mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-04 13:23:26 +01:00
7c0aa811ec
Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
919 lines
21 KiB
C
919 lines
21 KiB
C
/* ufs.c - Unix File System */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2004,2005,2007,2008,2009 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/err.h>
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#include <grub/file.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/disk.h>
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#include <grub/dl.h>
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#include <grub/types.h>
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#include <grub/i18n.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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#ifdef MODE_UFS2
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#define GRUB_UFS_MAGIC 0x19540119
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#else
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#define GRUB_UFS_MAGIC 0x11954
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#endif
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#define GRUB_UFS_INODE 2
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#define GRUB_UFS_FILETYPE_DIR 4
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#define GRUB_UFS_FILETYPE_LNK 10
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#define GRUB_UFS_MAX_SYMLNK_CNT 8
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#define GRUB_UFS_DIRBLKS 12
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#define GRUB_UFS_INDIRBLKS 3
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#define GRUB_UFS_ATTR_TYPE 0160000
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#define GRUB_UFS_ATTR_FILE 0100000
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#define GRUB_UFS_ATTR_DIR 0040000
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#define GRUB_UFS_ATTR_LNK 0120000
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#define GRUB_UFS_VOLNAME_LEN 32
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#ifdef MODE_BIGENDIAN
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#define grub_ufs_to_cpu16 grub_be_to_cpu16
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#define grub_ufs_to_cpu32 grub_be_to_cpu32
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#define grub_ufs_to_cpu64 grub_be_to_cpu64
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#define grub_cpu_to_ufs32_compile_time grub_cpu_to_be32_compile_time
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#else
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#define grub_ufs_to_cpu16 grub_le_to_cpu16
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#define grub_ufs_to_cpu32 grub_le_to_cpu32
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#define grub_ufs_to_cpu64 grub_le_to_cpu64
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#define grub_cpu_to_ufs32_compile_time grub_cpu_to_le32_compile_time
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#endif
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#ifdef MODE_UFS2
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typedef grub_uint64_t grub_ufs_blk_t;
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static inline grub_disk_addr_t
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grub_ufs_to_cpu_blk (grub_ufs_blk_t blk)
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{
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return grub_ufs_to_cpu64 (blk);
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}
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#else
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typedef grub_uint32_t grub_ufs_blk_t;
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static inline grub_disk_addr_t
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grub_ufs_to_cpu_blk (grub_ufs_blk_t blk)
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{
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return grub_ufs_to_cpu32 (blk);
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}
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#endif
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/* Calculate in which group the inode can be found. */
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#define UFS_BLKSZ(sblock) (grub_ufs_to_cpu32 (sblock->bsize))
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#define UFS_LOG_BLKSZ(sblock) (data->log2_blksz)
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#ifdef MODE_UFS2
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#define INODE_ENDIAN(data,field,bits1,bits2) grub_ufs_to_cpu##bits2 (data->inode.field)
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#else
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#define INODE_ENDIAN(data,field,bits1,bits2) grub_ufs_to_cpu##bits1 (data->inode.field)
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#endif
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#define INODE_SIZE(data) grub_ufs_to_cpu64 (data->inode.size)
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#define INODE_MODE(data) grub_ufs_to_cpu16 (data->inode.mode)
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#ifdef MODE_UFS2
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#define LOG_INODE_BLKSZ 3
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#else
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#define LOG_INODE_BLKSZ 2
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#endif
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#ifdef MODE_UFS2
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#define UFS_INODE_PER_BLOCK 2
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#else
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#define UFS_INODE_PER_BLOCK 4
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#endif
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#define INODE_DIRBLOCKS(data,blk) INODE_ENDIAN \
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(data,blocks.dir_blocks[blk],32,64)
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#define INODE_INDIRBLOCKS(data,blk) INODE_ENDIAN \
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(data,blocks.indir_blocks[blk],32,64)
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/* The blocks on which the superblock can be found. */
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static int sblocklist[] = { 128, 16, 0, 512, -1 };
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struct grub_ufs_sblock
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{
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grub_uint8_t unused[16];
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/* The offset of the inodes in the cylinder group. */
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grub_uint32_t inoblk_offs;
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grub_uint8_t unused2[4];
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/* The start of the cylinder group. */
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grub_uint32_t cylg_offset;
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grub_uint32_t cylg_mask;
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grub_uint32_t mtime;
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grub_uint8_t unused4[12];
