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rpm/rpmdb/db3.c

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/** \ingroup db3
* \file rpmdb/db3.c
*/
static int _debug = 1; /* XXX if < 0 debugging, > 0 unusual error returns */
#include "system.h"
#if defined(HAVE_FTOK) && defined(HAVE_SYS_IPC_H)
#include <sys/ipc.h>
#endif
#include <rpmlib.h>
#include <rpmmacro.h>
#include <rpmurl.h> /* XXX urlPath proto */
#include <rpmfileutil.h> /* rpmioMkPath */
#include "rpmdb/rpmdb_internal.h"
#include <rpmlog.h>
#include "debug.h"
#if !defined(DB_CLIENT) /* XXX db-4.2.42 retrofit */
#define DB_CLIENT DB_RPCCLIENT
#endif
/** \ingroup dbi
* Hash database statistics.
*/
struct dbiHStats_s {
unsigned int hash_magic; /*!< hash database magic number. */
unsigned int hash_version; /*!< version of the hash database. */
unsigned int hash_nkeys; /*!< no. of unique keys in the database. */
unsigned int hash_ndata; /*!< no. of key/data pairs in the database. */
unsigned int hash_pagesize; /*!< db page (and bucket) size, in bytes. */
unsigned int hash_nelem; /*!< estimated size of the hash table. */
unsigned int hash_ffactor; /*!< no. of items per bucket. */
unsigned int hash_buckets; /*!< no. of hash buckets. */
unsigned int hash_free; /*!< no. of pages on the free list. */
unsigned int hash_bfree; /*!< no. of bytes free on bucket pages. */
unsigned int hash_bigpages; /*!< no. of big key/data pages. */
unsigned int hash_big_bfree;/*!< no. of bytes free on big item pages. */
unsigned int hash_overflows;/*!< no. of overflow pages. */
unsigned int hash_ovfl_free;/*!< no. of bytes free on overflow pages. */
unsigned int hash_dup; /*!< no. of duplicate pages. */
unsigned int hash_dup_free; /*!< no. bytes free on duplicate pages. */
};
/** \ingroup dbi
* B-tree database statistics.
*/
struct dbiBStats_s {
unsigned int bt_magic; /*!< btree database magic. */
unsigned int bt_version; /*!< version of the btree database. */
unsigned int bt_nkeys; /*!< no. of unique keys in the database. */
unsigned int bt_ndata; /*!< no. of key/data pairs in the database. */
unsigned int bt_pagesize; /*!< database page size, in bytes. */
unsigned int bt_minkey; /*!< minimum keys per page. */
unsigned int bt_re_len; /*!< length of fixed-length records. */
unsigned int bt_re_pad; /*!< padding byte for fixed-length records. */
unsigned int bt_levels; /*!< no. of levels in the database. */
unsigned int bt_int_pg; /*!< no. of database internal pages. */
unsigned int bt_leaf_pg; /*!< no. of database leaf pages. */
unsigned int bt_dup_pg; /*!< no. of database duplicate pages. */
unsigned int bt_over_pg; /*!< no. of database overflow pages. */
unsigned int bt_free; /*!< no. of pages on the free list. */
unsigned int bt_int_pgfree; /*!< no. of bytes free in internal pages. */
unsigned int bt_leaf_pgfree;/*!< no. of bytes free in leaf pages. */
unsigned int bt_dup_pgfree; /*!< no. of bytes free in duplicate pages. */
unsigned int bt_over_pgfree;/*!< no. of bytes free in overflow pages. */
};
#ifdef NOTNOW
static const char * bfstring(unsigned int x, const char * xbf)
{
const char * s = xbf;
static char digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
static char buf[256];
char * t, * te;
unsigned radix;
unsigned c, i, k;
radix = (s != NULL ? *s++ : 16);
if (radix <= 1 || radix >= 32)
radix = 16;
t = buf;
switch (radix) {
case 8: *t++ = '0'; break;
case 16: *t++ = '0'; *t++ = 'x'; break;
}
i = 0;
k = x;
do { i++; k /= radix; } while (k);
te = t + i;
k = x;
do { --i; t[i] = digits[k % radix]; k /= radix; } while (k);
t = te;
i = '<';
if (s != NULL)
while ((c = *s++) != '\0') {
if (c > ' ') continue;
k = (1 << (c - 1));
if (!(x & k)) continue;
if (t == te) *t++ = '=';
*t++ = i;
i = ',';
while (*s > ' ')
*t++ = *s++;
}
if (t > te) *t++ = '>';
*t = '\0';
return buf;
}
static const char * dbtFlags =
"\20\1APPMALLOC\2ISSET\3MALLOC\4PARTIAL\5REALLOC\6USERMEM\7DUPOK";
static const char * dbenvOpenFlags =
