#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/vmalloc.h>
+#include <linux/errno.h>
+#include <linux/mount.h>
+#include <linux/seq_file.h>
+#include <linux/bitmap.h>
+#include <linux/crc-itu-t.h>
#include <asm/byteorder.h>
-#include <linux/udf_fs.h>
#include "udf_sb.h"
#include "udf_i.h"
#define VDS_POS_TERMINATING_DESC 6
#define VDS_POS_LENGTH 7
+#define UDF_DEFAULT_BLOCKSIZE 2048
+
static char error_buf[1024];
/* These are the "meat" - everything else is stuffing */
static int udf_fill_super(struct super_block *, void *, int);
static void udf_put_super(struct super_block *);
-static void udf_write_super(struct super_block *);
+static int udf_sync_fs(struct super_block *, int);
static int udf_remount_fs(struct super_block *, int *, char *);
-static int udf_check_valid(struct super_block *, int, int);
-static int udf_vrs(struct super_block *sb, int silent);
-static int udf_load_partition(struct super_block *, kernel_lb_addr *);
-static int udf_load_logicalvol(struct super_block *, struct buffer_head *,
- kernel_lb_addr *);
-static void udf_load_logicalvolint(struct super_block *, kernel_extent_ad);
-static void udf_find_anchor(struct super_block *);
-static int udf_find_fileset(struct super_block *, kernel_lb_addr *,
- kernel_lb_addr *);
-static void udf_load_pvoldesc(struct super_block *, struct buffer_head *);
+static void udf_load_logicalvolint(struct super_block *, struct kernel_extent_ad);
+static int udf_find_fileset(struct super_block *, struct kernel_lb_addr *,
+ struct kernel_lb_addr *);
static void udf_load_fileset(struct super_block *, struct buffer_head *,
- kernel_lb_addr *);
-static int udf_load_partdesc(struct super_block *, struct buffer_head *);
+ struct kernel_lb_addr *);
static void udf_open_lvid(struct super_block *);
static void udf_close_lvid(struct super_block *);
static unsigned int udf_count_free(struct super_block *);
static int udf_statfs(struct dentry *, struct kstatfs *);
+static int udf_show_options(struct seq_file *, struct vfsmount *);
+static void udf_error(struct super_block *sb, const char *function,
+ const char *fmt, ...);
struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi)
{
- struct logicalVolIntegrityDesc *lvid = (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
+ struct logicalVolIntegrityDesc *lvid =
+ (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
__u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions);
- __u32 offset = number_of_partitions * 2 * sizeof(uint32_t)/sizeof(uint8_t);
+ __u32 offset = number_of_partitions * 2 *
+ sizeof(uint32_t)/sizeof(uint8_t);
return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]);
}
kmem_cache_free(udf_inode_cachep, UDF_I(inode));
}
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
{
struct udf_inode_info *ei = (struct udf_inode_info *)foo;
.delete_inode = udf_delete_inode,
.clear_inode = udf_clear_inode,
.put_super = udf_put_super,
- .write_super = udf_write_super,
+ .sync_fs = udf_sync_fs,
.statfs = udf_statfs,
.remount_fs = udf_remount_fs,
+ .show_options = udf_show_options,
};
struct udf_options {
mode_t umask;
gid_t gid;
uid_t uid;
+ mode_t fmode;
+ mode_t dmode;
struct nls_table *nls_map;
};
module_init(init_udf_fs)
module_exit(exit_udf_fs)
+static int udf_sb_alloc_partition_maps(struct super_block *sb, u32 count)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ sbi->s_partmaps = kcalloc(count, sizeof(struct udf_part_map),
+ GFP_KERNEL);
+ if (!sbi->s_partmaps) {
+ udf_error(sb, __func__,
+ "Unable to allocate space for %d partition maps",
+ count);
+ sbi->s_partitions = 0;
+ return -ENOMEM;
+ }
+
+ sbi->s_partitions = count;
+ return 0;
+}
+
+static int udf_show_options(struct seq_file *seq, struct vfsmount *mnt)
+{
+ struct super_block *sb = mnt->mnt_sb;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT))
+ seq_puts(seq, ",nostrict");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_BLOCKSIZE_SET))
+ seq_printf(seq, ",bs=%lu", sb->s_blocksize);
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNHIDE))
+ seq_puts(seq, ",unhide");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UNDELETE))
+ seq_puts(seq, ",undelete");
+ if (!UDF_QUERY_FLAG(sb, UDF_FLAG_USE_AD_IN_ICB))
+ seq_puts(seq, ",noadinicb");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_USE_SHORT_AD))
+ seq_puts(seq, ",shortad");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_FORGET))
+ seq_puts(seq, ",uid=forget");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_IGNORE))
+ seq_puts(seq, ",uid=ignore");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_FORGET))
+ seq_puts(seq, ",gid=forget");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_IGNORE))
+ seq_puts(seq, ",gid=ignore");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UID_SET))
+ seq_printf(seq, ",uid=%u", sbi->s_uid);
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_GID_SET))
+ seq_printf(seq, ",gid=%u", sbi->s_gid);
+ if (sbi->s_umask != 0)
+ seq_printf(seq, ",umask=%o", sbi->s_umask);
+ if (sbi->s_fmode != UDF_INVALID_MODE)
+ seq_printf(seq, ",mode=%o", sbi->s_fmode);
+ if (sbi->s_dmode != UDF_INVALID_MODE)
+ seq_printf(seq, ",dmode=%o", sbi->s_dmode);
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_SESSION_SET))
+ seq_printf(seq, ",session=%u", sbi->s_session);
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_LASTBLOCK_SET))
+ seq_printf(seq, ",lastblock=%u", sbi->s_last_block);
+ if (sbi->s_anchor != 0)
+ seq_printf(seq, ",anchor=%u", sbi->s_anchor);
+ /*
+ * volume, partition, fileset and rootdir seem to be ignored
+ * currently
+ */
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_UTF8))
+ seq_puts(seq, ",utf8");
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP) && sbi->s_nls_map)
+ seq_printf(seq, ",iocharset=%s", sbi->s_nls_map->charset);
+
+ return 0;
+}
+
/*
* udf_parse_options
*
*
* gid= Set the default group.
* umask= Set the default umask.
+ * mode= Set the default file permissions.
+ * dmode= Set the default directory permissions.
* uid= Set the default user.
* bs= Set the block size.
* unhide Show otherwise hidden files.
Opt_gid, Opt_uid, Opt_umask, Opt_session, Opt_lastblock,
Opt_anchor, Opt_volume, Opt_partition, Opt_fileset,
Opt_rootdir, Opt_utf8, Opt_iocharset,
- Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore
+ Opt_err, Opt_uforget, Opt_uignore, Opt_gforget, Opt_gignore,
+ Opt_fmode, Opt_dmode
};
-static match_table_t tokens = {
+static const match_table_t tokens = {
{Opt_novrs, "novrs"},
{Opt_nostrict, "nostrict"},
{Opt_bs, "bs=%u"},
{Opt_rootdir, "rootdir=%u"},
{Opt_utf8, "utf8"},
{Opt_iocharset, "iocharset=%s"},
+ {Opt_fmode, "mode=%o"},
+ {Opt_dmode, "dmode=%o"},
{Opt_err, NULL}
};
-static int udf_parse_options(char *options, struct udf_options *uopt)
+static int udf_parse_options(char *options, struct udf_options *uopt,
+ bool remount)
{
char *p;
int option;
uopt->novrs = 0;
- uopt->blocksize = 2048;
uopt->partition = 0xFFFF;
uopt->session = 0xFFFFFFFF;
uopt->lastblock = 0;
switch (token) {
case Opt_novrs:
uopt->novrs = 1;
+ break;
case Opt_bs:
if (match_int(&args[0], &option))
return 0;
uopt->blocksize = option;
+ uopt->flags |= (1 << UDF_FLAG_BLOCKSIZE_SET);
break;
case Opt_unhide:
uopt->flags |= (1 << UDF_FLAG_UNHIDE);
if (match_int(args, &option))
return 0;
uopt->session = option;
+ if (!remount)
+ uopt->flags |= (1 << UDF_FLAG_SESSION_SET);
break;
case Opt_lastblock:
if (match_int(args, &option))
return 0;
uopt->lastblock = option;
+ if (!remount)
+ uopt->flags |= (1 << UDF_FLAG_LASTBLOCK_SET);
break;
case Opt_anchor:
if (match_int(args, &option))
case Opt_gforget:
uopt->flags |= (1 << UDF_FLAG_GID_FORGET);
break;
+ case Opt_fmode:
+ if (match_octal(args, &option))
+ return 0;
+ uopt->fmode = option & 0777;
+ break;
+ case Opt_dmode:
+ if (match_octal(args, &option))
+ return 0;
+ uopt->dmode = option & 0777;
+ break;
default:
printk(KERN_ERR "udf: bad mount option \"%s\" "
"or missing value\n", p);
return 1;
}
-void udf_write_super(struct super_block *sb)
-{
- lock_kernel();
-
- if (!(sb->s_flags & MS_RDONLY))
- udf_open_lvid(sb);
- sb->s_dirt = 0;
-
- unlock_kernel();
-}
-
static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
{
struct udf_options uopt;
uopt.uid = sbi->s_uid;
uopt.gid = sbi->s_gid;
uopt.umask = sbi->s_umask;
+ uopt.fmode = sbi->s_fmode;
+ uopt.dmode = sbi->s_dmode;
- if (!udf_parse_options(options, &uopt))
+ if (!udf_parse_options(options, &uopt, true))
return -EINVAL;
+ lock_kernel();
sbi->s_flags = uopt.flags;
sbi->s_uid = uopt.uid;
sbi->s_gid = uopt.gid;
sbi->s_umask = uopt.umask;
+ sbi->s_fmode = uopt.fmode;
+ sbi->s_dmode = uopt.dmode;
if (sbi->s_lvid_bh) {
int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
*flags |= MS_RDONLY;
}
- if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
+ if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
+ unlock_kernel();
return 0;
+ }
if (*flags & MS_RDONLY)
udf_close_lvid(sb);
else
udf_open_lvid(sb);
+ unlock_kernel();
return 0;
}
-/*
- * udf_set_blocksize
- *
- * PURPOSE
- * Set the block size to be used in all transfers.
- *
- * DESCRIPTION
- * To allow room for a DMA transfer, it is best to guess big when unsure.
- * This routine picks 2048 bytes as the blocksize when guessing. This
- * should be adequate until devices with larger block sizes become common.
- *
- * Note that the Linux kernel can currently only deal with blocksizes of
- * 512, 1024, 2048, 4096, and 8192 bytes.
