We ought to be checking type, not val, for CMD_INVALID

Author: AZero13

src/exec_monitor.c

@@ -276,7 +276,7 @@ mon_errsock_cb(int fd, int what, void *v)
     nread = read(fd, &errval, sizeof(errval));
     if (nread < 0) {
 	if (errno != EAGAIN && errno != EINTR) {
-	    if (mc->cstat->val == CMD_INVALID) {
+	    if (mc->cstat->type == CMD_INVALID) {
 		/* XXX - need a way to distinguish non-exec error. */
 		mc->cstat->type = CMD_ERRNO;
 		mc->cstat->val = errno;

src/exec_nopty.c

@@ -82,7 +82,7 @@ errpipe_cb(int fd, int what, void *v)
     switch (nread) {
     case -1:
 	if (errno != EAGAIN && errno != EINTR) {
-	    if (ec->cstat->val == CMD_INVALID) {
+	    if (ec->cstat->type == CMD_INVALID) {
 		/* XXX - need a way to distinguish non-exec error. */
 		ec->cstat->type = CMD_ERRNO;
 		ec->cstat->val = errno;

src/exec_pty.c

@@ -678,7 +678,7 @@ backchannel_cb(int fd, int what, void *v)
 	    /* Nothing ready. */
 	    break;
 	default:
-	    if (ec->cstat->val == CMD_INVALID) {
+	    if (ec->cstat->type == CMD_INVALID) {
 		ec->cstat->type = CMD_ERRNO;
 		ec->cstat->val = errno;
 		sudo_debug_printf(SUDO_DEBUG_ERROR,
@@ -752,7 +752,7 @@ backchannel_cb(int fd, int what, void *v)
 	break;
     default:
 	/* Short read, should not happen. */
-	if (ec->cstat->val == CMD_INVALID) {
+	if (ec->cstat->type == CMD_INVALID) {
 	    ec->cstat->type = CMD_ERRNO;
 	    ec->cstat->val = EIO;
 	    sudo_debug_printf(SUDO_DEBUG_ERROR,