db_server_cxxutil.cpp [plain text]
#include "db_config.h"
#include "db_int.h"
#include "db_cxx.h"
#include "db_server.h"
#include "dbinc_auto/clib_ext.h"
extern "C" {
#include "dbinc/db_server_int.h"
#include "dbinc_auto/rpc_server_ext.h"
#include "dbinc_auto/common_ext.h"
extern int __dbsrv_main __P((void));
}
static int add_home __P((char *));
static int add_passwd __P((char *));
static int env_recover __P((char *));
static void __dbclear_child __P((ct_entry *));
static LIST_HEAD(cthead, ct_entry) __dbsrv_head;
static LIST_HEAD(homehead, home_entry) __dbsrv_home;
static long __dbsrv_defto = DB_SERVER_TIMEOUT;
static long __dbsrv_maxto = DB_SERVER_MAXTIMEOUT;
static long __dbsrv_idleto = DB_SERVER_IDLETIMEOUT;
static char *logfile = NULL;
static char *prog;
static void usage __P((char *));
static void version_check __P((void));
int __dbsrv_verbose = 0;
int
main(
int argc,
char **argv)
{
extern char *optarg;
CLIENT *cl;
int ch, ret;
char *passwd;
prog = argv[0];
version_check();
if ((cl = clnt_create("localhost",
DB_RPC_SERVERPROG, DB_RPC_SERVERVERS, "tcp")) != NULL) {
fprintf(stderr,
"%s: Berkeley DB RPC server already running.\n", prog);
clnt_destroy(cl);
return (EXIT_FAILURE);
}
LIST_INIT(&__dbsrv_home);
while ((ch = getopt(argc, argv, "h:I:L:P:t:T:Vv")) != EOF)
switch (ch) {
case 'h':
(void)add_home(optarg);
break;
case 'I':
if (__db_getlong(NULL, prog,
optarg, 1, LONG_MAX, &__dbsrv_idleto))
return (EXIT_FAILURE);
break;
case 'L':
logfile = optarg;
break;
case 'P':
passwd = strdup(optarg);
memset(optarg, 0, strlen(optarg));
if (passwd == NULL) {
fprintf(stderr, "%s: strdup: %s\n",
prog, strerror(errno));
return (EXIT_FAILURE);
}
if ((ret = add_passwd(passwd)) != 0) {
fprintf(stderr, "%s: strdup: %s\n",
prog, strerror(ret));
return (EXIT_FAILURE);
}
break;
case 't':
if (__db_getlong(NULL, prog,
optarg, 1, LONG_MAX, &__dbsrv_defto))
return (EXIT_FAILURE);
break;
case 'T':
if (__db_getlong(NULL, prog,
optarg, 1, LONG_MAX, &__dbsrv_maxto))
return (EXIT_FAILURE);
break;
case 'V':
printf("%s\n", db_version(NULL, NULL, NULL));
return (EXIT_SUCCESS);
case 'v':
__dbsrv_verbose = 1;
break;
default:
usage(prog);
}
if (__dbsrv_defto > __dbsrv_maxto)
__dbsrv_defto = __dbsrv_maxto;
if (__dbsrv_defto > __dbsrv_idleto)
fprintf(stderr,
"%s: WARNING: Idle timeout %ld is less than resource timeout %ld\n",
prog, __dbsrv_idleto, __dbsrv_defto);
LIST_INIT(&__dbsrv_head);
#ifdef SIGPIPE
signal(SIGPIPE, SIG_IGN);
#endif
if (logfile != NULL && __db_util_logset("berkeley_db_svc", logfile))
return (EXIT_FAILURE);
if (env_recover(prog) != 0)
return (EXIT_FAILURE);
if (__dbsrv_verbose)
printf("%s: Ready to receive requests\n", prog);
__dbsrv_main();
abort();
}
static void
usage(char *prog)
{
fprintf(stderr, "usage: %s %s\n\t%s\n", prog,
"[-Vv] [-h home] [-P passwd]",
"[-I idletimeout] [-L logfile] [-t def_timeout] [-T maxtimeout]");
exit(EXIT_FAILURE);
}
static void
version_check()
{
int v_major, v_minor, v_patch;
(void)db_version(&v_major, &v_minor, &v_patch);