- *
- * PRE-CONDITIONS
- * sb Pointer to _locked_ superblock.
- *
- * POST-CONDITIONS
- * sb->s_blocksize Blocksize.
- * sb->s_blocksize_bits log2 of blocksize.
- * <return> 0 Blocksize is valid.
- * <return> 1 Blocksize is invalid.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-static int udf_set_blocksize(struct super_block *sb, int bsize)
-{
- if (!sb_min_blocksize(sb, bsize)) {
- udf_debug("Bad block size (%d)\n", bsize);
- printk(KERN_ERR "udf: bad block size (%d)\n", bsize);
- return 0;
- }
-
- return sb->s_blocksize;
-}
-
-static int udf_vrs(struct super_block *sb, int silent)
+/* Check Volume Structure Descriptors (ECMA 167 2/9.1) */
+/* We also check any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
+static loff_t udf_check_vsd(struct super_block *sb)
{
struct volStructDesc *vsd = NULL;
- int sector = 32768;
+ loff_t sector = 32768;
int sectorsize;
struct buffer_head *bh = NULL;
- int iso9660 = 0;
int nsr02 = 0;
int nsr03 = 0;
struct udf_sb_info *sbi;
- /* Block size must be a multiple of 512 */
- if (sb->s_blocksize & 511)
- return 0;
sbi = UDF_SB(sb);
-
if (sb->s_blocksize < sizeof(struct volStructDesc))
sectorsize = sizeof(struct volStructDesc);
else
sector += (sbi->s_session << sb->s_blocksize_bits);
udf_debug("Starting at sector %u (%ld byte sectors)\n",
- (sector >> sb->s_blocksize_bits), sb->s_blocksize);
+ (unsigned int)(sector >> sb->s_blocksize_bits),
+ sb->s_blocksize);
/* Process the sequence (if applicable) */
for (; !nsr02 && !nsr03; sector += sectorsize) {
/* Read a block */
break;
} else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001,
VSD_STD_ID_LEN)) {
- iso9660 = sector;
switch (vsd->structType) {
case 0:
udf_debug("ISO9660 Boot Record found\n");
return 0;
}
-/*
- * udf_find_anchor
- *
- * PURPOSE
- * Find an anchor volume descriptor.
- *
- * PRE-CONDITIONS
- * sb Pointer to _locked_ superblock.
- * lastblock Last block on media.
- *
- * POST-CONDITIONS
- * <return> 1 if not found, 0 if ok
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-static void udf_find_anchor(struct super_block *sb)
-{
- int lastblock;
- struct buffer_head *bh = NULL;
- uint16_t ident;
- uint32_t location;
- int i;
- struct udf_sb_info *sbi;
-
- sbi = UDF_SB(sb);
- lastblock = sbi->s_last_block;
-
- if (lastblock) {
- int varlastblock = udf_variable_to_fixed(lastblock);
- int last[] = { lastblock, lastblock - 2,
- lastblock - 150, lastblock - 152,
- varlastblock, varlastblock - 2,
- varlastblock - 150, varlastblock - 152 };
-
- lastblock = 0;
-
- /* Search for an anchor volume descriptor pointer */
-
- /* according to spec, anchor is in either:
- * block 256
- * lastblock-256
- * lastblock
- * however, if the disc isn't closed, it could be 512 */
-
- for (i = 0; !lastblock && i < ARRAY_SIZE(last); i++) {
- ident = location = 0;
- if (last[i] >= 0) {
- bh = sb_bread(sb, last[i]);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(t->tagIdent);
- location = le32_to_cpu(t->tagLocation);
- brelse(bh);
- }
- }
-
- if (ident == TAG_IDENT_AVDP) {
- if (location == last[i] - sbi->s_session) {
- lastblock = last[i] - sbi->s_session;
- sbi->s_anchor[0] = lastblock;
- sbi->s_anchor[1] = lastblock - 256;
- } else if (location == udf_variable_to_fixed(last[i]) - sbi->s_session) {
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- lastblock = udf_variable_to_fixed(last[i]) - sbi->s_session;
- sbi->s_anchor[0] = lastblock;
- sbi->s_anchor[1] = lastblock - 256 - sbi->s_session;
- } else {
- udf_debug("Anchor found at block %d, location mismatch %d.\n",
- last[i], location);
- }
- } else if (ident == TAG_IDENT_FE || ident == TAG_IDENT_EFE) {
- lastblock = last[i];
- sbi->s_anchor[3] = 512;
- } else {
- ident = location = 0;
- if (last[i] >= 256) {
- bh = sb_bread(sb, last[i] - 256);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(t->tagIdent);
- location = le32_to_cpu(t->tagLocation);
- brelse(bh);
- }
- }
-
- if (ident == TAG_IDENT_AVDP &&
- location == last[i] - 256 - sbi->s_session) {
- lastblock = last[i];
- sbi->s_anchor[1] = last[i] - 256;
- } else {
- ident = location = 0;
- if (last[i] >= 312 + sbi->s_session) {
- bh = sb_bread(sb, last[i] - 312 - sbi->s_session);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(t->tagIdent);
- location = le32_to_cpu(t->tagLocation);
- brelse(bh);
- }
- }
-
- if (ident == TAG_IDENT_AVDP &&
- location == udf_variable_to_fixed(last[i]) - 256) {
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- lastblock = udf_variable_to_fixed(last[i]);
- sbi->s_anchor[1] = lastblock - 256;
- }
- }
- }
- }
- }
-
- if (!lastblock) {
- /* We haven't found the lastblock. check 312 */
- bh = sb_bread(sb, 312 + sbi->s_session);
- if (bh) {
- tag *t = (tag *)bh->b_data;
- ident = le16_to_cpu(t->tagIdent);
- location = le32_to_cpu(t->tagLocation);
- brelse(bh);
-
- if (ident == TAG_IDENT_AVDP && location == 256)
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- }
- }
-
- for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
- if (sbi->s_anchor[i]) {
- bh = udf_read_tagged(sb, sbi->s_anchor[i],
- sbi->s_anchor[i], &ident);
- if (!bh)
- sbi->s_anchor[i] = 0;
- else {
- brelse(bh);
- if ((ident != TAG_IDENT_AVDP) &&
- (i || (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE)))
- sbi->s_anchor[i] = 0;
- }
- }
- }
-
- sbi->s_last_block = lastblock;
-}
-
static int udf_find_fileset(struct super_block *sb,
- kernel_lb_addr *fileset,
- kernel_lb_addr *root)
+ struct kernel_lb_addr *fileset,
+ struct kernel_lb_addr *root)
{
struct buffer_head *bh = NULL;
long lastblock;
if (fileset->logicalBlockNum != 0xFFFFFFFF ||
fileset->partitionReferenceNum != 0xFFFF) {
- bh = udf_read_ptagged(sb, *fileset, 0, &ident);
+ bh = udf_read_ptagged(sb, fileset, 0, &ident);
if (!bh) {
return 1;
sbi = UDF_SB(sb);
if (!bh) {
/* Search backwards through the partitions */
- kernel_lb_addr newfileset;
+ struct kernel_lb_addr newfileset;
/* --> cvg: FIXME - is it reasonable? */
return 1;
newfileset.logicalBlockNum = 0;
do {
- bh = udf_read_ptagged(sb, newfileset, 0,
+ bh = udf_read_ptagged(sb, &newfileset, 0,
&ident);
if (!bh) {
newfileset.logicalBlockNum++;
case TAG_IDENT_SBD:
{
struct spaceBitmapDesc *sp;
- sp = (struct spaceBitmapDesc *)bh->b_data;
+ sp = (struct spaceBitmapDesc *)
+ bh->b_data;
newfileset.logicalBlockNum += 1 +
((le32_to_cpu(sp->numOfBytes) +
- sizeof(struct spaceBitmapDesc) - 1)
- >> sb->s_blocksize_bits);
+ sizeof(struct spaceBitmapDesc)
+ - 1) >> sb->s_blocksize_bits);
brelse(bh);
break;
}
return 1;
}
-static void udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
+static int udf_load_pvoldesc(struct super_block *sb, sector_t block)
{
struct primaryVolDesc *pvoldesc;
- time_t recording;
- long recording_usec;
- struct ustr instr;
- struct ustr outstr;
+ struct ustr *instr, *outstr;
+ struct buffer_head *bh;
+ uint16_t ident;
+ int ret = 1;
+
+ instr = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!instr)
+ return 1;
+
+ outstr = kmalloc(sizeof(struct ustr), GFP_NOFS);
+ if (!outstr)
+ goto out1;
+
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ goto out2;
+
+ BUG_ON(ident != TAG_IDENT_PVD);
pvoldesc = (struct primaryVolDesc *)bh->b_data;
- if (udf_stamp_to_time(&recording, &recording_usec,
- lets_to_cpu(pvoldesc->recordingDateAndTime))) {
- kernel_timestamp ts;
- ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
- udf_debug("recording time %ld/%ld, %04u/%02u/%02u"
+ if (udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time,
+ pvoldesc->recordingDateAndTime)) {
+#ifdef UDFFS_DEBUG
+ struct timestamp *ts = &pvoldesc->recordingDateAndTime;
+ udf_debug("recording time %04u/%02u/%02u"
" %02u:%02u (%x)\n",
- recording, recording_usec,
- ts.year, ts.month, ts.day, ts.hour,
- ts.minute, ts.typeAndTimezone);
- UDF_SB(sb)->s_record_time.tv_sec = recording;
- UDF_SB(sb)->s_record_time.tv_nsec = recording_usec * 1000;
+ le16_to_cpu(ts->year), ts->month, ts->day, ts->hour,
+ ts->minute, le16_to_cpu(ts->typeAndTimezone));
+#endif
}
- if (!udf_build_ustr(&instr, pvoldesc->volIdent, 32)) {
- if (udf_CS0toUTF8(&outstr, &instr)) {
- strncpy(UDF_SB(sb)->s_volume_ident, outstr.u_name,
- outstr.u_len > 31 ? 31 : outstr.u_len);
- udf_debug("volIdent[] = '%s'\n", UDF_SB(sb)->s_volume_ident);
+ if (!udf_build_ustr(instr, pvoldesc->volIdent, 32))
+ if (udf_CS0toUTF8(outstr, instr)) {
+ strncpy(UDF_SB(sb)->s_volume_ident, outstr->u_name,
+ outstr->u_len > 31 ? 31 : outstr->u_len);
+ udf_debug("volIdent[] = '%s'\n",
+ UDF_SB(sb)->s_volume_ident);
}
+
+ if (!udf_build_ustr(instr, pvoldesc->volSetIdent, 128))
+ if (udf_CS0toUTF8(outstr, instr))
+ udf_debug("volSetIdent[] = '%s'\n", outstr->u_name);
+
+ brelse(bh);
+ ret = 0;
+out2:
+ kfree(outstr);
+out1:
+ kfree(instr);
+ return ret;
+}
+
+static int udf_load_metadata_files(struct super_block *sb, int partition)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map;
+ struct udf_meta_data *mdata;
+ struct kernel_lb_addr addr;
