dovecot-2.2: sdbox: Fixed race condition when two processes mkdi...

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/3e9fda96a205
changeset: 17896:3e9fda96a205
user:      Timo Sirainen <tss at iki.fi>
date:      Mon Oct 06 21:15:31 2014 +0300
description:
sdbox: Fixed race condition when two processes mkdir() the same directory

diffstat:

 src/lib-storage/index/dbox-single/sdbox-file.c |  3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diffs (13 lines):

diff -r 1b66c30fd421 -r 3e9fda96a205 src/lib-storage/index/dbox-single/sdbox-file.c
--- a/src/lib-storage/index/dbox-single/sdbox-file.c	Mon Oct 06 20:17:19 2014 +0300
+++ b/src/lib-storage/index/dbox-single/sdbox-file.c	Mon Oct 06 21:15:31 2014 +0300
@@ -255,7 +255,8 @@
 		dir = t_strdup_until(path, p);
 		if (mkdir_parents_chgrp(dir, perm->dir_create_mode,
 					perm->file_create_gid,
-					perm->file_create_gid_origin) < 0) {
+					perm->file_create_gid_origin) < 0 &&
+		   errno != EEXIST) {
 			mail_storage_set_critical(box->storage,
 				"mkdir_parents(%s) failed: %m", dir);
 			return -1;