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Re: [PATCH] Move NTFS compression support to new module ntfscomp
|
From: |
Robert Millan |
|
Subject: |
Re: [PATCH] Move NTFS compression support to new module ntfscomp |
|
Date: |
Sat, 15 Dec 2007 14:08:22 +0100 |
|
User-agent: |
Mutt/1.5.13 (2006-08-11) |
I just tested this with and without the module, on a filesystem with and
without compression (all 4 combinations) and didn't observe any oddities.
If nobody objects I'll check this in.
On Wed, Dec 12, 2007 at 11:56:36PM +0800, Bean wrote:
> Ok.
>
> 2007-12-12 Bean <address@hidden>
>
> * conf/common.rmk (pkgdata_MODULES): Add ntfscomp.mod.
> (ntfscomp_mod_SOURCES): New variable.
> (ntfscomp_mod_CFLAGS): Likewise.
> (ntfscomp_mod_LDFLAGS): Likewise.
>
> * conf/i386-pc.rmk (grub_setup_SOURCES): Add fs/ntfscomp.c.
> (grub_probe_SOURCES): Likewise.
> (grub_emu_SOURCES): Likewise.
>
> * conf/i386-efi.rmk (grub_probe_SOURCES): Add fs/ntfscomp.c.
> (grub_emu_SOURCES): Likewise.
>
> * conf/i386-linuxbios.rmk (grub_probe_SOURCES): Add fs/ntfscomp.c.
> (grub_emu_SOURCES): Likewise.
>
> * conf/powerpc-ieee1275.rmk (grub_probe_SOURCES): Add fs/ntfscomp.c.
> (grub_emu_SOURCES): Likewise.
>
> * fs/ntfs.c (grub_ntfscomp_func): New variable.
> (read_run_list): Renamed to grub_ntfs_read_run_list.
> (decomp_nextvcn): Moved to ntfscomp.c.
> (decomp_getch): Likewise.
> (decomp_get16): Likewise.
> (decomp_block): Likewise.
> (read_block): Likewise.
> (read_data): Partially moved to ntfscomp.c.
> (fixup): Change unsigned to grub_uint16_t.
> (read_mft): Change unsigned long to grub_uint32_t.
> (read_attr): Likewise.
> (read_data): Likewise.
> (read_run_data): Likewise.
> (read_run_list): Likewise.
> (read_mft): Likewise.
>
> * fs/ntfscomp.c: New file.
>
> * include/grub/ntfs.h: New file.
>
>
> Index: conf/common.rmk
> ===================================================================
> RCS file: /sources/grub/grub2/conf/common.rmk,v
> retrieving revision 1.17
> diff -u -p -r1.17 common.rmk
> --- conf/common.rmk 18 Nov 2007 06:41:45 -0000 1.17
> +++ conf/common.rmk 29 Nov 2007 18:23:10 -0000
> @@ -81,7 +81,7 @@ update-grub_DATA += util/grub.d/README
> # Filing systems.
> pkgdata_MODULES += fshelp.mod fat.mod ufs.mod ext2.mod ntfs.mod \
> minix.mod hfs.mod jfs.mod iso9660.mod xfs.mod affs.mod \
> - sfs.mod hfsplus.mod
> + sfs.mod hfsplus.mod ntfscomp.mod
>
> # For fshelp.mod.
> fshelp_mod_SOURCES = fs/fshelp.c
> @@ -108,6 +108,11 @@ ntfs_mod_SOURCES = fs/ntfs.c
> ntfs_mod_CFLAGS = $(COMMON_CFLAGS)
> ntfs_mod_LDFLAGS = $(COMMON_LDFLAGS)
>
> +# For ntfscomp.mod.
> +ntfscomp_mod_SOURCES = fs/ntfscomp.c
> +ntfscomp_mod_CFLAGS = $(COMMON_CFLAGS)
> +ntfscomp_mod_LDFLAGS = $(COMMON_LDFLAGS)
> +
> # For minix.mod.
> minix_mod_SOURCES = fs/minix.c
> minix_mod_CFLAGS = $(COMMON_CFLAGS)
> Index: conf/i386-efi.rmk
> ===================================================================
> RCS file: /sources/grub/grub2/conf/i386-efi.rmk,v
> retrieving revision 1.24
> diff -u -p -r1.24 i386-efi.rmk
> --- conf/i386-efi.rmk 18 Nov 2007 06:41:45 -0000 1.24
> +++ conf/i386-efi.rmk 29 Nov 2007 18:23:11 -0000
> @@ -36,7 +36,7 @@ grub_probe_SOURCES = util/grub-probe.c \
> partmap/pc.c partmap/apple.c partmap/gpt.c \
> fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c fs/ntfs.c kern/fs.c \
> kern/env.c fs/fshelp.c fs/xfs.c fs/affs.c fs/sfs.c fs/hfsplus.c \
> - disk/lvm.c disk/raid.c grub_probe_init.c
> + fs/ntfscomp.c disk/lvm.c disk/raid.c grub_probe_init.c
>
> # For grub-emu.
> grub_emu_DEPENDENCIES = grub_script.tab.c grub_script.tab.h \
> @@ -50,7 +50,7 @@ grub_emu_SOURCES = commands/boot.c comma
> disk/loopback.c \
> fs/affs.c fs/ext2.c fs/fat.c fs/fshelp.c fs/hfs.c fs/iso9660.c \
> fs/jfs.c fs/minix.c fs/sfs.c fs/ufs.c fs/xfs.c fs/hfsplus.c \
> - fs/ntfs.c \
> + fs/ntfs.c fs/ntfscomp.c \
> io/gzio.c \
> kern/device.c kern/disk.c kern/dl.c kern/elf.c kern/env.c \
> kern/err.c \
> Index: conf/i386-linuxbios.rmk
> ===================================================================
> RCS file: /sources/grub/grub2/conf/i386-linuxbios.rmk,v
> retrieving revision 1.3
> diff -u -p -r1.3 i386-linuxbios.rmk
> --- conf/i386-linuxbios.rmk 18 Nov 2007 06:41:45 -0000 1.3
> +++ conf/i386-linuxbios.rmk 29 Nov 2007 18:23:14 -0000
> @@ -60,7 +60,7 @@ grub_probe_SOURCES = util/grub-probe.c \
> partmap/pc.c partmap/apple.c partmap/gpt.c \
> fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c fs/ntfs.c kern/fs.c \
> kern/env.c fs/fshelp.c fs/xfs.c fs/affs.c fs/sfs.c fs/hfsplus.c \
> - disk/lvm.c disk/raid.c grub_probe_init.c
> + fs/ntfscomp.c disk/lvm.c disk/raid.c grub_probe_init.c
>
> # For grub-emu.