+ int fe_error = 0;
+
+ map = &sbi->s_partmaps[partition];
+ mdata = &map->s_type_specific.s_metadata;
+
+ /* metadata address */
+ addr.logicalBlockNum = mdata->s_meta_file_loc;
+ addr.partitionReferenceNum = map->s_partition_num;
+
+ udf_debug("Metadata file location: block = %d part = %d\n",
+ addr.logicalBlockNum, addr.partitionReferenceNum);
+
+ mdata->s_metadata_fe = udf_iget(sb, &addr);
+
+ if (mdata->s_metadata_fe == NULL) {
+ udf_warning(sb, __func__, "metadata inode efe not found, "
+ "will try mirror inode.");
+ fe_error = 1;
+ } else if (UDF_I(mdata->s_metadata_fe)->i_alloc_type !=
+ ICBTAG_FLAG_AD_SHORT) {
+ udf_warning(sb, __func__, "metadata inode efe does not have "
+ "short allocation descriptors!");
+ fe_error = 1;
+ iput(mdata->s_metadata_fe);
+ mdata->s_metadata_fe = NULL;
+ }
+
+ /* mirror file entry */
+ addr.logicalBlockNum = mdata->s_mirror_file_loc;
+ addr.partitionReferenceNum = map->s_partition_num;
+
+ udf_debug("Mirror metadata file location: block = %d part = %d\n",
+ addr.logicalBlockNum, addr.partitionReferenceNum);
+
+ mdata->s_mirror_fe = udf_iget(sb, &addr);
+
+ if (mdata->s_mirror_fe == NULL) {
+ if (fe_error) {
+ udf_error(sb, __func__, "mirror inode efe not found "
+ "and metadata inode is missing too, exiting...");
+ goto error_exit;
+ } else
+ udf_warning(sb, __func__, "mirror inode efe not found,"
+ " but metadata inode is OK");
+ } else if (UDF_I(mdata->s_mirror_fe)->i_alloc_type !=
+ ICBTAG_FLAG_AD_SHORT) {
+ udf_warning(sb, __func__, "mirror inode efe does not have "
+ "short allocation descriptors!");
+ iput(mdata->s_mirror_fe);
+ mdata->s_mirror_fe = NULL;
+ if (fe_error)
+ goto error_exit;
}
- if (!udf_build_ustr(&instr, pvoldesc->volSetIdent, 128)) {
- if (udf_CS0toUTF8(&outstr, &instr))
- udf_debug("volSetIdent[] = '%s'\n", outstr.u_name);
+ /*
+ * bitmap file entry
+ * Note:
+ * Load only if bitmap file location differs from 0xFFFFFFFF (DCN-5102)
+ */
+ if (mdata->s_bitmap_file_loc != 0xFFFFFFFF) {
+ addr.logicalBlockNum = mdata->s_bitmap_file_loc;
+ addr.partitionReferenceNum = map->s_partition_num;
+
+ udf_debug("Bitmap file location: block = %d part = %d\n",
+ addr.logicalBlockNum, addr.partitionReferenceNum);
+
+ mdata->s_bitmap_fe = udf_iget(sb, &addr);
+
+ if (mdata->s_bitmap_fe == NULL) {
+ if (sb->s_flags & MS_RDONLY)
+ udf_warning(sb, __func__, "bitmap inode efe "
+ "not found but it's ok since the disc"
+ " is mounted read-only");
+ else {
+ udf_error(sb, __func__, "bitmap inode efe not "
+ "found and attempted read-write mount");
+ goto error_exit;
+ }
+ }
}
+
+ udf_debug("udf_load_metadata_files Ok\n");
+
+ return 0;
+
+error_exit:
+ return 1;
}
static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
- kernel_lb_addr *root)
+ struct kernel_lb_addr *root)
{
struct fileSetDesc *fset;
root->logicalBlockNum, root->partitionReferenceNum);
}
-static int udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
+int udf_compute_nr_groups(struct super_block *sb, u32 partition)
+{
+ struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
+ return DIV_ROUND_UP(map->s_partition_len +
+ (sizeof(struct spaceBitmapDesc) << 3),
+ sb->s_blocksize * 8);
+}
+
+static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
+{
+ struct udf_bitmap *bitmap;
+ int nr_groups;
+ int size;
+
+ nr_groups = udf_compute_nr_groups(sb, index);
+ size = sizeof(struct udf_bitmap) +
+ (sizeof(struct buffer_head *) * nr_groups);
+
+ if (size <= PAGE_SIZE)
+ bitmap = kmalloc(size, GFP_KERNEL);
+ else
+ bitmap = vmalloc(size); /* TODO: get rid of vmalloc */
+
+ if (bitmap == NULL) {
+ udf_error(sb, __func__,
+ "Unable to allocate space for bitmap "
+ "and %d buffer_head pointers", nr_groups);
+ return NULL;
+ }
+
+ memset(bitmap, 0x00, size);
+ bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
+ bitmap->s_nr_groups = nr_groups;
+ return bitmap;
+}
+
+static int udf_fill_partdesc_info(struct super_block *sb,
+ struct partitionDesc *p, int p_index)
+{
+ struct udf_part_map *map;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct partitionHeaderDesc *phd;
+
+ map = &sbi->s_partmaps[p_index];
+
+ map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
+ map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
+
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_READ_ONLY))
+ map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_WRITE_ONCE))
+ map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_REWRITABLE))
+ map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
+ if (p->accessType == cpu_to_le32(PD_ACCESS_TYPE_OVERWRITABLE))
+ map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
+
+ udf_debug("Partition (%d type %x) starts at physical %d, "
+ "block length %d\n", p_index,
+ map->s_partition_type, map->s_partition_root,
+ map->s_partition_len);
+
+ if (strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR02) &&
+ strcmp(p->partitionContents.ident, PD_PARTITION_CONTENTS_NSR03))
+ return 0;
+
+ phd = (struct partitionHeaderDesc *)p->partitionContentsUse;
+ if (phd->unallocSpaceTable.extLength) {
+ struct kernel_lb_addr loc = {
+ .logicalBlockNum = le32_to_cpu(
+ phd->unallocSpaceTable.extPosition),
+ .partitionReferenceNum = p_index,
+ };
+
+ map->s_uspace.s_table = udf_iget(sb, &loc);
+ if (!map->s_uspace.s_table) {
+ udf_debug("cannot load unallocSpaceTable (part %d)\n",
+ p_index);
+ return 1;
+ }
+ map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE;
+ udf_debug("unallocSpaceTable (part %d) @ %ld\n",
+ p_index, map->s_uspace.s_table->i_ino);
+ }
+
+ if (phd->unallocSpaceBitmap.extLength) {
+ struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index);
+ if (!bitmap)
+ return 1;
+ map->s_uspace.s_bitmap = bitmap;
+ bitmap->s_extLength = le32_to_cpu(
+ phd->unallocSpaceBitmap.extLength);
+ bitmap->s_extPosition = le32_to_cpu(
+ phd->unallocSpaceBitmap.extPosition);
+ map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
+ udf_debug("unallocSpaceBitmap (part %d) @ %d\n", p_index,
+ bitmap->s_extPosition);
+ }
+
+ if (phd->partitionIntegrityTable.extLength)
+ udf_debug("partitionIntegrityTable (part %d)\n", p_index);
+
+ if (phd->freedSpaceTable.extLength) {
+ struct kernel_lb_addr loc = {
+ .logicalBlockNum = le32_to_cpu(
+ phd->freedSpaceTable.extPosition),
+ .partitionReferenceNum = p_index,
+ };
+
+ map->s_fspace.s_table = udf_iget(sb, &loc);
+ if (!map->s_fspace.s_table) {
+ udf_debug("cannot load freedSpaceTable (part %d)\n",
+ p_index);
+ return 1;
+ }
+
+ map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE;
+ udf_debug("freedSpaceTable (part %d) @ %ld\n",
+ p_index, map->s_fspace.s_table->i_ino);
+ }
+
+ if (phd->freedSpaceBitmap.extLength) {
+ struct udf_bitmap *bitmap = udf_sb_alloc_bitmap(sb, p_index);
+ if (!bitmap)
+ return 1;
+ map->s_fspace.s_bitmap = bitmap;
+ bitmap->s_extLength = le32_to_cpu(
+ phd->freedSpaceBitmap.extLength);
+ bitmap->s_extPosition = le32_to_cpu(
+ phd->freedSpaceBitmap.extPosition);
+ map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
+ udf_debug("freedSpaceBitmap (part %d) @ %d\n", p_index,
+ bitmap->s_extPosition);
+ }
+ return 0;
+}
+
+static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct udf_part_map *map = &sbi->s_partmaps[p_index];
+ struct kernel_lb_addr ino;
+ struct buffer_head *bh = NULL;
+ struct udf_inode_info *vati;
+ uint32_t pos;
+ struct virtualAllocationTable20 *vat20;
+ sector_t blocks = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+
+ /* VAT file entry is in the last recorded block */
+ ino.partitionReferenceNum = type1_index;
+ ino.logicalBlockNum = sbi->s_last_block - map->s_partition_root;
+ sbi->s_vat_inode = udf_iget(sb, &ino);
+ if (!sbi->s_vat_inode &&
+ sbi->s_last_block != blocks - 1) {
+ printk(KERN_NOTICE "UDF-fs: Failed to read VAT inode from the"
+ " last recorded block (%lu), retrying with the last "
+ "block of the device (%lu).\n",
+ (unsigned long)sbi->s_last_block,
+ (unsigned long)blocks - 1);
+ ino.partitionReferenceNum = type1_index;
+ ino.logicalBlockNum = blocks - 1 - map->s_partition_root;
+ sbi->s_vat_inode = udf_iget(sb, &ino);
+ }
+ if (!sbi->s_vat_inode)
+ return 1;
+
+ if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
+ map->s_type_specific.s_virtual.s_start_offset = 0;
+ map->s_type_specific.s_virtual.s_num_entries =
+ (sbi->s_vat_inode->i_size - 36) >> 2;
+ } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
+ vati = UDF_I(sbi->s_vat_inode);
+ if (vati->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
+ pos = udf_block_map(sbi->s_vat_inode, 0);
+ bh = sb_bread(sb, pos);
+ if (!bh)
+ return 1;
+ vat20 = (struct virtualAllocationTable20 *)bh->b_data;
+ } else {
+ vat20 = (struct virtualAllocationTable20 *)
+ vati->i_ext.i_data;
+ }
+
+ map->s_type_specific.s_virtual.s_start_offset =
+ le16_to_cpu(vat20->lengthHeader);
+ map->s_type_specific.s_virtual.s_num_entries =
+ (sbi->s_vat_inode->i_size -
+ map->s_type_specific.s_virtual.
