Lines Matching +full:v +full:- +full:pos +full:- +full:supply
1 // SPDX-License-Identifier: GPL-2.0-only
7 * Copyright (C) 1998-2008 Novell/SUSE
8 * Copyright 2009-2010 Canonical Ltd.
82 aa_put_loaddata(private->loaddata);
90 if (size > SIZE_MAX - sizeof(*ret))
91 return ERR_PTR(-EINVAL);
95 return ERR_PTR(-ENOMEM);
102 * mangle_name - mangle a profile name to std profile layout form
121 else if (isalnum(*name) || strchr("._-", *name))
130 strchr("/._-", *name))
137 return t - target;
142 * aafs - core fns and data for the policy tree
152 seq_printf(seq, "%s:[%lu]", AAFS_NAME, d_inode(dentry)->i_ino);
158 if (S_ISLNK(inode->i_mode))
159 kfree(inode->i_link);
177 sb->s_op = &aafs_super_ops;
193 fc->ops = &apparmorfs_context_ops;
205 * __aafs_setup_d_inode - basic inode setup for apparmorfs
219 struct inode *inode = new_inode(dir->i_sb);
225 return -ENOMEM;
227 inode->i_ino = get_next_ino();
228 inode->i_mode = mode;
230 inode->i_private = data;
232 inode->i_op = iops ? iops : &simple_dir_inode_operations;
233 inode->i_fop = &simple_dir_operations;
237 inode->i_op = iops ? iops : &simple_symlink_inode_operations;
238 inode->i_link = link;
240 inode->i_fop = fops;
249 * aafs_create - create a dentry in the apparmorfs filesystem
293 error = -EEXIST;
315 * aafs_create_file - create a file in the apparmorfs filesystem
333 * aafs_create_dir - create a directory in the apparmorfs filesystem
347 * aafs_remove - removes a file or directory from the apparmorfs filesystem
358 dir = d_inode(dentry->d_parent);
374 * aa_fs - policy load/replace/remove
378 * aa_simple_write_to_buffer - common routine for getting policy from user
382 * @pos: position write is at in the file (NOT NULL)
390 loff_t *pos)
396 if (*pos != 0)
397 /* only writes from pos 0, that is complete writes */
398 return ERR_PTR(-ESPIPE);
405 data->size = copy_size;
406 if (copy_from_user(data->data, userbuf, copy_size)) {
408 return ERR_PTR(-EFAULT);
415 loff_t *pos, struct aa_ns *ns)
423 /* high level check about policy management - fine grained in
430 data = aa_simple_write_to_buffer(buf, size, size, pos);
444 loff_t *pos)
446 struct aa_ns *ns = aa_get_ns(f->f_inode->i_private);
447 int error = policy_update(AA_MAY_LOAD_POLICY, buf, size, pos, ns);
461 size_t size, loff_t *pos)
463 struct aa_ns *ns = aa_get_ns(f->f_inode->i_private);
465 buf, size, pos, ns);
478 size_t size, loff_t *pos)
483 struct aa_ns *ns = aa_get_ns(f->f_inode->i_private);
486 /* high level check about policy management - fine grained in
498 data = aa_simple_write_to_buffer(buf, size + 1, size, pos);
502 data->data[size] = 0;
503 error = aa_remove_profiles(ns, label, data->data, size);
525 struct aa_revision *rev = file->private_data;
528 aa_put_ns(rev->ns);
538 struct aa_revision *rev = file->private_data;
543 mutex_lock_nested(&rev->ns->lock, rev->ns->level);
544 last_read = rev->last_read;
545 if (last_read == rev->ns->revision) {
546 mutex_unlock(&rev->ns->lock);
547 if (file->f_flags & O_NONBLOCK)
548 return -EAGAIN;
549 if (wait_event_interruptible(rev->ns->wait,
551 READ_ONCE(rev->ns->revision)))
552 return -ERESTARTSYS;
553 mutex_lock_nested(&rev->ns->lock, rev->ns->level);
556 avail = sprintf(buffer, "%ld\n", rev->ns->revision);
558 rev->last_read = rev->ns->revision;
561 mutex_unlock(&rev->ns->lock);
571 return -ENOMEM;
573 rev->ns = aa_get_ns(inode->i_private);
574 if (!rev->ns)
575 rev->ns = aa_get_current_ns();
576 file->private_data = rev;
583 struct aa_revision *rev = file->private_data;
587 mutex_lock_nested(&rev->ns->lock, rev->ns->level);
588 poll_wait(file, &rev->ns->wait, pt);
589 if (rev->last_read < rev->ns->revision)
591 mutex_unlock(&rev->ns->lock);
599 WRITE_ONCE(ns->revision, READ_ONCE(ns->revision) + 1);
600 wake_up_interruptible(&ns->wait);
615 struct aa_ruleset *rules = profile->label.rules[0];
621 if (rules->file->dfa && *match_str == AA_CLASS_FILE) {
622 state = aa_dfa_match_len(rules->file->dfa,
623 rules->file->start[AA_CLASS_FILE],
624 match_str + 1, match_len - 1);
629 rules->file, state, &cond));
631 } else if (rules->policy->dfa) {
642 state = aa_dfa_match_len(rules->policy->dfa,
643 rules->policy->start[0],
646 tmp = *aa_lookup_perms(rules->policy, state);
654 * query_data - queries a policy and writes its data to buf
665 * retrieve. <LABEL> and <KEY> must not be NUL-terminated.
