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statedb: Check db integrity and only overwrite the old on success.

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Klaas Freitag 2013-07-04 11:11:40 +02:00 committed by Andreas Schneider
parent 64925efe18
commit cb65273ef9
1 changed files with 29 additions and 7 deletions
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36
src/csync_statedb.c
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@ -240,6 +240,7 @@ int csync_statedb_write(CSYNC *ctx, sqlite3 *db)
int csync_statedb_close(const char *statedb, sqlite3 *db, int jwritten) {
char *statedb_tmp = NULL;
int rc = 0;
mbchar_t *mb_statedb = NULL;
/* close the temporary database */
sqlite3_close(db);
@ -248,14 +249,35 @@ int csync_statedb_close(const char *statedb, sqlite3 *db, int jwritten) {
return -1;
}
/* if we successfully synchronized, overwrite the original statedb */
/* If we successfully synchronized, overwrite the original statedb */
/*
* Check the integrity of the tmp db. If ok, overwrite the old database with
* the tmp db.
*/
if (jwritten) {
rc = c_copy(statedb_tmp, statedb, 0644);
if (rc == 0) {
unlink(statedb_tmp);
}
} else {
unlink(statedb_tmp);
if (_csync_statedb_check(ctx, statedb_tmp) == 0) {
/* New statedb is valid. */
mb_statedb = c_utf8_to_locale(statedb);
/* Move the tmp-db to the real one. */
if (c_rename(statedb_tmp, statedb) < 0) {
CSYNC_LOG(CSYNC_LOG_PRIORITY_DEBUG,
"Renaming tmp db to original db failed.");
rc = -1;
} else {
CSYNC_LOG(CSYNC_LOG_PRIORITY_DEBUG,
"Successfully moved tmp db to original db.");
}
} else {
mb_statedb = c_utf8_to_locale(statedb_tmp);
_tunlink(mb_statedb);
/* new statedb_tmp is not integer. */
CSYNC_LOG(CSYNC_LOG_PRIORITY_ERROR, " ## csync tmp statedb corrupt. Original one is not replaced. ");
rc = -1;
}
c_free_locale_string(mb_statedb);
}
SAFE_FREE(statedb_tmp);