* 10/17/98 added freespace count for "df"
* 11/11/98 gr added novrs option
* 11/26/98 dgb added fileset,anchor mount options
- * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced vol descs
- * rewrote option handling based on isofs
+ * 12/06/98 blf really hosed things royally. vat/sparing support. sequenced
+ * vol descs. rewrote option handling based on isofs
* 12/20/98 find the free space bitmap (if it exists)
*/
-#include "udfdecl.h"
+#include "udfdecl.h"
#include <linux/blkdev.h>
#include <linux/slab.h>
#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_fileset(struct super_block *, struct buffer_head *, kernel_lb_addr *);
-static void udf_load_partdesc(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 *,
+ 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;
+ __u32 number_of_partitions = le32_to_cpu(lvid->numOfPartitions);
+ __u32 offset = number_of_partitions * 2 *
+ sizeof(uint32_t)/sizeof(uint8_t);
+ return (struct logicalVolIntegrityDescImpUse *)&(lvid->impUse[offset]);
+}
/* UDF filesystem type */
static int udf_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+ int flags, const char *dev_name, void *data,
+ struct vfsmount *mnt)
{
return get_sb_bdev(fs_type, flags, dev_name, data, udf_fill_super, mnt);
}
.fs_flags = FS_REQUIRES_DEV,
};
-static kmem_cache_t * udf_inode_cachep;
+static struct kmem_cache *udf_inode_cachep;
static struct inode *udf_alloc_inode(struct super_block *sb)
{
struct udf_inode_info *ei;
- ei = (struct udf_inode_info *)kmem_cache_alloc(udf_inode_cachep, SLAB_KERNEL);
+ ei = kmem_cache_alloc(udf_inode_cachep, GFP_KERNEL);
if (!ei)
return NULL;
kmem_cache_free(udf_inode_cachep, UDF_I(inode));
}
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void *foo)
{
- struct udf_inode_info *ei = (struct udf_inode_info *) foo;
+ struct udf_inode_info *ei = (struct udf_inode_info *)foo;
- if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
- SLAB_CTOR_CONSTRUCTOR)
- {
- ei->i_ext.i_data = NULL;
- inode_init_once(&ei->vfs_inode);
- }
+ ei->i_ext.i_data = NULL;
+ inode_init_once(&ei->vfs_inode);
}
static int init_inodecache(void)
{
udf_inode_cachep = kmem_cache_create("udf_inode_cache",
sizeof(struct udf_inode_info),
- 0, (SLAB_RECLAIM_ACCOUNT|
- SLAB_MEM_SPREAD),
- init_once, NULL);
- if (udf_inode_cachep == NULL)
+ 0, (SLAB_RECLAIM_ACCOUNT |
+ SLAB_MEM_SPREAD),
+ init_once);
+ if (!udf_inode_cachep)
return -ENOMEM;
return 0;
}
}
/* Superblock operations */
-static struct super_operations udf_sb_ops = {
- .alloc_inode = udf_alloc_inode,
- .destroy_inode = udf_destroy_inode,
- .write_inode = udf_write_inode,
- .delete_inode = udf_delete_inode,
- .clear_inode = udf_clear_inode,
- .put_super = udf_put_super,
- .write_super = udf_write_super,
- .statfs = udf_statfs,
- .remount_fs = udf_remount_fs,
+static const struct super_operations udf_sb_ops = {
+ .alloc_inode = udf_alloc_inode,
+ .destroy_inode = udf_destroy_inode,
+ .write_inode = udf_write_inode,
+ .delete_inode = udf_delete_inode,
+ .clear_inode = udf_clear_inode,
+ .put_super = udf_put_super,
+ .sync_fs = udf_sync_fs,
+ .statfs = udf_statfs,
+ .remount_fs = udf_remount_fs,
+ .show_options = udf_show_options,
};
-struct udf_options
-{
+struct udf_options {
unsigned char novrs;
unsigned int blocksize;
unsigned int session;
mode_t umask;
gid_t gid;
uid_t uid;
+ mode_t fmode;
+ mode_t dmode;
struct nls_table *nls_map;
};
static int __init init_udf_fs(void)
{
int err;
+
err = init_inodecache();
if (err)
goto out1;
err = register_filesystem(&udf_fstype);
if (err)
goto out;
+
return 0;
+
out:
destroy_inodecache();
+
out1:
return err;
}
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.
*
* The remaining are for debugging and disaster recovery:
*
- * novrs Skip volume sequence recognition
+ * novrs Skip volume sequence recognition
*
* The following expect a offset from 0.
*
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 = {
- {Opt_novrs, "novrs"},
- {Opt_nostrict, "nostrict"},
- {Opt_bs, "bs=%u"},
- {Opt_unhide, "unhide"},
- {Opt_undelete, "undelete"},
- {Opt_noadinicb, "noadinicb"},
- {Opt_adinicb, "adinicb"},
- {Opt_shortad, "shortad"},
- {Opt_longad, "longad"},
- {Opt_uforget, "uid=forget"},
- {Opt_uignore, "uid=ignore"},
- {Opt_gforget, "gid=forget"},
- {Opt_gignore, "gid=ignore"},
- {Opt_gid, "gid=%u"},
- {Opt_uid, "uid=%u"},
- {Opt_umask, "umask=%o"},
- {Opt_session, "session=%u"},
- {Opt_lastblock, "lastblock=%u"},
- {Opt_anchor, "anchor=%u"},
- {Opt_volume, "volume=%u"},
- {Opt_partition, "partition=%u"},
- {Opt_fileset, "fileset=%u"},
- {Opt_rootdir, "rootdir=%u"},
- {Opt_utf8, "utf8"},
- {Opt_iocharset, "iocharset=%s"},
- {Opt_err, NULL}
+static const match_table_t tokens = {
+ {Opt_novrs, "novrs"},
+ {Opt_nostrict, "nostrict"},
+ {Opt_bs, "bs=%u"},
+ {Opt_unhide, "unhide"},
+ {Opt_undelete, "undelete"},
+ {Opt_noadinicb, "noadinicb"},
+ {Opt_adinicb, "adinicb"},
+ {Opt_shortad, "shortad"},
+ {Opt_longad, "longad"},
+ {Opt_uforget, "uid=forget"},
+ {Opt_uignore, "uid=ignore"},
+ {Opt_gforget, "gid=forget"},
+ {Opt_gignore, "gid=ignore"},
+ {Opt_gid, "gid=%u"},
+ {Opt_uid, "uid=%u"},
+ {Opt_umask, "umask=%o"},
+ {Opt_session, "session=%u"},
+ {Opt_lastblock, "lastblock=%u"},
+ {Opt_anchor, "anchor=%u"},
+ {Opt_volume, "volume=%u"},
+ {Opt_partition, "partition=%u"},
+ {Opt_fileset, "fileset=%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;
if (!options)
return 1;
- while ((p = strsep(&options, ",")) != NULL)
- {
+ while ((p = strsep(&options, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
int token;
if (!*p)
continue;
token = match_token(p, tokens, args);
- switch (token)
- {
- case Opt_novrs:
- uopt->novrs = 1;
- case Opt_bs:
- if (match_int(&args[0], &option))
- return 0;
- uopt->blocksize = option;
- break;
- case Opt_unhide:
- uopt->flags |= (1 << UDF_FLAG_UNHIDE);
- break;
- case Opt_undelete:
- uopt->flags |= (1 << UDF_FLAG_UNDELETE);
- break;
- case Opt_noadinicb:
- uopt->flags &= ~(1 << UDF_FLAG_USE_AD_IN_ICB);
- break;
- case Opt_adinicb:
- uopt->flags |= (1 << UDF_FLAG_USE_AD_IN_ICB);
- break;
- case Opt_shortad:
- uopt->flags |= (1 << UDF_FLAG_USE_SHORT_AD);
- break;
- case Opt_longad:
- uopt->flags &= ~(1 << UDF_FLAG_USE_SHORT_AD);
- break;
- case Opt_gid:
- if (match_int(args, &option))
- return 0;
- uopt->gid = option;
- break;
- case Opt_uid:
- if (match_int(args, &option))
- return 0;
- uopt->uid = option;
- break;
- case Opt_umask:
- if (match_octal(args, &option))
