2007-07-28 Bean * conf/common.rmk (pkgdata_MODULES): Add ntfs.mod. (ntfs_mod_SOURCES): New variable. (ntfs_mod_CFLAGS): Likewise. (ntfs_mod_LDFLAGS): Likewise. * conf/i386-pc.rmk (grub_setup_SOURCES): Add fs/ntfs.c. (grub_probe_SOURCES): Likewise. (grub_emu_SOURCES): Likewise. * conf/i386-efi.rmk (grub_probe_SOURCES): Add fs/ntfs.c. (grub_emu_SOURCES): Likewise. * conf/powerpc-ieee1275.rmk (grub_probe_SOURCES): Add fs/ntfs.c. (grub_emu_SOURCES): Likewise. * conf/misc.c (grub_utf16_to_utf8): Fix unicode conversion bug. * fs/ntfs.c: New file. Index: conf/common.rmk =================================================================== RCS file: /sources/grub/grub2/conf/common.rmk,v retrieving revision 1.15 diff -u -p -r1.15 common.rmk --- conf/common.rmk 22 Jul 2007 19:17:22 -0000 1.15 +++ conf/common.rmk 28 Jul 2007 15:45:20 -0000 @@ -79,7 +79,7 @@ update-grub_DATA += util/grub.d/README # Filing systems. -pkgdata_MODULES += fshelp.mod fat.mod ufs.mod ext2.mod \ +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 @@ -103,6 +103,11 @@ ext2_mod_SOURCES = fs/ext2.c ext2_mod_CFLAGS = $(COMMON_CFLAGS) ext2_mod_LDFLAGS = $(COMMON_LDFLAGS) +# For ntfs.mod. +ntfs_mod_SOURCES = fs/ntfs.c +ntfs_mod_CFLAGS = $(COMMON_CFLAGS) +ntfs_mod_LDFLAGS = $(COMMON_LDFLAGS) + # For minix.mod. minix_mod_SOURCES = fs/minix.c minix_mod_CFLAGS = $(COMMON_CFLAGS) Index: conf/i386-pc.rmk =================================================================== RCS file: /sources/grub/grub2/conf/i386-pc.rmk,v retrieving revision 1.84 diff -u -p -r1.84 i386-pc.rmk --- conf/i386-pc.rmk 25 Jul 2007 00:44:00 -0000 1.84 +++ conf/i386-pc.rmk 28 Jul 2007 15:45:21 -0000 @@ -67,7 +67,7 @@ grub_setup_SOURCES = util/i386/pc/grub-s util/misc.c util/getroot.c kern/device.c kern/disk.c \ kern/err.c kern/misc.c fs/fat.c fs/ext2.c fs/xfs.c fs/affs.c \ 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 \ + 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 @@ -81,7 +81,7 @@ grub_probe_SOURCES = util/grub-probe.c \ kern/device.c kern/disk.c kern/err.c kern/misc.c fs/fat.c \ fs/ext2.c kern/parser.c kern/partition.c \ partmap/pc.c partmap/apple.c partmap/gpt.c \ - fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c kern/fs.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 @@ -97,6 +97,7 @@ grub_emu_SOURCES = commands/boot.c comma 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 \ io/gzio.c \ kern/device.c kern/disk.c kern/dl.c kern/elf.c kern/env.c \ kern/err.c \ Index: conf/i386-efi.rmk =================================================================== RCS file: /sources/grub/grub2/conf/i386-efi.rmk,v retrieving revision 1.18 diff -u -p -r1.18 i386-efi.rmk --- conf/i386-efi.rmk 22 Jul 2007 19:17:24 -0000 1.18 +++ conf/i386-efi.rmk 28 Jul 2007 15:45:21 -0000 @@ -33,7 +33,7 @@ grub_probe_SOURCES = util/grub-probe.c \ kern/device.c kern/disk.c kern/err.c kern/misc.c fs/fat.c \ fs/ext2.c kern/parser.c kern/partition.c \ partmap/pc.c partmap/apple.c partmap/gpt.c \ - fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c kern/fs.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 @@ -49,6 +49,7 @@ 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 \ 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 1.68 diff -u -p -r1.68 powerpc-ieee1275.rmk --- conf/powerpc-ieee1275.rmk 25 Jul 2007 00:44:00 -0000 1.68 +++ conf/powerpc-ieee1275.rmk 28 Jul 2007 15:45:21 -0000 @@ -45,7 +45,7 @@ grub_probe_SOURCES = util/grub-probe.c \ kern/device.c kern/disk.c kern/err.c kern/misc.c fs/fat.c \ fs/ext2.c kern/parser.c kern/partition.c \ partmap/pc.c partmap/apple.c partmap/gpt.c \ - fs/ufs.c fs/minix.c fs/hfs.c fs/jfs.c kern/fs.