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include
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linux
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ðŸ“
..
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a.out.h
(6.73 KB)
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acct.h
(3.65 KB)
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adb.h
(1.11 KB)
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adfs_fs.h
(936 B)
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affs_hardblocks.h
(1.51 KB)
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agpgart.h
(3.85 KB)
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aio_abi.h
(3.34 KB)
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am437x-vpfe.h
(3.59 KB)
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android
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apm_bios.h
(3.6 KB)
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arcfb.h
(213 B)
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arm_sdei.h
(2.69 KB)
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aspeed-lpc-ctrl.h
(1.74 KB)
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atalk.h
(1023 B)
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atm.h
(7.7 KB)
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atm_eni.h
(648 B)
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atm_he.h
(406 B)
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atm_idt77105.h
(955 B)
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atm_nicstar.h
(1.25 KB)
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atm_tcp.h
(1.58 KB)
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atm_zatm.h
(1.5 KB)
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atmapi.h
(952 B)
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atmarp.h
(1.27 KB)
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atmbr2684.h
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atmclip.h
(576 B)
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atmdev.h
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atmioc.h
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atmlec.h
(2.33 KB)
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atmmpc.h
(4.13 KB)
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atmppp.h
(639 B)
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atmsap.h
(4.85 KB)
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atmsvc.h
(1.81 KB)
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audit.h
(19.92 KB)
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auto_dev-ioctl.h
(4.87 KB)
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auto_fs.h
(6.28 KB)
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auto_fs4.h
(451 B)
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auxvec.h
(1.56 KB)
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ax25.h
(2.76 KB)
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b1lli.h
(1.68 KB)
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batadv_packet.h
(20.01 KB)
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batman_adv.h
(11.7 KB)
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baycom.h
(883 B)
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bcache.h
(8.17 KB)
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bcm933xx_hcs.h
(419 B)
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bfs_fs.h
(1.85 KB)
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binfmts.h
(628 B)
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blkpg.h
(904 B)
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blktrace_api.h
(4.59 KB)
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blkzoned.h
(6.45 KB)
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bpf.h
(223.3 KB)
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bpf_common.h
(1.33 KB)
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bpf_perf_event.h
(529 B)
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bpfilter.h
(465 B)
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bpqether.h
(981 B)
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bsg.h
(2.44 KB)
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bt-bmc.h
(572 B)
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btf.h
(4.68 KB)
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btrfs.h
(28.24 KB)
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btrfs_tree.h
(24.69 KB)
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byteorder
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caif
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can
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can.h
(7.7 KB)
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capability.h
(13.2 KB)
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capi.h
(3.05 KB)
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cciss_defs.h
(3.2 KB)
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cciss_ioctl.h
(2.7 KB)
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cdrom.h
(28.18 KB)
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cec-funcs.h
(52.64 KB)
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cec.h
(36.81 KB)
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cfm_bridge.h
(1.42 KB)
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cgroupstats.h
(2.17 KB)
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chio.h
(5.22 KB)
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cifs
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close_range.h
(377 B)
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cm4000_cs.h
(1.76 KB)
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cn_proc.h
(3.38 KB)
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coda.h
(17.09 KB)
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coda_psdev.h
(783 B)
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coff.h
(12.18 KB)
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connector.h
(2.2 KB)
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const.h
(788 B)
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coresight-stm.h
(674 B)
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cramfs_fs.h
(3.47 KB)
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cryptouser.h
(3.31 KB)
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cuda.h
(905 B)
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cyclades.h
