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kernel: Fix NULL dereference in has_permission_to_signal

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This commit is contained in:
Pawel Dziepak
2014-01-19 19:35:13 +01:00
parent 2c906df217
commit 9d80738d95
1 changed files with 4 additions and 4 deletions
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src/system/kernel/signal.cpp
+4 -4
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@@ -1327,10 +1327,10 @@ has_signals_pending(Thread* thread)
\param team The target team. \param team The target team.
*/ */
static bool static bool
has_permission_to_signal(Signal* signal, Team* team) has_permission_to_signal(Team* team)
{ {
// get the current user // get the current user
uid_t currentUser = signal->SendingUser(); uid_t currentUser = thread_get_current_thread()->team->effective_uid;
// root is omnipotent -- in the other cases the current user must match the // root is omnipotent -- in the other cases the current user must match the
// target team's // target team's
@@ -1368,7 +1368,7 @@ send_signal_to_thread_locked(Thread* thread, uint32 signalNumber,
BReference<Signal> signalReference(signal, true); BReference<Signal> signalReference(signal, true);
if ((flags & B_CHECK_PERMISSION) != 0) { if ((flags & B_CHECK_PERMISSION) != 0) {
if (!has_permission_to_signal(signal, thread->team)) if (!has_permission_to_signal(thread->team))
return EPERM; return EPERM;
} }
@@ -1573,7 +1573,7 @@ send_signal_to_team_locked(Team* team, uint32 signalNumber, Signal* signal,
BReference<Signal> signalReference(signal, true); BReference<Signal> signalReference(signal, true);
if ((flags & B_CHECK_PERMISSION) != 0) { if ((flags & B_CHECK_PERMISSION) != 0) {
if (!has_permission_to_signal(signal, team)) if (!has_permission_to_signal(team))
return EPERM; return EPERM;
} }