filesystem support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1403 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Greg Watson
parent
7d2478e962
commit
3cd7fc7640
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/* GRUB compatibility header */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2003 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <fs/vfs.h>
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/* This disables some portion of code */
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#define STAGE1_5 1
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static inline int
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substring (const char *s1, const char *s2)
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{
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while (*s1 == *s2)
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{
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/* The strings match exactly. */
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if (! *(s1++))
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return 0;
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s2 ++;
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}
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/* S1 is a substring of S2. */
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if (*s1 == 0)
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return -1;
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/* S1 isn't a substring. */
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return 1;
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}
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#define MAXINT 0x7fffffff
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/* This is only used by fsys_* to determine if it's hard disk. If it is,
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* they try to guess filesystem type by partition type. I guess it is
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* not necessory, so hardcoded to 0 (first floppy) --ts1 */
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#define current_drive 0
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/* Ditto */
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#define current_slice 0
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extern unsigned long part_start;
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extern unsigned long part_length;
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extern int filepos;
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extern int filemax;
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extern int fsmax;
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/* Error codes (descriptions are in common.c) */
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typedef enum
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{
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ERR_NONE = 0,
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ERR_BAD_FILENAME,
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ERR_BAD_FILETYPE,
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ERR_BAD_GZIP_DATA,
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ERR_BAD_GZIP_HEADER,
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ERR_BAD_PART_TABLE,
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ERR_BAD_VERSION,
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ERR_BELOW_1MB,
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ERR_BOOT_COMMAND,
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ERR_BOOT_FAILURE,
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ERR_BOOT_FEATURES,
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ERR_DEV_FORMAT,
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ERR_DEV_VALUES,
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ERR_EXEC_FORMAT,
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ERR_FILELENGTH,
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ERR_FILE_NOT_FOUND,
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ERR_FSYS_CORRUPT,
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ERR_FSYS_MOUNT,
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ERR_GEOM,
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ERR_NEED_LX_KERNEL,
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ERR_NEED_MB_KERNEL,
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ERR_NO_DISK,
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ERR_NO_PART,
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ERR_NUMBER_PARSING,
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ERR_OUTSIDE_PART,
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ERR_READ,
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ERR_SYMLINK_LOOP,
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ERR_UNRECOGNIZED,
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ERR_WONT_FIT,
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ERR_WRITE,
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ERR_BAD_ARGUMENT,
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ERR_UNALIGNED,
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ERR_PRIVILEGED,
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ERR_DEV_NEED_INIT,
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ERR_NO_DISK_SPACE,
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ERR_NUMBER_OVERFLOW,
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MAX_ERR_NUM
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} fs_error_t;
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extern fs_error_t errnum;
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/* instrumentation variables */
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/* (Not used in FILO) */
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extern void (*disk_read_hook) (int, int, int);
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extern void (*disk_read_func) (int, int, int);
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#define FSYS_BUFLEN 0x8000
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extern char FSYS_BUF[FSYS_BUFLEN];
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#define print_possibilities 0
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#define SECTOR_SIZE 512
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#define SECTOR_BITS 9
