^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * AppArmor security module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This file contains AppArmor policy manipulation functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 1998-2008 Novell/SUSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright 2009-2010 Canonical Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * AppArmor policy is based around profiles, which contain the rules a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * task is confined by. Every task in the system has a profile attached
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * to it determined either by matching "unconfined" tasks against the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * visible set of profiles or by following a profiles attachment rules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Each profile exists in a profile namespace which is a container of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * visible profiles. Each namespace contains a special "unconfined" profile,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * which doesn't enforce any confinement on a task beyond DAC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * Namespace and profile names can be written together in either
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * of two syntaxes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * :namespace:profile - used by kernel interfaces for easy detection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * namespace://profile - used by policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Profile names can not start with : or @ or ^ and may not contain \0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * Reserved profile names
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * unconfined - special automatically generated unconfined profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * inherit - special name to indicate profile inheritance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * null-XXXX-YYYY - special automatically generated learning profiles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * Namespace names may not start with / or @ and may not contain \0 or :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * Reserved namespace names
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * user-XXXX - user defined profiles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * a // in a profile or namespace name indicates a hierarchical name with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * name before the // being the parent and the name after the child.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Profile and namespace hierarchies serve two different but similar purposes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * The namespace contains the set of visible profiles that are considered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * for attachment. The hierarchy of namespaces allows for virtualizing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * the namespace so that for example a chroot can have its own set of profiles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * which may define some local user namespaces.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * The profile hierarchy severs two distinct purposes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * - it allows for sub profiles or hats, which allows an application to run
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * subprograms under its own profile with different restriction than it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * self, and not have it use the system profile.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * eg. if a mail program starts an editor, the policy might make the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * restrictions tighter on the editor tighter than the mail program,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * and definitely different than general editor restrictions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * - it allows for binary hierarchy of profiles, so that execution history
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * is preserved. This feature isn't exploited by AppArmor reference policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * but is allowed. NOTE: this is currently suboptimal because profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * aliasing is not currently implemented so that a profile for each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * level must be defined.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * eg. /bin/bash///bin/ls as a name would indicate /bin/ls was started
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * from /bin/bash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * A profile or namespace name that can contain one or more // separators
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * is referred to as an hname (hierarchical).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * eg. /bin/bash//bin/ls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * An fqname is a name that may contain both namespace and profile hnames.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * eg. :ns:/bin/bash//bin/ls
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * NOTES:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * - locking of profile lists is currently fairly coarse. All profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * lists within a namespace use the namespace lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * FIXME: move profile lists to using rcu_lists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #include <linux/cred.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #include <linux/rculist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #include <linux/user_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #include "include/apparmor.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #include "include/capability.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #include "include/cred.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #include "include/file.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #include "include/ipc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #include "include/match.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #include "include/path.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #include "include/policy.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #include "include/policy_ns.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #include "include/policy_unpack.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #include "include/resource.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int unprivileged_userns_apparmor_policy = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) const char *const aa_profile_mode_names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) "enforce",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) "complain",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) "kill",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) "unconfined",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * __add_profile - add a profiles to list and label tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * @list: list to add it to (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * @profile: the profile to add (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * refcount @profile, should be put by __list_remove_profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * Requires: namespace lock be held, or list not be shared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static void __add_profile(struct list_head *list, struct aa_profile *profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct aa_label *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) AA_BUG(!list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) AA_BUG(!profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) AA_BUG(!profile->ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) AA_BUG(!mutex_is_locked(&profile->ns->lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) list_add_rcu(&profile->base.list, list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* get list reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) aa_get_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) l = aa_label_insert(&profile->ns->labels, &profile->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) AA_BUG(l != &profile->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) aa_put_label(l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * __list_remove_profile - remove a profile from the list it is on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * @profile: the profile to remove (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * remove a profile from the list, warning generally removal should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * be done with __replace_profile as most profile removals are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * replacements to the unconfined profile.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * put @profile list refcount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * Requires: namespace lock be held, or list not have been live
