dovecot-2.1: lib-storage: When index mkdir() fails with EPERM, c...

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.1/rev/3ce50c0bb782
changeset: 14745:3ce50c0bb782
user:      Timo Sirainen <tss at iki.fi>
date:      Tue Oct 02 23:24:10 2012 +0300
description:
lib-storage: When index mkdir() fails with EPERM, create the dir anyway with 0700 mode.
This avoids failing entirely when /var/mail/user has 0660 permissions and we
don't have access to the group. The error message is still logged.

diffstat:

 src/lib-storage/mailbox-list.c |  9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diffs (19 lines):

diff -r e29b627219b3 -r 3ce50c0bb782 src/lib-storage/mailbox-list.c
--- a/src/lib-storage/mailbox-list.c	Tue Oct 02 23:12:07 2012 +0300
+++ b/src/lib-storage/mailbox-list.c	Tue Oct 02 23:24:10 2012 +0300
@@ -1461,7 +1461,14 @@
 		if (errno != ENOENT || p == NULL || ++n == 2) {
 			mailbox_list_set_critical(list,
 				"mkdir(%s) failed: %m", index_dir);
-			return -1;
+			if (p == NULL || errno != EPERM ||
+			    perm.dir_create_mode == 0700)
+				return -1;
+			/* we can't use the GID. allow it anyway with more
+			   restricted permissions. */
+			perm.file_create_gid = (gid_t)-1;
+			perm.dir_create_mode = 0700;
+			continue;
 		}
 		/* create the parent directory first */
 		parent_dir = t_strdup_until(index_dir, p);