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#ifdef CONFIG_FS_FAT
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int fat_mount (void);
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int fat_read (char *buf, int len);
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int fat_dir (char *dirname);
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#endif
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#if CONFIG_FS_EXT2 == 1
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int ext2fs_mount (void);
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int ext2fs_read (char *buf, int len);
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int ext2fs_dir (char *dirname);
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#endif
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#ifdef CONFIG_FS_MINIX
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int minix_mount (void);
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int minix_read (char *buf, int len);
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int minix_dir (char *dirname);
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#endif
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#ifdef CONFIG_FS_REISERFS
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int reiserfs_mount (void);
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int reiserfs_read (char *buf, int len);
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int reiserfs_dir (char *dirname);
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int reiserfs_embed (int *start_sector, int needed_sectors);
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#endif
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#ifdef CONFIG_FS_JFS
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int jfs_mount (void);
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int jfs_read (char *buf, int len);
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int jfs_dir (char *dirname);
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int jfs_embed (int *start_sector, int needed_sectors);
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#endif
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#ifdef CONFIG_FS_XFS
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int xfs_mount (void);
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int xfs_read (char *buf, int len);
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int xfs_dir (char *dirname);
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#endif
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#if CONFIG_FS_ISO9660 == 1
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int iso9660_mount (void);
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int iso9660_read (char *buf, int len);
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int iso9660_dir (char *dirname);
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#endif
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/* This is not a flag actually, but used as if it were a flag. */
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#define PC_SLICE_TYPE_HIDDEN_FLAG 0x10
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#define PC_SLICE_TYPE_NONE 0
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#define PC_SLICE_TYPE_FAT12 1
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#define PC_SLICE_TYPE_FAT16_LT32M 4
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#define PC_SLICE_TYPE_EXTENDED 5
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#define PC_SLICE_TYPE_FAT16_GT32M 6
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#define PC_SLICE_TYPE_FAT32 0xb
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#define PC_SLICE_TYPE_FAT32_LBA 0xc
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#define PC_SLICE_TYPE_FAT16_LBA 0xe
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#define PC_SLICE_TYPE_WIN95_EXTENDED 0xf
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#define PC_SLICE_TYPE_EZD 0x55
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#define PC_SLICE_TYPE_MINIX 0x80
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#define PC_SLICE_TYPE_LINUX_MINIX 0x81
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#define PC_SLICE_TYPE_EXT2FS 0x83
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#define PC_SLICE_TYPE_LINUX_EXTENDED 0x85
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#define PC_SLICE_TYPE_VSTAFS 0x9e
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#define PC_SLICE_TYPE_DELL_UTIL 0xde
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#define PC_SLICE_TYPE_LINUX_RAID 0xfd
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/* For convinience. */
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/* Check if TYPE is a FAT partition type. Clear the hidden flag before
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the check, to allow the user to mount a hidden partition in GRUB. */
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#define IS_PC_SLICE_TYPE_FAT(type) \
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({ int _type = (type) & ~PC_SLICE_TYPE_HIDDEN_FLAG; \
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_type == PC_SLICE_TYPE_FAT12 \
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|| _type == PC_SLICE_TYPE_FAT16_LT32M \
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|| _type == PC_SLICE_TYPE_FAT16_GT32M \
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|| _type == PC_SLICE_TYPE_FAT16_LBA \
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|| _type == PC_SLICE_TYPE_FAT32 \
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|| _type == PC_SLICE_TYPE_FAT32_LBA \
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|| _type == PC_SLICE_TYPE_DELL_UTIL; })
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#define IS_PC_SLICE_TYPE_MINIX(type) \
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(((type) == PC_SLICE_TYPE_MINIX) \
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|| ((type) == PC_SLICE_TYPE_LINUX_MINIX))
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#define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs) 0
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/* possible values for the *BSD-style partition type */
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#define FS_UNUSED 0 /* unused */