669 * Returns: number of characters written to buf or -errno on failure
684 return -EINVAL; /* need a query */
688 return -EINVAL; /* not enough space for a non-empty key */
689 if (key + strnlen(key, query + query_len - key) >= query + query_len)
690 return -EINVAL; /* must end with NUL */
693 return -EINVAL; /* not enough space */
714 if (!profile->data)
717 data = rhashtable_lookup_fast(profile->data, &key,
718 profile->data->p);
721 if (out + sizeof(outle32) + data->size > buf +
724 return -EINVAL; /* not enough space */
726 outle32 = __cpu_to_le32(data->size);
729 memcpy(out, data->data, data->size);
730 out += data->size;
736 outle32 = __cpu_to_le32(out - buf - sizeof(bytes));
741 return out - buf;
745 * query_label - queries a label and writes permissions to buf
762 * Returns: number of characters written to buf or -errno on failure
775 return -EINVAL;
780 return -EINVAL;
789 match_len = query_len - label_name_len - 1;
817 * possibly a read(s) which collects the result - which is stored in a
818 * file-local buffer. Once a new write is performed, a new set of results
819 * are stored in the file-local buffer.
827 #define MULTI_TRANSACTION_LIMIT (PAGE_SIZE - sizeof(struct multi_transaction))
841 kref_get(&(t->count));
849 kref_put(&(t->count), multi_transaction_kref);
860 new->size = n;
861 spin_lock(&file->f_lock);
862 old = (struct multi_transaction *) file->private_data;
863 file->private_data = new;
864 spin_unlock(&file->f_lock);
874 if (size > MULTI_TRANSACTION_LIMIT - 1)
875 return ERR_PTR(-EFBIG);
879 return ERR_PTR(-ENOMEM);
880 kref_init(&t->count);
881 if (copy_from_user(t->data, buf, size)) {
883 return ERR_PTR(-EFAULT);
890 size_t size, loff_t *pos)
895 spin_lock(&file->f_lock);
896 t = get_multi_transaction(file->private_data);
897 spin_unlock(&file->f_lock);
902 ret = simple_read_from_buffer(buf, size, pos, t->data, t->size);
910 put_multi_transaction(file->private_data);
925 * aa_write_access - generic permissions and data query
932 * sequence. The only queries currently supported are label-based queries for
943 * Returns: number of bytes written or -errno on failure
952 return -ESPIPE;
959 !memcmp(t->data, QUERY_CMD_PROFILE, QUERY_CMD_PROFILE_LEN)) {
960 len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
961 t->data + QUERY_CMD_PROFILE_LEN,
962 count - QUERY_CMD_PROFILE_LEN, true);
964 !memcmp(t->data, QUERY_CMD_LABEL, QUERY_CMD_LABEL_LEN)) {
965 len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
966 t->data + QUERY_CMD_LABEL_LEN,
967 count - QUERY_CMD_LABEL_LEN, true);
969 !memcmp(t->data, QUERY_CMD_LABELALL,
971 len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
972 t->data + QUERY_CMD_LABELALL_LEN,
973 count - QUERY_CMD_LABELALL_LEN, false);
975 !memcmp(t->data, QUERY_CMD_DATA, QUERY_CMD_DATA_LEN)) {
976 len = query_data(t->data, MULTI_TRANSACTION_LIMIT,
977 t->data + QUERY_CMD_DATA_LEN,
978 count - QUERY_CMD_DATA_LEN);
980 len = -EINVAL;
999 static int aa_sfs_seq_show(struct seq_file *seq, void *v)
1001 struct aa_sfs_entry *fs_file = seq->private;
1006 switch (fs_file->v_type) {
1008 seq_printf(seq, "%s\n", str_yes_no(fs_file->v.boolean));
1011 seq_printf(seq, "%s\n", fs_file->v.string);
