Blame SOURCES/0229-RHBZ-1467987-poll-on-udev-monitor.patch
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libmultipath/uevent.c | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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Index: multipath-tools-130222/libmultipath/uevent.c
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===================================================================
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--- multipath-tools-130222.orig/libmultipath/uevent.c
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+++ multipath-tools-130222/libmultipath/uevent.c
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@@ -41,6 +41,7 @@
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#include <sys/mman.h>
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#include <libudev.h>
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#include <errno.h>
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+#include <poll.h>
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#include "memory.h"
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#include "debug.h"
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@@ -460,6 +461,21 @@ int uevent_listen(struct udev *udev)
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struct uevent *uev;
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struct udev_device *dev;
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struct udev_list_entry *list_entry;
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+ struct pollfd ev_poll;
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+ int fdcount;
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+
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+ memset(&ev_poll, 0, sizeof(struct pollfd));
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+ ev_poll.fd = fd;
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+ ev_poll.events = POLLIN;
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+ errno = 0;
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+ fdcount = poll(&ev_poll, 1, -1);
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+ if (fdcount <= 0 || !(ev_poll.revents & POLLIN)) {
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+ if (!errno || errno == EINTR)
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+ continue;
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+ condlog(0, "error receiving uevent message");
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+ err = -errno;
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+ break;
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+ }
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dev = udev_monitor_receive_device(monitor);
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if (!dev) {
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