Changeset d9fae235 in mainline for uspace/lib/c/generic/task.c

Timestamp:

2010-04-17T01:28:38Z (15 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

9d6bfa5

Parents:

9256ad29

Message:

sysinfo overhaul

• cleanup (nicer data structures, use of SLAB allocator)
• add support for storing arbitrary binary data
• properly reimplement non-constant values (generated by functions)
• add support for non-constant subtrees (generated by functions)
• syscall ABI change, libc API change
• reflect changes in user code

libc: task_spawn() can now return error code

• reflect change in user code, print error strings after failed task_spawn()

uspace cleanup

• more use of string and other constants
• more use of str_error()
• unify error reporting in init

File:

• uspace/lib/c/generic/task.c (modified) (3 diffs)

uspace/lib/c/generic/task.c

@@ -70 +70 @@
  * loader API.
  *
- * @param path pathname of the binary to execute
- * @param argv command-line arguments
+ * @param path Pathname of the binary to execute.
+ * @param argv Command-line arguments.
+ * @param err  If not NULL, the error value is stored here.
  *
  * @return ID of the newly created task or zero on error.
  *
  */
-task_id_t task_spawn(const char *path, const char *const args[])
+task_id_t task_spawn(const char *path, const char *const args[], int *err)
 {
         /* Connect to a program loader. */
         loader_t *ldr = loader_connect();
-        if (ldr == NULL)
+        if (ldr == NULL) {
+                if (err != NULL)
+                        *err = EREFUSED;
+                
                 return 0;
+        }
         
         /* Get task ID. */
@@ -143 +148 @@
         /* Success */
         free(ldr);
+        
+        if (err != NULL)
+                *err = EOK;
+        
         return task_id;
         
@@ -149 +158 @@
         loader_abort(ldr);
         free(ldr);
+        
+        if (err != NULL)
+                *err = rc;
         
         return 0;