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/* The size of a block in bytes. */
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grub_int32_t bsize;
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grub_uint8_t unused5[48];
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/* The size of filesystem blocks to disk blocks. */
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grub_uint32_t log2_blksz;
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grub_uint8_t unused6[40];
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grub_uint32_t uuidhi;
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grub_uint32_t uuidlow;
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grub_uint8_t unused7[32];
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/* Inodes stored per cylinder group. */
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grub_uint32_t ino_per_group;
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/* The frags per cylinder group. */
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grub_uint32_t frags_per_group;
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grub_uint8_t unused8[488];
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/* Volume name for UFS2. */
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grub_uint8_t volume_name[GRUB_UFS_VOLNAME_LEN];
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grub_uint8_t unused9[360];
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grub_uint64_t mtime2;
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grub_uint8_t unused10[292];
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/* Magic value to check if this is really a UFS filesystem. */
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grub_uint32_t magic;
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};
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#ifdef MODE_UFS2
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/* UFS inode. */
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struct grub_ufs_inode
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{
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grub_uint16_t mode;
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grub_uint16_t nlinks;
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grub_uint32_t uid;
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grub_uint32_t gid;
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grub_uint32_t blocksize;
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grub_uint64_t size;
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grub_int64_t nblocks;
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grub_uint64_t atime;
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grub_uint64_t mtime;
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grub_uint64_t ctime;
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grub_uint64_t create_time;
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grub_uint32_t atime_usec;
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grub_uint32_t mtime_usec;
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grub_uint32_t ctime_usec;
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grub_uint32_t create_time_sec;
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grub_uint32_t gen;
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grub_uint32_t kernel_flags;
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grub_uint32_t flags;
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grub_uint32_t extsz;
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grub_uint64_t ext[2];
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union
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{
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struct
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{
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grub_uint64_t dir_blocks[GRUB_UFS_DIRBLKS];
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grub_uint64_t indir_blocks[GRUB_UFS_INDIRBLKS];
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} blocks;
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grub_uint8_t symlink[(GRUB_UFS_DIRBLKS + GRUB_UFS_INDIRBLKS) * 8];
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};
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grub_uint8_t unused[24];
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} GRUB_PACKED;
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#else
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/* UFS inode. */
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struct grub_ufs_inode
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{
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grub_uint16_t mode;
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grub_uint16_t nlinks;
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grub_uint16_t uid;
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grub_uint16_t gid;
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grub_uint64_t size;
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grub_uint32_t atime;
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grub_uint32_t atime_usec;
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grub_uint32_t mtime;
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grub_uint32_t mtime_usec;
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grub_uint32_t ctime;
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grub_uint32_t ctime_usec;
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union
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{
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struct
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{
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grub_uint32_t dir_blocks[GRUB_UFS_DIRBLKS];
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grub_uint32_t indir_blocks[GRUB_UFS_INDIRBLKS];
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} blocks;
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grub_uint8_t symlink[(GRUB_UFS_DIRBLKS + GRUB_UFS_INDIRBLKS) * 4];
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};
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grub_uint32_t flags;
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grub_uint32_t nblocks;
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grub_uint32_t gen;
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grub_uint32_t unused;
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grub_uint8_t pad[12];
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} GRUB_PACKED;
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#endif
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/* Directory entry. */
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struct grub_ufs_dirent
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{
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grub_uint32_t ino;
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grub_uint16_t direntlen;
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union
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{
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grub_uint16_t namelen;
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struct
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{
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grub_uint8_t filetype_bsd;
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grub_uint8_t namelen_bsd;
