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📁 ..
📄 a.out.h(7.15 KB)
📄 acct.h(3.58 KB)
📄 adb.h(1.05 KB)
📄 adfs_fs.h(873 B)
📄 affs_hardblocks.h(1.45 KB)
📄 agpgart.h(3.83 KB)
📄 aio_abi.h(3.1 KB)
📄 apm_bios.h(3.46 KB)
📄 arcfb.h(150 B)
📄 atalk.h(960 B)
📄 atm.h(7.64 KB)
📄 atm_eni.h(585 B)
📄 atm_he.h(343 B)
📄 atm_idt77105.h(892 B)
📄 atm_nicstar.h(1.19 KB)
📄 atm_tcp.h(1.52 KB)
📄 atm_zatm.h(1.57 KB)
📄 atmapi.h(889 B)
📄 atmarp.h(1.2 KB)
📄 atmbr2684.h(3.13 KB)
📄 atmclip.h(513 B)
📄 atmdev.h(7.44 KB)
📄 atmioc.h(1.55 KB)
📄 atmlec.h(2.26 KB)
📄 atmmpc.h(4.07 KB)
📄 atmppp.h(576 B)
📄 atmsap.h(4.79 KB)
📄 atmsvc.h(1.75 KB)
📄 audit.h(18.03 KB)
📄 auto_fs.h(2.53 KB)
📄 auto_fs4.h(4.3 KB)
📄 auxvec.h(1.4 KB)
📄 ax25.h(2.7 KB)
📄 b1lli.h(1.62 KB)
📄 baycom.h(820 B)
📄 bfs_fs.h(1.79 KB)
📄 binfmts.h(565 B)
📄 blkpg.h(1.53 KB)
📄 blktrace_api.h(4.38 KB)
📄 bpf.h(22.04 KB)
📄 bpf_common.h(1.2 KB)
📄 bpf_perf_event.h(453 B)
📄 bpqether.h(952 B)
📄 bsg.h(2.37 KB)
📄 bt-bmc.h(508 B)
📄 btrfs.h(25.07 KB)
📁 byteorder
📁 caif
📁 can
📄 can.h(5.46 KB)
📄 capability.h(11.25 KB)
📄 capi.h(2.99 KB)
📄 cciss_defs.h(3.14 KB)
📄 cciss_ioctl.h(2.63 KB)
📄 cdrom.h(28.12 KB)
📄 cgroupstats.h(2.1 KB)
📄 chio.h(5.16 KB)
📄 cm4000_cs.h(1.68 KB)
📄 cn_proc.h(3.19 KB)
📄 coda.h(17.09 KB)
📄 coda_psdev.h(720 B)
📄 coff.h(12.12 KB)
📄 connector.h(2.14 KB)
📄 const.h(673 B)
📄 cramfs_fs.h(2.68 KB)
📄 cuda.h(842 B)
📄 cyclades.h(16.65 KB)
📄 cycx_cfm.h(2.86 KB)
📄 dcbnl.h(24.5 KB)
📄 dccp.h(6.22 KB)
📄 devlink.h(9.66 KB)
📄 dlm.h(2.43 KB)
📄 dlm_device.h(2.42 KB)
📄 dlm_netlink.h(1.04 KB)
📄 dlm_plock.h(831 B)
📄 dlmconstants.h(4.9 KB)
📄 dm-ioctl.h(10.55 KB)
📄 dm-log-userspace.h(14.82 KB)
📄 dn.h(4.42 KB)
📄 dqblk_xfs.h(8.72 KB)
📁 dvb
📄 edd.h(5.41 KB)
📄 efs_fs_sb.h(2.11 KB)
📄 elf-em.h(1.83 KB)
📄 elf-fdpic.h(1.04 KB)
📄 elf.h(12.69 KB)
📄 elfcore.h(2.86 KB)
📄 errno.h(23 B)
📄 errqueue.h(1.1 KB)
📄 ethtool.h(71.11 KB)
📄 eventpoll.h(1.76 KB)
📄 fadvise.h(779 B)
📄 falloc.h(2.72 KB)
📄 fanotify.h(3.52 KB)
📄 fb.h(16 KB)
📄 fcntl.h(2.16 KB)
📄 fd.h(11.31 KB)
📄 fdreg.h(5.23 KB)
📄 fib_rules.h(1.58 KB)
📄 fiemap.h(2.65 KB)
📄 filter.h(1.99 KB)
📄 firewire-cdev.h(42.86 KB)
📄 firewire-constants.h(3.16 KB)
📄 flat.h(2.04 KB)
📄 fou.h(617 B)
📄 fs.h(8.47 KB)
📄 fsl_hypervisor.h(7.05 KB)