- return 0;
- uopt->umask = option;
- break;
- case Opt_nostrict:
- uopt->flags &= ~(1 << UDF_FLAG_STRICT);
- break;
- case Opt_session:
- if (match_int(args, &option))
- return 0;
- uopt->session = option;
- break;
- case Opt_lastblock:
- if (match_int(args, &option))
- return 0;
- uopt->lastblock = option;
- break;
- case Opt_anchor:
- if (match_int(args, &option))
- return 0;
- uopt->anchor = option;
- break;
- case Opt_volume:
- if (match_int(args, &option))
- return 0;
- uopt->volume = option;
- break;
- case Opt_partition:
- if (match_int(args, &option))
- return 0;
- uopt->partition = option;
- break;
- case Opt_fileset:
- if (match_int(args, &option))
- return 0;
- uopt->fileset = option;
- break;
- case Opt_rootdir:
- if (match_int(args, &option))
- return 0;
- uopt->rootdir = option;
- break;
- case Opt_utf8:
- uopt->flags |= (1 << UDF_FLAG_UTF8);
- break;
+ 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);
+ break;
+ case Opt_undelete:
+ uopt->flags |= (1 << UDF_FLAG_UNDELETE);
+ break;
+ case Opt_noadinicb:
+ uopt->flags &= ~(1 << UDF_FLAG_USE_AD_IN_ICB);
+ break;
+ case Opt_adinicb:
+ uopt->flags |= (1 << UDF_FLAG_USE_AD_IN_ICB);
+ break;
+ case Opt_shortad:
+ uopt->flags |= (1 << UDF_FLAG_USE_SHORT_AD);
+ break;
+ case Opt_longad:
+ uopt->flags &= ~(1 << UDF_FLAG_USE_SHORT_AD);
+ break;
+ case Opt_gid:
+ if (match_int(args, &option))
+ return 0;
+ uopt->gid = option;
+ uopt->flags |= (1 << UDF_FLAG_GID_SET);
+ break;
+ case Opt_uid:
+ if (match_int(args, &option))
+ return 0;
+ uopt->uid = option;
+ uopt->flags |= (1 << UDF_FLAG_UID_SET);
+ break;
+ case Opt_umask:
+ if (match_octal(args, &option))
+ return 0;
+ uopt->umask = option;
+ break;
+ case Opt_nostrict:
+ uopt->flags &= ~(1 << UDF_FLAG_STRICT);
+ break;
+ case Opt_session:
+ 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))
+ return 0;
+ uopt->anchor = option;
+ break;
+ case Opt_volume:
+ if (match_int(args, &option))
+ return 0;
+ uopt->volume = option;
+ break;
+ case Opt_partition:
+ if (match_int(args, &option))
+ return 0;
+ uopt->partition = option;
+ break;
+ case Opt_fileset:
+ if (match_int(args, &option))
+ return 0;
+ uopt->fileset = option;
+ break;
+ case Opt_rootdir:
+ if (match_int(args, &option))
+ return 0;
+ uopt->rootdir = option;
+ break;
+ case Opt_utf8:
+ uopt->flags |= (1 << UDF_FLAG_UTF8);
+ break;
#ifdef CONFIG_UDF_NLS
- case Opt_iocharset:
- uopt->nls_map = load_nls(args[0].from);
- uopt->flags |= (1 << UDF_FLAG_NLS_MAP);
- break;
+ case Opt_iocharset:
+ uopt->nls_map = load_nls(args[0].from);
+ uopt->flags |= (1 << UDF_FLAG_NLS_MAP);
+ break;
#endif
- case Opt_uignore:
- uopt->flags |= (1 << UDF_FLAG_UID_IGNORE);
- break;
- case Opt_uforget:
- uopt->flags |= (1 << UDF_FLAG_UID_FORGET);
- break;
- case Opt_gignore:
- uopt->flags |= (1 << UDF_FLAG_GID_IGNORE);
- break;
- case Opt_gforget:
- uopt->flags |= (1 << UDF_FLAG_GID_FORGET);
- break;
- default:
- printk(KERN_ERR "udf: bad mount option \"%s\" "
- "or missing value\n", p);
+ case Opt_uignore:
+ uopt->flags |= (1 << UDF_FLAG_UID_IGNORE);
+ break;
+ case Opt_uforget:
+ uopt->flags |= (1 << UDF_FLAG_UID_FORGET);
+ break;
+ case Opt_gignore:
+ uopt->flags |= (1 << UDF_FLAG_GID_IGNORE);
+ break;
+ 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 0;
}
}
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)
+static int udf_remount_fs(struct super_block *sb, int *flags, char *options)
{
struct udf_options uopt;
+ struct udf_sb_info *sbi = UDF_SB(sb);
- uopt.flags = UDF_SB(sb)->s_flags ;
- uopt.uid = UDF_SB(sb)->s_uid ;
- uopt.gid = UDF_SB(sb)->s_gid ;
- uopt.umask = UDF_SB(sb)->s_umask ;
+ uopt.flags = sbi->s_flags;
+ 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;
- UDF_SB(sb)->s_flags = uopt.flags;
- UDF_SB(sb)->s_uid = uopt.uid;
- UDF_SB(sb)->s_gid = uopt.gid;
- UDF_SB(sb)->s_umask = uopt.umask;
-
- if (UDF_SB_LVIDBH(sb)) {
- int write_rev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
+ 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);
if (write_rev > UDF_MAX_WRITE_VERSION)
*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;
-
- /* Block size must be a multiple of 512 */
- if (sb->s_blocksize & 511)
- return 0;
+ int nsr02 = 0;
+ int nsr03 = 0;
+ struct udf_sb_info *sbi;
+ sbi = UDF_SB(sb);
if (sb->s_blocksize < sizeof(struct volStructDesc))
sectorsize = sizeof(struct volStructDesc);
else
sectorsize = sb->s_blocksize;
- sector += (UDF_SB_SESSION(sb) << sb->s_blocksize_bits);
+ 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)
- {
+ for (; !nsr02 && !nsr03; sector += sectorsize) {
/* Read a block */
bh = udf_tread(sb, sector >> sb->s_blocksize_bits);
if (!bh)
/* Look for ISO descriptors */
vsd = (struct volStructDesc *)(bh->b_data +
- (sector & (sb->s_blocksize - 1)));
+ (sector & (sb->s_blocksize - 1)));
- if (vsd->stdIdent[0] == 0)
- {
- udf_release_data(bh);
+ if (vsd->stdIdent[0] == 0) {
+ brelse(bh);
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");
- break;
- case 1:
- udf_debug("ISO9660 Primary Volume Descriptor found\n");
- break;
- case 2:
- udf_debug("ISO9660 Supplementary Volume Descriptor found\n");
- break;
- case 3:
- udf_debug("ISO9660 Volume Partition Descriptor found\n");
- break;
- case 255:
- udf_debug("ISO9660 Volume Descriptor Set Terminator found\n");
- break;
- default:
- udf_debug("ISO9660 VRS (%u) found\n", vsd->structType);
- break;
+ } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_CD001,
+ VSD_STD_ID_LEN)) {
+ switch (vsd->structType) {
+ case 0:
+ udf_debug("ISO9660 Boot Record found\n");
+ break;
+ case 1:
+ udf_debug("ISO9660 Primary Volume Descriptor "
+ "found\n");
+ break;
+ case 2:
+ udf_debug("ISO9660 Supplementary Volume "
+ "Descriptor found\n");
+ break;
+ case 3:
+ udf_debug("ISO9660 Volume Partition Descriptor "
+ "found\n");
+ break;
+ case 255:
+ udf_debug("ISO9660 Volume Descriptor Set "
+ "Terminator found\n");
+ break;
+ default:
+ udf_debug("ISO9660 VRS (%u) found\n",
+ vsd->structType);
+ break;
}
- }
- else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01, VSD_STD_ID_LEN))
- {
- }
- else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01, VSD_STD_ID_LEN))
- {
- udf_release_data(bh);
+ } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_BEA01,
+ VSD_STD_ID_LEN))
+ ; /* nothing */
+ else if (!strncmp(vsd->stdIdent, VSD_STD_ID_TEA01,
+ VSD_STD_ID_LEN)) {
+ brelse(bh);
break;
- }
- else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02, VSD_STD_ID_LEN))
