Gecko [ paroquia-rio-de-mouro.pt ]

Name	Size	Permission	Date
android	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
byteorder	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
caif	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
can	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
dvb	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
hdlc	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
hsi	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
iio	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
isdn	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
mmc	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
netfilter	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
netfilter_arp	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
netfilter_bridge	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
netfilter_ipv4	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
netfilter_ipv6	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
nfsd	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
raid	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
spi	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
sunrpc	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
tc_act	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
tc_ematch	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
usb	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
wimax	[ DIR ]	drwxr-xr-x	2021-04-21 07:31
a.out.h	7.15 KB	-rw-r--r--	2021-04-16 13:31
acct.h	3.58 KB	-rw-r--r--	2021-04-16 13:31
adb.h	1.05 KB	-rw-r--r--	2021-04-16 13:31
adfs_fs.h	873 B	-rw-r--r--	2021-04-16 13:31
affs_hardblocks.h	1.45 KB	-rw-r--r--	2021-04-16 13:31
agpgart.h	3.83 KB	-rw-r--r--	2021-04-16 13:31
aio_abi.h	3.1 KB	-rw-r--r--	2021-04-16 13:31
am437x-vpfe.h	3.53 KB	-rw-r--r--	2021-04-16 13:31
apm_bios.h	3.53 KB	-rw-r--r--	2021-04-16 13:31
arcfb.h	150 B	-rw-r--r--	2021-04-16 13:31
atalk.h	960 B	-rw-r--r--	2021-04-16 13:31
atm.h	7.64 KB	-rw-r--r--	2021-04-16 13:31
atm_eni.h	585 B	-rw-r--r--	2021-04-16 13:31
atm_he.h	343 B	-rw-r--r--	2021-04-16 13:31
atm_idt77105.h	892 B	-rw-r--r--	2021-04-16 13:31
atm_nicstar.h	1.19 KB	-rw-r--r--	2021-04-16 13:31
atm_tcp.h	1.52 KB	-rw-r--r--	2021-04-16 13:31
atm_zatm.h	1.44 KB	-rw-r--r--	2021-04-16 13:31
atmapi.h	889 B	-rw-r--r--	2021-04-16 13:31
atmarp.h	1.2 KB	-rw-r--r--	2021-04-16 13:31
atmbr2684.h	3.13 KB	-rw-r--r--	2021-04-16 13:31
atmclip.h	513 B	-rw-r--r--	2021-04-16 13:31
atmdev.h	7.44 KB	-rw-r--r--	2021-04-16 13:31
atmioc.h	1.55 KB	-rw-r--r--	2021-04-16 13:31
atmlec.h	2.26 KB	-rw-r--r--	2021-04-16 13:31
