UAcceptS.c

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#include "syshdrs.h"
 
#if !defined(NO_UNIX_DOMAIN_SOCKETS)
 
int
UAcceptS(int sfd, struct sockaddr_un *const addr, int *ualen, int tlen)
{
    int result;
    fd_set ss;
    struct timeval tv;
 
    if (tlen < 0) {
        errno = 0;
        for (;;) {
            *ualen = (int) sizeof(struct sockaddr_un);
            result = accept(sfd, (struct sockaddr *) addr, (int *) ualen);
            if ((result >= 0) || (errno != EINTR))
                return (result);
        }
    }
 
    for (;;) {
        errno = 0;
        FD_ZERO(&ss);
        FD_SET(sfd, &ss);
        tv.tv_sec = tlen;
        tv.tv_usec = 0;
        result = select(sfd + 1, SELECT_TYPE_ARG234 &ss, NULL, NULL, &tv);
        if (result == 1) {
            /* ready */
            break;
        } else if (result == 0) {
            /* timeout */
            errno = ETIMEDOUT;
            return (kTimeoutErr);
        } else if (errno != EINTR) {
            return (-1);
        }
    }
 
    do {
        *ualen = (int) sizeof(struct sockaddr_un);
        result = accept(sfd, (struct sockaddr *) addr, (int *) ualen);
    } while ((result < 0) && (errno == EINTR));
 
    return (result);
}   /* UAcceptS */
 
#endif