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static void __list_remove_profile(struct aa_profile *profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) AA_BUG(!profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) AA_BUG(!profile->ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) AA_BUG(!mutex_is_locked(&profile->ns->lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) list_del_rcu(&profile->base.list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) aa_put_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * __remove_profile - remove old profile, and children
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * @profile: profile to be replaced (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * Requires: namespace list lock be held, or list not be shared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static void __remove_profile(struct aa_profile *profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) AA_BUG(!profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) AA_BUG(!profile->ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) AA_BUG(!mutex_is_locked(&profile->ns->lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /* release any children lists first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) __aa_profile_list_release(&profile->base.profiles);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /* released by free_profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) aa_label_remove(&profile->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) __aafs_profile_rmdir(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) __list_remove_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * __aa_profile_list_release - remove all profiles on the list and put refs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * @head: list of profiles (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * Requires: namespace lock be held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) void __aa_profile_list_release(struct list_head *head)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct aa_profile *profile, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) list_for_each_entry_safe(profile, tmp, head, base.list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) __remove_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * aa_free_data - free a data blob
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * @ptr: data to free
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * @arg: unused
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) static void aa_free_data(void *ptr, void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) struct aa_data *data = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) kfree_sensitive(data->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) kfree_sensitive(data->key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) kfree_sensitive(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * aa_free_profile - free a profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * @profile: the profile to free (MAYBE NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * Free a profile, its hats and null_profile. All references to the profile,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * its hats and null_profile must have been put.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * If the profile was referenced from a task context, free_profile() will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * be called from an rcu callback routine, so we must not sleep here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) void aa_free_profile(struct aa_profile *profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct rhashtable *rht;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) AA_DEBUG("%s(%p)\n", __func__, profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (!profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) /* free children profiles */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) aa_policy_destroy(&profile->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) aa_put_profile(rcu_access_pointer(profile->parent));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) aa_put_ns(profile->ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) kfree_sensitive(profile->rename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) aa_free_file_rules(&profile->file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) aa_free_cap_rules(&profile->caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) aa_free_rlimit_rules(&profile->rlimits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) for (i = 0; i < profile->xattr_count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) kfree_sensitive(profile->xattrs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) kfree_sensitive(profile->xattrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) for (i = 0; i < profile->secmark_count; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) kfree_sensitive(profile->secmark[i].label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) kfree_sensitive(profile->secmark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) kfree_sensitive(profile->dirname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) aa_put_dfa(profile->xmatch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) aa_put_dfa(profile->policy.dfa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (profile->data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) rht = profile->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) profile->data = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) rhashtable_free_and_destroy(rht, aa_free_data, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) kfree_sensitive(rht);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) kfree_sensitive(profile->hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) aa_put_loaddata(profile->rawdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) aa_label_destroy(&profile->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) kfree_sensitive(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * aa_alloc_profile - allocate, initialize and return a new profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * @hname: name of the profile (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * @gfp: allocation type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * Returns: refcount profile or NULL on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct aa_profile *aa_alloc_profile(const char *hname, struct aa_proxy *proxy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) gfp_t gfp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct aa_profile *profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /* freed by free_profile - usually through aa_put_profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) profile = kzalloc(sizeof(*profile) + sizeof(struct aa_profile *) * 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (!profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (!aa_policy_init(&profile->base, NULL, hname, gfp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (!aa_label_init(&profile->label, 1, gfp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /* update being set needed by fs interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (!proxy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) proxy = aa_alloc_proxy(&profile->label, gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (!proxy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) aa_get_proxy(proxy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) profile->label.proxy = proxy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) profile->label.hname = profile->base.hname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) profile->label.flags |= FLAG_PROFILE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) profile->label.vec[0] = profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /* refcount released by caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) aa_free_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /* TODO: profile accounting - setup in remove */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * __strn_find_child - find a profile on @head list using substring of @name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * @head: list to search (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * @name: name of profile (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * @len: length of @name substring to match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * Requires: rcu_read_lock be held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * Returns: unrefcounted profile ptr, or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static struct aa_profile *__strn_find_child(struct list_head *head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) const char *name, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return (struct aa_profile *)__policy_strn_find(head, name, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * __find_child - find a profile on @head list with a name matching @name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * @head: list to search (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * @name: name of profile (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * Requires: rcu_read_lock be held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * Returns: unrefcounted profile ptr, or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) static struct aa_profile *__find_child(struct list_head *head, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return __strn_find_child(head, name, strlen(name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * aa_find_child - find a profile by @name in @parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * @parent: profile to search (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * @name: profile name to search for (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) * Returns: a refcounted profile or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) struct aa_profile *aa_find_child(struct aa_profile *parent, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct aa_profile *profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) profile = __find_child(&parent->base.profiles, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) } while (profile && !aa_get_profile_not0(profile));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /* refcount released by caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * __lookup_parent - lookup the parent of a profile of name @hname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * @ns: namespace to lookup profile in (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * @hname: hierarchical profile name to find parent of (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * Lookups up the parent of a fully qualified profile name, the profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * that matches hname does not need to exist, in general this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * is used to load a new profile.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * Requires: rcu_read_lock be held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * Returns: unrefcounted policy or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static struct aa_policy *__lookup_parent(struct aa_ns *ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) const char *hname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct aa_policy *policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct aa_profile *profile = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) char *split;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) policy = &ns->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) for (split = strstr(hname, "//"); split;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) profile = __strn_find_child(&policy->profiles, hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) split - hname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) if (!profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) policy = &profile->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) hname = split + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) split = strstr(hname, "//");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (!profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return &ns->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return &profile->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) * __lookupn_profile - lookup the profile matching @hname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) * @base: base list to start looking up profile name from (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * @hname: hierarchical profile name (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * @n: length of @hname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) * Requires: rcu_read_lock be held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * Returns: unrefcounted profile pointer or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * Do a relative name lookup, recursing through profile tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) static struct aa_profile *__lookupn_profile(struct aa_policy *base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) const char *hname, size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct aa_profile *profile = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) const char *split;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) for (split = strnstr(hname, "//", n); split;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) split = strnstr(hname, "//", n)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) profile = __strn_find_child(&base->profiles, hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) split - hname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (!profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) base = &profile->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) n -= split + 2 - hname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) hname = split + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return __strn_find_child(&base->profiles, hname, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static struct aa_profile *__lookup_profile(struct aa_policy *base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) const char *hname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return __lookupn_profile(base, hname, strlen(hname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) * aa_lookup_profile - find a profile by its full or partial name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) * @ns: the namespace to start from (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * @hname: name to do lookup on. Does not contain namespace prefix (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) * @n: size of @hname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) * Returns: refcounted profile or NULL if not found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct aa_profile *aa_lookupn_profile(struct aa_ns *ns, const char *hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct aa_profile *profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) profile = __lookupn_profile(&ns->base, hname, n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) } while (profile && !aa_get_profile_not0(profile));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* the unconfined profile is not in the regular profile list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) if (!profile && strncmp(hname, "unconfined", n) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) profile = aa_get_newest_profile(ns->unconfined);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) /* refcount released by caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) return profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct aa_profile *aa_lookup_profile(struct aa_ns *ns, const char *hname)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) return aa_lookupn_profile(ns, hname, strlen(hname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) struct aa_profile *aa_fqlookupn_profile(struct aa_label *base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) const char *fqname, size_t n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) struct aa_profile *profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) struct aa_ns *ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) const char *name, *ns_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) size_t ns_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) name = aa_splitn_fqname(fqname, n, &ns_name, &ns_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (ns_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) ns = aa_lookupn_ns(labels_ns(base), ns_name, ns_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (!ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) ns = aa_get_ns(labels_ns(base));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) profile = aa_lookupn_profile(ns, name, n - (name - fqname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) else if (ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /* default profile for ns, currently unconfined */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) profile = aa_get_newest_profile(ns->unconfined);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) profile = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) aa_put_ns(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) return profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * aa_new_null_profile - create or find a null-X learning profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * @parent: profile that caused this profile to be created (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * @hat: true if the null- learning profile is a hat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) * @base: name to base the null profile off of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) * @gfp: type of allocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * Find/Create a null- complain mode profile used in learning mode. The
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * name of the profile is unique and follows the format of parent//null-XXX.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * where XXX is based on the @name or if that fails or is not supplied
