Gecko [ www.foryou-vip.com ]

Name	Size	Permission	Date
android	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
byteorder	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
caif	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
can	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
cifs	[ DIR ]	drwxr-xr-x	2024-03-12 22:00
dvb	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
genwqe	[ DIR ]	drwxr-xr-x	2024-03-12 22:00
hdlc	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
hsi	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
iio	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
isdn	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
mmc	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
netfilter	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
netfilter_arp	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
netfilter_bridge	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
netfilter_ipv4	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
netfilter_ipv6	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
nfsd	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
raid	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
spi	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
sunrpc	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
tc_act	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
tc_ematch	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
usb	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
wimax	[ DIR ]	drwxrwxrwx	2024-03-12 22:00
a.out.h	7.15 KB	-rw-r--r--	2022-06-30 20:26
acct.h	3.58 KB	-rw-r--r--	2022-06-30 20:26
adb.h	1.05 KB	-rw-r--r--	2022-06-30 20:26
adfs_fs.h	873 B	-rw-r--r--	2022-06-30 20:26
affs_hardblocks.h	1.45 KB	-rw-r--r--	2022-06-30 20:26
agpgart.h	3.85 KB	-rw-r--r--	2022-06-30 20:26
aio_abi.h	3.1 KB	-rw-r--r--	2022-06-30 20:26
am437x-vpfe.h	3.53 KB	-rw-r--r--	2022-06-30 20:26
apm_bios.h	3.53 KB	-rw-r--r--	2022-06-30 20:26
arcfb.h	150 B	-rw-r--r--	2022-06-30 20:26
atalk.h	960 B	-rw-r--r--	2022-06-30 20:26
atm.h	7.64 KB	-rw-r--r--	2022-06-30 20:26
atm_eni.h	585 B	-rw-r--r--	2022-06-30 20:26
atm_he.h	343 B	-rw-r--r--	2022-06-30 20:26
atm_idt77105.h	892 B	-rw-r--r--	2022-06-30 20:26
atm_nicstar.h	1.19 KB	-rw-r--r--	2022-06-30 20:26
atm_tcp.h	1.52 KB	-rw-r--r--	2022-06-30 20:26
atm_zatm.h	1.44 KB	-rw-r--r--	2022-06-30 20:26
atmapi.h	889 B	-rw-r--r--	2022-06-30 20:26
atmarp.h	1.2 KB	-rw-r--r--	2022-06-30 20:26
atmbr2684.h	3.13 KB	-rw-r--r--	2022-06-30 20:26
atmclip.h	513 B	-rw-r--r--	2022-06-30 20:26
atmdev.h	7.44 KB	-rw-r--r--	2022-06-30 20:26
atmioc.h	1.55 KB	-rw-r--r--	2022-06-30 20:26