1014 seq_printf(seq, "%#08lx\n", fs_file->v.u64);
1026 return single_open(file, aa_sfs_seq_show, inode->i_private);
1059 struct aa_proxy *proxy = aa_get_proxy(inode->i_private);
1063 file->private_data = NULL;
1072 struct seq_file *seq = (struct seq_file *) file->private_data;
1074 aa_put_proxy(seq->private);
1078 static int seq_profile_name_show(struct seq_file *seq, void *v)
1080 struct aa_proxy *proxy = seq->private;
1081 struct aa_label *label = aa_get_label_rcu(&proxy->label);
1083 seq_printf(seq, "%s\n", profile->base.name);
1089 static int seq_profile_mode_show(struct seq_file *seq, void *v)
1091 struct aa_proxy *proxy = seq->private;
1092 struct aa_label *label = aa_get_label_rcu(&proxy->label);
1094 seq_printf(seq, "%s\n", aa_profile_mode_names[profile->mode]);
1100 static int seq_profile_attach_show(struct seq_file *seq, void *v)
1102 struct aa_proxy *proxy = seq->private;
1103 struct aa_label *label = aa_get_label_rcu(&proxy->label);
1105 if (profile->attach.xmatch_str)
1106 seq_printf(seq, "%s\n", profile->attach.xmatch_str);
1107 else if (profile->attach.xmatch->dfa)
1110 seq_printf(seq, "%s\n", profile->base.name);
1116 static int seq_profile_hash_show(struct seq_file *seq, void *v)
1118 struct aa_proxy *proxy = seq->private;
1119 struct aa_label *label = aa_get_label_rcu(&proxy->label);
1123 if (profile->hash) {
1125 seq_printf(seq, "%.2x", profile->hash[i]);
1147 return single_open(file, seq_ns_ ##NAME ##_show, inode->i_private); \
1158 static int seq_ns_stacked_show(struct seq_file *seq, void *v)
1163 seq_printf(seq, "%s\n", str_yes_no(label->size > 1));
1169 static int seq_ns_nsstacked_show(struct seq_file *seq, void *v)
1178 if (label->size > 1) {
1180 if (profile->ns != labels_ns(label)) {
1192 static int seq_ns_level_show(struct seq_file *seq, void *v)
1197 seq_printf(seq, "%d\n", labels_ns(label)->level);
1203 static int seq_ns_name_show(struct seq_file *seq, void *v)
1206 seq_printf(seq, "%s\n", labels_ns(label)->base.name);
1212 static int seq_ns_compress_min_show(struct seq_file *seq, void *v)
1218 static int seq_ns_compress_max_show(struct seq_file *seq, void *v)
1251 struct aa_loaddata *data = __aa_get_loaddata(inode->i_private);
1256 return -ENOENT;
1260 AA_BUG(file->private_data &&
1261 ((struct seq_file *)file->private_data)->private);
1270 struct seq_file *seq = (struct seq_file *) file->private_data;
1273 aa_put_loaddata(seq->private);
1278 static int seq_rawdata_abi_show(struct seq_file *seq, void *v)
1280 struct aa_loaddata *data = seq->private;
1282 seq_printf(seq, "v%d\n", data->abi);
1287 static int seq_rawdata_revision_show(struct seq_file *seq, void *v)
1289 struct aa_loaddata *data = seq->private;
1291 seq_printf(seq, "%ld\n", data->revision);
1296 static int seq_rawdata_hash_show(struct seq_file *seq, void *v)
1298 struct aa_loaddata *data = seq->private;
1301 if (data->hash) {
1303 seq_printf(seq, "%.2x", data->hash[i]);
1310 static int seq_rawdata_compressed_size_show(struct seq_file *seq, void *v)
1312 struct aa_loaddata *data = seq->private;
1314 seq_printf(seq, "%zu\n", data->compressed_size);
1335 ret = -ENOMEM;
1340 ret = -ENOMEM;
1345 ret = -EINVAL;