atmmpc.h	4.07 KB	-rw-r--r--	2021-04-16 13:31
atmppp.h	576 B	-rw-r--r--	2021-04-16 13:31
atmsap.h	4.79 KB	-rw-r--r--	2021-04-16 13:31
atmsvc.h	1.75 KB	-rw-r--r--	2021-04-16 13:31
audit.h	18.2 KB	-rw-r--r--	2021-04-16 13:31
aufs_type.h	10.35 KB	-rw-r--r--	2021-04-16 13:31
auto_fs.h	2.23 KB	-rw-r--r--	2021-04-16 13:31
auto_fs4.h	4.03 KB	-rw-r--r--	2021-04-16 13:31
auxvec.h	1.4 KB	-rw-r--r--	2021-04-16 13:31
ax25.h	2.7 KB	-rw-r--r--	2021-04-16 13:31
b1lli.h	1.62 KB	-rw-r--r--	2021-04-16 13:31
baycom.h	820 B	-rw-r--r--	2021-04-16 13:31
bcm933xx_hcs.h	356 B	-rw-r--r--	2021-04-16 13:31
bfs_fs.h	1.79 KB	-rw-r--r--	2021-04-16 13:31
binfmts.h	565 B	-rw-r--r--	2021-04-16 13:31
blkpg.h	1.53 KB	-rw-r--r--	2021-04-16 13:31
blktrace_api.h	4.38 KB	-rw-r--r--	2021-04-16 13:31
bpf.h	8.22 KB	-rw-r--r--	2021-04-16 13:31
bpf_common.h	1.2 KB	-rw-r--r--	2021-04-16 13:31
bpqether.h	952 B	-rw-r--r--	2021-04-16 13:31
bsg.h	2.37 KB	-rw-r--r--	2021-04-16 13:31
btrfs.h	20.16 KB	-rw-r--r--	2021-04-16 13:31
can.h	7.62 KB	-rw-r--r--	2021-04-16 13:31
capability.h	11.46 KB	-rw-r--r--	2021-04-16 13:31
capi.h	2.99 KB	-rw-r--r--	2021-04-16 13:31
cciss_defs.h	3.14 KB	-rw-r--r--	2021-04-16 13:31
cciss_ioctl.h	2.63 KB	-rw-r--r--	2021-04-16 13:31
cdrom.h	28.12 KB	-rw-r--r--	2021-04-16 13:31
cgroupstats.h	2.1 KB	-rw-r--r--	2021-04-16 13:31
chio.h	5.16 KB	-rw-r--r--	2021-04-16 13:31
cm4000_cs.h	1.7 KB	-rw-r--r--	2021-04-16 13:31
cn_proc.h	3.19 KB	-rw-r--r--	2021-04-16 13:31
coda.h	17.09 KB	-rw-r--r--	2021-04-16 13:31
coda_psdev.h	297 B	-rw-r--r--	2021-04-16 13:31
coff.h	12.12 KB	-rw-r--r--	2021-04-16 13:31
connector.h	2.14 KB	-rw-r--r--	2021-04-16 13:31
const.h	872 B	-rw-r--r--	2021-04-16 13:31
cramfs_fs.h	2.68 KB	-rw-r--r--	2021-04-16 13:31
cuda.h	842 B	-rw-r--r--	2021-04-16 13:31
cyclades.h	16.65 KB	-rw-r--r--	2021-04-16 13:31
cycx_cfm.h	2.86 KB	-rw-r--r--	2021-04-16 13:31
dcbnl.h	24.27 KB	-rw-r--r--	2021-04-16 13:31
dccp.h	6.22 KB	-rw-r--r--	2021-04-16 13:31
dlm.h	2.43 KB	-rw-r--r--	2021-04-16 13:31
dlm_device.h	2.42 KB	-rw-r--r--	2021-04-16 13:31
dlm_netlink.h	1.04 KB	-rw-r--r--	2021-04-16 13:31
dlm_plock.h	831 B	-rw-r--r--	2021-04-16 13:31
dlmconstants.h	4.9 KB	-rw-r--r--	2021-04-16 13:31
dm-ioctl.h	10.45 KB	-rw-r--r--	2021-04-16 13:31
dm-log-userspace.h	14.82 KB	-rw-r--r--	2021-04-16 13:31
dn.h	4.47 KB	-rw-r--r--	2021-04-16 13:31
dqblk_xfs.h	8.65 KB	-rw-r--r--	2021-04-16 13:31
edd.h	5.41 KB	-rw-r--r--	2021-04-16 13:31
efs_fs_sb.h	2.11 KB	-rw-r--r--	2021-04-16 13:31
elf-em.h	2.17 KB	-rw-r--r--	2021-04-16 13:31
elf-fdpic.h	1.04 KB	-rw-r--r--	2021-04-16 13:31
elf.h	11.64 KB	-rw-r--r--	2021-04-16 13:31