- {
+ } else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR02,
+ VSD_STD_ID_LEN))
nsr02 = sector;
- }
- else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03, VSD_STD_ID_LEN))
- {
+ else if (!strncmp(vsd->stdIdent, VSD_STD_ID_NSR03,
+ VSD_STD_ID_LEN))
nsr03 = sector;
- }
- udf_release_data(bh);
+ brelse(bh);
}
if (nsr03)
return nsr03;
else if (nsr02)
return nsr02;
- else if (sector - (UDF_SB_SESSION(sb) << sb->s_blocksize_bits) == 32768)
+ else if (sector - (sbi->s_session << sb->s_blocksize_bits) == 32768)
return -1;
else
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 = UDF_SB_LASTBLOCK(sb);
- struct buffer_head *bh = NULL;
- uint16_t ident;
- uint32_t location;
- int i;
-
- 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++) {
- if (last[i] < 0 || !(bh = sb_bread(sb, last[i])))
- {
- ident = location = 0;
- }
- else
- {
- ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
- location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
- udf_release_data(bh);
- }
-
- if (ident == TAG_IDENT_AVDP)
- {
- if (location == last[i] - UDF_SB_SESSION(sb))
- {
- lastblock = UDF_SB_ANCHOR(sb)[0] = last[i] - UDF_SB_SESSION(sb);
- UDF_SB_ANCHOR(sb)[1] = last[i] - 256 - UDF_SB_SESSION(sb);
- }
- else if (location == udf_variable_to_fixed(last[i]) - UDF_SB_SESSION(sb))
- {
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- lastblock = UDF_SB_ANCHOR(sb)[0] = udf_variable_to_fixed(last[i]) - UDF_SB_SESSION(sb);
- UDF_SB_ANCHOR(sb)[1] = lastblock - 256 - UDF_SB_SESSION(sb);
- }
- 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];
- UDF_SB_ANCHOR(sb)[3] = 512;
- }
- else
- {
- if (last[i] < 256 || !(bh = sb_bread(sb, last[i] - 256)))
- {
- ident = location = 0;
- }
- else
- {
- ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
- location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
- udf_release_data(bh);
- }
-
- if (ident == TAG_IDENT_AVDP &&
- location == last[i] - 256 - UDF_SB_SESSION(sb))
- {
- lastblock = last[i];
- UDF_SB_ANCHOR(sb)[1] = last[i] - 256;
- }
- else
- {
- if (last[i] < 312 + UDF_SB_SESSION(sb) || !(bh = sb_bread(sb, last[i] - 312 - UDF_SB_SESSION(sb))))
- {
- ident = location = 0;
- }
- else
- {
- ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
- location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
- udf_release_data(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]);
- UDF_SB_ANCHOR(sb)[1] = lastblock - 256;
- }
- }
- }
- }
- }
-
- if (!lastblock)
- {
- /* We havn't found the lastblock. check 312 */
- if ((bh = sb_bread(sb, 312 + UDF_SB_SESSION(sb))))
- {
- ident = le16_to_cpu(((tag *)bh->b_data)->tagIdent);
- location = le32_to_cpu(((tag *)bh->b_data)->tagLocation);
- udf_release_data(bh);
-
- if (ident == TAG_IDENT_AVDP && location == 256)
- UDF_SET_FLAG(sb, UDF_FLAG_VARCONV);
- }
- }
-
- for (i = 0; i < ARRAY_SIZE(UDF_SB_ANCHOR(sb)); i++) {
- if (UDF_SB_ANCHOR(sb)[i])
- {
- if (!(bh = udf_read_tagged(sb,
- UDF_SB_ANCHOR(sb)[i], UDF_SB_ANCHOR(sb)[i], &ident)))
- {
- UDF_SB_ANCHOR(sb)[i] = 0;
- }
- else
- {
- udf_release_data(bh);
- if ((ident != TAG_IDENT_AVDP) && (i ||
- (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE)))
- {
- UDF_SB_ANCHOR(sb)[i] = 0;
- }
- }
- }
- }
-
- UDF_SB_LASTBLOCK(sb) = lastblock;
-}
-
-static int
-udf_find_fileset(struct super_block *sb, kernel_lb_addr *fileset, kernel_lb_addr *root)
+static int udf_find_fileset(struct super_block *sb,
+ struct kernel_lb_addr *fileset,
+ struct kernel_lb_addr *root)
{
struct buffer_head *bh = NULL;
long lastblock;
uint16_t ident;
+ struct udf_sb_info *sbi;
if (fileset->logicalBlockNum != 0xFFFFFFFF ||
- fileset->partitionReferenceNum != 0xFFFF)
- {
- bh = udf_read_ptagged(sb, *fileset, 0, &ident);
+ fileset->partitionReferenceNum != 0xFFFF) {
+ bh = udf_read_ptagged(sb, fileset, 0, &ident);
- if (!bh)
+ if (!bh) {
return 1;
- else if (ident != TAG_IDENT_FSD)
- {
- udf_release_data(bh);
+ } else if (ident != TAG_IDENT_FSD) {
+ brelse(bh);
return 1;
}
-
+
}
- if (!bh) /* Search backwards through the partitions */
- {
- kernel_lb_addr newfileset;
+ sbi = UDF_SB(sb);
+ if (!bh) {
+ /* Search backwards through the partitions */
+ struct kernel_lb_addr newfileset;
+/* --> cvg: FIXME - is it reasonable? */
return 1;
-
- for (newfileset.partitionReferenceNum=UDF_SB_NUMPARTS(sb)-1;
- (newfileset.partitionReferenceNum != 0xFFFF &&
- fileset->logicalBlockNum == 0xFFFFFFFF &&
- fileset->partitionReferenceNum == 0xFFFF);
- newfileset.partitionReferenceNum--)
- {
- lastblock = UDF_SB_PARTLEN(sb, newfileset.partitionReferenceNum);
+
+ for (newfileset.partitionReferenceNum = sbi->s_partitions - 1;
+ (newfileset.partitionReferenceNum != 0xFFFF &&
+ fileset->logicalBlockNum == 0xFFFFFFFF &&
+ fileset->partitionReferenceNum == 0xFFFF);
+ newfileset.partitionReferenceNum--) {
+ lastblock = sbi->s_partmaps
+ [newfileset.partitionReferenceNum]
+ .s_partition_len;
newfileset.logicalBlockNum = 0;
- do
- {
- bh = udf_read_ptagged(sb, newfileset, 0, &ident);
- if (!bh)
- {
- newfileset.logicalBlockNum ++;
+ do {
+ bh = udf_read_ptagged(sb, &newfileset, 0,
+ &ident);
+ if (!bh) {
+ newfileset.logicalBlockNum++;
continue;
}
- switch (ident)
+ switch (ident) {
+ case TAG_IDENT_SBD:
{
- case TAG_IDENT_SBD:
- {
- struct spaceBitmapDesc *sp;
- sp = (struct spaceBitmapDesc *)bh->b_data;
- newfileset.logicalBlockNum += 1 +
- ((le32_to_cpu(sp->numOfBytes) + sizeof(struct spaceBitmapDesc) - 1)
- >> sb->s_blocksize_bits);
- udf_release_data(bh);
- break;
- }
- case TAG_IDENT_FSD:
- {
- *fileset = newfileset;
- break;
- }
- default:
- {
- newfileset.logicalBlockNum ++;
- udf_release_data(bh);
- bh = NULL;
- break;
- }
+ struct spaceBitmapDesc *sp;
+ sp = (struct spaceBitmapDesc *)
+ bh->b_data;
+ newfileset.logicalBlockNum += 1 +
+ ((le32_to_cpu(sp->numOfBytes) +
+ sizeof(struct spaceBitmapDesc)
+ - 1) >> sb->s_blocksize_bits);
+ brelse(bh);
+ break;
}
- }
- while (newfileset.logicalBlockNum < lastblock &&
- fileset->logicalBlockNum == 0xFFFFFFFF &&
- fileset->partitionReferenceNum == 0xFFFF);
+ case TAG_IDENT_FSD:
+ *fileset = newfileset;
+ break;
+ default:
+ newfileset.logicalBlockNum++;
+ brelse(bh);
+ bh = NULL;
+ break;
+ }
+ } while (newfileset.logicalBlockNum < lastblock &&
+ fileset->logicalBlockNum == 0xFFFFFFFF &&
+ fileset->partitionReferenceNum == 0xFFFF);
}
}
if ((fileset->logicalBlockNum != 0xFFFFFFFF ||
- fileset->partitionReferenceNum != 0xFFFF) && bh)
- {
