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xselinux: Introduce a type transition when labeling events.

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This commit is contained in:
Eamon Walsh 2007-10-24 19:59:58 -04:00 committed by Eamon Walsh
parent 0d2ef187e7
commit 4b05f19cb9
1 changed files with 12 additions and 5 deletions
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17
Xext/xselinux.c
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@ -194,7 +194,8 @@ SELinuxSelectionToSID(Atom selection, SELinuxStateRec *sid_return)
* Looks up the SID corresponding to the given event type * Looks up the SID corresponding to the given event type
*/ */
static int static int
SELinuxEventToSID(unsigned type, SELinuxStateRec *sid_return) SELinuxEventToSID(unsigned type, security_id_t sid_of_window,
SELinuxStateRec *sid_return)
{ {
const char *name = LookupEventName(type); const char *name = LookupEventName(type);
security_context_t con; security_context_t con;
@ -212,7 +213,7 @@ SELinuxEventToSID(unsigned type, SELinuxStateRec *sid_return)
} }
if (!knownEvents[type]) { if (!knownEvents[type]) {
/* Look in the mappings of property names to contexts */ /* Look in the mappings of event names to contexts */
if (selabel_lookup(label_hnd, &con, name, SELABEL_X_EVENT) < 0) { if (selabel_lookup(label_hnd, &con, name, SELABEL_X_EVENT) < 0) {
ErrorF("XSELinux: an event label lookup failed!\n"); ErrorF("XSELinux: an event label lookup failed!\n");
return BadValue; return BadValue;
@ -225,7 +226,13 @@ SELinuxEventToSID(unsigned type, SELinuxStateRec *sid_return)
freecon(con); freecon(con);
} }
sid_return->sid = knownEvents[type]; /* Perform a transition to obtain the final SID */
if (avc_compute_create(sid_of_window, knownEvents[type], SECCLASS_X_EVENT,
&sid_return->sid) < 0) {
ErrorF("XSELinux: a compute_create call failed!\n");
return BadValue;
}
return Success; return Success;
} }
@ -522,7 +529,7 @@ SELinuxSend(CallbackListPtr *pcbl, pointer unused, pointer calldata)
for (i = 0; i < rec->count; i++) { for (i = 0; i < rec->count; i++) {
SELinuxStateRec ev_sid; SELinuxStateRec ev_sid;
rc = SELinuxEventToSID(rec->events[i].u.u.type, &ev_sid); rc = SELinuxEventToSID(rec->events[i].u.u.type, obj->sid, &ev_sid);
if (rc != Success) if (rc != Success)
goto err; goto err;
@ -558,7 +565,7 @@ SELinuxReceive(CallbackListPtr *pcbl, pointer unused, pointer calldata)
for (i = 0; i < rec->count; i++) { for (i = 0; i < rec->count; i++) {
SELinuxStateRec ev_sid; SELinuxStateRec ev_sid;
rc = SELinuxEventToSID(rec->events[i].u.u.type, &ev_sid); rc = SELinuxEventToSID(rec->events[i].u.u.type, obj->sid, &ev_sid);
if (rc != Success) if (rc != Success)
goto err; goto err;