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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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36
tasks/mm0/include/task.h
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@@ -14,6 +14,7 @@
#include <l4lib/utcb.h>
#include <lib/addr.h>
#include <l4/api/kip.h>
#include <exec.h>
#define __TASKNAME__ __PAGERNAME__
@@ -31,7 +32,8 @@
#define TCB_SHARED_VM (1 << 0)
#define TCB_SHARED_FILES (1 << 1)
#define TCB_SHARED_FS (1 << 2)
#define TCB_SAME_GROUP (1 << 3)
#define TCB_SHARED_TGROUP (1 << 3)
#define TCB_SHARED_PARENT (1 << 4)
struct vm_file;
@@ -57,6 +59,14 @@ struct tcb {
/* Task list */
struct list_head list;
/* Fields for parent-child relations */
struct list_head child_ref; /* Child ref in parent's list */
struct list_head children; /* List of children */
struct tcb *parent; /* Parent task */
/* Task creation flags */
unsigned int clone_flags;
/* Name of the task */
char name[16];
@@ -66,13 +76,14 @@ struct tcb {
int tgid;
/* Related task ids */
unsigned int pagerid; /* Task's pager */
unsigned int pagerid; /* Task's pager */
/* Task's main address space region, usually USER_AREA_START/END */
unsigned long start;
unsigned long end;
/* Page aligned program segment marks, ends exclusive as usual */
unsigned long entry;
unsigned long text_start;
unsigned long text_end;
unsigned long data_start;
@@ -102,17 +113,6 @@ struct tcb {
struct task_fd_head *files;
};
/* Structures to use when sending new task information to vfs */
struct task_data {
unsigned long tid;
unsigned long utcb_address;
};
struct task_data_head {
unsigned long total;
struct task_data tdata[];
};
struct tcb_head {
struct list_head list;
int total; /* Total threads */
@@ -121,20 +121,16 @@ struct tcb_head {
struct tcb *find_task(int tid);
void global_add_task(struct tcb *task);
void global_remove_task(struct tcb *task);
int send_task_data(struct tcb *requester);
void task_map_prefault_utcb(struct tcb *mapper, struct tcb *owner);
int task_mmap_regions(struct tcb *task, struct vm_file *file);
int task_setup_regions(struct vm_file *file, struct tcb *task,
unsigned long task_start, unsigned long task_end);
int task_mmap_segments(struct tcb *task, struct vm_file *file, struct exec_file_desc *efd);
int task_setup_registers(struct tcb *task, unsigned int pc,
unsigned int sp, l4id_t pager);
struct tcb *tcb_alloc_init(unsigned int flags);
int tcb_destroy(struct tcb *task);
struct tcb *task_exec(struct vm_file *f, unsigned long task_region_start,
unsigned long task_region_end, struct task_ids *ids);
int task_start(struct tcb *task, struct task_ids *ids);
int task_start(struct tcb *task);
int copy_tcb(struct tcb *to, struct tcb *from, unsigned int flags);
int task_release_vmas(struct task_vma_head *vma_head);
int task_prefault_regions(struct tcb *task, struct vm_file *f);
struct tcb *task_create(struct tcb *orig,
struct task_ids *ids,
unsigned int ctrl_flags,