"\20\1CREATE\2NO_EXCEPTIONS\3FORCE\4NOMMAP\5RDONLY\6RECOVER\7THREAD\10TXN_NOSYNC\11USE_ENVIRON\12USE_ENVIRON_ROOT\13CDB\14LOCK\15LOG\16MPOOL\17TXN\20JOINENV\21LOCKDOWN\22PRIVATE\23RECOVER_FATAL\24SYSTEM_MEM";
static const char * dbOpenFlags =
"\20\1CREATE\2NO_EXCEPTIONS\3FORCE\4NOMMAP\5RDONLY\6RECOVER\7THREAD\10TXN_NOSYNC\11USE_ENVIRON\12USE_ENVIRON_ROOT\13EXCL\14FCNTL_LOCKING\15RDWRMASTER\16TRUNCATE\17EXTENT\20APPLY_LOGREG";
static const char * dbenvSetFlags =
"\20\1CREATE\2NO_EXCEPTIONS\3FORCE\4NOMMAP\5RDONLY\6RECOVER\7THREAD\10TXN_NOSYNC\11USE_ENVIRON\12USE_ENVIRON_ROOT\13CDB_ALLDB\14NOLOCKING\15NOPANIC\16PANIC_ENV\17REGION_INIT\20YIELDCPU";
static const char * dbSetFlags =
"\20\1DUP\2DUPSORT\3RECNUM\4RENUMBER\5REVSPLITOFF\6SNAPSHOT";
static const char * dbiModeFlags =
"\20\1WRONLY\2RDWR\7CREAT\10EXCL\11NOCTTY\12TRUNC\13APPEND\14NONBLOCK\15SYNC\16ASYNC\17DIRECT\20LARGEFILE\21DIRECTORY\22NOFOLLOW";
#endif /* NOTNOW */
static int cvtdberr(dbiIndex dbi, const char * msg, int error, int printit)
{
int rc = error;
if (printit && rc) {
if (msg)
rpmlog(RPMLOG_ERR, _("db%d error(%d) from %s: %s\n"),
dbi->dbi_api, rc, msg, db_strerror(error));
else
rpmlog(RPMLOG_ERR, _("db%d error(%d): %s\n"),
dbi->dbi_api, rc, db_strerror(error));
}
return rc;
}
static int db_fini(dbiIndex dbi, const char * dbhome,
const char * dbfile,
const char * dbsubfile)
{
rpmdb rpmdb = dbi->dbi_rpmdb;
DB_ENV * dbenv = rpmdb->db_dbenv;
int rc;
if (dbenv == NULL)
return 0;
rc = dbenv->close(dbenv, 0);
rc = cvtdberr(dbi, "dbenv->close", rc, _debug);
if (dbfile)
rpmlog(RPMLOG_DEBUG, _("closed db environment %s/%s\n"),
dbhome, dbfile);
if (rpmdb->db_remove_env) {
int xx;
xx = db_env_create(&dbenv, 0);
xx = cvtdberr(dbi, "db_env_create", xx, _debug);
xx = dbenv->remove(dbenv, dbhome, 0);
xx = cvtdberr(dbi, "dbenv->remove", xx, _debug);
if (dbfile)
rpmlog(RPMLOG_DEBUG, _("removed db environment %s/%s\n"),
dbhome, dbfile);
}
return rc;
}
static int db3_fsync_disable(int fd)
{
return 0;
}
#if (DB_VERSION_MAJOR >= 4 && DB_VERSION_MINOR >= 5)
/*
* dbenv->failchk() callback method for determining is the given pid/tid
* is alive. We only care about pid's though.
*/
static int db3isalive(DB_ENV *dbenv, pid_t pid, db_threadid_t tid, uint32_t flags)
{
int alive = 0;
if (pid == getpid()) {
alive = 1;
} else if (kill(pid, 0) == 0) {
alive = 1;
/* only existing processes can fail with EPERM */
} else if (errno == EPERM) {
alive = 1;
}
return alive;
}
#endif
static int db_init(dbiIndex dbi, const char * dbhome,
const char * dbfile,
const char * dbsubfile,
DB_ENV ** dbenvp)
{
rpmdb rpmdb = dbi->dbi_rpmdb;
DB_ENV *dbenv = NULL;
int eflags;
int rc;
if (dbenvp == NULL)
return 1;
/* XXX HACK */
if (rpmdb->db_errfile == NULL)
rpmdb->db_errfile = stderr;
eflags = (dbi->dbi_oeflags | dbi->dbi_eflags);
if (eflags & DB_JOINENV) eflags &= DB_JOINENV;
if (dbfile)
rpmlog(RPMLOG_DEBUG, _("opening db environment %s/%s %s\n"),
dbhome, dbfile, prDbiOpenFlags(eflags, 1));
/* XXX Can't do RPC w/o host. */
if (dbi->dbi_host == NULL)
dbi->dbi_ecflags &= ~DB_CLIENT;
/* XXX Set a default shm_key. */
if ((dbi->dbi_eflags & DB_SYSTEM_MEM) && dbi->dbi_shmkey == 0) {
#if defined(HAVE_FTOK)
dbi->dbi_shmkey = ftok(dbhome, 0);
#else
dbi->dbi_shmkey = 0x44631380;
#endif
}
rc = db_env_create(&dbenv, dbi->dbi_ecflags);
rc = cvtdberr(dbi, "db_env_create", rc, _debug);
if (dbenv == NULL || rc)
goto errxit;
{ int xx;
/* 4.1: dbenv->set_app_dispatch(???) */
/* 4.1: dbenv->set_alloc(???) */
/* 4.1: dbenv->set_data_dir(???) */
/* 4.1: dbenv->set_encrypt(???) */
dbenv->set_errcall(dbenv, (void *) rpmdb->db_errcall);
dbenv->set_errfile(dbenv, rpmdb->db_errfile);
dbenv->set_errpfx(dbenv, rpmdb->db_errpfx);
/* 4.1: dbenv->set_feedback(???) */
/* 4.1: dbenv->set_flags(???) */
/* dbenv->set_paniccall(???) */
#if (DB_VERSION_MAJOR >= 4 && DB_VERSION_MINOR >= 5)
/*
* These enable automatic stale lock removal.
* thread_count 8 is some kind of "magic minimum" value...
