KEYS: Move the flags representing required permission to linux/key.h
Move the flags representing required permission to linux/key.h as the perm
parameter of security_key_permission() is in terms of them - and not the
permissions mask flags used in key->perm.
Whilst we're at it:
(1) Rename them to be KEY_NEED_xxx rather than KEY_xxx to avoid collisions
with symbols in uapi/linux/input.h.
(2) Don't use key_perm_t for a mask of required permissions, but rather limit
it to the permissions mask attached to the key and arguments related
directly to that.
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index cee72ce..cd5bd0c 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -111,7 +111,7 @@
}
/* find the target keyring (which must be writable) */
- keyring_ref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_WRITE);
+ keyring_ref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_NEED_WRITE);
if (IS_ERR(keyring_ref)) {
ret = PTR_ERR(keyring_ref);
goto error3;
@@ -195,7 +195,7 @@
dest_ref = NULL;
if (destringid) {
dest_ref = lookup_user_key(destringid, KEY_LOOKUP_CREATE,
- KEY_WRITE);
+ KEY_NEED_WRITE);
if (IS_ERR(dest_ref)) {
ret = PTR_ERR(dest_ref);
goto error3;
@@ -253,7 +253,7 @@
long ret;
lflags = create ? KEY_LOOKUP_CREATE : 0;
- key_ref = lookup_user_key(id, lflags, KEY_SEARCH);
+ key_ref = lookup_user_key(id, lflags, KEY_NEED_SEARCH);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error;
@@ -334,7 +334,7 @@
}
/* find the target key (which must be writable) */
- key_ref = lookup_user_key(id, 0, KEY_WRITE);
+ key_ref = lookup_user_key(id, 0, KEY_NEED_WRITE);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error2;
@@ -365,12 +365,12 @@
key_ref_t key_ref;
long ret;
- key_ref = lookup_user_key(id, 0, KEY_WRITE);
+ key_ref = lookup_user_key(id, 0, KEY_NEED_WRITE);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
if (ret != -EACCES)
goto error;
- key_ref = lookup_user_key(id, 0, KEY_SETATTR);
+ key_ref = lookup_user_key(id, 0, KEY_NEED_SETATTR);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error;
@@ -401,7 +401,7 @@
kenter("%d", id);
- key_ref = lookup_user_key(id, 0, KEY_SEARCH);
+ key_ref = lookup_user_key(id, 0, KEY_NEED_SEARCH);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error;
@@ -428,7 +428,7 @@
key_ref_t keyring_ref;
long ret;
- keyring_ref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_WRITE);
+ keyring_ref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_NEED_WRITE);
if (IS_ERR(keyring_ref)) {
ret = PTR_ERR(keyring_ref);
@@ -470,13 +470,13 @@
key_ref_t keyring_ref, key_ref;
long ret;
- keyring_ref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_WRITE);
+ keyring_ref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_NEED_WRITE);
if (IS_ERR(keyring_ref)) {
ret = PTR_ERR(keyring_ref);
goto error;
}
- key_ref = lookup_user_key(id, KEY_LOOKUP_CREATE, KEY_LINK);
+ key_ref = lookup_user_key(id, KEY_LOOKUP_CREATE, KEY_NEED_LINK);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error2;
@@ -505,7 +505,7 @@
key_ref_t keyring_ref, key_ref;
long ret;
- keyring_ref = lookup_user_key(ringid, 0, KEY_WRITE);
+ keyring_ref = lookup_user_key(ringid, 0, KEY_NEED_WRITE);
if (IS_ERR(keyring_ref)) {
ret = PTR_ERR(keyring_ref);
goto error;
@@ -548,7 +548,7 @@
char *tmpbuf;
long ret;
- key_ref = lookup_user_key(keyid, KEY_LOOKUP_PARTIAL, KEY_VIEW);
+ key_ref = lookup_user_key(keyid, KEY_LOOKUP_PARTIAL, KEY_NEED_VIEW);
if (IS_ERR(key_ref)) {
/* viewing a key under construction is permitted if we have the
* authorisation token handy */
@@ -639,7 +639,7 @@
}
/* get the keyring at which to begin the search */
- keyring_ref = lookup_user_key(ringid, 0, KEY_SEARCH);
+ keyring_ref = lookup_user_key(ringid, 0, KEY_NEED_SEARCH);
if (IS_ERR(keyring_ref)) {
ret = PTR_ERR(keyring_ref);
goto error2;
@@ -649,7 +649,7 @@
dest_ref = NULL;
if (destringid) {
dest_ref = lookup_user_key(destringid, KEY_LOOKUP_CREATE,
- KEY_WRITE);
+ KEY_NEED_WRITE);
if (IS_ERR(dest_ref)) {
ret = PTR_ERR(dest_ref);
goto error3;
@@ -676,7 +676,7 @@
/* link the resulting key to the destination keyring if we can */
if (dest_ref) {
- ret = key_permission(key_ref, KEY_LINK);
+ ret = key_permission(key_ref, KEY_NEED_LINK);
if (ret < 0)
goto error6;
@@ -727,7 +727,7 @@
key = key_ref_to_ptr(key_ref);
/* see if we can read it directly */
- ret = key_permission(key_ref, KEY_READ);
+ ret = key_permission(key_ref, KEY_NEED_READ);
if (ret == 0)
goto can_read_key;
if (ret != -EACCES)
@@ -799,7 +799,7 @@
goto error;
key_ref = lookup_user_key(id, KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL,
- KEY_SETATTR);
+ KEY_NEED_SETATTR);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error;
@@ -905,7 +905,7 @@
goto error;
key_ref = lookup_user_key(id, KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL,
- KEY_SETATTR);
+ KEY_NEED_SETATTR);
if (IS_ERR(key_ref)) {
ret = PTR_ERR(key_ref);
goto error;
@@ -947,7 +947,7 @@
/* if a specific keyring is nominated by ID, then use that */
if (ringid > 0) {
- dkref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_WRITE);
+ dkref = lookup_user_key(ringid, KEY_LOOKUP_CREATE, KEY_NEED_WRITE);
if (IS_ERR(dkref))
return PTR_ERR(dkref);
*_dest_keyring = key_ref_to_ptr(dkref);
@@ -1315,7 +1315,7 @@
long ret;
key_ref = lookup_user_key(id, KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL,
- KEY_SETATTR);
+ KEY_NEED_SETATTR);
if (IS_ERR(key_ref)) {
/* setting the timeout on a key under construction is permitted
* if we have the authorisation token handy */
@@ -1418,7 +1418,7 @@
char *context;
long ret;
- key_ref = lookup_user_key(keyid, KEY_LOOKUP_PARTIAL, KEY_VIEW);
+ key_ref = lookup_user_key(keyid, KEY_LOOKUP_PARTIAL, KEY_NEED_VIEW);
if (IS_ERR(key_ref)) {
if (PTR_ERR(key_ref) != -EACCES)
return PTR_ERR(key_ref);
@@ -1482,7 +1482,7 @@
struct cred *cred;
int ret;
- keyring_r = lookup_user_key(KEY_SPEC_SESSION_KEYRING, 0, KEY_LINK);
+ keyring_r = lookup_user_key(KEY_SPEC_SESSION_KEYRING, 0, KEY_NEED_LINK);
if (IS_ERR(keyring_r))
return PTR_ERR(keyring_r);