(16.71 KB)
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cycx_cfm.h
(2.92 KB)
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dcbnl.h
(24.65 KB)
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dccp.h
(6.29 KB)
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devlink.h
(21.05 KB)
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dlm.h
(2.49 KB)
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dlm_device.h
(2.48 KB)
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dlm_netlink.h
(1.13 KB)
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dlm_plock.h
(894 B)
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dlmconstants.h
(4.96 KB)
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dm-ioctl.h
(11.13 KB)
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dm-log-userspace.h
(14.83 KB)
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dma-buf.h
(5.12 KB)
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dn.h
(4.53 KB)
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dqblk_xfs.h
(9.03 KB)
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dvb
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edd.h
(5.47 KB)
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efs_fs_sb.h
(2.17 KB)
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elf-em.h
(2.14 KB)
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elf-fdpic.h
(1.1 KB)
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elf.h
(13.16 KB)
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elfcore.h
(2.92 KB)
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errno.h
(23 B)
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errqueue.h
(1.44 KB)
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erspan.h
(1.03 KB)
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ethtool.h
(81.89 KB)
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ethtool_netlink.h
(22.29 KB)
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eventpoll.h
(2.67 KB)
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fadvise.h
(842 B)
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falloc.h
(3.5 KB)
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fanotify.h
(5.22 KB)
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fb.h
(16.09 KB)
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fcntl.h
(4.08 KB)
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fd.h
(11.4 KB)
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fdreg.h
(5.29 KB)
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fib_rules.h
(1.99 KB)
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fiemap.h
(2.71 KB)
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filter.h
(2.16 KB)
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firewire-cdev.h
(42.86 KB)
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firewire-constants.h
(3.16 KB)
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flat.h
(2.1 KB)
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fou.h
(694 B)
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fpga-dfl.h
(8.52 KB)
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fs.h
(13.11 KB)
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fsl_hypervisor.h
(7.13 KB)
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fsmap.h
(4.29 KB)
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fuse.h
(22.92 KB)
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futex.h
(4.88 KB)
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gameport.h
(897 B)
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gen_stats.h
(1.49 KB)
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genetlink.h
(2.12 KB)
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genwqe
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gfs2_ondisk.h
(14.4 KB)
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gigaset_dev.h
(1.41 KB)
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gpio.h
(6.59 KB)
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gsmmux.h
(1.02 KB)
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gtp.h
(681 B)
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hash_info.h
(921 B)
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hdlc
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hdlc.h
(637 B)
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hdlcdrv.h
(2.84 KB)
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hdreg.h
(22.17 KB)
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hid.h
(1.86 KB)
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hiddev.h
(6.2 KB)
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hidraw.h
(1.95 KB)
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hpet.h
(743 B)
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hsi
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hsr_netlink.h
(1.06 KB)
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hw_breakpoint.h
(742 B)
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hyperv.h
(10.89 KB)
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hysdn_if.h
(1.35 KB)
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i2c-dev.h
(2.55 KB)
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i2c.h
(6.96 KB)
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i2o-dev.h
(11.28 KB)
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i8k.h
(1.49 KB)
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icmp.h
(2.91 KB)
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icmpv6.h
(3.94 KB)
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idxd.h
(8.22 KB)
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if.h
(10.65 KB)
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if_addr.h
(1.84 KB)
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if_addrlabel.h
(721 B)
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if_alg.h
(946 B)
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if_arcnet.h
(3.63 KB)
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if_arp.h
(6.42 KB)
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if_bonding.h
(5.17 KB)
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if_bridge.h
(19.06 KB)
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if_cablemodem.h
(986 B)
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if_eql.h
(1.32 KB)
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if_ether.h
(8.05 KB)