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};
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};
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} GRUB_PACKED;
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/* Information about a "mounted" ufs filesystem. */
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struct grub_ufs_data
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{
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struct grub_ufs_sblock sblock;
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grub_disk_t disk;
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struct grub_ufs_inode inode;
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int ino;
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int linknest;
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int log2_blksz;
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};
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static grub_dl_t my_mod;
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/* Forward declaration. */
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static grub_err_t grub_ufs_find_file (struct grub_ufs_data *data,
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const char *path);
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static grub_disk_addr_t
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grub_ufs_get_file_block (struct grub_ufs_data *data, grub_disk_addr_t blk)
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{
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unsigned long indirsz;
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int log2_blksz, log_indirsz;
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/* Direct. */
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if (blk < GRUB_UFS_DIRBLKS)
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return INODE_DIRBLOCKS (data, blk);
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log2_blksz = grub_ufs_to_cpu32 (data->sblock.log2_blksz);
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blk -= GRUB_UFS_DIRBLKS;
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log_indirsz = data->log2_blksz - LOG_INODE_BLKSZ;
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indirsz = 1 << log_indirsz;
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/* Single indirect block. */
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if (blk < indirsz)
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{
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grub_ufs_blk_t indir;
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grub_disk_read (data->disk,
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((grub_disk_addr_t) INODE_INDIRBLOCKS (data, 0))
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<< log2_blksz,
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blk * sizeof (indir), sizeof (indir), &indir);
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return indir;
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}
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blk -= indirsz;
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/* Double indirect block. */
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if (blk < (grub_disk_addr_t) indirsz * (grub_disk_addr_t) indirsz)
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{
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grub_ufs_blk_t indir;
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grub_disk_read (data->disk,
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((grub_disk_addr_t) INODE_INDIRBLOCKS (data, 1))
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<< log2_blksz,
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(blk >> log_indirsz) * sizeof (indir),
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sizeof (indir), &indir);
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grub_disk_read (data->disk,
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grub_ufs_to_cpu_blk (indir) << log2_blksz,
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(blk & ((1 << log_indirsz) - 1)) * sizeof (indir),
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sizeof (indir), &indir);
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return indir;
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}
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blk -= (grub_disk_addr_t) indirsz * (grub_disk_addr_t) indirsz;
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/* Triple indirect block. */
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if (!(blk >> (3 * log_indirsz)))
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{
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grub_ufs_blk_t indir;
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grub_disk_read (data->disk,
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((grub_disk_addr_t) INODE_INDIRBLOCKS (data, 2))
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<< log2_blksz,
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(blk >> (2 * log_indirsz)) * sizeof (indir),
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sizeof (indir), &indir);
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grub_disk_read (data->disk,
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grub_ufs_to_cpu_blk (indir) << log2_blksz,
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((blk >> log_indirsz)
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& ((1 << log_indirsz) - 1)) * sizeof (indir),
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sizeof (indir), &indir);
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grub_disk_read (data->disk,
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grub_ufs_to_cpu_blk (indir) << log2_blksz,
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(blk & ((1 << log_indirsz) - 1)) * sizeof (indir),
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sizeof (indir), &indir);
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return indir;
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}
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grub_error (GRUB_ERR_BAD_FS,
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"ufs does not support quadruple indirect blocks");
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return 0;
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}
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/* Read LEN bytes from the file described by DATA starting with byte
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POS. Return the amount of read bytes in READ. */
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static grub_ssize_t
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grub_ufs_read_file (struct grub_ufs_data *data,
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grub_disk_read_hook_t read_hook, void *read_hook_data,
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grub_off_t pos, grub_size_t len, char *buf)
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{
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struct grub_ufs_sblock *sblock = &data->sblock;
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grub_off_t i;
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grub_off_t blockcnt;
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/* Adjust len so it we can't read past the end of the file. */
