diff options
Diffstat (limited to 'grub-core/fs/ufs.c')
| -rw-r--r-- | grub-core/fs/ufs.c | 918 |
1 files changed, 918 insertions, 0 deletions
diff --git a/grub-core/fs/ufs.c b/grub-core/fs/ufs.c new file mode 100644 index 0000000..34a698b --- /dev/null +++ b/grub-core/fs/ufs.c @@ -0,0 +1,918 @@ +/* ufs.c - Unix File System */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2004,2005,2007,2008,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/err.h> +#include <grub/file.h> +#include <grub/mm.h> +#include <grub/misc.h> +#include <grub/disk.h> +#include <grub/dl.h> +#include <grub/types.h> +#include <grub/i18n.h> + +GRUB_MOD_LICENSE ("GPLv3+"); + +#ifdef MODE_UFS2 +#define GRUB_UFS_MAGIC 0x19540119 +#else +#define GRUB_UFS_MAGIC 0x11954 +#endif + +#define GRUB_UFS_INODE 2 +#define GRUB_UFS_FILETYPE_DIR 4 +#define GRUB_UFS_FILETYPE_LNK 10 +#define GRUB_UFS_MAX_SYMLNK_CNT 8 + +#define GRUB_UFS_DIRBLKS 12 +#define GRUB_UFS_INDIRBLKS 3 + +#define GRUB_UFS_ATTR_TYPE 0160000 +#define GRUB_UFS_ATTR_FILE 0100000 +#define GRUB_UFS_ATTR_DIR 0040000 +#define GRUB_UFS_ATTR_LNK 0120000 + +#define GRUB_UFS_VOLNAME_LEN 32 + +#ifdef MODE_BIGENDIAN +#define grub_ufs_to_cpu16 grub_be_to_cpu16 +#define grub_ufs_to_cpu32 grub_be_to_cpu32 +#define grub_ufs_to_cpu64 grub_be_to_cpu64 +#define grub_cpu_to_ufs32_compile_time grub_cpu_to_be32_compile_time +#else +#define grub_ufs_to_cpu16 grub_le_to_cpu16 +#define grub_ufs_to_cpu32 grub_le_to_cpu32 +#define grub_ufs_to_cpu64 grub_le_to_cpu64 +#define grub_cpu_to_ufs32_compile_time grub_cpu_to_le32_compile_time +#endif + +#ifdef MODE_UFS2 +typedef grub_uint64_t grub_ufs_blk_t; +static inline grub_disk_addr_t +grub_ufs_to_cpu_blk (grub_ufs_blk_t blk) +{ + return grub_ufs_to_cpu64 (blk); +} +#else +typedef grub_uint32_t grub_ufs_blk_t; +static inline grub_disk_addr_t +grub_ufs_to_cpu_blk (grub_ufs_blk_t blk) +{ + return grub_ufs_to_cpu32 (blk); +} +#endif + +/* Calculate in which group the inode can be found. */ +#define UFS_BLKSZ(sblock) (grub_ufs_to_cpu32 (sblock->bsize)) +#define UFS_LOG_BLKSZ(sblock) (data->log2_blksz) + +#ifdef MODE_UFS2 +#define INODE_ENDIAN(data,field,bits1,bits2) grub_ufs_to_cpu##bits2 (data->inode.field) +#else +#define INODE_ENDIAN(data,field,bits1,bits2) grub_ufs_to_cpu##bits1 (data->inode.field) +#endif + +#define INODE_SIZE(data) grub_ufs_to_cpu64 (data->inode.size) +#define INODE_MODE(data) grub_ufs_to_cpu16 (data->inode.mode) +#ifdef MODE_UFS2 +#define LOG_INODE_BLKSZ 3 +#else +#define LOG_INODE_BLKSZ 2 +#endif +#ifdef MODE_UFS2 +#define UFS_INODE_PER_BLOCK 2 +#else +#define UFS_INODE_PER_BLOCK 4 +#endif +#define INODE_DIRBLOCKS(data,blk) INODE_ENDIAN \ + (data,blocks.dir_blocks[blk],32,64) +#define INODE_INDIRBLOCKS(data,blk) INODE_ENDIAN \ + (data,blocks.indir_blocks[blk],32,64) + +/* The blocks on which the superblock can be found. */ +static int sblocklist[] = { 128, 16, 0, 512, -1 }; + +struct grub_ufs_sblock +{ + grub_uint8_t unused[16]; + /* The offset of the inodes in the cylinder group. */ + grub_uint32_t inoblk_offs; + + grub_uint8_t unused2[4]; + + /* The start of the cylinder group. */ + grub_uint32_t cylg_offset; + grub_uint32_t cylg_mask; + + grub_uint32_t mtime; + grub_uint8_t unused4[12]; + + /* The size of a block in bytes. */ + grub_int32_t bsize; + grub_uint8_t unused5[48]; + + /* The size of filesystem blocks to disk blocks. */ + grub_uint32_t log2_blksz; + grub_uint8_t unused6[40]; + grub_uint32_t uuidhi; + grub_uint32_t uuidlow; + grub_uint8_t unused7[32]; + + /* Inodes stored per cylinder group. */ + grub_uint32_t ino_per_group; + + /* The frags per cylinder group. */ + grub_uint32_t frags_per_group; + + grub_uint8_t unused8[488]; + + /* Volume name for UFS2. */ + grub_uint8_t volume_name[GRUB_UFS_VOLNAME_LEN]; + grub_uint8_t unused9[360]; + + grub_uint64_t mtime2; + grub_uint8_t unused10[292]; + + /* Magic value to check if this is really a UFS filesystem. */ + grub_uint32_t magic; +}; + +#ifdef MODE_UFS2 +/* UFS inode. */ +struct grub_ufs_inode +{ + grub_uint16_t mode; + grub_uint16_t nlinks; + grub_uint32_t uid; + grub_uint32_t gid; + grub_uint32_t blocksize; + grub_uint64_t size; + grub_int64_t nblocks; + grub_uint64_t atime; + grub_uint64_t mtime; + grub_uint64_t ctime; + grub_uint64_t create_time; + grub_uint32_t atime_usec; + grub_uint32_t mtime_usec; + grub_uint32_t ctime_usec; + grub_uint32_t create_time_sec; + grub_uint32_t gen; + grub_uint32_t kernel_flags; + grub_uint32_t flags; + grub_uint32_t extsz; + grub_uint64_t ext[2]; + union + { + struct + { + grub_uint64_t dir_blocks[GRUB_UFS_DIRBLKS]; + grub_uint64_t indir_blocks[GRUB_UFS_INDIRBLKS]; + } blocks; + grub_uint8_t symlink[(GRUB_UFS_DIRBLKS + GRUB_UFS_INDIRBLKS) * 8]; + }; + + grub_uint8_t unused[24]; +} GRUB_PACKED; +#else +/* UFS inode. */ +struct grub_ufs_inode +{ + grub_uint16_t mode; + grub_uint16_t nlinks; + grub_uint16_t uid; + grub_uint16_t gid; + grub_uint64_t size; + grub_uint32_t atime; + grub_uint32_t atime_usec; + grub_uint32_t mtime; + grub_uint32_t mtime_usec; + grub_uint32_t ctime; + grub_uint32_t ctime_usec; + union + { + struct + { + grub_uint32_t dir_blocks[GRUB_UFS_DIRBLKS]; + grub_uint32_t indir_blocks[GRUB_UFS_INDIRBLKS]; + } blocks; + grub_uint8_t symlink[(GRUB_UFS_DIRBLKS + GRUB_UFS_INDIRBLKS) * 4]; + }; + grub_uint32_t flags; + grub_uint32_t nblocks; + grub_uint32_t gen; + grub_uint32_t unused; + grub_uint8_t pad[12]; +} GRUB_PACKED; +#endif + +/* Directory entry. */ +struct grub_ufs_dirent +{ + grub_uint32_t ino; + grub_uint16_t direntlen; + union + { + grub_uint16_t namelen; + struct + { + grub_uint8_t filetype_bsd; + grub_uint8_t namelen_bsd; + }; + }; +} GRUB_PACKED; + +/* Information about a "mounted" ufs filesystem. */ +struct grub_ufs_data +{ + struct grub_ufs_sblock sblock; + grub_disk_t disk; + struct grub_ufs_inode inode; + int ino; + int linknest; + int log2_blksz; +}; + +static grub_dl_t my_mod; + +/* Forward declaration. */ +static grub_err_t grub_ufs_find_file (struct grub_ufs_data *data, + const char *path); + + +static grub_disk_addr_t +grub_ufs_get_file_block (struct grub_ufs_data *data, grub_disk_addr_t blk) +{ + unsigned long indirsz; + int log2_blksz, log_indirsz; + + /* Direct. */ + if (blk < GRUB_UFS_DIRBLKS) + return INODE_DIRBLOCKS (data, blk); + + log2_blksz = grub_ufs_to_cpu32 (data->sblock.log2_blksz); + + blk -= GRUB_UFS_DIRBLKS; + + log_indirsz = data->log2_blksz - LOG_INODE_BLKSZ; + indirsz = 1 << log_indirsz; + + /* Single indirect block. */ + if (blk < indirsz) + { + grub_ufs_blk_t indir; + grub_disk_read (data->disk, + ((grub_disk_addr_t) INODE_INDIRBLOCKS (data, 0)) + << log2_blksz, + blk * sizeof (indir), sizeof (indir), &indir); + return indir; + } + blk -= indirsz; + + /* Double indirect block. */ + if (blk < (grub_disk_addr_t) indirsz * (grub_disk_addr_t) indirsz) + { + grub_ufs_blk_t indir; + + grub_disk_read (data->disk, + ((grub_disk_addr_t) INODE_INDIRBLOCKS (data, 1)) + << log2_blksz, + (blk >> log_indirsz) * sizeof (indir), + sizeof (indir), &indir); + grub_disk_read (data->disk, + grub_ufs_to_cpu_blk (indir) << log2_blksz, + (blk & ((1 << log_indirsz) - 1)) * sizeof (indir), + sizeof (indir), &indir); + + return indir; + } + + blk -= (grub_disk_addr_t) indirsz * (grub_disk_addr_t) indirsz; + + /* Triple indirect block. */ + if (!(blk >> (3 * log_indirsz))) + { + grub_ufs_blk_t indir; + + grub_disk_read (data->disk, + ((grub_disk_addr_t) INODE_INDIRBLOCKS (data, 2)) + << log2_blksz, + (blk >> (2 * log_indirsz)) * sizeof (indir), + sizeof (indir), &indir); + grub_disk_read (data->disk, + grub_ufs_to_cpu_blk (indir) << log2_blksz, + ((blk >> log_indirsz) + & ((1 << log_indirsz) - 1)) * sizeof (indir), + sizeof (indir), &indir); + + grub_disk_read (data->disk, + grub_ufs_to_cpu_blk (indir) << log2_blksz, + (blk & ((1 << log_indirsz) - 1)) * sizeof (indir), + sizeof (indir), &indir); + + return indir; + } + + grub_error (GRUB_ERR_BAD_FS, + "ufs does not support quadruple indirect blocks"); + return 0; +} + + +/* Read LEN bytes from the file described by DATA starting with byte + POS. Return the amount of read bytes in READ. */ +static grub_ssize_t +grub_ufs_read_file (struct grub_ufs_data *data, + grub_disk_read_hook_t read_hook, void *read_hook_data, + grub_off_t pos, grub_size_t len, char *buf) +{ + struct grub_ufs_sblock *sblock = &data->sblock; + grub_off_t i; + grub_off_t blockcnt; + + /* Adjust len so it we can't read past the end of the file. */ + if (len + pos > INODE_SIZE (data)) + len = INODE_SIZE (data) - pos; + + blockcnt = (len + pos + UFS_BLKSZ (sblock) - 1) >> UFS_LOG_BLKSZ (sblock); + + for (i = pos >> UFS_LOG_BLKSZ (sblock); i < blockcnt; i++) + { + grub_disk_addr_t blknr; + grub_off_t blockoff; + grub_off_t blockend = UFS_BLKSZ (sblock); + + int skipfirst = 0; + + blockoff = pos & (UFS_BLKSZ (sblock) - 1); + + blknr = grub_ufs_get_file_block (data, i); + if (grub_errno) + return -1; + + /* Last block. */ + if (i == blockcnt - 1) + { + blockend = (len + pos) & (UFS_BLKSZ (sblock) - 1); + + if (!blockend) + blockend = UFS_BLKSZ (sblock); + } + + /* First block. */ + if (i == (pos >> UFS_LOG_BLKSZ (sblock))) + { + skipfirst = blockoff; + blockend -= skipfirst; + } + + /* XXX: If the block number is 0 this block is not stored on + disk but is zero filled instead. */ + if (blknr) + { + data->disk->read_hook = read_hook; + data->disk->read_hook_data = read_hook_data; + grub_disk_read (data->disk, + blknr << grub_ufs_to_cpu32 (data->sblock.log2_blksz), + skipfirst, blockend, buf); + data->disk->read_hook = 0; + if (grub_errno) + return -1; + } + else + grub_memset (buf, 0, blockend); + + buf += UFS_BLKSZ (sblock) - skipfirst; + } + + return len; +} + +/* Read inode INO from the mounted filesystem described by DATA. This + inode is used by default now. */ +static grub_err_t +grub_ufs_read_inode (struct grub_ufs_data *data, int ino, char *inode) +{ + struct grub_ufs_sblock *sblock = &data->sblock; + + /* Determine the group the inode is in. */ + int group = ino / grub_ufs_to_cpu32 (sblock->ino_per_group); + + /* Determine the inode within the group. */ + int grpino = ino % grub_ufs_to_cpu32 (sblock->ino_per_group); + + /* The first block of the group. */ + int grpblk = group * (grub_ufs_to_cpu32 (sblock->frags_per_group)); + +#ifndef MODE_UFS2 + grpblk += grub_ufs_to_cpu32 (sblock->cylg_offset) + * (group & (~grub_ufs_to_cpu32 (sblock->cylg_mask))); +#endif + + if (!inode) + { + inode = (char *) &data->inode; + data->ino = ino; + } + + grub_disk_read (data->disk, + ((grub_ufs_to_cpu32 (sblock->inoblk_offs) + grpblk) + << grub_ufs_to_cpu32 (data->sblock.log2_blksz)) + + grpino / UFS_INODE_PER_BLOCK, + (grpino % UFS_INODE_PER_BLOCK) + * sizeof (struct grub_ufs_inode), + sizeof (struct grub_ufs_inode), + inode); + + return grub_errno; +} + + +/* Lookup the symlink the current inode points to. INO is the inode + number of the directory the symlink is relative to. */ +static grub_err_t +grub_ufs_lookup_symlink (struct grub_ufs_data *data, int ino) +{ + char *symlink; + grub_size_t sz = INODE_SIZE (data); + + if (++data->linknest > GRUB_UFS_MAX_SYMLNK_CNT) + return grub_error (GRUB_ERR_SYMLINK_LOOP, N_("too deep nesting of symlinks")); + + symlink = grub_malloc (sz + 1); + if (!symlink) + return grub_errno; + /* Normally we should just check that data->inode.nblocks == 0. + However old Linux doesn't maintain nblocks correctly and so it's always + 0. If size is bigger than inline space then the symlink is surely not + inline. */ + /* Check against zero is paylindromic, no need to swap. */ + if (data->inode.nblocks == 0 + && INODE_SIZE (data) <= sizeof (data->inode.symlink)) + grub_strcpy (symlink, (char *) data->inode.symlink); + else + { + if (grub_ufs_read_file (data, 0, 0, 0, sz, symlink) < 0) + { + grub_free(symlink); + return grub_errno; + } + } + symlink[sz] = '\0'; + + /* 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_int64_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 + .fs_dir = grub_ufs_dir, + .fs_open = grub_ufs_open, + .fs_read = grub_ufs_read, + .fs_close = grub_ufs_close, + .fs_label = grub_ufs_label, + .fs_uuid = grub_ufs_uuid, + .fs_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); +} + |