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Task initally exec'ing with success. Some errors need to be investigated.

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- Directory creation, file read/write is OK.
- Cannot reuse old task's fds. They are not recycled for some reason.
- Problems with fork/clone/exit. They fail for a reason.
This commit is contained in:
Bahadir Balban
2008-12-01 13:53:50 +02:00
parent 783b1e025f
commit 05d8438f34
14 changed files with 239 additions and 79 deletions
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42
tasks/mm0/src/exit.c
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@@ -68,7 +68,37 @@ int task_close_files(struct tcb *task)
return err;
}
void do_exit(struct tcb *task, unsigned int flags, int status)
/* Prepare old task's environment for new task */
int execve_recycle_task(struct tcb *task)
{
int err;
struct task_ids ids = {
.tid = task->tid,
.spid = task->spid,
.tgid = task->tgid,
};
/* Flush all IO on task's files and close fds */
task_close_files(task);
/* Vfs still knows the thread */
/* Keep the utcb on vfs */
/* Ask the kernel to recycle the thread */
if ((err = l4_thread_control(THREAD_RECYCLE, &ids)) < 0) {
printf("%s: Suspending thread %d failed with %d.\n",
__FUNCTION__, task->tid, err);
return err;
}
/* Destroy the locally known tcb */
tcb_destroy(task);
return 0;
}
void do_exit(struct tcb *task, int status)
{
struct task_ids ids = {
.tid = task->tid,
@@ -89,14 +119,8 @@ void do_exit(struct tcb *task, unsigned int flags, int status)
/* Free task's local tcb */
tcb_destroy(task);
/* Ask the kernel to reset this thread's page tables */
if (flags & EXIT_UNMAP_ALL_SPACE)
l4_unmap((void *)UNMAP_ALL_SPACE,
UNMAP_ALL_SPACE, task->tid);
/* Ask the kernel to delete the thread from its records */
if (flags & EXIT_THREAD_DESTROY)
l4_thread_control(THREAD_DESTROY, &ids);
l4_thread_control(THREAD_DESTROY, &ids);
/* TODO: Wake up any waiters about task's destruction */
#if 0
@@ -111,6 +135,6 @@ void do_exit(struct tcb *task, unsigned int flags, int status)
void sys_exit(struct tcb *task, int status)
{
do_exit(task, EXIT_THREAD_DESTROY, status);
do_exit(task, status);
}