📄 fuse.h(16.41 KB)
📄 futex.h(4.81 KB)
📄 gameport.h(834 B)
📄 gen_stats.h(1.5 KB)
📄 genetlink.h(1.82 KB)
📄 gfs2_ondisk.h(12 KB)
📄 gigaset_dev.h(1.35 KB)
📁 hdlc
📄 hdlc.h(574 B)
📄 hdlcdrv.h(2.78 KB)
📄 hdreg.h(22.11 KB)
📄 hid.h(1.79 KB)
📄 hiddev.h(6.13 KB)
📄 hidraw.h(1.41 KB)
📄 hpet.h(680 B)
📁 hsi
📄 hw_breakpoint.h(679 B)
📄 hyperv.h(10.22 KB)
📄 hysdn_if.h(1.29 KB)
📄 i2c-dev.h(2.37 KB)
📄 i2c.h(6.66 KB)
📄 i2o-dev.h(11.22 KB)
📄 i8k.h(1.4 KB)
📄 icmp.h(2.82 KB)
📄 icmpv6.h(3.82 KB)
📄 if.h(9.26 KB)
📄 if_addr.h(1.7 KB)
📄 if_addrlabel.h(658 B)
📄 if_alg.h(816 B)
📄 if_arcnet.h(3.63 KB)
📄 if_arp.h(6.3 KB)
📄 if_bonding.h(4.66 KB)
📄 if_bridge.h(6.46 KB)
📄 if_cablemodem.h(922 B)
📄 if_eql.h(1.26 KB)
📄 if_ether.h(7.25 KB)
📄 if_fc.h(1.63 KB)
📄 if_fddi.h(3.6 KB)
📄 if_frad.h(2.89 KB)
📄 if_hippi.h(4.07 KB)
📄 if_infiniband.h(1.13 KB)
📄 if_link.h(19.58 KB)
📄 if_ltalk.h(147 B)
📄 if_macsec.h(5.42 KB)
📄 if_packet.h(7.15 KB)
📄 if_phonet.h(361 B)
📄 if_plip.h(596 B)
📄 if_ppp.h(29 B)
📄 if_pppol2tp.h(3.18 KB)
📄 if_pppox.h(4.64 KB)
📄 if_slip.h(809 B)
📄 if_team.h(2.48 KB)
📄 if_tun.h(3.71 KB)
📄 if_tunnel.h(3.03 KB)
📄 if_vlan.h(1.69 KB)
📄 if_x25.h(817 B)
📄 ife.h(288 B)
📄 igmp.h(2.88 KB)
📁 iio
📄 in.h(9.36 KB)
📄 in6.h(6.97 KB)
📄 in_route.h(873 B)
📄 inet_diag.h(2.77 KB)
📄 inotify.h(2.85 KB)
📄 input.h(32.52 KB)
📄 ioctl.h(100 B)
📄 ip.h(3.47 KB)
📄 ip6_tunnel.h(1.67 KB)
📄 ip_vs.h(12.77 KB)
📄 ipc.h(1.99 KB)
📄 ipmi.h(14.63 KB)
📄 ipmi_msgdefs.h(3.21 KB)
📄 ipsec.h(884 B)
📄 ipv6.h(3.66 KB)
📄 ipv6_route.h(1.73 KB)
📄 ipx.h(1.79 KB)
📄 irda.h(7.31 KB)
📄 irqnr.h(104 B)
📁 isdn
📄 isdn.h(5.58 KB)
📄 isdn_divertif.h(1.11 KB)
📄 isdn_ppp.h(1.82 KB)
📄 isdnif.h(2.25 KB)
📄 iso_fs.h(6.29 KB)
📄 ivtv.h(2.89 KB)
📄 ivtvfb.h(1.12 KB)
📄 ixjuser.h(24.53 KB)
📄 jffs2.h(6.85 KB)
📄 joystick.h(3.5 KB)
📄 kd.h(6.04 KB)
📄 kdev_t.h(320 B)
📄 kernel-page-flags.h(788 B)
📄 kernel.h(375 B)
📄 kernelcapi.h(956 B)
📄 kexec.h(1.92 KB)
📄 keyboard.h(12.42 KB)
📄 keyctl.h(2.98 KB)
📄 kvm.h(33.89 KB)
📄 kvm_para.h(819 B)
📄 l2tp.h(4.98 KB)
📄 libc-compat.h(4.03 KB)
📄 limits.h(874 B)
📄 llc.h(2.98 KB)
📄 loop.h(2.31 KB)
📄 lp.h(3.72 KB)
📄 lwtunnel.h(839 B)
📄 magic.h(2.9 KB)
📄 major.h(4.48 KB)
📄 map_to_7segment.h(7.02 KB)
📄 matroxfb.h(1.37 KB)
📄 mdio.h(13.74 KB)