atmlec.h	2.26 KB	-rw-r--r--	2022-06-30 20:26
atmmpc.h	4.07 KB	-rw-r--r--	2022-06-30 20:26
atmppp.h	576 B	-rw-r--r--	2022-06-30 20:26
atmsap.h	4.79 KB	-rw-r--r--	2022-06-30 20:26
atmsvc.h	1.75 KB	-rw-r--r--	2022-06-30 20:26
audit.h	18.44 KB	-rw-r--r--	2022-06-30 20:26
auto_dev-ioctl.h	4.96 KB	-rw-r--r--	2022-06-30 20:26
auto_fs.h	2.15 KB	-rw-r--r--	2022-06-30 20:26
auto_fs4.h	3.95 KB	-rw-r--r--	2022-06-30 20:26
auxvec.h	1.4 KB	-rw-r--r--	2022-06-30 20:26
ax25.h	2.7 KB	-rw-r--r--	2022-06-30 20:26
b1lli.h	1.62 KB	-rw-r--r--	2022-06-30 20:26
baycom.h	820 B	-rw-r--r--	2022-06-30 20:26
bcache.h	8.11 KB	-rw-r--r--	2022-06-30 20:26
bcm933xx_hcs.h	356 B	-rw-r--r--	2022-06-30 20:26
bfs_fs.h	1.79 KB	-rw-r--r--	2022-06-30 20:26
binfmts.h	565 B	-rw-r--r--	2022-06-30 20:26
blkpg.h	1.53 KB	-rw-r--r--	2022-06-30 20:26
blktrace_api.h	4.38 KB	-rw-r--r--	2022-06-30 20:26
bpf.h	14.31 KB	-rw-r--r--	2022-06-30 20:26
bpf_common.h	1.2 KB	-rw-r--r--	2022-06-30 20:26
bpf_perf_event.h	468 B	-rw-r--r--	2022-06-30 20:26
bpqether.h	918 B	-rw-r--r--	2022-06-30 20:26
bsg.h	2.37 KB	-rw-r--r--	2022-06-30 20:26
bt-bmc.h	508 B	-rw-r--r--	2022-06-30 20:26
btrfs.h	25.29 KB	-rw-r--r--	2022-06-30 20:26
btrfs_tree.h	24.56 KB	-rw-r--r--	2022-06-30 20:26
can.h	7.62 KB	-rw-r--r--	2022-06-30 20:26
capability.h	11.07 KB	-rw-r--r--	2022-06-30 20:26
capi.h	2.99 KB	-rw-r--r--	2022-06-30 20:26
cciss_defs.h	3.14 KB	-rw-r--r--	2022-06-30 20:26
cciss_ioctl.h	2.63 KB	-rw-r--r--	2022-06-30 20:26
cdrom.h	28.12 KB	-rw-r--r--	2022-06-30 20:26
cgroupstats.h	2.1 KB	-rw-r--r--	2022-06-30 20:26
chio.h	5.16 KB	-rw-r--r--	2022-06-30 20:26
cm4000_cs.h	1.7 KB	-rw-r--r--	2022-06-30 20:26
cn_proc.h	3.19 KB	-rw-r--r--	2022-06-30 20:26
coda.h	17.09 KB	-rw-r--r--	2022-06-30 20:26
coda_psdev.h	297 B	-rw-r--r--	2022-06-30 20:26
coff.h	12.12 KB	-rw-r--r--	2022-06-30 20:26
connector.h	2.14 KB	-rw-r--r--	2022-06-30 20:26
const.h	872 B	-rw-r--r--	2022-06-30 20:26
coresight-stm.h	643 B	-rw-r--r--	2022-06-30 20:26
cramfs_fs.h	2.68 KB	-rw-r--r--	2022-06-30 20:26
cryptouser.h	3.17 KB	-rw-r--r--	2022-06-30 20:26
cuda.h	842 B	-rw-r--r--	2022-06-30 20:26
cyclades.h	16.65 KB	-rw-r--r--	2022-06-30 20:26
cycx_cfm.h	2.86 KB	-rw-r--r--	2022-06-30 20:26
dcbnl.h	24.27 KB	-rw-r--r--	2022-06-30 20:26
dccp.h	6.22 KB	-rw-r--r--	2022-06-30 20:26
devlink.h	4.12 KB	-rw-r--r--	2022-06-30 20:26
dlm.h	2.43 KB	-rw-r--r--	2022-06-30 20:26
dlm_device.h	2.42 KB	-rw-r--r--	2022-06-30 20:26
dlm_netlink.h	1.04 KB	-rw-r--r--	2022-06-30 20:26
dlm_plock.h	831 B	-rw-r--r--	2022-06-30 20:26
dlmconstants.h	4.9 KB	-rw-r--r--	2022-06-30 20:26
dm-ioctl.h	10.45 KB	-rw-r--r--	2022-06-30 20:26
