e2fsck: handle invalid percent expansions in the log filename

Add a missing default: case when expanding percent expansions in the
log file specified in /etc/e2fsck.conf.

Addresses-Coverity-Bug: 1500757
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/e2fsck/logfile.c b/e2fsck/logfile.c
index 7bdeae1..9d79eed 100644 (file)
--- a/e2fsck/logfile.c
+++ b/e2fsck/logfile.c
@@ -155,6 +155,9 @@ static void expand_percent_expression(e2fsck_t ctx, char ch,
        case 'Y':
                sprintf(buf, "%d", tm->tm_year + 1900);
                break;
+       default:
+               sprintf(buf, "%%%c", ch);
+               break;
        }
        append_string(s, buf, 0);
 }