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * a unique number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) * null profiles are added to the profile list but the list does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * hold a count on them so that they are automatically released when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) * not in use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * Returns: new refcounted profile else NULL on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) struct aa_profile *aa_new_null_profile(struct aa_profile *parent, bool hat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) const char *base, gfp_t gfp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) struct aa_profile *p, *profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) const char *bname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) char *name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) AA_BUG(!parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) name = kmalloc(strlen(parent->base.hname) + 8 + strlen(base),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) if (name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) sprintf(name, "%s//null-%s", parent->base.hname, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) goto name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) /* fall through to try shorter uniq */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) name = kmalloc(strlen(parent->base.hname) + 2 + 7 + 8, gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) sprintf(name, "%s//null-%x", parent->base.hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) atomic_inc_return(&parent->ns->uniq_null));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) name:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) /* lookup to see if this is a dup creation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) bname = basename(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) profile = aa_find_child(parent, bname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) profile = aa_alloc_profile(name, NULL, gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (!profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) profile->mode = APPARMOR_COMPLAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) profile->label.flags |= FLAG_NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (hat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) profile->label.flags |= FLAG_HAT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) profile->path_flags = parent->path_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) /* released on free_profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) rcu_assign_pointer(profile->parent, aa_get_profile(parent));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) profile->ns = aa_get_ns(parent->ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) profile->file.dfa = aa_get_dfa(nulldfa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) profile->policy.dfa = aa_get_dfa(nulldfa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) mutex_lock_nested(&profile->ns->lock, profile->ns->level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) p = __find_child(&parent->base.profiles, bname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) aa_free_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) profile = aa_get_profile(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) __add_profile(&parent->base.profiles, profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) mutex_unlock(&profile->ns->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) /* refcount released by caller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) kfree(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) aa_free_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) * replacement_allowed - test to see if replacement is allowed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) * @profile: profile to test if it can be replaced (MAYBE NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) * @noreplace: true if replacement shouldn't be allowed but addition is okay
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * @info: Returns - info about why replacement failed (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) * Returns: %0 if replacement allowed else error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) static int replacement_allowed(struct aa_profile *profile, int noreplace,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) const char **info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (profile) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (profile->label.flags & FLAG_IMMUTIBLE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) *info = "cannot replace immutable profile";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) } else if (noreplace) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) *info = "profile already exists";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) /* audit callback for net specific fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) static void audit_cb(struct audit_buffer *ab, void *va)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) struct common_audit_data *sa = va;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (aad(sa)->iface.ns) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) audit_log_format(ab, " ns=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) audit_log_untrustedstring(ab, aad(sa)->iface.ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * audit_policy - Do auditing of policy changes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) * @label: label to check if it can manage policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * @op: policy operation being performed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * @ns_name: name of namespace being manipulated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) * @name: name of profile being manipulated (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) * @info: any extra information to be audited (MAYBE NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * @error: error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * Returns: the error to be returned after audit is done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) static int audit_policy(struct aa_label *label, const char *op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) const char *ns_name, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) const char *info, int error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) DEFINE_AUDIT_DATA(sa, LSM_AUDIT_DATA_NONE, op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) aad(&sa)->iface.ns = ns_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) aad(&sa)->name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) aad(&sa)->info = info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) aad(&sa)->error = error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) aad(&sa)->label = label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) aa_audit_msg(AUDIT_APPARMOR_STATUS, &sa, audit_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) * policy_view_capable - check if viewing policy in at @ns is allowed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) * ns: namespace being viewed by current task (may be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) * Returns: true if viewing policy is allowed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * If @ns is NULL then the namespace being viewed is assumed to be the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) * tasks current namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) bool policy_view_capable(struct aa_ns *ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct user_namespace *user_ns = current_user_ns();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) struct aa_ns *view_ns = aa_get_current_ns();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) bool root_in_user_ns = uid_eq(current_euid(), make_kuid(user_ns, 0)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) in_egroup_p(make_kgid(user_ns, 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) bool response = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) if (!ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) ns = view_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (root_in_user_ns && aa_ns_visible(view_ns, ns, true) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) (user_ns == &init_user_ns ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) (unprivileged_userns_apparmor_policy != 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) user_ns->level == view_ns->level)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) response = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) aa_put_ns(view_ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) return response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) bool policy_admin_capable(struct aa_ns *ns)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) struct user_namespace *user_ns = current_user_ns();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) bool capable = ns_capable(user_ns, CAP_MAC_ADMIN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) AA_DEBUG("cap_mac_admin? %d\n", capable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) AA_DEBUG("policy locked? %d\n", aa_g_lock_policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) return policy_view_capable(ns) && capable && !aa_g_lock_policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) * aa_may_manage_policy - can the current task manage policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) * @label: label to check if it can manage policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) * @op: the policy manipulation operation being done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * Returns: 0 if the task is allowed to manipulate policy else error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) int aa_may_manage_policy(struct aa_label *label, struct aa_ns *ns, u32 mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) const char *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if (mask & AA_MAY_REMOVE_POLICY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) op = OP_PROF_RM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) else if (mask & AA_MAY_REPLACE_POLICY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) op = OP_PROF_REPL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) op = OP_PROF_LOAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) /* check if loading policy is locked out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (aa_g_lock_policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) return audit_policy(label, op, NULL, NULL, "policy_locked",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) -EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (!policy_admin_capable(ns))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) return audit_policy(label, op, NULL, NULL, "not policy admin",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) -EACCES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) /* TODO: add fine grained mediation of policy loads */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) static struct aa_profile *__list_lookup_parent(struct list_head *lh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) struct aa_profile *profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) const char *base = basename(profile->base.hname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) long len = base - profile->base.hname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) struct aa_load_ent *ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) /* parent won't have trailing // so remove from len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (len <= 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) len -= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) list_for_each_entry(ent, lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (ent->new == profile)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) if (strncmp(ent->new->base.hname, profile->base.hname, len) ==
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) 0 && ent->new->base.hname[len] == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) return ent->new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) * __replace_profile - replace @old with @new on a list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) * @old: profile to be replaced (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) * @new: profile to replace @old with (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) * @share_proxy: transfer @old->proxy to @new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) * Will duplicate and refcount elements that @new inherits from @old
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) * and will inherit @old children.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) * refcount @new for list, put @old list refcount
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) * Requires: namespace list lock be held, or list not be shared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) static void __replace_profile(struct aa_profile *old, struct aa_profile *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) struct aa_profile *child, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) if (!list_empty(&old->base.profiles)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) LIST_HEAD(lh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) list_splice_init_rcu(&old->base.profiles, &lh, synchronize_rcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) list_for_each_entry_safe(child, tmp, &lh, base.list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) struct aa_profile *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) list_del_init(&child->base.list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) p = __find_child(&new->base.profiles, child->base.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) if (p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) /* @p replaces @child */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) __replace_profile(child, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) /* inherit @child and its children */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) /* TODO: update hname of inherited children */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) /* list refcount transferred to @new */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) p = aa_deref_parent(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) rcu_assign_pointer(child->parent, aa_get_profile(new));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) list_add_rcu(&child->base.list, &new->base.profiles);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) aa_put_profile(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) if (!rcu_access_pointer(new->parent)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) struct aa_profile *parent = aa_deref_parent(old);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) rcu_assign_pointer(new->parent, aa_get_profile(parent));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) aa_label_replace(&old->label, &new->label);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) /* migrate dents must come after label replacement b/c update */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) __aafs_profile_migrate_dents(old, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) if (list_empty(&new->base.list)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) /* new is not on a list already */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) list_replace_rcu(&old->base.list, &new->base.list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) aa_get_profile(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) aa_put_profile(old);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) __list_remove_profile(old);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) * __lookup_replace - lookup replacement information for a profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) * @ns - namespace the lookup occurs in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) * @hname - name of profile to lookup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) * @noreplace - true if not replacing an existing profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) * @p - Returns: profile to be replaced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) * @info - Returns: info string on why lookup failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) * Returns: profile to replace (no ref) on success else ptr error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) static int __lookup_replace(struct aa_ns *ns, const char *hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) bool noreplace, struct aa_profile **p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) const char **info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) *p = aa_get_profile(__lookup_profile(&ns->base, hname));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) if (*p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) int error = replacement_allowed(*p, noreplace, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) *info = "profile can not be replaced";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static void share_name(struct aa_profile *old, struct aa_profile *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) aa_put_str(new->base.hname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) aa_get_str(old->base.hname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) new->base.hname = old->base.hname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) new->base.name = old->base.name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) new->label.hname = old->label.hname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) /* Update to newest version of parent after previous replacements