if (v_major != DB_VERSION_MAJOR ||
v_minor != DB_VERSION_MINOR || v_patch != DB_VERSION_PATCH) {
fprintf(stderr,
"%s: version %d.%d.%d doesn't match library version %d.%d.%d\n",
prog, DB_VERSION_MAJOR, DB_VERSION_MINOR,
DB_VERSION_PATCH, v_major, v_minor, v_patch);
exit(EXIT_FAILURE);
}
}
extern "C" void
__dbsrv_settimeout(
ct_entry *ctp,
u_int32_t to)
{
if (to > (u_int32_t)__dbsrv_maxto)
ctp->ct_timeout = __dbsrv_maxto;
else if (to <= 0)
ctp->ct_timeout = __dbsrv_defto;
else
ctp->ct_timeout = to;
}
extern "C" void
__dbsrv_timeout(int force)
{
static long to_hint = -1;
time_t t;
long to;
ct_entry *ctp, *nextctp;
if ((t = time(NULL)) == -1)
return;
if (!force && to_hint > 0 && t < to_hint)
return;
to_hint = -1;
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL; ctp = nextctp) {
nextctp = LIST_NEXT(ctp, entries);
switch (ctp->ct_type) {
case CT_TXN:
to = *(ctp->ct_activep) + ctp->ct_timeout;
if (to < t) {
if (__dbsrv_verbose)
printf("Timing out txn id %ld\n",
ctp->ct_id);
(void)((DbTxn *)ctp->ct_anyp)->abort();
__dbdel_ctp(ctp);
nextctp = LIST_FIRST(&__dbsrv_head);
} else if ((to_hint > 0 && to_hint > to) ||
to_hint == -1)
to_hint = to;
break;
case CT_CURSOR:
case (CT_JOINCUR | CT_CURSOR):
to = *(ctp->ct_activep) + ctp->ct_timeout;
if (to < t) {
if (__dbsrv_verbose)
printf("Timing out cursor %ld\n",
ctp->ct_id);
(void)__dbc_close_int(ctp);
nextctp = LIST_FIRST(&__dbsrv_head);
} else if ((to_hint > 0 && to_hint > to) ||
to_hint == -1)
to_hint = to;
break;
default:
break;
}
}
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL; ctp = nextctp) {
nextctp = LIST_NEXT(ctp, entries);
if (ctp->ct_type != CT_ENV)
continue;
to = *(ctp->ct_activep) + ctp->ct_idle;
if (to < t || force) {
if (__dbsrv_verbose)
printf("Timing out env id %ld\n", ctp->ct_id);
(void)__env_close_int(ctp->ct_id, 0, 1);
nextctp = LIST_FIRST(&__dbsrv_head);
}
}
}
static void
__dbclear_child(ct_entry *parent)
{
ct_entry *ctp, *nextctp;
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL;
ctp = nextctp) {
nextctp = LIST_NEXT(ctp, entries);
if (ctp->ct_type == 0)
continue;
if (ctp->ct_parent == parent) {
__dbclear_child(ctp);
nextctp = LIST_NEXT(ctp, entries);
__dbclear_ctp(ctp);
}
}
}
extern "C" void
__dbclear_ctp(ct_entry *ctp)
{
LIST_REMOVE(ctp, entries);
__os_free(NULL, ctp);
}
extern "C" void
__dbdel_ctp(ct_entry *parent)
{
__dbclear_child(parent);
__dbclear_ctp(parent);
}
extern "C" ct_entry *
new_ct_ent(int *errp)
{
time_t t;
ct_entry *ctp, *octp;
int ret;
if ((ret = __os_malloc(NULL, sizeof(ct_entry), &ctp)) != 0) {
*errp = ret;
return (NULL);
}
memset(ctp, 0, sizeof(ct_entry));
if ((t = time(NULL)) == -1) {
*errp = __os_get_errno();
__os_free(NULL, ctp);
return (NULL);
}
octp = LIST_FIRST(&__dbsrv_head);
if (octp != NULL && octp->ct_id >= t)
t = octp->ct_id + 1;
ctp->ct_id = t;
ctp->ct_idle = __dbsrv_idleto;
ctp->ct_activep = &ctp->ct_active;
ctp->ct_origp = NULL;
ctp->ct_refcount = 1;
LIST_INSERT_HEAD(&__dbsrv_head, ctp, entries);
return (ctp);
}
