5 files changed, 24 insertions, 9 deletions
diff --git a/src/user/highway/highway.c b/src/user/highway/highway.c
index 8dc0080..7e78472 100644
--- a/src/user/highway/highway.c
+++ b/src/user/highway/highway.c
@@ -18,9 +18,7 @@ void main() {
     ask_user_line_sz(line_buf, 1023);
     if (blockequ(line_buf, "exit", 5))
       return;
-    if (try_run_command(path_buf))
-      yield_task();
-    else
+    if (!try_run_command_blocking(path_buf))
       tell_user_sz("An error occured trying to run that command.\n");
   }
 }
 \ No newline at end of file
diff --git a/src/user/include/knob/task.h b/src/user/include/knob/task.h
index ea5df62..6539a00 100644
--- a/src/user/include/knob/task.h
+++ b/src/user/include/knob/task.h
@@ -1,9 +1,11 @@
 #ifndef KNOB_TASK_H
 #define KNOB_TASK_H
 
+#include <stdint.h>
 #include <stdbool.h>
 
-bool try_run_command(const char *path);
+uint32_t run_command(const char *path);
+bool try_run_command_blocking(const char *path);
 void yield_task();
 
 #endif
 \ No newline at end of file
diff --git a/src/user/include/pland/syscall.h b/src/user/include/pland/syscall.h
index c597e2b..75383fc 100644
--- a/src/user/include/pland/syscall.h
+++ b/src/user/include/pland/syscall.h
@@ -8,6 +8,7 @@ typedef uint32_t _file_handle_t;
 typedef uint32_t _task_handle_t;
 typedef uint32_t _drive_number_t;
 typedef uint32_t _pages_t;
+typedef uint32_t _process_handle_t;
 
 typedef enum {
   _KEY_BACKSPACE = '\b',
@@ -43,7 +44,8 @@ enum _scn {
   _SCN_LOG_STRING,
   _SCN_GET_KEY,
   _SCN_ALLOCATE_RAM,
-  _SCN_MEMORY_INFO
+  _SCN_MEMORY_INFO,
+  _SCN_WAIT_FOR_TASK
 };
 
 static inline uint32_t _sc0(enum _scn eax) {
@@ -124,8 +126,8 @@ static inline uint32_t _file_size(_file_handle_t handle) {
   return _sc1(_SCN_FILE_SIZE, handle);
 }
 
-static inline bool _start_task(_drive_number_t drive_number, const char *path, const char *pass) {
-  return (bool)_sc3(_SCN_START_TASK, drive_number, (uint32_t)path, (uint32_t)pass);
+static inline _process_handle_t _start_task(_drive_number_t drive_number, const char *path, const char *pass) {
+  return _sc3(_SCN_START_TASK, drive_number, (uint32_t)path, (uint32_t)pass);
 }
 
 static inline void _log_string(const char *sz) {
@@ -160,4 +162,8 @@ static inline _pages_t _this_process_memory_left() {
   return _sc1(_SCN_MEMORY_INFO, 0x4);
 }
 
+static inline void _wait_for_task(_process_handle_t handle) {
+  _sc1(_SCN_WAIT_FOR_TASK, handle);
+}
+
 #endif
 \ No newline at end of file
diff --git a/src/user/init/init.c b/src/user/init/init.c
index 390b731..e878603 100644
--- a/src/user/init/init.c
+++ b/src/user/init/init.c
@@ -7,7 +7,7 @@ void start(const char *cmd) {
   tell_user_sz(cmd);
   tell_user_sz(": ");
   tell_user_sz(
-    try_run_command(cmd)
+    run_command(cmd)
       ? "Succeded.\n"
       : "Failed.\n"
   );
diff --git a/src/user/knob/task.c b/src/user/knob/task.c
index 598bee2..df5d38f 100644
--- a/src/user/knob/task.c
+++ b/src/user/knob/task.c
@@ -4,7 +4,7 @@
 #include <knob/heap.h>
 #include <knob/block.h>
 
-bool try_run_command(const char *path) {
+_task_handle_t run_command(const char *path) {
   uint8_t dn;
   path = remove_prefix(path, &dn);
 
@@ -22,6 +22,15 @@ bool try_run_command(const char *path) {
   return _start_task(dn, path, "");
 }
 
+bool try_run_command_blocking(const char *path) {
+  _task_handle_t handle = run_command(path);
+  if (!handle)
+    return false;
+  _wait_for_task(handle);
+  _yield_task();
+  return true;
+}
+
 void yield_task() {
   _yield_task();
 }
 \ No newline at end of file