+ s_start_offset) >> 2;
+ brelse(bh);
+ }
+ return 0;
+}
+
+static int udf_load_partdesc(struct super_block *sb, sector_t block)
+{
+ struct buffer_head *bh;
struct partitionDesc *p;
- int i;
struct udf_part_map *map;
- struct udf_sb_info *sbi;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ int i, type1_idx;
+ uint16_t partitionNumber;
+ uint16_t ident;
+ int ret = 0;
+
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return 1;
+ if (ident != TAG_IDENT_PD)
+ goto out_bh;
p = (struct partitionDesc *)bh->b_data;
- sbi = UDF_SB(sb);
+ partitionNumber = le16_to_cpu(p->partitionNumber);
+ /* First scan for TYPE1, SPARABLE and METADATA partitions */
for (i = 0; i < sbi->s_partitions; i++) {
map = &sbi->s_partmaps[i];
udf_debug("Searching map: (%d == %d)\n",
- map->s_partition_num, le16_to_cpu(p->partitionNumber));
- if (map->s_partition_num == le16_to_cpu(p->partitionNumber)) {
- map->s_partition_len = le32_to_cpu(p->partitionLength); /* blocks */
- map->s_partition_root = le32_to_cpu(p->partitionStartingLocation);
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_READ_ONLY)
- map->s_partition_flags |= UDF_PART_FLAG_READ_ONLY;
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_WRITE_ONCE)
- map->s_partition_flags |= UDF_PART_FLAG_WRITE_ONCE;
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_REWRITABLE)
- map->s_partition_flags |= UDF_PART_FLAG_REWRITABLE;
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_OVERWRITABLE)
- map->s_partition_flags |= UDF_PART_FLAG_OVERWRITABLE;
-
- if (!strcmp(p->partitionContents.ident,
- PD_PARTITION_CONTENTS_NSR02) ||
- !strcmp(p->partitionContents.ident,
- PD_PARTITION_CONTENTS_NSR03)) {
- struct partitionHeaderDesc *phd;
-
- phd = (struct partitionHeaderDesc *)(p->partitionContentsUse);
- if (phd->unallocSpaceTable.extLength) {
- kernel_lb_addr loc = {
- .logicalBlockNum = le32_to_cpu(phd->unallocSpaceTable.extPosition),
- .partitionReferenceNum = i,
- };
-
- map->s_uspace.s_table =
- udf_iget(sb, loc);
- if (!map->s_uspace.s_table) {
- udf_debug("cannot load unallocSpaceTable (part %d)\n", i);
- return 1;
- }
- map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE;
- udf_debug("unallocSpaceTable (part %d) @ %ld\n",
- i, map->s_uspace.s_table->i_ino);
- }
- if (phd->unallocSpaceBitmap.extLength) {
- UDF_SB_ALLOC_BITMAP(sb, i, s_uspace);
- if (map->s_uspace.s_bitmap != NULL) {
- map->s_uspace.s_bitmap->s_extLength =
- le32_to_cpu(phd->unallocSpaceBitmap.extLength);
- map->s_uspace.s_bitmap->s_extPosition =
- le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
- map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_BITMAP;
- udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
- i, map->s_uspace.s_bitmap->s_extPosition);
- }
- }
- if (phd->partitionIntegrityTable.extLength)
- udf_debug("partitionIntegrityTable (part %d)\n", i);
- if (phd->freedSpaceTable.extLength) {
- kernel_lb_addr loc = {
- .logicalBlockNum = le32_to_cpu(phd->freedSpaceTable.extPosition),
- .partitionReferenceNum = i,
- };
-
- map->s_fspace.s_table =
- udf_iget(sb, loc);
- if (!map->s_fspace.s_table) {
- udf_debug("cannot load freedSpaceTable (part %d)\n", i);
- return 1;
- }
- map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE;
- udf_debug("freedSpaceTable (part %d) @ %ld\n",
- i, map->s_fspace.s_table->i_ino);
- }
- if (phd->freedSpaceBitmap.extLength) {
- UDF_SB_ALLOC_BITMAP(sb, i, s_fspace);
- if (map->s_fspace.s_bitmap != NULL) {
- map->s_fspace.s_bitmap->s_extLength =
- le32_to_cpu(phd->freedSpaceBitmap.extLength);
- map->s_fspace.s_bitmap->s_extPosition =
- le32_to_cpu(phd->freedSpaceBitmap.extPosition);
- map->s_partition_flags |= UDF_PART_FLAG_FREED_BITMAP;
- udf_debug("freedSpaceBitmap (part %d) @ %d\n",
- i, map->s_fspace.s_bitmap->s_extPosition);
- }
- }
- }
+ map->s_partition_num, partitionNumber);
+ if (map->s_partition_num == partitionNumber &&
+ (map->s_partition_type == UDF_TYPE1_MAP15 ||
+ map->s_partition_type == UDF_SPARABLE_MAP15))
break;
- }
}
- if (i == sbi->s_partitions) {
+
+ if (i >= sbi->s_partitions) {
udf_debug("Partition (%d) not found in partition map\n",
- le16_to_cpu(p->partitionNumber));
+ partitionNumber);
+ goto out_bh;
+ }
+
+ ret = udf_fill_partdesc_info(sb, p, i);
+
+ /*
+ * Now rescan for VIRTUAL or METADATA partitions when SPARABLE and
+ * PHYSICAL partitions are already set up
+ */
+ type1_idx = i;
+ for (i = 0; i < sbi->s_partitions; i++) {
+ map = &sbi->s_partmaps[i];
+
+ if (map->s_partition_num == partitionNumber &&
+ (map->s_partition_type == UDF_VIRTUAL_MAP15 ||
+ map->s_partition_type == UDF_VIRTUAL_MAP20 ||
+ map->s_partition_type == UDF_METADATA_MAP25))
+ break;
+ }
+
+ if (i >= sbi->s_partitions)
+ goto out_bh;
+
+ ret = udf_fill_partdesc_info(sb, p, i);
+ if (ret)
+ goto out_bh;
+
+ if (map->s_partition_type == UDF_METADATA_MAP25) {
+ ret = udf_load_metadata_files(sb, i);
+ if (ret) {
+ printk(KERN_ERR "UDF-fs: error loading MetaData "
+ "partition map %d\n", i);
+ goto out_bh;
+ }
} else {
- udf_debug("Partition (%d:%d type %x) starts at physical %d, "
- "block length %d\n",
- le16_to_cpu(p->partitionNumber), i,
- map->s_partition_type,
- map->s_partition_root,
- map->s_partition_len);
+ ret = udf_load_vat(sb, i, type1_idx);
+ if (ret)
+ goto out_bh;
+ /*
+ * Mark filesystem read-only if we have a partition with
+ * virtual map since we don't handle writing to it (we
+ * overwrite blocks instead of relocating them).
+ */
+ sb->s_flags |= MS_RDONLY;
+ printk(KERN_NOTICE "UDF-fs: Filesystem marked read-only "
+ "because writing to pseudooverwrite partition is "
+ "not implemented.\n");
}
- return 0;
+out_bh:
+ /* In case loading failed, we handle cleanup in udf_fill_super */
+ brelse(bh);
+ return ret;
}
-static int udf_load_logicalvol(struct super_block *sb, struct buffer_head *bh,
- kernel_lb_addr *fileset)
+static int udf_load_logicalvol(struct super_block *sb, sector_t block,
+ struct kernel_lb_addr *fileset)
{
struct logicalVolDesc *lvd;
int i, j, offset;
uint8_t type;
struct udf_sb_info *sbi = UDF_SB(sb);
+ struct genericPartitionMap *gpm;
+ uint16_t ident;
+ struct buffer_head *bh;
+ int ret = 0;
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return 1;
+ BUG_ON(ident != TAG_IDENT_LVD);
lvd = (struct logicalVolDesc *)bh->b_data;
- UDF_SB_ALLOC_PARTMAPS(sb, le32_to_cpu(lvd->numPartitionMaps));
+ i = udf_sb_alloc_partition_maps(sb, le32_to_cpu(lvd->numPartitionMaps));
+ if (i != 0) {
+ ret = i;
+ goto out_bh;
+ }
for (i = 0, offset = 0;
i < sbi->s_partitions && offset < le32_to_cpu(lvd->mapTableLength);
- i++, offset += ((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapLength) {
- struct udf_part_map *map = &sbi->s_partmaps[i];
- type = ((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapType;
+ i++, offset += gpm->partitionMapLength) {
+ struct udf_part_map *map = &sbi->s_partmaps[i];
+ gpm = (struct genericPartitionMap *)
+ &(lvd->partitionMaps[offset]);
+ type = gpm->partitionMapType;
if (type == 1) {
- struct genericPartitionMap1 *gpm1 = (struct genericPartitionMap1 *)&(lvd->partitionMaps[offset]);
+ struct genericPartitionMap1 *gpm1 =
+ (struct genericPartitionMap1 *)gpm;
map->s_partition_type = UDF_TYPE1_MAP15;
map->s_volumeseqnum = le16_to_cpu(gpm1->volSeqNum);
map->s_partition_num = le16_to_cpu(gpm1->partitionNum);
map->s_partition_func = NULL;
} else if (type == 2) {
- struct udfPartitionMap2 *upm2 = (struct udfPartitionMap2 *)&(lvd->partitionMaps[offset]);
- if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL, strlen(UDF_ID_VIRTUAL))) {
- if (le16_to_cpu(((__le16 *)upm2->partIdent.identSuffix)[0]) == 0x0150) {
- map->s_partition_type = UDF_VIRTUAL_MAP15;
- map->s_partition_func = udf_get_pblock_virt15;
- } else if (le16_to_cpu(((__le16 *)upm2->partIdent.identSuffix)[0]) == 0x0200) {
- map->s_partition_type = UDF_VIRTUAL_MAP20;
- map->s_partition_func = udf_get_pblock_virt20;
+ struct udfPartitionMap2 *upm2 =
+ (struct udfPartitionMap2 *)gpm;
+ if (!strncmp(upm2->partIdent.ident, UDF_ID_VIRTUAL,
+ strlen(UDF_ID_VIRTUAL))) {
+ u16 suf =
+ le16_to_cpu(((__le16 *)upm2->partIdent.
