From 1b90c295d8cdcc73da028b88a328b1a1fc572389 Mon Sep 17 00:00:00 2001
From: John Johansen <john.johansen@canonical.com>
Date: Fri, 9 Jun 2017 17:29:12 -0700
Subject: [PATCH 58/65] apparmor: support v7 transition format compatible with
label_parse
Git-commit: 5379a3312024a8befe7728238fc50ed05d2938ac
Patch-mainline: v4.13-rc1
References: FATE#323500
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
---
security/apparmor/apparmorfs.c | 2 ++
security/apparmor/policy_unpack.c | 20 +++++++++++++-------
2 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index d1a6ce499776..e460f2d8337d 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -2103,6 +2103,8 @@ static struct aa_sfs_entry aa_sfs_entry_domain[] = {
static struct aa_sfs_entry aa_sfs_entry_versions[] = {
AA_SFS_FILE_BOOLEAN("v5", 1),
+ AA_SFS_FILE_BOOLEAN("v6", 1),
+ AA_SFS_FILE_BOOLEAN("v7", 1),
{ }
};
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index c010f8b56e1f..c600f4dd1783 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -466,7 +466,7 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
profile->file.trans.size = size;
for (i = 0; i < size; i++) {
char *str;
- int c, j, size2 = unpack_strdup(e, &str, NULL);
+ int c, j, pos, size2 = unpack_strdup(e, &str, NULL);
/* unpack_strdup verifies that the last character is
* null termination byte.
*/
@@ -478,19 +478,25 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
goto fail;
/* count internal # of internal \0 */
- for (c = j = 0; j < size2 - 2; j++) {
- if (!str[j])
+ for (c = j = 0; j < size2 - 1; j++) {
+ if (!str[j]) {
+ pos = j;
c++;
+ }
}
if (*str == ':') {
+ /* first character after : must be valid */
+ if (!str[1])
+ goto fail;
/* beginning with : requires an embedded \0,
* verify that exactly 1 internal \0 exists
* trailing \0 already verified by unpack_strdup
+ *
+ * convert \0 back to : for label_parse
*/
- if (c != 1)
- goto fail;
- /* first character after : must be valid */
- if (!str[1])
+ if (c == 1)
+ str[pos] = ':';
+ else if (c > 1)
goto fail;
} else if (c)
/* fail - all other cases with embedded \0 */
--
2.12.3