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[ .. KEMBALI ]
📄 a.out.h
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📄 acct.h
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📄 acrn.h
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📄 adb.h
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📄 adfs_fs.h
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📄 affs_hardblocks.h
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📄 agpgart.h
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📄 aio_abi.h
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📄 am437x-vpfe.h
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📁 android/
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📄 apm_bios.h
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📄 arcfb.h
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📄 arm_sdei.h
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📄 aspeed-lpc-ctrl.h
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📄 aspeed-p2a-ctrl.h
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📄 atalk.h
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📄 atm.h
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📄 atm_eni.h
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📄 atm_he.h
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📄 atm_idt77105.h
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📄 atmarp.h
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📄 atmbr2684.h
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📄 atmdev.h
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📄 atmioc.h
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📄 atmlec.h
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📄 atmmpc.h
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📄 atmppp.h
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📄 atmsap.h
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📄 atmsvc.h
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📄 audit.h
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📄 auto_dev-ioctl.h
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📄 auto_fs.h
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📄 auto_fs4.h
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📄 auxvec.h
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📄 ax25.h
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📄 batadv_packet.h
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📄 batman_adv.h
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📄 baycom.h
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📄 bcm933xx_hcs.h
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📄 bfs_fs.h
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📄 binfmts.h
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📄 bits.h
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📄 blkpg.h
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📄 blktrace_api.h
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📄 blkzoned.h
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📄 bpf.h
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📄 bpf_common.h
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📄 bpf_perf_event.h
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📄 bpfilter.h
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📄 bpqether.h
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📄 bsg.h
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📄 bt-bmc.h
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📄 btf.h
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📁 byteorder/
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📄 cciss_ioctl.h
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📄 ccs.h
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📄 cdrom.h
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📄 cec-funcs.h
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📄 cec.h
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📄 cfm_bridge.h
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📄 chio.h
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📁 cifs/
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📄 close_range.h
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📄 cm4000_cs.h
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📄 coda.h
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📄 coff.h
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📄 connector.h
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📄 const.h
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📄 coresight-stm.h
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📄 cramfs_fs.h
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📄 cryptouser.h
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📄 cuda.h
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📄 cxl_mem.h
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📄 cycx_cfm.h
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📄 dcbnl.h
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📄 dccp.h
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📄 devlink.h
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📄 dlm.h
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📄 dlm_device.h
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📄 dlm_netlink.h
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📄 dlm_plock.h
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📄 dlmconstants.h
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📄 dm-ioctl.h
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📄 dm-log-userspace.h
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📄 dma-buf.h
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📄 dma-heap.h
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📄 dn.h
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📄 dns_resolver.h
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📄 dpll.h
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📄 dqblk_xfs.h
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📁 dvb/
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📄 edd.h
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📄 efs_fs_sb.h
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📄 elf-fdpic.h
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📄 elf.h
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📄 errno.h
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📄 errqueue.h
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📄 erspan.h
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📄 ethtool.h
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📄 ethtool_netlink.h
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📄 ethtool_netlink_generated.h
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📄 eventfd.h
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📄 eventpoll.h
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📄 f2fs.h
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📄 fb.h
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📄 fcntl.h
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📄 fib_rules.h
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📄 fiemap.h
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📄 filter.h
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📄 firewire-cdev.h
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📄 fou.h
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📄 fs.h
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📄 fsi.h
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📄 fsl_hypervisor.h
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📄 fsl_mc.h
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📄 fuse.h
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📄 futex.h
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📄 gameport.h
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📄 gen_stats.h
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📁 genwqe/
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📄 gfs2_ondisk.h
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📄 gpio.h
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📄 gsmmux.h
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📄 gtp.h
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📄 handshake.h
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📄 hash_info.h
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📁 hdlc/
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📄 hdlc.h
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📄 hdlcdrv.h
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📄 hdreg.h
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📄 hid.h
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📄 hiddev.h
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📄 hidraw.h
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📄 hpet.h
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📁 hsi/
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📄 hsr_netlink.h
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📄 hw_breakpoint.h
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📄 hyperv.h
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📄 i2c-dev.h
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📄 i2c.h
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📄 i2o-dev.h
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📄 i8k.h
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📄 icmp.h
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📄 icmpv6.h
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📄 idxd.h
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📄 if.h
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📄 if_addr.h
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📄 if_addrlabel.h
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📄 if_alg.h
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📄 if_arcnet.h
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📄 if_arp.h
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📄 if_bonding.h
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📄 if_bridge.h
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📄 if_cablemodem.h
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📄 if_eql.h
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📄 if_ether.h
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📄 if_fc.h
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📄 if_fddi.h
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📄 if_hippi.h
