2N/A/* ufs.c - Unix File System */
2N/A/*
2N/A * GRUB -- GRand Unified Bootloader
2N/A * Copyright (C) 2004,2005,2007,2008,2009 Free Software Foundation, Inc.
2N/A * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
2N/A *
2N/A * GRUB is free software: you can redistribute it and/or modify
2N/A * it under the terms of the GNU General Public License as published by
2N/A * the Free Software Foundation, either version 3 of the License, or
2N/A * (at your option) any later version.
2N/A *
2N/A * GRUB is distributed in the hope that it will be useful,
2N/A * but WITHOUT ANY WARRANTY; without even the implied warranty of
2N/A * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
2N/A * GNU General Public License for more details.
2N/A *
2N/A * You should have received a copy of the GNU General Public License
2N/A * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
2N/A */
2N/A
2N/A#include <grub/err.h>
2N/A#include <grub/file.h>
2N/A#include <grub/mm.h>
2N/A#include <grub/misc.h>
2N/A#include <grub/disk.h>
2N/A#include <grub/dl.h>
2N/A#include <grub/types.h>
2N/A
2N/AGRUB_MOD_LICENSE ("GPLv3+");
2N/A
2N/A#ifdef MODE_UFS2
2N/A#define GRUB_UFS_MAGIC 0x19540119
2N/A#else
2N/A#define GRUB_UFS_MAGIC 0x11954
2N/A#endif
2N/A
2N/A#define GRUB_UFS_INODE 2
2N/A#define GRUB_UFS_FILETYPE_DIR 4
2N/A#define GRUB_UFS_FILETYPE_LNK 10
2N/A#define GRUB_UFS_MAX_SYMLNK_CNT 8
2N/A
2N/A#define GRUB_UFS_DIRBLKS 12
2N/A#define GRUB_UFS_INDIRBLKS 3
2N/A
2N/A#define GRUB_UFS_ATTR_TYPE 0160000
2N/A#define GRUB_UFS_ATTR_FILE 0100000
2N/A#define GRUB_UFS_ATTR_DIR 0040000
2N/A#define GRUB_UFS_ATTR_LNK 0120000
2N/A
2N/A#define GRUB_UFS_VOLNAME_LEN 32
2N/A
2N/A/* Calculate in which group the inode can be found. */
2N/A#define UFS_BLKSZ(sblock) (grub_le_to_cpu32 (sblock->bsize))
2N/A#define UFS_LOG_BLKSZ(sblock) (data->log2_blksz)
2N/A
2N/A#define INODE(data,field) data->inode. field
2N/A#ifdef MODE_UFS2
2N/A#define INODE_ENDIAN(data,field,bits1,bits2) grub_le_to_cpu##bits2 (data->inode.field)
2N/A#else
2N/A#define INODE_ENDIAN(data,field,bits1,bits2) grub_le_to_cpu##bits1 (data->inode.field)
2N/A#endif
2N/A
2N/A#define INODE_SIZE(data) INODE_ENDIAN (data,size,32,64)
2N/A#define INODE_NBLOCKS(data) INODE_ENDIAN (data,nblocks,32,64)
2N/A
2N/A#define INODE_MODE(data) INODE_ENDIAN (data,mode,16,16)
2N/A#ifdef MODE_UFS2
2N/A#define INODE_BLKSZ 8
2N/A#else
2N/A#define INODE_BLKSZ 4
2N/A#endif
2N/A#ifdef MODE_UFS2
2N/A#define UFS_INODE_PER_BLOCK 2
2N/A#else
2N/A#define UFS_INODE_PER_BLOCK 4
2N/A#endif
2N/A#define INODE_DIRBLOCKS(data,blk) INODE_ENDIAN \
2N/A (data,blocks.dir_blocks[blk],32,64)
