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Added preliminary support for execve(). Updates to clone, fork, exit, task handling.

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It turned out we used one version of kmalloc for malloc() and another for kfree()!
Now fixed.
Added parent-child relationship to tasks. Need to polish handling CLONE_PARENT and THREAD.
This commit is contained in:
Bahadir Balban
2008-11-19 12:59:52 +02:00
parent d182b5b35a
commit 46937eab88
39 changed files with 502 additions and 1192 deletions
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20
tasks/mm0/src/exit.c
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@@ -6,6 +6,8 @@
#include <task.h>
#include <file.h>
#include <utcb.h>
#include <exit.h>
#include <test.h>
#include <vm_area.h>
#include <syscalls.h>
#include <l4lib/arch/syslib.h>
@@ -13,6 +15,7 @@
#include <l4lib/exregs.h>
#include <l4lib/ipcdefs.h>
#include <lib/malloc.h>
#include <l4/api/space.h>
/*
* Sends vfs task information about forked child, and its utcb
@@ -65,7 +68,7 @@ int task_close_files(struct tcb *task)
return err;
}
void sys_exit(struct tcb *task, int status)
void do_exit(struct tcb *task, unsigned int flags, int status)
{
struct task_ids ids = {
.tid = task->tid,
@@ -86,8 +89,14 @@ void sys_exit(struct tcb *task, int status)
/* Free task's local tcb */
tcb_destroy(task);
/* Ask the kernel to delete it from its records */
l4_thread_control(THREAD_DESTROY, &ids);
/* 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);
/* TODO: Wake up any waiters about task's destruction */
#if 0
@@ -100,3 +109,8 @@ void sys_exit(struct tcb *task, int status)
#endif
}
void sys_exit(struct tcb *task, int status)
{
do_exit(task, EXIT_THREAD_DESTROY, status);
}