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📄 if_infiniband.h
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📄 if_link.h
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📄 if_ltalk.h
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📄 if_macsec.h
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📄 if_packet.h
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📄 if_phonet.h
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📄 if_plip.h
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📄 if_ppp.h
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📄 if_pppol2tp.h
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📄 if_pppox.h
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📄 if_slip.h
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📄 if_team.h
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📄 if_tun.h
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📄 if_tunnel.h
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📄 if_vlan.h
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📄 if_x25.h
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📄 if_xdp.h
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📄 igmp.h
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📁 iio/
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📄 ila.h
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📄 in.h
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📄 in6.h
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📄 in_route.h
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📄 inet_diag.h
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📄 inotify.h
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📄 input-event-codes.h
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📄 input.h
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📄 io_uring.h
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📄 ioctl.h
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📄 iommufd.h
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📄 ioprio.h
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📄 ip.h
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📄 ip6_tunnel.h
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📄 ip_vs.h
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📄 ipc.h
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📄 ipmi.h
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📄 ipmi_bmc.h
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📄 ipmi_msgdefs.h
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📄 ipmi_ssif_bmc.h
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📄 ipsec.h
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📄 ipv6.h
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📄 ipv6_route.h
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📄 ipx.h
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📄 irqnr.h
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📁 isdn/
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📄 iso_fs.h
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📄 isst_if.h
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📄 ivtv.h
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📄 ivtvfb.h
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📄 jffs2.h
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📄 joystick.h
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📄 kcm.h
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📄 kcmp.h
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📄 kcov.h
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📄 kd.h
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📄 kdev_t.h
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📄 kernel-page-flags.h
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📄 kernel.h
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📄 kernelcapi.h
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📄 kexec.h
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📄 keyboard.h
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📄 keyctl.h
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📄 kfd_ioctl.h
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📄 kfd_sysfs.h
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📄 kvm.h
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📄 kvm_para.h
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📄 l2tp.h
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📄 landlock.h
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📄 libc-compat.h
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📄 limits.h
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📄 lirc.h
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📄 llc.h
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📄 loadpin.h
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📄 loop.h
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📄 lp.h
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📄 lsm.h
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📄 lwtunnel.h
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📄 magic.h
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📄 major.h
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📄 map_to_7segment.h
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📄 matroxfb.h
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📄 max2175.h
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📄 mdio.h
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📄 media-bus-format.h
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📄 media.h
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📄 mei.h
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📄 mei_uuid.h
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📄 membarrier.h
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📄 memfd.h
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📄 mempolicy.h
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📄 meye.h
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📄 mii.h
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📄 minix_fs.h
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📁 misc/
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📄 mman.h
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📁 mmc/
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📄 mmtimer.h
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📄 module.h
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📄 mount.h
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📄 mpls.h
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📄 mpls_iptunnel.h
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📄 mptcp.h
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📄 mptcp_pm.h
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📄 mqueue.h
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📄 mroute.h
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📄 mroute6.h
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📄 mrp_bridge.h
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📄 msdos_fs.h
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📄 msg.h
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📄 mshv.h
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📄 mtio.h
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📄 nbd-netlink.h
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📄 nbd.h
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📄 ncsi.h
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📄 ndctl.h
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📄 neighbour.h
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📄 net.h
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📄 net_dropmon.h
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📄 net_namespace.h
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📄 net_shaper.h
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📄 net_tstamp.h
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📄 netconf.h
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📄 netdev.h
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📄 netdevice.h
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📁 netfilter/
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📄 netfilter.h
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📁 netfilter_arp/
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📄 netfilter_arp.h
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📁 netfilter_bridge/
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📄 netfilter_bridge.h
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📄 netfilter_decnet.h
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📁 netfilter_ipv4/
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📄 netfilter_ipv4.h
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📁 netfilter_ipv6/
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📄 netfilter_ipv6.h
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📄 netlink.h
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📄 netlink_diag.h
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📄 netrom.h
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📄 nexthop.h
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📄 nfc.h
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📄 nfs.h
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📄 nfs2.h
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📄 nfs3.h
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📄 nfs4.h
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📄 nfs4_mount.h
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📄 nfs_fs.h
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📄 nfs_idmap.h
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📄 nfs_mount.h
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📄 nfsacl.h
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📁 nfsd/
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📄 nfsd_netlink.h
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📄 nilfs2_api.h
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📄 nilfs2_ondisk.h
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📄 nitro_enclaves.h
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📄 nl80211.h
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📄 nsfs.h
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📄 nubus.h
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📄 nvme_ioctl.h