dm-log-userspace.h	14.82 KB	-rw-r--r--	2022-06-30 20:26
dn.h	4.47 KB	-rw-r--r--	2022-06-30 20:26
dqblk_xfs.h	8.72 KB	-rw-r--r--	2022-06-30 20:26
edd.h	5.41 KB	-rw-r--r--	2022-06-30 20:26
efs_fs_sb.h	2.11 KB	-rw-r--r--	2022-06-30 20:26
elf-em.h	2.12 KB	-rw-r--r--	2022-06-30 20:26
elf-fdpic.h	1.04 KB	-rw-r--r--	2022-06-30 20:26
elf.h	12.59 KB	-rw-r--r--	2022-06-30 20:26
elfcore.h	2.86 KB	-rw-r--r--	2022-06-30 20:26
errno.h	23 B	-rw-r--r--	2022-06-30 20:26
errqueue.h	1.21 KB	-rw-r--r--	2022-06-30 20:26
ethtool.h	67.51 KB	-rw-r--r--	2022-06-30 20:26
eventpoll.h	2.42 KB	-rw-r--r--	2022-06-30 20:26
fadvise.h	779 B	-rw-r--r--	2022-06-30 20:26
falloc.h	3.44 KB	-rw-r--r--	2022-06-30 20:26
fanotify.h	3.42 KB	-rw-r--r--	2022-06-30 20:26
fb.h	16 KB	-rw-r--r--	2022-06-30 20:26
fcntl.h	2.16 KB	-rw-r--r--	2022-06-30 20:26
fd.h	11.34 KB	-rw-r--r--	2022-06-30 20:26
fdreg.h	5.23 KB	-rw-r--r--	2022-06-30 20:26
fib_rules.h	1.64 KB	-rw-r--r--	2022-06-30 20:26
fiemap.h	2.65 KB	-rw-r--r--	2022-06-30 20:26
filter.h	2.1 KB	-rw-r--r--	2022-06-30 20:26
firewire-cdev.h	42.86 KB	-rw-r--r--	2022-06-30 20:26
firewire-constants.h	3.16 KB	-rw-r--r--	2022-06-30 20:26
flat.h	2.04 KB	-rw-r--r--	2022-06-30 20:26
fou.h	631 B	-rw-r--r--	2022-06-30 20:26
fs.h	13.2 KB	-rw-r--r--	2022-06-30 20:26
fsl_hypervisor.h	7.05 KB	-rw-r--r--	2022-06-30 20:26
fuse.h	16.98 KB	-rw-r--r--	2022-06-30 20:26
futex.h	4.81 KB	-rw-r--r--	2022-06-30 20:26
gameport.h	834 B	-rw-r--r--	2022-06-30 20:26
gen_stats.h	1.48 KB	-rw-r--r--	2022-06-30 20:26
genetlink.h	1.77 KB	-rw-r--r--	2022-06-30 20:26
gfs2_ondisk.h	12 KB	-rw-r--r--	2022-06-30 20:26
gigaset_dev.h	1.35 KB	-rw-r--r--	2022-06-30 20:26
gpio.h	5.55 KB	-rw-r--r--	2022-06-30 20:26
gsmmux.h	978 B	-rw-r--r--	2022-06-30 20:26
gtp.h	499 B	-rw-r--r--	2022-06-30 20:26
hash_info.h	857 B	-rw-r--r--	2022-06-30 20:26
hdlc.h	574 B	-rw-r--r--	2022-06-30 20:26
hdlcdrv.h	2.78 KB	-rw-r--r--	2022-06-30 20:26
hdreg.h	22.11 KB	-rw-r--r--	2022-06-30 20:26
hid.h	1.79 KB	-rw-r--r--	2022-06-30 20:26
hiddev.h	6.13 KB	-rw-r--r--	2022-06-30 20:26
hidraw.h	1.41 KB	-rw-r--r--	2022-06-30 20:26
hpet.h	680 B	-rw-r--r--	2022-06-30 20:26
hsr_netlink.h	1017 B	-rw-r--r--	2022-06-30 20:26
hw_breakpoint.h	575 B	-rw-r--r--	2022-06-30 20:26
hyperv.h	10.26 KB	-rw-r--r--	2022-06-30 20:26
hysdn_if.h	1.29 KB	-rw-r--r--	2022-06-30 20:26
i2c-dev.h	2.49 KB	-rw-r--r--	2022-06-30 20:26
i2c.h	6.74 KB	-rw-r--r--	2022-06-30 20:26
i2o-dev.h	11.22 KB	-rw-r--r--	2022-06-30 20:26
i8k.h	1.43 KB	-rw-r--r--	2022-06-30 20:26
icmp.h	2.84 KB	-rw-r--r--	2022-06-30 20:26
icmpv6.h	3.82 KB	-rw-r--r--	2022-06-30 20:26
if.h	10.44 KB	-rw-r--r--	2022-06-30 20:26
