init.c 文件参考

浏览源代码.

函数
int	main (int argc, char *const *argv)

函数说明

main()

int main	(	int	argc,
		char *const *	argv
	)

在文件 init.c 第 49 行定义.

{
    (void)argv;
    int ret;
    pid_t gid;
    const char *shellPath = "/bin/mksh";
 
#ifdef LOSCFG_QUICK_START
    const char *samplePath = "/dev/shm/sample_quickstart";
 
    ret = fork();
    if (ret < 0) {
        printf("Failed to fork for sample_quickstart\n");
    } else if (ret == 0) {
        (void)execve(samplePath, NULL, NULL);
        exit(0);
    }
 
    usleep(WAIT_FOR_SAMPLE);
 
    int fd = open("/dev/quickstart", O_RDONLY);
    if (fd != -1) {
        ioctl(fd, QUICKSTART_INITSTEP2);
        close(fd);
    }
#endif
    ret = fork();
    if (ret < 0) {
        printf("Failed to fork for shell\n");
    } else if (ret == 0) {
        gid = getpgrp();
        if (gid < 0) {
            printf("get group id failed, pgrpid %d, errno %d\n", gid, errno);
            exit(0);
        }
        ret = tcsetpgrp(STDIN_FILENO, gid);
        if (ret != 0) {
            printf("tcsetpgrp failed, errno %d\n", errno);
            exit(0);
        }
        (void)execve(shellPath, NULL, NULL);
        exit(0);
    }
 
    while (1) {
        ret = waitpid(-1, 0, WNOHANG);
        if (ret == 0) {
            sleep(1);
        }
    };
}

函数调用图: