#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 <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 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)
{
.write_super = udf_write_super,
.statfs = udf_statfs,
.remount_fs = udf_remount_fs,
+ .show_options = udf_show_options,
};
struct udf_options {
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 (sb->s_blocksize != UDF_DEFAULT_BLOCKSIZE)
+ 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 (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);
+ /*
+ * s_anchor[2] could be zeroed out in case there is no anchor
+ * in the specified block, but then the "anchor=N" option
+ * originally given by the user wasn't effective, so it's OK
+ * if we don't show it.
+ */
+ if (sbi->s_anchor[2] != 0)
+ seq_printf(seq, ",anchor=%u", sbi->s_anchor[2]);
+ /*
+ * 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
*
{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->blocksize = UDF_DEFAULT_BLOCKSIZE;
uopt->partition = 0xFFFF;
uopt->session = 0xFFFFFFFF;
uopt->lastblock = 0;
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))
uopt.gid = sbi->s_gid;
uopt.umask = sbi->s_umask;
- if (!udf_parse_options(options, &uopt))
+ if (!udf_parse_options(options, &uopt, true))
return -EINVAL;
sbi->s_flags = uopt.flags;
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)
{
struct volStructDesc *vsd = NULL;
static void udf_load_pvoldesc(struct super_block *sb, struct buffer_head *bh)
{
struct primaryVolDesc *pvoldesc;
- time_t recording;
- long recording_usec;
struct ustr instr;
struct ustr outstr;
pvoldesc = (struct primaryVolDesc *)bh->b_data;
- if (udf_stamp_to_time(&recording, &recording_usec,
- lets_to_cpu(pvoldesc->recordingDateAndTime))) {
+ if (udf_disk_stamp_to_time(&UDF_SB(sb)->s_record_time,
+ pvoldesc->recordingDateAndTime)) {
kernel_timestamp ts;
ts = lets_to_cpu(pvoldesc->recordingDateAndTime);
- udf_debug("recording time %ld/%ld, %04u/%02u/%02u"
+ udf_debug("recording time %04u/%02u/%02u"
" %02u:%02u (%x)\n",
- recording, recording_usec,
ts.year, ts.month, ts.day, ts.hour,
ts.minute, ts.typeAndTimezone);
- UDF_SB(sb)->s_record_time.tv_sec = recording;
- UDF_SB(sb)->s_record_time.tv_nsec = recording_usec * 1000;
}
if (!udf_build_ustr(&instr, pvoldesc->volIdent, 32))
int udf_compute_nr_groups(struct super_block *sb, u32 partition)
{
struct udf_part_map *map = &UDF_SB(sb)->s_partmaps[partition];
- return (map->s_partition_len +
- (sizeof(struct spaceBitmapDesc) << 3) +
- (sb->s_blocksize * 8) - 1) /
- (sb->s_blocksize * 8);
+ return DIV_ROUND_UP(map->s_partition_len +
+ (sizeof(struct spaceBitmapDesc) << 3),
+ sb->s_blocksize * 8);
}
static struct udf_bitmap *udf_sb_alloc_bitmap(struct super_block *sb, u32 index)
sbi = UDF_SB(sb);
for (i = 0; i < ARRAY_SIZE(sbi->s_anchor); i++) {
- if (sbi->s_anchor[i] &&
- (bh = udf_read_tagged(sb, sbi->s_anchor[i],
- sbi->s_anchor[i], &ident))) {
- anchor = (struct anchorVolDescPtr *)bh->b_data;
-
- /* 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(
+ if (!sbi->s_anchor[i])
+ continue;
+ bh = udf_read_tagged(sb, sbi->s_anchor[i], sbi->s_anchor[i],
+ &ident);
+ if (!bh)
+ continue;
+
+ 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(
+ reserve_e = le32_to_cpu(
anchor->reserveVolDescSeqExt.extLength);
- reserve_e = reserve_e >> sb->s_blocksize_bits;
- reserve_e += reserve_s;
+ reserve_e = reserve_e >> sb->s_blocksize_bits;
+ reserve_e += reserve_s;
- brelse(bh);
+ brelse(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;
- }
+ /* 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;
}
if (i == ARRAY_SIZE(sbi->s_anchor)) {
udf_debug("No Anchor block found\n");
return 1;
- } else
- udf_debug("Using anchor in block %d\n", sbi->s_anchor[i]);
+ }
+ udf_debug("Using anchor in block %d\n", sbi->s_anchor[i]);
