#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"
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)
{
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)
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;
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);
+ 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, 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);
projects / linux-2.6-omap-h63xx.git / blobdiff