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authorDavid Howells <dhowells@redhat.com>2020-01-14 20:07:11 +0300
committerDavid Howells <dhowells@redhat.com>2020-05-19 17:38:07 +0300
commitf5b5a164f9a11aab5b225f082b33a8f03c07516c (patch)
tree2e8495c9715765006985d2309312bcf2db0f462d /samples/Makefile
parentf7e47677e39a03057dcced2016c92a9c868693ec (diff)
downloadlinux-f5b5a164f9a11aab5b225f082b33a8f03c07516c.tar.xz
Add sample notification program
The sample program is run like: ./samples/watch_queue/watch_test and watches "/" for mount changes and the current session keyring for key changes: # keyctl add user a a @s 1035096409 # keyctl unlink 1035096409 @s producing: # ./watch_test read() = 16 NOTIFY[000]: ty=000001 sy=02 i=00000110 KEY 2ffc2e5d change=2[linked] aux=1035096409 read() = 16 NOTIFY[000]: ty=000001 sy=02 i=00000110 KEY 2ffc2e5d change=3[unlinked] aux=1035096409 Other events may be produced, such as with a failing disk: read() = 22 NOTIFY[000]: ty=000003 sy=02 i=00000416 USB 3-7.7 dev-reset e=0 r=0 read() = 24 NOTIFY[000]: ty=000002 sy=06 i=00000418 BLOCK 00800050 e=6[critical medium] s=64000ef8 This corresponds to: blk_update_request: critical medium error, dev sdf, sector 1677725432 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 in dmesg. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'samples/Makefile')
-rw-r--r--samples/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/samples/Makefile b/samples/Makefile
index f8f847b4f61f..8617edf7f19a 100644
--- a/samples/Makefile
+++ b/samples/Makefile
@@ -24,3 +24,4 @@ obj-$(CONFIG_VIDEO_PCI_SKELETON) += v4l/
obj-y += vfio-mdev/
subdir-$(CONFIG_SAMPLE_VFS) += vfs
obj-$(CONFIG_SAMPLE_INTEL_MEI) += mei/
+subdir-$(CONFIG_SAMPLE_WATCH_QUEUE) += watch_queue