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#define FS_SWAP 1 /* swap */
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#define FS_V6 2 /* Sixth Edition */
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#define FS_V7 3 /* Seventh Edition */
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#define FS_SYSV 4 /* System V */
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#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
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#define FS_V8 6 /* Eighth Edition, 4K blocks */
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#define FS_BSDFFS 7 /* 4.2BSD fast file system */
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#define FS_MSDOS 8 /* MSDOS file system */
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#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
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#define FS_OTHER 10 /* in use, but unknown/unsupported */
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#define FS_HPFS 11 /* OS/2 high-performance file system */
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#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
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#define FS_BOOT 13 /* partition contains bootstrap */
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#define FS_ADOS 14 /* AmigaDOS fast file system */
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#define FS_HFS 15 /* Macintosh HFS */
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#define FS_FILECORE 16 /* Acorn Filecore Filing System */
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#define FS_EXT2FS 17 /* Linux Extended 2 file system */
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@ -0,0 +1,310 @@
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#ifndef _ISO9660_H
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#define _ISO9660_H
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/*
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* The isofs filesystem constants/structures
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*/
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/* This part borrowed from the bsd386 isofs */
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#define ISODCL(from, to) (to - from + 1)
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struct iso_volume_descriptor {
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char type[ISODCL(1,1)]; /* 711 */
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char id[ISODCL(2,6)];
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char version[ISODCL(7,7)];
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char data[ISODCL(8,2048)];
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};
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#define ISO_SECTOR_BITS (11)
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#define ISO_SECTOR_SIZE (1<<ISO_SECTOR_BITS)
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#define ISO_REGULAR 1 /* regular file */
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#define ISO_DIRECTORY 2 /* directory */
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#define ISO_OTHER 0 /* other file (with Rock Ridge) */
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#define RR_FLAG_PX 0x01 /* have POSIX file attributes */
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#define RR_FLAG_NM 0x08 /* have alternate file name */
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/* POSIX file attributes for Rock Ridge extensions */
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#define POSIX_S_IFMT 0xF000
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#define POSIX_S_IFREG 0x8000
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#define POSIX_S_IFDIR 0x4000
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/* volume descriptor types */
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#define ISO_VD_PRIMARY 1
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#define ISO_VD_SUPPLEMENTARY 2
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#define ISO_VD_END 255
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#define ISO_STANDARD_ID "CD001"
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struct iso_primary_descriptor {
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char type [ISODCL ( 1, 1)]; /* 711 */
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char id [ISODCL ( 2, 6)];
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char version [ISODCL ( 7, 7)]; /* 711 */
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char unused1 [ISODCL ( 8, 8)];
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char system_id [ISODCL ( 9, 40)]; /* achars */
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char volume_id [ISODCL ( 41, 72)]; /* dchars */
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char unused2 [ISODCL ( 73, 80)];
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char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
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char unused3 [ISODCL ( 89, 120)];
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char volume_set_size [ISODCL (121, 124)]; /* 723 */
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char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
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char logical_block_size [ISODCL (129, 132)]; /* 723 */
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char path_table_size [ISODCL (133, 140)]; /* 733 */
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char type_l_path_table [ISODCL (141, 144)]; /* 731 */
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char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
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char type_m_path_table [ISODCL (149, 152)]; /* 732 */
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char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
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char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
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char volume_set_id [ISODCL (191, 318)]; /* dchars */
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char publisher_id [ISODCL (319, 446)]; /* achars */
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char preparer_id [ISODCL (447, 574)]; /* achars */