if_addr.h	1.7 KB	-rw-r--r--	2022-06-30 20:26
if_addrlabel.h	658 B	-rw-r--r--	2022-06-30 20:26
if_alg.h	882 B	-rw-r--r--	2022-06-30 20:26
if_arcnet.h	3.57 KB	-rw-r--r--	2022-06-30 20:26
if_arp.h	6.24 KB	-rw-r--r--	2022-06-30 20:26
if_bonding.h	4.11 KB	-rw-r--r--	2022-06-30 20:26
if_bridge.h	6.22 KB	-rw-r--r--	2022-06-30 20:26
if_cablemodem.h	922 B	-rw-r--r--	2022-06-30 20:26
if_eql.h	1.26 KB	-rw-r--r--	2022-06-30 20:26
if_ether.h	7.27 KB	-rw-r--r--	2022-06-30 20:26
if_fc.h	1.63 KB	-rw-r--r--	2022-06-30 20:26
if_fddi.h	3.6 KB	-rw-r--r--	2022-06-30 20:26
if_frad.h	2.89 KB	-rw-r--r--	2022-06-30 20:26
if_hippi.h	4.07 KB	-rw-r--r--	2022-06-30 20:26
if_infiniband.h	1.13 KB	-rw-r--r--	2022-06-30 20:26
if_link.h	20 KB	-rw-r--r--	2022-06-30 20:26
if_ltalk.h	147 B	-rw-r--r--	2022-06-30 20:26
if_macsec.h	5.42 KB	-rw-r--r--	2022-06-30 20:26
if_packet.h	7.63 KB	-rw-r--r--	2022-06-30 20:26
if_phonet.h	361 B	-rw-r--r--	2022-06-30 20:26
if_plip.h	596 B	-rw-r--r--	2022-06-30 20:26
if_ppp.h	29 B	-rw-r--r--	2022-06-30 20:26
if_pppol2tp.h	3.15 KB	-rw-r--r--	2022-06-30 20:26
if_pppox.h	4.7 KB	-rw-r--r--	2022-06-30 20:26
if_slip.h	809 B	-rw-r--r--	2022-06-30 20:26
if_team.h	2.48 KB	-rw-r--r--	2022-06-30 20:26
if_tun.h	3.72 KB	-rw-r--r--	2022-06-30 20:26
if_tunnel.h	3.44 KB	-rw-r--r--	2022-06-30 20:26
if_vlan.h	1.69 KB	-rw-r--r--	2022-06-30 20:26
if_x25.h	817 B	-rw-r--r--	2022-06-30 20:26
igmp.h	2.88 KB	-rw-r--r--	2022-06-30 20:26
ila.h	760 B	-rw-r--r--	2022-06-30 20:26
in.h	9.38 KB	-rw-r--r--	2022-06-30 20:26
in6.h	7.15 KB	-rw-r--r--	2022-06-30 20:26
in_route.h	873 B	-rw-r--r--	2022-06-30 20:26
inet_diag.h	3.41 KB	-rw-r--r--	2022-06-30 20:26
inotify.h	2.85 KB	-rw-r--r--	2022-06-30 20:26
input-event-codes.h	23.87 KB	-rw-r--r--	2022-06-30 20:26
input.h	14.77 KB	-rw-r--r--	2022-06-30 20:26
ioctl.h	100 B	-rw-r--r--	2022-06-30 20:26
ip.h	4.53 KB	-rw-r--r--	2022-06-30 20:26
ip6_tunnel.h	1.67 KB	-rw-r--r--	2022-06-30 20:26
ip_vs.h	13.25 KB	-rw-r--r--	2022-06-30 20:26
ipc.h	1.99 KB	-rw-r--r--	2022-06-30 20:26
ipmi.h	15.8 KB	-rw-r--r--	2022-06-30 20:26
ipmi_msgdefs.h	4.37 KB	-rw-r--r--	2022-06-30 20:26
ipsec.h	884 B	-rw-r--r--	2022-06-30 20:26
ipv6.h	3.58 KB	-rw-r--r--	2022-06-30 20:26
ipv6_route.h	1.73 KB	-rw-r--r--	2022-06-30 20:26
ipx.h	2.23 KB	-rw-r--r--	2022-06-30 20:26
irda.h	7.31 KB	-rw-r--r--	2022-06-30 20:26
irqnr.h	104 B	-rw-r--r--	2022-06-30 20:26
isdn.h	5.58 KB	-rw-r--r--	2022-06-30 20:26
isdn_divertif.h	1.11 KB	-rw-r--r--	2022-06-30 20:26
isdn_ppp.h	1.82 KB	-rw-r--r--	2022-06-30 20:26
isdnif.h	2.25 KB	-rw-r--r--	2022-06-30 20:26
iso_fs.h	6.29 KB	-rw-r--r--	2022-06-30 20:26
