12 int process_copy_files(uint64_t clone_flags, struct process_control_block *pcb);
13 int process_copy_flags(uint64_t clone_flags, struct process_control_block *pcb);
14 int process_copy_mm(uint64_t clone_flags, struct process_control_block *pcb);
15 int process_copy_thread(uint64_t clone_flags, struct process_control_block *pcb, uint64_t stack_sta…
18 extern int process_copy_sighand(uint64_t clone_flags, struct process_control_block *pcb);
19 extern int process_copy_signal(uint64_t clone_flags, struct process_control_block *pcb);
20 extern void process_exit_sighand(struct process_control_block *pcb);
21 extern void process_exit_signal(struct process_control_block *pcb);
81     tsk->prev_pcb = &initial_proc_union.pcb;  in do_fork()
83     tsk->next_pcb = initial_proc_union.pcb.next_pcb;  in do_fork()
85     initial_proc_union.pcb.next_pcb = tsk;  in do_fork()
169 int process_copy_flags(uint64_t clone_flags, struct process_control_block *pcb)  in process_copy_flags()  argument
172         pcb->flags |= PF_VFORK;  in process_copy_flags()
183 int process_copy_files(uint64_t clone_flags, struct process_control_block *pcb)  in process_copy_files()  argument
197         pcb->fds[i] = (struct vfs_file_t *)kmalloc(sizeof(struct vfs_file_t), 0);  in process_copy_files()
198         memcpy(pcb->fds[i], current_pcb->fds[i], sizeof(struct vfs_file_t));  in process_copy_files()
211 int process_copy_mm(uint64_t clone_flags, struct process_control_block *pcb)  in process_copy_mm()  argument
217         pcb->mm = current_pcb->mm;  in process_copy_mm()
228     pcb->mm = new_mms;  in process_copy_mm()
345 int process_copy_thread(uint64_t clone_flags, struct process_control_block *pcb, uint64_t stack_sta…  in process_copy_thread()  argument
349     struct thread_struct *thd = (struct thread_struct *)(pcb + 1);  in process_copy_thread()
351     pcb->thread = thd;  in process_copy_thread()
355     if (pcb->flags & PF_KFORK) // 内核态下的fork  in process_copy_thread()
360         child_regs = (struct pt_regs *)(((uint64_t)pcb) + STACK_SIZE - size);  in process_copy_thread()
364         process_rewrite_rbp(child_regs, pcb);  in process_copy_thread()
368         child_regs = (struct pt_regs *)((uint64_t)pcb + STACK_SIZE - sizeof(struct pt_regs));  in process_copy_thread()
376     if (pcb->flags & PF_KFORK)  in process_copy_thread()
380         thd->rbp = (uint64_t)pcb + STACK_SIZE;  in process_copy_thread()
388     if (pcb->flags & PF_KFORK)  in process_copy_thread()
390     else if (pcb->flags & PF_KTHREAD && (!(pcb->flags & PF_KFORK)))  in process_copy_thread()