> grub_emu_DEPENDENCIES = grub_script.tab.c grub_script.tab.h \
> @@ -74,7 +74,7 @@ grub_emu_SOURCES = commands/boot.c comma
> disk/host.c disk/loopback.c disk/raid.c disk/lvm.c \
> fs/affs.c fs/ext2.c fs/fat.c fs/fshelp.c fs/hfs.c fs/iso9660.c \
> fs/jfs.c fs/minix.c fs/sfs.c fs/ufs.c fs/xfs.c fs/hfsplus.c \
> - fs/ntfs.c \
> + fs/ntfs.c fs/ntfscomp.c \
> io/gzio.c \
> kern/device.c kern/disk.c kern/dl.c kern/elf.c kern/env.c \
> kern/err.c \
> Index: conf/i386-pc.rmk
> ===================================================================
> RCS file: /sources/grub/grub2/conf/i386-pc.rmk,v
> retrieving revision 1.94
> diff -u -p -r1.94 i386-pc.rmk
> --- conf/i386-pc.rmk 18 Nov 2007 06:41:45 -0000 1.94
> +++ conf/i386-pc.rmk 29 Nov 2007 18:23:21 -0000
> @@ -68,7 +68,7 @@ grub_setup_SOURCES = util/i386/pc/grub-s
> fs/sfs.c kern/parser.c kern/partition.c partmap/pc.c \
> partmap/gpt.c fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c fs/ntfs.c \
> fs/hfsplus.c kern/file.c kern/fs.c kern/env.c fs/fshelp.c \
> - util/raid.c util/lvm.c grub_setup_init.c
> + fs/ntfscomp.c util/raid.c util/lvm.c grub_setup_init.c
>
> # For grub-mkdevicemap.
> grub_mkdevicemap_SOURCES = util/grub-mkdevicemap.c util/misc.c
> \
> @@ -83,7 +83,7 @@ grub_probe_SOURCES = util/grub-probe.c \
> partmap/pc.c partmap/apple.c partmap/gpt.c \
> fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c fs/ntfs.c kern/fs.c \
> kern/env.c fs/fshelp.c fs/xfs.c fs/affs.c fs/sfs.c fs/hfsplus.c \
> - disk/lvm.c disk/raid.c grub_probe_init.c
> + fs/ntfscomp.c disk/lvm.c disk/raid.c grub_probe_init.c
>
> # For grub-emu.
> grub_emu_DEPENDENCIES = grub_script.tab.c grub_script.tab.h \
> @@ -97,7 +97,7 @@ grub_emu_SOURCES = commands/boot.c comma
> disk/host.c disk/loopback.c disk/raid.c disk/lvm.c \
> fs/affs.c fs/ext2.c fs/fat.c fs/fshelp.c fs/hfs.c fs/iso9660.c \
> fs/jfs.c fs/minix.c fs/sfs.c fs/ufs.c fs/xfs.c fs/hfsplus.c \
> - fs/ntfs.c \
> + fs/ntfs.c fs/ntfscomp.c \
> io/gzio.c \
> kern/device.c kern/disk.c kern/dl.c kern/elf.c kern/env.c \
> kern/err.c \
> Index: conf/powerpc-ieee1275.rmk
> ===================================================================
> RCS file: /sources/grub/grub2/conf/powerpc-ieee1275.rmk,v
> retrieving revision 1.75
> diff -u -p -r1.75 powerpc-ieee1275.rmk
> --- conf/powerpc-ieee1275.rmk 18 Nov 2007 06:41:46 -0000 1.75
> +++ conf/powerpc-ieee1275.rmk 29 Nov 2007 18:23:24 -0000
> @@ -48,7 +48,7 @@ grub_probe_SOURCES = util/grub-probe.c \
> partmap/pc.c partmap/apple.c partmap/gpt.c \
> fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c fs/ntfs.c kern/fs.c \
> kern/env.c fs/fshelp.c fs/xfs.c fs/affs.c fs/sfs.c fs/hfsplus.c \
> - disk/lvm.c disk/raid.c grub_probe_init.c
> + fs/ntfscomp.c disk/lvm.c disk/raid.c grub_probe_init.c
>
> # For grub-emu
> grub_emu_DEPENDENCIES = grub_script.tab.c grub_script.tab.h \
> @@ -61,7 +61,7 @@ grub_emu_SOURCES = commands/boot.c comma
> disk/loopback.c \
> fs/affs.c fs/ext2.c fs/fat.c fs/fshelp.c fs/hfs.c fs/iso9660.c \
> fs/jfs.c fs/minix.c fs/sfs.c fs/ufs.c fs/xfs.c fs/hfsplus.c \
> - fs/ntfs.c \
> + fs/ntfs.c fs/ntfscomp.c \
> io/gzio.c \
> kern/device.c kern/disk.c kern/dl.c kern/elf.c kern/env.c \
> kern/err.c kern/file.c kern/fs.c kern/loader.c kern/main.c \
> Index: fs/ntfs.c
> ===================================================================
> RCS file: /sources/grub/grub2/fs/ntfs.c,v
> retrieving revision 1.2
> diff -u -p -r1.2 ntfs.c
> --- fs/ntfs.c 10 Nov 2007 20:08:33 -0000 1.2
> +++ fs/ntfs.c 29 Nov 2007 18:12:25 -0000
> @@ -23,169 +23,20 @@
> #include <grub/disk.h>
> #include <grub/dl.h>
> #include <grub/fshelp.h>
> -
> -#define FILE_MFT 0
> -#define FILE_MFTMIRR 1
> -#define FILE_LOGFILE 2
> -#define FILE_VOLUME 3
> -#define FILE_ATTRDEF 4
> -#define FILE_ROOT 5
> -#define FILE_BITMAP 6
> -#define FILE_BOOT 7
> -#define FILE_BADCLUS 8
> -#define FILE_QUOTA 9
> -#define FILE_UPCASE 10
> -
> -#define AT_STANDARD_INFORMATION 0x10
> -#define AT_ATTRIBUTE_LIST 0x20
> -#define AT_FILENAME 0x30
> -#define AT_OBJECT_ID 0x40
> -#define AT_SECURITY_DESCRIPTOR 0x50
> -#define AT_VOLUME_NAME 0x60
> -#define AT_VOLUME_INFORMATION 0x70
> -#define AT_DATA 0x80
> -#define AT_INDEX_ROOT 0x90
> -#define AT_INDEX_ALLOCATION 0xA0
> -#define AT_BITMAP 0xB0
> -#define AT_SYMLINK 0xC0
> -#define AT_EA_INFORMATION 0xD0
> -#define AT_EA 0xE0
> -
> -#define ATTR_READ_ONLY 0x1
> -#define ATTR_HIDDEN 0x2
> -#define ATTR_SYSTEM 0x4
> -#define ATTR_ARCHIVE 0x20
> -#define ATTR_DEVICE 0x40
> -#define ATTR_NORMAL 0x80
> -#define ATTR_TEMPORARY 0x100
> -#define ATTR_SPARSE 0x200
> -#define ATTR_REPARSE 0x400
> -#define ATTR_COMPRESSED 0x800
> -#define ATTR_OFFLINE 0x1000
> -#define ATTR_NOT_INDEXED 0x2000
> -#define ATTR_ENCRYPTED 0x4000
> -#define ATTR_DIRECTORY 0x10000000
> -#define ATTR_INDEX_VIEW 0x20000000
> -
> -#define FLAG_COMPRESSED 1
> -#define FLAG_ENCRYPTED 0x4000
> -#define FLAG_SPARSE 0x8000
> -
> -#define BLK_SHR GRUB_DISK_SECTOR_BITS
> -
> -#define MAX_MFT (1024 >> BLK_SHR)
> -#define MAX_IDX (16384 >> BLK_SHR)