ivtv.h	2.89 KB	-rw-r--r--	2022-06-30 20:26
ivtvfb.h	1.12 KB	-rw-r--r--	2022-06-30 20:26
ixjuser.h	24.53 KB	-rw-r--r--	2022-06-30 20:26
jffs2.h	6.85 KB	-rw-r--r--	2022-06-30 20:26
joystick.h	3.5 KB	-rw-r--r--	2022-06-30 20:26
kcm.h	759 B	-rw-r--r--	2022-06-30 20:26
kcmp.h	214 B	-rw-r--r--	2022-06-30 20:26
kcov.h	247 B	-rw-r--r--	2022-06-30 20:26
kd.h	6.04 KB	-rw-r--r--	2022-06-30 20:26
kdev_t.h	320 B	-rw-r--r--	2022-06-30 20:26
kernel-page-flags.h	814 B	-rw-r--r--	2022-06-30 20:26
kernel.h	131 B	-rw-r--r--	2022-06-30 20:26
kernelcapi.h	956 B	-rw-r--r--	2022-06-30 20:26
kexec.h	1.73 KB	-rw-r--r--	2022-06-30 20:26
keyboard.h	12.42 KB	-rw-r--r--	2022-06-30 20:26
keyctl.h	3.17 KB	-rw-r--r--	2022-06-30 20:26
kfd_ioctl.h	8.62 KB	-rw-r--r--	2022-06-30 20:26
kvm.h	37.19 KB	-rw-r--r--	2022-06-30 20:26
kvm_para.h	760 B	-rw-r--r--	2022-06-30 20:26
l2tp.h	5.44 KB	-rw-r--r--	2022-06-30 20:26
libc-compat.h	8.03 KB	-rw-r--r--	2022-06-30 20:26
lightnvm.h	3.69 KB	-rw-r--r--	2022-06-30 20:26
limits.h	874 B	-rw-r--r--	2022-06-30 20:26
lirc.h	4.88 KB	-rw-r--r--	2022-06-30 20:26
llc.h	2.98 KB	-rw-r--r--	2022-06-30 20:26
loop.h	2.36 KB	-rw-r--r--	2022-06-30 20:26
lp.h	3.72 KB	-rw-r--r--	2022-06-30 20:26
lwtunnel.h	811 B	-rw-r--r--	2022-06-30 20:26
magic.h	3.12 KB	-rw-r--r--	2022-06-30 20:26
major.h	4.53 KB	-rw-r--r--	2022-06-30 20:26
map_to_7segment.h	7.02 KB	-rw-r--r--	2022-06-30 20:26
matroxfb.h	1.37 KB	-rw-r--r--	2022-06-30 20:26
mdio.h	13.74 KB	-rw-r--r--	2022-06-30 20:26
media-bus-format.h	5.81 KB	-rw-r--r--	2022-06-30 20:26
media.h	11.95 KB	-rw-r--r--	2022-06-30 20:26
mei.h	4.62 KB	-rw-r--r--	2022-06-30 20:26
membarrier.h	2.38 KB	-rw-r--r--	2022-06-30 20:26
memfd.h	186 B	-rw-r--r--	2022-06-30 20:26
mempolicy.h	2.35 KB	-rw-r--r--	2022-06-30 20:26
meye.h	2.41 KB	-rw-r--r--	2022-06-30 20:26
mic_common.h	6.3 KB	-rw-r--r--	2022-06-30 20:26
mic_ioctl.h	2.14 KB	-rw-r--r--	2022-06-30 20:26
mii.h	7.83 KB	-rw-r--r--	2022-06-30 20:26
minix_fs.h	2.01 KB	-rw-r--r--	2022-06-30 20:26
mman.h	230 B	-rw-r--r--	2022-06-30 20:26
mmtimer.h	2.01 KB	-rw-r--r--	2022-06-30 20:26
module.h	192 B	-rw-r--r--	2022-06-30 20:26
mpls.h	1.38 KB	-rw-r--r--	2022-06-30 20:26
mpls_iptunnel.h	650 B	-rw-r--r--	2022-06-30 20:26
mqueue.h	2.06 KB	-rw-r--r--	2022-06-30 20:26
mroute.h	4.06 KB	-rw-r--r--	2022-06-30 20:26
mroute6.h	4.14 KB	-rw-r--r--	2022-06-30 20:26
msdos_fs.h	6.74 KB	-rw-r--r--	2022-06-30 20:26
msg.h	3.21 KB	-rw-r--r--	2022-06-30 20:26
mtio.h	7.92 KB	-rw-r--r--	2022-06-30 20:26
n_r3964.h	2.29 KB	-rw-r--r--	2022-06-30 20:26
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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__ */