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if_fc.h
(1.7 KB)
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if_fddi.h
(3.66 KB)
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if_frad.h
(2.95 KB)
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if_hippi.h
(4.14 KB)
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if_infiniband.h
(1.22 KB)
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if_link.h
(30.28 KB)
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if_ltalk.h
(210 B)
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if_macsec.h
(5.7 KB)
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if_packet.h
(7.73 KB)
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if_phonet.h
(424 B)
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if_plip.h
(660 B)
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if_ppp.h
(29 B)
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if_pppol2tp.h
(3.21 KB)
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if_pppox.h
(4.76 KB)
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if_slip.h
(872 B)
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if_team.h
(2.54 KB)
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if_tun.h
(4 KB)
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if_tunnel.h
(4.41 KB)
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if_vlan.h
(1.79 KB)
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if_x25.h
(881 B)
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if_xdp.h
(2.94 KB)
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ife.h
(351 B)
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igmp.h
(2.99 KB)
ðŸ“
iio
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ila.h
(1.22 KB)
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in.h
(9.78 KB)
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in6.h
(7.26 KB)
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in_route.h
(936 B)
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inet_diag.h
(4.56 KB)
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inotify.h
(3.21 KB)
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input-event-codes.h
(27.94 KB)
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input.h
(15.61 KB)
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io_uring.h
(6.06 KB)
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ioctl.h
(163 B)
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iommu.h
(4.79 KB)
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ip.h
(4.62 KB)
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ip6_tunnel.h
(1.91 KB)
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ip_vs.h
(13.31 KB)
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ipc.h
(2.05 KB)
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ipmi.h
(15.08 KB)
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ipmi_bmc.h
(464 B)
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ipmi_msgdefs.h
(3.35 KB)
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ipmi_ssif_bmc.h
(441 B)
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ipsec.h
(947 B)
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ipv6.h
(3.87 KB)
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ipv6_route.h
(1.86 KB)
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ipx.h
(2.29 KB)
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irqnr.h
(104 B)
ðŸ“
isdn
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isdn.h
(5.64 KB)
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isdn_divertif.h
(1.17 KB)
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isdn_ppp.h
(1.88 KB)
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isdnif.h
(2.31 KB)
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iso_fs.h
(6.33 KB)
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isst_if.h
(5.26 KB)
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ivtv.h
(2.95 KB)
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ivtvfb.h
(1.18 KB)
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jffs2.h
(6.85 KB)
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joystick.h
(3.35 KB)
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kcm.h
(822 B)
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kcmp.h
(522 B)
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kcov.h
(1.07 KB)
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kd.h
(6.11 KB)
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kdev_t.h
(383 B)
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kernel-page-flags.h
(900 B)
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kernel.h
(438 B)
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kernelcapi.h
(1019 B)
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kexec.h
(1.79 KB)
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keyboard.h
(12.48 KB)
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keyctl.h
(3.42 KB)
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kfd_ioctl.h
(28.14 KB)
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kfd_sysfs.h
(4.25 KB)
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kvm.h
(60.12 KB)
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kvm_para.h
(1001 B)
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l2tp.h
(5.46 KB)
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libc-compat.h
(8.09 KB)
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lightnvm.h
(4.92 KB)
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limits.h
(937 B)
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lirc.h
(7.63 KB)
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llc.h
(3.09 KB)
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loop.h
(3.42 KB)
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lp.h
(4.09 KB)
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lwtunnel.h
(2.13 KB)
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magic.h
(3.45 KB)
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major.h
(4.6 KB)
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map_to_7segment.h
(7.08 KB)
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matroxfb.h
(1.43 KB)
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max2175.h
(1.01 KB)
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mdio.h
(16.87 KB)
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media-bus-format.h
(6.26 KB)