> -#define MAX_SPC (4096 >> BLK_SHR)
> -
> -#define COM_LEN 4096
> -#define COM_SEC (COM_LEN >> BLK_SHR)
> -
> -#define BMP_LEN 4096
> -
> -#define AF_ALST 1
> -#define AF_MMFT 2
> -#define AF_GPOS 4
> -
> -#define RF_COMP 1
> -#define RF_CBLK 2
> -#define RF_BLNK 4
> -
> -#define valueat(buf,ofs,type) *((type*)(((char*)buf)+ofs))
> -
> -#define u16at(buf,ofs) grub_le_to_cpu16(valueat(buf,ofs,grub_uint16_t))
> -#define u32at(buf,ofs) grub_le_to_cpu32(valueat(buf,ofs,grub_uint32_t))
> -#define u64at(buf,ofs) grub_le_to_cpu64(valueat(buf,ofs,grub_uint64_t))
> -
> -#define v16at(buf,ofs) valueat(buf,ofs,grub_uint16_t)
> -#define v32at(buf,ofs) valueat(buf,ofs,grub_uint32_t)
> -#define v64at(buf,ofs) valueat(buf,ofs,grub_uint64_t)
> -
> -struct grub_ntfs_bpb
> -{
> - grub_uint8_t jmp_boot[3];
> - grub_uint8_t oem_name[8];
> - grub_uint16_t bytes_per_sector;
> - grub_uint8_t sectors_per_cluster;
> - grub_uint8_t reserved_1[7];
> - grub_uint8_t media;
> - grub_uint16_t reserved_2;
> - grub_uint16_t sectors_per_track;
> - grub_uint16_t num_heads;
> - grub_uint32_t num_hidden_sectors;
> - grub_uint32_t reserved_3[2];
> - grub_uint64_t num_total_sectors;
> - grub_uint64_t mft_lcn;
> - grub_uint64_t mft_mirr_lcn;
> - grub_int8_t clusters_per_mft;
> - grub_int8_t reserved_4[3];
> - grub_int8_t clusters_per_index;
> - grub_int8_t reserved_5[3];
> - grub_uint64_t serial_number;
> - grub_uint32_t checksum;
> -} __attribute__ ((packed));
> -
> -#define grub_ntfs_file grub_fshelp_node
> -
> -struct grub_ntfs_attr
> -{
> - int flags;
> - char *emft_buf, *edat_buf;
> - char *attr_cur, *attr_nxt, *attr_end;
> - unsigned long save_pos;
> - char *sbuf;
> - struct grub_ntfs_file *mft;
> -};
> -
> -struct grub_fshelp_node
> -{
> - struct grub_ntfs_data *data;
> - char *buf;
> - grub_uint32_t size;
> - grub_uint32_t ino;
> - int inode_read;
> - struct grub_ntfs_attr attr;
> -};
> -
> -struct grub_ntfs_data
> -{
> - struct grub_ntfs_file cmft;
> - struct grub_ntfs_file mmft;
> - grub_disk_t disk;
> - grub_uint32_t mft_size;
> - grub_uint32_t idx_size;
> - grub_uint32_t spc;
> - grub_uint32_t blocksize;
> - grub_uint32_t mft_start;
> -};
> -
> -struct grub_ntfs_comp
> -{
> - grub_disk_t disk;
> - int comp_head, comp_tail;
> - unsigned long comp_table[16][2];
> - unsigned long cbuf_ofs, cbuf_vcn, spc;
> - char *cbuf;
> -};
> -
> -struct grub_ntfs_rlst
> -{
> - int flags;
> - unsigned long target_vcn, curr_vcn, next_vcn, curr_lcn;
> - char *cur_run;
> - struct grub_ntfs_attr *attr;
> - struct grub_ntfs_comp comp;
> -};
> +#include <grub/ntfs.h>
>
> #ifndef GRUB_UTIL
> static grub_dl_t my_mod;
> #endif
>
> +ntfscomp_func_t grub_ntfscomp_func;
> +
> static grub_err_t
> fixup (struct grub_ntfs_data *data, char *buf, int len, char *magic)
> {
> int ss;
> char *pu;
> - unsigned us;
> + grub_uint16_t us;
>
> if (grub_memcmp (buf, magic, 4))
> return grub_error (GRUB_ERR_BAD_FS, "%s label not found", magic);
> @@ -212,9 +63,9 @@ fixup (struct grub_ntfs_data *data, char
> }
>
> static grub_err_t read_mft (struct grub_ntfs_data *data, char *buf,
> - unsigned long mftno);
> + grub_uint32_t mftno);
> static grub_err_t read_attr (struct grub_ntfs_attr *at, char *dest,
> - unsigned long ofs, unsigned long len,
> + grub_uint32_t ofs, grub_uint32_t len,
> int cached,
> void
> NESTED_FUNC_ATTR (*read_hook) (grub_disk_addr_t
> @@ -223,7 +74,7 @@ static grub_err_t read_attr (struct grub
> unsigned length));
>
> static grub_err_t read_data (struct grub_ntfs_attr *at, char *pa, char *dest,
> - unsigned long ofs, unsigned long len,
> + grub_uint32_t ofs, grub_uint32_t len,
> int cached,
> void
> NESTED_FUNC_ATTR (*read_hook) (grub_disk_addr_t
> @@ -413,9 +264,9 @@ locate_attr (struct grub_ntfs_attr *at,
> }
>
> static char *
> -read_run_data (char *run, int nn, unsigned long *val, int sig)
> +read_run_data (char *run, int nn, grub_uint32_t * val, int sig)
> {
> - unsigned long r, v;
> + grub_uint32_t r, v;
>
> r = 0;
> v = 1;
> @@ -433,11 +284,11 @@ read_run_data (char *run, int nn, unsign
> return run;
> }
>
> -static grub_err_t
> -read_run_list (struct grub_ntfs_rlst *ctx)
> +grub_err_t
> +grub_ntfs_read_run_list (struct grub_ntfs_rlst * ctx)
> {
> int c1, c2;
> - unsigned long val;
> + grub_uint32_t val;
> char *run;
>
> run = ctx->cur_run;
> @@ -482,294 +333,32 @@ retry:
> return 0;
> }
>
> -static grub_err_t
> -decomp_nextvcn (struct grub_ntfs_comp *cc)
> -{
> - if (cc->comp_head >= cc->comp_tail)
> - return grub_error (GRUB_ERR_BAD_FS, "Compression block overflown");
> - if (grub_disk_read
> - (cc->disk,
> - (cc->comp_table[cc->comp_head][1] -
> - (cc->comp_table[cc->comp_head][0] - cc->cbuf_vcn)) * cc->spc, 0,
> - cc->spc << BLK_SHR, cc->cbuf))
> - return grub_errno;
> - cc->cbuf_vcn++;
> - if ((cc->cbuf_vcn >= cc->comp_table[cc->comp_head][0]))
> - cc->comp_head++;
> - cc->cbuf_ofs = 0;
> - return 0;
> -}
> -
> -static grub_err_t
> -decomp_getch (struct grub_ntfs_comp *cc, unsigned char *res)
> -{
> - if (cc->cbuf_ofs >= (cc->spc << BLK_SHR))
> - {