+ fileset->partitionReferenceNum != 0xFFFF) && bh) {
udf_debug("Fileset at block=%d, partition=%d\n",
- fileset->logicalBlockNum, fileset->partitionReferenceNum);
+ fileset->logicalBlockNum,
+ fileset->partitionReferenceNum);
- UDF_SB_PARTITION(sb) = fileset->partitionReferenceNum;
+ sbi->s_partition = fileset->partitionReferenceNum;
udf_load_fileset(sb, bh, root);
- udf_release_data(bh);
+ brelse(bh);
return 0;
}
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 %02u:%02u (%x)\n",
- recording, recording_usec,
- ts.year, ts.month, ts.day, ts.hour, ts.minute, ts.typeAndTimezone);
- UDF_SB_RECORDTIME(sb).tv_sec = recording;
- UDF_SB_RECORDTIME(sb).tv_nsec = recording_usec * 1000;
+ 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",
+ 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_VOLIDENT(sb), outstr.u_name,
- outstr.u_len > 31 ? 31 : outstr.u_len);
- udf_debug("volIdent[] = '%s'\n", UDF_SB_VOLIDENT(sb));
+ 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)
+static void udf_load_fileset(struct super_block *sb, struct buffer_head *bh,
+ struct kernel_lb_addr *root)
{
struct fileSetDesc *fset;
*root = lelb_to_cpu(fset->rootDirectoryICB.extLocation);
- UDF_SB_SERIALNUM(sb) = le16_to_cpu(fset->descTag.tagSerialNum);
+ UDF_SB(sb)->s_serial_number = le16_to_cpu(fset->descTag.tagSerialNum);
- udf_debug("Rootdir at block=%d, partition=%d\n",
- root->logicalBlockNum, root->partitionReferenceNum);
+ udf_debug("Rootdir at block=%d, partition=%d\n",
+ root->logicalBlockNum, root->partitionReferenceNum);
}
-static void
-udf_load_partdesc(struct super_block *sb, struct buffer_head *bh)
+int udf_compute_nr_groups(struct super_block *sb, u32 partition)
{
- struct partitionDesc *p;
- int i;
-
- p = (struct partitionDesc *)bh->b_data;
+ 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);
+}
- for (i=0; i<UDF_SB_NUMPARTS(sb); i++)
- {
- udf_debug("Searching map: (%d == %d)\n",
- UDF_SB_PARTMAPS(sb)[i].s_partition_num, le16_to_cpu(p->partitionNumber));
- if (UDF_SB_PARTMAPS(sb)[i].s_partition_num == le16_to_cpu(p->partitionNumber))
- {
- UDF_SB_PARTLEN(sb,i) = le32_to_cpu(p->partitionLength); /* blocks */
- UDF_SB_PARTROOT(sb,i) = le32_to_cpu(p->partitionStartingLocation);
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_READ_ONLY)
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_READ_ONLY;
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_WRITE_ONCE)
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_WRITE_ONCE;
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_REWRITABLE)
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_REWRITABLE;
- if (le32_to_cpu(p->accessType) == PD_ACCESS_TYPE_OVERWRITABLE)
- UDF_SB_PARTFLAGS(sb,i) |= 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 = { le32_to_cpu(phd->unallocSpaceTable.extPosition), i };
+static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
+{
+ struct udf_bitmap *bitmap;
+ int nr_groups;
+ int size;
- UDF_SB_PARTMAPS(sb)[i].s_uspace.s_table =
- udf_iget(sb, loc);
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_UNALLOC_TABLE;
- udf_debug("unallocSpaceTable (part %d) @ %ld\n",
- i, UDF_SB_PARTMAPS(sb)[i].s_uspace.s_table->i_ino);
- }
- if (phd->unallocSpaceBitmap.extLength)
- {
- UDF_SB_ALLOC_BITMAP(sb, i, s_uspace);
- if (UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap != NULL)
- {
- UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extLength =
- le32_to_cpu(phd->unallocSpaceBitmap.extLength);
- UDF_SB_PARTMAPS(sb)[i].s_uspace.s_bitmap->s_extPosition =
- le32_to_cpu(phd->unallocSpaceBitmap.extPosition);
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_UNALLOC_BITMAP;
- udf_debug("unallocSpaceBitmap (part %d) @ %d\n",
- i, UDF_SB_PARTMAPS(sb)[i].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 = { le32_to_cpu(phd->freedSpaceTable.extPosition), i };
+ nr_groups = udf_compute_nr_groups(sb, index);
+ size = sizeof(struct udf_bitmap) +
+ (sizeof(struct buffer_head *) * nr_groups);
- UDF_SB_PARTMAPS(sb)[i].s_fspace.s_table =
- udf_iget(sb, loc);
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_FREED_TABLE;
- udf_debug("freedSpaceTable (part %d) @ %ld\n",
- i, UDF_SB_PARTMAPS(sb)[i].s_fspace.s_table->i_ino);
- }
- if (phd->freedSpaceBitmap.extLength)
- {
- UDF_SB_ALLOC_BITMAP(sb, i, s_fspace);
- if (UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap != NULL)
- {
- UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extLength =
- le32_to_cpu(phd->freedSpaceBitmap.extLength);
- UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extPosition =
- le32_to_cpu(phd->freedSpaceBitmap.extPosition);
- UDF_SB_PARTFLAGS(sb,i) |= UDF_PART_FLAG_FREED_BITMAP;
- udf_debug("freedSpaceBitmap (part %d) @ %d\n",
- i, UDF_SB_PARTMAPS(sb)[i].s_fspace.s_bitmap->s_extPosition);
- }
- }
- }
- break;
- }
- }
- if (i == UDF_SB_NUMPARTS(sb))
- {
- udf_debug("Partition (%d) not found in partition map\n", le16_to_cpu(p->partitionNumber));
- }
+ if (size <= PAGE_SIZE)
+ bitmap = kmalloc(size, GFP_KERNEL);
else
- {
- udf_debug("Partition (%d:%d type %x) starts at physical %d, block length %d\n",
- le16_to_cpu(p->partitionNumber), i, UDF_SB_PARTTYPE(sb,i),
- UDF_SB_PARTROOT(sb,i), UDF_SB_PARTLEN(sb,i));
+ 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_load_logicalvol(struct super_block *sb, struct buffer_head * bh, kernel_lb_addr *fileset)
+static int udf_fill_partdesc_info(struct super_block *sb,
+ struct partitionDesc *p, int p_index)
{
- struct logicalVolDesc *lvd;
- int i, j, offset;
- uint8_t type;
-
- lvd = (struct logicalVolDesc *)bh->b_data;
+ 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;
- UDF_SB_ALLOC_PARTMAPS(sb, le32_to_cpu(lvd->numPartitionMaps));
-
- for (i=0,offset=0;
- i<UDF_SB_NUMPARTS(sb) && offset<le32_to_cpu(lvd->mapTableLength);
- i++,offset+=((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapLength)
- {
- type = ((struct genericPartitionMap *)&(lvd->partitionMaps[offset]))->partitionMapType;
- if (type == 1)
- {
- struct genericPartitionMap1 *gpm1 = (struct genericPartitionMap1 *)&(lvd->partitionMaps[offset]);
- UDF_SB_PARTTYPE(sb,i) = UDF_TYPE1_MAP15;
- UDF_SB_PARTVSN(sb,i) = le16_to_cpu(gpm1->volSeqNum);
- UDF_SB_PARTNUM(sb,i) = le16_to_cpu(gpm1->partitionNum);
- UDF_SB_PARTFUNC(sb,i) = NULL;
+ 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;
}
- 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)
- {
- UDF_SB_PARTTYPE(sb,i) = UDF_VIRTUAL_MAP15;
- UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_virt15;