*/
dbenv->set_thread_count(dbenv, 8);
dbenv->set_isalive(dbenv, db3isalive);
#endif
if ((dbi->dbi_ecflags & DB_CLIENT) && dbi->dbi_host) {
const char * home;
int retry = 0;
if ((home = strrchr(dbhome, '/')) != NULL)
dbhome = ++home;
while (retry++ < 5) {
xx = dbenv->set_rpc_server(dbenv, NULL, dbi->dbi_host,
dbi->dbi_cl_timeout, dbi->dbi_sv_timeout, 0);
xx = cvtdberr(dbi, "dbenv->set_server", xx, _debug);
if (!xx)
break;
(void) sleep(15);
}
} else {
#if !(DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
xx = dbenv->set_verbose(dbenv, DB_VERB_CHKPOINT,
(dbi->dbi_verbose & DB_VERB_CHKPOINT));
#endif
xx = dbenv->set_verbose(dbenv, DB_VERB_DEADLOCK,
(dbi->dbi_verbose & DB_VERB_DEADLOCK));
xx = dbenv->set_verbose(dbenv, DB_VERB_RECOVERY,
(dbi->dbi_verbose & DB_VERB_RECOVERY));
xx = dbenv->set_verbose(dbenv, DB_VERB_WAITSFOR,
(dbi->dbi_verbose & DB_VERB_WAITSFOR));
if (dbi->dbi_mmapsize) {
xx = dbenv->set_mp_mmapsize(dbenv, dbi->dbi_mmapsize);
xx = cvtdberr(dbi, "dbenv->set_mp_mmapsize", xx, _debug);
}
if (dbi->dbi_tmpdir) {
const char * root;
const char * tmpdir;
root = (dbi->dbi_root ? dbi->dbi_root : rpmdb->db_root);
if ((root[0] == '/' && root[1] == '\0') || rpmdb->db_chrootDone)
root = NULL;
tmpdir = rpmGenPath(root, dbi->dbi_tmpdir, NULL);
xx = dbenv->set_tmp_dir(dbenv, tmpdir);
xx = cvtdberr(dbi, "dbenv->set_tmp_dir", xx, _debug);
tmpdir = _free(tmpdir);
}
}
/* dbenv->set_lk_conflicts(???) */
/* dbenv->set_lk_detect(???) */
/* 4.1: dbenv->set_lk_max_lockers(???) */
/* 4.1: dbenv->set_lk_max_locks(???) */
/* 4.1: dbenv->set_lk_max_objects(???) */
/* 4.1: dbenv->set_lg_bsize(???) */
/* 4.1: dbenv->set_lg_dir(???) */
/* 4.1: dbenv->set_lg_max(???) */
/* 4.1: dbenv->set_lg_regionmax(???) */
if (dbi->dbi_cachesize) {
xx = dbenv->set_cachesize(dbenv, 0, dbi->dbi_cachesize, 0);
xx = cvtdberr(dbi, "dbenv->set_cachesize", xx, _debug);
}
/* 4.1 dbenv->set_timeout(???) */
/* dbenv->set_tx_max(???) */
/* 4.1: dbenv->set_tx_timestamp(???) */
/* dbenv->set_tx_recover(???) */
/* dbenv->set_rep_transport(???) */
/* dbenv->set_rep_limit(???) */
if (dbi->dbi_no_fsync) {
xx = db_env_set_func_fsync(db3_fsync_disable);
xx = cvtdberr(dbi, "db_env_set_func_fsync", xx, _debug);
}
if (dbi->dbi_shmkey) {
xx = dbenv->set_shm_key(dbenv, dbi->dbi_shmkey);
xx = cvtdberr(dbi, "dbenv->set_shm_key", xx, _debug);
}
}
rc = (dbenv->open)(dbenv, dbhome, eflags, dbi->dbi_perms);
rc = cvtdberr(dbi, "dbenv->open", rc, _debug);
if (rc)
goto errxit;
#if (DB_VERSION_MAJOR >= 4 && DB_VERSION_MINOR >= 5)
/* stale lock removal */
rc = dbenv->failchk(dbenv, 0);
#endif
*dbenvp = dbenv;
return 0;
errxit:
if (dbenv) {
int xx;
xx = dbenv->close(dbenv, 0);
xx = cvtdberr(dbi, "dbenv->close", xx, _debug);
}
return rc;
}
static int db3sync(dbiIndex dbi, unsigned int flags)
{
DB * db = dbi->dbi_db;
int rc = 0;
int _printit;
if (db != NULL)
rc = db->sync(db, flags);
/* XXX DB_INCOMPLETE is returned occaisionally with multiple access. */
_printit = _debug;
rc = cvtdberr(dbi, "db->sync", rc, _printit);
return rc;
}
static int db3cdup(dbiIndex dbi, DBC * dbcursor, DBC ** dbcp,
unsigned int flags)
{
int rc;
if (dbcp) *dbcp = NULL;
rc = dbcursor->c_dup(dbcursor, dbcp, flags);
rc = cvtdberr(dbi, "dbcursor->c_dup", rc, _debug);
/* FIX: *dbcp can be NULL */
return rc;
}
static int db3cclose(dbiIndex dbi, DBC * dbcursor,
unsigned int flags)
{
int rc = -2;
/* XXX db3copen error pathways come through here. */
if (dbcursor != NULL) {
rc = dbcursor->c_close(dbcursor);
rc = cvtdberr(dbi, "dbcursor->c_close", rc, _debug);
}
return rc;
}
static int db3copen(dbiIndex dbi, DB_TXN * txnid,
DBC ** dbcp, unsigned int dbiflags)
{
DB * db = dbi->dbi_db;
DBC * dbcursor = NULL;
int flags;
int rc;
/* XXX DB_WRITECURSOR cannot be used with sunrpc dbenv. */
assert(db != NULL);
if ((dbiflags & DB_WRITECURSOR) &&
(dbi->dbi_eflags & DB_INIT_CDB) && !(dbi->dbi_oflags & DB_RDONLY))
{
flags = DB_WRITECURSOR;
} else
flags = 0;
rc = db->cursor(db, txnid, &dbcursor, flags);
rc = cvtdberr(dbi, "db->cursor", rc, _debug);
if (dbcp)
*dbcp = dbcursor;
else
(void) db3cclose(dbi, dbcursor, 0);
return rc;
}
static int db3cput(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
