Reset signals to SIG_DFL before starting a child process.

dlls/ntdll/signal_i386.c

@@ -772,7 +772,7 @@ static void do_trap( CONTEXT *context, int trap_code )
         }
         else
         {
-            /* likely we get this because of a kill(SIGTRAP) on ourself, 
+            /* likely we get this because of a kill(SIGTRAP) on ourself,
              * so send a bp exception instead of a single step exception
              */
             TRACE("Spurious single step trap => breakpoint simulation\n");
@@ -1059,9 +1059,6 @@ BOOL SIGNAL_Init(void)
 
     sigfillset( &all_sigs );
 
-    /* automatic child reaping to avoid zombies */
-    signal( SIGCHLD, SIG_IGN );
-
     if (set_handler( SIGINT,  have_sigaltstack, (void (*)())int_handler ) == -1) goto error;
     if (set_handler( SIGFPE,  have_sigaltstack, (void (*)())fpe_handler ) == -1) goto error;
     if (set_handler( SIGSEGV, have_sigaltstack, (void (*)())segv_handler ) == -1) goto error;

dlls/ntdll/signal_sparc.c

@@ -362,11 +362,6 @@ void SIGNAL_Unblock( void )
  */
 BOOL SIGNAL_Init(void)
 {
-    /* ignore SIGPIPE so that WINSOCK can get a EPIPE error instead  */
-    signal( SIGPIPE, SIG_IGN );
-    /* automatic child reaping to avoid zombies */
-    signal( SIGCHLD, SIG_IGN );
-
     sigfillset( &all_sigs );
 
     if (set_handler( SIGINT,  (void (*)())int_handler  ) == -1) goto error;

scheduler/client.c

@@ -677,6 +677,8 @@ void CLIENT_InitThread(void)
 
     /* ignore SIGPIPE so that we get a EPIPE error instead  */
     signal( SIGPIPE, SIG_IGN );
+    /* automatic child reaping to avoid zombies */
+    signal( SIGCHLD, SIG_IGN );
 
     /* create the server->client communication pipes */
     if (pipe( reply_pipe ) == -1) server_protocol_perror( "pipe" );

scheduler/process.c

@@ -25,6 +25,7 @@
 #include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -861,6 +862,10 @@ static int fork_and_exec( const char *filename, char *cmdline,
         char **envp = build_envp( env, extra_env );
         close( fd[0] );
 
+        /* Reset signals that we previously set to SIG_IGN */
+        signal( SIGPIPE, SIG_DFL );
+        signal( SIGCHLD, SIG_DFL );
+
         if (newdir) chdir(newdir);
 
         if (argv && envp)