elfcore.h	2.86 KB	-rw-r--r--	2021-04-16 13:31
errno.h	23 B	-rw-r--r--	2021-04-16 13:31
errqueue.h	1.21 KB	-rw-r--r--	2021-04-16 13:31
ethtool.h	64.1 KB	-rw-r--r--	2021-04-16 13:31
eventpoll.h	2.32 KB	-rw-r--r--	2021-04-16 13:31
fadvise.h	779 B	-rw-r--r--	2021-04-16 13:31
falloc.h	2.72 KB	-rw-r--r--	2021-04-16 13:31
fanotify.h	3.42 KB	-rw-r--r--	2021-04-16 13:31
fb.h	16 KB	-rw-r--r--	2021-04-16 13:31
fcntl.h	2.16 KB	-rw-r--r--	2021-04-16 13:31
fd.h	11.34 KB	-rw-r--r--	2021-04-16 13:31
fdreg.h	5.23 KB	-rw-r--r--	2021-04-16 13:31
fib_rules.h	1.58 KB	-rw-r--r--	2021-04-16 13:31
fiemap.h	2.65 KB	-rw-r--r--	2021-04-16 13:31
filter.h	2.1 KB	-rw-r--r--	2021-04-16 13:31
firewire-cdev.h	42.86 KB	-rw-r--r--	2021-04-16 13:31
firewire-constants.h	3.16 KB	-rw-r--r--	2021-04-16 13:31
flat.h	2.04 KB	-rw-r--r--	2021-04-16 13:31
fou.h	631 B	-rw-r--r--	2021-04-16 13:31
fs.h	8.21 KB	-rw-r--r--	2021-04-16 13:31
fsl_hypervisor.h	7.05 KB	-rw-r--r--	2021-04-16 13:31
fuse.h	16.34 KB	-rw-r--r--	2021-04-16 13:31
futex.h	4.81 KB	-rw-r--r--	2021-04-16 13:31
gameport.h	834 B	-rw-r--r--	2021-04-16 13:31
gen_stats.h	1.46 KB	-rw-r--r--	2021-04-16 13:31
genetlink.h	1.77 KB	-rw-r--r--	2021-04-16 13:31
gfs2_ondisk.h	11.91 KB	-rw-r--r--	2021-04-16 13:31
gigaset_dev.h	1.35 KB	-rw-r--r--	2021-04-16 13:31
gsmmux.h	978 B	-rw-r--r--	2021-04-16 13:31
hdlc.h	574 B	-rw-r--r--	2021-04-16 13:31
hdlcdrv.h	2.78 KB	-rw-r--r--	2021-04-16 13:31
hdreg.h	22.11 KB	-rw-r--r--	2021-04-16 13:31
hid.h	1.79 KB	-rw-r--r--	2021-04-16 13:31
hiddev.h	6.13 KB	-rw-r--r--	2021-04-16 13:31
hidraw.h	1.41 KB	-rw-r--r--	2021-04-16 13:31
hpet.h	680 B	-rw-r--r--	2021-04-16 13:31
hsr_netlink.h	1017 B	-rw-r--r--	2021-04-16 13:31
hw_breakpoint.h	575 B	-rw-r--r--	2021-04-16 13:31
hyperv.h	10.26 KB	-rw-r--r--	2021-04-16 13:31
hysdn_if.h	1.29 KB	-rw-r--r--	2021-04-16 13:31
i2c-dev.h	2.49 KB	-rw-r--r--	2021-04-16 13:31
i2c.h	6.65 KB	-rw-r--r--	2021-04-16 13:31
i2o-dev.h	11.22 KB	-rw-r--r--	2021-04-16 13:31
i8k.h	1.43 KB	-rw-r--r--	2021-04-16 13:31
icmp.h	2.82 KB	-rw-r--r--	2021-04-16 13:31
icmpv6.h	3.82 KB	-rw-r--r--	2021-04-16 13:31
if.h	10.45 KB	-rw-r--r--	2021-04-16 13:31
if_addr.h	1.7 KB	-rw-r--r--	2021-04-16 13:31
if_addrlabel.h	658 B	-rw-r--r--	2021-04-16 13:31
if_alg.h	882 B	-rw-r--r--	2021-04-16 13:31
if_arcnet.h	3.57 KB	-rw-r--r--	2021-04-16 13:31
if_arp.h	6.24 KB	-rw-r--r--	2021-04-16 13:31
if_bonding.h	4.11 KB	-rw-r--r--	2021-04-16 13:31
if_bridge.h	4.46 KB	-rw-r--r--	2021-04-16 13:31
if_cablemodem.h	922 B	-rw-r--r--	2021-04-16 13:31
if_eql.h	1.26 KB	-rw-r--r--	2021-04-16 13:31
if_ether.h	7.13 KB	-rw-r--r--	2021-04-16 13:31
if_fc.h	1.63 KB	-rw-r--r--	2021-04-16 13:31
if_fddi.h	3.6 KB	-rw-r--r--	2021-04-16 13:31
if_frad.h	2.89 KB	-rw-r--r--	2021-04-16 13:31
if_hippi.h	4.07 KB	-rw-r--r--	2021-04-16 13:31
if_infiniband.h	1.13 KB	-rw-r--r--	2021-04-16 13:31
if_link.h	16.74 KB	-rw-r--r--	2021-04-16 13:31
if_ltalk.h	147 B	-rw-r--r--	2021-04-16 13:31
if_packet.h	7.63 KB	-rw-r--r--	2021-04-16 13:31
if_phonet.h	361 B	-rw-r--r--	2021-04-16 13:31
if_plip.h	596 B	-rw-r--r--	2021-04-16 13:31
if_ppp.h	29 B	-rw-r--r--	2021-04-16 13:31
if_pppol2tp.h	3.11 KB	-rw-r--r--	2021-04-16 13:31
if_pppox.h	4.64 KB	-rw-r--r--	2021-04-16 13:31
if_slip.h	809 B	-rw-r--r--	2021-04-16 13:31
if_team.h	2.48 KB	-rw-r--r--	2021-04-16 13:31
if_tun.h	3.72 KB	-rw-r--r--	2021-04-16 13:31
if_tunnel.h	3.14 KB	-rw-r--r--	2021-04-16 13:31
if_vlan.h	1.69 KB	-rw-r--r--	2021-04-16 13:31
if_x25.h	817 B	-rw-r--r--	2021-04-16 13:31
igmp.h	2.88 KB	-rw-r--r--	2021-04-16 13:31
ila.h	220 B	-rw-r--r--	2021-04-16 13:31
in.h	9.38 KB	-rw-r--r--	2021-04-16 13:31
in6.h	7.08 KB	-rw-r--r--	2021-04-16 13:31
in_route.h	873 B	-rw-r--r--	2021-04-16 13:31
inet_diag.h	2.78 KB	-rw-r--r--	2021-04-16 13:31
inotify.h	2.85 KB	-rw-r--r--	2021-04-16 13:31
input-event-codes.h	22.72 KB	-rw-r--r--	2021-04-16 13:31
input.h	14.7 KB	-rw-r--r--	2021-04-16 13:31
ioctl.h	100 B	-rw-r--r--	2021-04-16 13:31
ip.h	4.45 KB	-rw-r--r--	2021-04-16 13:31
ip6_tunnel.h	1.67 KB	-rw-r--r--	2021-04-16 13:31
ip_vs.h	13.23 KB	-rw-r--r--	2021-04-16 13:31
ipc.h	1.99 KB	-rw-r--r--	2021-04-16 13:31
ipmi.h	15.8 KB	-rw-r--r--	2021-04-16 13:31
ipmi_msgdefs.h	4.37 KB	-rw-r--r--	2021-04-16 13:31
ipsec.h	884 B	-rw-r--r--	2021-04-16 13:31
ipv6.h	3.45 KB	-rw-r--r--	2021-04-16 13:31
ipv6_route.h	1.73 KB	-rw-r--r--	2021-04-16 13:31
ipx.h	1.79 KB	-rw-r--r--	2021-04-16 13:31
irda.h	7.31 KB	-rw-r--r--	2021-04-16 13:31
irqnr.h	104 B	-rw-r--r--	2021-04-16 13:31
isdn.h	5.58 KB	-rw-r--r--	2021-04-16 13:31
isdn_divertif.h	1.11 KB	-rw-r--r--	2021-04-16 13:31
isdn_ppp.h	1.82 KB	-rw-r--r--	2021-04-16 13:31
isdnif.h	2.25 KB	-rw-r--r--	2021-04-16 13:31
iso_fs.h	6.29 KB	-rw-r--r--	2021-04-16 13:31
ivtv.h	2.89 KB	-rw-r--r--	2021-04-16 13:31
ivtvfb.h	1.12 KB	-rw-r--r--	2021-04-16 13:31
ixjuser.h	24.53 KB	-rw-r--r--	2021-04-16 13:31
jffs2.h	6.85 KB	-rw-r--r--	2021-04-16 13:31
joystick.h	3.5 KB	-rw-r--r--	2021-04-16 13:31
kcmp.h	214 B	-rw-r--r--	2021-04-16 13:31
kd.h	6.07 KB	-rw-r--r--	2021-04-16 13:31
kdev_t.h	320 B	-rw-r--r--	2021-04-16 13:31
kernel-page-flags.h	814 B	-rw-r--r--	2021-04-16 13:31
kernel.h	315 B	-rw-r--r--	2021-04-16 13:31
kernelcapi.h	956 B	-rw-r--r--	2021-04-16 13:31
kexec.h	1.69 KB	-rw-r--r--	2021-04-16 13:31
