ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / include / linux

#ifndef _LINUX_MSDOS_FS_H
#define _LINUX_MSDOS_FS_H

#include <linux/types.h>
#include <linux/magic.h>
#include <asm/byteorder.h>

/*
 * The MS-DOS filesystem constants/structures
 */

#define SECTOR_SIZE	512		/* sector size (bytes) */
#define SECTOR_BITS	9		/* log2(SECTOR_SIZE) */
#define MSDOS_DPB	(MSDOS_DPS)	/* dir entries per block */
#define MSDOS_DPB_BITS	4		/* log2(MSDOS_DPB) */
#define MSDOS_DPS	(SECTOR_SIZE / sizeof(struct msdos_dir_entry))
#define MSDOS_DPS_BITS	4		/* log2(MSDOS_DPS) */
#define MSDOS_LONGNAME	256		/* maximum name length */
#define CF_LE_W(v)	le16_to_cpu(v)
#define CF_LE_L(v)	le32_to_cpu(v)
#define CT_LE_W(v)	cpu_to_le16(v)
#define CT_LE_L(v)	cpu_to_le32(v)

#define MSDOS_ROOT_INO	 1	/* The root inode number */
#define MSDOS_FSINFO_INO 2	/* Used for managing the FSINFO block */

#define MSDOS_DIR_BITS	5	/* log2(sizeof(struct msdos_dir_entry)) */

/* directory limit */
#define FAT_MAX_DIR_ENTRIES	(65536)
#define FAT_MAX_DIR_SIZE	(FAT_MAX_DIR_ENTRIES << MSDOS_DIR_BITS)

#define ATTR_NONE	0	/* no attribute bits */
#define ATTR_RO		1	/* read-only */
#define ATTR_HIDDEN	2	/* hidden */
#define ATTR_SYS	4	/* system */
#define ATTR_VOLUME	8	/* volume label */
#define ATTR_DIR	16	/* directory */
#define ATTR_ARCH	32	/* archived */

/* attribute bits that are copied "as is" */
#define ATTR_UNUSED	(ATTR_VOLUME | ATTR_ARCH | ATTR_SYS | ATTR_HIDDEN)
/* bits that are used by the Windows 95/Windows NT extended FAT */
#define ATTR_EXT	(ATTR_RO | ATTR_HIDDEN | ATTR_SYS | ATTR_VOLUME)

#define CASE_LOWER_BASE	8	/* base is lower case */
#define CASE_LOWER_EXT	16	/* extension is lower case */

#define DELETED_FLAG	0xe5	/* marks file as deleted when in name[0] */
#define IS_FREE(n)	(!*(n) || *(n) == DELETED_FLAG)

#define FAT_LFN_LEN	255	/* maximum long name length */
#define MSDOS_NAME	11	/* maximum name length */
#define MSDOS_SLOTS	21	/* max # of slots for short and long names */
#define MSDOS_DOT	".          "	/* ".", padded to MSDOS_NAME chars */
#define MSDOS_DOTDOT	"..         "	/* "..", padded to MSDOS_NAME chars */

#define FAT_FIRST_ENT(s, x)	((MSDOS_SB(s)->fat_bits == 32 ? 0x0FFFFF00 : \
	MSDOS_SB(s)->fat_bits == 16 ? 0xFF00 : 0xF00) | (x))

/* start of data cluster's entry (number of reserved clusters) */
#define FAT_START_ENT	2

/* maximum number of clusters */
#define MAX_FAT12	0xFF4
#define MAX_FAT16	0xFFF4
#define MAX_FAT32	0x0FFFFFF6
#define MAX_FAT(s)	(MSDOS_SB(s)->fat_bits == 32 ? MAX_FAT32 : \
	MSDOS_SB(s)->fat_bits == 16 ? MAX_FAT16 : MAX_FAT12)

/* bad cluster mark */
#define BAD_FAT12	0xFF7
#define BAD_FAT16	0xFFF7
#define BAD_FAT32	0x0FFFFFF7

/* standard EOF */
#define EOF_FAT12	0xFFF
#define EOF_FAT16	0xFFFF
#define EOF_FAT32	0x0FFFFFFF

#define FAT_ENT_FREE	(0)
#define FAT_ENT_BAD	(BAD_FAT32)
#define FAT_ENT_EOF	(EOF_FAT32)

#define FAT_FSINFO_SIG1	0x41615252
#define FAT_FSINFO_SIG2	0x61417272
#define IS_FSINFO(x)	(le32_to_cpu((x)->signature1) == FAT_FSINFO_SIG1 \
			 && le32_to_cpu((x)->signature2) == FAT_FSINFO_SIG2)

#define FAT_STATE_DIRTY 0x01

struct __fat_dirent {
	long		d_ino;
	__kernel_off_t	d_off;
	unsigned short	d_reclen;
	char		d_name[256]; /* We must not include limits.h! */
};

/*
 * ioctl commands
 */
#define VFAT_IOCTL_READDIR_BOTH		_IOR('r', 1, struct __fat_dirent[2])
#define VFAT_IOCTL_READDIR_SHORT	_IOR('r', 2, struct __fat_dirent[2])
/* <linux/videotext.h> has used 0x72 ('r') in collision, so skip a few */
#define FAT_IOCTL_GET_ATTRIBUTES	_IOR('r', 0x10, __u32)
#define FAT_IOCTL_SET_ATTRIBUTES	_IOW('r', 0x11, __u32)

struct fat_boot_sector {
	__u8	ignored[3];	/* Boot strap short or near jump */
	__u8	system_id[8];	/* Name - can be used to special case
				   partition manager volumes */
	__u8	sector_size[2];	/* bytes per logical sector */
	__u8	sec_per_clus;	/* sectors/cluster */
	__le16	reserved;	/* reserved sectors */
	__u8	fats;		/* number of FATs */
	__u8	dir_entries[2];	/* root directory entries */
	__u8	sectors[2];	/* number of sectors */
	__u8	media;		/* media code */
	__le16	fat_length;	/* sectors/FAT */
	__le16	secs_track;	/* sectors per track */
	__le16	heads;		/* number of heads */
	__le32	hidden;		/* hidden sectors (unused) */
	__le32	total_sect;	/* number of sectors (if sectors == 0) */

union {
		struct {
			/*  Extended BPB Fields for FAT16 */
			__u8	drive_number;	/* Physical drive number */
			__u8	state;		/* undocumented, but used
						   for mount state. */
			/* other fiealds are not added here */
		} fat16;

struct {
			/* only used by FAT32 */
			__le32	length;		/* sectors/FAT */
			__le16	flags;		/* bit 8: fat mirroring,
						   low 4: active fat */
			__u8	version[2];	/* major, minor filesystem
						   version */
			__le32	root_cluster;	/* first cluster in
						   root directory */
			__le16	info_sector;	/* filesystem info sector */
			__le16	backup_boot;	/* backup boot sector */
			__le16	reserved2[6];	/* Unused */
			/* Extended BPB Fields for FAT32 */
			__u8	drive_number;   /* Physical drive number */
			__u8    state;       	/* undocumented, but used
						   for mount state. */
			/* other fiealds are not added here */
		} fat32;
	};
};

struct fat_boot_fsinfo {
	__le32   signature1;	/* 0x41615252L */
	__le32   reserved1[120];	/* Nothing as far as I can tell */
	__le32   signature2;	/* 0x61417272L */
	__le32   free_clusters;	/* Free cluster count.  -1 if unknown */
	__le32   next_cluster;	/* Most recently allocated cluster */
	__le32   reserved2[4];
};

struct msdos_dir_entry {
	__u8	name[MSDOS_NAME];/* name and extension */
	__u8	attr;		/* attribute bits */
	__u8    lcase;		/* Case for base and extension */
	__u8	ctime_cs;	/* Creation time, centiseconds (0-199) */
	__le16	ctime;		/* Creation time */
	__le16	cdate;		/* Creation date */
	__le16	adate;		/* Last access date */
	__le16	starthi;	/* High 16 bits of cluster in FAT32 */
	__le16	time,date,start;/* time, date and first cluster */
	__le32	size;		/* file size (in bytes) */
};