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media.h
(11.12 KB)
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mei.h
(3.39 KB)
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membarrier.h
(7.71 KB)
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memfd.h
(1.29 KB)
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mempolicy.h
(2.18 KB)
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meye.h
(2.47 KB)
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mic_common.h
(6.37 KB)
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mic_ioctl.h
(2.2 KB)
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mii.h
(9.27 KB)
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minix_fs.h
(2.07 KB)
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mman.h
(1.35 KB)
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mmc
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mmtimer.h
(2.07 KB)
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module.h
(255 B)
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mount.h
(4.44 KB)
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mpls.h
(2.25 KB)
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mpls_iptunnel.h
(761 B)
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mptcp.h
(5.48 KB)
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mqueue.h
(2.15 KB)
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mroute.h
(5.3 KB)
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mroute6.h
(4.47 KB)
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mrp_bridge.h
(1.67 KB)
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msdos_fs.h
(6.8 KB)
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msg.h
(3.29 KB)
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mtio.h
(7.98 KB)
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n_r3964.h
(2.35 KB)
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nbd-netlink.h
(2.35 KB)
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nbd.h
(2.95 KB)
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ncsi.h
(3.79 KB)
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ndctl.h
(6.71 KB)
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neighbour.h
(5.02 KB)
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net.h
(2.04 KB)
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net_dropmon.h
(2.85 KB)
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net_namespace.h
(715 B)
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net_tstamp.h
(5.67 KB)
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netconf.h
(614 B)
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netdevice.h
(2.2 KB)
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netfilter
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netfilter.h
(1.78 KB)
ðŸ“
netfilter_arp
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netfilter_arp.h
(445 B)
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netfilter_bridge
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netfilter_bridge.h
(1.14 KB)
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netfilter_decnet.h
(1.93 KB)
ðŸ“
netfilter_ipv4
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netfilter_ipv4.h
(2.12 KB)
ðŸ“
netfilter_ipv6
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netfilter_ipv6.h
(2.14 KB)
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netlink.h
(11.23 KB)
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netlink_diag.h
(1.49 KB)
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netrom.h
(807 B)
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nexthop.h
(1.5 KB)
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nfc.h
(10.95 KB)
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nfs.h
(4.39 KB)
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nfs2.h
(1.43 KB)
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nfs3.h
(2.4 KB)
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nfs4.h
(6.44 KB)
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nfs4_mount.h
(1.89 KB)
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nfs_fs.h
(1.6 KB)
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nfs_idmap.h
(2.19 KB)
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nfs_mount.h
(2.09 KB)
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nfsacl.h
(718 B)
ðŸ“
nfsd
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nilfs2_api.h
(7.41 KB)
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nilfs2_ondisk.h
(17.61 KB)
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nitro_enclaves.h
(12.84 KB)
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nl80211.h
(327.41 KB)
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nsfs.h
(639 B)
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nubus.h
(8 KB)
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nvme_ioctl.h
(2.06 KB)
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nvram.h
(532 B)
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omap3isp.h
(20.36 KB)
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omapfb.h
(5.78 KB)
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oom.h
(511 B)
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openat2.h
(1.26 KB)
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openvswitch.h
(39.24 KB)
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packet_diag.h
(1.63 KB)
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param.h
(141 B)
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parport.h
(3.56 KB)
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patchkey.h
(892 B)
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pci.h
(1.35 KB)
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pci_regs.h
(56.47 KB)
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pcitest.h
(711 B)
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perf_event.h
(39.63 KB)
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personality.h
(2.05 KB)
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pfkeyv2.h
(10.32 KB)
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pfrut.h
(7.8 KB)
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pg.h
(2.34 KB)
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phantom.h
(1.62 KB)
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phonet.h
(4.57 KB)
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pkt_cls.h
(18.08 KB)