keyboard.h	12.42 KB	-rw-r--r--	2021-04-16 13:31
keyctl.h	2.98 KB	-rw-r--r--	2021-04-16 13:31
kvm.h	36.02 KB	-rw-r--r--	2021-04-16 13:31
kvm_para.h	760 B	-rw-r--r--	2021-04-16 13:31
l2tp.h	5.4 KB	-rw-r--r--	2021-04-16 13:31
libc-compat.h	6.15 KB	-rw-r--r--	2021-04-16 13:31
limits.h	874 B	-rw-r--r--	2021-04-16 13:31
llc.h	2.98 KB	-rw-r--r--	2021-04-16 13:31
loop.h	2.36 KB	-rw-r--r--	2021-04-16 13:31
lp.h	3.72 KB	-rw-r--r--	2021-04-16 13:31
lwtunnel.h	774 B	-rw-r--r--	2021-04-16 13:31
magic.h	2.85 KB	-rw-r--r--	2021-04-16 13:31
major.h	4.53 KB	-rw-r--r--	2021-04-16 13:31
map_to_7segment.h	7.02 KB	-rw-r--r--	2021-04-16 13:31
matroxfb.h	1.37 KB	-rw-r--r--	2021-04-16 13:31
mdio.h	13.74 KB	-rw-r--r--	2021-04-16 13:31
media-bus-format.h	5.47 KB	-rw-r--r--	2021-04-16 13:31
media.h	4.98 KB	-rw-r--r--	2021-04-16 13:31
mei.h	4.62 KB	-rw-r--r--	2021-04-16 13:31
membarrier.h	2.38 KB	-rw-r--r--	2021-04-16 13:31
memfd.h	186 B	-rw-r--r--	2021-04-16 13:31
mempolicy.h	2.35 KB	-rw-r--r--	2021-04-16 13:31
meye.h	2.41 KB	-rw-r--r--	2021-04-16 13:31
mic_common.h	6.3 KB	-rw-r--r--	2021-04-16 13:31
mic_ioctl.h	2.14 KB	-rw-r--r--	2021-04-16 13:31
mii.h	7.76 KB	-rw-r--r--	2021-04-16 13:31
minix_fs.h	2.01 KB	-rw-r--r--	2021-04-16 13:31
mman.h	230 B	-rw-r--r--	2021-04-16 13:31
mmtimer.h	2.01 KB	-rw-r--r--	2021-04-16 13:31
mpls.h	1.38 KB	-rw-r--r--	2021-04-16 13:31
mpls_iptunnel.h	650 B	-rw-r--r--	2021-04-16 13:31
mqueue.h	2.06 KB	-rw-r--r--	2021-04-16 13:31
mroute.h	4.12 KB	-rw-r--r--	2021-04-16 13:31
mroute6.h	4.19 KB	-rw-r--r--	2021-04-16 13:31
msdos_fs.h	6.74 KB	-rw-r--r--	2021-04-16 13:31
msg.h	3.21 KB	-rw-r--r--	2021-04-16 13:31
mtio.h	7.92 KB	-rw-r--r--	2021-04-16 13:31
n_r3964.h	2.29 KB	-rw-r--r--	2021-04-16 13:31
nbd.h	2.3 KB	-rw-r--r--	2021-04-16 13:31
ncp.h	4.94 KB	-rw-r--r--	2021-04-16 13:31
ncp_fs.h	3.27 KB	-rw-r--r--	2021-04-16 13:31
ncp_mount.h	2.06 KB	-rw-r--r--	2021-04-16 13:31
ncp_no.h	651 B	-rw-r--r--	2021-04-16 13:31
ndctl.h	5.13 KB	-rw-r--r--	2021-04-16 13:31
neighbour.h	4.11 KB	-rw-r--r--	2021-04-16 13:31
net.h	1.97 KB	-rw-r--r--	2021-04-16 13:31
net_dropmon.h	1.07 KB	-rw-r--r--	2021-04-16 13:31
net_namespace.h	609 B	-rw-r--r--	2021-04-16 13:31
net_tstamp.h	3.55 KB	-rw-r--r--	2021-04-16 13:31
netconf.h	485 B	-rw-r--r--	2021-04-16 13:31
netdevice.h	2.14 KB	-rw-r--r--	2021-04-16 13:31
netfilter.h	1.69 KB	-rw-r--r--	2021-04-16 13:31
netfilter_arp.h	380 B	-rw-r--r--	2021-04-16 13:31
netfilter_bridge.h	768 B	-rw-r--r--	2021-04-16 13:31
netfilter_decnet.h	1.83 KB	-rw-r--r--	2021-04-16 13:31
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Rename