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 @@ -60,6 +60,7 @@ 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 \ 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: kern/misc.c =================================================================== RCS file: /sources/grub/grub2/kern/misc.c,v retrieving revision 1.35 diff -u -p -r1.35 misc.c --- kern/misc.c 21 Jul 2007 23:32:26 -0000 1.35 +++ kern/misc.c 28 Jul 2007 15:45:22 -0000 @@ -960,8 +960,8 @@ grub_utf16_to_utf8 (grub_uint8_t *dest, } else { - *dest++ = (code >> 16) | 0xE0; - *dest++ = ((code >> 12) & 0x3F) | 0x80; + *dest++ = (code >> 12) | 0xE0; + *dest++ = ((code >> 6) & 0x3F) | 0x80; *dest++ = (code & 0x3F) | 0x80; } } Index: fs/ntfs.c =================================================================== RCS file: /sources/grub/grub2/fs/ntfs.c,v diff -Nu fs/ntfs.c --- /dev/null 2007-07-28 19:10:54.060000000 +0800 +++ fs/ntfs.c 2007-07-29 00:02:01.000000000 +0800 @@ -0,0 +1,1601 @@ +/* ntfs.c - NTFS filesystem */ +/* + * GRUB -- GRand Unified Bootloader + * 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 . + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#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 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; + void (*read_hook) (grub_disk_addr_t sector, unsigned offset, + unsigned length); +}; + +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; + unsigned long vcn_offset; + char *cur_run; + struct grub_ntfs_attr *attr; + struct grub_ntfs_comp comp; +}; + +#ifndef GRUB_UTIL +static grub_dl_t my_mod; +#endif + +static grub_err_t +fixup (struct grub_ntfs_data *data, char *buf, int len, char *magic) +{ + int ss; + char *pu; + unsigned us; + + if (grub_memcmp (buf, magic, 4)) + return grub_error (GRUB_ERR_BAD_FS, "%s label not found", magic); + + ss = u16at (buf, 6) - 1; + if (ss * (int) data->blocksize != len * GRUB_DISK_SECTOR_SIZE) + return grub_error (GRUB_ERR_BAD_FS, "Size not match", + ss * (int) data->blocksize, + len * GRUB_DISK_SECTOR_SIZE); + pu = buf + u16at (buf, 4); + us = u16at (pu, 0); + buf -= 2; + while (ss > 0) + { + buf += data->blocksize; + pu += 2; + if (u16at (buf, 0) != us) + return grub_error (GRUB_ERR_BAD_FS, "Fixup signature not match"); + v16at (buf, 0) = v16at (pu, 0); + ss--; + } + + return 0; +} + +static grub_err_t read_mft (struct grub_ntfs_data *data, char *buf, + unsigned long mftno); +static grub_err_t read_attr (struct grub_ntfs_attr *at, char *dest, + unsigned long ofs, unsigned long len, + int cached); +static grub_err_t read_data (struct grub_ntfs_attr *at, char *pa, char *dest, + unsigned long ofs, unsigned long len, + int cached); + +static void +init_attr (struct grub_ntfs_attr *at, struct grub_ntfs_file *mft) +{ + at->mft = mft; + at->flags = (mft == &mft->data->mmft) ? AF_MMFT : 0; + at->attr_nxt = mft->buf + u16at (mft->buf, 0x14); + at->attr_end = at->emft_buf = at->edat_buf = at->sbuf = NULL; +} + +static void +free_attr (struct grub_ntfs_attr *at) +{ + grub_free (at->emft_buf); + grub_free (at->edat_buf); + grub_free (at->sbuf); +} + +static char * +find_attr (struct grub_ntfs_attr *at, unsigned char attr) +{ + if (at->flags & AF_ALST) + { + retry: + while (at->attr_nxt < at->attr_end) + { + at->attr_cur = at->attr_nxt; + at->attr_nxt += u16at (at->attr_cur, 4); + if (((unsigned char) *at->attr_cur == attr) || (attr == 0)) + { + char *new_pos; + + if (at->flags & AF_MMFT) + { + if ((grub_disk_read + (at->mft->data->disk, v32at (at->attr_cur, 0x10), 0, + 512, at->emft_buf)) + || + (grub_disk_read + (at->mft->data->disk, v32at (at->attr_cur, 0x14), 0, + 