2N/A#define INODE_INDIRBLOCKS(data,blk) INODE_ENDIAN \
2N/A (data,blocks.indir_blocks[blk],32,64)
2N/A
2N/A/* The blocks on which the superblock can be found. */
2N/Astatic int sblocklist[] = { 128, 16, 0, 512, -1 };
2N/A
2N/Astruct grub_ufs_sblock
2N/A{
2N/A grub_uint8_t unused[16];
2N/A /* The offset of the inodes in the cylinder group. */
2N/A grub_uint32_t inoblk_offs;
2N/A
2N/A grub_uint8_t unused2[4];
2N/A
2N/A /* The start of the cylinder group. */
2N/A grub_uint32_t cylg_offset;
2N/A grub_uint32_t cylg_mask;
2N/A
2N/A grub_uint32_t mtime;
2N/A grub_uint8_t unused4[12];
2N/A
2N/A /* The size of a block in bytes. */
2N/A grub_int32_t bsize;
2N/A grub_uint8_t unused5[48];
2N/A
2N/A /* The size of filesystem blocks to disk blocks. */
2N/A grub_uint32_t log2_blksz;
2N/A grub_uint8_t unused6[40];
2N/A grub_uint32_t uuidhi;
2N/A grub_uint32_t uuidlow;
2N/A grub_uint8_t unused7[32];
2N/A
2N/A /* Inodes stored per cylinder group. */
2N/A grub_uint32_t ino_per_group;
2N/A
2N/A /* The frags per cylinder group. */
2N/A grub_uint32_t frags_per_group;
2N/A
2N/A grub_uint8_t unused8[488];
2N/A
2N/A /* Volume name for UFS2. */
2N/A grub_uint8_t volume_name[GRUB_UFS_VOLNAME_LEN];
2N/A grub_uint8_t unused9[360];
2N/A
2N/A grub_uint64_t mtime2;
2N/A grub_uint8_t unused10[292];
2N/A
2N/A /* Magic value to check if this is really a UFS filesystem. */
2N/A grub_uint32_t magic;
2N/A};
2N/A
2N/A#ifdef MODE_UFS2
2N/A/* UFS inode. */
2N/Astruct grub_ufs_inode
2N/A{
2N/A grub_uint16_t mode;
2N/A grub_uint16_t nlinks;
2N/A grub_uint32_t uid;
2N/A grub_uint32_t gid;
2N/A grub_uint32_t blocksize;
2N/A grub_int64_t size;
2N/A grub_int64_t nblocks;
2N/A grub_uint64_t atime;
2N/A grub_uint64_t mtime;
2N/A grub_uint64_t ctime;
2N/A grub_uint64_t create_time;
2N/A grub_uint32_t atime_sec;
2N/A grub_uint32_t mtime_sec;
2N/A grub_uint32_t ctime_sec;
2N/A grub_uint32_t create_time_sec;
2N/A grub_uint32_t gen;
2N/A grub_uint32_t kernel_flags;
2N/A grub_uint32_t flags;
2N/A grub_uint32_t extsz;
2N/A grub_uint64_t ext[2];
2N/A union
2N/A {
2N/A struct
2N/A {
2N/A grub_uint64_t dir_blocks[GRUB_UFS_DIRBLKS];
2N/A grub_uint64_t indir_blocks[GRUB_UFS_INDIRBLKS];
2N/A } blocks;
2N/A grub_uint8_t symlink[(GRUB_UFS_DIRBLKS + GRUB_UFS_INDIRBLKS) * 8];
2N/A };
2N/A
2N/A grub_uint8_t unused[24];
2N/A} __attribute__ ((packed));
2N/A#else
2N/A/* UFS inode. */
2N/Astruct grub_ufs_inode
2N/A{
2N/A grub_uint16_t mode;
2N/A grub_uint16_t nlinks;
2N/A grub_uint16_t uid;
2N/A grub_uint16_t gid;
2N/A grub_int64_t size;
2N/A grub_uint64_t atime;
2N/A grub_uint64_t mtime;
2N/A grub_uint64_t ctime;
2N/A union
2N/A {
2N/A struct