📄 media.h(3.5 KB)
📄 mei.h(4.62 KB)
📄 membarrier.h(7.71 KB)
📄 memfd.h(186 B)
📄 mempolicy.h(2.35 KB)
📄 meye.h(2.41 KB)
📄 mii.h(7.76 KB)
📄 minix_fs.h(2.01 KB)
📄 mman.h(230 B)
📁 mmc
📄 mmtimer.h(2.01 KB)
📄 mpls.h(1.33 KB)
📄 mqueue.h(2.01 KB)
📄 mroute.h(4.06 KB)
📄 mroute6.h(4.08 KB)
📄 msdos_fs.h(6.28 KB)
📄 msg.h(3.21 KB)
📄 mtio.h(7.92 KB)
📄 n_r3964.h(2.29 KB)
📄 nbd.h(2.34 KB)
📄 ncp.h(4.94 KB)
📄 ncp_fs.h(3.27 KB)
📄 ncp_mount.h(2.06 KB)
📄 ncp_no.h(651 B)
📄 ndctl.h(6.6 KB)
📄 neighbour.h(4.17 KB)
📄 net.h(1.97 KB)
📄 net_dropmon.h(1.07 KB)
📄 net_namespace.h(609 B)
📄 net_tstamp.h(4.06 KB)
📄 netconf.h(423 B)
📄 netdevice.h(1.46 KB)
📁 netfilter
📄 netfilter.h(1.6 KB)
📁 netfilter_arp
📄 netfilter_arp.h(380 B)
📁 netfilter_bridge
📄 netfilter_bridge.h(768 B)
📄 netfilter_decnet.h(1.83 KB)
📁 netfilter_ipv4
📄 netfilter_ipv4.h(2.02 KB)
📁 netfilter_ipv6
📄 netfilter_ipv6.h(2.04 KB)
📄 netlink.h(6.13 KB)
📄 netlink_diag.h(1005 B)
📄 netrom.h(744 B)
📄 nfc.h(7.72 KB)
📄 nfs.h(4.31 KB)
📄 nfs2.h(1.37 KB)
📄 nfs3.h(2.24 KB)
📄 nfs4.h(5.95 KB)
📄 nfs4_mount.h(1.83 KB)
📄 nfs_fs.h(1.51 KB)
📄 nfs_idmap.h(2.19 KB)
📄 nfs_mount.h(2.32 KB)
📄 nfsacl.h(605 B)
📁 nfsd
📄 nl80211.h(270.89 KB)
📄 nubus.h(8.17 KB)
📄 nvme_ioctl.h(1.55 KB)
📄 nvram.h(469 B)
📄 omap3isp.h(20.19 KB)
📄 omapfb.h(5.72 KB)
📄 oom.h(448 B)
📄 openvswitch.h(31.79 KB)
📄 packet_diag.h(1.5 KB)
📄 param.h(78 B)
📄 parport.h(3.56 KB)
📄 patchkey.h(829 B)
📄 pci.h(1.29 KB)
📄 pci_regs.h(50.79 KB)
📄 perf_event.h(31.96 KB)
📄 personality.h(1.99 KB)
📄 pfkeyv2.h(9.91 KB)
📄 pg.h(2.23 KB)
📄 phantom.h(1.55 KB)
📄 phonet.h(4.51 KB)
📄 pkt_cls.h(12.49 KB)
📄 pkt_sched.h(20.63 KB)
📄 pktcdvd.h(2.56 KB)
📄 pmu.h(5.13 KB)
📄 poll.h(22 B)
📄 posix_types.h(1.01 KB)
📄 ppdev.h(3.07 KB)
📄 ppp-comp.h(2.41 KB)
📄 ppp-ioctl.h(5.29 KB)
📄 ppp_defs.h(4.93 KB)
📄 pps.h(4.06 KB)
📄 prctl.h(6.75 KB)
📄 psample.h(735 B)
📄 ptp_clock.h(5.09 KB)
📄 ptrace.h(3.08 KB)
📄 qnx4_fs.h(2.21 KB)
📄 qnxtypes.h(561 B)
📄 quota.h(5.78 KB)
📄 radeonfb.h(297 B)
📁 raid
📄 random.h(1.2 KB)
📄 raw.h(302 B)
📄 rds.h(7.9 KB)
📄 reboot.h(1.25 KB)
📄 reiserfs_fs.h(712 B)
📄 reiserfs_xattr.h(470 B)
📄 resource.h(2.09 KB)
📄 rfkill.h(3.5 KB)
📄 romfs_fs.h(1.15 KB)
📄 rose.h(2.12 KB)
📄 route.h(2.21 KB)
📄 rtc.h(3.85 KB)
📄 rtnetlink.h(17.02 KB)
