removing stub for special handling of 'sd' prefix in file paths from knob

passing a path with an 'sd' prefix will now act like any other path on the first drive, instead of closing the calling program.
eventually, i will add a system of mounting drives directly into a file hierarchy (like in unix), and have all of the system calls just pass a path, no drive number

2 files changed, 5 insertions, 22 deletions

diff --git a/src/user/knob/file.c b/src/user/knob/file.c
index 283f984..8d7a327 100644
--- a/src/user/knob/file.c
+++ b/src/user/knob/file.c
@@ -28,19 +28,8 @@ struct file {
   uint32_t length;
 };
 
-const char *remove_prefix(const char *path, uint8_t *dn_out) {
-  if ((path[0] == 's') && (path[1] == 'd'))
-    PANIC("remove_prefix not fully implemented");
-
-  *dn_out = 0;//change this later to an "active drive" or something
-  return path;
-}
-
 struct file *open_file(const char *path) {
-  uint8_t dn;
-  path = remove_prefix(path, &dn);
-
-  _file_handle_t h = _open_file(dn, path);
+  _file_handle_t h = _open_file(0, path);
   if (!h)
     return 0;
 
@@ -131,16 +120,13 @@ void trunc_file(struct file *f) {
 
 //return value must be manually freed, unless it is a null pointer
 _dir_info_entry_t *get_directory_info(const char *path, uint32_t *count_out) {
-  uint8_t dn;
-  path = remove_prefix(path, &dn);
-
-  uint32_t count = _count_of_dir(dn, path);
+  uint32_t count = _count_of_dir(0, path);
   if (!count) {
     *count_out = 0;
     return 0;
   }
 
   _dir_info_entry_t *buffer = get_block(count * sizeof(_dir_info_entry_t));
-  *count_out = _enumerate_dir(dn, path, buffer, count);
+  *count_out = _enumerate_dir(0, path, buffer, count);
   return buffer;
 }
\ No newline at end of file
diff --git a/src/user/knob/task.c b/src/user/knob/task.c
index 9a49386..9bf2c83 100644
--- a/src/user/knob/task.c
+++ b/src/user/knob/task.c
@@ -8,21 +8,18 @@
 #include <knob/format.h>
 
 _task_handle_t run_command(const char *path, _task_handle_t stdio_task) {
-  uint8_t dn;
-  path = remove_prefix(path, &dn);
-
   for (const char *ptr = path; *ptr; ++ptr)
     if (*ptr == ' ') {
       char *new_path = get_block(ptr - path + 1);
       blockcpy(new_path, path, ptr - path);
       new_path[ptr - path] = '\0';
 
-      _task_handle_t handle = _start_task(dn, new_path, ptr + 1, stdio_task);
+      _task_handle_t handle = _start_task(0, new_path, ptr + 1, stdio_task);
       free_block(new_path);
       return handle;
     }
 
-  return _start_task(dn, path, "", stdio_task);
+  return _start_task(0, path, "", stdio_task);
 }
 
 bool try_run_command_blocking(const char *path, _task_handle_t stdio_task) {