- }
- else if (le16_to_cpu(((__le16 *)upm2->partIdent.identSuffix)[0]) == 0x0200)
- {
- UDF_SB_PARTTYPE(sb,i) = UDF_VIRTUAL_MAP20;
- UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_virt20;
+ 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;
+ struct udf_part_map *map;
+ 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;
+ 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, 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) {
+ udf_debug("Partition (%d) not found in partition map\n",
+ 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 {
+ 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");
+ }
+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, 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;
+
+ 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 += 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 *)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 *)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]);
-
- UDF_SB_PARTTYPE(sb,i) = UDF_SPARABLE_MAP15;
- UDF_SB_TYPESPAR(sb,i).s_packet_len = le16_to_cpu(spm->packetLength);
- for (j=0; j<spm->numSparingTables; j++)
- {
- loc = le32_to_cpu(spm->locSparingTable[j]);
- UDF_SB_TYPESPAR(sb,i).s_spar_map[j] =
- udf_read_tagged(sb, loc, loc, &ident);
- if (UDF_SB_TYPESPAR(sb,i).s_spar_map[j] != NULL)
- {
- st = (struct sparingTable *)UDF_SB_TYPESPAR(sb,i).s_spar_map[j]->b_data;
- if (ident != 0 ||
- strncmp(st->sparingIdent.ident, UDF_ID_SPARING, strlen(UDF_ID_SPARING)))
- {
- udf_release_data(UDF_SB_TYPESPAR(sb,i).s_spar_map[j]);
- UDF_SB_TYPESPAR(sb,i).s_spar_map[j] = NULL;
- }
+ 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);
+ for (j = 0; j < spm->numSparingTables; j++) {
+ 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;
}
}
- UDF_SB_PARTFUNC(sb,i) = udf_get_pblock_spar15;
- }
- else
- {
- udf_debug("Unknown ident: %s\n", upm2->partIdent.ident);
+ 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);
continue;
}
- UDF_SB_PARTVSN(sb,i) = le16_to_cpu(upm2->volSeqNum);
- UDF_SB_PARTNUM(sb,i) = le16_to_cpu(upm2->partitionNum);
+ map->s_volumeseqnum = le16_to_cpu(upm2->volSeqNum);
+ map->s_partition_num = le16_to_cpu(upm2->partitionNum);
}
udf_debug("Partition (%d:%d) type %d on volume %d\n",
- i, UDF_SB_PARTNUM(sb,i), type, UDF_SB_PARTVSN(sb,i));
+ i, map->s_partition_num, type,
+ map->s_volumeseqnum);
}
- if (fileset)
- {
- long_ad *la = (long_ad *)&(lvd->logicalVolContentsUse[0]);
+ if (fileset) {
+ 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, partition=%d\n",
- fileset->logicalBlockNum,
- fileset->partitionReferenceNum);
+ udf_debug("FileSet found in LogicalVolDesc at block=%d, "
+ "partition=%d\n", fileset->logicalBlockNum,
+ fileset->partitionReferenceNum);
}
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;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct logicalVolIntegrityDesc *lvid;
while (loc.extLength > 0 &&
- (bh = udf_read_tagged(sb, loc.extLocation,
- loc.extLocation, &ident)) &&
- ident == TAG_IDENT_LVID)
- {
- UDF_SB_LVIDBH(sb) = bh;
-
- if (UDF_SB_LVID(sb)->nextIntegrityExt.extLength)
- udf_load_logicalvolint(sb, leea_to_cpu(UDF_SB_LVID(sb)->nextIntegrityExt));
-
- if (UDF_SB_LVIDBH(sb) != bh)
- udf_release_data(bh);
+ (bh = udf_read_tagged(sb, loc.extLocation,
+ loc.extLocation, &ident)) &&
+ ident == TAG_IDENT_LVID) {
+ sbi->s_lvid_bh = bh;
+ lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+
+ if (lvid->nextIntegrityExt.extLength)
+ udf_load_logicalvolint(sb,
+ leea_to_cpu(lvid->nextIntegrityExt));
+
+ if (sbi->s_lvid_bh != bh)
+ brelse(bh);
loc.extLength -= sb->s_blocksize;
- loc.extLocation ++;
+ loc.extLocation++;
}
- if (UDF_SB_LVIDBH(sb) != bh)
- udf_release_data(bh);
+ if (sbi->s_lvid_bh != bh)
+ brelse(bh);
}
/*
* 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;
+ int done = 0;
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 */
- for (;(!done && block <= lastblock); block++)
- {
+ /*
+ * 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;
- }
- 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;
-
- vdp = (struct volDescPtr *)bh->b_data;
- 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;
- }
- break;
- case TAG_IDENT_PD: /* ISO 13346 3/10.5 */
- if (!vds[VDS_POS_PARTITION_DESC].block)
- vds[VDS_POS_PARTITION_DESC].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;
- }
- 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;
- }
- break;
- case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
- vds[VDS_POS_TERMINATING_DESC].block = block;
- if (next_e)
- {
- block = next_s;
- lastblock = next_e;
- next_s = next_e = 0;
- }
- else
- done = 1;
- break;
- }
- udf_release_data(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;
- udf_load_partdesc(sb, bh);
- 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)
- udf_load_partdesc(sb, bh2);
- udf_release_data(bh2);
- }
+ switch (ident) {
+ case TAG_IDENT_PVD: /* ISO 13346 3/10.1 */
+ 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 */
+ 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_e = next_e >> sb->s_blocksize_bits;
+ next_e += next_s;
+ }
+ break;
+ case TAG_IDENT_IUVD: /* ISO 13346 3/10.4 */
+ 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 */
+ curr = &vds[VDS_POS_PARTITION_DESC];
+ if (!curr->block)
+ curr->block = block;
+ break;
+ case TAG_IDENT_LVD: /* ISO 13346 3/10.6 */
+ 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 */
+ curr = &vds[VDS_POS_UNALLOC_SPACE_DESC];
+ if (vdsn >= curr->volDescSeqNum) {
+ curr->volDescSeqNum = vdsn;
+ curr->block = block;
}
- udf_release_data(bh);
+ break;
+ case TAG_IDENT_TD: /* ISO 13346 3/10.9 */
+ vds[VDS_POS_TERMINATING_DESC].block = block;
+ if (next_e) {
+ block = next_s;
+ lastblock = next_e;
+ next_s = next_e = 0;
+ } else
+ done = 1;
+ break;
}
+ 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;
+
+ if (vds[VDS_POS_LOGICAL_VOL_DESC].block && udf_load_logicalvol(sb,
+ vds[VDS_POS_LOGICAL_VOL_DESC].block, fileset))
+ return 1;
+
+ 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_sequence(struct super_block *sb, struct buffer_head *bh,
+ struct kernel_lb_addr *fileset)
+{
+ struct anchorVolDescPtr *anchor;
+ long main_s, main_e, reserve_s, reserve_e;
+ struct udf_sb_info *sbi;
+
+ 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);
+}
+
/*
- * udf_check_valid()
+ * Check whether there is an anchor block in the given block and
+ * load Volume Descriptor Sequence if so.
