV *env;
DB_LOG *dblp;
u_int32_t flags;
env = dbenv->env;
if (FLD_ISSET(which, ~OK_FLAGS))
return (__db_ferr(env, "DB_ENV->log_get_config", 0));
dblp = env->lg_handle;
ENV_REQUIRES_CONFIG(env, dblp, "DB_ENV->log_get_config", DB_INIT_LOG);
__env_fetch_flags(LogMap, sizeof(LogMap), &dblp->flags, &flags);
__log_get_flags(dbenv, &flags);
if (LF_ISSET(which))
*onp = 1;
else
*onp = 0;
return (0);
}
int
__log_set_config(dbenv, flags, on)
DB_ENV *dbenv;
u_int32_t flags;
int on;
{
return (__log_set_config_int(dbenv, flags, on, 0));
}
int
__log_set_config_int(dbenv, flags, on, in_open)
DB_ENV *dbenv;
u_int32_t flags;
int on;
int in_open;
{
ENV *env;
DB_LOG *dblp;
u_int32_t mapped_flags;
env = dbenv->env;
dblp = env->lg_handle;
if (FLD_ISSET(flags, ~OK_FLAGS))
return (__db_ferr(env, "DB_ENV->log_set_config", 0));
ENV_NOT_CONFIGURED(env, dblp, "DB_ENV->log_set_config", DB_INIT_LOG);
if (LF_ISSET(DB_LOG_DIRECT) && __os_support_direct_io() == 0) {
__db_errx(env,
"DB_ENV->log_set_config: direct I/O either not configured or not supported");
return (EINVAL);
}
if (LOGGING_ON(env)) {
if (!in_open && LF_ISSET(DB_LOG_IN_MEMORY))
ENV_ILLEGAL_AFTER_OPEN(env,
"DB_ENV->log_set_config: DB_LOG_IN_MEMORY");
__log_set_flags(env, flags, on);
mapped_flags = 0;
__env_map_flags(LogMap, sizeof(LogMap), &flags, &mapped_flags);
if (on)
F_SET(dblp, mapped_flags);
else
F_CLR(dblp, mapped_flags);
} else {
if (on && LF_ISSET(DB_LOG_IN_MEMORY))
F_CLR(dbenv,
DB_ENV_TXN_NOSYNC | DB_ENV_TXN_WRITE_NOSYNC);
if (on)
FLD_SET(dbenv->lg_flags, flags);
else
FLD_CLR(dbenv->lg_flags, flags);
}
return (0);
}
int
__log_check_sizes(env, lg_max, lg_bsize)
ENV *env;
u_int32_t lg_max;
u_int32_t lg_bsize;
{
DB_ENV *dbenv;
LOG *lp;
int inmem;
dbenv = env->dbenv;
if (LOGGING_ON(env)) {
lp = env->lg_handle->reginfo.primary;
inmem = lp->db_log_inmemory;
lg_bsize = lp->buffer_size;
} else
inmem = (FLD_ISSET(dbenv->lg_flags, DB_LOG_IN_MEMORY) != 0);
if (inmem) {
if (lg_bsize == 0)
lg_bsize = LG_BSIZE_INMEM;
if (lg_max == 0)
lg_max = LG_MAX_INMEM;
if (lg_bsize <= lg_max) {
__db_errx(env,
"in-memory log buffer must be larger than the log file size");
return (EINVAL);
}
}
return (0);
}