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pkt_sched.h
(29.59 KB)
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pktcdvd.h
(2.62 KB)
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pmu.h
(5.19 KB)
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poll.h
(22 B)
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posix_acl.h
(1.22 KB)
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posix_acl_xattr.h
(1.09 KB)
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posix_types.h
(1.07 KB)
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ppdev.h
(3.14 KB)
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ppp-comp.h
(2.47 KB)
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ppp-ioctl.h
(5.35 KB)
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ppp_defs.h
(4.99 KB)
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pps.h
(4.62 KB)
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pr.h
(1.05 KB)
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prctl.h
(7.83 KB)
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psample.h
(2.22 KB)
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psci.h
(4.23 KB)
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psp-sev.h
(4.48 KB)
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ptp_clock.h
(7.28 KB)
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ptrace.h
(3.59 KB)
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qemu_fw_cfg.h
(2.41 KB)
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qnx4_fs.h
(2.27 KB)
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qnxtypes.h
(624 B)
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qrtr.h
(893 B)
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quota.h
(6.14 KB)
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radeonfb.h
(360 B)
ðŸ“
raid
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random.h
(1.34 KB)
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raw.h
(365 B)
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rds.h
(9.08 KB)
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reboot.h
(1.31 KB)
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reiserfs_fs.h
(775 B)
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reiserfs_xattr.h
(533 B)
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resource.h
(2.29 KB)
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rfkill.h
(6.45 KB)
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rio_cm_cdev.h
(3.17 KB)
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rio_mport_cdev.h
(9.11 KB)
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romfs_fs.h
(1.21 KB)
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rose.h
(2.18 KB)
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route.h
(2.28 KB)
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rpmsg.h
(544 B)
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rseq.h
(4.79 KB)
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rtc.h
(3.92 KB)
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rtnetlink.h
(19.73 KB)
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rxrpc.h
(4.96 KB)
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scc.h
(4.49 KB)
ðŸ“
sched
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sched.h
(2.73 KB)
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scif_ioctl.h
(6.23 KB)
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screen_info.h
(2.42 KB)
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sctp.h
(35.15 KB)
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sdla.h
(2.77 KB)
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seccomp.h
(2.2 KB)
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securebits.h
(2.64 KB)
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sed-opal.h
(3.2 KB)
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seg6.h
(1.14 KB)
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seg6_genl.h
(589 B)
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seg6_hmac.h
(423 B)
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seg6_iptunnel.h
(927 B)
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seg6_local.h
(2.01 KB)
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selinux_netlink.h
(1.17 KB)
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sem.h
(2.97 KB)
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serial.h
(3.78 KB)
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serial_core.h
(6.1 KB)
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serial_reg.h
(15.13 KB)
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serio.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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socket.h
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sockios.h
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sonet.h
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sonypi.h
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sound.h
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spi
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stat.h
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stddef.h
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stm.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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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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time.h
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time_types.h
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timerfd.h
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times.h
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timex.h
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tiocl.h
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tipc.h
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tipc_config.h
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tipc_netlink.h
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tipc_sockets_diag.h
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tls.h
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toshiba.h
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tty.h
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tty_flags.h
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types.h
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udf_fs_i.h
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udp.h