2N/A {
2N/A grub_uint32_t dir_blocks[GRUB_UFS_DIRBLKS];
2N/A grub_uint32_t indir_blocks[GRUB_UFS_INDIRBLKS];
2N/A } blocks;
2N/A grub_uint8_t symlink[(GRUB_UFS_DIRBLKS + GRUB_UFS_INDIRBLKS) * 4];
2N/A };
2N/A grub_uint32_t flags;
2N/A grub_uint32_t nblocks;
2N/A grub_uint32_t gen;
2N/A grub_uint32_t unused;
2N/A grub_uint8_t pad[12];
2N/A} __attribute__ ((packed));
2N/A#endif
2N/A
2N/A/* Directory entry. */
2N/Astruct grub_ufs_dirent
2N/A{
2N/A grub_uint32_t ino;
2N/A grub_uint16_t direntlen;
2N/A union
2N/A {
2N/A grub_uint16_t namelen;
2N/A struct
2N/A {
2N/A grub_uint8_t filetype_bsd;
2N/A grub_uint8_t namelen_bsd;
2N/A };
2N/A };
2N/A} __attribute__ ((packed));
2N/A
2N/A/* Information about a "mounted" ufs filesystem. */
2N/Astruct grub_ufs_data
2N/A{
2N/A struct grub_ufs_sblock sblock;
2N/A grub_disk_t disk;
2N/A struct grub_ufs_inode inode;
2N/A int ino;
2N/A int linknest;
2N/A int log2_blksz;
2N/A};
2N/A
2N/Astatic grub_dl_t my_mod;
2N/A
2N/A/* Forward declaration. */
2N/Astatic grub_err_t grub_ufs_find_file (struct grub_ufs_data *data,
2N/A const char *path);
2N/A
2N/A
2N/Astatic grub_disk_addr_t
2N/Agrub_ufs_get_file_block (struct grub_ufs_data *data, unsigned int blk)
2N/A{
2N/A struct grub_ufs_sblock *sblock = &data->sblock;
2N/A unsigned int indirsz;
2N/A int log2_blksz;
2N/A
2N/A /* Direct. */
2N/A if (blk < GRUB_UFS_DIRBLKS)
2N/A return INODE_DIRBLOCKS (data, blk);
2N/A
2N/A log2_blksz = grub_le_to_cpu32 (data->sblock.log2_blksz);
2N/A
2N/A blk -= GRUB_UFS_DIRBLKS;
2N/A
2N/A indirsz = UFS_BLKSZ (sblock) / INODE_BLKSZ;
2N/A /* Single indirect block. */
2N/A if (blk < indirsz)
2N/A {
2N/A#ifdef MODE_UFS2
2N/A grub_uint64_t indir[UFS_BLKSZ (sblock) / sizeof (grub_uint64_t)];
2N/A#else
2N/A grub_uint32_t indir[UFS_BLKSZ (sblock) / sizeof (grub_uint32_t)];
2N/A#endif
2N/A grub_disk_read (data->disk, INODE_INDIRBLOCKS (data, 0) << log2_blksz,
2N/A 0, sizeof (indir), indir);
2N/A return indir[blk];
2N/A }
2N/A blk -= indirsz;
2N/A
2N/A /* Double indirect block. */
2N/A if (blk < indirsz * indirsz)
2N/A {
2N/A#ifdef MODE_UFS2
2N/A grub_uint64_t indir[UFS_BLKSZ (sblock) / sizeof (grub_uint64_t)];
2N/A#else
2N/A grub_uint32_t indir[UFS_BLKSZ (sblock) / sizeof (grub_uint32_t)];
2N/A#endif
2N/A
2N/A grub_disk_read (data->disk, INODE_INDIRBLOCKS (data, 1) << log2_blksz,
2N/A 0, sizeof (indir), indir);
2N/A grub_disk_read (data->disk,
2N/A (indir [blk / indirsz])
2N/A << log2_blksz,
2N/A 0, sizeof (indir), indir);
2N/A
2N/A return indir[blk % indirsz];
2N/A }
2N/A
2N/A
2N/A grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET,
2N/A "ufs does not support triple indirect blocks");
