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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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10
tasks/mm0/src/clone.c
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@@ -14,6 +14,7 @@
#include <mmap.h>
#include <utcb.h>
#include <shm.h>
#include <test.h>
#include <clone.h>
/*
@@ -110,14 +111,15 @@ int do_clone(struct tcb *parent, unsigned long child_stack, unsigned int flags)
ids.tid = TASK_ID_INVALID;
ids.spid = parent->spid;
if (flags & TCB_SAME_GROUP)
/* Determine whether the cloned thread is in parent's thread group */
if (flags & TCB_SHARED_TGROUP)
ids.tgid = parent->tgid;
else
ids.tgid = TASK_ID_INVALID;
if (IS_ERR(child = task_create(parent, &ids, THREAD_SAME_SPACE, flags)))
return (int)child;
/* Set up child stack marks with given stack argument */
child->stack_end = child_stack;
child->stack_start = 0;
@@ -167,7 +169,9 @@ int sys_clone(struct tcb *parent, void *child_stack, unsigned int clone_flags)
if (clone_flags & CLONE_FILES)
flags |= TCB_SHARED_FILES;
if (clone_flags & CLONE_THREAD)
flags |= TCB_SAME_GROUP;
flags |= TCB_SHARED_TGROUP;
if (clone_flags & CLONE_PARENT)
flags |= TCB_SHARED_PARENT;
return do_clone(parent, (unsigned long)child_stack, flags);
}