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uhid.h
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uinput.h
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uio.h
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uleds.h
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ultrasound.h
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un.h
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unistd.h
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unix_diag.h
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usb
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usbdevice_fs.h
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usbip.h
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userfaultfd.h
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userio.h
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utime.h
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utsname.h
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uuid.h
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uvcvideo.h
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v4l2-common.h
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v4l2-controls.h
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v4l2-dv-timings.h
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v4l2-mediabus.h
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v4l2-subdev.h
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vbox_err.h
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vbox_vmmdev_types.h
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vboxguest.h
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vdpa.h
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version.h
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veth.h
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vfio.h
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vfio_ccw.h
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vfio_zdev.h
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vhost.h
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vhost_types.h
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videodev2.h
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virtio_9p.h
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virtio_balloon.h
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virtio_blk.h
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virtio_bt.h
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virtio_config.h
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virtio_console.h
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virtio_crypto.h
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virtio_fs.h
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virtio_gpu.h
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virtio_ids.h
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virtio_input.h
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virtio_iommu.h
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virtio_mem.h
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virtio_mmio.h
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virtio_net.h
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virtio_pci.h
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virtio_ring.h
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virtio_rng.h
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virtio_scsi.h
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virtio_snd.h
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virtio_types.h
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virtio_vsock.h
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vm_sockets.h
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vm_sockets_diag.h
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vmcore.h
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vsockmon.h
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vt.h
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vtpm_proxy.h
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wait.h
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wanrouter.h
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watchdog.h
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wimax.h
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wireless.h
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wmi.h
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x25.h
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xattr.h
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xdp_diag.h
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xfrm.h
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xilinx-v4l2-controls.h
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zorro.h
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zorro_ids.h
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Editing: bcache.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_BCACHE_H #define _LINUX_BCACHE_H /* * Bcache on disk data structures */ #include <linux/types.h> #define BITMASK(name, type, field, offset, size) \ static __inline__ __u64 name(const type *k) \ { return (k->field >> offset) & ~(~0ULL << size); } \ \ static __inline__ void SET_##name(type *k, __u64 v) \ { \ k->field &= ~(~(~0ULL << size) << offset); \ k->field |= (v & ~(~0ULL << size)) << offset; \ } /* Btree keys - all units are in sectors */ struct bkey { __u64 high; __u64 low; __u64 ptr[]; }; #define KEY_FIELD(name, field, offset, size) \ BITMASK(name, struct bkey, field, offset, size) #define PTR_FIELD(name, offset, size) \ static __inline__ __u64 name(const struct bkey *k, unsigned i) \ { return (k->ptr[i] >> offset) & ~(~0ULL << size); } \ \ static __inline__ void SET_##name(struct bkey *k, unsigned i, __u64 v) \ { \ k->ptr[i] &= ~(~(~0ULL << size) << offset); \ k->ptr[i] |= (v & ~(~0ULL << size)) << offset; \ } #define KEY_SIZE_BITS 16 #define KEY_MAX_U64S 8 KEY_FIELD(KEY_PTRS, high, 60, 3) KEY_FIELD(HEADER_SIZE, high, 58, 2) KEY_FIELD(KEY_CSUM, high, 56, 2) KEY_FIELD(KEY_PINNED, high, 55, 1) KEY_FIELD(KEY_DIRTY, high, 36, 1) KEY_FIELD(KEY_SIZE, high, 20, KEY_SIZE_BITS) KEY_FIELD(KEY_INODE, high, 0, 20) /* Next time I change the on disk format, KEY_OFFSET() won't be 64 bits */ static __inline__ __u64 KEY_OFFSET(const struct bkey *k) { return k->low; } static __inline__ void SET_KEY_OFFSET(struct bkey *k, __u64 v) { k->low = v; } /* * The high bit being set is a relic from when we used it to do binary * searches - it told you where a key started. It's not used anymore, * and can probably be safely dropped. */ #define KEY(inode, offset, size) \ ((struct bkey) { \ .high = (1ULL << 63) | ((__u64) (size) << 20) | (inode), \ .low = (offset) \ }) #define ZERO_KEY KEY(0, 0, 0) #define MAX_KEY_INODE (~(~0 << 20)) #define MAX_KEY_OFFSET (~0ULL >> 1) #define MAX_KEY KEY(MAX_KEY_INODE, MAX_KEY_OFFSET, 0) #define KEY_START(k) (KEY_OFFSET(k) - KEY_SIZE(k)) #define START_KEY(k) KEY(KEY_INODE(k), KEY_START(k), 0) #define PTR_DEV_BITS 12 PTR_FIELD(PTR_DEV, 51, PTR_DEV_BITS) PTR_FIELD(PTR_OFFSET, 8, 43) PTR_FIELD(PTR_GEN, 0, 8) #define PTR_CHECK_DEV ((1 << PTR_DEV_BITS) - 1) #define MAKE_PTR(gen, offset, dev) \ ((((__u64) dev) << 51) | ((__u64) offset) << 8 | gen) /* Bkey utility code */ static __inline__ unsigned long bkey_u64s(const struct bkey *k) { return (sizeof(struct bkey) / sizeof(__u64)) + KEY_PTRS(k); } static __inline__ unsigned long bkey_bytes(const struct bkey *k) { return bkey_u64s(k) * sizeof(__u64); } #define bkey_copy(_dest, _src) memcpy(_dest, _src, bkey_bytes(_src)) static __inline__ void bkey_copy_key(struct bkey *dest, const struct bkey *src) { SET_KEY_INODE(dest, KEY_INODE(src)); SET_KEY_OFFSET(dest, KEY_OFFSET(src)); } static __inline__ struct bkey *bkey_next(const struct bkey *k) { __u64 *d = (void *) k; return (struct bkey *) (d + bkey_u64s(k)); } static __inline__ struct bkey *bkey_idx(const struct bkey *k, unsigned nr_keys) { __u64 *d = (void *) k; return (struct bkey *) (d + nr_keys); } /* Enough for a key with 6 pointers */ #define BKEY_PAD 8 #define BKEY_PADDED(key) \ union { struct bkey key; __u64 key ## _pad[BKEY_PAD]; } /* Superblock */ /* Version 0: Cache device * Version 1: Backing device * Version 2: Seed pointer into btree node checksum * Version 3: Cache device with new UUID format * Version 4: Backing device with data offset */ #define BCACHE_SB_VERSION_CDEV 0 #define BCACHE_SB_VERSION_BDEV 1 #define BCACHE_SB_VERSION_CDEV_WITH_UUID 3 #define BCACHE_SB_VERSION_BDEV_WITH_OFFSET 4 #define BCACHE_SB_MAX_VERSION 4 #define SB_SECTOR 8 #define SB_SIZE 4096 #define SB_LABEL_SIZE 32 #define SB_JOURNAL_BUCKETS 256U /* SB_JOURNAL_BUCKETS must be divisible by BITS_PER_LONG */ #define MAX_CACHES_PER_SET 8 #define BDEV_DATA_START_DEFAULT 16 /* sectors */ struct cache_sb { __u64 csum; __u64 offset; /* sector where this sb was written */ __u64 version; __u8 magic[16]; __u8 uuid[16]; union { __u8 set_uuid[16]; __u64 set_magic; }; __u8 label[SB_LABEL_SIZE]; __u64 flags; __u64 seq; __u64 pad[8]; union { struct { /* Cache devices */ __u64 nbuckets; /* device size */ __u16 block_size; /* sectors */ __u16 bucket_size; /* sectors */ __u16 nr_in_set; __u16 nr_this_dev; }; struct { /* Backing devices */ __u64 data_offset; /* * block_size from the cache device section is still used by * backing devices, so don't add anything here until we fix * things to not need it for backing devices anymore */ }; }; __u32 last_mount; /* time_t */ __u16 first_bucket; union { __u16 njournal_buckets; __u16 keys; }; __u64 d[SB_JOURNAL_BUCKETS]; /* journal buckets */ }; static __inline__ _Bool SB_IS_BDEV(const struct cache_sb *sb) { return sb->version == BCACHE_SB_VERSION_BDEV || sb->version == BCACHE_SB_VERSION_BDEV_WITH_OFFSET; } BITMASK(CACHE_SYNC, struct cache_sb, flags, 0, 1); BITMASK(CACHE_DISCARD, struct cache_sb, flags, 1, 1); BITMASK(CACHE_REPLACEMENT, struct cache_sb, flags, 2, 3); #define CACHE_REPLACEMENT_LRU 0U #define CACHE_REPLACEMENT_FIFO 1U #define CACHE_REPLACEMENT_RANDOM 2U BITMASK(BDEV_CACHE_MODE, struct cache_sb, flags, 0, 4); #define CACHE_MODE_WRITETHROUGH 0U #define CACHE_MODE_WRITEBACK 1U #define CACHE_MODE_WRITEAROUND 2U #define CACHE_MODE_NONE 3U BITMASK(BDEV_STATE, struct cache_sb, flags, 61, 2); #define BDEV_STATE_NONE 0U #define BDEV_STATE_CLEAN 1U #define BDEV_STATE_DIRTY 2U #define BDEV_STATE_STALE 3U /* * Magic numbers * * The various other data structures have their own magic numbers, which are * xored with the first part of the cache set's UUID */ #define JSET_MAGIC 0x245235c1a3625032ULL #define PSET_MAGIC 0x6750e15f87337f91ULL #define BSET_MAGIC 0x90135c78b99e07f5ULL static __inline__ __u64 jset_magic(struct cache_sb *sb) { return sb->set_magic ^ JSET_MAGIC; } static __inline__ __u64 pset_magic(struct cache_sb *sb) { return sb->set_magic ^ PSET_MAGIC; } static __inline__ __u64 bset_magic(struct cache_sb *sb) { return sb->set_magic ^ BSET_MAGIC; } /* * Journal * * On disk format for a journal entry: * seq is monotonically increasing; every journal entry has its own unique * sequence number. * * last_seq is the oldest journal entry that still has keys the btree hasn't * flushed to disk yet. * * version is for on disk format changes. */ #define BCACHE_JSET_VERSION_UUIDv1 1 #define BCACHE_JSET_VERSION_UUID 1 /* Always latest UUID format */ #define BCACHE_JSET_VERSION 1 struct jset { __u64 csum; __u64 magic; __u64 seq; __u32 version; __u32 keys; __u64 last_seq; BKEY_PADDED(uuid_bucket); BKEY_PADDED(btree_root); __u16 btree_level; __u16 pad[3]; __u64 prio_bucket[MAX_CACHES_PER_SET]; union { struct bkey start[0]; __u64 d[0]; }; }; /* Bucket prios/gens */ struct prio_set { __u64 csum; __u64 magic; __u64 seq; __u32 version; __u32 pad; __u64 next_bucket; struct bucket_disk { __u16 prio; __u8 gen; } __attribute((packed)) data[]; }; /* UUIDS - per backing device/flash only volume metadata */ struct uuid_entry { union { struct { __u8 uuid[16]; __u8 label[32]; __u32 first_reg; __u32 last_reg; __u32 invalidated; __u32 flags; /* Size of flash only volumes */ __u64 sectors; }; __u8 pad[128]; }; }; BITMASK(UUID_FLASH_ONLY, struct uuid_entry, flags, 0, 1); /* Btree nodes */ /* Version 1: Seed pointer into btree node checksum */ #define BCACHE_BSET_CSUM 1 #define BCACHE_BSET_VERSION 1 /* * Btree nodes * * On disk a btree node is a list/log of these; within each set the keys are * sorted */ struct bset { __u64 csum; __u64 magic; __u64 seq; __u32 version; __u32 keys; union { struct bkey start[0]; __u64 d[0]; }; }; /* OBSOLETE */ /* UUIDS - per backing device/flash only volume metadata */ struct uuid_entry_v0 { __u8 uuid[16]; __u8 label[32]; __u32 first_reg; __u32 last_reg; __u32 invalidated; __u32 pad; }; #endif /* _LINUX_BCACHE_H */
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