request.c

unix环境高级编程的源代码

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

void
request(char *buf, int nread, int clifd, uid_t uid)
{
    int        newfd;

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

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

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

            /* send the descriptor */
    if (send_fd(clifd, newfd) < 0)
        log_sys("send_fd error");
    log_msg("sent fd %d over fd %d for %s", newfd, clifd, pathname);
    close(newfd);        /* we're done with descriptor */
}