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if (len + pos > INODE_SIZE (data))
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len = INODE_SIZE (data) - pos;
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blockcnt = (len + pos + UFS_BLKSZ (sblock) - 1) >> UFS_LOG_BLKSZ (sblock);
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for (i = pos >> UFS_LOG_BLKSZ (sblock); i < blockcnt; i++)
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{
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grub_disk_addr_t blknr;
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grub_off_t blockoff;
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grub_off_t blockend = UFS_BLKSZ (sblock);
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int skipfirst = 0;
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blockoff = pos & (UFS_BLKSZ (sblock) - 1);
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blknr = grub_ufs_get_file_block (data, i);
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if (grub_errno)
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return -1;
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/* Last block. */
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if (i == blockcnt - 1)
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{
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blockend = (len + pos) & (UFS_BLKSZ (sblock) - 1);
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if (!blockend)
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blockend = UFS_BLKSZ (sblock);
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}
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/* First block. */
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if (i == (pos >> UFS_LOG_BLKSZ (sblock)))
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{
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skipfirst = blockoff;
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blockend -= skipfirst;
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}
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/* XXX: If the block number is 0 this block is not stored on
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disk but is zero filled instead. */
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if (blknr)
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{
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data->disk->read_hook = read_hook;
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data->disk->read_hook_data = read_hook_data;
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grub_disk_read (data->disk,
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blknr << grub_ufs_to_cpu32 (data->sblock.log2_blksz),
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skipfirst, blockend, buf);
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data->disk->read_hook = 0;
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if (grub_errno)
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return -1;
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}
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else
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grub_memset (buf, UFS_BLKSZ (sblock) - skipfirst, 0);
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buf += UFS_BLKSZ (sblock) - skipfirst;
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}
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return len;
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}
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/* Read inode INO from the mounted filesystem described by DATA. This
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inode is used by default now. */
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static grub_err_t
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grub_ufs_read_inode (struct grub_ufs_data *data, int ino, char *inode)
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{
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struct grub_ufs_sblock *sblock = &data->sblock;
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/* Determine the group the inode is in. */
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int group = ino / grub_ufs_to_cpu32 (sblock->ino_per_group);
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/* Determine the inode within the group. */
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int grpino = ino % grub_ufs_to_cpu32 (sblock->ino_per_group);
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/* The first block of the group. */
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int grpblk = group * (grub_ufs_to_cpu32 (sblock->frags_per_group));
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#ifndef MODE_UFS2
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grpblk += grub_ufs_to_cpu32 (sblock->cylg_offset)
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* (group & (~grub_ufs_to_cpu32 (sblock->cylg_mask)));
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#endif
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if (!inode)
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{
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inode = (char *) &data->inode;
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data->ino = ino;
|
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}
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grub_disk_read (data->disk,
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((grub_ufs_to_cpu32 (sblock->inoblk_offs) + grpblk)
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<< grub_ufs_to_cpu32 (data->sblock.log2_blksz))
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+ grpino / UFS_INODE_PER_BLOCK,
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(grpino % UFS_INODE_PER_BLOCK)
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* sizeof (struct grub_ufs_inode),
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sizeof (struct grub_ufs_inode),
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inode);
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return grub_errno;
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}
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/* Lookup the symlink the current inode points to. INO is the inode
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number of the directory the symlink is relative to. */
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static grub_err_t
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grub_ufs_lookup_symlink (struct grub_ufs_data *data, int ino)
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{
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char *symlink;
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grub_size_t sz = INODE_SIZE (data);
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if (++data->linknest > GRUB_UFS_MAX_SYMLNK_CNT)
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return grub_error (GRUB_ERR_SYMLINK_LOOP, N_("too deep nesting of symlinks"));
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symlink = grub_malloc (sz + 1);
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if (!symlink)
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return grub_errno;
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/* Normally we should just check that data->inode.nblocks == 0.