512, at->emft_buf + 512))) + return NULL; + + if (fixup + (at->mft->data, at->emft_buf, at->mft->data->mft_size, + "FILE")) + return NULL; + } + else + { + if (read_mft (at->mft->data, at->emft_buf, + u32at (at->attr_cur, 0x10))) + return NULL; + } + + new_pos = &at->emft_buf[u16at (at->emft_buf, 0x14)]; + while ((unsigned char) *new_pos != 0xFF) + { + if (((unsigned char) *new_pos == + (unsigned char) *at->attr_cur) + && (u16at (new_pos, 0xE) == u16at (at->attr_cur, 0x18))) + { + return new_pos; + } + new_pos += u16at (new_pos, 4); + } + grub_error (GRUB_ERR_BAD_FS, + "Can\'t find 0x%X in attribute list", + (unsigned char) *at->attr_cur); + return NULL; + } + } + return NULL; + } + at->attr_cur = at->attr_nxt; + while ((unsigned char) *at->attr_cur != 0xFF) + { + at->attr_nxt += u16at (at->attr_cur, 4); + if ((unsigned char) *at->attr_cur == AT_ATTRIBUTE_LIST) + at->attr_end = at->attr_cur; + if (((unsigned char) *at->attr_cur == attr) || (attr == 0)) + return at->attr_cur; + at->attr_cur = at->attr_nxt; + } + if (at->attr_end) + { + char *pa; + + at->emft_buf = grub_malloc (at->mft->data->mft_size << BLK_SHR); + if (at->emft_buf == NULL) + return NULL; + + pa = at->attr_end; + if (pa[8]) + { + if (u32at (pa, 0x28) > 4096) + { + grub_error (GRUB_ERR_BAD_FS, + "Non-resident attribute list too large"); + return NULL; + } + at->attr_cur = at->attr_end; + at->edat_buf = grub_malloc (u32at (pa, 0x28)); + if (!at->edat_buf) + return NULL; + if (read_data (at, pa, at->edat_buf, 0, u32at (pa, 0x28), 0)) + { + grub_error (GRUB_ERR_BAD_FS, + "Fail to read non-resident attribute list"); + return NULL; + } + at->attr_nxt = at->edat_buf; + at->attr_end = at->edat_buf + u32at (pa, 0x30); + } + else + { + at->attr_nxt = at->attr_end + u16at (pa, 0x14); + at->attr_end = at->attr_end + u32at (pa, 4); + } + at->flags |= AF_ALST; + while (at->attr_nxt < at->attr_end) + { + if (((unsigned char) *at->attr_nxt == attr) || (attr == 0)) + break; + at->attr_nxt += u16at (at->attr_nxt, 4); + } + if (at->attr_nxt >= at->attr_end) + return NULL; + + if ((at->flags & AF_MMFT) && (attr == AT_DATA)) + { + at->flags |= AF_GPOS; + at->attr_cur = at->attr_nxt; + pa = at->attr_cur; + v32at (pa, 0x10) = at->mft->data->mft_start; + v32at (pa, 0x14) = at->mft->data->mft_start + 1; + pa = at->attr_nxt + u16at (pa, 4); + while (pa < at->attr_end) + { + if ((unsigned char) *pa != attr) + break; + if (read_attr + (at, pa + 0x10, + u32at (pa, 0x10) * (at->mft->data->mft_size << BLK_SHR), + at->mft->data->mft_size << BLK_SHR, 0)) + return NULL; + pa += u16at (pa, 4); + } + at->attr_nxt = at->attr_cur; + at->flags &= ~AF_GPOS; + } + goto retry; + } + return NULL; +} + +static char * +locate_attr (struct grub_ntfs_attr *at, struct grub_ntfs_file *mft, + unsigned char attr) +{ + char *pa; + + init_attr (at, mft); + if ((pa = find_attr (at, attr)) == NULL) + return NULL; + if ((at->flags & AF_ALST) == 0) + { + while (1) + { + if ((pa = find_attr (at, attr)) == NULL) + break; + if (at->flags & AF_ALST) + return pa; + } + grub_errno = GRUB_ERR_NONE; + free_attr (at); + init_attr (at, mft); + pa = find_attr (at, attr); + } + return pa; +} + +static char * +read_run_data (char *run, int nn, unsigned long *val, int sig) +{ + unsigned long r, v; + + r = 0; + v = 1; + + while (nn--) + { + r += v * (*(unsigned char *) (run++)); + v <<= 8; + } + + if ((sig) && (r & (v >> 1))) + r -= v; + + *val = r; + return run; +} + +static grub_err_t +read_run_list (struct grub_ntfs_rlst *ctx) +{ + int c1, c2; + unsigned long val; + char *run; + + run = ctx->cur_run; +retry: + c1 = ((unsigned char) (*run) & 0xF); + c2 = ((unsigned char) (*run) >> 4); + if (!c1) + { + if ((ctx->attr) && (ctx->attr->flags & AF_ALST)) + { + void (*save_hook) (grub_disk_addr_t sector, unsigned offset, + unsigned length); + + save_hook = ctx->comp.disk->read_hook; + ctx->comp.disk->read_hook = 0; + run = find_attr (ctx->attr, (unsigned char) *ctx->attr->attr_cur); + ctx->comp.disk->read_hook = save_hook; + if (run) + { + if (run[8] == 0) + return grub_error (GRUB_ERR_BAD_FS, + "$DATA should be non-resident"); + + run += u16at (run, 0x20); + ctx->curr_lcn = 0; + goto retry; + } + } + return grub_error (GRUB_ERR_BAD_FS, "Run list overflow\n"); + } + run = read_run_data (run + 1, c1, &val, 0); /* length of current VCN */ + ctx->curr_vcn = ctx->next_vcn; + ctx->next_vcn += val; + run = read_run_data (run, c2, &val, 1); /* offset to previous LCN */ + ctx->curr_lcn += val; + if (val == 0) + ctx->flags |= RF_BLNK; + else + ctx->flags &= ~RF_BLNK; + ctx->cur_run = run; + 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, "B2"); + 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) +{ + if (ctx->flags & RF_COMP) + { + int cpb = ((COM_LEN >> BLK_SHR) / 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; + } + if (ctx->target_vcn + 16 < ctx->next_vcn) + return grub_error (GRUB_ERR_BAD_FS, + "Compression block should be 16 sector long"); + } + + 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->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; + } + } + } + } + else + { + while (num) + { + int nn, ss; + + nn = + (ctx->next_vcn - ctx->target_vcn) * ctx->comp.spc - + ctx->vcn_offset; + + if (nn > num) + nn = num; + + if (buf) + { + if (ctx->flags & RF_BLNK) + grub_memset (buf, 0, nn << BLK_SHR); + else + if (grub_disk_read + (ctx->comp.disk, + (ctx->target_vcn - ctx->curr_vcn + + ctx->curr_lcn) * ctx->comp.spc + ctx->vcn_offset, 0, + nn << BLK_SHR, buf)) + return grub_errno; + buf += (nn << BLK_SHR); + } + ss = ctx->target_vcn * ctx->comp.spc + ctx->vcn_offset + nn; + ctx->target_vcn = ss / ctx->comp.spc; + ctx->vcn_offset = ss % ctx->comp.spc; + num -= nn; + if (num == 0) + break; + + if (ctx->target_vcn >= ctx->next_vcn) + { + if (read_run_list (ctx)) + return grub_errno; + } + } + } + return 0; +} + +static grub_err_t +read_data (struct grub_ntfs_attr *at, char *pa, char *dest, unsigned long ofs, + unsigned long len, int cached) +{ + unsigned long vcn, blk_size; + struct grub_ntfs_rlst cc, *ctx; + grub_err_t ret; + + if (len == 0) + return 0; + + grub_memset (&cc, 0, sizeof (cc)); + ctx = &cc; + ctx->attr = at; + ctx->comp.spc = at->mft->data->spc; + ctx->comp.disk = at->mft->data->disk; + + if (pa[8] == 0) + { + if (ofs + len > u32at (pa, 0x10)) + return grub_error (GRUB_ERR_BAD_FS, "Read out of range"); + grub_memcpy (dest, pa + u32at (pa, 0x14) + ofs, len); + return 0; + } + + if (u16at (pa, 0xC) & FLAG_COMPRESSED) + ctx->flags |= RF_COMP; + else + ctx->flags &= ~RF_COMP; + ctx->cur_run = pa + u16at (pa, 0x20); + blk_size = (ctx->flags & RF_COMP) ? 4096 : 512; + + if ((ctx->flags & RF_COMP) && (!cached)) + return grub_error (GRUB_ERR_BAD_FS, "Attribute can\'t be compressed"); + + if (cached) + { + if (at->sbuf) + { + if ((ofs & (~(blk_size - 1))) == at->save_pos) + { + unsigned long n; + + n = blk_size - (ofs - at->save_pos); + if (n > len) + n = len; + + grub_memcpy (dest, at->sbuf + ofs - at->save_pos, n); + if (n == len) + return 0; + + dest += n; + len -= n; + ofs += n; + } + } + else + { + at->sbuf = grub_malloc (blk_size); + if (at->sbuf == NULL) + return grub_errno; + at->save_pos = 1; + } + } + + if (ctx->flags & RF_COMP) + { + vcn = ctx->target_vcn = (ofs / 4096) * (8 / ctx->comp.spc); + ctx->vcn_offset = 0; + ctx->target_vcn &= ~0xF; + } + else + { + vcn = ctx->target_vcn = (ofs >> BLK_SHR) / ctx->comp.spc; + ctx->vcn_offset = (ofs >> BLK_SHR) % ctx->comp.spc; + } + + ctx->next_vcn = u32at (pa, 0x10); + ctx->curr_lcn = 0; + while (ctx->next_vcn <= ctx->target_vcn) + { + if (read_run_list (ctx)) + return grub_errno; + } + + if (at->flags & AF_GPOS) + { + unsigned long st0, st1; + + st0 = + (ctx->target_vcn - ctx->curr_vcn + ctx->curr_lcn) * ctx->comp.spc + + ctx->vcn_offset; + st1 = st0 + 1; + if (st1 == + (ctx->next_vcn - ctx->curr_vcn + ctx->curr_lcn) * ctx->comp.spc) + { + if (read_run_list (ctx)) + return grub_errno; + st1 = ctx->curr_lcn * ctx->comp.spc; + } + v32at (dest, 0) = st0; + v32at (dest, 4) = st1; + return 0; + } + + ctx->comp.comp_head = ctx->comp.comp_tail = 0; + if (ctx->flags & RF_COMP) + { + ctx->comp.cbuf = grub_malloc ((ctx->comp.spc) << BLK_SHR); + if (!ctx->comp.cbuf) + return 0; + } + + ret = 0; + + if ((cached) && (u16at (pa, 0xC) & (FLAG_COMPRESSED + FLAG_SPARSE)) == 0) + ctx->comp.disk->read_hook = at->mft->read_hook; + + if ((vcn > ctx->target_vcn) && + (read_block (ctx, NULL, ((vcn - ctx->target_vcn) * ctx->comp.spc) / 8))) + { + ret = grub_errno; + goto quit; + } + + if (ofs % blk_size) + { + unsigned long t, n, o; + + if (!cached) + { + ret = grub_error (GRUB_ERR_BAD_FS, "Invalid range"); + goto quit; + } + + 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 % blk_size; + n = blk_size - 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 / blk_size)) + { + ret = grub_errno; + goto quit; + } + + dest += (len / blk_size) * blk_size; + len = len % blk_size; + if (len) + { + unsigned long t; + + if (!cached) + { + ret = grub_error (GRUB_ERR_BAD_FS, "Invalid range"); + goto quit; + } + + 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; +} + +static grub_err_t +read_attr (struct grub_ntfs_attr *at, char *dest, unsigned long ofs, + unsigned long len, int cached) +{ + char *save_cur; + unsigned char attr; + char *pp; + grub_err_t ret; + + save_cur = at->attr_cur; + at->attr_nxt = at->attr_cur; + attr = (unsigned char) *at->attr_nxt; + if (at->flags & AF_ALST) + { + char *pa; + unsigned long vcn; + + vcn = ofs / (at->mft->data->spc << BLK_SHR); + pa = at->attr_nxt + u16at (at->attr_nxt, 4); + while (pa < at->attr_end) + { + if ((unsigned char) *pa != attr) + break; + if (u32at (pa, 8) > vcn) + break; + at->attr_nxt = pa; + pa += u16at (pa, 4); + } + } + pp = find_attr (at, attr); + if (pp) + ret = read_data (at, pp, dest, ofs, len, cached); + else + ret = + (grub_errno) ? grub_errno : grub_error (GRUB_ERR_BAD_FS, + "Attribute not found"); + at->attr_cur = save_cur; + return ret; +} + +static grub_err_t +read_mft (struct grub_ntfs_data *data, char *buf, unsigned long mftno) +{ + if (read_attr + (&data->mmft.attr, buf, mftno * (data->mft_size << BLK_SHR), + data->mft_size << BLK_SHR, 0)) + return grub_error (GRUB_ERR_BAD_FS, "Read MFT 0x%X fails", mftno); + return fixup (data, buf, data->mft_size, "FILE"); +} + +static grub_err_t +init_file (struct grub_ntfs_file *mft, grub_uint32_t mftno) +{ + unsigned short flag; + + mft->inode_read = 1; + + mft->buf = grub_malloc (mft->data->mft_size << BLK_SHR); + if (mft->buf == NULL) + return grub_errno; + + if (read_mft (mft->data, mft->buf, mftno)) + return grub_errno; + + flag = u16at (mft->buf, 0x16); + if ((flag & 1) == 0) + return grub_error (GRUB_ERR_BAD_FS, "MFT 0x%X is not in use", mftno); + + if ((flag & 2) == 0) + { + char *pa; + + pa = locate_attr (&mft->attr, mft, AT_DATA); + if (pa == NULL) + return grub_error (GRUB_ERR_BAD_FS, "No $DATA