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Code Issues Releases Wiki Activity

add ipc pipe (#28)

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This commit is contained in:
zzy666-hw
2022-08-20 21:47:41 +08:00
committed by GitHub
parent fd9d001d23
commit 554b73ec99
16 changed files with 283 additions and 5 deletions
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21
kernel/process/process.c
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@ -1142,4 +1142,23 @@ void process_exit_thread(struct process_control_block *pcb)
{
}
// #pragma GCC pop_options
/**
* @brief 申请可用的文件句柄
*
* @return int
*/
int process_fd_alloc(struct vfs_file_t *file)
{
int fd_num = -1;
struct vfs_file_t **f = current_pcb->fds;
for (int i = 0; i < PROC_MAX_FD_NUM; ++i) {
/* 找到指针数组中的空位 */
if (f[i] == NULL) {
fd_num = i;
f[i] = file;
break;
}
}
return fd_num;
}

1
kernel/process/process.h
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@ -213,3 +213,4 @@ 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];
int process_fd_alloc(struct vfs_file_t *file);