sanity.bbclass: Add check for problematic /proc/sys/vm/mmap_min_addr values

commit 4293a82a6425a2baa39e26d18c1285b092c31254
Author: Richard Purdie <rpurdie@rpsys.net>
Date:   Wed May 7 09:39:08 2008 +0000

    sanity.bbclass: Add check for problematic /proc/sys/vm/mmap_min_addr values

1 files changed, 6 insertions, 0 deletions

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 3368a062ac..e2fac2cc83 100644
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -96,6 +96,12 @@ def check_sanity(e):
                 if not check_app_exists("qemu-arm", e.data):
                         messages = messages + "qemu-native was in ASSUME_PROVIDED but the QEMU binaries (qemu-arm) can't be found in PATH"
 
+        if os.path.exists("/proc/sys/vm/mmap_min_addr"):
+                f = file("/proc/sys/vm/mmap_min_addr", "r")
+                if (f.read().strip() != "0"):
+                        messages = messages + "/proc/sys/vm/mmap_min_addr is not 0. This will cause problems with qemu so please fix the value (as root).\n\nTo fix this in later reboots, set vm.mmap_min_addr = 0 in /etc/sysctl.conf.\n"
+                f.close()
+
         for util in required_utilities.split():
                 if not check_app_exists( util, e.data ):
                         missing = missing + "%s," % util