📄 scc.h(4.43 KB)
📄 sched.h(2.26 KB)
📄 screen_info.h(2.36 KB)
📄 sctp.h(29.53 KB)
📄 sdla.h(2.71 KB)
📄 seccomp.h(1.83 KB)
📄 securebits.h(2.58 KB)
📄 selinux_netlink.h(1.11 KB)
📄 sem.h(2.54 KB)
📄 serial.h(3.04 KB)
📄 serial_core.h(5.11 KB)
📄 serial_reg.h(15.66 KB)
📄 serio.h(1.81 KB)
📄 shm.h(2.19 KB)
📄 signal.h(171 B)
📄 signalfd.h(1.07 KB)
📄 snmp.h(12.42 KB)
📄 sock_diag.h(431 B)
📄 socket.h(738 B)
📄 sockios.h(5.83 KB)
📄 som.h(5.35 KB)
📄 sonet.h(2.17 KB)
📄 sonypi.h(5.12 KB)
📄 sound.h(1.15 KB)
📄 soundcard.h(44.96 KB)
📁 spi
📄 stat.h(1 KB)
📄 stddef.h(1 B)
📄 string.h(175 B)
📁 sunrpc
📄 suspend_ioctls.h(1.34 KB)
📄 swab.h(6.36 KB)
📄 synclink.h(8.71 KB)
📄 sysctl.h(25.46 KB)
📄 sysinfo.h(986 B)
📄 target_core_user.h(3.65 KB)
📄 taskstats.h(6.83 KB)
📁 tc_act
📁 tc_ematch
📄 tcp.h(5.93 KB)
📄 tcp_metrics.h(1.45 KB)
📄 telephony.h(8.84 KB)
📄 termios.h(443 B)
📄 time.h(1.54 KB)
📄 times.h(215 B)
📄 timex.h(6.17 KB)
📄 tiocl.h(1.63 KB)
📄 tipc.h(5.44 KB)
📄 tipc_config.h(14.1 KB)
📄 toshiba.h(1.24 KB)
📄 tty.h(1.33 KB)
📄 tty_flags.h(3.66 KB)
📄 types.h(1.4 KB)
📄 udf_fs_i.h(634 B)
📄 udp.h(1.28 KB)
📄 uhid.h(2.15 KB)
📄 uinput.h(5 KB)
📄 uio.h(668 B)
📄 ultrasound.h(4.39 KB)
📄 un.h(239 B)
📄 unistd.h(157 B)
📄 unix_diag.h(1.1 KB)
📁 usb
📄 usbdevice_fs.h(6.78 KB)
📄 userfaultfd.h(6.59 KB)
📄 utime.h(152 B)
📄 utsname.h(606 B)
📄 uuid.h(1.5 KB)
📄 uvcvideo.h(1.6 KB)
📄 v4l2-common.h(2.38 KB)
📄 v4l2-controls.h(37.34 KB)
📄 v4l2-dv-timings.h(25.75 KB)
📄 v4l2-mediabus.h(4.55 KB)
📄 v4l2-subdev.h(5.27 KB)
📄 version.h(332 B)
📄 veth.h(161 B)
📄 vfio.h(26.54 KB)
📄 vhost.h(7.13 KB)
📄 videodev2.h(67.36 KB)
📄 virtio_9p.h(1.99 KB)
📄 virtio_balloon.h(3.71 KB)
📄 virtio_blk.h(5.2 KB)
📄 virtio_config.h(3.34 KB)
📄 virtio_console.h(2.94 KB)
📄 virtio_gpu.h(8.23 KB)
📄 virtio_ids.h(2.32 KB)
📄 virtio_input.h(2.45 KB)
📄 virtio_net.h(9.5 KB)
📄 virtio_pci.h(6.63 KB)
📄 virtio_ring.h(6.18 KB)
📄 virtio_rng.h(265 B)
📄 virtio_scsi.h(5.13 KB)
📄 virtio_types.h(2.11 KB)
📄 virtio_vsock.h(3.01 KB)
📄 vm_sockets.h(5.13 KB)
📄 vsockmon.h(1.78 KB)
📄 vt.h(2.98 KB)
📄 vtpm_proxy.h(1.62 KB)
📄 wait.h(600 B)
📄 wanrouter.h(390 B)
📄 watchdog.h(2.22 KB)
📁 wimax
📄 wimax.h(8.17 KB)
📄 wireless.h(41.65 KB)
📄 wmi.h(1.84 KB)
📄 x25.h(3.42 KB)
📄 xattr.h(2.53 KB)
📄 xfrm.h(11 KB)