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However old Linux doesn't maintain nblocks correctly and so it's always
|
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0. If size is bigger than inline space then the symlink is surely not
|
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inline. */
|
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/* Check against zero is paylindromic, no need to swap. */
|
||
if (data->inode.nblocks == 0
|
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&& INODE_SIZE (data) <= sizeof (data->inode.symlink))
|
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grub_strcpy (symlink, (char *) data->inode.symlink);
|
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else
|
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{
|
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if (grub_ufs_read_file (data, 0, 0, 0, sz, symlink) < 0)
|
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{
|
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grub_free(symlink);
|
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return grub_errno;
|
||
}
|
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}
|
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symlink[sz] = '\0';
|
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|
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/* The symlink is an absolute path, go back to the root inode. */
|
||
if (symlink[0] == '/')
|
||
ino = GRUB_UFS_INODE;
|
||
|
||
/* Now load in the old inode. */
|
||
if (grub_ufs_read_inode (data, ino, 0))
|
||
{
|
||
grub_free (symlink);
|
||
return grub_errno;
|
||
}
|
||
|
||
grub_ufs_find_file (data, symlink);
|
||
|
||
grub_free (symlink);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
/* Find the file with the pathname PATH on the filesystem described by
|
||
DATA. */
|
||
static grub_err_t
|
||
grub_ufs_find_file (struct grub_ufs_data *data, const char *path)
|
||
{
|
||
const char *name;
|
||
const char *next = path;
|
||
unsigned int pos = 0;
|
||
int dirino;
|
||
char *filename;
|
||
|
||
/* We reject filenames longer than the one we're looking
|
||
for without reading, so this allocation is enough. */
|
||
filename = grub_malloc (grub_strlen (path) + 2);
|
||
if (!filename)
|
||
return grub_errno;
|
||
|
||
while (1)
|
||
{
|
||
struct grub_ufs_dirent dirent;
|
||
|
||
name = next;
|
||
/* Skip the first slash. */
|
||
while (*name == '/')
|
||
name++;
|
||
if (*name == 0)
|
||
{
|
||
grub_free (filename);
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
if ((INODE_MODE(data) & GRUB_UFS_ATTR_TYPE)
|
||
!= GRUB_UFS_ATTR_DIR)
|
||
{
|
||
grub_error (GRUB_ERR_BAD_FILE_TYPE,
|
||
N_("not a directory"));
|
||
goto fail;
|
||
}
|
||
|
||
/* Extract the actual part from the pathname. */
|
||
for (next = name; *next && *next != '/'; next++);
|
||
for (pos = 0; ; pos += grub_ufs_to_cpu16 (dirent.direntlen))