+ identSuffix)[0]);
+ if (suf < 0x0200) {
+ map->s_partition_type =
+ UDF_VIRTUAL_MAP15;
+ map->s_partition_func =
+ udf_get_pblock_virt15;
+ } else {
+ map->s_partition_type =
+ UDF_VIRTUAL_MAP20;
+ map->s_partition_func =
+ udf_get_pblock_virt20;
}
- } else if (!strncmp(upm2->partIdent.ident, UDF_ID_SPARABLE, strlen(UDF_ID_SPARABLE))) {
+ } else if (!strncmp(upm2->partIdent.ident,
+ UDF_ID_SPARABLE,
+ strlen(UDF_ID_SPARABLE))) {
uint32_t loc;
- uint16_t ident;
struct sparingTable *st;
- struct sparablePartitionMap *spm = (struct sparablePartitionMap *)&(lvd->partitionMaps[offset]);
+ struct sparablePartitionMap *spm =
+ (struct sparablePartitionMap *)gpm;
map->s_partition_type = UDF_SPARABLE_MAP15;
- map->s_type_specific.s_sparing.s_packet_len = le16_to_cpu(spm->packetLength);
+ map->s_type_specific.s_sparing.s_packet_len =
+ le16_to_cpu(spm->packetLength);
for (j = 0; j < spm->numSparingTables; j++) {
- loc = le32_to_cpu(spm->locSparingTable[j]);
- map->s_type_specific.s_sparing.s_spar_map[j] =
- udf_read_tagged(sb, loc, loc, &ident);
- if (map->s_type_specific.s_sparing.s_spar_map[j] != NULL) {
- st = (struct sparingTable *)map->s_type_specific.s_sparing.s_spar_map[j]->b_data;
- if (ident != 0 ||
- strncmp(st->sparingIdent.ident, UDF_ID_SPARING, strlen(UDF_ID_SPARING))) {
- brelse(map->s_type_specific.s_sparing.s_spar_map[j]);
- map->s_type_specific.s_sparing.s_spar_map[j] = NULL;
- }
+ struct buffer_head *bh2;
+
+ loc = le32_to_cpu(
+ spm->locSparingTable[j]);
+ bh2 = udf_read_tagged(sb, loc, loc,
+ &ident);
+ map->s_type_specific.s_sparing.
+ s_spar_map[j] = bh2;
+
+ if (bh2 == NULL)
+ continue;
+
+ st = (struct sparingTable *)bh2->b_data;
+ if (ident != 0 || strncmp(
+ st->sparingIdent.ident,
+ UDF_ID_SPARING,
+ strlen(UDF_ID_SPARING))) {
+ brelse(bh2);
+ map->s_type_specific.s_sparing.
+ s_spar_map[j] = NULL;
}
}
map->s_partition_func = udf_get_pblock_spar15;
+ } else if (!strncmp(upm2->partIdent.ident,
+ UDF_ID_METADATA,
+ strlen(UDF_ID_METADATA))) {
+ struct udf_meta_data *mdata =
+ &map->s_type_specific.s_metadata;
+ struct metadataPartitionMap *mdm =
+ (struct metadataPartitionMap *)
+ &(lvd->partitionMaps[offset]);
+ udf_debug("Parsing Logical vol part %d "
+ "type %d id=%s\n", i, type,
+ UDF_ID_METADATA);
+
+ map->s_partition_type = UDF_METADATA_MAP25;
+ map->s_partition_func = udf_get_pblock_meta25;
+
+ mdata->s_meta_file_loc =
+ le32_to_cpu(mdm->metadataFileLoc);
+ mdata->s_mirror_file_loc =
+ le32_to_cpu(mdm->metadataMirrorFileLoc);
+ mdata->s_bitmap_file_loc =
+ le32_to_cpu(mdm->metadataBitmapFileLoc);
+ mdata->s_alloc_unit_size =
+ le32_to_cpu(mdm->allocUnitSize);
+ mdata->s_align_unit_size =
+ le16_to_cpu(mdm->alignUnitSize);
+ mdata->s_dup_md_flag =
+ mdm->flags & 0x01;
+
+ udf_debug("Metadata Ident suffix=0x%x\n",
+ (le16_to_cpu(
+ ((__le16 *)
+ mdm->partIdent.identSuffix)[0])));
+ udf_debug("Metadata part num=%d\n",
+ le16_to_cpu(mdm->partitionNum));
+ udf_debug("Metadata part alloc unit size=%d\n",
+ le32_to_cpu(mdm->allocUnitSize));
+ udf_debug("Metadata file loc=%d\n",
+ le32_to_cpu(mdm->metadataFileLoc));
+ udf_debug("Mirror file loc=%d\n",
+ le32_to_cpu(mdm->metadataMirrorFileLoc));
+ udf_debug("Bitmap file loc=%d\n",
+ le32_to_cpu(mdm->metadataBitmapFileLoc));
+ udf_debug("Duplicate Flag: %d %d\n",
+ mdata->s_dup_md_flag, mdm->flags);
} else {
udf_debug("Unknown ident: %s\n",
upm2->partIdent.ident);
}
if (fileset) {
- long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
+ struct long_ad *la = (struct long_ad *)&(lvd->logicalVolContentsUse[0]);
*fileset = lelb_to_cpu(la->extLocation);
udf_debug("FileSet found in LogicalVolDesc at block=%d, "
if (lvd->integritySeqExt.extLength)
udf_load_logicalvolint(sb, leea_to_cpu(lvd->integritySeqExt));
- return 0;
+out_bh:
+ brelse(bh);
+ return ret;
}
/*
* udf_load_logicalvolint
*
*/
-static void udf_load_logicalvolint(struct super_block *sb, kernel_extent_ad loc)
+static void udf_load_logicalvolint(struct super_block *sb, struct kernel_extent_ad loc)
{
struct buffer_head *bh = NULL;
uint16_t ident;
* July 1, 1997 - Andrew E. Mileski
* Written, tested, and released.
*/
-static int udf_process_sequence(struct super_block *sb, long block,
- long lastblock, kernel_lb_addr *fileset)
+static noinline int udf_process_sequence(struct super_block *sb, long block,
+ long lastblock, struct kernel_lb_addr *fileset)
{
struct buffer_head *bh = NULL;
struct udf_vds_record vds[VDS_POS_LENGTH];
+ struct udf_vds_record *curr;
struct generic_desc *gd;
struct volDescPtr *vdp;
int done = 0;
- int i, j;
uint32_t vdsn;
uint16_t ident;
long next_s = 0, next_e = 0;
memset(vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH);
- /* Read the main descriptor sequence */
+ /*
+ * Read the main descriptor sequence and find which descriptors
+ * are in it.
+ */
for (; (!done && block <= lastblock); block++) {
bh = udf_read_tagged(sb, block, block, &ident);
- if (!bh)
- break;
+ if (!bh) {
+ printk(KERN_ERR "udf: Block %Lu of volume descriptor "
+ "sequence is corrupted or we could not read "
+ "it.\n", (unsigned long long)block);
+ return 1;
+ }
/* Process each descriptor (ISO 13346 3/8.3-8.4) */
gd = (struct generic_desc *)bh->b_data;
vdsn = le32_to_cpu(gd->volDescSeqNum);
switch (ident) {
case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
- if (vdsn >= vds[VDS_POS_PRIMARY_VOL_DESC].volDescSeqNum) {
- vds[VDS_POS_PRIMARY_VOL_DESC].volDescSeqNum = vdsn;
- vds[VDS_POS_PRIMARY_VOL_DESC].block = block;
+ curr = &vds[VDS_POS_PRIMARY_VOL_DESC];
+ if (vdsn >= curr->volDescSeqNum) {
+ curr->volDescSeqNum = vdsn;
+ curr->block = block;
}
break;
case TAG_IDENT_VDP: /* ISO 13346 3/10.3 */
- if (vdsn >= vds[VDS_POS_VOL_DESC_PTR].volDescSeqNum) {
- vds[VDS_POS_VOL_DESC_PTR].volDescSeqNum = vdsn;
- vds[VDS_POS_VOL_DESC_PTR].block = block;
+ curr = &vds[VDS_POS_VOL_DESC_PTR];
+ if (vdsn >= curr->volDescSeqNum) {
+ curr->volDescSeqNum = vdsn;
+ curr->block = block;
vdp = (struct volDescPtr *)bh->b_data;
- next_s = le32_to_cpu(vdp->nextVolDescSeqExt.extLocation);
- next_e = le32_to_cpu(vdp->nextVolDescSeqExt.extLength);
+ next_s = le32_to_cpu(
+ vdp->nextVolDescSeqExt.extLocation);
+ next_e = le32_to_cpu(
+ vdp->nextVolDescSeqExt.extLength);
next_e = next_e >> sb->s_blocksize_bits;
next_e += next_s;
}
break;
case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
- if (vdsn >= vds[VDS_POS_IMP_USE_VOL_DESC].volDescSeqNum) {
- vds[VDS_POS_IMP_USE_VOL_DESC].volDescSeqNum = vdsn;
- vds[VDS_POS_IMP_USE_VOL_DESC].block = block;
+ curr = &vds[VDS_POS_IMP_USE_VOL_DESC];
+ if (vdsn >= curr->volDescSeqNum) {
+ curr->volDescSeqNum = vdsn;
+ curr->block = block;
}
break;
case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
- if (!vds[VDS_POS_PARTITION_DESC].block)
- vds[VDS_POS_PARTITION_DESC].block = block;
+ curr = &vds[VDS_POS_PARTITION_DESC];
+ if (!curr->block)
+ curr->block = block;
break;
case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
- if (vdsn >= vds[VDS_POS_LOGICAL_VOL_DESC].volDescSeqNum) {
- vds[VDS_POS_LOGICAL_VOL_DESC].volDescSeqNum = vdsn;
- vds[VDS_POS_LOGICAL_VOL_DESC].block = block;
+ curr = &vds[VDS_POS_LOGICAL_VOL_DESC];
+ if (vdsn >= curr->volDescSeqNum) {
+ curr->volDescSeqNum = vdsn;
+ curr->block = block;
}
break;
case TAG_IDENT_USD: /* ISO 13346 3/10.8 */
- if (vdsn >= vds[VDS_POS_UNALLOC_SPACE_DESC].volDescSeqNum) {
- vds[VDS_POS_UNALLOC_SPACE_DESC].volDescSeqNum = vdsn;
- vds[VDS_POS_UNALLOC_SPACE_DESC].block = block;
+ curr = &vds[VDS_POS_UNALLOC_SPACE_DESC];
+ if (vdsn >= curr->volDescSeqNum) {
+ curr->volDescSeqNum = vdsn;
+ curr->block = block;
}
break;
case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
block = next_s;
lastblock = next_e;
next_s = next_e = 0;
- } else {
+ } else
done = 1;
- }
break;
}
brelse(bh);
}
- for (i = 0; i < VDS_POS_LENGTH; i++) {
- if (vds[i].block) {
- bh = udf_read_tagged(sb, vds[i].block, vds[i].block,
- &ident);
-
- if (i == VDS_POS_PRIMARY_VOL_DESC) {
- udf_load_pvoldesc(sb, bh);
- } else if (i == VDS_POS_LOGICAL_VOL_DESC) {
- udf_load_logicalvol(sb, bh, fileset);
- } else if (i == VDS_POS_PARTITION_DESC) {
- struct buffer_head *bh2 = NULL;
- if (udf_load_partdesc(sb, bh)) {
- brelse(bh);
- return 1;
- }
- for (j = vds[i].block + 1;
- j < vds[VDS_POS_TERMINATING_DESC].block;
- j++) {
- bh2 = udf_read_tagged(sb, j, j, &ident);
- gd = (struct generic_desc *)bh2->b_data;
- if (ident == TAG_IDENT_PD)
- if (udf_load_partdesc(sb,
- bh2)) {
- brelse(bh);
- brelse(bh2);
- return 1;
- }
- brelse(bh2);
- }
- }
- brelse(bh);
- }
+ /*
+ * Now read interesting descriptors again and process them
+ * in a suitable order
+ */
+ if (!vds[VDS_POS_PRIMARY_VOL_DESC].block) {
+ printk(KERN_ERR "udf: Primary Volume Descriptor not found!\n");
+ return 1;
}
+ if (udf_load_pvoldesc(sb, vds[VDS_POS_PRIMARY_VOL_DESC].block))
+ return 1;
- return 0;
-}
-
-/*
- * udf_check_valid()
- */
-static int udf_check_valid(struct super_block *sb, int novrs, int silent)
-{
- long block;
+ if (vds[VDS_POS_LOGICAL_VOL_DESC].block && udf_load_logicalvol(sb,
+ vds[VDS_POS_LOGICAL_VOL_DESC].block, fileset))
+ return 1;
- if (novrs) {
- udf_debug("Validity check skipped because of novrs option\n");
- return 0;
- }
- /* Check that it is NSR02 compliant */
- /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
- else {
- block = udf_vrs(sb, silent);
- if (block == -1) {
- struct udf_sb_info *sbi = UDF_SB(sb);
- udf_debug("Failed to read byte 32768. Assuming open "
- "disc. Skipping validity check\n");
- if (!sbi->s_last_block)
- sbi->s_last_block = udf_get_last_block(sb);
- return 0;
- } else
- return !block;
+ if (vds[VDS_POS_PARTITION_DESC].block) {
+ /*
+ * We rescan the whole descriptor sequence to find
+ * partition descriptor blocks and process them.