unsigned int flags)
{
DB * db = dbi->dbi_db;
int rc;
assert(db != NULL);
if (dbcursor == NULL) {
rc = db->put(db, dbi->dbi_txnid, key, data, 0);
rc = cvtdberr(dbi, "db->put", rc, _debug);
} else {
rc = dbcursor->c_put(dbcursor, key, data, DB_KEYLAST);
rc = cvtdberr(dbi, "dbcursor->c_put", rc, _debug);
}
return rc;
}
static int db3cdel(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
unsigned int flags)
{
DB * db = dbi->dbi_db;
int rc;
assert(db != NULL);
if (dbcursor == NULL) {
rc = db->del(db, dbi->dbi_txnid, key, flags);
rc = cvtdberr(dbi, "db->del", rc, _debug);
} else {
int _printit;
/* XXX TODO: insure that cursor is positioned with duplicates */
rc = dbcursor->c_get(dbcursor, key, data, DB_SET);
/* XXX DB_NOTFOUND can be returned */
_printit = (rc == DB_NOTFOUND ? 0 : _debug);
rc = cvtdberr(dbi, "dbcursor->c_get", rc, _printit);
if (rc == 0) {
rc = dbcursor->c_del(dbcursor, flags);
rc = cvtdberr(dbi, "dbcursor->c_del", rc, _debug);
}
}
return rc;
}
static int db3cget(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * data,
unsigned int flags)
{
DB * db = dbi->dbi_db;
int _printit;
int rc;
assert(db != NULL);
if (dbcursor == NULL) {
/* XXX duplicates require cursors. */
rc = db->get(db, dbi->dbi_txnid, key, data, 0);
/* XXX DB_NOTFOUND can be returned */
_printit = (rc == DB_NOTFOUND ? 0 : _debug);
rc = cvtdberr(dbi, "db->get", rc, _printit);
} else {
/* XXX db3 does DB_FIRST on uninitialized cursor */
rc = dbcursor->c_get(dbcursor, key, data, flags);
/* XXX DB_NOTFOUND can be returned */
_printit = (rc == DB_NOTFOUND ? 0 : _debug);
rc = cvtdberr(dbi, "dbcursor->c_get", rc, _printit);
}
return rc;
}
static int db3cpget(dbiIndex dbi, DBC * dbcursor, DBT * key, DBT * pkey,
DBT * data, unsigned int flags)
{
DB * db = dbi->dbi_db;
int _printit;
int rc;
assert(db != NULL);
assert(dbcursor != NULL);
/* XXX db3 does DB_FIRST on uninitialized cursor */
rc = dbcursor->c_pget(dbcursor, key, pkey, data, flags);
/* XXX DB_NOTFOUND can be returned */
_printit = (rc == DB_NOTFOUND ? 0 : _debug);
rc = cvtdberr(dbi, "dbcursor->c_pget", rc, _printit);
return rc;
}
static int db3ccount(dbiIndex dbi, DBC * dbcursor,
unsigned int * countp,
unsigned int flags)
{
db_recno_t count = 0;
int rc = 0;
flags = 0;
rc = dbcursor->c_count(dbcursor, &count, flags);
rc = cvtdberr(dbi, "dbcursor->c_count", rc, _debug);
if (rc) return rc;
if (countp) *countp = count;
return rc;
}
static int db3byteswapped(dbiIndex dbi)
{
DB * db = dbi->dbi_db;
int rc = 0;
if (db != NULL) {
int isswapped = 0;
rc = db->get_byteswapped(db, &isswapped);
if (rc == 0)
rc = isswapped;
}
return rc;
}
static int db3stat(dbiIndex dbi, unsigned int flags)
{
DB * db = dbi->dbi_db;
#if (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
DB_TXN * txnid = NULL;
#endif
int rc = 0;
assert(db != NULL);
#if defined(DB_FAST_STAT)
if (flags)
flags = DB_FAST_STAT;
else
#endif
flags = 0;
dbi->dbi_stats = _free(dbi->dbi_stats);
#if (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
rc = db->stat(db, txnid, &dbi->dbi_stats, flags);
#else
rc = db->stat(db, &dbi->dbi_stats, flags);
#endif
rc = cvtdberr(dbi, "db->stat", rc, _debug);
return rc;
}
static int db3associate(dbiIndex dbi, dbiIndex dbisecondary,
int (*callback)(DB *, const DBT *, const DBT *, DBT *),
unsigned int flags)
{
DB * db = dbi->dbi_db;
DB * secondary = dbisecondary->dbi_db;
int rc;
DB_TXN * txnid = NULL;
assert(db != NULL);
rc = db->associate(db, txnid, secondary, callback, flags);
rc = cvtdberr(dbi, "db->associate", rc, _debug);
return rc;
}
static int db3join(dbiIndex dbi, DBC ** curslist, DBC ** dbcp,
unsigned int flags)
{
DB * db = dbi->dbi_db;
int rc;
assert(db != NULL);
rc = db->join(db, curslist, dbcp, flags);
rc = cvtdberr(dbi, "db->join", rc, _debug);
return rc;
}
static int db3close(dbiIndex dbi, unsigned int flags)
{
rpmdb rpmdb = dbi->dbi_rpmdb;
const char * urlfn = NULL;
const char * root;
const char * home;
const char * dbhome;
const char * dbfile;
const char * dbsubfile;
DB * db = dbi->dbi_db;
int _printit;
int rc = 0, xx;
flags = 0; /* XXX unused */
/*
* Get the prefix/root component and directory path.
