apparmor: update query interface to support label queries
Signed-off-by: John Johansen <john.johansen@canonical.com>
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@ -33,6 +33,7 @@
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#include "include/context.h"
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#include "include/crypto.h"
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#include "include/policy_ns.h"
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#include "include/label.h"
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#include "include/policy.h"
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#include "include/policy_ns.h"
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#include "include/resource.h"
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@ -629,6 +630,7 @@ static void profile_query_cb(struct aa_profile *profile, struct aa_perms *perms,
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tmp = nullperms;
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}
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aa_apply_modes_to_perms(profile, &tmp);
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aa_perms_accum_raw(perms, &tmp);
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}
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@ -655,7 +657,9 @@ static ssize_t query_data(char *buf, size_t buf_len,
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{
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char *out;
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const char *key;
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struct label_it i;
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struct aa_label *label, *curr;
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struct aa_profile *profile;
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struct aa_data *data;
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u32 bytes, blocks;
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__le32 outle32;
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@ -690,13 +694,16 @@ static ssize_t query_data(char *buf, size_t buf_len,
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out = buf + sizeof(bytes) + sizeof(blocks);
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blocks = 0;
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if (labels_profile(label)->data) {
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data = rhashtable_lookup_fast(labels_profile(label)->data, &key,
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labels_profile(label)->data->p);
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label_for_each_confined(i, label, profile) {
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if (!profile->data)
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continue;
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data = rhashtable_lookup_fast(profile->data, &key,
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profile->data->p);
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if (data) {
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if (out + sizeof(outle32) + data->size >
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buf + buf_len) {
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if (out + sizeof(outle32) + data->size > buf +
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buf_len) {
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aa_put_label(label);
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return -EINVAL; /* not enough space */
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}
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@ -741,10 +748,12 @@ static ssize_t query_data(char *buf, size_t buf_len,
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static ssize_t query_label(char *buf, size_t buf_len,
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char *query, size_t query_len, bool view_only)
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{
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struct aa_profile *profile;
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struct aa_label *label, *curr;
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char *label_name, *match_str;
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size_t label_name_len, match_len;
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struct aa_perms perms;
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struct label_it i;
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if (!query_len)
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return -EINVAL;
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@ -770,7 +779,16 @@ static ssize_t query_label(char *buf, size_t buf_len,
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return PTR_ERR(label);
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perms = allperms;
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profile_query_cb(labels_profile(label), &perms, match_str, match_len);
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if (view_only) {
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label_for_each_in_ns(i, labels_ns(label), label, profile) {
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profile_query_cb(profile, &perms, match_str, match_len);
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}
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} else {
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label_for_each(i, label, profile) {
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profile_query_cb(profile, &perms, match_str, match_len);
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}
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}
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aa_put_label(label);
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return scnprintf(buf, buf_len,
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"allow 0x%08x\ndeny 0x%08x\naudit 0x%08x\nquiet 0x%08x\n",
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@ -877,9 +895,12 @@ static int multi_transaction_release(struct inode *inode, struct file *file)
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return 0;
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}
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#define QUERY_CMD_LABEL "label\0"
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#define QUERY_CMD_LABEL_LEN 6
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#define QUERY_CMD_PROFILE "profile\0"
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#define QUERY_CMD_PROFILE_LEN 8
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#define QUERY_CMD_LABELALL "labelall\0"
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#define QUERY_CMD_LABELALL_LEN 9
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#define QUERY_CMD_DATA "data\0"
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#define QUERY_CMD_DATA_LEN 5
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@ -922,6 +943,17 @@ static ssize_t aa_write_access(struct file *file, const char __user *ubuf,
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len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
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t->data + QUERY_CMD_PROFILE_LEN,
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count - QUERY_CMD_PROFILE_LEN, true);
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} else if (count > QUERY_CMD_LABEL_LEN &&
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!memcmp(t->data, QUERY_CMD_LABEL, QUERY_CMD_LABEL_LEN)) {
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len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
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t->data + QUERY_CMD_LABEL_LEN,
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count - QUERY_CMD_LABEL_LEN, true);
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} else if (count > QUERY_CMD_LABELALL_LEN &&
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!memcmp(t->data, QUERY_CMD_LABELALL,
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QUERY_CMD_LABELALL_LEN)) {
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len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
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t->data + QUERY_CMD_LABELALL_LEN,
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count - QUERY_CMD_LABELALL_LEN, false);
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} else if (count > QUERY_CMD_DATA_LEN &&
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!memcmp(t->data, QUERY_CMD_DATA, QUERY_CMD_DATA_LEN)) {
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len = query_data(t->data, MULTI_TRANSACTION_LIMIT,
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