On Wed, Jan 15, 2020 at 01:31:38PM +0000, David Howells wrote: > 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@xxxxxxxxxx> mips:allmodconfig: samples/watch_queue/watch_test.c: In function ‘keyctl_watch_key’: samples/watch_queue/watch_test.c:34:17: error: ‘__NR_keyctl’ undeclared Guenter
