request.c

来自「unix环境高级编程的源代码」· C语言 代码 · 共 34 行

#include    "opend.h"
#include    <fcntl.h>

void
request(char *buf, int nread, int fd)
{
    int        newfd;

    if (buf[nread-1] != 0) {
        sprintf(errmsg, "request not null terminated: %*.*s\n",
                                    nread, nread, buf);
        send_err(STDOUT_FILENO, -1, errmsg);
        return;
    }

            /* parse the arguments, set options */
    if (buf_args(buf, cli_args) < 0) {
        send_err(STDOUT_FILENO, -1, errmsg);
        return;
    }

    if ( (newfd = open(pathname, oflag)) < 0) {
        sprintf(errmsg, "can't open %s: %s\n",
                                pathname, strerror(errno));
        send_err(STDOUT_FILENO, -1, errmsg);
        return;
    }

            /* send the descriptor */
    if (send_fd(STDOUT_FILENO, newfd) < 0)
        err_sys("send_fd error");
    close(newfd);        /* we're done with descriptor */
}