1354 return -EINVAL;
1362 struct rawdata_f_data *private = file->private_data;
1366 private->loaddata->size);
1371 rawdata_f_data_free(file->private_data);
1383 return -EACCES;
1385 loaddata = __aa_get_loaddata(inode->i_private);
1388 return -ENOENT;
1390 private = rawdata_f_data_alloc(loaddata->size);
1396 private->loaddata = loaddata;
1398 error = decompress_zstd(loaddata->data, loaddata->compressed_size,
1400 loaddata->size);
1404 file->private_data = private;
1428 if (!IS_ERR_OR_NULL(rawdata->dents[i])) {
1430 aafs_remove(rawdata->dents[i]);
1431 rawdata->dents[i] = NULL;
1438 AA_BUG(rawdata->ns && !mutex_is_locked(&rawdata->ns->lock));
1440 if (rawdata->ns) {
1442 list_del_init(&rawdata->list);
1443 aa_put_ns(rawdata->ns);
1444 rawdata->ns = NULL;
1454 AA_BUG(!mutex_is_locked(&ns->lock));
1459 * under ns->lock and if load is successful revision will be
1462 rawdata->name = kasprintf(GFP_KERNEL, "%ld", ns->revision);
1463 if (!rawdata->name)
1464 return -ENOMEM;
1466 dir = aafs_create_dir(rawdata->name, ns_subdata_dir(ns));
1468 /* ->name freed when rawdata freed */
1470 rawdata->dents[AAFS_LOADDATA_DIR] = dir;
1476 rawdata->dents[AAFS_LOADDATA_ABI] = dent;
1482 rawdata->dents[AAFS_LOADDATA_REVISION] = dent;
1489 rawdata->dents[AAFS_LOADDATA_HASH] = dent;
1497 rawdata->dents[AAFS_LOADDATA_COMPRESSED_SIZE] = dent;
1503 rawdata->dents[AAFS_LOADDATA_DATA] = dent;
1504 d_inode(dent)->i_size = rawdata->size;
1506 rawdata->ns = aa_get_ns(ns);
1507 list_add(&rawdata->list, &ns->rawdata_list);
1524 * Requires: @profile->ns->lock held
1534 list_for_each_entry(child, &profile->base.profiles, base.list)
1537 for (i = AAFS_PROF_SIZEOF - 1; i >= 0; --i) {
1539 if (!profile->dents[i])
1542 proxy = d_inode(profile->dents[i])->i_private;
1543 aafs_remove(profile->dents[i]);
1545 profile->dents[i] = NULL;
1551 * Requires: @old->ns->lock held
1560 AA_BUG(!mutex_is_locked(&profiles_ns(old)->lock));
1563 new->dents[i] = old->dents[i];
1564 if (new->dents[i]) {
1565 struct inode *inode = d_inode(new->dents[i]);
1570 old->dents[i] = NULL;
1578 struct aa_proxy *proxy = aa_get_proxy(profile->label.proxy);
1594 for (depth = 0; profile; profile = rcu_access_pointer(profile->parent))
1609 return ERR_PTR(-ENOMEM);
1611 for (; depth > 0; depth--) {
1614 size -= 6;
1620 return ERR_PTR(-ENAMETOOLONG);
1631 struct aa_proxy *proxy = inode->i_private;
1638 return ERR_PTR(-ECHILD);
1640 label = aa_get_label_rcu(&proxy->label);
1643 target = gen_symlink_name(depth, profile->rawdata->name, name);
1688 * Requires: @profile->ns->lock held
1697 AA_BUG(!mutex_is_locked(&profiles_ns(profile)->lock));
1704 error = -ENOENT;
1714 if (!profile->dirname) {
1716 len = mangle_name(profile->base.name, NULL);
1717 id_len = snprintf(NULL, 0, ".%ld", profile->ns->uniq_id);
1719 profile->dirname = kmalloc(len + id_len + 1, GFP_KERNEL);
1720 if (!profile->dirname) {
1721 error = -ENOMEM;
1725 mangle_name(profile->base.name, profile->dirname);
1726 sprintf(profile->dirname + len, ".%ld", profile->ns->uniq_id++);
1729 dent = aafs_create_dir(profile->dirname, parent);
1738 profile->dents[AAFS_PROF_NAME] = dent;
1744 profile->dents[AAFS_PROF_MODE] = dent;
1750 profile->dents[AAFS_PROF_ATTACH] = dent;
