Changeset ec55358 in mainline for generic/src/proc/task.c

Timestamp:

2006-04-12T11:59:36Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

b7f364e

Parents:

1077d91

Message:

Kernel support for SYS_GET_TASK_ID syscall.

File:

• generic/src/proc/task.c (modified) (1 diff)

generic/src/proc/task.c

@@ -156 +156 @@
 }
 
+/** Syscall for reading task ID from userspace.
+ *
+ * @param uaddr Userspace address of 8-byte buffer where to store current task ID.
+ *
+ * @return Always returns 0.
+ */
+__native sys_get_task_id(task_id_t *uspace_task_id)
+{
+        /*
+         * No need to acquire lock on TASK because taskid
+         * remains constant for the lifespan of the task.
+         */
+        copy_to_uspace(uspace_task_id, &TASK->taskid, sizeof(TASK->taskid));
+
+        return 0;
+}
+
 /** Print task list */
 void task_print_list(void)