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🆕 exec (存在bug

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This commit is contained in:
fslongjin
2022-05-31 21:55:06 +08:00
parent 844e66f6bb
commit e2a59dbd43
24 changed files with 494 additions and 90 deletions

43
kernel/process/process.h

@ -17,6 +17,7 @@
#include "ptrace.h"
#include <common/errno.h>
#include <filesystem/VFS/VFS.h>
#include <process/wait_queue.h>
// 进程最大可拥有的文件描述符数量
#define PROC_MAX_FD_NUM 16
@ -134,6 +135,9 @@ struct process_control_block
struct process_control_block *next_pcb;
// 父进程的pcb
struct process_control_block *parent_pcb;
int32_t exit_code; // 进程退出时的返回码
wait_queue_node_t wait_child_proc_exit; // 子进程退出等待队列
};
// 将进程的pcb和内核栈融合到一起,8字节对齐
@ -159,7 +163,9 @@ union proc_union
.cpu_id = 0, \
.fds = {0}, \
.next_pcb = &proc, \
.parent_pcb = &proc \
.parent_pcb = &proc, \
.exit_code = 0, \
.wait_child_proc_exit = 0 \
}
/**
@ -280,6 +286,39 @@ struct process_control_block *process_get_pcb(long pid);
*/
void process_wakeup(struct process_control_block *pcb);
/**
* @brief 使当前进程去执行新的代码
*
* @param regs 当前进程的寄存器
* @param path 可执行程序的路径
* @param argv 参数列表
* @param envp 环境变量
* @return ul 错误码
*/
ul do_execve(struct pt_regs *regs, char *path, char *argv[], char *envp[]);
/**
* @brief 释放进程的页表
*
* @param pcb 要被释放页表的进程
* @return uint64_t
*/
uint64_t process_exit_mm(struct process_control_block *pcb);
/**
* @brief 进程退出时执行的函数
*
* @param code 返回码
* @return ul
*/
ul process_do_exit(ul code);
/**
* @brief 当子进程退出后向父进程发送通知
*
*/
void process_exit_notify();
/**
* @brief 切换页表
* @param prev 前一个进程的pcb
@ -305,4 +344,4 @@ extern struct tss_struct initial_tss[MAX_CPU_NUM];
extern struct mm_struct initial_mm;
extern struct thread_struct initial_thread;
extern union proc_union initial_proc_union;
extern struct process_control_block *initial_proc[MAX_CPU_NUM];
extern struct process_control_block *initial_proc[MAX_CPU_NUM];