/*
 * Copyright (C) 2006-2009 Red Hat, Inc.
 *
 * This file is released under the LGPL.
 */

#ifndef __DM_LOG_USERSPACE_H__
#define __DM_LOG_USERSPACE_H__

#include <linux/dm-ioctl.h> /* For DM_UUID_LEN */

/*
 * The device-mapper userspace log module consists of a kernel component and
 * a user-space component.  The kernel component implements the API defined
 * in dm-dirty-log.h.  Its purpose is simply to pass the parameters and
 * return values of those API functions between kernel and user-space.
 *
 * Below are defined the 'request_types' - DM_ULOG_CTR, DM_ULOG_DTR, etc.
 * These request types represent the different functions in the device-mapper
 * dirty log API.  Each of these is described in more detail below.
 *
 * The user-space program must listen for requests from the kernel (representing
 * the various API functions) and process them.
 *
 * User-space begins by setting up the communication link (error checking
 * removed for clarity):
 *	fd = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR);
 *	addr.nl_family = AF_NETLINK;
 *	addr.nl_groups = CN_IDX_DM;
 *	addr.nl_pid = 0;
 *	r = bind(fd, (struct sockaddr *) &addr, sizeof(addr));
 *	opt = addr.nl_groups;
 *	setsockopt(fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &opt, sizeof(opt));
 *
 * User-space will then wait to receive requests form the kernel, which it
 * will process as described below.  The requests are received in the form,
 * ((struct dm_ulog_request) + (additional data)).  Depending on the request
 * type, there may or may not be 'additional data'.  In the descriptions below,
 * you will see 'Payload-to-userspace' and 'Payload-to-kernel'.  The
 * 'Payload-to-userspace' is what the kernel sends in 'additional data' as
 * necessary parameters to complete the request.  The 'Payload-to-kernel' is
 * the 'additional data' returned to the kernel that contains the necessary
 * results of the request.  The 'data_size' field in the dm_ulog_request
 * structure denotes the availability and amount of payload data.
 */

/*
 * DM_ULOG_CTR corresponds to (found in dm-dirty-log.h):
 * int (*ctr)(struct dm_dirty_log *log, struct dm_target *ti,
 *	      unsigned argc, char **argv);
 *
 * Payload-to-userspace:
 *	A single string containing all the argv arguments separated by ' 's
 * Payload-to-kernel:
 *	A NUL-terminated string that is the name of the device that is used
 *	as the backing store for the log data.  'dm_get_device' will be called
 *	on this device.  ('dm_put_device' will be called on this device
 *	automatically after calling DM_ULOG_DTR.)  If there is no device needed
 *	for log data, 'data_size' in the dm_ulog_request struct should be 0.
 *
 * The UUID contained in the dm_ulog_request structure is the reference that
 * will be used by all request types to a specific log.  The constructor must
 * record this association with the instance created.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field, filling the
 * data field with the log device if necessary, and setting 'data_size'
 * appropriately.
 */
#define DM_ULOG_CTR                    1

/*
 * DM_ULOG_DTR corresponds to (found in dm-dirty-log.h):
 * void (*dtr)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	A single string containing all the argv arguments separated by ' 's
 * Payload-to-kernel:
 *	None.  ('data_size' in the dm_ulog_request struct should be 0.)
 *
 * The UUID contained in the dm_ulog_request structure is all that is
 * necessary to identify the log instance being destroyed.  There is no
 * payload data.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and clearing
 * 'data_size' appropriately.
 */
#define DM_ULOG_DTR                    2

/*
 * DM_ULOG_PRESUSPEND corresponds to (found in dm-dirty-log.h):
 * int (*presuspend)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	None.
 *
 * The UUID contained in the dm_ulog_request structure is all that is
 * necessary to identify the log instance being presuspended.  There is no
 * payload data.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_PRESUSPEND             3

/*
 * DM_ULOG_POSTSUSPEND corresponds to (found in dm-dirty-log.h):
 * int (*postsuspend)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	None.
 *
 * The UUID contained in the dm_ulog_request structure is all that is
 * necessary to identify the log instance being postsuspended.  There is no
 * payload data.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_POSTSUSPEND            4

/*
 * DM_ULOG_RESUME corresponds to (found in dm-dirty-log.h):
 * int (*resume)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	None.
 *
 * The UUID contained in the dm_ulog_request structure is all that is
 * necessary to identify the log instance being resumed.  There is no
 * payload data.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_RESUME                 5

/*
 * DM_ULOG_GET_REGION_SIZE corresponds to (found in dm-dirty-log.h):
 * uint32_t (*get_region_size)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	uint64_t - contains the region size
 *
 * The region size is something that was determined at constructor time.
 * It is returned in the payload area and 'data_size' is set to
 * reflect this.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field appropriately.
 */
#define DM_ULOG_GET_REGION_SIZE        6

