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authorGreg Watson <jarrah@users.sourceforge.net>2004-03-13 03:33:34 +0000
committerGreg Watson <jarrah@users.sourceforge.net>2004-03-13 03:33:34 +0000
commit3cd7fc7640b18b3ccefabee2dc03432217c6ed58 (patch)
tree76be94a1467d426a6fe55b718ad5aa27df1386ef /src/include/fs
parent7d2478e962772c46eccdb9a93359710b0ca01dce (diff)
filesystem support
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1403 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/include/fs')
-rw-r--r--src/include/fs/fs.h222
-rw-r--r--src/include/fs/iso9660.h310
-rw-r--r--src/include/fs/vfs.h29
3 files changed, 561 insertions, 0 deletions
diff --git a/src/include/fs/fs.h b/src/include/fs/fs.h
new file mode 100644
index 0000000000..b23a1b5158
--- /dev/null
+++ b/src/include/fs/fs.h
@@ -0,0 +1,222 @@
+/* GRUB compatibility header */
+
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2003 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <fs/vfs.h>
+
+/* This disables some portion of code */
+#define STAGE1_5 1
+
+static inline int
+substring (const char *s1, const char *s2)
+{
+ while (*s1 == *s2)
+ {
+ /* The strings match exactly. */
+ if (! *(s1++))
+ return 0;
+ s2 ++;
+ }
+
+ /* S1 is a substring of S2. */
+ if (*s1 == 0)
+ return -1;
+
+ /* S1 isn't a substring. */
+ return 1;
+}
+
+#define MAXINT 0x7fffffff
+
+/* This is only used by fsys_* to determine if it's hard disk. If it is,
+ * they try to guess filesystem type by partition type. I guess it is
+ * not necessory, so hardcoded to 0 (first floppy) --ts1 */
+#define current_drive 0
+
+/* Ditto */
+#define current_slice 0
+
+extern unsigned long part_start;
+extern unsigned long part_length;
+extern int filepos;
+extern int filemax;
+extern int fsmax;
+
+/* Error codes (descriptions are in common.c) */
+typedef enum
+{
+ ERR_NONE = 0,
+ ERR_BAD_FILENAME,
+ ERR_BAD_FILETYPE,
+ ERR_BAD_GZIP_DATA,
+ ERR_BAD_GZIP_HEADER,
+ ERR_BAD_PART_TABLE,
+ ERR_BAD_VERSION,
+ ERR_BELOW_1MB,
+ ERR_BOOT_COMMAND,
+ ERR_BOOT_FAILURE,
+ ERR_BOOT_FEATURES,
+ ERR_DEV_FORMAT,
+ ERR_DEV_VALUES,
+ ERR_EXEC_FORMAT,
+ ERR_FILELENGTH,
+ ERR_FILE_NOT_FOUND,
+ ERR_FSYS_CORRUPT,
+ ERR_FSYS_MOUNT,
+ ERR_GEOM,
+ ERR_NEED_LX_KERNEL,
+ ERR_NEED_MB_KERNEL,
+ ERR_NO_DISK,
+ ERR_NO_PART,
+ ERR_NUMBER_PARSING,
+ ERR_OUTSIDE_PART,
+ ERR_READ,
+ ERR_SYMLINK_LOOP,
+ ERR_UNRECOGNIZED,
+ ERR_WONT_FIT,
+ ERR_WRITE,
+ ERR_BAD_ARGUMENT,
+ ERR_UNALIGNED,
+ ERR_PRIVILEGED,
+ ERR_DEV_NEED_INIT,
+ ERR_NO_DISK_SPACE,
+ ERR_NUMBER_OVERFLOW,
+
+ MAX_ERR_NUM
+} fs_error_t;
+
+extern fs_error_t errnum;
+
+/* instrumentation variables */
+/* (Not used in FILO) */
+extern void (*disk_read_hook) (int, int, int);
+extern void (*disk_read_func) (int, int, int);
+
+#define FSYS_BUFLEN 0x8000
+extern char FSYS_BUF[FSYS_BUFLEN];
+
+#define print_possibilities 0
+
+#define SECTOR_SIZE 512
+#define SECTOR_BITS 9
+
+#ifdef CONFIG_FS_FAT
+int fat_mount (void);
+int fat_read (char *buf, int len);
+int fat_dir (char *dirname);
+#endif
+
+#if CONFIG_FS_EXT2 == 1
+int ext2fs_mount (void);
+int ext2fs_read (char *buf, int len);
+int ext2fs_dir (char *dirname);
+#endif
+
+#ifdef CONFIG_FS_MINIX
+int minix_mount (void);
+int minix_read (char *buf, int len);
+int minix_dir (char *dirname);
+#endif
+
+#ifdef CONFIG_FS_REISERFS
+int reiserfs_mount (void);
+int reiserfs_read (char *buf, int len);
+int reiserfs_dir (char *dirname);
+int reiserfs_embed (int *start_sector, int needed_sectors);
+#endif
+
+#ifdef CONFIG_FS_JFS
+int jfs_mount (void);
+int jfs_read (char *buf, int len);
+int jfs_dir (char *dirname);
+int jfs_embed (int *start_sector, int needed_sectors);
+#endif
+
+#ifdef CONFIG_FS_XFS
+int xfs_mount (void);
+int xfs_read (char *buf, int len);
+int xfs_dir (char *dirname);
+#endif
+
+#if CONFIG_FS_ISO9660 == 1
+int iso9660_mount (void);