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char application_id [ISODCL (575, 702)]; /* achars */
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char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
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char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
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char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
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char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
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char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
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char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
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char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
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char file_structure_version [ISODCL (882, 882)]; /* 711 */
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char unused4 [ISODCL (883, 883)];
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char application_data [ISODCL (884, 1395)];
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char unused5 [ISODCL (1396, 2048)];
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};
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/* Almost the same as the primary descriptor but two fields are specified */
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struct iso_supplementary_descriptor {
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char type [ISODCL ( 1, 1)]; /* 711 */
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char id [ISODCL ( 2, 6)];
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char version [ISODCL ( 7, 7)]; /* 711 */
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char flags [ISODCL ( 8, 8)]; /* 853 */
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char system_id [ISODCL ( 9, 40)]; /* achars */
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char volume_id [ISODCL ( 41, 72)]; /* dchars */
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char unused2 [ISODCL ( 73, 80)];
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char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
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char escape [ISODCL ( 89, 120)]; /* 856 */
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char volume_set_size [ISODCL (121, 124)]; /* 723 */
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char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
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char logical_block_size [ISODCL (129, 132)]; /* 723 */
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char path_table_size [ISODCL (133, 140)]; /* 733 */
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char type_l_path_table [ISODCL (141, 144)]; /* 731 */
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char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
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char type_m_path_table [ISODCL (149, 152)]; /* 732 */
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char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
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char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
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char volume_set_id [ISODCL (191, 318)]; /* dchars */
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char publisher_id [ISODCL (319, 446)]; /* achars */
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char preparer_id [ISODCL (447, 574)]; /* achars */
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char application_id [ISODCL (575, 702)]; /* achars */
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char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
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char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
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char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
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char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
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char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
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char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
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char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
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char file_structure_version [ISODCL (882, 882)]; /* 711 */
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char unused4 [ISODCL (883, 883)];
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char application_data [ISODCL (884, 1395)];
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char unused5 [ISODCL (1396, 2048)];
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};
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#define HS_STANDARD_ID "CDROM"
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struct hs_volume_descriptor {
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char foo [ISODCL ( 1, 8)]; /* 733 */
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char type [ISODCL ( 9, 9)]; /* 711 */
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char id [ISODCL ( 10, 14)];
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char version [ISODCL ( 15, 15)]; /* 711 */
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char data[ISODCL(16,2048)];
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};
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|
|
||||||
|
struct hs_primary_descriptor {
|
||||||
|
char foo [ISODCL ( 1, 8)]; /* 733 */
|
||||||
|
char type [ISODCL ( 9, 9)]; /* 711 */
|
||||||
|
char id [ISODCL ( 10, 14)];
|
||||||
|
char version [ISODCL ( 15, 15)]; /* 711 */
|
||||||
|
char unused1 [ISODCL ( 16, 16)]; /* 711 */
|
||||||
|
char system_id [ISODCL ( 17, 48)]; /* achars */
|
||||||
|
char volume_id [ISODCL ( 49, 80)]; /* dchars */
|
||||||
|
char unused2 [ISODCL ( 81, 88)]; /* 733 */
|
||||||
|
char volume_space_size [ISODCL ( 89, 96)]; /* 733 */
|
||||||
|
char unused3 [ISODCL ( 97, 128)]; /* 733 */
|
||||||
|
char volume_set_size [ISODCL (129, 132)]; /* 723 */
|
||||||
