Bug 1310116 - Allow waitpid but warn on creating processes in content. r=jld

MozReview-Commit-ID: JjNfA6wUe3T

--HG--
extra : rebase_source : ad565d238e7554a951d2f6b4e076918bdfd7a450
extra : histedit_source : 127ff408e498f7c687cf6e7f8f7b4e2fbb8c5ae8

security/sandbox/linux/SandboxFilter.cpp

@@ -719,6 +719,9 @@ public:
     case __NR_umask:
     case __NR_kill:
     case __NR_wait4:
+#ifdef __NR_waitpid
+    case __NR_waitpid:
+#endif
 #ifdef __NR_arch_prctl
     case __NR_arch_prctl:
 #endif

xpcom/threads/nsProcessCommon.cpp

@@ -23,6 +23,7 @@
 #include "nsCRT.h"
 #include "nsThreadUtils.h"
 #include "nsIObserverService.h"
+#include "nsXULAppAPI.h"
 #include "mozilla/Services.h"
 
 #include <stdlib.h>
@@ -430,6 +431,9 @@ nsresult
 nsProcess::RunProcess(bool aBlocking, char** aMyArgv, nsIObserver* aObserver,
                       bool aHoldWeak, bool aArgsUTF8)
 {
+  NS_WARNING_ASSERTION(!XRE_IsContentProcess(),
+                       "No launching of new processes in the content process");
+
   if (NS_WARN_IF(!mExecutable)) {
     return NS_ERROR_NOT_INITIALIZED;
   }