Editing: gfs2_ondisk.h

/*
 * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
 * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
 *
 * This copyrighted material is made available to anyone wishing to use,
 * modify, copy, or redistribute it subject to the terms and conditions
 * of the GNU General Public License v.2.
 */

#ifndef __GFS2_ONDISK_DOT_H__
#define __GFS2_ONDISK_DOT_H__

#include <linux/types.h>

#define GFS2_MAGIC		0x01161970
#define GFS2_BASIC_BLOCK	512
#define GFS2_BASIC_BLOCK_SHIFT	9

/* Lock numbers of the LM_TYPE_NONDISK type */

#define GFS2_MOUNT_LOCK		0
#define GFS2_LIVE_LOCK		1
#define GFS2_TRANS_LOCK		2
#define GFS2_RENAME_LOCK	3
#define GFS2_CONTROL_LOCK	4
#define GFS2_MOUNTED_LOCK	5

/* Format numbers for various metadata types */

#define GFS2_FORMAT_NONE	0
#define GFS2_FORMAT_SB		100
#define GFS2_FORMAT_RG		200
#define GFS2_FORMAT_RB		300
#define GFS2_FORMAT_DI		400
#define GFS2_FORMAT_IN		500
#define GFS2_FORMAT_LF		600
#define GFS2_FORMAT_JD		700
#define GFS2_FORMAT_LH		800
#define GFS2_FORMAT_LD		900
#define GFS2_FORMAT_LB		1000
#define GFS2_FORMAT_EA		1600
#define GFS2_FORMAT_ED		1700
#define GFS2_FORMAT_QC		1400
/* These are format numbers for entities contained in files */
#define GFS2_FORMAT_RI		1100
#define GFS2_FORMAT_DE		1200
#define GFS2_FORMAT_QU		1500
/* These are part of the superblock */
#define GFS2_FORMAT_FS		1801
#define GFS2_FORMAT_MULTI	1900

/*
 * An on-disk inode number
 */

struct gfs2_inum {
	__be64 no_formal_ino;
	__be64 no_addr;
};

/*
 * Generic metadata head structure
 * Every inplace buffer logged in the journal must start with this.
 */

#define GFS2_METATYPE_NONE	0
#define GFS2_METATYPE_SB	1
#define GFS2_METATYPE_RG	2
#define GFS2_METATYPE_RB	3
#define GFS2_METATYPE_DI	4
#define GFS2_METATYPE_IN	5
#define GFS2_METATYPE_LF	6
#define GFS2_METATYPE_JD	7
#define GFS2_METATYPE_LH	8
#define GFS2_METATYPE_LD	9
#define GFS2_METATYPE_LB	12
#define GFS2_METATYPE_EA	10
#define GFS2_METATYPE_ED	11
#define GFS2_METATYPE_QC	14

struct gfs2_meta_header {
	__be32 mh_magic;
	__be32 mh_type;
	__be64 __pad0;		/* Was generation number in gfs1 */
	__be32 mh_format;
	/* This union is to keep userspace happy */
	union {
		__be32 mh_jid;		/* Was incarnation number in gfs1 */
		__be32 __pad1;
	};
};