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) * Returns: unrefcount newest version of parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static struct aa_profile *update_to_newest_parent(struct aa_profile *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) struct aa_profile *parent, *newest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) parent = rcu_dereference_protected(new->parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) mutex_is_locked(&new->ns->lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) newest = aa_get_newest_profile(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) /* parent replaced in this atomic set? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (newest != parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) aa_put_profile(parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) rcu_assign_pointer(new->parent, newest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) aa_put_profile(newest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) return newest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) * aa_replace_profiles - replace profile(s) on the profile list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) * @policy_ns: namespace load is occurring on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * @label: label that is attempting to load/replace policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) * @mask: permission mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) * @udata: serialized data stream (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) * unpack and replace a profile on the profile list and uses of that profile
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * by any task creds via invalidating the old version of the profile, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * tasks will notice to update their own cred. If the profile does not exist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) * on the profile list it is added.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) * Returns: size of data consumed else error code on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) ssize_t aa_replace_profiles(struct aa_ns *policy_ns, struct aa_label *label,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) u32 mask, struct aa_loaddata *udata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) const char *ns_name = NULL, *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) struct aa_ns *ns = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) struct aa_load_ent *ent, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) struct aa_loaddata *rawdata_ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) const char *op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) ssize_t count, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) LIST_HEAD(lh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) op = mask & AA_MAY_REPLACE_POLICY ? OP_PROF_REPL : OP_PROF_LOAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) aa_get_loaddata(udata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) /* released below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) error = aa_unpack(udata, &lh, &ns_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) /* ensure that profiles are all for the same ns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) * TODO: update locking to remove this constaint. All profiles in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) * the load set must succeed as a set or the load will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) * fail. Sort ent list and take ns locks in hierarchy order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) list_for_each_entry(ent, &lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) if (ns_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) if (ent->ns_name &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) strcmp(ent->ns_name, ns_name) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) info = "policy load has mixed namespaces";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) error = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) } else if (ent->ns_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) info = "policy load has mixed namespaces";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) error = -EACCES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) ns_name = ent->ns_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (ns_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) ns = aa_prepare_ns(policy_ns ? policy_ns : labels_ns(label),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) ns_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) if (IS_ERR(ns)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) op = OP_PROF_LOAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) info = "failed to prepare namespace";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) error = PTR_ERR(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) ns = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) ent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) ns = aa_get_ns(policy_ns ? policy_ns : labels_ns(label));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) mutex_lock_nested(&ns->lock, ns->level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) /* check for duplicate rawdata blobs: space and file dedup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) list_for_each_entry(rawdata_ent, &ns->rawdata_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) if (aa_rawdata_eq(rawdata_ent, udata)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) struct aa_loaddata *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) tmp = __aa_get_loaddata(rawdata_ent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) /* check we didn't fail the race */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) aa_put_loaddata(udata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) udata = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) /* setup parent and ns info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) list_for_each_entry(ent, &lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) struct aa_policy *policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) ent->new->rawdata = aa_get_loaddata(udata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) error = __lookup_replace(ns, ent->new->base.hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) !(mask & AA_MAY_REPLACE_POLICY),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) &ent->old, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) goto fail_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) if (ent->new->rename) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) error = __lookup_replace(ns, ent->new->rename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) !(mask & AA_MAY_REPLACE_POLICY),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) &ent->rename, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) goto fail_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) /* released when @new is freed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) ent->new->ns = aa_get_ns(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) if (ent->old || ent->rename)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) /* no ref on policy only use inside lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) policy = __lookup_parent(ns, ent->new->base.hname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) if (!policy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) struct aa_profile *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) p = __list_lookup_parent(&lh, ent->new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if (!p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) error = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) info = "parent does not exist";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) goto fail_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) rcu_assign_pointer(ent->new->parent, aa_get_profile(p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) } else if (policy != &ns->base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) /* released on profile replacement or free_profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) struct aa_profile *p = (struct aa_profile *) policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) rcu_assign_pointer(ent->new->parent, aa_get_profile(p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) /* create new fs entries for introspection if needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) if (!udata->dents[AAFS_LOADDATA_DIR]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) error = __aa_fs_create_rawdata(ns, udata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) info = "failed to create raw_data dir and files";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) ent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) goto fail_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) list_for_each_entry(ent, &lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) if (!ent->old) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) struct dentry *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) if (rcu_access_pointer(ent->new->parent)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) struct aa_profile *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) p = aa_deref_parent(ent->new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) parent = prof_child_dir(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) parent = ns_subprofs_dir(ent->new->ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) error = __aafs_profile_mkdir(ent->new, parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) info = "failed to create";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) goto fail_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) /* Done with checks that may fail - do actual replacement */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) __aa_bump_ns_revision(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) __aa_loaddata_update(udata, ns->revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) list_for_each_entry_safe(ent, tmp, &lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) list_del_init(&ent->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) op = (!ent->old && !ent->rename) ? OP_PROF_LOAD : OP_PROF_REPL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) if (ent->old && ent->old->rawdata == ent->new->rawdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) /* dedup actual profile replacement */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) audit_policy(label, op, ns_name, ent->new->base.hname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) "same as current profile, skipping",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) /* break refcount cycle with proxy. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) aa_put_proxy(ent->new->label.proxy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) ent->new->label.proxy = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) goto skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * TODO: finer dedup based on profile range in data. Load set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * can differ but profile may remain unchanged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) audit_policy(label, op, ns_name, ent->new->base.hname, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (ent->old) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) share_name(ent->old, ent->new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) __replace_profile(ent->old, ent->new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) struct list_head *lh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) if (rcu_access_pointer(ent->new->parent)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) struct aa_profile *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) parent = update_to_newest_parent(ent->new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) lh = &parent->base.profiles;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) lh = &ns->base.profiles;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) __add_profile(lh, ent->new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) skip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) aa_load_ent_free(ent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) __aa_labelset_update_subtree(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) mutex_unlock(&ns->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) aa_put_ns(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) aa_put_loaddata(udata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) kfree(ns_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) return udata->size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) fail_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) mutex_unlock(&ns->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) /* audit cause of failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) op = (ent && !ent->old) ? OP_PROF_LOAD : OP_PROF_REPL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) audit_policy(label, op, ns_name, ent ? ent->new->base.hname : NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) info, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) /* audit status that rest of profiles in the atomic set failed too */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) info = "valid profile in failed atomic policy load";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) list_for_each_entry(tmp, &lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) if (tmp == ent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) info = "unchecked profile in failed atomic policy load";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) /* skip entry that caused failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) op = (!tmp->old) ? OP_PROF_LOAD : OP_PROF_REPL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) audit_policy(label, op, ns_name, tmp->new->base.hname, info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) list_for_each_entry_safe(ent, tmp, &lh, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) list_del_init(&ent->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) aa_load_ent_free(ent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) * aa_remove_profiles - remove profile(s) from the system
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) * @policy_ns: namespace the remove is being done from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) * @subj: label attempting to remove policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) * @fqname: name of the profile or namespace to remove (NOT NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) * @size: size of the name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) * Remove a profile or sub namespace from the current namespace, so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) * they can not be found anymore and mark them as replaced by unconfined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) * NOTE: removing confinement does not restore rlimits to preconfinement values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) * Returns: size of data consume else error code if fails
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) ssize_t aa_remove_profiles(struct aa_ns *policy_ns, struct aa_label *subj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) char *fqname, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) struct aa_ns *ns = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) struct aa_profile *profile = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) const char *name = fqname, *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) const char *ns_name = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) ssize_t error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) if (*fqname == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) info = "no profile specified";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) error = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (fqname[0] == ':') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) size_t ns_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) name = aa_splitn_fqname(fqname, size, &ns_name, &ns_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) /* released below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) ns = aa_lookupn_ns(policy_ns ? policy_ns : labels_ns(subj),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) ns_name, ns_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) if (!ns) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) info = "namespace does not exist";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) error = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) /* released below */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) ns = aa_get_ns(policy_ns ? policy_ns : labels_ns(subj));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) if (!name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) /* remove namespace - can only happen if fqname[0] == ':' */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) mutex_lock_nested(&ns->parent->lock, ns->level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) __aa_bump_ns_revision(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) __aa_remove_ns(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) mutex_unlock(&ns->parent->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) /* remove profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) mutex_lock_nested(&ns->lock, ns->level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) profile = aa_get_profile(__lookup_profile(&ns->base, name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) if (!profile) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) error = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) info = "profile does not exist";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) goto fail_ns_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) name = profile->base.hname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) __aa_bump_ns_revision(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) __remove_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) __aa_labelset_update_subtree(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) mutex_unlock(&ns->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) /* don't fail removal if audit fails */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) (void) audit_policy(subj, OP_PROF_RM, ns_name, name, info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) aa_put_ns(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) aa_put_profile(profile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) fail_ns_lock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) mutex_unlock(&ns->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) aa_put_ns(ns);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) (void) audit_policy(subj, OP_PROF_RM, ns_name, name, info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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