> - if (decomp_nextvcn (cc))
> - return grub_errno;
> - }
> - *res = (unsigned char) cc->cbuf[cc->cbuf_ofs++];
> - return 0;
> -}
> -
> -static grub_err_t
> -decomp_get16 (struct grub_ntfs_comp *cc, grub_uint16_t * res)
> -{
> - unsigned char c1, c2;
> -
> - if ((decomp_getch (cc, &c1)) || (decomp_getch (cc, &c2)))
> - return grub_errno;
> - *res = ((grub_uint16_t) c2) * 256 + ((grub_uint16_t) c1);
> - return 0;
> -}
> -
> -/* Decompress a block (4096 bytes) */
> -static grub_err_t
> -decomp_block (struct grub_ntfs_comp *cc, char *dest)
> -{
> - grub_uint16_t flg, cnt;
> -
> - if (decomp_get16 (cc, &flg))
> - return grub_errno;
> - cnt = (flg & 0xFFF) + 1;
> -
> - if (dest)
> - {
> - if (flg & 0x8000)
> - {
> - unsigned char tag;
> - unsigned long bits, copied;
> -
> - bits = copied = tag = 0;
> - while (cnt > 0)
> - {
> - if (copied > COM_LEN)
> - return grub_error (GRUB_ERR_BAD_FS,
> - "Compression block too large");
> -
> - if (!bits)
> - {
> - if (decomp_getch (cc, &tag))
> - return grub_errno;
> -
> - bits = 8;
> - cnt--;
> - if (cnt <= 0)
> - break;
> - }
> - if (tag & 1)
> - {
> - unsigned long i, len, delta, code, lmask, dshift;
> - grub_uint16_t word;
> -
> - if (decomp_get16 (cc, &word))
> - return grub_errno;
> -
> - code = word;
> - cnt -= 2;
> -
> - if (!copied)
> - {
> - grub_error (GRUB_ERR_BAD_FS, "Context window empty");
> - return 0;
> - }
> -
> - for (i = copied - 1, lmask = 0xFFF, dshift = 12; i >= 0x10;
> - i >>= 1)
> - {
> - lmask >>= 1;
> - dshift--;
> - }
> -
> - delta = code >> dshift;
> - len = (code & lmask) + 3;
> -
> - for (i = 0; i < len; i++)
> - {
> - dest[copied] = dest[copied - delta - 1];
> - copied++;
> - }
> - }
> - else
> - {
> - unsigned char ch;
> -
> - if (decomp_getch (cc, &ch))
> - return grub_errno;
> - dest[copied++] = ch;
> - cnt--;
> - }
> - tag >>= 1;
> - bits--;
> - }
> - return 0;
> - }
> - else
> - {
> - if (cnt != COM_LEN)
> - return grub_error (GRUB_ERR_BAD_FS,
> - "Invalid compression block size");
> - }
> - }
> -
> - while (cnt > 0)
> - {
> - int n;
> -
> - n = (cc->spc << BLK_SHR) - cc->cbuf_ofs;
> - if (n > cnt)
> - n = cnt;
> - if ((dest) && (n))
> - {
> - memcpy (dest, &cc->cbuf[cc->cbuf_ofs], n);
> - dest += n;
> - }
> - cnt -= n;
> - cc->cbuf_ofs += n;
> - if ((cnt) && (decomp_nextvcn (cc)))
> - return grub_errno;
> - }
> - return 0;
> -}
> -
> -static grub_err_t
> -read_block (struct grub_ntfs_rlst *ctx, char *buf, int num)
> -{
> - int cpb = COM_SEC / ctx->comp.spc;
> -
> - while (num)
> - {
> - int nn;
> -
> - if ((ctx->target_vcn & 0xF) == 0)
> - {
> -
> - if (ctx->comp.comp_head != ctx->comp.comp_tail)
> - return grub_error (GRUB_ERR_BAD_FS, "Invalid compression block");
> - ctx->comp.comp_head = ctx->comp.comp_tail = 0;
> - ctx->comp.cbuf_vcn = ctx->target_vcn;
> - ctx->comp.cbuf_ofs = (ctx->comp.spc << BLK_SHR);
> - if (ctx->target_vcn >= ctx->next_vcn)
> - {
> - if (read_run_list (ctx))
> - return grub_errno;
> - }
> - while (ctx->target_vcn + 16 > ctx->next_vcn)
> - {
> - if (ctx->flags & RF_BLNK)
> - break;
> - ctx->comp.comp_table[ctx->comp.comp_tail][0] = ctx->next_vcn;
> - ctx->comp.comp_table[ctx->comp.comp_tail][1] =
> - ctx->curr_lcn + ctx->next_vcn - ctx->curr_vcn;
> - ctx->comp.comp_tail++;
> - if (read_run_list (ctx))
> - return grub_errno;
> - }
> - }
> -
> - nn = (16 - (ctx->target_vcn & 0xF)) / cpb;
> - if (nn > num)
> - nn = num;
> - num -= nn;
> -
> - if (ctx->flags & RF_BLNK)
> - {
> - ctx->target_vcn += nn * cpb;
> - if (ctx->comp.comp_tail == 0)
> - {
> - if (buf)
> - {
> - grub_memset (buf, 0, nn * COM_LEN);
> - buf += nn * COM_LEN;
> - }
> - }
> - else
> - {
> - while (nn)
> - {
> - if (decomp_block (&ctx->comp, buf))
> - return grub_errno;
> - if (buf)
> - buf += COM_LEN;
> - nn--;
> - }
> - }
> - }
> - else
> - {
> - nn *= cpb;
> - while ((ctx->comp.comp_head < ctx->comp.comp_tail) && (nn))
> - {
> - int tt;
> -
> - tt =
> - ctx->comp.comp_table[ctx->comp.comp_head][0] -
> - ctx->target_vcn;
> - if (tt > nn)
> - tt = nn;
> - ctx->target_vcn += tt;
> - if (buf)
> - {
> - if (grub_disk_read
> - (ctx->comp.disk,
> - (ctx->comp.comp_table[ctx->comp.comp_head][1] -
> - (ctx->comp.comp_table[ctx->comp.comp_head][0] -
> - ctx->target_vcn)) * ctx->comp.spc, 0,
> - tt * (ctx->comp.spc << BLK_SHR), buf))
> - return grub_errno;
> - buf += tt * (ctx->comp.spc << BLK_SHR);
> - }
> - nn -= tt;
> - if (ctx->target_vcn >=
> - ctx->comp.comp_table[ctx->comp.comp_head][0])
> - ctx->comp.comp_head++;
> - }
> - if (nn)
> - {
> - if (buf)
> - {
> - if (grub_disk_read
> - (ctx->comp.disk,
> - (ctx->target_vcn - ctx->curr_vcn +
> - ctx->curr_lcn) * ctx->comp.spc, 0,
> - nn * (ctx->comp.spc << BLK_SHR), buf))
> - return grub_errno;
> - buf += nn * (ctx->comp.spc << BLK_SHR);
> - }
> - ctx->target_vcn += nn;
> - }
> - }
> - }
> - return 0;
> -}
> -
> static int
> grub_ntfs_read_block (grub_fshelp_node_t node, int block)
> {
> struct grub_ntfs_rlst *ctx;
>
> ctx = (struct grub_ntfs_rlst *) node;
> - if ((unsigned long) block >= ctx->next_vcn)