1752 if (profile->hash) {
1757 profile->dents[AAFS_PROF_HASH] = dent;
1761 if (profile->rawdata) {
1764 profile->label.proxy, NULL, NULL,
1768 aa_get_proxy(profile->label.proxy);
1769 profile->dents[AAFS_PROF_RAW_HASH] = dent;
1772 profile->label.proxy, NULL, NULL,
1776 aa_get_proxy(profile->label.proxy);
1777 profile->dents[AAFS_PROF_RAW_ABI] = dent;
1780 profile->label.proxy, NULL, NULL,
1784 aa_get_proxy(profile->label.proxy);
1785 profile->dents[AAFS_PROF_RAW_DATA] = dent;
1789 list_for_each_entry(child, &profile->base.profiles, base.list) {
1821 parent = aa_get_ns(dir->i_private);
1829 mutex_lock_nested(&parent->lock, parent->level);
1839 ns = __aa_find_or_create_ns(parent, READ_ONCE(dentry->d_name.name),
1851 mutex_unlock(&parent->lock);
1871 parent = aa_get_ns(dir->i_private);
1877 inode_unlock(dentry->d_inode);
1879 mutex_lock_nested(&parent->lock, parent->level);
1880 ns = aa_get_ns(__aa_findn_ns(&parent->sub_ns, dentry->d_name.name,
1881 dentry->d_name.len));
1883 error = -ENOENT;
1892 mutex_unlock(&parent->lock);
1894 inode_lock(dentry->d_inode);
1910 AA_BUG(!mutex_is_locked(&ns->lock));
1912 list_for_each_entry_safe(ent, tmp, &ns->rawdata_list, list)
1918 * Requires: @ns->lock held
1928 AA_BUG(!mutex_is_locked(&ns->lock));
1930 list_for_each_entry(child, &ns->base.profiles, base.list)
1933 list_for_each_entry(sub, &ns->sub_ns, base.list) {
1934 mutex_lock_nested(&sub->lock, sub->level);
1936 mutex_unlock(&sub->lock);
1942 sub = d_inode(ns_subns_dir(ns))->i_private;
1946 sub = d_inode(ns_subload(ns))->i_private;
1950 sub = d_inode(ns_subreplace(ns))->i_private;
1954 sub = d_inode(ns_subremove(ns))->i_private;
1958 sub = d_inode(ns_subrevision(ns))->i_private;
1962 for (i = AAFS_NS_SIZEOF - 1; i >= 0; --i) {
1963 aafs_remove(ns->dents[i]);
1964 ns->dents[i] = NULL;
2014 /* use create_dentry so we can supply private data */
2026 * Requires: @ns->lock held
2038 AA_BUG(!mutex_is_locked(&ns->lock));
2041 name = ns->base.name;
2056 list_for_each_entry(child, &ns->base.profiles, base.list) {
2063 list_for_each_entry(sub, &ns->sub_ns, base.list) {
2064 mutex_lock_nested(&sub->lock, sub->level);
2066 mutex_unlock(&sub->lock);
2083 * __next_ns - find the next namespace to list
2091 * Requires: ns->parent->lock to be held
2092 * NOTE: will not unlock root->lock
2100 AA_BUG(ns != root && !mutex_is_locked(&ns->parent->lock));
2103 if (!list_empty(&ns->sub_ns)) {
2104 next = list_first_entry(&ns->sub_ns, typeof(*ns), base.list);
2105 mutex_lock_nested(&next->lock, next->level);
2110 parent = ns->parent;
2112 mutex_unlock(&ns->lock);
2114 if (!list_entry_is_head(next, &parent->sub_ns, base.list)) {
2115 mutex_lock_nested(&next->lock, next->level);
2119 parent = parent->parent;
2126 * __first_profile - find the first profile in a namespace
2131 * Requires: profile->ns.lock to be held
2137 AA_BUG(ns && !mutex_is_locked(&ns->lock));
2140 if (!list_empty(&ns->base.profiles))
2141 return list_first_entry(&ns->base.profiles,
2148 * __next_profile - step to the next profile in a profile tree
2154 * Requires: profile->ns.lock to be held
2159 struct aa_ns *ns = p->ns;
2161 AA_BUG(!mutex_is_locked(&profiles_ns(p)->lock));