|
||
{
|
||
int namelen;
|
||
|
||
if (pos >= INODE_SIZE (data))
|
||
{
|
||
grub_error (GRUB_ERR_FILE_NOT_FOUND,
|
||
N_("file `%s' not found"),
|
||
path);
|
||
goto fail;
|
||
}
|
||
|
||
if (grub_ufs_read_file (data, 0, 0, pos, sizeof (dirent),
|
||
(char *) &dirent) < 0)
|
||
goto fail;
|
||
|
||
#ifdef MODE_UFS2
|
||
namelen = dirent.namelen_bsd;
|
||
#else
|
||
namelen = grub_ufs_to_cpu16 (dirent.namelen);
|
||
#endif
|
||
if (namelen < next - name)
|
||
continue;
|
||
|
||
if (grub_ufs_read_file (data, 0, 0, pos + sizeof (dirent),
|
||
next - name + (namelen != next - name),
|
||
filename) < 0)
|
||
goto fail;
|
||
|
||
if (grub_strncmp (name, filename, next - name) == 0
|
||
&& (namelen == next - name || filename[next - name] == '\0'))
|
||
{
|
||
dirino = data->ino;
|
||
grub_ufs_read_inode (data, grub_ufs_to_cpu32 (dirent.ino), 0);
|
||
|
||
if ((INODE_MODE(data) & GRUB_UFS_ATTR_TYPE)
|
||
== GRUB_UFS_ATTR_LNK)
|
||
{
|
||
grub_ufs_lookup_symlink (data, dirino);
|
||
if (grub_errno)
|
||
goto fail;
|
||
}
|
||
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
fail:
|
||
grub_free (filename);
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
/* Mount the filesystem on the disk DISK. */
|
||
static struct grub_ufs_data *
|
||
grub_ufs_mount (grub_disk_t disk)
|
||
{
|
||
struct grub_ufs_data *data;
|
||
int *sblklist = sblocklist;
|
||
|
||
data = grub_malloc (sizeof (struct grub_ufs_data));
|
||
if (!data)
|
||
return 0;
|
||
|
||
/* Find a UFS sblock. */
|
||
while (*sblklist != -1)
|
||
{
|
||
grub_disk_read (disk, *sblklist, 0, sizeof (struct grub_ufs_sblock),
|
||
&data->sblock);
|
||
if (grub_errno)
|
||
goto fail;
|
||
|
||
/* No need to byteswap bsize in this check. It works the same on both
|
||
endiannesses. */
|
||
if (data->sblock.magic == grub_cpu_to_ufs32_compile_time (GRUB_UFS_MAGIC)
|
||
&& data->sblock.bsize != 0
|
||
&& ((data->sblock.bsize & (data->sblock.bsize - 1)) == 0)
|
||
&& data->sblock.ino_per_group != 0)
|
||
{
|
||
for (data->log2_blksz = 0;
|
||
(1U << data->log2_blksz) < grub_ufs_to_cpu32 (data->sblock.bsize);
|
||
data->log2_blksz++);
|
||
|
||
data->disk = disk;
|
||
data->linknest = 0;
|
||
return data;
|
||
}
|
||
sblklist++;
|
||
}
|
||
|
||
fail:
|
||
|
||
if (grub_errno == GRUB_ERR_NONE || grub_errno == GRUB_ERR_OUT_OF_RANGE)
|
||
{
|
||
#ifdef MODE_UFS2
|
||
grub_error (GRUB_ERR_BAD_FS, "not an ufs2 filesystem");
|
||
#else
|
||
grub_error (GRUB_ERR_BAD_FS, "not an ufs1 filesystem");
|
||
#endif
|
||
}
|
||
|
||
grub_free (data);
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
static grub_err_t
|
||
grub_ufs_dir (grub_device_t device, const char *path,
|
||
grub_fs_dir_hook_t hook, void *hook_data)
|
||
{
|
||
struct grub_ufs_data *data;
|
||
unsigned int pos = 0;
|
||
|
||
data = grub_ufs_mount (device->disk);
|
||
if (!data)
|
||
return grub_errno;
|
||
|
||
