[SCM] Samba Shared Repository - branch master updated - release-4-0-0alpha7-802-g6edaf61

Michael Adam obnox at samba.org
Wed Apr 1 10:36:05 GMT 2009


The branch, master has been updated
       via  6edaf6188c8c27e319357aba920725c5c0af815e (commit)
      from  1e92ddd40523f053513f9d12611e5a70c8a425f0 (commit)

http://gitweb.samba.org/?p=samba.git;a=shortlog;h=master


- Log -----------------------------------------------------------------
commit 6edaf6188c8c27e319357aba920725c5c0af815e
Author: Michael Adam <obnox at samba.org>
Date:   Wed Apr 1 12:23:07 2009 +0200

    s3: fix the fix for bug #6195 - dont let smbd child processes panic
    
    This patch makes sure the original and temporary TDBs are closed
    _before_ the rename. Originally, the open TDB was renamed, and so
    the name passdb.tdb.tmp stayed around in the db context. Hence
    upon client connect, the smbd children died because reinit_after_fork()
    calling tdb_reopen_all() would try to reopen passdb.tdb.tmp which
    existed no longer...
    
    Michael

-----------------------------------------------------------------------

Summary of changes:
 source3/passdb/pdb_tdb.c |   18 ++++++++++++++++--
 1 files changed, 16 insertions(+), 2 deletions(-)


Changeset truncated at 500 lines:

diff --git a/source3/passdb/pdb_tdb.c b/source3/passdb/pdb_tdb.c
index 1060733..6c49eb1 100644
--- a/source3/passdb/pdb_tdb.c
+++ b/source3/passdb/pdb_tdb.c
@@ -250,6 +250,11 @@ static bool tdbsam_convert_backup(const char *dbname, struct db_context **pp_db)
 		smb_panic("tdbsam_convert_backup: orig commit failed\n");
 	}
 
+	/* be sure to close the DBs _before_ renaming the file */
+
+	TALLOC_FREE(orig_db);
+	TALLOC_FREE(tmp_db);
+
 	/* This is safe from other users as we know we're
  	 * under a mutex here. */
 
@@ -262,13 +267,22 @@ static bool tdbsam_convert_backup(const char *dbname, struct db_context **pp_db)
 	}
 
 	TALLOC_FREE(frame);
-	TALLOC_FREE(orig_db);
+
+	/* re-open the converted TDB */
+
+	orig_db = db_open(NULL, dbname, 0,
+			  TDB_DEFAULT, O_CREAT|O_RDWR, 0600);
+	if (orig_db == NULL) {
+		DEBUG(0, ("tdbsam_convert_backup: Failed to re-open "
+			  "converted passdb TDB [%s]\n", dbname));
+		return false;
+	}
 
 	DEBUG(1, ("tdbsam_convert_backup: updated %s file.\n",
 		dbname ));
 
 	/* Replace the global db pointer. */
-	*pp_db = tmp_db;
+	*pp_db = orig_db;
 	return true;
 
   cancel:


-- 
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