> + if ((grub_uint32_t) block >= ctx->next_vcn)
> {
> - if (read_run_list (ctx))
> + if (grub_ntfs_read_run_list (ctx))
> return -1;
> return ctx->curr_lcn;
> }
> else
> - return (ctx->flags & RF_BLNK) ? 0 : ((unsigned long) block -
> + return (ctx->flags & RF_BLNK) ? 0 : ((grub_uint32_t) block -
> ctx->curr_vcn + ctx->curr_lcn);
> }
>
> static grub_err_t
> -read_data (struct grub_ntfs_attr *at, char *pa, char *dest, unsigned long
> ofs,
> - unsigned long len, int cached,
> +read_data (struct grub_ntfs_attr *at, char *pa, char *dest, grub_uint32_t
> ofs,
> + grub_uint32_t len, int cached,
> void NESTED_FUNC_ATTR (*read_hook) (grub_disk_addr_t sector,
> unsigned offset,
> unsigned length))
> {
> - unsigned long vcn;
> + grub_uint32_t vcn;
> struct grub_ntfs_rlst cc, *ctx;
> - grub_err_t ret;
>
> if (len == 0)
> return 0;
> @@ -803,7 +392,7 @@ read_data (struct grub_ntfs_attr *at, ch
> {
> if ((ofs & (~(COM_LEN - 1))) == at->save_pos)
> {
> - unsigned long n;
> + grub_uint32_t n;
>
> n = COM_LEN - (ofs - at->save_pos);
> if (n > len)
> @@ -836,13 +425,13 @@ read_data (struct grub_ntfs_attr *at, ch
> ctx->curr_lcn = 0;
> while (ctx->next_vcn <= ctx->target_vcn)
> {
> - if (read_run_list (ctx))
> + if (grub_ntfs_read_run_list (ctx))
> return grub_errno;
> }
>
> if (at->flags & AF_GPOS)
> {
> - unsigned long st0, st1;
> + grub_uint32_t st0, st1;
>
> st0 =
> (ctx->target_vcn - ctx->curr_vcn + ctx->curr_lcn) * ctx->comp.spc +
> @@ -851,7 +440,7 @@ read_data (struct grub_ntfs_attr *at, ch
> if (st1 ==
> (ctx->next_vcn - ctx->curr_vcn + ctx->curr_lcn) * ctx->comp.spc)
> {
> - if (read_run_list (ctx))
> + if (grub_ntfs_read_run_list (ctx))
> return grub_errno;
> st1 = ctx->curr_lcn * ctx->comp.spc;
> }
> @@ -871,81 +460,14 @@ read_data (struct grub_ntfs_attr *at, ch
> return grub_errno;
> }
>
> - ctx->comp.comp_head = ctx->comp.comp_tail = 0;
> - ctx->comp.cbuf = grub_malloc ((ctx->comp.spc) << BLK_SHR);
> - if (!ctx->comp.cbuf)
> - return 0;
> -
> - ret = 0;
> -
> - //ctx->comp.disk->read_hook = read_hook;
> -
> - if ((vcn > ctx->target_vcn) &&
> - (read_block
> - (ctx, NULL, ((vcn - ctx->target_vcn) * ctx->comp.spc) / COM_SEC)))
> - {
> - ret = grub_errno;
> - goto quit;
> - }
> -
> - if (ofs % COM_LEN)
> - {
> - unsigned long t, n, o;
> -
> - t = ctx->target_vcn * (ctx->comp.spc << BLK_SHR);
> - if (read_block (ctx, at->sbuf, 1))
> - {
> - ret = grub_errno;
> - goto quit;
> - }
> -
> - at->save_pos = t;
> -
> - o = ofs % COM_LEN;
> - n = COM_LEN - o;
> - if (n > len)
> - n = len;
> - grub_memcpy (dest, &at->sbuf[o], n);
> - if (n == len)
> - goto quit;
> - dest += n;
> - len -= n;
> - }
> -
> - if (read_block (ctx, dest, len / COM_LEN))
> - {
> - ret = grub_errno;
> - goto quit;
> - }
> -
> - dest += (len / COM_LEN) * COM_LEN;
> - len = len % COM_LEN;
> - if (len)
> - {
> - unsigned long t;
> -
> - t = ctx->target_vcn * (ctx->comp.spc << BLK_SHR);
> - if (read_block (ctx, at->sbuf, 1))
> - {
> - ret = grub_errno;
> - goto quit;
> - }
> -
> - at->save_pos = t;
> -
> - grub_memcpy (dest, at->sbuf, len);
> - }
> -
> -quit:
> - //ctx->comp.disk->read_hook = 0;
> - if (ctx->comp.cbuf)
> - grub_free (ctx->comp.cbuf);
> - return ret;
> + return (grub_ntfscomp_func) ? grub_ntfscomp_func (at, dest, ofs, len, ctx,
> + vcn) :
> + grub_error (GRUB_ERR_BAD_FS, "ntfscomp module not loaded");
> }
>
> static grub_err_t
> -read_attr (struct grub_ntfs_attr *at, char *dest, unsigned long ofs,
> - unsigned long len, int cached,
> +read_attr (struct grub_ntfs_attr *at, char *dest, grub_uint32_t ofs,
> + grub_uint32_t len, int cached,
> void NESTED_FUNC_ATTR (*read_hook) (grub_disk_addr_t sector,
> unsigned offset,
> unsigned length))
> @@ -961,7 +483,7 @@ read_attr (struct grub_ntfs_attr *at, ch
> if (at->flags & AF_ALST)
> {
> char *pa;
> - unsigned long vcn;
> + grub_uint32_t vcn;
>
> vcn = ofs / (at->mft->data->spc << BLK_SHR);
> pa = at->attr_nxt + u16at (at->attr_nxt, 4);
> @@ -987,7 +509,7 @@ read_attr (struct grub_ntfs_attr *at, ch
> }
>
> static grub_err_t
> -read_mft (struct grub_ntfs_data *data, char *buf, unsigned long mftno)
> +read_mft (struct grub_ntfs_data *data, char *buf, grub_uint32_t mftno)
> {
> if (read_attr
> (&data->mmft.attr, buf, mftno * (data->mft_size << BLK_SHR),
> @@ -1220,14 +742,14 @@ grub_ntfs_iterate_dir (grub_fshelp_node_
>
> if (bitmap)
> {
> - unsigned long v, i;
> + grub_uint32_t v, i;
>
> indx = grub_malloc (mft->data->idx_size << BLK_SHR);
> if (indx == NULL)
> goto done;
>
> v = 1;
> - for (i = 0; i < (unsigned long) bitmap_len * 8; i++)
> + for (i = 0; i < (grub_uint32_t) bitmap_len * 8; i++)
> {
> if (*bitmap & v)
> {
> Index: fs/ntfscomp.c
> ===================================================================
> RCS file: /sources/grub/grub2/fs/ntfscomp.c,v
> diff -Nu fs/ntfscomp.c
> --- /dev/null 2007-11-30 08:59:18.260044737 +0800
> +++ fs/ntfscomp.c 2007-11-30 02:02:44.328125000 +0800
> @@ -0,0 +1,375 @@
> +/* ntfscomp.c - compression support for the NTFS filesystem */
> +/*
> + * Copyright (C) 2007 Free Software Foundation, Inc.