/*
 * DM_ULOG_IS_CLEAN corresponds to (found in dm-dirty-log.h):
 * int (*is_clean)(struct dm_dirty_log *log, region_t region);
 *
 * Payload-to-userspace:
 *	uint64_t - the region to get clean status on
 * Payload-to-kernel:
 *	int64_t  - 1 if clean, 0 otherwise
 *
 * Payload is sizeof(uint64_t) and contains the region for which the clean
 * status is being made.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - filling the payload with 0 (not clean) or
 * 1 (clean), setting 'data_size' and 'error' appropriately.
 */
#define DM_ULOG_IS_CLEAN               7

/*
 * DM_ULOG_IN_SYNC corresponds to (found in dm-dirty-log.h):
 * int (*in_sync)(struct dm_dirty_log *log, region_t region,
 *		  int can_block);
 *
 * Payload-to-userspace:
 *	uint64_t - the region to get sync status on
 * Payload-to-kernel:
 *	int64_t - 1 if in-sync, 0 otherwise
 *
 * Exactly the same as 'is_clean' above, except this time asking "has the
 * region been recovered?" vs. "is the region not being modified?"
 */
#define DM_ULOG_IN_SYNC                8

/*
 * DM_ULOG_FLUSH corresponds to (found in dm-dirty-log.h):
 * int (*flush)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	If the 'integrated_flush' directive is present in the constructor
 *	table, the payload is as same as DM_ULOG_MARK_REGION:
 *		uint64_t [] - region(s) to mark
 *	else
 *		None
 * Payload-to-kernel:
 *	None.
 *
 * If the 'integrated_flush' option was used during the creation of the
 * log, mark region requests are carried as payload in the flush request.
 * Piggybacking the mark requests in this way allows for fewer communications
 * between kernel and userspace.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and clearing
 * 'data_size' appropriately.
 */
#define DM_ULOG_FLUSH                  9

/*
 * DM_ULOG_MARK_REGION corresponds to (found in dm-dirty-log.h):
 * void (*mark_region)(struct dm_dirty_log *log, region_t region);
 *
 * Payload-to-userspace:
 *	uint64_t [] - region(s) to mark
 * Payload-to-kernel:
 *	None.
 *
 * Incoming payload contains the one or more regions to mark dirty.
 * The number of regions contained in the payload can be determined from
 * 'data_size/sizeof(uint64_t)'.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and clearing
 * 'data_size' appropriately.
 */
#define DM_ULOG_MARK_REGION           10

/*
 * DM_ULOG_CLEAR_REGION corresponds to (found in dm-dirty-log.h):
 * void (*clear_region)(struct dm_dirty_log *log, region_t region);
 *
 * Payload-to-userspace:
 *	uint64_t [] - region(s) to clear
 * Payload-to-kernel:
 *	None.
 *
 * Incoming payload contains the one or more regions to mark clean.
 * The number of regions contained in the payload can be determined from
 * 'data_size/sizeof(uint64_t)'.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and clearing
 * 'data_size' appropriately.
 */
#define DM_ULOG_CLEAR_REGION          11

/*
 * DM_ULOG_GET_RESYNC_WORK corresponds to (found in dm-dirty-log.h):
 * int (*get_resync_work)(struct dm_dirty_log *log, region_t *region);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	{
 *		int64_t i; -- 1 if recovery necessary, 0 otherwise
 *		uint64_t r; -- The region to recover if i=1
 *	}
 * 'data_size' should be set appropriately.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field appropriately.
 */
#define DM_ULOG_GET_RESYNC_WORK       12

/*
 * DM_ULOG_SET_REGION_SYNC corresponds to (found in dm-dirty-log.h):
 * void (*set_region_sync)(struct dm_dirty_log *log,
 *			   region_t region, int in_sync);
 *
 * Payload-to-userspace:
 *	{
 *		uint64_t - region to set sync state on
 *		int64_t  - 0 if not-in-sync, 1 if in-sync
 *	}
 * Payload-to-kernel:
 *	None.
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and clearing
 * 'data_size' appropriately.
 */
#define DM_ULOG_SET_REGION_SYNC       13

/*
 * DM_ULOG_GET_SYNC_COUNT corresponds to (found in dm-dirty-log.h):
 * region_t (*get_sync_count)(struct dm_dirty_log *log);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	uint64_t - the number of in-sync regions
 *
 * No incoming payload.  Kernel-bound payload contains the number of
 * regions that are in-sync (in a size_t).
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_GET_SYNC_COUNT        14