*/
-static int
-udf_check_valid(struct super_block *sb, int novrs, int silent)
+static int udf_check_anchor_block(struct super_block *sb, sector_t block,
+ struct kernel_lb_addr *fileset)
{
- long block;
+ struct buffer_head *bh;
+ uint16_t ident;
+ int ret;
- if (novrs)
- {
- udf_debug("Validity check skipped because of novrs option\n");
+ 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;
- }
- /* Check that it is NSR02 compliant */
- /* Process any "CD-ROM Volume Descriptor Set" (ECMA 167 2/8.3.1) */
- else if ((block = udf_vrs(sb, silent)) == -1)
- {
- udf_debug("Failed to read byte 32768. Assuming open disc. Skipping validity check\n");
- if (!UDF_SB_LASTBLOCK(sb))
- UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
+
+ bh = udf_read_tagged(sb, block, block, &ident);
+ if (!bh)
+ return 0;
+ if (ident != TAG_IDENT_AVDP) {
+ brelse(bh);
return 0;
}
- else
- return !block;
+ ret = udf_load_sequence(sb, bh, fileset);
+ brelse(bh);
+ return ret;
}
-static int
-udf_load_partition(struct super_block *sb, kernel_lb_addr *fileset)
+/* 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)
{
- struct anchorVolDescPtr *anchor;
- uint16_t ident;
- struct buffer_head *bh;
- long main_s, main_e, reserve_s, reserve_e;
- int i, j;
-
- if (!sb)
- return 1;
+ sector_t last[6];
+ int i;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ int last_count = 0;
- for (i = 0; i < ARRAY_SIZE(UDF_SB_ANCHOR(sb)); i++) {
- if (UDF_SB_ANCHOR(sb)[i] && (bh = udf_read_tagged(sb,
- UDF_SB_ANCHOR(sb)[i], UDF_SB_ANCHOR(sb)[i], &ident)))
- {
- 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;
-
- udf_release_data(bh);
-
- /* 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(UDF_SB_ANCHOR(sb))) {
- udf_debug("No Anchor block found\n");
- return 1;
- } else
- udf_debug("Using anchor in block %d\n", UDF_SB_ANCHOR(sb)[i]);
-
- for (i=0; i<UDF_SB_NUMPARTS(sb); i++)
- {
- switch UDF_SB_PARTTYPE(sb, i)
- {
- case UDF_VIRTUAL_MAP15:
- case UDF_VIRTUAL_MAP20:
- {
- kernel_lb_addr ino;
-
- if (!UDF_SB_LASTBLOCK(sb))
- {
- UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
- udf_find_anchor(sb);
- }
+ /* 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;
+}
- if (!UDF_SB_LASTBLOCK(sb))
- {
- udf_debug("Unable to determine Lastblock (For Virtual Partition)\n");
- return 1;
- }
+/*
+ * 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);
- for (j=0; j<UDF_SB_NUMPARTS(sb); j++)
- {
- if (j != i &&
- UDF_SB_PARTVSN(sb,i) == UDF_SB_PARTVSN(sb,j) &&
- UDF_SB_PARTNUM(sb,i) == UDF_SB_PARTNUM(sb,j))
- {
- ino.partitionReferenceNum = j;
- ino.logicalBlockNum = UDF_SB_LASTBLOCK(sb) -
- UDF_SB_PARTROOT(sb,j);
- break;
- }
- }
+ lastblock = udf_scan_anchors(sb, sbi->s_last_block, fileset);
+ if (lastblock)
+ goto out;
- if (j == UDF_SB_NUMPARTS(sb))
- return 1;
+ /* 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 (!(UDF_SB_VAT(sb) = udf_iget(sb, ino)))
- 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;
+}
- if (UDF_SB_PARTTYPE(sb,i) == UDF_VIRTUAL_MAP15)
- {
- UDF_SB_TYPEVIRT(sb,i).s_start_offset = udf_ext0_offset(UDF_SB_VAT(sb));
- UDF_SB_TYPEVIRT(sb,i).s_num_entries = (UDF_SB_VAT(sb)->i_size - 36) >> 2;
- }
- else if (UDF_SB_PARTTYPE(sb,i) == UDF_VIRTUAL_MAP20)
- {
- struct buffer_head *bh = NULL;
- uint32_t pos;
-
- pos = udf_block_map(UDF_SB_VAT(sb), 0);
- bh = sb_bread(sb, pos);
- UDF_SB_TYPEVIRT(sb,i).s_start_offset =
- le16_to_cpu(((struct virtualAllocationTable20 *)bh->b_data + udf_ext0_offset(UDF_SB_VAT(sb)))->lengthHeader) +
- udf_ext0_offset(UDF_SB_VAT(sb));
- UDF_SB_TYPEVIRT(sb,i).s_num_entries = (UDF_SB_VAT(sb)->i_size -
- UDF_SB_TYPEVIRT(sb,i).s_start_offset) >> 2;
- udf_release_data(bh);
- }
- UDF_SB_PARTROOT(sb,i) = udf_get_pblock(sb, 0, i, 0);
- UDF_SB_PARTLEN(sb,i) = UDF_SB_PARTLEN(sb,ino.partitionReferenceNum);
- }
+/*
+ * 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 (!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)
{
- if (UDF_SB_LVIDBH(sb))
- {
- int i;
- kernel_timestamp cpu_time;
-
- UDF_SB_LVIDIU(sb)->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
- UDF_SB_LVIDIU(sb)->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- UDF_SB_LVID(sb)->recordingDateAndTime = cpu_to_lets(cpu_time);
- UDF_SB_LVID(sb)->integrityType = LVID_INTEGRITY_TYPE_OPEN;
-
- UDF_SB_LVID(sb)->descTag.descCRC =
- cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb) + sizeof(tag),
- le16_to_cpu(UDF_SB_LVID(sb)->descTag.descCRCLength), 0));
-
- UDF_SB_LVID(sb)->descTag.tagChecksum = 0;
- for (i=0; i<16; i++)
- if (i != 4)
- UDF_SB_LVID(sb)->descTag.tagChecksum +=
- ((uint8_t *)&(UDF_SB_LVID(sb)->descTag))[i];
-
- mark_buffer_dirty(UDF_SB_LVIDBH(sb));
- }
+ 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);
+ 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)
{
- if (UDF_SB_LVIDBH(sb) &&
- UDF_SB_LVID(sb)->integrityType == LVID_INTEGRITY_TYPE_OPEN)
- {
- int i;
- kernel_timestamp cpu_time;
-
- UDF_SB_LVIDIU(sb)->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
- UDF_SB_LVIDIU(sb)->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- UDF_SB_LVID(sb)->recordingDateAndTime = cpu_to_lets(cpu_time);
- if (UDF_MAX_WRITE_VERSION > le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev))
- UDF_SB_LVIDIU(sb)->maxUDFWriteRev = cpu_to_le16(UDF_MAX_WRITE_VERSION);
- if (UDF_SB_UDFREV(sb) > le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev))
- UDF_SB_LVIDIU(sb)->minUDFReadRev = cpu_to_le16(UDF_SB_UDFREV(sb));
- if (UDF_SB_UDFREV(sb) > le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev))
- UDF_SB_LVIDIU(sb)->minUDFWriteRev = cpu_to_le16(UDF_SB_UDFREV(sb));
- UDF_SB_LVID(sb)->integrityType = cpu_to_le32(LVID_INTEGRITY_TYPE_CLOSE);
-
- UDF_SB_LVID(sb)->descTag.descCRC =
- cpu_to_le16(udf_crc((char *)UDF_SB_LVID(sb) + sizeof(tag),
- le16_to_cpu(UDF_SB_LVID(sb)->descTag.descCRCLength), 0));
-
- UDF_SB_LVID(sb)->descTag.tagChecksum = 0;
- for (i=0; i<16; i++)
- if (i != 4)
- UDF_SB_LVID(sb)->descTag.tagChecksum +=
- ((uint8_t *)&(UDF_SB_LVID(sb)->descTag))[i];
-
- mark_buffer_dirty(UDF_SB_LVIDBH(sb));
+ 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;
+}
+
+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;