/*
 * super-block structure
 *
 * It's probably good if SIZEOF_SB <= GFS2_BASIC_BLOCK (512 bytes)
 *
 * Order is important, need to be able to read old superblocks to do on-disk
 * version upgrades.
 */

/* Address of superblock in GFS2 basic blocks */
#define GFS2_SB_ADDR		128

/* The lock number for the superblock (must be zero) */
#define GFS2_SB_LOCK		0

/* Requirement:  GFS2_LOCKNAME_LEN % 8 == 0
   Includes: the fencing zero at the end */
#define GFS2_LOCKNAME_LEN	64

struct gfs2_sb {
	struct gfs2_meta_header sb_header;

__be32 sb_fs_format;
	__be32 sb_multihost_format;
	__u32  __pad0;	/* Was superblock flags in gfs1 */

__be32 sb_bsize;
	__be32 sb_bsize_shift;
	__u32 __pad1;	/* Was journal segment size in gfs1 */

struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
	struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
	struct gfs2_inum sb_root_dir;

char sb_lockproto[GFS2_LOCKNAME_LEN];
	char sb_locktable[GFS2_LOCKNAME_LEN];

struct gfs2_inum __pad3; /* Was quota inode in gfs1 */
	struct gfs2_inum __pad4; /* Was licence inode in gfs1 */
#define GFS2_HAS_UUID 1
	__u8 sb_uuid[16]; /* The UUID, maybe 0 for backwards compat */
};

/*
 * resource index structure
 */

struct gfs2_rindex {
	__be64 ri_addr;	/* grp block disk address */
	__be32 ri_length;	/* length of rgrp header in fs blocks */
	__u32 __pad;

__be64 ri_data0;	/* first data location */
	__be32 ri_data;	/* num of data blocks in rgrp */

__be32 ri_bitbytes;	/* number of bytes in data bitmaps */

__u8 ri_reserved[64];
};

/*
 * resource group header structure
 */

/* Number of blocks per byte in rgrp */
#define GFS2_NBBY		4
#define GFS2_BIT_SIZE		2
#define GFS2_BIT_MASK		0x00000003

#define GFS2_BLKST_FREE		0
#define GFS2_BLKST_USED		1
#define GFS2_BLKST_UNLINKED	2
#define GFS2_BLKST_DINODE	3

#define GFS2_RGF_JOURNAL	0x00000001
#define GFS2_RGF_METAONLY	0x00000002
#define GFS2_RGF_DATAONLY	0x00000004
#define GFS2_RGF_NOALLOC	0x00000008
#define GFS2_RGF_TRIMMED	0x00000010

struct gfs2_rgrp_lvb {
	__be32 rl_magic;
	__be32 rl_flags;
	__be32 rl_free;
	__be32 rl_dinodes;
	__be64 rl_igeneration;
	__be32 rl_unlinked;
	__be32 __pad;
};

struct gfs2_rgrp {
	struct gfs2_meta_header rg_header;

__be32 rg_flags;
	__be32 rg_free;
	__be32 rg_dinodes;
	__be32 __pad;
	__be64 rg_igeneration;

__u8 rg_reserved[80]; /* Several fields from gfs1 now reserved */
};

/*
 * quota structure
 */

struct gfs2_quota {
	__be64 qu_limit;
	__be64 qu_warn;
	__be64 qu_value;
	__u8 qu_reserved[64];
};

/*
 * dinode structure
 */

#define GFS2_MAX_META_HEIGHT	10
#define GFS2_DIR_MAX_DEPTH	17

#define DT2IF(dt) (((dt) << 12) & S_IFMT)
#define IF2DT(sif) (((sif) & S_IFMT) >> 12)

enum {
	gfs2fl_Jdata		= 0,
	gfs2fl_ExHash		= 1,
	gfs2fl_Unused		= 2,
	gfs2fl_EaIndirect	= 3,
	gfs2fl_Directio		= 4,
	gfs2fl_Immutable	= 5,
	gfs2fl_AppendOnly	= 6,
	gfs2fl_NoAtime		= 7,
	gfs2fl_Sync		= 8,
	gfs2fl_System		= 9,
	gfs2fl_TopLevel		= 10,
	gfs2fl_TruncInProg	= 29,
	gfs2fl_InheritDirectio	= 30,
	gfs2fl_InheritJdata	= 31,
};

