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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: |
Fri, 21 Dec 2007 12:41:48 +0100 |
|
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Committed.
On Sat, Dec 15, 2007 at 02:08:22PM +0100, Robert Millan wrote:
>
> 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 /.)
>
>
> _______________________________________________
> 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 /.)