in MFT 0x%X", mftno); + + if (!pa[8]) + mft->size = u32at (pa, 0x10); + else + mft->size = u32at (pa, 0x30); + + if ((mft->attr.flags & AF_ALST) == 0) + mft->attr.attr_end = 0; /* Don't jump to attribute list */ + } + else + init_attr (&mft->attr, mft); + + return 0; +} + +static void +free_file (struct grub_ntfs_file *mft) +{ + free_attr (&mft->attr); + grub_free (mft->buf); +} + +static int +list_file (struct grub_ntfs_file *diro, char *pos, + int NESTED_FUNC_ATTR + (*hook) (const char *filename, + enum grub_fshelp_filetype filetype, + grub_fshelp_node_t node)) +{ + char *np; + int ns; + + while (1) + { + char *ustr; + if (pos[0xC] & 2) /* end signature */ + break; + + np = pos + 0x52; + ns = (unsigned char) *(np - 2); + if (ns) + { + enum grub_fshelp_filetype type; + struct grub_ntfs_file *fdiro; + + if (u16at (pos, 4)) + { + grub_error (GRUB_ERR_BAD_FS, "64-bit MFT number"); + return 0; + } + + type = + (u32at (pos, 0x48) & ATTR_DIRECTORY) ? GRUB_FSHELP_DIR : + GRUB_FSHELP_REG; + + fdiro = grub_malloc (sizeof (struct grub_ntfs_file)); + if (!fdiro) + return 0; + + grub_memset (fdiro, 0, sizeof (*fdiro)); + fdiro->data = diro->data; + fdiro->ino = u32at (pos, 0); + + ustr = grub_malloc (ns * 4 + 1); + if (ustr == NULL) + return 0; + *grub_utf16_to_utf8 ((grub_uint8_t *) ustr, (grub_uint16_t *) np, + ns) = '\0'; + + if (hook (ustr, type, fdiro)) + { + grub_free (ustr); + return 1; + } + + grub_free (ustr); + } + pos += u16at (pos, 8); + } + return 0; +} + +static int +grub_ntfs_iterate_dir (grub_fshelp_node_t dir, + int NESTED_FUNC_ATTR + (*hook) (const char *filename, + enum grub_fshelp_filetype filetype, + grub_fshelp_node_t node)) +{ + unsigned char *bitmap; + struct grub_ntfs_attr attr, *at; + char *cur_pos, *indx, *bmp; + int bitmap_len, ret = 0; + struct grub_ntfs_file *mft; + + mft = (struct grub_ntfs_file *) dir; + + if (!mft->inode_read) + { + if (init_file (mft, mft->ino)) + return 0; + } + + indx = NULL; + bmp = NULL; + + at = &attr; + init_attr (at, mft); + while (1) + { + if ((cur_pos = find_attr (at, AT_INDEX_ROOT)) == NULL) + { + grub_error (GRUB_ERR_BAD_FS, "No $INDEX_ROOT"); + goto done; + } + + /* Resident, Namelen=4, Offset=0x18, Flags=0x00, Name="$I30" */ + if ((u32at (cur_pos, 8) != 0x180400) || + (u32at (cur_pos, 0x18) != 0x490024) || + (u32at (cur_pos, 0x1C) != 0x300033)) + continue; + cur_pos += u16at (cur_pos, 0x14); + if (*cur_pos != 0x30) /* Not filename index */ + continue; + break; + } + + cur_pos += 0x10; /* Skip index root */ + ret = list_file (mft, cur_pos + u16at (cur_pos, 0), hook); + if (ret) + goto done; + + bitmap = NULL; + bitmap_len = 0; + free_attr (at); + init_attr (at, mft); + while ((cur_pos = find_attr (at, AT_BITMAP)) != NULL) + { + int ofs; + + ofs = (unsigned char) cur_pos[0xA]; + /* Namelen=4, Name="$I30" */ + if ((cur_pos[9] == 4) && + (u32at (cur_pos, ofs) == 0x490024) && + (u32at (cur_pos, ofs + 4) == 0x300033)) + { + if ((at->flags & AF_ALST) && (cur_pos[8] == 0)) + { + grub_error (GRUB_ERR_BAD_FS, + "$BITMAP should be non-resident when in attribute list"); + goto done; + } + if (cur_pos[8] == 0) + { + bitmap = (unsigned char *) (cur_pos + u16at (cur_pos, 0x14)); + bitmap_len = u32at (cur_pos, 0x10); + break; + } + if (u32at (cur_pos, 0x28) > BMP_LEN) + { + grub_error (GRUB_ERR_BAD_FS, "Non-resident $BITMAP too large"); + goto done; + } + bmp = grub_malloc (u32at (cur_pos, 0x28)); + if (bmp == NULL) + goto done; + + bitmap = (unsigned char *) bmp; + bitmap_len = u32at (cur_pos, 0x30); + if (!read_data (at, cur_pos, bmp, 0, u32at (cur_pos, 0x28), 0)) + { + grub_error (GRUB_ERR_BAD_FS, + "Fails to read