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 3 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#include <grub/file.h>
> +#include <grub/mm.h>
> +#include <grub/misc.h>
> +#include <grub/disk.h>
> +#include <grub/dl.h>
> +#include <grub/fshelp.h>
> +#include <grub/ntfs.h>
> +
> +static grub_err_t
> +decomp_nextvcn (struct grub_ntfs_comp *cc)
> +{
> + if (cc->comp_head >= cc->comp_tail)
> + return grub_error (GRUB_ERR_BAD_FS, "Compression block overflown");
> + if (grub_disk_read
> + (cc->disk,
> + (cc->comp_table[cc->comp_head][1] -
> + (cc->comp_table[cc->comp_head][0] - cc->cbuf_vcn)) * cc->spc, 0,
> + cc->spc << BLK_SHR, cc->cbuf))
> + return grub_errno;
> + cc->cbuf_vcn++;
> + if ((cc->cbuf_vcn >= cc->comp_table[cc->comp_head][0]))
> + cc->comp_head++;
> + cc->cbuf_ofs = 0;
> + return 0;
> +}
> +
> +static grub_err_t
> +decomp_getch (struct grub_ntfs_comp *cc, unsigned char *res)
> +{
> + if (cc->cbuf_ofs >= (cc->spc << BLK_SHR))
> + {
> + if (decomp_nextvcn (cc))
> + return grub_errno;
> + }
> + *res = (unsigned char) cc->cbuf[cc->cbuf_ofs++];
> + return 0;
> +}
> +
> +static grub_err_t
> +decomp_get16 (struct grub_ntfs_comp *cc, grub_uint16_t * res)
> +{
> + unsigned char c1, c2;
> +
> + if ((decomp_getch (cc, &c1)) || (decomp_getch (cc, &c2)))
> + return grub_errno;
> + *res = ((grub_uint16_t) c2) * 256 + ((grub_uint16_t) c1);
> + return 0;
> +}
> +
> +/* Decompress a block (4096 bytes) */
> +static grub_err_t
> +decomp_block (struct grub_ntfs_comp *cc, char *dest)
> +{
> + grub_uint16_t flg, cnt;
> +
> + if (decomp_get16 (cc, &flg))
> + return grub_errno;
> + cnt = (flg & 0xFFF) + 1;
> +
> + if (dest)
> + {
> + if (flg & 0x8000)
> + {
> + unsigned char tag;
> + grub_uint32_t bits, copied;
> +
> + bits = copied = tag = 0;
> + while (cnt > 0)
> + {
> + if (copied > COM_LEN)
> + return grub_error (GRUB_ERR_BAD_FS,
> + "Compression block too large");
> +
> + if (!bits)
> + {
> + if (decomp_getch (cc, &tag))
> + return grub_errno;
> +
> + bits = 8;
> + cnt--;
> + if (cnt <= 0)
> + break;
> + }
> + if (tag & 1)
> + {
> + grub_uint32_t i, len, delta, code, lmask, dshift;
> + grub_uint16_t word;
> +
> + if (decomp_get16 (cc, &word))
> + return grub_errno;
> +
> + code = word;
> + cnt -= 2;
> +
> + if (!copied)
> + {
> + grub_error (GRUB_ERR_BAD_FS, "Context window empty");
> + return 0;
> + }
> +
> + for (i = copied - 1, lmask = 0xFFF, dshift = 12; i >= 0x10;
> + i >>= 1)
> + {
> + lmask >>= 1;
> + dshift--;
> + }
> +
> + delta = code >> dshift;
> + len = (code & lmask) + 3;
> +
> + for (i = 0; i < len; i++)
> + {
> + dest[copied] = dest[copied - delta - 1];
> + copied++;
> + }
> + }
> + else
> + {
> + unsigned char ch;
> +
> + if (decomp_getch (cc, &ch))
> + return grub_errno;
> + dest[copied++] = ch;
> + cnt--;
> + }
> + tag >>= 1;
> + bits--;
> + }
> + return 0;
> + }
> + else
> + {
> + if (cnt != COM_LEN)
> + return grub_error (GRUB_ERR_BAD_FS,
> + "Invalid compression block size");
> + }
> + }
> +
> + while (cnt > 0)
> + {
> + int n;
> +
> + n = (cc->spc << BLK_SHR) - cc->cbuf_ofs;
> + if (n > cnt)
> + n = cnt;
> + if ((dest) && (n))
> + {
> + memcpy (dest, &cc->cbuf[cc->cbuf_ofs], n);
> + dest += n;
> + }
> + cnt -= n;
> + cc->cbuf_ofs += n;
> + if ((cnt) && (decomp_nextvcn (cc)))
> + return grub_errno;
> + }
> + return 0;
> +}
> +
> +static grub_err_t
> +read_block (struct grub_ntfs_rlst *ctx, char *buf, int num)
> +{
> + int cpb = COM_SEC / ctx->comp.spc;
> +
> + while (num)
> + {
> + int nn;
> +
> + if ((ctx->target_vcn & 0xF) == 0)
> + {
> +
> + if (ctx->comp.comp_head != ctx->comp.comp_tail)
> + return grub_error (GRUB_ERR_BAD_FS, "Invalid compression block");
> + ctx->comp.comp_head = ctx->comp.comp_tail = 0;
> + ctx->comp.cbuf_vcn = ctx->target_vcn;
> + ctx->comp.cbuf_ofs = (ctx->comp.spc << BLK_SHR);
> + if (ctx->target_vcn >= ctx->next_vcn)
> + {
> + if (grub_ntfs_read_run_list (ctx))
> + return grub_errno;
> + }
> + while (ctx->target_vcn + 16 > ctx->next_vcn)
> + {
> + if (ctx->flags & RF_BLNK)
> + break;
> + ctx->comp.comp_table[ctx->comp.comp_tail][0] = ctx->next_vcn;