*/
root = (dbi->dbi_root ? dbi->dbi_root : rpmdb->db_root);
if ((root[0] == '/' && root[1] == '\0') || rpmdb->db_chrootDone)
root = NULL;
home = (dbi->dbi_home ? dbi->dbi_home : rpmdb->db_home);
/*
* Either the root or directory components may be a URL. Concatenate,
* convert the URL to a path, and add the name of the file.
*/
urlfn = rpmGenPath(root, home, NULL);
(void) urlPath(urlfn, &dbhome);
if (dbi->dbi_temporary) {
dbfile = NULL;
dbsubfile = NULL;
} else {
#ifdef HACK /* XXX necessary to support dbsubfile */
dbfile = (dbi->dbi_file ? dbi->dbi_file : db3basename);
dbsubfile = (dbi->dbi_subfile ? dbi->dbi_subfile : rpmTagGetName(dbi->dbi_rpmtag));
#else
dbfile = (dbi->dbi_file ? dbi->dbi_file : rpmTagGetName(dbi->dbi_rpmtag));
dbsubfile = NULL;
#endif
}
if (db) {
rc = db->close(db, 0);
/* XXX ignore not found error messages. */
_printit = (rc == ENOENT ? 0 : _debug);
rc = cvtdberr(dbi, "db->close", rc, _printit);
db = dbi->dbi_db = NULL;
rpmlog(RPMLOG_DEBUG, _("closed db index %s/%s\n"),
dbhome, (dbfile ? dbfile : rpmTagGetName(dbi->dbi_rpmtag)));
}
if (rpmdb->db_dbenv != NULL && dbi->dbi_use_dbenv) {
if (rpmdb->db_opens == 1) {
xx = db_fini(dbi, (dbhome ? dbhome : ""), dbfile, dbsubfile);
rpmdb->db_dbenv = NULL;
}
rpmdb->db_opens--;
}
if (dbi->dbi_verify_on_close && !dbi->dbi_temporary) {
DB_ENV * dbenv = NULL;
rc = db_env_create(&dbenv, 0);
rc = cvtdberr(dbi, "db_env_create", rc, _debug);
if (rc || dbenv == NULL) goto exit;
dbenv->set_errcall(dbenv, (void *) rpmdb->db_errcall);
dbenv->set_errfile(dbenv, rpmdb->db_errfile);
dbenv->set_errpfx(dbenv, rpmdb->db_errpfx);
/* dbenv->set_paniccall(???) */
#if !(DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3)
xx = dbenv->set_verbose(dbenv, DB_VERB_CHKPOINT,
(dbi->dbi_verbose & DB_VERB_CHKPOINT));
#endif
xx = dbenv->set_verbose(dbenv, DB_VERB_DEADLOCK,
(dbi->dbi_verbose & DB_VERB_DEADLOCK));
xx = dbenv->set_verbose(dbenv, DB_VERB_RECOVERY,
(dbi->dbi_verbose & DB_VERB_RECOVERY));
xx = dbenv->set_verbose(dbenv, DB_VERB_WAITSFOR,
(dbi->dbi_verbose & DB_VERB_WAITSFOR));
if (dbi->dbi_tmpdir) {
const char * tmpdir = rpmGenPath(root, dbi->dbi_tmpdir, NULL);
rc = dbenv->set_tmp_dir(dbenv, tmpdir);
rc = cvtdberr(dbi, "dbenv->set_tmp_dir", rc, _debug);
tmpdir = _free(tmpdir);
if (rc) goto exit;
}
rc = (dbenv->open)(dbenv, dbhome,
DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE | DB_USE_ENVIRON, 0);
rc = cvtdberr(dbi, "dbenv->open", rc, _debug);
if (rc) goto exit;
rc = db_create(&db, dbenv, 0);
rc = cvtdberr(dbi, "db_create", rc, _debug);
if (db != NULL) {
const char * dbf = rpmGetPath(dbhome, "/", dbfile, NULL);
rc = db->verify(db, dbf, NULL, NULL, flags);
rc = cvtdberr(dbi, "db->verify", rc, _debug);
rpmlog(RPMLOG_DEBUG, _("verified db index %s/%s\n"),
(dbhome ? dbhome : ""),
(dbfile ? dbfile : rpmTagGetName(dbi->dbi_rpmtag)));
/*
* The DB handle may not be accessed again after
* DB->verify is called, regardless of its return.