2N/A return 0;
2N/A}
2N/A
2N/A
2N/A/* Read LEN bytes from the file described by DATA starting with byte
2N/A POS. Return the amount of read bytes in READ. */
2N/Astatic grub_ssize_t
2N/Agrub_ufs_read_file (struct grub_ufs_data *data,
2N/A void NESTED_FUNC_ATTR (*read_hook) (grub_disk_addr_t sector,
2N/A unsigned offset, unsigned length),
2N/A grub_off_t pos, grub_size_t len, char *buf)
2N/A{
2N/A struct grub_ufs_sblock *sblock = &data->sblock;
2N/A grub_off_t i;
2N/A grub_off_t blockcnt;
2N/A
2N/A /* Adjust len so it we can't read past the end of the file. */
2N/A if (len + pos > INODE_SIZE (data))
2N/A len = INODE_SIZE (data) - pos;
2N/A
2N/A blockcnt = (len + pos + UFS_BLKSZ (sblock) - 1) >> UFS_LOG_BLKSZ (sblock);
2N/A
2N/A for (i = pos >> UFS_LOG_BLKSZ (sblock); i < blockcnt; i++)
2N/A {
2N/A grub_disk_addr_t blknr;
2N/A grub_off_t blockoff;
2N/A grub_off_t blockend = UFS_BLKSZ (sblock);
2N/A
2N/A int skipfirst = 0;
2N/A
2N/A blockoff = pos & (UFS_BLKSZ (sblock) - 1);
2N/A
2N/A blknr = grub_ufs_get_file_block (data, i);
2N/A if (grub_errno)
2N/A return -1;
2N/A
2N/A /* Last block. */
2N/A if (i == blockcnt - 1)
2N/A {
2N/A blockend = (len + pos) & (UFS_BLKSZ (sblock) - 1);
2N/A
2N/A if (!blockend)
2N/A blockend = UFS_BLKSZ (sblock);
2N/A }
2N/A
2N/A /* First block. */
2N/A if (i == (pos >> UFS_LOG_BLKSZ (sblock)))
2N/A {
2N/A skipfirst = blockoff;
2N/A blockend -= skipfirst;
2N/A }
2N/A
2N/A /* XXX: If the block number is 0 this block is not stored on
2N/A disk but is zero filled instead. */
2N/A if (blknr)
2N/A {
2N/A data->disk->read_hook = read_hook;
2N/A grub_disk_read (data->disk,
2N/A blknr << grub_le_to_cpu32 (data->sblock.log2_blksz),
2N/A skipfirst, blockend, buf);
2N/A data->disk->read_hook = 0;
2N/A if (grub_errno)
2N/A return -1;
2N/A }
2N/A else
2N/A grub_memset (buf, UFS_BLKSZ (sblock) - skipfirst, 0);
2N/A
2N/A buf += UFS_BLKSZ (sblock) - skipfirst;
2N/A }
2N/A
2N/A return len;
2N/A}
2N/A
2N/A/* Read inode INO from the mounted filesystem described by DATA. This
2N/A inode is used by default now. */
2N/Astatic grub_err_t
2N/Agrub_ufs_read_inode (struct grub_ufs_data *data, int ino, char *inode)
2N/A{
2N/A struct grub_ufs_sblock *sblock = &data->sblock;
2N/A
2N/A /* Determine the group the inode is in. */
2N/A int group = ino / grub_le_to_cpu32 (sblock->ino_per_group);
2N/A
2N/A /* Determine the inode within the group. */
2N/A int grpino = ino % grub_le_to_cpu32 (sblock->ino_per_group);
2N/A
2N/A /* The first block of the group. */
2N/A int grpblk = group * (grub_le_to_cpu32 (sblock->frags_per_group));
2N/A
2N/A#ifndef MODE_UFS2