/* Up to 13 characters of the name */
struct msdos_dir_slot {
	__u8    id;		/* sequence number for slot */
	__u8    name0_4[10];	/* first 5 characters in name */
	__u8    attr;		/* attribute byte */
	__u8    reserved;	/* always 0 */
	__u8    alias_checksum;	/* checksum for 8.3 alias */
	__u8    name5_10[12];	/* 6 more characters in name */
	__le16   start;		/* starting cluster number, 0 in long slots */
	__u8    name11_12[4];	/* last 2 characters in name */
};

#endif /* _LINUX_MSDOS_FS_H */

[+] ..
[-] sysinfo.h [edit]
[-] mroute.h [edit]
[-] if_eql.h [edit]
[-] serial_core.h [edit]
[-] membarrier.h [edit]
[-] sched.h [edit]
[-] mei.h [edit]
[-] bfs_fs.h [edit]
[-] atmlec.h [edit]
[-] v4l2-mediabus.h [edit]
[-] videodev2.h [edit]
[-] screen_info.h [edit]
[-] if_slip.h [edit]
[-] uuid.h [edit]
[-] version.h [edit]
[-] ipv6_route.h [edit]
[-] ixjuser.h [edit]
[-] pkt_cls.h [edit]
[-] atm_he.h [edit]
[-] raw.h [edit]
[-] msdos_fs.h [edit]
[-] mman.h [edit]
[-] aio_abi.h [edit]
[-] reboot.h [edit]
[-] snmp.h [edit]
[-] atm_eni.h [edit]
[-] netfilter_bridge.h [edit]
[-] patchkey.h [edit]
[-] string.h [edit]
[-] socket.h [edit]
[+] spi
[-] auxvec.h [edit]
[-] sockios.h [edit]
[-] keyboard.h [edit]
[-] scc.h [edit]
[-] dn.h [edit]
[-] unistd.h [edit]
[-] oom.h [edit]
[-] pkt_sched.h [edit]
[-] if_phonet.h [edit]
[+] byteorder
[-] if_arcnet.h [edit]
[+] caif
[-] fd.h [edit]
[-] radeonfb.h [edit]
[-] qnx4_fs.h [edit]
[-] nfs2.h [edit]
[-] magic.h [edit]
[-] target_core_user.h [edit]
[-] atm_zatm.h [edit]
[-] pci.h [edit]
[-] nfsacl.h [edit]
[-] if_packet.h [edit]
[-] arcfb.h [edit]
[-] nfs_mount.h [edit]
[-] fib_rules.h [edit]
[-] atmsap.h [edit]
[+] dvb
[-] cciss_defs.h [edit]
[+] netfilter_ipv6
[-] atmdev.h [edit]
[-] kexec.h [edit]
[-] ipc.h [edit]
[-] sock_diag.h [edit]
[+] wimax
[-] serial.h [edit]
[-] if_link.h [edit]
[-] route.h [edit]
[-] if_bonding.h [edit]
[-] auto_fs.h [edit]
[-] pg.h [edit]
[-] l2tp.h [edit]
[-] perf_event.h [edit]
[-] tcp_metrics.h [edit]
[-] v4l2-controls.h [edit]
[-] personality.h [edit]
[-] dcbnl.h [edit]
[-] netfilter_arp.h [edit]
[-] toshiba.h [edit]
[-] memfd.h [edit]
[-] resource.h [edit]
[-] tipc.h [edit]
[-] virtio_vsock.h [edit]
[-] atm_tcp.h [edit]
[-] cn_proc.h [edit]
[-] utime.h [edit]
[-] nbd.h [edit]
[-] netfilter_ipv6.h [edit]
[-] meye.h [edit]
[-] gfs2_ondisk.h [edit]
[-] som.h [edit]