2164 if (!list_empty(&p->base.profiles))
2165 return list_first_entry(&p->base.profiles, typeof(*p),
2169 parent = rcu_dereference_protected(p->parent,
2170 mutex_is_locked(&p->ns->lock));
2173 if (!list_entry_is_head(p, &parent->base.profiles, base.list))
2176 parent = rcu_dereference_protected(parent->parent,
2177 mutex_is_locked(&parent->ns->lock));
2182 if (!list_entry_is_head(p, &ns->base.profiles, base.list))
2189 * next_profile - step to the next profile in where ever it may be
2203 return __first_profile(root, __next_ns(root, profile->ns));
2207 * p_start - start a depth first traversal of profile tree
2209 * @pos: current position
2213 * acquires first ns->lock
2215 static void *p_start(struct seq_file *f, loff_t *pos)
2219 loff_t l = *pos;
2220 f->private = root;
2223 mutex_lock_nested(&root->lock, root->level);
2227 for (; profile && l > 0; l--)
2234 * p_next - read the next profile entry
2237 * @pos: current position
2243 static void *p_next(struct seq_file *f, void *p, loff_t *pos)
2246 struct aa_ns *ns = f->private;
2247 (*pos)++;
2253 * p_stop - stop depth first traversal
2262 struct aa_ns *root = f->private, *ns;
2265 for (ns = profile->ns; ns && ns != root; ns = ns->parent)
2266 mutex_unlock(&ns->lock);
2268 mutex_unlock(&root->lock);
2273 * seq_show_profile - show a profile entry
2282 struct aa_ns *root = f->private;
2284 aa_label_seq_xprint(f, root, &profile->label,
2301 return -EACCES;
2455 * entry_create_file - create a file entry in the apparmor securityfs
2466 fs_file->dentry = securityfs_create_file(fs_file->name,
2467 S_IFREG | fs_file->mode,
2469 fs_file->file_ops);
2470 if (IS_ERR(fs_file->dentry)) {
2471 error = PTR_ERR(fs_file->dentry);
2472 fs_file->dentry = NULL;
2479 * entry_create_dir - recursively create a directory entry in the securityfs
2492 dir = securityfs_create_dir(fs_dir->name, parent);
2495 fs_dir->dentry = dir;
2497 for (fs_file = fs_dir->v.files; fs_file && fs_file->name; ++fs_file) {
2498 if (fs_file->v_type == AA_SFS_TYPE_DIR)
2499 error = entry_create_dir(fs_file, fs_dir->dentry);
2501 error = entry_create_file(fs_file, fs_dir->dentry);
2515 * entry_remove_file - drop a single file entry in the apparmor securityfs
2520 if (!fs_file->dentry)
2523 securityfs_remove(fs_file->dentry);
2524 fs_file->dentry = NULL;
2528 * entry_remove_dir - recursively drop a directory entry from the securityfs
2535 for (fs_file = fs_dir->v.files; fs_file && fs_file->name; ++fs_file) {
2536 if (fs_file->v_type == AA_SFS_TYPE_DIR)
2546 * aa_destroy_aafs - cleanup and free aafs
2565 int error = simple_pin_fs(parent->d_sb->s_type, &mount, &count);
2576 inode = new_inode(parent->d_inode->i_sb);
2578 error = -ENOMEM;
2582 inode->i_ino = get_next_ino();
2583 inode->i_mode = S_IFCHR | S_IRUGO | S_IWUGO;
2612 return ERR_PTR(-ECHILD);
2630 d_inode(dentry)->i_ino);
2634 res = -ENOENT;
2646 * aa_create_aafs - create the apparmor security filesystem
2662 return -EEXIST;
2669 aafs_mnt->mnt_sb->s_flags &= ~SB_NOUSER;
2701 mutex_lock_nested(&root_ns->lock, root_ns->level);
2702 error = __aafs_ns_mkdir(root_ns, aafs_mnt->mnt_root, ".policy",
2703 aafs_mnt->mnt_root);
2704 mutex_unlock(&root_ns->lock);