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📄 nvram.h
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📄 omap3isp.h
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📄 omapfb.h
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📄 oom.h
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📄 openat2.h
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📄 openvswitch.h
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📄 packet_diag.h
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📄 param.h
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📄 parport.h
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📄 patchkey.h
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📄 pci.h
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📄 pci_regs.h
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📄 pcitest.h
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📄 perf_event.h
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📄 personality.h
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📄 pfkeyv2.h
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📄 pfrut.h
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📄 pg.h
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📄 phantom.h
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📄 phonet.h
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📄 pidfd.h
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📄 pkt_cls.h
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📄 pkt_sched.h
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📄 pktcdvd.h
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📄 pmu.h
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📄 poll.h
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📄 posix_acl.h
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📄 posix_acl_xattr.h
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📄 posix_types.h
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📄 ppdev.h
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📄 ppp-comp.h
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📄 ppp-ioctl.h
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📄 ppp_defs.h
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📄 pps.h
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📄 pr.h
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📄 prctl.h
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📄 psample.h
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📄 psci.h
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📄 psp-dbc.h
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📄 psp-sev.h
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📄 ptp_clock.h
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📄 ptrace.h
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📄 qemu_fw_cfg.h
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📄 qnx4_fs.h
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📄 qnxtypes.h
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📄 qrtr.h
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📄 quota.h
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📄 radeonfb.h
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📁 raid/
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📄 random.h
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📄 rds.h
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📄 reboot.h
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📄 reiserfs_fs.h
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📄 reiserfs_xattr.h
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📄 remoteproc_cdev.h
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📄 resource.h
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📄 rfkill.h
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📄 rio_cm_cdev.h
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📄 rio_mport_cdev.h
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📄 rkisp1-config.h
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📄 romfs_fs.h
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📄 rose.h
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📄 route.h
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📄 rpl.h
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📄 rpl_iptunnel.h
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📄 rpmsg.h
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📄 rpmsg_types.h
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📄 rseq.h
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📄 rtc.h
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📄 rtnetlink.h
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📄 rxrpc.h
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📄 scc.h
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📁 sched/
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📄 sched.h
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📄 scif_ioctl.h
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📄 screen_info.h
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📄 sctp.h
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📄 seccomp.h
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📄 securebits.h
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📄 sed-opal.h
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📄 seg6.h
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📄 seg6_genl.h
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📄 seg6_hmac.h
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📄 seg6_iptunnel.h
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📄 seg6_local.h
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📄 selinux_netlink.h
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📄 sem.h
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📄 serial.h
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📄 serial_core.h
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📄 serial_reg.h
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📄 serio.h
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📄 sev-guest.h
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📄 shm.h
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📄 signal.h
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📄 smc.h
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📄 smc_diag.h
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📄 smiapp.h
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📄 snmp.h
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📄 sock_diag.h
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📄 socket.h
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📄 sockios.h
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📄 sonet.h
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📄 sonypi.h
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📁 spi/
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📄 stat.h
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📄 stddef.h
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📄 string.h
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📁 sunrpc/
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📄 suspend_ioctls.h
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📄 swab.h
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📄 switchtec_ioctl.h
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📄 sync_file.h
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📄 synclink.h
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📄 sysctl.h
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📄 sysinfo.h
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📄 target_core_user.h
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📄 taskstats.h
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📁 tc_act/
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📁 tc_ematch/
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📄 tcp.h
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📄 tcp_metrics.h
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📄 tdx-guest.h
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📄 tee.h
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📄 termios.h
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📄 thermal.h
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📄 timerfd.h
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📄 times.h
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📄 timex.h
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SAVING...
BERHASIL DIUBAH!
EDITING: dm-log-userspace.h
/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */ /* * 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/types.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): * __u32 (*get_region_size)(struct dm_dirty_log *log); * * Payload-to-userspace: * None. * Payload-to-kernel: * __u64 - 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: * __u64 - the region to get clean status on * Payload-to-kernel: * __s64 - 1 if clean, 0 otherwise * * Payload is sizeof(__u64) 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: * __u64 - the region to get sync status on * Payload-to-kernel: * __s64 - 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: * __u64 [] - 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: * __u64 [] - 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(__u64)'. * * 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: * __u64 [] - 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(__u64)'. * * 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: * { * __s64 i; -- 1 if recovery necessary, 0 otherwise * __u64 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: * { * __u64 - region to set sync state on * __s64 - 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: * __u64 - 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: * __u64 - region to determine recovery status on * Payload-to-kernel: * { * __s64 is_recovering; -- 0 if no, 1 if yes * __u64 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.) */ __u64 luid; char uuid[DM_UUID_LEN]; char padding[3]; /* Padding because DM_UUID_LEN = 129 */ __u32 version; /* See DM_ULOG_REQUEST_VERSION */ __s32 error; /* Used to report back processing errors */ __u32 seq; /* Sequence number for request */ __u32 request_type; /* DM_ULOG_* defined above */ __u32 data_size; /* How much data (not including this struct) */ char data[0]; }; #endif /* __DM_LOG_USERSPACE_H__ */
SIMPAN PERUBAHAN