/* Dinode flags */
#define GFS2_DIF_JDATA			0x00000001
#define GFS2_DIF_EXHASH			0x00000002
#define GFS2_DIF_UNUSED			0x00000004  /* only in gfs1 */
#define GFS2_DIF_EA_INDIRECT		0x00000008
#define GFS2_DIF_DIRECTIO		0x00000010
#define GFS2_DIF_IMMUTABLE		0x00000020
#define GFS2_DIF_APPENDONLY		0x00000040
#define GFS2_DIF_NOATIME		0x00000080
#define GFS2_DIF_SYNC			0x00000100
#define GFS2_DIF_SYSTEM			0x00000200 /* New in gfs2 */
#define GFS2_DIF_TOPDIR			0x00000400 /* New in gfs2 */
#define GFS2_DIF_TRUNC_IN_PROG		0x20000000 /* New in gfs2 */
#define GFS2_DIF_INHERIT_DIRECTIO	0x40000000 /* only in gfs1 */
#define GFS2_DIF_INHERIT_JDATA		0x80000000

struct gfs2_dinode {
	struct gfs2_meta_header di_header;

struct gfs2_inum di_num;

__be32 di_mode;	/* mode of file */
	__be32 di_uid;	/* owner's user id */
	__be32 di_gid;	/* owner's group id */
	__be32 di_nlink;	/* number of links to this file */
	__be64 di_size;	/* number of bytes in file */
	__be64 di_blocks;	/* number of blocks in file */
	__be64 di_atime;	/* time last accessed */
	__be64 di_mtime;	/* time last modified */
	__be64 di_ctime;	/* time last changed */
	__be32 di_major;	/* device major number */
	__be32 di_minor;	/* device minor number */

/* This section varies from gfs1. Padding added to align with
         * remainder of dinode
	 */
	__be64 di_goal_meta;	/* rgrp to alloc from next */
	__be64 di_goal_data;	/* data block goal */
	__be64 di_generation;	/* generation number for NFS */

__be32 di_flags;	/* GFS2_DIF_... */
	__be32 di_payload_format;  /* GFS2_FORMAT_... */
	__u16 __pad1;	/* Was ditype in gfs1 */
	__be16 di_height;	/* height of metadata */
	__u32 __pad2;	/* Unused incarnation number from gfs1 */

/* These only apply to directories  */
	__u16 __pad3;	/* Padding */
	__be16 di_depth;	/* Number of bits in the table */
	__be32 di_entries;	/* The number of entries in the directory */

struct gfs2_inum __pad4; /* Unused even in current gfs1 */

__be64 di_eattr;	/* extended attribute block number */
	__be32 di_atime_nsec;   /* nsec portion of atime */
	__be32 di_mtime_nsec;   /* nsec portion of mtime */
	__be32 di_ctime_nsec;   /* nsec portion of ctime */

__u8 di_reserved[44];
};

/*
 * directory structure - many of these per directory file
 */

#define GFS2_FNAMESIZE		255
#define GFS2_DIRENT_SIZE(name_len) ((sizeof(struct gfs2_dirent) + (name_len) + 7) & ~7)
#define GFS2_MIN_DIRENT_SIZE (GFS2_DIRENT_SIZE(1))

struct gfs2_dirent {
	struct gfs2_inum de_inum;
	__be32 de_hash;
	__be16 de_rec_len;
	__be16 de_name_len;
	__be16 de_type;
	__be16 de_rahead;
	union {
		__u8 __pad[12];
		struct {
			__u32 de_cookie; /* ondisk value not used */
			__u8 pad3[8];
		};
	};
};

/*
 * Header of leaf directory nodes
 */

struct gfs2_leaf {
	struct gfs2_meta_header lf_header;

__be16 lf_depth;		/* Depth of leaf */
	__be16 lf_entries;		/* Number of dirents in leaf */
	__be32 lf_dirent_format;	/* Format of the dirents */
	__be64 lf_next;			/* Next leaf, if overflow */

union {
		__u8 lf_reserved[64];
		struct {
			__be64 lf_inode;	/* Dir inode number */
			__be32 lf_dist;		/* Dist from inode on chain */
			__be32 lf_nsec;		/* Last ins/del nsecs */
			__be64 lf_sec;		/* Last ins/del in secs */
			__u8 lf_reserved2[40];
		};
	};
};

