From: Timo Sirainen <tss@iki.fi>
Date: Sun, 14 Aug 2011 22:11:47 +0000 (+0300)
Subject: lib-storage: Fixed mail_storage_copy_can_use_hardlink() for mode=0600 with different... 
X-Git-Tag: 2.1.alpha1~99
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8eb118a6614e7faebb3564d09b8b86ea98fd8ae1;p=thirdparty%2Fdovecot%2Fcore.git

lib-storage: Fixed mail_storage_copy_can_use_hardlink() for mode=0600 with different uids.
---

diff --git a/src/lib-storage/mail-copy.c b/src/lib-storage/mail-copy.c
index 1f97fddc63..1c66543db0 100644
--- a/src/lib-storage/mail-copy.c
+++ b/src/lib-storage/mail-copy.c
@@ -83,6 +83,13 @@ bool mail_storage_copy_can_use_hardlink(struct mailbox *src,
 	const struct mailbox_permissions *dest_perm =
 		mailbox_get_permissions(dest);
 
+	if (src_perm->file_uid != dest_perm->file_uid) {
+		/* if we don't have read permissions, we can't hard link
+		   (basically we'll catch 0600 files here) */
+		if ((src_perm->file_create_mode & 0022) == 0)
+			return FALSE;
+	}
+
 	return src_perm->file_create_mode == dest_perm->file_create_mode &&
 		src_perm->file_create_gid == dest_perm->file_create_gid &&
 		!dest->disable_reflink_copy_to;