grub_ufs_read_inode (data, GRUB_UFS_INODE, 0);
|
||
if (grub_errno)
|
||
return grub_errno;
|
||
|
||
if (!path || path[0] != '/')
|
||
{
|
||
grub_error (GRUB_ERR_BAD_FILENAME, N_("invalid file name `%s'"), path);
|
||
return grub_errno;
|
||
}
|
||
|
||
grub_ufs_find_file (data, path);
|
||
if (grub_errno)
|
||
goto fail;
|
||
|
||
if ((INODE_MODE (data) & GRUB_UFS_ATTR_TYPE) != GRUB_UFS_ATTR_DIR)
|
||
{
|
||
grub_error (GRUB_ERR_BAD_FILE_TYPE, N_("not a directory"));
|
||
goto fail;
|
||
}
|
||
|
||
while (pos < INODE_SIZE (data))
|
||
{
|
||
struct grub_ufs_dirent dirent;
|
||
int namelen;
|
||
|
||
if (grub_ufs_read_file (data, 0, 0, pos, sizeof (dirent),
|
||
(char *) &dirent) < 0)
|
||
break;
|
||
|
||
if (dirent.direntlen == 0)
|
||
break;
|
||
|
||
#ifdef MODE_UFS2
|
||
namelen = dirent.namelen_bsd;
|
||
#else
|
||
namelen = grub_ufs_to_cpu16 (dirent.namelen);
|
||
#endif
|
||
|
||
char *filename = grub_malloc (namelen + 1);
|
||
if (!filename)
|
||
goto fail;
|
||
struct grub_dirhook_info info;
|
||
struct grub_ufs_inode inode;
|
||
|
||
grub_memset (&info, 0, sizeof (info));
|
||
|
||
if (grub_ufs_read_file (data, 0, 0, pos + sizeof (dirent),
|
||
namelen, filename) < 0)
|
||
{
|
||
grub_free (filename);
|
||
break;
|
||
}
|
||
|
||
filename[namelen] = '\0';
|
||
grub_ufs_read_inode (data, grub_ufs_to_cpu32 (dirent.ino),
|
||
(char *) &inode);
|
||
|
||
info.dir = ((grub_ufs_to_cpu16 (inode.mode) & GRUB_UFS_ATTR_TYPE)
|
||
== GRUB_UFS_ATTR_DIR);
|
||
#ifdef MODE_UFS2
|
||
info.mtime = grub_ufs_to_cpu64 (inode.mtime);
|
||
#else
|
||
info.mtime = grub_ufs_to_cpu32 (inode.mtime);
|
||
#endif
|
||
info.mtimeset = 1;
|
||
|
||
if (hook (filename, &info, hook_data))
|
||
{
|
||
grub_free (filename);
|
||
break;
|
||
}
|
||
|
||
grub_free (filename);
|
||
|
||
pos += grub_ufs_to_cpu16 (dirent.direntlen);
|
||
}
|
||
|
||
fail:
|
||
grub_free (data);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
/* Open a file named NAME and initialize FILE. */
|
||
static grub_err_t
|
||
grub_ufs_open (struct grub_file *file, const char *name)
|
||
{
|
||
struct grub_ufs_data *data;
|
||
data = grub_ufs_mount (file->device->disk);
|
||
if (!data)
|
||
return grub_errno;
|
||
|
||
grub_ufs_read_inode (data, 2, 0);
|
||
if (grub_errno)
|
||
{
|
||
grub_free (data);
|
||
return grub_errno;
|
||
}
|
||
|
||
if (!name || name[0] != '/')
|
||
{
|
||
grub_error (GRUB_ERR_BAD_FILENAME, N_("invalid file name `%s'"), name);
|
||
return grub_errno;
|
||
}
|
||
|
||
grub_ufs_find_file (data, name);
|
||
if (grub_errno)
|
||
{
|
||
grub_free (data);
|
||
return grub_errno;
|
||
}
|
||
|
||
file->data = data;
|
||
file->size = INODE_SIZE (data);
|
||
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
|
||
static grub_ssize_t
|
||
grub_ufs_read (grub_file_t file, char *buf, grub_size_t len)
|
||
{
|
||
struct grub_ufs_data *data =
|
||
(struct grub_ufs_data *) file->data;
|
||
|
||
return grub_ufs_read_file (data, file->read_hook, file->read_hook_data,
|
||
file->offset, len, buf);
|
||
}
|
||
|
||
|
||
static grub_err_t
|
||
grub_ufs_close (grub_file_t file)
|
||
{
|
||
grub_free (file->data);
|
||
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
static grub_err_t
|
||
grub_ufs_label (grub_device_t device, char **label)
|
||
{
|
||
struct grub_ufs_data *data = 0;
|
||
|
||
grub_dl_ref (my_mod);
|
||
|
||
*label = 0;
|
||
|
||
data = grub_ufs_mount (device->disk);
|
||
if (data)
|
||
*label = grub_strdup ((char *) data->sblock.volume_name);
|
||
|
||
grub_dl_unref (my_mod);
|
||
|
||
grub_free (data);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
static grub_err_t
|
||
grub_ufs_uuid (grub_device_t device, char **uuid)
|
||
{
|
||
struct grub_ufs_data *data;
|
||
grub_disk_t disk = device->disk;
|
||
|
||
grub_dl_ref (my_mod);
|
||
|
||
data = grub_ufs_mount (disk);
|
||
if (data && (data->sblock.uuidhi != 0 || data->sblock.uuidlow != 0))
|
||
*uuid = grub_xasprintf ("%08x%08x",
|
||
(unsigned) grub_ufs_to_cpu32 (data->sblock.uuidhi),
|
||
(unsigned) grub_ufs_to_cpu32 (data->sblock.uuidlow));
|
||
else
|
||
*uuid = NULL;
|
||
|
||
grub_dl_unref (my_mod);
|
||
|
||
grub_free (data);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
/* Get mtime. */
|
||
static grub_err_t
|
||
grub_ufs_mtime (grub_device_t device, grub_int32_t *tm)
|
||
{
|
||
struct grub_ufs_data *data = 0;
|
||
|
||
grub_dl_ref (my_mod);
|
||
|
||
data = grub_ufs_mount (device->disk);
|
||
if (!data)
|
||
*tm = 0;
|
||
else
|
||
{
|
||
*tm = grub_ufs_to_cpu32 (data->sblock.mtime);
|
||
#ifdef MODE_UFS2
|
||
if (*tm < (grub_int64_t) grub_ufs_to_cpu64 (data->sblock.mtime2))
|
||
*tm = grub_ufs_to_cpu64 (data->sblock.mtime2);
|
||
#endif
|
||
}
|
||
|
||
grub_dl_unref (my_mod);
|
||
|
||
grub_free (data);
|
||
|
||
return grub_errno;
|
||
}
|
||
|
||
|
||
|
||
static struct grub_fs grub_ufs_fs =
|
||
{
|
||
#ifdef MODE_UFS2
|
||
.name = "ufs2",
|
||
#else
|
||
#ifdef MODE_BIGENDIAN
|
||
.name = "ufs1_be",
|
||
#else
|
||
.name = "ufs1",
|
||
#endif
|
||
#endif
|
||
.dir = grub_ufs_dir,
|
||
.open = grub_ufs_open,
|
||
.read = grub_ufs_read,
|
||
.close = grub_ufs_close,
|
||
.label = grub_ufs_label,
|
||
.uuid = grub_ufs_uuid,
|
||
.mtime = grub_ufs_mtime,
|
||
/* FIXME: set reserved_first_sector. */
|
||
#ifdef GRUB_UTIL
|
||
.blocklist_install = 1,
|
||
#endif
|
||
.next = 0
|
||
};
|
||
|
||
#ifdef MODE_UFS2
|
||
GRUB_MOD_INIT(ufs2)
|
||
#else
|
||
#ifdef MODE_BIGENDIAN
|
||
GRUB_MOD_INIT(ufs1_be)
|
||
#else
|
||
GRUB_MOD_INIT(ufs1)
|
||
#endif
|
||
#endif
|
||
{
|
||
grub_fs_register (&grub_ufs_fs);
|
||
my_mod = mod;
|
||
}
|
||
|
||
#ifdef MODE_UFS2
|
||
GRUB_MOD_FINI(ufs2)
|
||
#else
|
||
#ifdef MODE_BIGENDIAN
|
||
GRUB_MOD_FINI(ufs1_be)
|
||
#else
|
||
GRUB_MOD_FINI(ufs1)
|
||
#endif
|
||
#endif
|
||
{
|
||
grub_fs_unregister (&grub_ufs_fs);
|
||
}
|
||
|