> + ctx->comp.comp_table[ctx->comp.comp_tail][1] =
> + ctx->curr_lcn + ctx->next_vcn - ctx->curr_vcn;
> + ctx->comp.comp_tail++;
> + if (grub_ntfs_read_run_list (ctx))
> + return grub_errno;
> + }
> + }
> +
> + nn = (16 - (ctx->target_vcn & 0xF)) / cpb;
> + if (nn > num)
> + nn = num;
> + num -= nn;
> +
> + if (ctx->flags & RF_BLNK)
> + {
> + ctx->target_vcn += nn * cpb;
> + if (ctx->comp.comp_tail == 0)
> + {
> + if (buf)
> + {
> + grub_memset (buf, 0, nn * COM_LEN);
> + buf += nn * COM_LEN;
> + }
> + }
> + else
> + {
> + while (nn)
> + {
> + if (decomp_block (&ctx->comp, buf))
> + return grub_errno;
> + if (buf)
> + buf += COM_LEN;
> + nn--;
> + }
> + }
> + }
> + else
> + {
> + nn *= cpb;
> + while ((ctx->comp.comp_head < ctx->comp.comp_tail) && (nn))
> + {
> + int tt;
> +
> + tt =
> + ctx->comp.comp_table[ctx->comp.comp_head][0] -
> + ctx->target_vcn;
> + if (tt > nn)
> + tt = nn;
> + ctx->target_vcn += tt;
> + if (buf)
> + {
> + if (grub_disk_read
> + (ctx->comp.disk,
> + (ctx->comp.comp_table[ctx->comp.comp_head][1] -
> + (ctx->comp.comp_table[ctx->comp.comp_head][0] -
> + ctx->target_vcn)) * ctx->comp.spc, 0,
> + tt * (ctx->comp.spc << BLK_SHR), buf))
> + return grub_errno;
> + buf += tt * (ctx->comp.spc << BLK_SHR);
> + }
> + nn -= tt;
> + if (ctx->target_vcn >=
> + ctx->comp.comp_table[ctx->comp.comp_head][0])
> + ctx->comp.comp_head++;
> + }
> + if (nn)
> + {
> + if (buf)
> + {
> + if (grub_disk_read
> + (ctx->comp.disk,
> + (ctx->target_vcn - ctx->curr_vcn +
> + ctx->curr_lcn) * ctx->comp.spc, 0,
> + nn * (ctx->comp.spc << BLK_SHR), buf))
> + return grub_errno;
> + buf += nn * (ctx->comp.spc << BLK_SHR);
> + }
> + ctx->target_vcn += nn;
> + }
> + }
> + }
> + return 0;
> +}
> +
> +static grub_err_t
> +ntfscomp (struct grub_ntfs_attr *at, char *dest, grub_uint32_t ofs,
> + grub_uint32_t len, struct grub_ntfs_rlst *ctx, grub_uint32_t vcn)
> +{
> + grub_err_t ret;
> +
> + ctx->comp.comp_head = ctx->comp.comp_tail = 0;
> + ctx->comp.cbuf = grub_malloc ((ctx->comp.spc) << BLK_SHR);
> + if (!ctx->comp.cbuf)
> + return 0;
> +
> + ret = 0;
> +
> + //ctx->comp.disk->read_hook = read_hook;
> +
> + if ((vcn > ctx->target_vcn) &&
> + (read_block
> + (ctx, NULL, ((vcn - ctx->target_vcn) * ctx->comp.spc) / COM_SEC)))
> + {
> + ret = grub_errno;
> + goto quit;
> + }
> +
> + if (ofs % COM_LEN)
> + {
> + grub_uint32_t t, n, o;
> +
> + t = ctx->target_vcn * (ctx->comp.spc << BLK_SHR);
> + if (read_block (ctx, at->sbuf, 1))
> + {
> + ret = grub_errno;
> + goto quit;
> + }
> +
> + at->save_pos = t;
> +
> + o = ofs % COM_LEN;
> + n = COM_LEN - o;
> + if (n > len)
> + n = len;
> + grub_memcpy (dest, &at->sbuf[o], n);
> + if (n == len)
> + goto quit;
> + dest += n;
> + len -= n;
> + }
> +
> + if (read_block (ctx, dest, len / COM_LEN))
> + {
> + ret = grub_errno;
> + goto quit;
> + }
> +
> + dest += (len / COM_LEN) * COM_LEN;
> + len = len % COM_LEN;
> + if (len)
> + {
> + grub_uint32_t t;
> +
> + t = ctx->target_vcn * (ctx->comp.spc << BLK_SHR);
> + if (read_block (ctx, at->sbuf, 1))
> + {
> + ret = grub_errno;
> + goto quit;
> + }
> +
> + at->save_pos = t;
> +
> + grub_memcpy (dest, at->sbuf, len);
> + }
> +
> +quit:
> + //ctx->comp.disk->read_hook = 0;
> + if (ctx->comp.cbuf)
> + grub_free (ctx->comp.cbuf);
> + return ret;
> +}
> +
> +GRUB_MOD_INIT (ntfscomp)
> +{
> + (void) mod;
> + grub_ntfscomp_func = ntfscomp;
> +}
> +
> +GRUB_MOD_FINI (ntfscomp)
> +{
> + grub_ntfscomp_func = NULL;
> +}
> Index: include/grub/ntfs.h
> ===================================================================
> RCS file: /sources/grub/grub2/include/grub/ntfs.h,v
> diff -Nu include/grub/ntfs.h
> --- /dev/null 2007-11-30 08:59:18.260044737 +0800
> +++ include/grub/ntfs.h 2007-11-30 01:59:16.031250000 +0800
> @@ -0,0 +1,184 @@
> +/* ntfs.h - header for the NTFS filesystem */
> +/*
> + * GRUB -- GRand Unified Bootloader
> + * Copyright (C) 2007 Free Software Foundation, Inc.
> + *
> + * GRUB is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 3 of the License, or
> + * (at your option) any later version.