+int iso9660_read (char *buf, int len);
+int iso9660_dir (char *dirname);
+#endif
+
+/* This is not a flag actually, but used as if it were a flag. */
+#define PC_SLICE_TYPE_HIDDEN_FLAG 0x10
+
+#define PC_SLICE_TYPE_NONE 0
+#define PC_SLICE_TYPE_FAT12 1
+#define PC_SLICE_TYPE_FAT16_LT32M 4
+#define PC_SLICE_TYPE_EXTENDED 5
+#define PC_SLICE_TYPE_FAT16_GT32M 6
+#define PC_SLICE_TYPE_FAT32 0xb
+#define PC_SLICE_TYPE_FAT32_LBA 0xc
+#define PC_SLICE_TYPE_FAT16_LBA 0xe
+#define PC_SLICE_TYPE_WIN95_EXTENDED 0xf
+#define PC_SLICE_TYPE_EZD 0x55
+#define PC_SLICE_TYPE_MINIX 0x80
+#define PC_SLICE_TYPE_LINUX_MINIX 0x81
+#define PC_SLICE_TYPE_EXT2FS 0x83
+#define PC_SLICE_TYPE_LINUX_EXTENDED 0x85
+#define PC_SLICE_TYPE_VSTAFS 0x9e
+#define PC_SLICE_TYPE_DELL_UTIL 0xde
+#define PC_SLICE_TYPE_LINUX_RAID 0xfd
+
+/* For convinience. */
+/* Check if TYPE is a FAT partition type. Clear the hidden flag before
+ the check, to allow the user to mount a hidden partition in GRUB. */
+#define IS_PC_SLICE_TYPE_FAT(type) \
+ ({ int _type = (type) & ~PC_SLICE_TYPE_HIDDEN_FLAG; \
+ _type == PC_SLICE_TYPE_FAT12 \
+ || _type == PC_SLICE_TYPE_FAT16_LT32M \
+ || _type == PC_SLICE_TYPE_FAT16_GT32M \
+ || _type == PC_SLICE_TYPE_FAT16_LBA \
+ || _type == PC_SLICE_TYPE_FAT32 \
+ || _type == PC_SLICE_TYPE_FAT32_LBA \
+ || _type == PC_SLICE_TYPE_DELL_UTIL; })
+
+#define IS_PC_SLICE_TYPE_MINIX(type) \
+ (((type) == PC_SLICE_TYPE_MINIX) \
+ || ((type) == PC_SLICE_TYPE_LINUX_MINIX))
+
+#define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs) 0
+
+/* possible values for the *BSD-style partition type */
+#define FS_UNUSED 0 /* unused */
+#define FS_SWAP 1 /* swap */
+#define FS_V6 2 /* Sixth Edition */
+#define FS_V7 3 /* Seventh Edition */
+#define FS_SYSV 4 /* System V */
+#define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */
+#define FS_V8 6 /* Eighth Edition, 4K blocks */
+#define FS_BSDFFS 7 /* 4.2BSD fast file system */
+#define FS_MSDOS 8 /* MSDOS file system */
+#define FS_BSDLFS 9 /* 4.4BSD log-structured file system */
+#define FS_OTHER 10 /* in use, but unknown/unsupported */
+#define FS_HPFS 11 /* OS/2 high-performance file system */
+#define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */
+#define FS_BOOT 13 /* partition contains bootstrap */
+#define FS_ADOS 14 /* AmigaDOS fast file system */
+#define FS_HFS 15 /* Macintosh HFS */
+#define FS_FILECORE 16 /* Acorn Filecore Filing System */
+#define FS_EXT2FS 17 /* Linux Extended 2 file system */
diff --git a/src/include/fs/iso9660.h b/src/include/fs/iso9660.h
new file mode 100644
index 0000000000..1c76800eb8
--- /dev/null
+++ b/src/include/fs/iso9660.h
@@ -0,0 +1,310 @@
+#ifndef _ISO9660_H
+#define _ISO9660_H
+
+/*
+ * The isofs filesystem constants/structures
+ */
+
+/* This part borrowed from the bsd386 isofs */
+#define ISODCL(from, to) (to - from + 1)
+
+struct iso_volume_descriptor {
+ char type[ISODCL(1,1)]; /* 711 */
+ char id[ISODCL(2,6)];
+ char version[ISODCL(7,7)];
+ char data[ISODCL(8,2048)];
+};
+
+#define ISO_SECTOR_BITS (11)
+#define ISO_SECTOR_SIZE (1<<ISO_SECTOR_BITS)
+
+#define ISO_REGULAR 1 /* regular file */
+#define ISO_DIRECTORY 2 /* directory */
+#define ISO_OTHER 0 /* other file (with Rock Ridge) */
+
+#define RR_FLAG_PX 0x01 /* have POSIX file attributes */
+#define RR_FLAG_NM 0x08 /* have alternate file name */
+
+/* POSIX file attributes for Rock Ridge extensions */
+#define POSIX_S_IFMT 0xF000
+#define POSIX_S_IFREG 0x8000
+#define POSIX_S_IFDIR 0x4000
+
+/* volume descriptor types */
+#define ISO_VD_PRIMARY 1
+#define ISO_VD_SUPPLEMENTARY 2
+#define ISO_VD_END 255
+
+#define ISO_STANDARD_ID "CD001"
+
+struct iso_primary_descriptor {
+ char type [ISODCL ( 1, 1)]; /* 711 */
+ char id [ISODCL ( 2, 6)];
+ char version [ISODCL ( 7, 7)]; /* 711 */
+ char unused1 [ISODCL ( 8, 8)];
+ char system_id [ISODCL ( 9, 40)]; /* achars */
