TOMOYO: Accept \000 as a valid character.

TOMOYO 2.5 in Linux 3.2 and later handles Unix domain socket's address.
Thus, tomoyo_correct_word2() needs to accept \000 as a valid character, or
TOMOYO 2.5 cannot handle Unix domain's abstract socket address.

Reported-by: Steven Allen <steven@stebalien.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
CC: stable@vger.kernel.org [3.2+]
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/security/tomoyo/util.c b/security/tomoyo/util.c
index 4a9b4b2eb755..867558c98334 100644
--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -492,13 +492,13 @@ static bool tomoyo_correct_word2(const char *string, size_t len)
                                 if (d < '0' || d > '7' || e < '0' || e > '7')
                                         break;
                                 c = tomoyo_make_byte(c, d, e);
-                                if (tomoyo_invalid(c))
-                                        continue; /* pattern is not \000 */
+                                if (c <= ' ' || c >= 127)
+                                        continue;
                         }
                         goto out;
                 } else if (in_repetition && c == '/') {
                         goto out;
-                } else if (tomoyo_invalid(c)) {
+                } else if (c <= ' ' || c >= 127) {
                         goto out;
                 }
         }