+ */
+ for (block = vds[VDS_POS_PARTITION_DESC].block;
+ block < vds[VDS_POS_TERMINATING_DESC].block;
+ block++)
+ if (udf_load_partdesc(sb, block))
+ return 1;
}
+
+ return 0;
}
-static int udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
+static int udf_load_sequence(struct super_block *sb, struct buffer_head *bh,
+ struct kernel_lb_addr *fileset)
{
struct anchorVolDescPtr *anchor;
- uint16_t ident;
- struct buffer_head *bh;
long main_s, main_e, reserve_s, reserve_e;
- int i, j;
struct udf_sb_info *sbi;
- if (!sb)
- return 1;
sbi = UDF_SB(sb);
+ anchor = (struct anchorVolDescPtr *)bh->b_data;
+
+ /* Locate the main sequence */
+ main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
+ main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
+ main_e = main_e >> sb->s_blocksize_bits;
+ main_e += main_s;
+
+ /* Locate the reserve sequence */
+ reserve_s = le32_to_cpu(anchor->reserveVolDescSeqExt.extLocation);
+ reserve_e = le32_to_cpu(anchor->reserveVolDescSeqExt.extLength);
+ reserve_e = reserve_e >> sb->s_blocksize_bits;
+ reserve_e += reserve_s;
+
+ /* Process the main & reserve sequences */
+ /* responsible for finding the PartitionDesc(s) */
+ if (!udf_process_sequence(sb, main_s, main_e, fileset))
+ return 1;
+ return !udf_process_sequence(sb, reserve_s, reserve_e, fileset);
+}
- for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
- if (sbi->s_anchor[i] &&
- (bh = udf_read_tagged(sb, sbi->s_anchor[i],
- sbi->s_anchor[i], &ident))) {
- anchor = (struct anchorVolDescPtr *)bh->b_data;
+/*
+ * Check whether there is an anchor block in the given block and
+ * load Volume Descriptor Sequence if so.
+ */
+static int udf_check_anchor_block(struct super_block *sb, sector_t block,
+ struct kernel_lb_addr *fileset)
+{
+ struct buffer_head *bh;
+ uint16_t ident;
+ int ret;
- /* Locate the main sequence */
- main_s = le32_to_cpu(anchor->mainVolDescSeqExt.extLocation);
- main_e = le32_to_cpu(anchor->mainVolDescSeqExt.extLength);
- main_e = main_e >> sb->s_blocksize_bits;
- main_e += main_s;
+ if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) &&
+ udf_fixed_to_variable(block) >=
+ sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits)
+ return 0;
- /* Locate the reserve sequence */
- reserve_s = le32_to_cpu(anchor->reserveVolDescSeqExt.extLocation);
- reserve_e = le32_to_cpu(anchor->reserveVolDescSeqExt.extLength);
- reserve_e = reserve_e >> sb->s_blocksize_bits;
- reserve_e += reserve_s;
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return 0;
+ if (ident != TAG_IDENT_AVDP) {
+ brelse(bh);
+ return 0;
+ }
+ ret = udf_load_sequence(sb, bh, fileset);
+ brelse(bh);
+ return ret;
+}
- brelse(bh);
+/* Search for an anchor volume descriptor pointer */
+static sector_t udf_scan_anchors(struct super_block *sb, sector_t lastblock,
+ struct kernel_lb_addr *fileset)
+{
+ sector_t last[6];
+ int i;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ int last_count = 0;
- /* Process the main & reserve sequences */
- /* responsible for finding the PartitionDesc(s) */
- if (!(udf_process_sequence(sb, main_s, main_e, fileset) &&
- udf_process_sequence(sb, reserve_s, reserve_e, fileset)))
- break;
- }
+ /* First try user provided anchor */
+ if (sbi->s_anchor) {
+ if (udf_check_anchor_block(sb, sbi->s_anchor, fileset))
+ return lastblock;
+ }
+ /*
+ * according to spec, anchor is in either:
+ * block 256
+ * lastblock-256
+ * lastblock
+ * however, if the disc isn't closed, it could be 512.
+ */
+ if (udf_check_anchor_block(sb, sbi->s_session + 256, fileset))
+ return lastblock;
+ /*
+ * The trouble is which block is the last one. Drives often misreport
+ * this so we try various possibilities.
+ */
+ last[last_count++] = lastblock;
+ if (lastblock >= 1)
+ last[last_count++] = lastblock - 1;
+ last[last_count++] = lastblock + 1;
+ if (lastblock >= 2)
+ last[last_count++] = lastblock - 2;
+ if (lastblock >= 150)
+ last[last_count++] = lastblock - 150;
+ if (lastblock >= 152)
+ last[last_count++] = lastblock - 152;
+
+ for (i = 0; i < last_count; i++) {
+ if (last[i] >= sb->s_bdev->bd_inode->i_size >>
+ sb->s_blocksize_bits)
+ continue;
+ if (udf_check_anchor_block(sb, last[i], fileset))
+ return last[i];
+ if (last[i] < 256)
+ continue;
+ if (udf_check_anchor_block(sb, last[i] - 256, fileset))
+ return last[i];
}
- if (i == ARRAY_SIZE(sbi->s_anchor)) {
- udf_debug("No Anchor block found\n");
- return 1;
- } else
- udf_debug("Using anchor in block %d\n", sbi->s_anchor[i]);
+ /* Finally try block 512 in case media is open */
+ if (udf_check_anchor_block(sb, sbi->s_session + 512, fileset))
+ return last[0];
+ return 0;
+}
- for (i = 0; i < sbi->s_partitions; i++) {
- kernel_lb_addr uninitialized_var(ino);
- struct udf_part_map *map = &sbi->s_partmaps[i];
- switch (map->s_partition_type) {
- case UDF_VIRTUAL_MAP15:
- case UDF_VIRTUAL_MAP20:
- if (!sbi->s_last_block) {
- sbi->s_last_block = udf_get_last_block(sb);
- udf_find_anchor(sb);
- }
+/*
+ * Find an anchor volume descriptor and load Volume Descriptor Sequence from
+ * area specified by it. The function expects sbi->s_lastblock to be the last
+ * block on the media.
+ *
+ * Return 1 if ok, 0 if not found.