[-] ncp_mount.h [edit]
[-] coda.h [edit]
[-] hw_breakpoint.h [edit]
[-] shm.h [edit]
[-] wanrouter.h [edit]
[-] kernel-page-flags.h [edit]
[-] auto_fs4.h [edit]
[-] ppp_defs.h [edit]
[-] tty.h [edit]
[-] sysctl.h [edit]
[-] joystick.h [edit]
[-] ip.h [edit]
[-] jffs2.h [edit]
[-] nfs3.h [edit]
[-] if_infiniband.h [edit]
[-] agpgart.h [edit]
[+] raid
[-] blkpg.h [edit]
[-] virtio_ids.h [edit]
[-] udp.h [edit]
[-] swab.h [edit]
[-] romfs_fs.h [edit]
[-] fb.h [edit]
[-] kvm_para.h [edit]
[-] btrfs.h [edit]
[-] efs_fs_sb.h [edit]
[-] xfrm.h [edit]
[-] iso_fs.h [edit]
[-] serial_reg.h [edit]
[-] virtio_gpu.h [edit]
[-] sound.h [edit]
[-] errno.h [edit]
[-] kernelcapi.h [edit]
[-] net_tstamp.h [edit]
[-] isdnif.h [edit]
[-] hiddev.h [edit]
[-] ncp_fs.h [edit]
[-] hdlc.h [edit]
[-] fcntl.h [edit]
[-] if.h [edit]
[-] minix_fs.h [edit]
[-] hdreg.h [edit]
[-] virtio_9p.h [edit]
[-] coff.h [edit]
[-] elf-em.h [edit]
[-] mqueue.h [edit]
[+] tc_ematch
[-] gameport.h [edit]
[-] if_ether.h [edit]
[-] if_addrlabel.h [edit]
[-] ife.h [edit]
[-] isdn_divertif.h [edit]
[-] rds.h [edit]
[-] fdreg.h [edit]
[-] pmu.h [edit]
[-] cuda.h [edit]
[-] stat.h [edit]
[-] virtio_net.h [edit]
[-] posix_types.h [edit]
[-] cyclades.h [edit]
[-] baycom.h [edit]
[-] ipv6.h [edit]
[-] net_dropmon.h [edit]
[-] ipmi_msgdefs.h [edit]
[+] netfilter_arp
[-] v4l2-subdev.h [edit]
[-] vsockmon.h [edit]
[-] neighbour.h [edit]
[-] sctp.h [edit]
[-] atmppp.h [edit]
[-] usbdevice_fs.h [edit]
[-] dm-ioctl.h [edit]
[-] netconf.h [edit]
[-] v4l2-dv-timings.h [edit]
[-] chio.h [edit]
[-] msg.h [edit]
[+] netfilter_ipv4
[-] netlink.h [edit]
[-] genetlink.h [edit]
[-] cgroupstats.h [edit]
[-] i8k.h [edit]
[-] cciss_ioctl.h [edit]
[-] major.h [edit]
[-] nfs_fs.h [edit]
[-] rfkill.h [edit]
[-] atm.h [edit]
[-] fuse.h [edit]
[-] fsl_hypervisor.h [edit]
[-] atalk.h [edit]
[-] ivtv.h [edit]
[-] nfs4_mount.h [edit]
[-] pps.h [edit]
[-] nubus.h [edit]
[-] ethtool.h [edit]
[-] hpet.h [edit]
[-] atmmpc.h [edit]
[-] fou.h [edit]
[-] dccp.h [edit]
[-] if_pppox.h [edit]
[-] media.h [edit]
[-] dm-log-userspace.h [edit]
[-] ndctl.h [edit]
[-] wmi.h [edit]
[-] timex.h [edit]
[-] mii.h [edit]
[-] kd.h [edit]
[-] if_pppol2tp.h [edit]
[-] uinput.h [edit]
[-] time.h [edit]
[-] fadvise.h [edit]
[-] phonet.h [edit]
[-] dlm_device.h [edit]
[-] bpf_perf_event.h [edit]
[-] quota.h [edit]
[-] ppdev.h [edit]