|
char volume_sequence_number [ISODCL (133, 136)]; /* 723 */
|
||||||
|
char logical_block_size [ISODCL (137, 140)]; /* 723 */
|
||||||
|
char path_table_size [ISODCL (141, 148)]; /* 733 */
|
||||||
|
char type_l_path_table [ISODCL (149, 152)]; /* 731 */
|
||||||
|
char unused4 [ISODCL (153, 180)]; /* 733 */
|
||||||
|
char root_directory_record [ISODCL (181, 214)]; /* 9.1 */
|
||||||
|
};
|
||||||
|
|
||||||
|
/* We use this to help us look up the parent inode numbers. */
|
||||||
|
|
||||||
|
struct iso_path_table{
|
||||||
|
unsigned char name_len[2]; /* 721 */
|
||||||
|
char extent[4]; /* 731 */
|
||||||
|
char parent[2]; /* 721 */
|
||||||
|
char name[0];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
/* high sierra is identical to iso, except that the date is only 6 bytes, and
|
||||||
|
there is an extra reserved byte after the flags */
|
||||||
|
|
||||||
|
struct iso_directory_record {
|
||||||
|
char length [ISODCL (1, 1)]; /* 711 */
|
||||||
|
char ext_attr_length [ISODCL (2, 2)]; /* 711 */
|
||||||
|
char extent [ISODCL (3, 10)]; /* 733 */
|
||||||
|
char size [ISODCL (11, 18)]; /* 733 */
|
||||||
|
char date [ISODCL (19, 25)]; /* 7 by 711 */
|
||||||
|
char flags [ISODCL (26, 26)];
|
||||||
|
char file_unit_size [ISODCL (27, 27)]; /* 711 */
|
||||||
|
char interleave [ISODCL (28, 28)]; /* 711 */
|
||||||
|
char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
|
||||||
|
unsigned char name_len [ISODCL (33, 33)]; /* 711 */
|
||||||
|
char name [0];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct SU_SP{
|
||||||
|
unsigned char magic[2];
|
||||||
|
unsigned char skip;
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct SU_CE{
|
||||||
|
char extent[8];
|
||||||
|
char offset[8];
|
||||||
|
char size[8];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct SU_ER{
|
||||||
|
unsigned char len_id;
|
||||||
|
unsigned char len_des;
|
||||||
|
unsigned char len_src;
|
||||||
|
unsigned char ext_ver;
|
||||||
|
char data[0];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct RR_RR{
|
||||||
|
char flags[1];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct RR_PX{
|
||||||
|
char mode[8];
|
||||||
|
char n_links[8];
|
||||||
|
char uid[8];
|
||||||
|
char gid[8];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct RR_PN{
|
||||||
|
char dev_high[8];
|
||||||
|
char dev_low[8];
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
struct SL_component{
|
||||||
|
unsigned char flags;
|
||||||
|
unsigned char len;
|
||||||
|
char text[0];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct RR_SL{
|
||||||
|
unsigned char flags;
|
||||||
|
struct SL_component link;
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct RR_NM{
|
||||||
|
unsigned char flags;
|
||||||
|
char name[0];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct RR_CL{
|
||||||
|
char location[8];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct RR_PL{
|
||||||
|
char location[8];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct stamp{
|
||||||
|
char time[7];
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
struct RR_TF{
|
||||||
|
char flags;
|
||||||
|
struct stamp times[0]; /* Variable number of these beasts */
|
||||||
|
} __attribute__((packed));
|
||||||
|
|
||||||
|
/* Linux-specific extension for transparent decompression */
|
||||||
|
struct RR_ZF{
|
||||||
|
char algorithm[2];
|
||||||
|
char parms[2];
|
||||||
|
char real_size[8];
|
||||||
|
};
|
||||||
|
|
||||||
|
struct rock_ridge{
|
||||||
|
char signature[2];
|
||||||
|
unsigned char len;
|
||||||
|
unsigned char version;
|
||||||
|
union{
|
||||||
|
struct SU_SP SP;
|
||||||
|
struct SU_CE CE;
|
||||||
|
struct SU_ER ER;
|
||||||
|
struct RR_RR RR;
|
||||||
|
struct RR_PX PX;
|
||||||
|
struct RR_PN PN;
|
||||||
|
struct RR_SL SL;
|
||||||
|
struct RR_NM NM;
|
||||||
|
struct RR_CL CL;
|
||||||
|
struct RR_PL PL;
|
||||||
|
struct RR_TF TF;
|
||||||
|
struct RR_ZF ZF;
|
||||||
|
} u;
|
||||||
|
};
|
||||||
|
|
||||||
|
typedef union RR_ptr {
|
||||||
|
struct rock_ridge *rr;
|
||||||
|
char *ptr;
|
||||||
|
int i;
|
||||||
|
} RR_ptr_t;
|
||||||
|
|
||||||
|
#include <arch/byteorder.h>
|
||||||
|
|
||||||
|
static inline int isonum_711(char *p)
|
||||||
|
{
|
||||||
|
unsigned char x = *(unsigned char *)p;
|
||||||
|
return x;
|
||||||
|
}
|
||||||
|
static inline int isonum_712(char *p)
|
||||||
|
{
|
||||||
|
return *(char *)p;
|
||||||
|
}
|
||||||
|
static inline int isonum_721(char *p)
|
||||||
|
{
|
||||||
|
return le16_to_cpu(*(unsigned short *)p);
|
||||||
|
}
|
||||||
|
static inline int isonum_722(char *p)
|
||||||
|
{
|
||||||
|
return be16_to_cpu(*(unsigned short *)p);
|
||||||
|
}
|
||||||
|
static inline int isonum_723(char *p)
|
||||||
|
{
|
||||||
|
/* Ignore bigendian datum due to broken mastering programs */
|
||||||
|
return le16_to_cpu(*(unsigned short *)p);
|
||||||
|
}
|
||||||
|
static inline int isonum_731(char *p)
|
||||||
|
{
|
||||||
|
return le32_to_cpu(*(unsigned int *)p);
|
||||||
|
}
|
||||||
|
static inline int isonum_732(char *p)
|
||||||
|
{
|
||||||
|
return be32_to_cpu(*(unsigned int *)p);
|
||||||
|
}
|
||||||
|
static inline int isonum_733(char *p)
|
||||||
|
{
|
||||||
|
/* Ignore bigendian datum due to broken mastering programs */
|
||||||
|
return le32_to_cpu(*(unsigned int *)p);
|
||||||
|
}
|
||||||
|
#endif /* _ISO9660_H */
|
||||||
|
|
@ -0,0 +1,29 @@
|
||||||
|
#ifndef _VFS_H
|
||||||
|
#define _VFS_H
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
#define DISK_IDE 1
|
||||||
|
#define DISK_MEM 2
|
||||||
|
|
||||||
|
int devopen(const char *name, int *reopen);
|
||||||
|
int devread(unsigned long sector, unsigned long byte_offset,
|
||||||
|
unsigned long byte_len, void *buf);
|
||||||
|
|
||||||
|
int file_open(const char *filename);
|
||||||
|
int file_read(void *buf, unsigned long len);
|
||||||
|
int file_seek(unsigned long offset);
|
||||||
|
unsigned long file_pos(void);
|
||||||
|
unsigned long file_size(void);
|
||||||
|
|
||||||
|
#define PARTITION_UNKNOWN 0xbad6a7
|
||||||
|
|
||||||
|
#ifdef CONFIG_FS_ELTORITO
|
||||||
|
int open_eltorito_image(int part, unsigned long *start, unsigned long *length);
|
||||||
|
#else
|
||||||
|
# define open_eltorito_image(x,y,z) PARTITION_UNKNOWN
|
||||||
|
#endif
|
||||||
|
|
||||||
|
extern int using_devsize;
|
||||||
|
|
||||||
|
#endif /* _VFS_H */
|
||||||
Loading…
Reference in New Issue