non-resident $BITMAP"); + goto done; + } + break; + } + } + + free_attr (at); + cur_pos = locate_attr (at, mft, AT_INDEX_ALLOCATION); + while (cur_pos != NULL) + { + /* Non-resident, Namelen=4, Offset=0x40, Flags=0, Name="$I30" */ + if ((u32at (cur_pos, 8) == 0x400401) && + (u32at (cur_pos, 0x40) == 0x490024) && + (u32at (cur_pos, 0x44) == 0x300033)) + break; + cur_pos = find_attr (at, AT_INDEX_ALLOCATION); + } + + if ((!cur_pos) && (bitmap)) + { + grub_error (GRUB_ERR_BAD_FS, "$BITMAP without $INDEX_ALLOCATION"); + goto done; + } + + if (bitmap) + { + unsigned long 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++) + { + if (*bitmap & v) + { + if ((read_attr + (at, indx, i * (mft->data->idx_size << BLK_SHR), + (mft->data->idx_size << BLK_SHR), 0)) + || (fixup (mft->data, indx, mft->data->idx_size, "INDX"))) + goto done; + ret = list_file (mft, &indx[0x18 + u16at (indx, 0x18)], hook); + if (ret) + goto done; + } + v <<= 1; + if (v >= 0x100) + { + v = 1; + bitmap++; + } + } + } + +done: + free_attr (at); + grub_free (indx); + grub_free (bmp); + + return ret; +} + +static struct grub_ntfs_data * +grub_ntfs_mount (grub_disk_t disk) +{ + struct grub_ntfs_bpb bpb; + struct grub_ntfs_data *data = 0; + + if (!disk) + goto fail; + + data = (struct grub_ntfs_data *) grub_malloc (sizeof (*data)); + if (!data) + goto fail; + + grub_memset (data, 0, sizeof (*data)); + + data->disk = disk; + + /* Read the BPB. */ + if (grub_disk_read (disk, 0, 0, sizeof (bpb), (char *) &bpb)) + goto fail; + + if (grub_memcmp ((char *) &bpb.oem_name, "NTFS", 4)) + goto fail; + + data->blocksize = grub_le_to_cpu16 (bpb.bytes_per_sector); + data->spc = bpb.sectors_per_cluster * (data->blocksize >> BLK_SHR); + + if (bpb.clusters_per_mft > 0) + data->mft_size = data->spc * bpb.clusters_per_mft; + else + data->mft_size = 1 << (-bpb.clusters_per_mft - BLK_SHR); + + if (bpb.clusters_per_index > 0) + data->idx_size = data->spc * bpb.clusters_per_index; + else + data->idx_size = 1 << (-bpb.clusters_per_index - BLK_SHR); + + data->mft_start = grub_le_to_cpu64 (bpb.mft_lcn) * data->spc; + + if ((data->mft_size > MAX_MFT) || (data->idx_size > MAX_IDX) || + (data->spc > MAX_SPC) || (data->spc > data->idx_size)) + goto fail; + + data->mmft.data = data; + data->cmft.data = data; + + data->mmft.buf = grub_malloc (data->mft_size << BLK_SHR); + if (!data->mmft.buf) + goto fail; + + if (grub_disk_read + (disk, data->mft_start, 0, data->mft_size << BLK_SHR, data->mmft.buf)) + goto fail; + + if (fixup (data, data->mmft.buf, data->mft_size, "FILE")) + goto fail; + + if (!locate_attr (&data->mmft.attr, &data->mmft, AT_DATA)) + goto fail; + + if (init_file (&data->cmft, FILE_ROOT)) + goto fail; + + return data; + +fail: + grub_error (GRUB_ERR_BAD_FS, "not an ntfs filesystem"); + + if (data) + { + free_file (&data->mmft); + free_file (&data->cmft); + } + return 0; +} + +static grub_err_t +grub_ntfs_dir (grub_device_t device, const char *path, + int (*hook) (const char *filename, int dir)) +{ + struct grub_ntfs_data *data = 0; + struct grub_fshelp_node *fdiro = 0; + + auto int NESTED_FUNC_ATTR iterate (const char *filename, + enum grub_fshelp_filetype filetype, + grub_fshelp_node_t node); + + int NESTED_FUNC_ATTR iterate (const char *filename, + enum grub_fshelp_filetype filetype, + grub_fshelp_node_t node) + { + grub_free (node); + + if (filetype == GRUB_FSHELP_DIR) + return hook (filename, 1); + else + return hook (filename, 0); + + return 0; + } + +#ifndef GRUB_UTIL + grub_dl_ref (my_mod); +#endif + + + data = grub_ntfs_mount (device->disk); + if (!data) + goto fail; + + grub_fshelp_find_file (path, &data->cmft, &fdiro, grub_ntfs_iterate_dir, + 0, GRUB_FSHELP_DIR); + + if (grub_errno) + goto fail; + + grub_ntfs_iterate_dir (fdiro, iterate); + +fail: + if ((fdiro) && (fdiro != &data->cmft)) + { + free_file (fdiro); + grub_free (fdiro); + } + if (data) + { + free_file (&data->mmft); + free_file (&data->cmft); + grub_free (data); + } + +#ifndef GRUB_UTIL + grub_dl_unref (my_mod); +#endif + + return grub_errno; +} + +static grub_err_t +grub_ntfs_open (grub_file_t file, const char *name) +{ + struct grub_ntfs_data *data = 0; + struct grub_fshelp_node *mft = 0; + +#ifndef GRUB_UTIL + grub_dl_ref (my_mod); +#endif + + data = grub_ntfs_mount (file->device->disk); + if (!data) + goto fail; + + grub_fshelp_find_file (name, &data->cmft, &mft, grub_ntfs_iterate_dir, + 0, GRUB_FSHELP_REG); + + if (grub_errno) + goto fail; + + if (mft != &data->cmft) + { + free_file (&data->cmft); + grub_memcpy (&data->cmft, mft, sizeof (*mft)); + grub_free (mft); + if (!data->cmft.inode_read) + { + if (init_file (&data->cmft, data->cmft.ino)) + goto fail; + } + } + + file->size = data->cmft.size; + file->data = data; + file->offset = 0; + + return 0; + +fail: + if (data) + { + free_file (&data->mmft); + free_file (&data->cmft); + grub_free (data); + } + +#ifndef GRUB_UTIL + grub_dl_unref (my_mod); +#endif + + return grub_errno; +} + +static grub_ssize_t +grub_ntfs_read (grub_file_t file, char *buf, grub_size_t len) +{ + struct grub_ntfs_file *mft; + + mft = &((struct grub_ntfs_data *) file->data)->cmft; + if (file->read_hook) + mft->attr.save_pos = 1; + mft->read_hook = file->read_hook; + read_attr (&mft->attr, buf, file->offset, len, 1); + mft->read_hook = NULL; + return (grub_errno) ? 0 : len; +} + +static grub_err_t +grub_ntfs_close (grub_file_t file) +{ + struct grub_ntfs_data *data; + + data = file->data; + + if (data) + { + free_file (&data->mmft); + free_file (&data->cmft); + grub_free (data); + } + +#ifndef GRUB_UTIL + grub_dl_unref (my_mod); +#endif + + return grub_errno; +} + +static grub_err_t +grub_ntfs_label (grub_device_t device, char **label) +{ + struct grub_ntfs_data *data = 0; + struct grub_fshelp_node *mft = 0; + char *pa; + +#ifndef GRUB_UTIL + grub_dl_ref (my_mod); +#endif + + *label = 0; + + data = grub_ntfs_mount (device->disk); + if (!data) + goto fail; + + grub_fshelp_find_file ("/$Volume", &data->cmft, &mft, grub_ntfs_iterate_dir, + 0, GRUB_FSHELP_REG); + + if (grub_errno) + goto fail; + + if (!mft->inode_read) + { + mft->buf = grub_malloc (mft->data->mft_size << BLK_SHR); + if (mft->buf == NULL) + goto fail; + + if (read_mft (mft->data, mft->buf, mft->ino)) + goto fail; + } + + init_attr (&mft->attr, mft); + pa = find_attr (&mft->attr, AT_VOLUME_NAME); + if ((pa) && (pa[8] == 0) && (u32at (pa, 0x10))) + { + char *buf; + int len; + + len = u32at (pa, 0x10) / 2; + buf = grub_malloc (len * 4 + 1); + pa += u16at (pa, 0x14); + *grub_utf16_to_utf8 ((grub_uint8_t *) buf, (grub_uint16_t *) pa, len) = + '\0'; + *label = buf; + } + +fail: + if ((mft) && (mft != &data->cmft)) + { + free_file (mft); + grub_free (mft); + } + if (data) + { + free_file (&data->mmft); + free_file (&data->cmft); + grub_free (data); + } + +#ifndef GRUB_UTIL + grub_dl_unref (my_mod); +#endif + + return grub_errno; +} + +static struct grub_fs grub_ntfs_fs = { + .name = "ntfs", + .dir = grub_ntfs_dir, + .open = grub_ntfs_open, + .read = grub_ntfs_read, + .close = grub_ntfs_close, + .label = grub_ntfs_label, + .next = 0 +}; + +GRUB_MOD_INIT (ntfs) +{ + grub_fs_register (&grub_ntfs_fs); +#ifndef GRUB_UTIL + my_mod = mod; +#endif +} + +GRUB_MOD_FINI (ntfs) +{ + grub_fs_unregister (&grub_ntfs_fs); +}