2N/A grpblk += grub_le_to_cpu32 (sblock->cylg_offset)
2N/A * (group & (~grub_le_to_cpu32 (sblock->cylg_mask)));
2N/A#endif
2N/A
2N/A if (!inode)
2N/A {
2N/A inode = (char *) &data->inode;
2N/A data->ino = ino;
2N/A }
2N/A
2N/A grub_disk_read (data->disk,
2N/A ((grub_le_to_cpu32 (sblock->inoblk_offs) + grpblk)
2N/A << grub_le_to_cpu32 (data->sblock.log2_blksz))
2N/A + grpino / UFS_INODE_PER_BLOCK,
2N/A (grpino % UFS_INODE_PER_BLOCK)
2N/A * sizeof (struct grub_ufs_inode),
2N/A sizeof (struct grub_ufs_inode),
2N/A inode);
2N/A
2N/A return grub_errno;
2N/A}
2N/A
2N/A
2N/A/* Lookup the symlink the current inode points to. INO is the inode
2N/A number of the directory the symlink is relative to. */
2N/Astatic grub_err_t
2N/Agrub_ufs_lookup_symlink (struct grub_ufs_data *data, int ino)
2N/A{
2N/A char symlink[INODE_SIZE (data) + 1];
2N/A
2N/A if (++data->linknest > GRUB_UFS_MAX_SYMLNK_CNT)
2N/A return grub_error (GRUB_ERR_SYMLINK_LOOP, "too deep nesting of symlinks");
2N/A
2N/A if (INODE_SIZE (data) <= sizeof (data->inode.symlink))
2N/A grub_strcpy (symlink, (char *) INODE (data, symlink));
2N/A else
2N/A grub_ufs_read_file (data, 0, 0, INODE_SIZE (data), symlink);
2N/A symlink[INODE_SIZE (data)] = '\0';
2N/A
2N/A /* The symlink is an absolute path, go back to the root inode. */
2N/A if (symlink[0] == '/')
2N/A ino = GRUB_UFS_INODE;
2N/A
2N/A /* Now load in the old inode. */
2N/A if (grub_ufs_read_inode (data, ino, 0))
2N/A return grub_errno;
2N/A
2N/A grub_ufs_find_file (data, symlink);
2N/A if (grub_errno)
2N/A grub_error (grub_errno, "cannot follow symlink `%s'", symlink);
2N/A
2N/A return grub_errno;
2N/A}
2N/A
2N/A
2N/A/* Find the file with the pathname PATH on the filesystem described by
2N/A DATA. */
2N/Astatic grub_err_t
2N/Agrub_ufs_find_file (struct grub_ufs_data *data, const char *path)
2N/A{
2N/A char fpath[grub_strlen (path) + 1];
2N/A char *name = fpath;
2N/A char *next;
2N/A unsigned int pos = 0;
2N/A int dirino;
2N/A
2N/A grub_strcpy (fpath, path);
2N/A
2N/A /* Skip the first slash. */
2N/A if (name[0] == '/')
2N/A {
2N/A name++;
2N/A if (!*name)
2N/A return 0;
2N/A }
2N/A
2N/A /* Extract the actual part from the pathname. */
2N/A next = grub_strchr (name, '/');
2N/A if (next)
2N/A {
2N/A next[0] = '\0';
2N/A next++;
2N/A }
2N/A
2N/A do
2N/A {
2N/A struct grub_ufs_dirent dirent;
2N/A int namelen;
2N/A
2N/A if (grub_strlen (name) == 0)
2N/A return GRUB_ERR_NONE;
2N/A
2N/A if (grub_ufs_read_file (data, 0, pos, sizeof (dirent),
2N/A (char *) &dirent) < 0)
2N/A return grub_errno;
2N/A
2N/A#ifdef MODE_UFS2
2N/A namelen = dirent.namelen_bsd;
2N/A#else