/*
 * Extended attribute header format
 *
 * This works in a similar way to dirents. There is a fixed size header
 * followed by a variable length section made up of the name and the
 * associated data. In the case of a "stuffed" entry, the value is
 * __inline__ directly after the name, the ea_num_ptrs entry will be
 * zero in that case. For non-"stuffed" entries, there will be
 * a set of pointers (aligned to 8 byte boundary) to the block(s)
 * containing the value.
 *
 * The blocks containing the values and the blocks containing the
 * extended attribute headers themselves all start with the common
 * metadata header. Each inode, if it has extended attributes, will
 * have either a single block containing the extended attribute headers
 * or a single indirect block pointing to blocks containing the
 * extended attribure headers.
 *
 * The maximim size of the data part of an extended attribute is 64k
 * so the number of blocks required depends upon block size. Since the
 * block size also determines the number of pointers in an indirect
 * block, its a fairly complicated calculation to work out the maximum
 * number of blocks that an inode may have relating to extended attributes.
 *
 */

#define GFS2_EA_MAX_NAME_LEN	255
#define GFS2_EA_MAX_DATA_LEN	65536

#define GFS2_EATYPE_UNUSED	0
#define GFS2_EATYPE_USR		1
#define GFS2_EATYPE_SYS		2
#define GFS2_EATYPE_SECURITY	3

#define GFS2_EATYPE_LAST	3
#define GFS2_EATYPE_VALID(x)	((x) <= GFS2_EATYPE_LAST)

#define GFS2_EAFLAG_LAST	0x01	/* last ea in block */

struct gfs2_ea_header {
	__be32 ea_rec_len;
	__be32 ea_data_len;
	__u8 ea_name_len;	/* no NULL pointer after the string */
	__u8 ea_type;		/* GFS2_EATYPE_... */
	__u8 ea_flags;		/* GFS2_EAFLAG_... */
	__u8 ea_num_ptrs;
	__u32 __pad;
};

/*
 * Log header structure
 */

#define GFS2_LOG_HEAD_UNMOUNT	0x00000001	/* log is clean */

struct gfs2_log_header {
	struct gfs2_meta_header lh_header;

__be64 lh_sequence;	/* Sequence number of this transaction */
	__be32 lh_flags;	/* GFS2_LOG_HEAD_... */
	__be32 lh_tail;		/* Block number of log tail */
	__be32 lh_blkno;
	__be32 lh_hash;
};

/*
 * Log type descriptor
 */

#define GFS2_LOG_DESC_METADATA	300
/* ld_data1 is the number of metadata blocks in the descriptor.
   ld_data2 is unused. */

#define GFS2_LOG_DESC_REVOKE	301
/* ld_data1 is the number of revoke blocks in the descriptor.
   ld_data2 is unused. */

#define GFS2_LOG_DESC_JDATA	302
/* ld_data1 is the number of data blocks in the descriptor.
   ld_data2 is unused. */

struct gfs2_log_descriptor {
	struct gfs2_meta_header ld_header;

__be32 ld_type;		/* GFS2_LOG_DESC_... */
	__be32 ld_length;	/* Number of buffers in this chunk */
	__be32 ld_data1;	/* descriptor-specific field */
	__be32 ld_data2;	/* descriptor-specific field */

__u8 ld_reserved[32];
};

/*
 * Inum Range
 * Describe a range of formal inode numbers allocated to
 * one machine to assign to inodes.
 */

#define GFS2_INUM_QUANTUM	1048576

struct gfs2_inum_range {
	__be64 ir_start;
	__be64 ir_length;
};

/*
 * Statfs change
 * Describes an change to the pool of free and allocated
 * blocks.
 */

struct gfs2_statfs_change {
	__be64 sc_total;
	__be64 sc_free;
	__be64 sc_dinodes;
};

/*
 * Quota change
 * Describes an allocation change for a particular
 * user or group.
 */

#define GFS2_QCF_USER		0x00000001

struct gfs2_quota_change {
	__be64 qc_change;
	__be32 qc_flags;	/* GFS2_QCF_... */
	__be32 qc_id;
};

struct gfs2_quota_lvb {
        __be32 qb_magic;
        __u32 __pad;
        __be64 qb_limit;      /* Hard limit of # blocks to alloc */
        __be64 qb_warn;       /* Warn user when alloc is above this # */
        __be64 qb_value;       /* Current # blocks allocated */
};

#endif /* __GFS2_ONDISK_DOT_H__ */

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