extern "C" ct_entry *
get_tableent(long id)
{
ct_entry *ctp;
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL;
ctp = LIST_NEXT(ctp, entries))
if (ctp->ct_id == id)
return (ctp);
return (NULL);
}
extern "C" ct_entry *
__dbsrv_sharedb(ct_entry *db_ctp,
const char *name, const char *subdb, DBTYPE type, u_int32_t flags)
{
ct_entry *ctp;
if (flags & DB_SERVER_DBNOSHARE)
return (NULL);
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL;
ctp = LIST_NEXT(ctp, entries)) {
if (ctp == db_ctp)
continue;
if (ctp->ct_type != CT_DB)
continue;
if (ctp->ct_envparent != db_ctp->ct_envparent)
continue;
if (type != DB_UNKNOWN && ctp->ct_dbdp.type != type)
continue;
if (ctp->ct_dbdp.dbflags != LF_ISSET(DB_SERVER_DBFLAGS))
continue;
if (db_ctp->ct_dbdp.setflags != 0 &&
ctp->ct_dbdp.setflags != db_ctp->ct_dbdp.setflags)
continue;
if (name == NULL || ctp->ct_dbdp.db == NULL ||
strcmp(name, ctp->ct_dbdp.db) != 0)
continue;
if (subdb != ctp->ct_dbdp.subdb &&
(subdb == NULL || ctp->ct_dbdp.subdb == NULL ||
strcmp(subdb, ctp->ct_dbdp.subdb) != 0))
continue;
ctp->ct_refcount++;
return (ctp);
}
return (NULL);
}
extern "C" ct_entry *
__dbsrv_shareenv(ct_entry *env_ctp, home_entry *home, u_int32_t flags)
{
ct_entry *ctp;
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL;
ctp = LIST_NEXT(ctp, entries)) {
if (ctp == env_ctp)
continue;
if (ctp->ct_type != CT_ENV)
continue;
if (ctp->ct_envdp.home != home)
continue;
if (ctp->ct_envdp.envflags != flags)
continue;
if (ctp->ct_envdp.onflags != env_ctp->ct_envdp.onflags)
continue;
if (ctp->ct_envdp.offflags != env_ctp->ct_envdp.offflags)
continue;
if (ctp->ct_timeout < env_ctp->ct_timeout)
ctp->ct_timeout = env_ctp->ct_timeout;
ctp->ct_refcount++;
return (ctp);
}
return (NULL);
}
extern "C" void
__dbsrv_active(ct_entry *ctp)
{
time_t t;
ct_entry *envctp;
if (ctp == NULL)
return;
if ((t = time(NULL)) == -1)
return;
*(ctp->ct_activep) = t;
if ((envctp = ctp->ct_envparent) == NULL)
return;
*(envctp->ct_activep) = t;
return;
}
extern "C" int
__db_close_int(long id, u_int32_t flags)
{
Db *dbp;
int ret;
ct_entry *ctp;
ret = 0;
ctp = get_tableent(id);
if (ctp == NULL)
return (DB_NOSERVER_ID);
DB_ASSERT(NULL, ctp->ct_type == CT_DB);
if (__dbsrv_verbose && ctp->ct_refcount != 1)
printf("Deref'ing dbp id %ld, refcount %d\n",
id, ctp->ct_refcount);
if (--ctp->ct_refcount != 0)
return (ret);
dbp = ctp->ct_dbp;
if (__dbsrv_verbose)
printf("Closing dbp id %ld\n", id);
ret = dbp->close(flags);
__dbdel_ctp(ctp);
return (ret);
}
extern "C" int
__dbc_close_int(ct_entry *dbc_ctp)
{
Dbc *dbc;
int ret;
ct_entry *ctp;
dbc = (Dbc *)dbc_ctp->ct_anyp;
ret = dbc->close();
if (dbc_ctp->ct_type & CT_JOINCUR)
for (ctp = LIST_FIRST(&__dbsrv_head); ctp != NULL;
ctp = LIST_NEXT(ctp, entries)) {
if ((ctp->ct_type & CT_JOIN) &&
ctp->ct_activep == &dbc_ctp->ct_active) {
ctp->ct_type &= ~CT_JOIN;
ctp->ct_activep = ctp->ct_origp;
__dbsrv_active(ctp);
}
}
__dbclear_ctp(dbc_ctp);
return (ret);
}
extern "C" int
__env_close_int(long id, u_int32_t flags, int force)
{