2N/A namelen = grub_le_to_cpu16 (dirent.namelen);
2N/A#endif
2N/A {
2N/A char filename[namelen + 1];
2N/A
2N/A if (grub_ufs_read_file (data, 0, pos + sizeof (dirent),
2N/A namelen, filename) < 0)
2N/A return grub_errno;
2N/A
2N/A filename[namelen] = '\0';
2N/A
2N/A if (!grub_strcmp (name, filename))
2N/A {
2N/A dirino = data->ino;
2N/A grub_ufs_read_inode (data, grub_le_to_cpu32 (dirent.ino), 0);
2N/A
2N/A if ((INODE_MODE(data) & GRUB_UFS_ATTR_TYPE)
2N/A == GRUB_UFS_ATTR_LNK)
2N/A {
2N/A grub_ufs_lookup_symlink (data, dirino);
2N/A if (grub_errno)
2N/A return grub_errno;
2N/A }
2N/A
2N/A if (!next)
2N/A return 0;
2N/A
2N/A pos = 0;
2N/A
2N/A name = next;
2N/A next = grub_strchr (name, '/');
2N/A if (next)
2N/A {
2N/A next[0] = '\0';
2N/A next++;
2N/A }
2N/A
2N/A if ((INODE_MODE(data) & GRUB_UFS_ATTR_TYPE) != GRUB_UFS_ATTR_DIR)
2N/A return grub_error (GRUB_ERR_BAD_FILE_TYPE, "not a directory");
2N/A
2N/A continue;
2N/A }
2N/A }
2N/A
2N/A pos += grub_le_to_cpu16 (dirent.direntlen);
2N/A } while (pos < INODE_SIZE (data));
2N/A
2N/A grub_error (GRUB_ERR_FILE_NOT_FOUND, "file `%s' not found", path);
2N/A return grub_errno;
2N/A}
2N/A
2N/A
2N/A/* Mount the filesystem on the disk DISK. */
2N/Astatic struct grub_ufs_data *
2N/Agrub_ufs_mount (grub_disk_t disk)
2N/A{
2N/A struct grub_ufs_data *data;
2N/A int *sblklist = sblocklist;
2N/A
2N/A data = grub_malloc (sizeof (struct grub_ufs_data));
2N/A if (!data)
2N/A return 0;
2N/A
2N/A /* Find a UFS sblock. */
2N/A while (*sblklist != -1)
2N/A {
2N/A grub_disk_read (disk, *sblklist, 0, sizeof (struct grub_ufs_sblock),
2N/A &data->sblock);
2N/A if (grub_errno)
2N/A goto fail;
2N/A
2N/A /* No need to byteswap bsize in this check. It works the same on both
2N/A endiannesses. */
2N/A if (grub_le_to_cpu32 (data->sblock.magic) == GRUB_UFS_MAGIC
2N/A && data->sblock.bsize != 0
2N/A && ((data->sblock.bsize & (data->sblock.bsize - 1)) == 0))
2N/A {
2N/A for (data->log2_blksz = 0;
2N/A (1U << data->log2_blksz) < grub_le_to_cpu32 (data->sblock.bsize);
2N/A data->log2_blksz++);
2N/A
2N/A data->disk = disk;
2N/A data->linknest = 0;
2N/A return data;
2N/A }
2N/A sblklist++;
2N/A }
2N/A
2N/A fail:
2N/A
2N/A if (grub_errno == GRUB_ERR_NONE || grub_errno == GRUB_ERR_OUT_OF_RANGE)
2N/A {
2N/A#ifdef MODE_UFS2
2N/A grub_error (GRUB_ERR_BAD_FS, "not an ufs2 filesystem");
2N/A#else
2N/A grub_error (GRUB_ERR_BAD_FS, "not an ufs1 filesystem");
2N/A#endif
2N/A }
2N/A
2N/A grub_free (data);
2N/A
2N/A return 0;
2N/A}
2N/A
2N/A
2N/Astatic grub_err_t
2N/Agrub_ufs_dir (grub_device_t device, const char *path,
2N/A int (*hook) (const char *filename,
2N/A const struct grub_dirhook_info *info))
2N/A{
2N/A struct grub_ufs_data *data;
2N/A unsigned int pos = 0;
2N/A
2N/A data = grub_ufs_mount (device->disk);
2N/A if (!data)
2N/A return grub_errno;
2N/A
2N/A grub_ufs_read_inode (data, GRUB_UFS_INODE, 0);
2N/A if (grub_errno)
2N/A return grub_errno;
2N/A
2N/A if (!path || path[0] != '/')
2N/A {
2N/A grub_error (GRUB_ERR_BAD_FILENAME, "bad filename");
2N/A return grub_errno;
2N/A }
2N/A
2N/A grub_ufs_find_file (data, path);
2N/A if (grub_errno)
2N/A goto fail;
2N/A
2N/A if ((INODE_MODE (data) & GRUB_UFS_ATTR_TYPE) != GRUB_UFS_ATTR_DIR)
2N/A {
2N/A grub_error (GRUB_ERR_BAD_FILE_TYPE, "not a directory");
2N/A goto fail;
2N/A }
2N/A
2N/A while (pos < INODE_SIZE (data))
2N/A {
2N/A struct grub_ufs_dirent dirent;
2N/A int namelen;
2N/A
2N/A if (grub_ufs_read_file (data, 0, pos, sizeof (dirent),
2N/A (char *) &dirent) < 0)
2N/A break;
2N/A
2N/A#ifdef MODE_UFS2
2N/A namelen = dirent.namelen_bsd;
2N/A#else
2N/A namelen = grub_le_to_cpu16 (dirent.namelen);
2N/A#endif
2N/A
2N/A {
2N/A char filename[namelen + 1];
2N/A struct grub_dirhook_info info;
2N/A struct grub_ufs_inode inode;
2N/A
2N/A grub_memset (&info, 0, sizeof (info));
2N/A
2N/A if (grub_ufs_read_file (data, 0, pos + sizeof (dirent),
2N/A namelen, filename) < 0)
2N/A break;
2N/A
2N/A filename[namelen] = '\0';
2N/A grub_ufs_read_inode (data, dirent.ino, (char *) &inode);
2N/A
2N/A info.dir = ((grub_le_to_cpu16 (inode.mode) & GRUB_UFS_ATTR_TYPE)
2N/A == GRUB_UFS_ATTR_DIR);
2N/A info.mtime = grub_le_to_cpu64 (inode.mtime);
2N/A info.mtimeset = 1;
2N/A
2N/A if (hook (filename, &info))
2N/A break;
2N/A }
2N/A
2N/A pos += grub_le_to_cpu16 (dirent.direntlen);
2N/A }
2N/A
2N/A fail:
2N/A grub_free (data);
2N/A
2N/A return grub_errno;
2N/A}
2N/A
2N/A
2N/A/* Open a file named NAME and initialize FILE. */
2N/Astatic grub_err_t
2N/Agrub_ufs_open (struct grub_file *file, const char *name)
2N/A{
2N/A struct grub_ufs_data *data;
2N/A data = grub_ufs_mount (file->device->disk);
2N/A if (!data)
2N/A return grub_errno;
2N/A
2N/A grub_ufs_read_inode (data, 2, 0);
2N/A if (grub_errno)
2N/A {
2N/A grub_free (data);
2N/A return grub_errno;
2N/A }
2N/A
2N/A if (!name || name[0] != '/')
2N/A {
2N/A grub_error (GRUB_ERR_BAD_FILENAME, "bad filename");
2N/A return grub_errno;
2N/A }
2N/A
2N/A grub_ufs_find_file (data, name);
2N/A if (grub_errno)
2N/A {
2N/A grub_free (data);
2N/A return grub_errno;
2N/A }
2N/A
2N/A file->data = data;
2N/A file->size = INODE_SIZE (data);
2N/A
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/A
2N/Astatic grub_ssize_t
2N/Agrub_ufs_read (grub_file_t file, char *buf, grub_size_t len)
2N/A{
2N/A struct grub_ufs_data *data =
2N/A (struct grub_ufs_data *) file->data;
2N/A
2N/A return grub_ufs_read_file (data, file->read_hook, file->offset, len, buf);
2N/A}
2N/A
2N/A
2N/Astatic grub_err_t
2N/Agrub_ufs_close (grub_file_t file)
2N/A{
2N/A grub_free (file->data);
2N/A
2N/A return GRUB_ERR_NONE;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_ufs_label (grub_device_t device, char **label)
2N/A{
2N/A struct grub_ufs_data *data = 0;
2N/A
2N/A grub_dl_ref (my_mod);
2N/A
2N/A *label = 0;
2N/A
2N/A data = grub_ufs_mount (device->disk);
2N/A if (data)
2N/A *label = grub_strdup ((char *) data->sblock.volume_name);
2N/A
2N/A grub_dl_unref (my_mod);
2N/A
2N/A grub_free (data);
2N/A
2N/A return grub_errno;
2N/A}
2N/A
2N/Astatic grub_err_t
2N/Agrub_ufs_uuid (grub_device_t device, char **uuid)
2N/A{
2N/A struct grub_ufs_data *data;
2N/A grub_disk_t disk = device->disk;
2N/A
2N/A grub_dl_ref (my_mod);
2N/A
2N/A data = grub_ufs_mount (disk);
2N/A if (data && (data->sblock.uuidhi != 0 || data->sblock.uuidlow != 0))
2N/A *uuid = grub_xasprintf ("%08x%08x",
2N/A (unsigned) grub_le_to_cpu32 (data->sblock.uuidhi),
2N/A (unsigned) grub_le_to_cpu32 (data->sblock.uuidlow));
2N/A else
2N/A *uuid = grub_strdup("");
2N/A
2N/A grub_dl_unref (my_mod);
2N/A
2N/A grub_free (data);
2N/A
2N/A return grub_errno;
2N/A}
2N/A
2N/A
2N/A/* Get mtime. */
2N/Astatic grub_err_t
2N/Agrub_ufs_mtime (grub_device_t device, grub_int32_t *tm)
2N/A{
2N/A struct grub_ufs_data *data = 0;
2N/A
2N/A grub_dl_ref (my_mod);
2N/A
2N/A data = grub_ufs_mount (device->disk);
2N/A if (!data)
2N/A *tm = 0;
2N/A else
2N/A {
2N/A *tm = grub_le_to_cpu32 (data->sblock.mtime);
2N/A#ifdef MODE_UFS2
2N/A if (*tm < (grub_int64_t) grub_le_to_cpu64 (data->sblock.mtime2))
2N/A *tm = grub_le_to_cpu64 (data->sblock.mtime2);
2N/A#endif
2N/A }
2N/A
2N/A grub_dl_unref (my_mod);
2N/A
2N/A grub_free (data);
2N/A
2N/A return grub_errno;
2N/A}
2N/A
2N/A
2N/A
2N/Astatic struct grub_fs grub_ufs_fs =
2N/A {
2N/A#ifdef MODE_UFS2
2N/A .name = "ufs2",
2N/A#else
2N/A .name = "ufs1",
2N/A#endif
2N/A .dir = grub_ufs_dir,
2N/A .open = grub_ufs_open,
2N/A .read = grub_ufs_read,
2N/A .close = grub_ufs_close,
2N/A .label = grub_ufs_label,
2N/A .uuid = grub_ufs_uuid,
2N/A .mtime = grub_ufs_mtime,
2N/A .next = 0
2N/A };
2N/A
2N/A#ifdef MODE_UFS2
2N/AGRUB_MOD_INIT(ufs2)
2N/A#else
2N/AGRUB_MOD_INIT(ufs1)
2N/A#endif
2N/A{
2N/A grub_fs_register (&grub_ufs_fs);
2N/A my_mod = mod;
2N/A}
2N/A
2N/A#ifdef MODE_UFS2
2N/AGRUB_MOD_FINI(ufs2)
2N/A#else
2N/AGRUB_MOD_FINI(ufs1)
2N/A#endif
2N/A{
2N/A grub_fs_unregister (&grub_ufs_fs);
2N/A}
2N/A