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[libvirt] [PATCH] udev: Fix build on older platforms



Caused by commit @d1eea6c1 due to the missing symbol on older platforms.

Signed-off-by: Erik Skultety <eskultet redhat com>
---
Despite falling under build-breaker category, I'd like to get a proper review,
since I'm not really familiar with autoconf and there might be a better fix.

Erik

 configure.ac                       | 2 +-
 src/node_device/node_device_udev.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 246f4e077..b78c8b790 100644
--- a/configure.ac
+++ b/configure.ac
@@ -322,7 +322,7 @@ AC_CHECK_FUNCS_ONCE([cfmakeraw fallocate geteuid getgid getgrnam_r \
   getmntent_r getpwuid_r getrlimit getuid if_indextoname kill mmap \
   newlocale posix_fallocate posix_memalign prlimit regexec \
   sched_getaffinity setgroups setns setrlimit symlink sysctlbyname \
-  getifaddrs sched_setscheduler unshare])
+  getifaddrs sched_setscheduler unshare udev_monitor_set_receive_buffer_size])

 dnl Availability of various common headers (non-fatal if missing).
 AC_CHECK_HEADERS([pwd.h regex.h sys/un.h \
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index a69dc1175..01438ea17 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1764,12 +1764,14 @@ static int nodeStateInitialize(bool privileged,

     udev_monitor_enable_receiving(priv->udev_monitor);

+#if HAVE_UDEV_MONITOR_SET_RECEIVE_BUFFER_SIZE
     /* mimic udevd's behaviour and override the systems rmem_max limit in case
      * there's a significant number of device 'add' events
      */
     if (geteuid() == 0)
         udev_monitor_set_receive_buffer_size(priv->udev_monitor,
                                              128 * 1024 * 1024);
+#endif

     /* We register the monitor with the event callback so we are
      * notified by udev of device changes before we enumerate existing
--
2.13.0


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