[-] ivtvfb.h [edit]
[-] if_plip.h [edit]
[-] net_namespace.h [edit]
[-] ipmi.h [edit]
[-] vhost.h [edit]
[-] v4l2-common.h [edit]
[-] ultrasound.h [edit]
[-] lp.h [edit]
[-] wireless.h [edit]
[-] keyctl.h [edit]
[-] atm_idt77105.h [edit]
[-] bt-bmc.h [edit]
[-] netrom.h [edit]
[-] rtc.h [edit]
[-] types.h [edit]
[-] qnxtypes.h [edit]
[-] affs_hardblocks.h [edit]
[-] if_ppp.h [edit]
[-] prctl.h [edit]
[-] firewire-cdev.h [edit]
[-] sdla.h [edit]
[-] atmbr2684.h [edit]
[-] falloc.h [edit]
[-] connector.h [edit]
[+] mmc
[-] rtnetlink.h [edit]
[-] tty_flags.h [edit]
[-] bpf.h [edit]
[-] watchdog.h [edit]
[-] bsg.h [edit]
[-] kernel.h [edit]
[-] reiserfs_fs.h [edit]
[+] can
[-] selinux_netlink.h [edit]
[-] hdlcdrv.h [edit]
[-] filter.h [edit]
[-] hidraw.h [edit]
[-] icmp.h [edit]
[-] uio.h [edit]
[-] if_ltalk.h [edit]
[-] ppp-ioctl.h [edit]
[-] vtpm_proxy.h [edit]
[-] elfcore.h [edit]
[-] limits.h [edit]
[-] if_tunnel.h [edit]
[-] if_fddi.h [edit]
[-] uvcvideo.h [edit]
[-] ioctl.h [edit]
[-] capi.h [edit]
[-] nvme_ioctl.h [edit]
[-] dlm.h [edit]
[-] tiocl.h [edit]
[-] inotify.h [edit]
[-] poll.h [edit]
[-] rose.h [edit]
[-] if_hippi.h [edit]
[-] matroxfb.h [edit]
[-] i2o-dev.h [edit]
[-] tipc_config.h [edit]
[-] ipsec.h [edit]
[-] dlm_netlink.h [edit]
[-] serio.h [edit]
[-] cdrom.h [edit]
[-] fanotify.h [edit]
[-] virtio_blk.h [edit]
[-] atmioc.h [edit]
[-] securebits.h [edit]
[-] bpf_common.h [edit]
[-] if_team.h [edit]
[-] omapfb.h [edit]
[-] pktcdvd.h [edit]
[-] phantom.h [edit]
[-] atmapi.h [edit]
[-] hyperv.h [edit]
[-] stddef.h [edit]
[-] vt.h [edit]
[-] cycx_cfm.h [edit]
[-] parport.h [edit]
[-] ptrace.h [edit]
[-] nfs.h [edit]
[-] if_bridge.h [edit]
[+] netfilter_bridge
[-] unix_diag.h [edit]
[-] times.h [edit]
[-] n_r3964.h [edit]
[-] nl80211.h [edit]
[-] kvm.h [edit]
[-] virtio_ring.h [edit]
[-] bpqether.h [edit]
[-] ip6_tunnel.h [edit]
[-] sem.h [edit]
[-] llc.h [edit]
[-] omap3isp.h [edit]
[-] virtio_types.h [edit]
[-] xattr.h [edit]
[-] netfilter.h [edit]
[-] edd.h [edit]
[-] inet_diag.h [edit]
[-] vfio.h [edit]
[-] un.h [edit]
[-] termios.h [edit]
[+] usb
[-] firewire-constants.h [edit]
[-] nfs4.h [edit]
[-] atmclip.h [edit]
[-] devlink.h [edit]
[-] ip_vs.h [edit]
[-] nfc.h [edit]
[-] flat.h [edit]
[-] elf.h [edit]
[-] if_x25.h [edit]
[-] mdio.h [edit]
[-] isdn_ppp.h [edit]
[+] isdn
[-] cm4000_cs.h [edit]
[-] nvram.h [edit]
