Changeset bc18d63 in mainline for kernel/generic/src/proc/task.c

Timestamp:

2009-03-01T15:00:24Z (16 years ago)

Author:

Jiri Svoboda <jirik.svoboda@…>

Branches:

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

Children:

4b241f3

Parents:

4c7257b

Message:

task_set_name() syscall so that we can have names (for userspace-loaded) tasks again.

File:

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

kernel/generic/src/proc/task.c

@@ -250 +250 @@
 }
 
+/** Syscall for setting the task name.
+ *
+ * The name simplifies identifying the task in the task list.
+ *
+ * @param name  The new name for the task. (typically the same
+ *              as the command used to execute it).
+ *
+ * @return 0 on success or an error code from @ref errno.h.
+ */
+unative_t sys_task_set_name(const char *uspace_name, size_t name_len)
+{
+        int rc;
+        char namebuf[TASK_NAME_BUFLEN];
+
+        /* Cap length of name and copy it from userspace. */
+
+        if (name_len > TASK_NAME_BUFLEN - 1)
+                name_len = TASK_NAME_BUFLEN - 1;
+
+        rc = copy_from_uspace(namebuf, uspace_name, name_len);
+        if (rc != 0)
+                return (unative_t) rc;
+
+        namebuf[name_len] = '\0';
+        strcpy(TASK->name, namebuf);
+
+        return EOK;
+}
+
 /** Find task structure corresponding to task ID.
  *