- struct inode *inode=NULL;
+ 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 = kmalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
+ sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
if (!sbi)
return -ENOMEM;
+
sb->s_fs_info = sbi;
- memset(UDF_SB(sb), 0x00, sizeof(struct udf_sb_info));
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) &&
- uopt.flags & (1 << UDF_FLAG_NLS_MAP))
- {
+ uopt.flags & (1 << UDF_FLAG_NLS_MAP)) {
udf_error(sb, "udf_read_super",
- "utf8 cannot be combined with iocharset\n");
+ "utf8 cannot be combined with iocharset\n");
goto error_out;
}
#ifdef CONFIG_UDF_NLS
- if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map)
- {
+ if ((uopt.flags & (1 << UDF_FLAG_NLS_MAP)) && !uopt.nls_map) {
uopt.nls_map = load_nls_default();
if (!uopt.nls_map)
uopt.flags &= ~(1 << UDF_FLAG_NLS_MAP);
fileset.logicalBlockNum = 0xFFFFFFFF;
fileset.partitionReferenceNum = 0xFFFF;
- UDF_SB(sb)->s_flags = uopt.flags;
- UDF_SB(sb)->s_uid = uopt.uid;
- UDF_SB(sb)->s_gid = uopt.gid;
- UDF_SB(sb)->s_umask = uopt.umask;
- UDF_SB(sb)->s_nls_map = uopt.nls_map;
+ 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;
+ 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 )
- UDF_SB_SESSION(sb) = udf_get_last_session(sb);
+ if (uopt.session == 0xFFFFFFFF)
+ sbi->s_session = udf_get_last_session(sb);
else
- UDF_SB_SESSION(sb) = uopt.session;
-
- udf_debug("Multi-session=%d\n", UDF_SB_SESSION(sb));
+ sbi->s_session = uopt.session;
- UDF_SB_LASTBLOCK(sb) = uopt.lastblock;
- UDF_SB_ANCHOR(sb)[0] = UDF_SB_ANCHOR(sb)[1] = 0;
- UDF_SB_ANCHOR(sb)[2] = uopt.anchor;
- UDF_SB_ANCHOR(sb)[3] = 256;
-
- if (udf_check_valid(sb, uopt.novrs, silent)) /* read volume recognition sequences */
- {
- printk("UDF-fs: No VRS found\n");
- goto error_out;
- }
-
- udf_find_anchor(sb);
+ udf_debug("Multi-session=%d\n", sbi->s_session);
/* 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))
- {
- printk("UDF-fs: No partition found (1)\n");
+ 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", UDF_SB_LASTBLOCK(sb));
-
- if ( UDF_SB_LVIDBH(sb) )
- {
- uint16_t minUDFReadRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev);
- uint16_t minUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFWriteRev);
- /* uint16_t maxUDFWriteRev = le16_to_cpu(UDF_SB_LVIDIU(sb)->maxUDFWriteRev); */
-
- if (minUDFReadRev > UDF_MAX_READ_VERSION)
- {
- printk("UDF-fs: minUDFReadRev=%x (max is %x)\n",
- le16_to_cpu(UDF_SB_LVIDIU(sb)->minUDFReadRev),
- UDF_MAX_READ_VERSION);
+ udf_debug("Lastblock=%d\n", sbi->s_last_block);
+
+ if (sbi->s_lvid_bh) {
+ 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); */
+
+ if (minUDFReadRev > UDF_MAX_READ_VERSION) {
+ 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;
- }
- UDF_SB_UDFREV(sb) = minUDFWriteRev;
+ sbi->s_udfrev = minUDFWriteRev;
if (minUDFReadRev >= UDF_VERS_USE_EXTENDED_FE)
UDF_SET_FLAG(sb, UDF_FLAG_USE_EXTENDED_FE);
UDF_SET_FLAG(sb, UDF_FLAG_USE_STREAMS);
}
- if ( !UDF_SB_NUMPARTS(sb) )
- {
- printk("UDF-fs: No partition found (2)\n");
+ if (!sbi->s_partitions) {
+ printk(KERN_WARNING "UDF-fs: No partition found (2)\n");
goto error_out;
}
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_READ_ONLY)
- printk("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 ( udf_find_fileset(sb, &fileset, &rootdir) )
- {
- printk("UDF-fs: No fileset found\n");
+ if (udf_find_fileset(sb, &fileset, &rootdir)) {
+ printk(KERN_WARNING "UDF-fs: No fileset found\n");
goto error_out;
}
- if (!silent)
- {
- kernel_timestamp ts;
- udf_time_to_stamp(&ts, UDF_SB_RECORDTIME(sb));
- udf_info("UDF %s (%s) Mounting volume '%s', timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
- UDFFS_VERSION, UDFFS_DATE,
- UDF_SB_VOLIDENT(sb), ts.year, ts.month, ts.day, ts.hour, ts.minute,
- ts.typeAndTimezone);
+ if (!silent) {
+ 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",
+ 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);
- if (!inode)
- {
- printk("UDF-fs: Error in udf_iget, block=%d, partition=%d\n",
- rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
+ inode = udf_iget(sb, &rootdir);
+ if (!inode) {
+ printk(KERN_ERR "UDF-fs: Error in udf_iget, block=%d, "
+ "partition=%d\n",
+ rootdir.logicalBlockNum, rootdir.partitionReferenceNum);
goto error_out;
}
/* Allocate a dentry for the root inode */
sb->s_root = d_alloc_root(inode);
- if (!sb->s_root)
- {
- printk("UDF-fs: Couldn't allocate root dentry\n");
+ if (!sb->s_root) {
+ printk(KERN_ERR "UDF-fs: Couldn't allocate root dentry\n");
iput(inode);
goto error_out;
}
- sb->s_maxbytes = 1<<30;
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
return 0;
error_out:
- if (UDF_SB_VAT(sb))
- iput(UDF_SB_VAT(sb));
- if (UDF_SB_NUMPARTS(sb))
- {
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
- iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
- iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
- UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_uspace);
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
- UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_fspace);
- if (UDF_SB_PARTTYPE(sb, UDF_SB_PARTITION(sb)) == UDF_SPARABLE_MAP15)
- {
- for (i=0; i<4; i++)
- udf_release_data(UDF_SB_TYPESPAR(sb, UDF_SB_PARTITION(sb)).s_spar_map[i]);
- }
- }
+ if (sbi->s_vat_inode)
+ iput(sbi->s_vat_inode);
+ 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(UDF_SB(sb)->s_nls_map);
+ unload_nls(sbi->s_nls_map);
#endif
if (!(sb->s_flags & MS_RDONLY))
udf_close_lvid(sb);
- udf_release_data(UDF_SB_LVIDBH(sb));
- UDF_SB_FREE(sb);
+ brelse(sbi->s_lvid_bh);
+
+ kfree(sbi->s_partmaps);
kfree(sbi);
sb->s_fs_info = NULL;
+
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;
- if (!(sb->s_flags & MS_RDONLY))
- {
+ if (!(sb->s_flags & MS_RDONLY)) {
/* mark sb error */
sb->s_dirt = 1;
}
va_start(args, fmt);
- vsprintf(error_buf, fmt, args);
+ vsnprintf(error_buf, sizeof(error_buf), fmt, args);
va_end(args);
- printk (KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
+ printk(KERN_CRIT "UDF-fs error (device %s): %s: %s\n",
sb->s_id, function, error_buf);
}
void udf_warning(struct super_block *sb, const char *function,
- const char *fmt, ...)