*/
db = NULL;
dbf = _free(dbf);
}
xx = dbenv->close(dbenv, 0);
xx = cvtdberr(dbi, "dbenv->close", xx, _debug);
if (rc == 0 && xx) rc = xx;
}
exit:
dbi->dbi_db = NULL;
urlfn = _free(urlfn);
dbi = db3Free(dbi);
return rc;
}
static int db3open(rpmdb rpmdb, rpmTag rpmtag, dbiIndex * dbip)
{
extern struct _dbiVec db3vec;
const char * urlfn = NULL;
const char * root;
const char * home;
const char * dbhome;
const char * dbfile;
const char * dbsubfile;
dbiIndex dbi = NULL;
int rc = 0;
int xx;
DB * db = NULL;
DB_ENV * dbenv = NULL;
DB_TXN * txnid = NULL;
uint32_t oflags;
int _printit;
if (dbip)
*dbip = NULL;
/*
* Parse db configuration parameters.
*/
if ((dbi = db3New(rpmdb, rpmtag)) == NULL)
return 1;
dbi->dbi_api = DB_VERSION_MAJOR;
/*
* Get the prefix/root component and directory path.
*/
root = (dbi->dbi_root ? dbi->dbi_root : rpmdb->db_root);
if ((root[0] == '/' && root[1] == '\0') || rpmdb->db_chrootDone)
root = NULL;
home = (dbi->dbi_home ? dbi->dbi_home : rpmdb->db_home);
/*
* Either the root or directory components may be a URL. Concatenate,
* convert the URL to a path, and add the name of the file.
*/
urlfn = rpmGenPath(root, home, NULL);
(void) urlPath(urlfn, &dbhome);
if (dbi->dbi_temporary) {
dbfile = NULL;
dbsubfile = NULL;
} else {
#ifdef HACK /* XXX necessary to support dbsubfile */
dbfile = (dbi->dbi_file ? dbi->dbi_file : db3basename);
dbsubfile = (dbi->dbi_subfile ? dbi->dbi_subfile : rpmTagGetName(dbi->dbi_rpmtag));
#else
dbfile = (dbi->dbi_file ? dbi->dbi_file : rpmTagGetName(dbi->dbi_rpmtag));
dbsubfile = NULL;
#endif
}
oflags = (dbi->dbi_oeflags | dbi->dbi_oflags);
oflags &= ~DB_TRUNCATE; /* XXX this is dangerous */
#if 0 /* XXX rpmdb: illegal flag combination specified to DB->open */
if ( dbi->dbi_mode & O_EXCL) oflags |= DB_EXCL;
#endif
/*
* Map open mode flags onto configured database/environment flags.
*/
if (dbi->dbi_temporary) {
oflags |= DB_CREATE;
dbi->dbi_oeflags |= DB_CREATE;
oflags &= ~DB_RDONLY;
dbi->dbi_oflags &= ~DB_RDONLY;
} else {
if (!(dbi->dbi_mode & (O_RDWR|O_WRONLY))) oflags |= DB_RDONLY;
if (dbi->dbi_mode & O_CREAT) {
oflags |= DB_CREATE;
dbi->dbi_oeflags |= DB_CREATE;
}
#ifdef DANGEROUS
if ( dbi->dbi_mode & O_TRUNC) oflags |= DB_TRUNCATE;
#endif
}
/*
* Create the /var/lib/rpm directory if it doesn't exist (root only).
*/
(void) rpmioMkpath(dbhome, 0755, getuid(), getgid());
/*
* Avoid incompatible DB_CREATE/DB_RDONLY flags on DBENV->open.
*/
if (dbi->dbi_use_dbenv) {
if (access(dbhome, W_OK) == -1) {
/* dbhome is unwritable, don't attempt DB_CREATE on DB->open ... */
oflags &= ~DB_CREATE;
/* ... but DBENV->open might still need DB_CREATE ... */
if (dbi->dbi_eflags & DB_PRIVATE) {
dbi->dbi_eflags &= ~DB_JOINENV;
} else {
dbi->dbi_eflags |= DB_JOINENV;
dbi->dbi_oeflags &= ~DB_CREATE;
dbi->dbi_oeflags &= ~DB_THREAD;
/* ... but, unless DB_PRIVATE is used, skip DBENV. */
dbi->dbi_use_dbenv = 0;
}
/* ... DB_RDONLY maps dbhome perms across files ... */
if (dbi->dbi_temporary) {
oflags |= DB_CREATE;
dbi->dbi_oeflags |= DB_CREATE;
oflags &= ~DB_RDONLY;
dbi->dbi_oflags &= ~DB_RDONLY;
} else {
oflags |= DB_RDONLY;
/* ... and DB_WRITECURSOR won't be needed ... */
dbi->dbi_oflags |= DB_RDONLY;
}
} else { /* dbhome is writable, check for persistent dbenv. */
const char * dbf = rpmGetPath(dbhome, "/__db.001", NULL);
if (access(dbf, F_OK) == -1) {
/* ... non-existent (or unwritable) DBENV, will create ... */
dbi->dbi_oeflags |= DB_CREATE;
dbi->dbi_eflags &= ~DB_JOINENV;
} else {
/* ... pre-existent (or bogus) DBENV, will join ... */
if (dbi->dbi_eflags & DB_PRIVATE) {
dbi->dbi_eflags &= ~DB_JOINENV;
} else {
dbi->dbi_eflags |= DB_JOINENV;
dbi->dbi_oeflags &= ~DB_CREATE;
dbi->dbi_oeflags &= ~DB_THREAD;
}
}
dbf = _free(dbf);
}
}
/*
* Avoid incompatible DB_CREATE/DB_RDONLY flags on DB->open.
*/
if ((oflags & DB_CREATE) && (oflags & DB_RDONLY)) {
/* dbhome is writable, and DB->open flags may conflict. */
const char * dbfn = (dbfile ? dbfile : rpmTagGetName(dbi->dbi_rpmtag));
const char * dbf = rpmGetPath(dbhome, "/", dbfn, NULL);
if (access(dbf, F_OK) == -1) {
/* File does not exist, DB->open might create ... */
oflags &= ~DB_RDONLY;
} else {
/* File exists, DB->open need not create ... */
oflags &= ~DB_CREATE;
}
/* Only writers need DB_WRITECURSOR ... */
if (!(oflags & DB_RDONLY) && access(dbf, W_OK) == 0) {
dbi->dbi_oflags &= ~DB_RDONLY;
} else {
dbi->dbi_oflags |= DB_RDONLY;
}
dbf = _free(dbf);
}
/*
* Turn off verify-on-close if opening read-only.
*/
if (oflags & DB_RDONLY)
dbi->dbi_verify_on_close = 0;
if (dbi->dbi_use_dbenv) {
if (rpmdb->db_dbenv == NULL) {
rc = db_init(dbi, dbhome, dbfile, dbsubfile, &dbenv);
if (rc == 0) {
rpmdb->db_dbenv = dbenv;
rpmdb->db_opens = 1;
}
} else {
dbenv = rpmdb->db_dbenv;
rpmdb->db_opens++;
}
}
rpmlog(RPMLOG_DEBUG, _("opening db index %s/%s %s mode=0x%x\n"),
dbhome, (dbfile ? dbfile : rpmTagGetName(dbi->dbi_rpmtag)),
prDbiOpenFlags(oflags, 0), dbi->dbi_mode);
if (rc == 0) {
static int _lockdbfd = 0;
rc = db_create(&db, dbenv, dbi->dbi_cflags);
rc = cvtdberr(dbi, "db_create", rc, _debug);
if (rc == 0 && db != NULL) {
if (rc == 0 &&
rpmdb->db_malloc && rpmdb->db_realloc && rpmdb->db_free)
{
rc = db->set_alloc(db,
rpmdb->db_malloc, rpmdb->db_realloc, rpmdb->db_free);
rc = cvtdberr(dbi, "db->set_alloc", rc, _debug);
}
/* 4.1: db->set_cache_priority(???) */
if (rc == 0 && !dbi->dbi_use_dbenv && dbi->dbi_cachesize) {
rc = db->set_cachesize(db, 0, dbi->dbi_cachesize, 0);
rc = cvtdberr(dbi, "db->set_cachesize", rc, _debug);
}
/* 4.1: db->set_encrypt(???) */
/* 4.1: db->set_errcall(dbenv, rpmdb->db_errcall); */
/* 4.1: db->set_errfile(dbenv, rpmdb->db_errfile); */
/* 4.1: db->set_errpfx(dbenv, rpmdb->db_errpfx); */
/* 4.1: db->set_feedback(???) */
if (rc == 0 && dbi->dbi_lorder) {
rc = db->set_lorder(db, dbi->dbi_lorder);
rc = cvtdberr(dbi, "db->set_lorder", rc, _debug);
}
if (rc == 0 && dbi->dbi_pagesize) {
rc = db->set_pagesize(db, dbi->dbi_pagesize);
rc = cvtdberr(dbi, "db->set_pagesize", rc, _debug);
}
/* 4.1: db->set_paniccall(???) */
if (rc == 0 && oflags & DB_CREATE) {
switch(dbi->dbi_type) {
default:
case DB_HASH:
if (dbi->dbi_h_ffactor) {
rc = db->set_h_ffactor(db, dbi->dbi_h_ffactor);
rc = cvtdberr(dbi, "db->set_h_ffactor", rc, _debug);
if (rc) break;
}
if (dbi->dbi_h_nelem) {
rc = db->set_h_nelem(db, dbi->dbi_h_nelem);
rc = cvtdberr(dbi, "db->set_h_nelem", rc, _debug);
if (rc) break;
}
if (dbi->dbi_h_flags) {
rc = db->set_flags(db, dbi->dbi_h_flags);
rc = cvtdberr(dbi, "db->set_h_flags", rc, _debug);
if (rc) break;
}
if (dbi->dbi_h_hash_fcn) {
rc = db->set_h_hash(db, dbi->dbi_h_hash_fcn);
rc = cvtdberr(dbi, "db->set_h_hash", rc, _debug);
if (rc) break;
}
if (dbi->dbi_h_dup_compare_fcn) {
rc = db->set_dup_compare(db, dbi->dbi_h_dup_compare_fcn);
rc = cvtdberr(dbi, "db->set_dup_compare", rc, _debug);
if (rc) break;
}
break;
case DB_BTREE:
/* 4.1: db->set_append_recno(???) */
if (dbi->dbi_bt_flags) {
rc = db->set_flags(db, dbi->dbi_bt_flags);
rc = cvtdberr(dbi, "db->set_bt_flags", rc, _debug);
if (rc) break;
}
if (dbi->dbi_bt_minkey) {
rc = db->set_bt_minkey(db, dbi->dbi_bt_minkey);
rc = cvtdberr(dbi, "db->set_bt_minkey", rc, _debug);
if (rc) break;
}
if (dbi->dbi_bt_compare_fcn) {
rc = db->set_bt_compare(db, dbi->dbi_bt_compare_fcn);
rc = cvtdberr(dbi, "db->set_bt_compare", rc, _debug);
if (rc) break;
}
if (dbi->dbi_bt_dup_compare_fcn) {
rc = db->set_dup_compare(db, dbi->dbi_bt_dup_compare_fcn);
rc = cvtdberr(dbi, "db->set_dup_compare", rc, _debug);
if (rc) break;
}
if (dbi->dbi_bt_prefix_fcn) {
rc = db->set_bt_prefix(db, dbi->dbi_bt_prefix_fcn);
