policy_unpack.c (2410aa96d6b4930ed25fd02c3d173f14b962e0f4) policy_unpack.c (651e28c5537abb39076d3949fb7618536f1d242e)
1/*
2 * AppArmor security module
3 *
4 * This file contains AppArmor functions for unpacking policy loaded from
5 * userspace.
6 *
7 * Copyright (C) 1998-2008 Novell/SUSE
8 * Copyright 2009-2010 Canonical Ltd.

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270 if (unpack_X(e, code))
271 return 1;
272
273fail:
274 e->pos = pos;
275 return 0;
276}
277
1/*
2 * AppArmor security module
3 *
4 * This file contains AppArmor functions for unpacking policy loaded from
5 * userspace.
6 *
7 * Copyright (C) 1998-2008 Novell/SUSE
8 * Copyright 2009-2010 Canonical Ltd.

--- 261 unchanged lines hidden (view full) ---

270 if (unpack_X(e, code))
271 return 1;
272
273fail:
274 e->pos = pos;
275 return 0;
276}
277
278static bool unpack_u16(struct aa_ext *e, u16 *data, const char *name)
279{
280 if (unpack_nameX(e, AA_U16, name)) {
281 if (!inbounds(e, sizeof(u16)))
282 return 0;
283 if (data)
284 *data = le16_to_cpu(get_unaligned((__le16 *) e->pos));
285 e->pos += sizeof(u16);
286 return 1;
287 }
288 return 0;
289}
290
278static bool unpack_u32(struct aa_ext *e, u32 *data, const char *name)
279{
280 if (unpack_nameX(e, AA_U32, name)) {
281 if (!inbounds(e, sizeof(u32)))
282 return 0;
283 if (data)
284 *data = le32_to_cpu(get_unaligned((__le32 *) e->pos));
285 e->pos += sizeof(u32);

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579 *
580 * NOTE: unpack profile sets audit struct if there is a failure
581 */
582static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
583{
584 struct aa_profile *profile = NULL;
585 const char *tmpname, *tmpns = NULL, *name = NULL;
586 const char *info = "failed to unpack profile";
291static bool unpack_u32(struct aa_ext *e, u32 *data, const char *name)
292{
293 if (unpack_nameX(e, AA_U32, name)) {
294 if (!inbounds(e, sizeof(u32)))
295 return 0;
296 if (data)
297 *data = le32_to_cpu(get_unaligned((__le32 *) e->pos));
298 e->pos += sizeof(u32);

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592 *
593 * NOTE: unpack profile sets audit struct if there is a failure
594 */
595static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
596{
597 struct aa_profile *profile = NULL;
598 const char *tmpname, *tmpns = NULL, *name = NULL;
599 const char *info = "failed to unpack profile";
587 size_t ns_len;
600 size_t size = 0, ns_len;
588 struct rhashtable_params params = { 0 };
589 char *key = NULL;
590 struct aa_data *data;
591 int i, error = -EPROTO;
592 kernel_cap_t tmpcap;
593 u32 tmp;
594
595 *ns_name = NULL;

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712 goto fail;
713 }
714
715 if (!unpack_rlimits(e, profile)) {
716 info = "failed to unpack profile rlimits";
717 goto fail;
718 }
719
601 struct rhashtable_params params = { 0 };
602 char *key = NULL;
603 struct aa_data *data;
604 int i, error = -EPROTO;
605 kernel_cap_t tmpcap;
606 u32 tmp;
607
608 *ns_name = NULL;

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725 goto fail;
726 }
727
728 if (!unpack_rlimits(e, profile)) {
729 info = "failed to unpack profile rlimits";
730 goto fail;
731 }
732
733 size = unpack_array(e, "net_allowed_af");
734 if (size) {
735
736 for (i = 0; i < size; i++) {
737 /* discard extraneous rules that this kernel will
738 * never request
739 */
740 if (i >= AF_MAX) {
741 u16 tmp;
742
743 if (!unpack_u16(e, &tmp, NULL) ||
744 !unpack_u16(e, &tmp, NULL) ||
745 !unpack_u16(e, &tmp, NULL))
746 goto fail;
747 continue;
748 }
749 if (!unpack_u16(e, &profile->net.allow[i], NULL))
750 goto fail;
751 if (!unpack_u16(e, &profile->net.audit[i], NULL))
752 goto fail;
753 if (!unpack_u16(e, &profile->net.quiet[i], NULL))
754 goto fail;
755 }
756 if (!unpack_nameX(e, AA_ARRAYEND, NULL))
757 goto fail;
758 }
759 if (VERSION_LT(e->version, v7)) {
760 /* pre v7 policy always allowed these */
761 profile->net.allow[AF_UNIX] = 0xffff;
762 profile->net.allow[AF_NETLINK] = 0xffff;
763 }
764
720 if (unpack_nameX(e, AA_STRUCT, "policydb")) {
721 /* generic policy dfa - optional and may be NULL */
722 info = "failed to unpack policydb";
723 profile->policy.dfa = unpack_dfa(e);
724 if (IS_ERR(profile->policy.dfa)) {
725 error = PTR_ERR(profile->policy.dfa);
726 profile->policy.dfa = NULL;
727 goto fail;

--- 296 unchanged lines hidden --- 		765 if (unpack_nameX(e, AA_STRUCT, "policydb")) {
766 /* generic policy dfa - optional and may be NULL */
767 info = "failed to unpack policydb";
768 profile->policy.dfa = unpack_dfa(e);
769 if (IS_ERR(profile->policy.dfa)) {
770 error = PTR_ERR(profile->policy.dfa);
771 profile->policy.dfa = NULL;
772 goto fail;

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