+ *
+ */
+static int udf_find_anchor(struct super_block *sb,
+ struct kernel_lb_addr *fileset)
+{
+ sector_t lastblock;
+ struct udf_sb_info *sbi = UDF_SB(sb);
- if (!sbi->s_last_block) {
- udf_debug("Unable to determine Lastblock (For "
- "Virtual Partition)\n");
- return 1;
- }
+ lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
+ if (lastblock)
+ goto out;
- for (j = 0; j < sbi->s_partitions; j++) {
- struct udf_part_map *map2 = &sbi->s_partmaps[j];
- if (j != i &&
- map->s_volumeseqnum == map2->s_volumeseqnum &&
- map->s_partition_num == map2->s_partition_num) {
- ino.partitionReferenceNum = j;
- ino.logicalBlockNum = sbi->s_last_block - map2->s_partition_root;
- break;
- }
- }
+ /* No anchor found? Try VARCONV conversion of block numbers */
+ UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
+ /* Firstly, we try to not convert number of the last block */
+ lastblock = udf_scan_anchors(sb,
+ udf_variable_to_fixed(sbi->s_last_block),
+ fileset);
+ if (lastblock)
+ goto out;
- if (j == sbi->s_partitions)
- return 1;
+ /* Secondly, we try with converted number of the last block */
+ lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
+ if (!lastblock) {
+ /* VARCONV didn't help. Clear it. */
+ UDF_CLEAR_FLAG(sb, UDF_FLAG_VARCONV);
+ return 0;
+ }
+out:
+ sbi->s_last_block = lastblock;
+ return 1;
+}
- sbi->s_vat_inode = udf_iget(sb, ino);
- if (!sbi->s_vat_inode)
- return 1;
+/*
+ * Check Volume Structure Descriptor, find Anchor block and load Volume
+ * Descriptor Sequence
+ */
+static int udf_load_vrs(struct super_block *sb, struct udf_options *uopt,
+ int silent, struct kernel_lb_addr *fileset)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ loff_t nsr_off;
- if (map->s_partition_type == UDF_VIRTUAL_MAP15) {
- map->s_type_specific.s_virtual.s_start_offset =
- udf_ext0_offset(sbi->s_vat_inode);
- map->s_type_specific.s_virtual.s_num_entries =
- (sbi->s_vat_inode->i_size - 36) >> 2;
- } else if (map->s_partition_type == UDF_VIRTUAL_MAP20) {
- struct buffer_head *bh = NULL;
- uint32_t pos;
-
- pos = udf_block_map(sbi->s_vat_inode, 0);
- bh = sb_bread(sb, pos);
- if (!bh)
- return 1;
- map->s_type_specific.s_virtual.s_start_offset =
- le16_to_cpu(((struct virtualAllocationTable20 *)bh->b_data +
- udf_ext0_offset(sbi->s_vat_inode))->lengthHeader) +
- udf_ext0_offset(sbi->s_vat_inode);
- map->s_type_specific.s_virtual.s_num_entries = (sbi->s_vat_inode->i_size -
- map->s_type_specific.s_virtual.s_start_offset) >> 2;
- brelse(bh);
- }
- map->s_partition_root = udf_get_pblock(sb, 0, i, 0);
- map->s_partition_len =
- sbi->s_partmaps[ino.partitionReferenceNum].
- s_partition_len;
+ if (!sb_set_blocksize(sb, uopt->blocksize)) {
+ if (!silent)
+ printk(KERN_WARNING "UDF-fs: Bad block size\n");
+ return 0;
+ }
+ sbi->s_last_block = uopt->lastblock;
+ if (!uopt->novrs) {
+ /* Check that it is NSR02 compliant */
+ nsr_off = udf_check_vsd(sb);
+ if (!nsr_off) {
+ if (!silent)
+ printk(KERN_WARNING "UDF-fs: No VRS found\n");
+ return 0;
}
+ if (nsr_off == -1)
+ udf_debug("Failed to read byte 32768. Assuming open "
+ "disc. Skipping validity check\n");
+ if (!sbi->s_last_block)
+ sbi->s_last_block = udf_get_last_block(sb);
+ } else {
+ udf_debug("Validity check skipped because of novrs option\n");
}
- return 0;
+
+ /* Look for anchor block and load Volume Descriptor Sequence */
+ sbi->s_anchor = uopt->anchor;
+ if (!udf_find_anchor(sb, fileset)) {
+ if (!silent)
+ printk(KERN_WARNING "UDF-fs: No anchor found\n");
+ return 0;
+ }
+ return 1;
}
static void udf_open_lvid(struct super_block *sb)
{
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
- if (bh) {
- int i;
- kernel_timestamp cpu_time;
- struct logicalVolIntegrityDesc *lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
- struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sbi);
-
- lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
- lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
- lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
-
- lvid->descTag.descCRC = cpu_to_le16(udf_crc((char *)lvid + sizeof(tag),
- le16_to_cpu(lvid->descTag.descCRCLength), 0));
-
- lvid->descTag.tagChecksum = 0;
- for (i = 0; i < 16; i++)
- if (i != 4)
- lvid->descTag.tagChecksum +=
- ((uint8_t *) &(lvid->descTag))[i];
-
- mark_buffer_dirty(bh);
- }
+ struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolIntegrityDescImpUse *lvidiu;
+
+ if (!bh)
+ return;
+ lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvidiu = udf_sb_lvidiu(sbi);
+
+ lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
+ lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
+ udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
+ CURRENT_TIME);
+ lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_OPEN);
+
+ lvid->descTag.descCRC = cpu_to_le16(
+ crc_itu_t(0, (char *)lvid + sizeof(struct tag),
+ le16_to_cpu(lvid->descTag.descCRCLength)));
+
+ lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
+ mark_buffer_dirty(bh);
+ sbi->s_lvid_dirty = 0;
}
static void udf_close_lvid(struct super_block *sb)
{
- kernel_timestamp cpu_time;
- int i;
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolIntegrityDescImpUse *lvidiu;
if (!bh)
return;
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvidiu = udf_sb_lvidiu(sbi);
+ lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
+ lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
+ udf_time_to_disk_stamp(&lvid->recordingDateAndTime, CURRENT_TIME);
+ if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
+ lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
+ if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
+ lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
+ if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
+ lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
+ lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
+
+ lvid->descTag.descCRC = cpu_to_le16(
+ crc_itu_t(0, (char *)lvid + sizeof(struct tag),
+ le16_to_cpu(lvid->descTag.descCRCLength)));
+
+ lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
+ mark_buffer_dirty(bh);
+ sbi->s_lvid_dirty = 0;
+}
- if (lvid->integrityType == LVID_INTEGRITY_TYPE_OPEN) {
- struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sbi);
- lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
- lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
- if (UDF_MAX_WRITE_VERSION > le16_to_cpu(lvidiu->maxUDFWriteRev))
- lvidiu->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
- if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFReadRev))
- lvidiu->minUDFReadRev = cpu_to_le16(sbi->s_udfrev);
- if (sbi->s_udfrev > le16_to_cpu(lvidiu->minUDFWriteRev))
- lvidiu->minUDFWriteRev = cpu_to_le16(sbi->s_udfrev);
- lvid->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
-
- lvid->descTag.descCRC =
- cpu_to_le16(udf_crc((char *)lvid + sizeof(tag),
- le16_to_cpu(lvid->descTag.descCRCLength), 0));
-
- lvid->descTag.tagChecksum = 0;
- for (i = 0; i < 16; i++)
- if (i != 4)
- lvid->descTag.tagChecksum +=
- ((uint8_t *)&(lvid->descTag))[i];
-
- mark_buffer_dirty(bh);
+static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
+{
+ int i;
+ int nr_groups = bitmap->s_nr_groups;
+ int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) *
+ nr_groups);
+
+ for (i = 0; i < nr_groups; i++)
+ if (bitmap->s_block_bitmap[i])
+ brelse(bitmap->s_block_bitmap[i]);
+
+ if (size <= PAGE_SIZE)
+ kfree(bitmap);
+ else
+ vfree(bitmap);
+}
+
+static void udf_free_partition(struct udf_part_map *map)
+{
+ int i;
+ struct udf_meta_data *mdata;
+
+ if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
+ iput(map->s_uspace.s_table);
+ if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
+ iput(map->s_fspace.s_table);
+ if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
+ udf_sb_free_bitmap(map->s_uspace.s_bitmap);
+ if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
+ udf_sb_free_bitmap(map->s_fspace.s_bitmap);
+ if (map->s_partition_type == UDF_SPARABLE_MAP15)
+ for (i = 0; i < 4; i++)
+ brelse(map->s_type_specific.s_sparing.s_spar_map[i]);
+ else if (map->s_partition_type == UDF_METADATA_MAP25) {
+ mdata = &map->s_type_specific.s_metadata;
+ iput(mdata->s_metadata_fe);
+ mdata->s_metadata_fe = NULL;
+
+ iput(mdata->s_mirror_fe);
+ mdata->s_mirror_fe = NULL;
+
+ iput(mdata->s_bitmap_fe);
+ mdata->s_bitmap_fe = NULL;
}
}
-/*
- * udf_read_super
- *
- * PURPOSE
- * Complete the specified super block.
- *
- * PRE-CONDITIONS
- * sb Pointer to superblock to complete - never NULL.
- * sb->s_dev Device to read suberblock from.
- * options Pointer to mount options.
