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authorJohn Johansen <john.johansen@canonical.com>2017-06-09 23:55:38 +0300
committerJohn Johansen <john.johansen@canonical.com>2017-06-11 03:11:39 +0300
commit317d9a054e1c6d5f18b02b99ce09911942f8e603 (patch)
tree3d6e19facb59bffadb4c7407920a2543c0c3777e /security/apparmor
parent76a1d263aba3c97db7a2ba673059e0f17d983efb (diff)
downloadlinux-317d9a054e1c6d5f18b02b99ce09911942f8e603.tar.xz
apparmor: update query interface to support label queries
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security/apparmor')
-rw-r--r--security/apparmor/apparmorfs.c46
1 files changed, 39 insertions, 7 deletions
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index 976af6da45c3..d24100f8fd98 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -33,6 +33,7 @@
#include "include/context.h"
#include "include/crypto.h"
#include "include/policy_ns.h"
+#include "include/label.h"
#include "include/policy.h"
#include "include/policy_ns.h"
#include "include/resource.h"
@@ -629,6 +630,7 @@ static void profile_query_cb(struct aa_profile *profile, struct aa_perms *perms,
tmp = nullperms;
}
aa_apply_modes_to_perms(profile, &tmp);
+ aa_perms_accum_raw(perms, &tmp);
}
@@ -655,7 +657,9 @@ static ssize_t query_data(char *buf, size_t buf_len,
{
char *out;
const char *key;
+ struct label_it i;
struct aa_label *label, *curr;
+ struct aa_profile *profile;
struct aa_data *data;
u32 bytes, blocks;
__le32 outle32;
@@ -690,13 +694,16 @@ static ssize_t query_data(char *buf, size_t buf_len,
out = buf + sizeof(bytes) + sizeof(blocks);
blocks = 0;
- if (labels_profile(label)->data) {
- data = rhashtable_lookup_fast(labels_profile(label)->data, &key,
- labels_profile(label)->data->p);
+ label_for_each_confined(i, label, profile) {
+ if (!profile->data)
+ continue;
+
+ data = rhashtable_lookup_fast(profile->data, &key,
+ profile->data->p);
if (data) {
- if (out + sizeof(outle32) + data->size >
- buf + buf_len) {
+ if (out + sizeof(outle32) + data->size > buf +
+ buf_len) {
aa_put_label(label);
return -EINVAL; /* not enough space */
}
@@ -741,10 +748,12 @@ static ssize_t query_data(char *buf, size_t buf_len,
static ssize_t query_label(char *buf, size_t buf_len,
char *query, size_t query_len, bool view_only)
{
+ struct aa_profile *profile;
struct aa_label *label, *curr;
char *label_name, *match_str;
size_t label_name_len, match_len;
struct aa_perms perms;
+ struct label_it i;
if (!query_len)
return -EINVAL;
@@ -770,7 +779,16 @@ static ssize_t query_label(char *buf, size_t buf_len,
return PTR_ERR(label);
perms = allperms;
- profile_query_cb(labels_profile(label), &perms, match_str, match_len);
+ if (view_only) {
+ label_for_each_in_ns(i, labels_ns(label), label, profile) {
+ profile_query_cb(profile, &perms, match_str, match_len);
+ }
+ } else {
+ label_for_each(i, label, profile) {
+ profile_query_cb(profile, &perms, match_str, match_len);
+ }
+ }
+ aa_put_label(label);
return scnprintf(buf, buf_len,
"allow 0x%08x\ndeny 0x%08x\naudit 0x%08x\nquiet 0x%08x\n",
@@ -877,9 +895,12 @@ static int multi_transaction_release(struct inode *inode, struct file *file)
return 0;
}
+#define QUERY_CMD_LABEL "label\0"
+#define QUERY_CMD_LABEL_LEN 6
#define QUERY_CMD_PROFILE "profile\0"
#define QUERY_CMD_PROFILE_LEN 8
-
+#define QUERY_CMD_LABELALL "labelall\0"
+#define QUERY_CMD_LABELALL_LEN 9
#define QUERY_CMD_DATA "data\0"
#define QUERY_CMD_DATA_LEN 5
@@ -922,6 +943,17 @@ static ssize_t aa_write_access(struct file *file, const char __user *ubuf,
len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
t->data + QUERY_CMD_PROFILE_LEN,
count - QUERY_CMD_PROFILE_LEN, true);
+ } else if (count > QUERY_CMD_LABEL_LEN &&
+ !memcmp(t->data, QUERY_CMD_LABEL, QUERY_CMD_LABEL_LEN)) {
+ len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
+ t->data + QUERY_CMD_LABEL_LEN,
+ count - QUERY_CMD_LABEL_LEN, true);
+ } else if (count > QUERY_CMD_LABELALL_LEN &&
+ !memcmp(t->data, QUERY_CMD_LABELALL,
+ QUERY_CMD_LABELALL_LEN)) {
+ len = query_label(t->data, MULTI_TRANSACTION_LIMIT,
+ t->data + QUERY_CMD_LABELALL_LEN,
+ count - QUERY_CMD_LABELALL_LEN, false);
} else if (count > QUERY_CMD_DATA_LEN &&
!memcmp(t->data, QUERY_CMD_DATA, QUERY_CMD_DATA_LEN)) {
len = query_data(t->data, MULTI_TRANSACTION_LIMIT,