/*
 * DM_ULOG_STATUS_INFO corresponds to (found in dm-dirty-log.h):
 * int (*status)(struct dm_dirty_log *log, STATUSTYPE_INFO,
 *		 char *result, unsigned maxlen);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	Character string containing STATUSTYPE_INFO
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_STATUS_INFO           15

/*
 * DM_ULOG_STATUS_TABLE corresponds to (found in dm-dirty-log.h):
 * int (*status)(struct dm_dirty_log *log, STATUSTYPE_TABLE,
 *		 char *result, unsigned maxlen);
 *
 * Payload-to-userspace:
 *	None.
 * Payload-to-kernel:
 *	Character string containing STATUSTYPE_TABLE
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_STATUS_TABLE          16

/*
 * DM_ULOG_IS_REMOTE_RECOVERING corresponds to (found in dm-dirty-log.h):
 * int (*is_remote_recovering)(struct dm_dirty_log *log, region_t region);
 *
 * Payload-to-userspace:
 *	uint64_t - region to determine recovery status on
 * Payload-to-kernel:
 *	{
 *		int64_t is_recovering;  -- 0 if no, 1 if yes
 *		uint64_t in_sync_hint;  -- lowest region still needing resync
 *	}
 *
 * When the request has been processed, user-space must return the
 * dm_ulog_request to the kernel - setting the 'error' field and
 * 'data_size' appropriately.
 */
#define DM_ULOG_IS_REMOTE_RECOVERING  17

/*
 * (DM_ULOG_REQUEST_MASK & request_type) to get the request type
 *
 * Payload-to-userspace:
 *	A single string containing all the argv arguments separated by ' 's
 * Payload-to-kernel:
 *	None.  ('data_size' in the dm_ulog_request struct should be 0.)
 *
 * We are reserving 8 bits of the 32-bit 'request_type' field for the
 * various request types above.  The remaining 24-bits are currently
 * set to zero and are reserved for future use and compatibility concerns.
 *
 * User-space should always use DM_ULOG_REQUEST_TYPE to acquire the
 * request type from the 'request_type' field to maintain forward compatibility.
 */
#define DM_ULOG_REQUEST_MASK 0xFF
#define DM_ULOG_REQUEST_TYPE(request_type) \
	(DM_ULOG_REQUEST_MASK & (request_type))

/*
 * DM_ULOG_REQUEST_VERSION is incremented when there is a
 * change to the way information is passed between kernel
 * and userspace.  This could be a structure change of
 * dm_ulog_request or a change in the way requests are
 * issued/handled.  Changes are outlined here:
 *	version 1:  Initial implementation
 *	version 2:  DM_ULOG_CTR allowed to return a string containing a
 *	            device name that is to be registered with DM via
 *	            'dm_get_device'.
 *	version 3:  DM_ULOG_FLUSH is capable of carrying payload for marking
 *		    regions.  This "integrated flush" reduces the number of
 *		    requests between the kernel and userspace by effectively
 *		    merging 'mark' and 'flush' requests.  A constructor table
 *		    argument ('integrated_flush') is required to turn this
 *		    feature on, so it is backwards compatible with older
 *		    userspace versions.
 */
#define DM_ULOG_REQUEST_VERSION 3

struct dm_ulog_request {
	/*
	 * The local unique identifier (luid) and the universally unique
	 * identifier (uuid) are used to tie a request to a specific
	 * mirror log.  A single machine log could probably make due with
	 * just the 'luid', but a cluster-aware log must use the 'uuid' and
	 * the 'luid'.  The uuid is what is required for node to node
	 * communication concerning a particular log, but the 'luid' helps
	 * differentiate between logs that are being swapped and have the
	 * same 'uuid'.  (Think "live" and "inactive" device-mapper tables.)
	 */
	uint64_t luid;
	char uuid[DM_UUID_LEN];
	char padding[3];        /* Padding because DM_UUID_LEN = 129 */

uint32_t version;       /* See DM_ULOG_REQUEST_VERSION */
	int32_t error;          /* Used to report back processing errors */

uint32_t seq;           /* Sequence number for request */
	uint32_t request_type;  /* DM_ULOG_* defined above */
	uint32_t data_size;     /* How much data (not including this struct) */

char data[0];
};

#endif /* __DM_LOG_USERSPACE_H__ */