+ char volume_id [ISODCL ( 41, 72)]; /* dchars */
+ char unused2 [ISODCL ( 73, 80)];
+ char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
+ char unused3 [ISODCL ( 89, 120)];
+ char volume_set_size [ISODCL (121, 124)]; /* 723 */
+ char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
+ char logical_block_size [ISODCL (129, 132)]; /* 723 */
+ char path_table_size [ISODCL (133, 140)]; /* 733 */
+ char type_l_path_table [ISODCL (141, 144)]; /* 731 */
+ char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
+ char type_m_path_table [ISODCL (149, 152)]; /* 732 */
+ char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
+ char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
+ char volume_set_id [ISODCL (191, 318)]; /* dchars */
+ char publisher_id [ISODCL (319, 446)]; /* achars */
+ char preparer_id [ISODCL (447, 574)]; /* achars */
+ char application_id [ISODCL (575, 702)]; /* achars */
+ char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
+ char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
+ char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
+ char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
+ char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
+ char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
+ char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
+ char file_structure_version [ISODCL (882, 882)]; /* 711 */
+ char unused4 [ISODCL (883, 883)];
+ char application_data [ISODCL (884, 1395)];
+ char unused5 [ISODCL (1396, 2048)];
+};
+
+/* Almost the same as the primary descriptor but two fields are specified */
+struct iso_supplementary_descriptor {
+ char type [ISODCL ( 1, 1)]; /* 711 */
+ char id [ISODCL ( 2, 6)];
+ char version [ISODCL ( 7, 7)]; /* 711 */
+ char flags [ISODCL ( 8, 8)]; /* 853 */
+ char system_id [ISODCL ( 9, 40)]; /* achars */
+ char volume_id [ISODCL ( 41, 72)]; /* dchars */
+ char unused2 [ISODCL ( 73, 80)];
+ char volume_space_size [ISODCL ( 81, 88)]; /* 733 */
+ char escape [ISODCL ( 89, 120)]; /* 856 */
+ char volume_set_size [ISODCL (121, 124)]; /* 723 */
+ char volume_sequence_number [ISODCL (125, 128)]; /* 723 */
+ char logical_block_size [ISODCL (129, 132)]; /* 723 */
+ char path_table_size [ISODCL (133, 140)]; /* 733 */
+ char type_l_path_table [ISODCL (141, 144)]; /* 731 */
+ char opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */
+ char type_m_path_table [ISODCL (149, 152)]; /* 732 */
+ char opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */
+ char root_directory_record [ISODCL (157, 190)]; /* 9.1 */
+ char volume_set_id [ISODCL (191, 318)]; /* dchars */
+ char publisher_id [ISODCL (319, 446)]; /* achars */
+ char preparer_id [ISODCL (447, 574)]; /* achars */
+ char application_id [ISODCL (575, 702)]; /* achars */
+ char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */
+ char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */
+ char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */
+ char creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */
+ char modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */
+ char expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */
+ char effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */
+ char file_structure_version [ISODCL (882, 882)]; /* 711 */
+ char unused4 [ISODCL (883, 883)];
+ char application_data [ISODCL (884, 1395)];
+ char unused5 [ISODCL (1396, 2048)];
+};
+
+
+#define HS_STANDARD_ID "CDROM"
+
+struct hs_volume_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 data[ISODCL(16,2048)];
+};
+
+
+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 */
diff --git a/src/include/fs/vfs.h b/src/include/fs/vfs.h
new file mode 100644
index 0000000000..4040566f65
--- /dev/null
+++ b/src/include/fs/vfs.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 */