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fslongjin
2022-06-02 14:20:53 +08:00
parent b97aaee746
commit d64ddfa0b6
12 changed files with 243 additions and 299 deletions
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6
kernel/syscall/syscall.c
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@ -270,7 +270,7 @@ uint64_t sys_read(struct pt_regs *regs)
void *buf = (void *)regs->r9;
int64_t count = (int64_t)regs->r10;
// kdebug("sys read: fd=%d", fd_num);
// kdebug("sys read: fd=%d", fd_num);
// 校验文件描述符范围
if (fd_num < 0 || fd_num > PROC_MAX_FD_NUM)
@ -605,7 +605,7 @@ uint64_t sys_wait4(struct pt_regs *regs)
uint64_t pid = regs->r8;
int *status = (int *)regs->r9;
int options = regs->r10;
void *rusage = regs->r11;
void *rusage = (void*)regs->r11;
struct process_control_block *proc = NULL;
struct process_control_block *child_proc = NULL;
@ -634,7 +634,7 @@ uint64_t sys_wait4(struct pt_regs *regs)
wait_queue_sleep_on_interriptible(&current_pcb->wait_child_proc_exit);
// 拷贝子进程的返回码
copy_to_user(status, child_proc->exit_code, sizeof(int));
copy_to_user(status, (void*)child_proc->exit_code, sizeof(int));
proc->next_pcb = child_proc->next_pcb;
// 释放子进程的页表