rc = cvtdberr(dbi, "db->set_bt_prefix", rc, _debug);
if (rc) break;
}
break;
case DB_RECNO:
if (dbi->dbi_re_delim) {
/* 4.1: db->set_append_recno(???) */
rc = db->set_re_delim(db, dbi->dbi_re_delim);
rc = cvtdberr(dbi, "db->set_re_selim", rc, _debug);
if (rc) break;
}
if (dbi->dbi_re_len) {
rc = db->set_re_len(db, dbi->dbi_re_len);
rc = cvtdberr(dbi, "db->set_re_len", rc, _debug);
if (rc) break;
}
if (dbi->dbi_re_pad) {
rc = db->set_re_pad(db, dbi->dbi_re_pad);
rc = cvtdberr(dbi, "db->set_re_pad", rc, _debug);
if (rc) break;
}
if (dbi->dbi_re_source) {
rc = db->set_re_source(db, dbi->dbi_re_source);
rc = cvtdberr(dbi, "db->set_re_source", rc, _debug);
if (rc) break;
}
break;
case DB_QUEUE:
if (dbi->dbi_q_extentsize) {
rc = db->set_q_extentsize(db, dbi->dbi_q_extentsize);
rc = cvtdberr(dbi, "db->set_q_extentsize", rc, _debug);
if (rc) break;
}
break;
}
}
if (rc == 0) {
const char * dbfullpath;
const char * dbpath;
char * t;
int nb;
nb = strlen(dbhome);
if (dbfile) nb += 1 + strlen(dbfile);
dbfullpath = t = alloca(nb + 1);
t = stpcpy(t, dbhome);
if (dbfile)
t = stpcpy( stpcpy( t, "/"), dbfile);
#ifdef HACK /* XXX necessary to support dbsubfile */
dbpath = (!dbi->dbi_use_dbenv && !dbi->dbi_temporary)
? dbfullpath : dbfile;
#else
dbpath = (!dbi->dbi_temporary)
? dbfullpath : dbfile;
#endif
rc = (db->open)(db, txnid, dbpath, dbsubfile,
dbi->dbi_type, oflags, dbi->dbi_perms);
if (rc == 0 && dbi->dbi_type == DB_UNKNOWN) {
DBTYPE dbi_type = DB_UNKNOWN;
xx = db->get_type(db, &dbi_type);
if (xx == 0)
dbi->dbi_type = dbi_type;
}
}
/* XXX return rc == errno without printing */
_printit = (rc > 0 ? 0 : _debug);
xx = cvtdberr(dbi, "db->open", rc, _printit);
dbi->dbi_txnid = NULL;
/*
* Lock a file using fcntl(2). Traditionally this is Packages,
* the file used to store metadata of installed header(s),
* as Packages is always opened, and should be opened first,
* for any rpmdb access.
*
* If no DBENV is used, then access is protected with a
* shared/exclusive locking scheme, as always.
*
* With a DBENV, the fcntl(2) lock is necessary only to keep
* the riff-raff from playing where they don't belong, as
* the DBENV should provide it's own locking scheme. So try to
* acquire a lock, but permit failures, as some other
* DBENV player may already have acquired the lock.
*
* With NPTL posix mutexes, revert to fcntl lock on non-functioning
* glibc/kernel combinations.
*/
if (rc == 0 && dbi->dbi_lockdbfd &&
!((dbi->dbi_ecflags & DB_CLIENT) && dbi->dbi_host) &&
(!dbi->dbi_use_dbenv || _lockdbfd++ == 0))
{
int fdno = -1;
if (!(db->fd(db, &fdno) == 0 && fdno >= 0)) {
rc = 1;
} else {
struct flock l;
memset(&l, 0, sizeof(l));
l.l_whence = 0;
l.l_start = 0;
l.l_len = 0;
l.l_type = (dbi->dbi_mode & (O_RDWR|O_WRONLY))
? F_WRLCK : F_RDLCK;
l.l_pid = 0;
rc = fcntl(fdno, F_SETLK, (void *) &l);
if (rc) {
/* Warning iff using non-private CDB locking. */
rc = ((dbi->dbi_use_dbenv &&
(dbi->dbi_eflags & DB_INIT_CDB) &&
!(dbi->dbi_eflags & DB_PRIVATE))
? 0 : 1);
rpmlog( (rc ? RPMLOG_ERR : RPMLOG_WARNING),
_("cannot get %s lock on %s/%s\n"),
((dbi->dbi_mode & (O_RDWR|O_WRONLY))
? _("exclusive") : _("shared")),
dbhome, (dbfile ? dbfile : ""));
} else if (dbfile) {
rpmlog(RPMLOG_DEBUG,
_("locked db index %s/%s\n"),
dbhome, dbfile);
}
}
}
}
}
dbi->dbi_db = db;
if (rc == 0 && dbi->dbi_db != NULL && dbip != NULL) {
dbi->dbi_vec = &db3vec;
*dbip = dbi;
} else {
dbi->dbi_verify_on_close = 0;
(void) db3close(dbi, 0);
}
urlfn = _free(urlfn);
return rc;
}
/** \ingroup db3
*/
struct _dbiVec db3vec = {
DB_VERSION_MAJOR, DB_VERSION_MINOR, DB_VERSION_PATCH,
db3open, db3close, db3sync, db3associate, db3join,
db3copen, db3cclose, db3cdup, db3cdel, db3cget, db3cpget, db3cput, db3ccount,
db3byteswapped, db3stat
};
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