+ const char *fmt, ...)
{
va_list args;
- va_start (args, fmt);
- vsprintf(error_buf, fmt, args);
+ va_start(args, fmt);
+ vsnprintf(error_buf, sizeof(error_buf), fmt, args);
va_end(args);
printk(KERN_WARNING "UDF-fs warning (device %s): %s: %s\n",
- sb->s_id, function, error_buf);
+ 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)
+static void udf_put_super(struct super_block *sb)
{
int i;
+ struct udf_sb_info *sbi;
- if (UDF_SB_VAT(sb))
- iput(UDF_SB_VAT(sb));
- if (UDF_SB_NUMPARTS(sb))
- {
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
- iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
- iput(UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
- UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_uspace);
- if (UDF_SB_PARTFLAGS(sb, UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
- UDF_SB_FREE_BITMAP(sb,UDF_SB_PARTITION(sb),s_fspace);
- if (UDF_SB_PARTTYPE(sb, UDF_SB_PARTITION(sb)) == UDF_SPARABLE_MAP15)
- {
- for (i=0; i<4; i++)
- udf_release_data(UDF_SB_TYPESPAR(sb, UDF_SB_PARTITION(sb)).s_spar_map[i]);
- }
- }
+ sbi = UDF_SB(sb);
+
+ lock_kernel();
+
+ if (sbi->s_vat_inode)
+ iput(sbi->s_vat_inode);
+ 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(UDF_SB(sb)->s_nls_map);
+ unload_nls(sbi->s_nls_map);
#endif
if (!(sb->s_flags & MS_RDONLY))
udf_close_lvid(sb);
- udf_release_data(UDF_SB_LVIDBH(sb));
- UDF_SB_FREE(sb);
+ brelse(sbi->s_lvid_bh);
+ kfree(sbi->s_partmaps);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
+
+ unlock_kernel();
}
-/*
- * 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)
+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;
+}
+
+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);
+ else
+ lvidiu = NULL;
buf->f_type = UDF_SUPER_MAGIC;
buf->f_bsize = sb->s_blocksize;
- buf->f_blocks = UDF_SB_PARTLEN(sb, UDF_SB_PARTITION(sb));
+ buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len;
buf->f_bfree = udf_count_free(sb);
buf->f_bavail = buf->f_bfree;
- buf->f_files = (UDF_SB_LVIDBH(sb) ?
- (le32_to_cpu(UDF_SB_LVIDIU(sb)->numFiles) +
- le32_to_cpu(UDF_SB_LVIDIU(sb)->numDirs)) : 0) + buf->f_bfree;
+ buf->f_files = (lvidiu != NULL ? (le32_to_cpu(lvidiu->numFiles) +
+ 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_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;
lock_kernel();
loc.logicalBlockNum = bitmap->s_extPosition;
- loc.partitionReferenceNum = UDF_SB_PARTITION(sb);
- bh = udf_read_ptagged(sb, loc, 0, &ident);
+ loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
+ bh = udf_read_ptagged(sb, &loc, 0, &ident);
- if (!bh)
- {
+ if (!bh) {
printk(KERN_ERR "udf: udf_count_free failed\n");
goto out;
- }
- else if (ident != TAG_IDENT_SBD)
- {
- udf_release_data(bh);
+ } else if (ident != TAG_IDENT_SBD) {
+ brelse(bh);
printk(KERN_ERR "udf: udf_count_free failed\n");
goto out;
}
index = sizeof(struct spaceBitmapDesc); /* offset in first block only */
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--;
- }
- if ( bytes )
- {
- udf_release_data(bh);
- newblock = udf_get_lb_pblock(sb, loc, ++block);
+ while (bytes > 0) {
+ 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);
bh = udf_tread(sb, newblock);
- if (!bh)
- {
+ if (!bh) {
udf_debug("read failed\n");
goto out;
}
ptr = (uint8_t *)bh->b_data;
}
}
- udf_release_data(bh);
+ brelse(bh);
out:
unlock_kernel();
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 extoffset, elen;
- kernel_lb_addr bloc, eloc;
+ uint32_t elen;
+ struct kernel_lb_addr eloc;
int8_t etype;
- struct buffer_head *bh = NULL;
+ struct extent_position epos;
lock_kernel();
- bloc = UDF_I_LOCATION(table);
- extoffset = sizeof(struct unallocSpaceEntry);
+ epos.block = UDF_I(table)->i_location;
+ epos.offset = sizeof(struct unallocSpaceEntry);
+ epos.bh = NULL;
- while ((etype = udf_next_aext(table, &bloc, &extoffset, &eloc, &elen, &bh, 1)) != -1)
- {
+ while ((etype = udf_next_aext(table, &epos, &eloc, &elen, 1)) != -1)
accum += (elen >> table->i_sb->s_blocksize_bits);
- }
- udf_release_data(bh);
+
+ brelse(epos.bh);
unlock_kernel();
return accum;
}
-
-static unsigned int
-udf_count_free(struct super_block *sb)
+
+static unsigned int udf_count_free(struct super_block *sb)
{
unsigned int accum = 0;
-
- if (UDF_SB_LVIDBH(sb))
- {
- if (le32_to_cpu(UDF_SB_LVID(sb)->numOfPartitions) > UDF_SB_PARTITION(sb))
- {
- accum = le32_to_cpu(UDF_SB_LVID(sb)->freeSpaceTable[UDF_SB_PARTITION(sb)]);
-
+ struct udf_sb_info *sbi;
+ struct udf_part_map *map;
+
+ sbi = UDF_SB(sb);
+ if (sbi->s_lvid_bh) {
+ 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]);
if (accum == 0xFFFFFFFF)
accum = 0;
}
if (accum)
return accum;
- if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_BITMAP)
- {
+ map = &sbi->s_partmaps[sbi->s_partition];
+ if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_BITMAP) {
accum += udf_count_free_bitmap(sb,
- UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_bitmap);
+ map->s_uspace.s_bitmap);
}
- if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_BITMAP)
- {
+ if (map->s_partition_flags & UDF_PART_FLAG_FREED_BITMAP) {
accum += udf_count_free_bitmap(sb,
- UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_bitmap);
+ map->s_fspace.s_bitmap);
}
if (accum)
return accum;
- if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_UNALLOC_TABLE)
- {
+ if (map->s_partition_flags & UDF_PART_FLAG_UNALLOC_TABLE) {
accum += udf_count_free_table(sb,
- UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_uspace.s_table);
+ map->s_uspace.s_table);
}
- if (UDF_SB_PARTFLAGS(sb,UDF_SB_PARTITION(sb)) & UDF_PART_FLAG_FREED_TABLE)
- {
+ if (map->s_partition_flags & UDF_PART_FLAG_FREED_TABLE) {
accum += udf_count_free_table(sb,
- UDF_SB_PARTMAPS(sb)[UDF_SB_PARTITION(sb)].s_fspace.s_table);
+ map->s_fspace.s_table);
}
return accum;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff