From 5379a3312024a8befe7728238fc50ed05d2938ac Mon Sep 17 00:00:00 2001 From: John Johansen Date: Fri, 9 Jun 2017 17:29:12 -0700 Subject: apparmor: support v7 transition format compatible with label_parse Signed-off-by: John Johansen --- security/apparmor/apparmorfs.c | 2 ++ security/apparmor/policy_unpack.c | 20 +++++++++++++------- 2 files changed, 15 insertions(+), 7 deletions(-) (limited to 'security/apparmor') 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 f42bb9575cb5..6e6f8c1a10a9 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 */ -- cgit v1.2.3