> + *
> + * GRUB is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#ifndef GRUB_NTFS_H
> +#define GRUB_NTFS_H 1
> +
> +#define FILE_MFT 0
> +#define FILE_MFTMIRR 1
> +#define FILE_LOGFILE 2
> +#define FILE_VOLUME 3
> +#define FILE_ATTRDEF 4
> +#define FILE_ROOT 5
> +#define FILE_BITMAP 6
> +#define FILE_BOOT 7
> +#define FILE_BADCLUS 8
> +#define FILE_QUOTA 9
> +#define FILE_UPCASE 10
> +
> +#define AT_STANDARD_INFORMATION 0x10
> +#define AT_ATTRIBUTE_LIST 0x20
> +#define AT_FILENAME 0x30
> +#define AT_OBJECT_ID 0x40
> +#define AT_SECURITY_DESCRIPTOR 0x50
> +#define AT_VOLUME_NAME 0x60
> +#define AT_VOLUME_INFORMATION 0x70
> +#define AT_DATA 0x80
> +#define AT_INDEX_ROOT 0x90
> +#define AT_INDEX_ALLOCATION 0xA0
> +#define AT_BITMAP 0xB0
> +#define AT_SYMLINK 0xC0
> +#define AT_EA_INFORMATION 0xD0
> +#define AT_EA 0xE0
> +
> +#define ATTR_READ_ONLY 0x1
> +#define ATTR_HIDDEN 0x2
> +#define ATTR_SYSTEM 0x4
> +#define ATTR_ARCHIVE 0x20
> +#define ATTR_DEVICE 0x40
> +#define ATTR_NORMAL 0x80
> +#define ATTR_TEMPORARY 0x100
> +#define ATTR_SPARSE 0x200
> +#define ATTR_REPARSE 0x400
> +#define ATTR_COMPRESSED 0x800
> +#define ATTR_OFFLINE 0x1000
> +#define ATTR_NOT_INDEXED 0x2000
> +#define ATTR_ENCRYPTED 0x4000
> +#define ATTR_DIRECTORY 0x10000000
> +#define ATTR_INDEX_VIEW 0x20000000
> +
> +#define FLAG_COMPRESSED 1
> +#define FLAG_ENCRYPTED 0x4000
> +#define FLAG_SPARSE 0x8000
> +
> +#define BLK_SHR GRUB_DISK_SECTOR_BITS
> +
> +#define MAX_MFT (1024 >> BLK_SHR)
> +#define MAX_IDX (16384 >> BLK_SHR)
> +#define MAX_SPC (4096 >> BLK_SHR)
> +
> +#define COM_LEN 4096
> +#define COM_SEC (COM_LEN >> BLK_SHR)
> +
> +#define BMP_LEN 4096
> +
> +#define AF_ALST 1
> +#define AF_MMFT 2
> +#define AF_GPOS 4
> +
> +#define RF_COMP 1
> +#define RF_CBLK 2
> +#define RF_BLNK 4
> +
> +#define valueat(buf,ofs,type) *((type*)(((char*)buf)+ofs))
> +
> +#define u16at(buf,ofs) grub_le_to_cpu16(valueat(buf,ofs,grub_uint16_t))
> +#define u32at(buf,ofs) grub_le_to_cpu32(valueat(buf,ofs,grub_uint32_t))
> +#define u64at(buf,ofs) grub_le_to_cpu64(valueat(buf,ofs,grub_uint64_t))
> +
> +#define v16at(buf,ofs) valueat(buf,ofs,grub_uint16_t)
> +#define v32at(buf,ofs) valueat(buf,ofs,grub_uint32_t)
> +#define v64at(buf,ofs) valueat(buf,ofs,grub_uint64_t)
> +
> +struct grub_ntfs_bpb
> +{
> + grub_uint8_t jmp_boot[3];
> + grub_uint8_t oem_name[8];
> + grub_uint16_t bytes_per_sector;
> + grub_uint8_t sectors_per_cluster;
> + grub_uint8_t reserved_1[7];
> + grub_uint8_t media;
> + grub_uint16_t reserved_2;
> + grub_uint16_t sectors_per_track;
> + grub_uint16_t num_heads;
> + grub_uint32_t num_hidden_sectors;
> + grub_uint32_t reserved_3[2];
> + grub_uint64_t num_total_sectors;
> + grub_uint64_t mft_lcn;
> + grub_uint64_t mft_mirr_lcn;
> + grub_int8_t clusters_per_mft;
> + grub_int8_t reserved_4[3];
> + grub_int8_t clusters_per_index;
> + grub_int8_t reserved_5[3];
> + grub_uint64_t serial_number;
> + grub_uint32_t checksum;
> +} __attribute__ ((packed));
> +
> +#define grub_ntfs_file grub_fshelp_node
> +
> +struct grub_ntfs_attr
> +{
> + int flags;
> + char *emft_buf, *edat_buf;
> + char *attr_cur, *attr_nxt, *attr_end;
> + grub_uint32_t save_pos;
> + char *sbuf;
> + struct grub_ntfs_file *mft;
> +};
> +
> +struct grub_fshelp_node
> +{
> + struct grub_ntfs_data *data;
> + char *buf;
> + grub_uint32_t size;
> + grub_uint32_t ino;
> + int inode_read;
> + struct grub_ntfs_attr attr;
> +};
> +
> +struct grub_ntfs_data
> +{
> + struct grub_ntfs_file cmft;
> + struct grub_ntfs_file mmft;
> + grub_disk_t disk;
> + grub_uint32_t mft_size;
> + grub_uint32_t idx_size;
> + grub_uint32_t spc;
> + grub_uint32_t blocksize;
> + grub_uint32_t mft_start;
> +};
> +
> +struct grub_ntfs_comp
> +{
> + grub_disk_t disk;
> + int comp_head, comp_tail;
> + grub_uint32_t comp_table[16][2];
> + grub_uint32_t cbuf_ofs, cbuf_vcn, spc;
> + char *cbuf;
> +};
> +
> +struct grub_ntfs_rlst
> +{
> + int flags;
> + grub_uint32_t target_vcn, curr_vcn, next_vcn, curr_lcn;
> + char *cur_run;
> + struct grub_ntfs_attr *attr;
> + struct grub_ntfs_comp comp;
> +};
> +
> +typedef grub_err_t (*ntfscomp_func_t) (struct grub_ntfs_attr * at, char
> *dest,
> + grub_uint32_t ofs, grub_uint32_t len,
> + struct grub_ntfs_rlst * ctx,
> + grub_uint32_t vcn);
> +
> +extern ntfscomp_func_t EXPORT_VAR (grub_ntfscomp_func);
> +
> +grub_err_t EXPORT_FUNC(grub_ntfs_read_run_list) (struct grub_ntfs_rlst *ctx);
> +
> +#endif /* ! GRUB_NTFS_H */
>
>
> _______________________________________________
> Grub-devel mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
--
Robert Millan
<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call, if you are unable to speak?
(as seen on /.)