DbEnv *dbenv;
int ret;
ct_entry *ctp, *dbctp, *nextctp;
ret = 0;
ctp = get_tableent(id);
if (ctp == NULL)
return (DB_NOSERVER_ID);
DB_ASSERT(NULL, ctp->ct_type == CT_ENV);
if (__dbsrv_verbose && ctp->ct_refcount != 1)
printf("Deref'ing env id %ld, refcount %d\n",
id, ctp->ct_refcount);
if (--ctp->ct_refcount != 0 && !force)
return (ret);
dbenv = ctp->ct_envp;
if (__dbsrv_verbose)
printf("Closing env id %ld\n", id);
if (force)
for (dbctp = LIST_FIRST(&__dbsrv_head);
dbctp != NULL; dbctp = nextctp) {
nextctp = LIST_NEXT(dbctp, entries);
if (dbctp->ct_type != CT_DB)
continue;
if (dbctp->ct_envparent != ctp)
continue;
__db_close_int(dbctp->ct_id, 0);
nextctp = LIST_FIRST(&__dbsrv_head);
}
ret = dbenv->close(flags);
__dbdel_ctp(ctp);
return (ret);
}
static int
add_home(char *home)
{
home_entry *hp, *homep;
int ret;
if ((ret = __os_malloc(NULL, sizeof(home_entry), &hp)) != 0)
return (ret);
if ((ret = __os_malloc(NULL, strlen(home)+1, &hp->home)) != 0)
return (ret);
memcpy(hp->home, home, strlen(home)+1);
hp->dir = home;
hp->passwd = NULL;
hp->name = __db_rpath(home);
if (hp->name != NULL) {
*(hp->name) = '\0';
hp->name++;
} else
hp->name = home;
while (*(hp->name) == '\0') {
hp->name = __db_rpath(home);
*(hp->name) = '\0';
hp->name++;
}
for (homep = LIST_FIRST(&__dbsrv_home); homep != NULL;
homep = LIST_NEXT(homep, entries))
if (strcmp(homep->name, hp->name) == 0) {
printf("Already added home name %s, at directory %s\n",
hp->name, homep->dir);
return (-1);
}
LIST_INSERT_HEAD(&__dbsrv_home, hp, entries);
if (__dbsrv_verbose)
printf("Added home %s in dir %s\n", hp->name, hp->dir);
return (0);
}
static int
add_passwd(char *passwd)
{
home_entry *hp;
hp = LIST_FIRST(&__dbsrv_home);
if (hp == NULL || hp->passwd != NULL)
return (EINVAL);
hp->passwd = passwd;
return (0);
}
extern "C" home_entry *
get_fullhome(char *name)
{
home_entry *hp;
if (name == NULL)
return (NULL);
for (hp = LIST_FIRST(&__dbsrv_home); hp != NULL;
hp = LIST_NEXT(hp, entries))
if (strcmp(name, hp->name) == 0)
return (hp);
return (NULL);
}
static int
env_recover(char *progname)
{
DbEnv *dbenv;
home_entry *hp;
u_int32_t flags;
int exitval, ret;
for (hp = LIST_FIRST(&__dbsrv_home); hp != NULL;
hp = LIST_NEXT(hp, entries)) {
exitval = 0;
dbenv = new DbEnv(DB_CXX_NO_EXCEPTIONS);
if (__dbsrv_verbose == 1)
(void)dbenv->set_verbose(DB_VERB_RECOVERY, 1);
dbenv->set_errfile(stderr);
dbenv->set_errpfx(progname);
if (hp->passwd != NULL)
(void)dbenv->set_encrypt(hp->passwd, DB_ENCRYPT_AES);
if (__dbsrv_verbose)
printf("Running recovery on %s\n", hp->home);
flags = DB_CREATE | DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL |
DB_INIT_TXN | DB_USE_ENVIRON | DB_RECOVER;
if ((ret = dbenv->open(hp->home, flags, 0)) != 0) {
dbenv->err(ret, "DbEnv->open");
goto error;
}
if (0) {
error: exitval = 1;
}
if ((ret = dbenv->close(0)) != 0) {
exitval = 1;
fprintf(stderr, "%s: dbenv->close: %s\n",
progname, db_strerror(ret));
}
if (exitval)
return (exitval);
}
return (0);
}