[-] param.h [edit]
[-] dlm_plock.h [edit]
[-] virtio_balloon.h [edit]
[-] telephony.h [edit]
[-] dlmconstants.h [edit]
[-] tcp.h [edit]
[-] futex.h [edit]
[-] virtio_scsi.h [edit]
[-] net.h [edit]
[-] sonypi.h [edit]
[-] wait.h [edit]
[-] apm_bios.h [edit]
[-] if_macsec.h [edit]
[+] hsi
[-] gigaset_dev.h [edit]
[-] capability.h [edit]
[-] errqueue.h [edit]
[+] netfilter
[-] a.out.h [edit]
[-] utsname.h [edit]
[-] gen_stats.h [edit]
[-] kdev_t.h [edit]
[-] if_vlan.h [edit]
[-] lwtunnel.h [edit]
[-] uhid.h [edit]
[-] i2c-dev.h [edit]
[-] wimax.h [edit]
[-] openvswitch.h [edit]
[-] virtio_input.h [edit]
[-] sonet.h [edit]
[+] hdlc
[-] ppp-comp.h [edit]
[-] veth.h [edit]
[-] atmsvc.h [edit]
[-] netlink_diag.h [edit]
[-] hid.h [edit]
[-] const.h [edit]
[-] psample.h [edit]
[-] vm_sockets.h [edit]
[-] i2c.h [edit]
[-] synclink.h [edit]
[-] if_arp.h [edit]
[-] pfkeyv2.h [edit]
[-] virtio_config.h [edit]
[-] if_fc.h [edit]
[-] eventpoll.h [edit]
[-] binfmts.h [edit]
[-] soundcard.h [edit]
[-] in6.h [edit]
[-] b1lli.h [edit]
[-] suspend_ioctls.h [edit]
[-] loop.h [edit]
[-] seccomp.h [edit]
[-] blktrace_api.h [edit]
[-] adfs_fs.h [edit]
[-] netdevice.h [edit]
[-] virtio_console.h [edit]
[-] dqblk_xfs.h [edit]
[-] netfilter_decnet.h [edit]
[-] mmtimer.h [edit]
[-] can.h [edit]
[-] adb.h [edit]
[-] acct.h [edit]
[-] ax25.h [edit]
[-] coda_psdev.h [edit]
[-] elf-fdpic.h [edit]
[-] virtio_rng.h [edit]
[-] signal.h [edit]
[-] libc-compat.h [edit]
[-] taskstats.h [edit]
[-] ncp_no.h [edit]
[-] ipx.h [edit]
[-] userfaultfd.h [edit]
[-] mempolicy.h [edit]
[-] icmpv6.h [edit]
[-] atmarp.h [edit]
[-] if_frad.h [edit]
[-] signalfd.h [edit]
[-] irda.h [edit]
[-] fiemap.h [edit]
[-] virtio_pci.h [edit]
[-] if_cablemodem.h [edit]
[-] in_route.h [edit]
[-] mpls.h [edit]
[-] input.h [edit]
[-] nfs_idmap.h [edit]
[-] cramfs_fs.h [edit]
[-] ptp_clock.h [edit]
[-] audit.h [edit]
[-] if_tun.h [edit]
[-] igmp.h [edit]
[-] if_alg.h [edit]
[-] random.h [edit]
[-] netfilter_ipv4.h [edit]
[-] atm_nicstar.h [edit]
[-] packet_diag.h [edit]
[-] x25.h [edit]
[+] tc_act
[-] in.h [edit]
[-] irqnr.h [edit]
[-] ncp.h [edit]
[-] reiserfs_xattr.h [edit]
[+] iio
[-] fs.h [edit]
[-] map_to_7segment.h [edit]
[+] sunrpc
[-] if_addr.h [edit]
[-] mtio.h [edit]
[+] nfsd
[-] hysdn_if.h [edit]
[-] pci_regs.h [edit]
[-] mroute6.h [edit]
[-] isdn.h [edit]
[-] udf_fs_i.h [edit]