mirror of
https://github.com/reactos/reactos.git
synced 2024-11-09 16:20:37 +00:00
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
#include "syshdrs.h"
|
|
|
|
#if !defined(NO_UNIX_DOMAIN_SOCKETS) && !defined(NO_SIGNALS)
|
|
|
|
extern volatile Sjmp_buf gNetTimeoutJmp;
|
|
extern volatile Sjmp_buf gPipeJmp;
|
|
|
|
int
|
|
URecvfrom(int sfd, char *const buf, size_t size, int fl, struct sockaddr_un *const fromAddr, int *ualen, int tlen)
|
|
{
|
|
int nread, tleft;
|
|
vsio_sigproc_t sigalrm, sigpipe;
|
|
time_t done, now;
|
|
|
|
if (SSetjmp(gNetTimeoutJmp) != 0) {
|
|
alarm(0);
|
|
(void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
|
|
(void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
|
|
errno = ETIMEDOUT;
|
|
return (kTimeoutErr);
|
|
}
|
|
|
|
if (SSetjmp(gPipeJmp) != 0) {
|
|
alarm(0);
|
|
(void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
|
|
(void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
|
|
errno = EPIPE;
|
|
return (kBrokenPipeErr);
|
|
}
|
|
|
|
sigalrm = (vsio_sigproc_t) SSignal(SIGALRM, SIOHandler);
|
|
sigpipe = (vsio_sigproc_t) SSignal(SIGPIPE, SIOHandler);
|
|
|
|
time(&now);
|
|
done = now + tlen;
|
|
tleft = (int) (done - now);
|
|
forever {
|
|
*ualen = sizeof(struct sockaddr_un);
|
|
(void) alarm((unsigned int) tleft);
|
|
nread = recvfrom(sfd, buf, size, fl,
|
|
(struct sockaddr *) fromAddr, ualen);
|
|
(void) alarm(0);
|
|
if (nread >= 0)
|
|
break;
|
|
if (errno != EINTR)
|
|
break; /* Fatal error. */
|
|
errno = 0;
|
|
time(&now);
|
|
tleft = (int) (done - now);
|
|
if (tleft < 1) {
|
|
nread = kTimeoutErr;
|
|
errno = ETIMEDOUT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
(void) SSignal(SIGALRM, (sio_sigproc_t) sigalrm);
|
|
(void) SSignal(SIGPIPE, (sio_sigproc_t) sigpipe);
|
|
|
|
return (nread);
|
|
} /* URecvfrom */
|
|
|
|
#endif
|