cups/cups-sidechannel-intrs.patch

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diff -up cups-1.4.2/cups/sidechannel.c.sidechannel-intrs cups-1.4.2/cups/sidechannel.c
--- cups-1.4.2/cups/sidechannel.c.sidechannel-intrs 2009-09-23 00:20:35.000000000 +0100
+++ cups-1.4.2/cups/sidechannel.c 2009-12-08 11:08:15.297539377 +0000
@@ -116,6 +116,7 @@ cupsSideChannelRead(
char buffer[16388]; /* Message buffer */
int bytes; /* Bytes read */
int templen; /* Data length from message */
+ int nfds; /* Number of file descriptors */
#ifdef HAVE_POLL
struct pollfd pfd; /* Poll structure for poll() */
#else /* select() */
@@ -143,39 +144,31 @@ cupsSideChannelRead(
pfd.fd = CUPS_SC_FD;
pfd.events = POLLIN;
- if (timeout < 0.0)
- {
- if (poll(&pfd, 1, -1) < 1)
- return (-1);
- }
- else if (poll(&pfd, 1, (long)(timeout * 1000)) < 1)
- return (-1);
+ while ((nfds = poll(&pfd, 1,
+ timeout < 0.0 ? -1 : (long)(timeout * 1000))) < 0 &&
+ (errno == EINTR || errno == EAGAIN))
+ ;
#else /* select() */
FD_ZERO(&input_set);
FD_SET(CUPS_SC_FD, &input_set);
- if (timeout < 0.0)
- {
- if (select(CUPS_SC_FD + 1, &input_set, NULL, NULL, NULL) < 1)
- {
- DEBUG_printf(("1cupsSideChannelRead: Select error: %s", strerror(errno)));
- return (-1);
- }
- }
- else
- {
- stimeout.tv_sec = (int)timeout;
- stimeout.tv_usec = (int)(timeout * 1000000) % 1000000;
+ stimeout.tv_sec = (int)timeout;
+ stimeout.tv_usec = (int)(timeout * 1000000) % 1000000;
+
+ while ((nfds = select(CUPS_SC_FD + 1, &input_set, NULL, NULL,
+ timeout < 0.0 ? NULL : &stimeout)) < 0 &&
+ (errno == EINTR || errno == EAGAIN))
+ ;
- if (select(CUPS_SC_FD + 1, &input_set, NULL, NULL, &stimeout) < 1)
- {
- DEBUG_puts("1cupsSideChannelRead: Select timeout");
- return (-1);
- }
- }
#endif /* HAVE_POLL */
+ if (nfds < 1)
+ {
+ *status = nfds==0 ? CUPS_SC_STATUS_TIMEOUT : CUPS_SC_STATUS_IO_ERROR;
+ return (-1);
+ }
+
/*
* Read a side-channel message for the format:
*