for (i = 0; i < sbi->s_partitions; i++) {
kernel_lb_addr uninitialized_var(ino);
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
if (bh) {
- kernel_timestamp cpu_time;
struct logicalVolIntegrityDesc *lvid =
(struct logicalVolIntegrityDesc *)bh->b_data;
struct logicalVolIntegrityDescImpUse *lvidiu =
lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
+ udf_time_to_disk_stamp(&lvid->recordingDateAndTime,
+ CURRENT_TIME);
lvid->integrityType = LVID_INTEGRITY_TYPE_OPEN;
lvid->descTag.descCRC = cpu_to_le16(
static void udf_close_lvid(struct super_block *sb)
{
- kernel_timestamp cpu_time;
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
udf_sb_lvidiu(sbi);
lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
lvidiu->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- if (udf_time_to_stamp(&cpu_time, CURRENT_TIME))
- lvid->recordingDateAndTime = cpu_to_lets(cpu_time);
+ 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);
vfree(bitmap);
}
-/*
- * 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;
mutex_init(&sbi->s_alloc_mutex);
- if (!udf_parse_options((char *)options, &uopt))
+ if (!udf_parse_options((char *)options, &uopt, false))
goto error_out;
if (uopt.flags & (1 << UDF_FLAG_UTF8) &&
sbi->s_nls_map = uopt.nls_map;
/* Set the block size for all transfers */
- if (!udf_set_blocksize(sb, uopt.blocksize))
+ if (!sb_min_blocksize(sb, uopt.blocksize)) {
+ udf_debug("Bad block size (%d)\n", uopt.blocksize);
+ printk(KERN_ERR "udf: bad block size (%d)\n", uopt.blocksize);
goto error_out;
+ }
if (uopt.session == 0xFFFFFFFF)
sbi->s_session = udf_get_last_session(sb);
}
if (!silent) {
- kernel_timestamp ts;
- udf_time_to_stamp(&ts, sbi->s_record_time);
- udf_info("UDF %s (%s) Mounting volume '%s', "
+ timestamp ts;
+ udf_time_to_disk_stamp(&ts, sbi->s_record_time);
+ udf_info("UDF: Mounting volume '%s', "
"timestamp %04u/%02u/%02u %02u:%02u (%x)\n",
- UDFFS_VERSION, UDFFS_DATE,
- sbi->s_volume_ident, ts.year, ts.month, ts.day,
- ts.hour, ts.minute, ts.typeAndTimezone);
+ sbi->s_volume_ident, le16_to_cpu(ts.year), ts.month, ts.day,
+ ts.hour, ts.minute, le16_to_cpu(ts.typeAndTimezone));
}
if (!(sb->s_flags & MS_RDONLY))
udf_open_lvid(sb);
return -EINVAL;
}
-void udf_error(struct super_block *sb, const char *function,
- const char *fmt, ...)
+static void udf_error(struct super_block *sb, const char *function,
+ const char *fmt, ...)
{
va_list args;
sb->s_id, function, error_buf);
}
-/*
- * udf_put_super
- *
- * PURPOSE
- * Prepare for destruction of the superblock.
- *
- * DESCRIPTION
- * Called before the filesystem is unmounted.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static void udf_put_super(struct super_block *sb)
{
int i;
sb->s_fs_info = NULL;
}
-/*
- * udf_stat_fs
- *
- * PURPOSE
- * Return info about the filesystem.
- *
- * DESCRIPTION
- * Called by sys_statfs()
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
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)
{
int block = 0, newblock;
kernel_lb_addr loc;
uint32_t bytes;
- uint8_t value;
uint8_t *ptr;
uint16_t ident;
struct spaceBitmapDesc *bm;
ptr = (uint8_t *)bh->b_data;
while (bytes > 0) {
- while ((bytes > 0) && (index < sb->s_blocksize)) {
- value = ptr[index];
- accum += udf_bitmap_lookup[value & 0x0f];
- accum += udf_bitmap_lookup[value >> 4];
- index++;
- bytes--;
- }
+ u32 cur_bytes = min_t(u32, bytes, sb->s_blocksize - index);
+ accum += bitmap_weight((const unsigned long *)(ptr + index),
+ cur_bytes * 8);
+ bytes -= cur_bytes;
if (bytes) {
brelse(bh);
newblock = udf_get_lb_pblock(sb, loc, ++block);
lock_kernel();
- epos.block = UDF_I_LOCATION(table);
+ epos.block = UDF_I(table)->i_location;
epos.offset = sizeof(struct unallocSpaceEntry);
epos.bh = NULL;
projects / linux-2.6-omap-h63xx.git / blobdiff