- * silent Silent flag.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static int udf_fill_super(struct super_block *sb, void *options, int silent)
{
int i;
+ int ret;
struct inode *inode = NULL;
struct udf_options uopt;
- kernel_lb_addr rootdir, fileset;
+ struct kernel_lb_addr rootdir, fileset;
struct udf_sb_info *sbi;
uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
uopt.uid = -1;
uopt.gid = -1;
uopt.umask = 0;
+ uopt.fmode = UDF_INVALID_MODE;
+ uopt.dmode = UDF_INVALID_MODE;
sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
if (!sbi)
mutex_init(&sbi->s_alloc_mutex);
- if (!udf_parse_options((char *)options, &uopt))
+ if (!udf_parse_options((char *)options, &uopt, false))
goto error_out;
if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
sbi->s_uid = uopt.uid;
sbi->s_gid = uopt.gid;
sbi->s_umask = uopt.umask;
+ sbi->s_fmode = uopt.fmode;
+ sbi->s_dmode = uopt.dmode;
sbi->s_nls_map = uopt.nls_map;
- /* Set the block size for all transfers */
- if (!udf_set_blocksize(sb, uopt.blocksize))
- goto error_out;
-
if (uopt.session == 0xFFFFFFFF)
sbi->s_session = udf_get_last_session(sb);
else
udf_debug("Multi-session=%d\n", sbi->s_session);
- sbi->s_last_block = uopt.lastblock;
- sbi->s_anchor[0] = sbi->s_anchor[1] = 0;
- sbi->s_anchor[2] = uopt.anchor;
- sbi->s_anchor[3] = 256;
-
- if (udf_check_valid(sb, uopt.novrs, silent)) {
- /* read volume recognition sequences */
- printk(KERN_WARNING "UDF-fs: No VRS found\n");
- goto error_out;
- }
-
- udf_find_anchor(sb);
-
/* Fill in the rest of the superblock */
sb->s_op = &udf_sb_ops;
+ sb->s_export_op = &udf_export_ops;
sb->dq_op = NULL;
sb->s_dirt = 0;
sb->s_magic = UDF_SUPER_MAGIC;
sb->s_time_gran = 1000;
- if (udf_load_partition(sb, &fileset)) {
+ if (uopt.flags & (1 << UDF_FLAG_BLOCKSIZE_SET)) {
+ ret = udf_load_vrs(sb, &uopt, silent, &fileset);
+ } else {
+ uopt.blocksize = bdev_logical_block_size(sb->s_bdev);
+ ret = udf_load_vrs(sb, &uopt, silent, &fileset);
+ if (!ret && uopt.blocksize != UDF_DEFAULT_BLOCKSIZE) {
+ if (!silent)
+ printk(KERN_NOTICE
+ "UDF-fs: Rescanning with blocksize "
+ "%d\n", UDF_DEFAULT_BLOCKSIZE);
+ uopt.blocksize = UDF_DEFAULT_BLOCKSIZE;
+ ret = udf_load_vrs(sb, &uopt, silent, &fileset);
+ }
+ }
+ if (!ret) {
printk(KERN_WARNING "UDF-fs: No partition found (1)\n");
goto error_out;
}
udf_debug("Lastblock=%d\n", sbi->s_last_block);
if (sbi->s_lvid_bh) {
- struct logicalVolIntegrityDescImpUse *lvidiu = udf_sb_lvidiu(sbi);
+ struct logicalVolIntegrityDescImpUse *lvidiu =
+ udf_sb_lvidiu(sbi);
uint16_t minUDFReadRev = le16_to_cpu(lvidiu->minUDFReadRev);
uint16_t minUDFWriteRev = le16_to_cpu(lvidiu->minUDFWriteRev);
- /* uint16_t maxUDFWriteRev = le16_to_cpu(lvidiu->maxUDFWriteRev); */
+ /* uint16_t maxUDFWriteRev =
+ le16_to_cpu(lvidiu->maxUDFWriteRev); */
if (minUDFReadRev > UDF_MAX_READ_VERSION) {
- printk(KERN_ERR "UDF-fs: minUDFReadRev=%x (max is %x)\n",
+ printk(KERN_ERR "UDF-fs: minUDFReadRev=%x "
+ "(max is %x)\n",
le16_to_cpu(lvidiu->minUDFReadRev),
UDF_MAX_READ_VERSION);
goto error_out;
- } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION) {
+ } else if (minUDFWriteRev > UDF_MAX_WRITE_VERSION)
sb->s_flags |= MS_RDONLY;
- }
sbi->s_udfrev = minUDFWriteRev;
goto error_out;
}
- if (sbi->s_partmaps[sbi->s_partition].s_partition_flags & UDF_PART_FLAG_READ_ONLY) {
- printk(KERN_NOTICE "UDF-fs: Partition marked readonly; forcing readonly mount\n");
+ if (sbi->s_partmaps[sbi->s_partition].s_partition_flags &
+ UDF_PART_FLAG_READ_ONLY) {
+ printk(KERN_NOTICE "UDF-fs: Partition marked readonly; "
+ "forcing readonly mount\n");
sb->s_flags |= MS_RDONLY;
}
}
if (!silent) {
- kernel_timestamp ts;
- udf_time_to_stamp(&ts, sbi->s_record_time);
- udf_info("UDF %s (%s) Mounting volume '%s', "
+ struct timestamp ts;
+ udf_time_to_disk_stamp(&ts, sbi->s_record_time);
+ udf_info("UDF: Mounting volume '%s', "
"timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
- UDFFS_VERSION, UDFFS_DATE,
- sbi->s_volume_ident, ts.year, ts.month, ts.day,
- ts.hour, ts.minute, ts.typeAndTimezone);
+ sbi->s_volume_ident, le16_to_cpu(ts.year), ts.month, ts.day,
+ ts.hour, ts.minute, le16_to_cpu(ts.typeAndTimezone));
}
if (!(sb->s_flags & MS_RDONLY))
udf_open_lvid(sb);
/* Assign the root inode */
/* assign inodes by physical block number */
/* perhaps it's not extensible enough, but for now ... */
- inode = udf_iget(sb, rootdir);
+ inode = udf_iget(sb, &rootdir);
if (!inode) {
- printk(KERN_ERR "UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
+ printk(KERN_ERR "UDF-fs: Error in udf_iget, block=%d, "
+ "partition=%d\n",
rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
goto error_out;
}
error_out:
if (sbi->s_vat_inode)
iput(sbi->s_vat_inode);
- if (sbi->s_partitions) {
- struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
- iput(map->s_uspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
- iput(map->s_fspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
- UDF_SB_FREE_BITMAP(sb, sbi->s_partition, s_uspace);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
- UDF_SB_FREE_BITMAP(sb, sbi->s_partition, s_fspace);
- if (map->s_partition_type == UDF_SPARABLE_MAP15)
- for (i = 0; i < 4; i++)
- brelse(map->s_type_specific.s_sparing.s_spar_map[i]);
- }
+ if (sbi->s_partitions)
+ for (i = 0; i < sbi->s_partitions; i++)
+ udf_free_partition(&sbi->s_partmaps[i]);
#ifdef CONFIG_UDF_NLS
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
unload_nls(sbi->s_nls_map);
return -EINVAL;
}
-void udf_error(struct super_block *sb, const char *function,
- const char *fmt, ...)
+static void udf_error(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
va_list args;
sb->s_id, function, error_buf);
}
-/*
- * udf_put_super
- *
- * PURPOSE
- * Prepare for destruction of the superblock.
- *
- * DESCRIPTION
- * Called before the filesystem is unmounted.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static void udf_put_super(struct super_block *sb)
{
int i;
struct udf_sb_info *sbi;
sbi = UDF_SB(sb);
+
+ lock_kernel();
+
if (sbi->s_vat_inode)
iput(sbi->s_vat_inode);
- if (sbi->s_partitions) {
- struct udf_part_map *map = &sbi->s_partmaps[sbi->s_partition];
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE)
- iput(map->s_uspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE)
- iput(map->s_fspace.s_table);
- if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP)
- UDF_SB_FREE_BITMAP(sb, sbi->s_partition, s_uspace);
- if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP)
- UDF_SB_FREE_BITMAP(sb, sbi->s_partition, s_fspace);
- if (map->s_partition_type == UDF_SPARABLE_MAP15)
- for (i = 0; i < 4; i++)
- brelse(map->s_type_specific.s_sparing.s_spar_map[i]);
- }
+ if (sbi->s_partitions)
+ for (i = 0; i < sbi->s_partitions; i++)
+ udf_free_partition(&sbi->s_partmaps[i]);
#ifdef CONFIG_UDF_NLS
if (UDF_QUERY_FLAG(sb, UDF_FLAG_NLS_MAP))
unload_nls(sbi->s_nls_map);
kfree(sbi->s_partmaps);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
+
+ unlock_kernel();
+}
+
+static int udf_sync_fs(struct super_block *sb, int wait)
+{
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ mutex_lock(&sbi->s_alloc_mutex);
+ if (sbi->s_lvid_dirty) {
+ /*
+ * Blockdevice will be synced later so we don't have to submit
+ * the buffer for IO
+ */
+ mark_buffer_dirty(sbi->s_lvid_bh);
+ sb->s_dirt = 0;
+ sbi->s_lvid_dirty = 0;
+ }
+ mutex_unlock(&sbi->s_alloc_mutex);
+
+ return 0;
}
-/*
- * udf_stat_fs
- *
- * PURPOSE
- * Return info about the filesystem.
- *
- * DESCRIPTION
- * Called by sys_statfs()
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct udf_sb_info *sbi = UDF_SB(sb);
struct logicalVolIntegrityDescImpUse *lvidiu;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
if (sbi->s_lvid_bh != NULL)
lvidiu = udf_sb_lvidiu(sbi);
le32_to_cpu(lvidiu->numDirs)) : 0)
+ buf->f_bfree;
buf->f_ffree = buf->f_bfree;
- /* __kernel_fsid_t f_fsid */
buf->f_namelen = UDF_NAME_LEN - 2;
+ buf->f_fsid.val[0] = (u32)id;
+ buf->f_fsid.val[1] = (u32)(id >> 32);
return 0;
}
-static unsigned char udf_bitmap_lookup[16] = {
- 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
-};
-
-static unsigned int udf_count_free_bitmap(struct super_block *sb, struct udf_bitmap *bitmap)
+static unsigned int udf_count_free_bitmap(struct super_block *sb,
+ struct udf_bitmap *bitmap)
{
struct buffer_head *bh = NULL;
unsigned int accum = 0;
int index;
int block = 0, newblock;
- kernel_lb_addr loc;
+ struct kernel_lb_addr loc;
uint32_t bytes;
- uint8_t value;
uint8_t *ptr;
uint16_t ident;
struct spaceBitmapDesc *bm;
loc.logicalBlockNum = bitmap->s_extPosition;
loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
- bh = udf_read_ptagged(sb, loc, 0, &ident);
+ bh = udf_read_ptagged(sb, &loc, 0, &ident);
if (!bh) {
printk(KERN_ERR "udf: udf_count_free failed\n");
ptr = (uint8_t *)bh->b_data;
while (bytes > 0) {
- while ((bytes > 0) && (index < sb->s_blocksize)) {
- value = ptr[index];
- accum += udf_bitmap_lookup[value & 0x0f];
- accum += udf_bitmap_lookup[value >> 4];
- index++;
- bytes--;
- }
+ u32 cur_bytes = min_t(u32, bytes, sb->s_blocksize - index);
+ accum += bitmap_weight((const unsigned long *)(ptr + index),
+ cur_bytes * 8);
+ bytes -= cur_bytes;
if (bytes) {
brelse(bh);
- newblock = udf_get_lb_pblock(sb, loc, ++block);
+ newblock = udf_get_lb_pblock(sb, &loc, ++block);
bh = udf_tread(sb, newblock);
if (!bh) {
udf_debug("read failed\n");
return accum;
}
-static unsigned int udf_count_free_table(struct super_block *sb, struct inode *table)
+static unsigned int udf_count_free_table(struct super_block *sb,
+ struct inode *table)
{
unsigned int accum = 0;
uint32_t elen;
- kernel_lb_addr eloc;
+ struct kernel_lb_addr eloc;
int8_t etype;
struct extent_position epos;
lock_kernel();
- epos.block = UDF_I_LOCATION(table);
+ epos.block = UDF_I(table)->i_location;
epos.offset = sizeof(struct unallocSpaceEntry);
epos.bh = NULL;
sbi = UDF_SB(sb);
if (sbi->s_lvid_bh) {
- struct logicalVolIntegrityDesc *lvid = (struct logicalVolIntegrityDesc *)sbi->s_lvid_bh->b_data;
+ struct logicalVolIntegrityDesc *lvid =
+ (struct logicalVolIntegrityDesc *)
+ sbi->s_lvid_bh->b_data;
if (le32_to_cpu(lvid->numOfPartitions) > sbi->s_partition) {
- accum = le32_to_cpu(lvid->freeSpaceTable[sbi->s_partition]);
+ accum = le32_to_cpu(
+ lvid->freeSpaceTable[sbi->s_partition]);
if (accum == 0xFFFFFFFF)
accum = 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff