* 10/04/98 dgb Added rudimentary directory functions
* 10/07/98 Fully working udf_block_map! It works!
* 11/25/98 bmap altered to better support extents
- * 12/06/98 blf partition support in udf_iget, udf_block_map and udf_read_inode
+ * 12/06/98 blf partition support in udf_iget, udf_block_map
+ * and udf_read_inode
* 12/12/98 rewrote udf_block_map to handle next extents and descs across
* block boundaries (which is not actually allowed)
* 12/20/98 added support for strategy 4096
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/slab.h>
+#include <linux/crc-itu-t.h>
#include "udf_i.h"
#include "udf_sb.h"
static mode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int);
static void udf_fill_inode(struct inode *, struct buffer_head *);
-static struct buffer_head *inode_getblk(struct inode *, long, int *,
- long *, int *);
-static int8_t udf_insert_aext(struct inode *, kernel_lb_addr, int,
- kernel_lb_addr, uint32_t, struct buffer_head *);
+static int udf_alloc_i_data(struct inode *inode, size_t size);
+static struct buffer_head *inode_getblk(struct inode *, sector_t, int *,
+ sector_t *, int *);
+static int8_t udf_insert_aext(struct inode *, struct extent_position,
+ struct kernel_lb_addr, uint32_t);
static void udf_split_extents(struct inode *, int *, int, int,
- kernel_long_ad [EXTENT_MERGE_SIZE], int *);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int *);
static void udf_prealloc_extents(struct inode *, int, int,
- kernel_long_ad [EXTENT_MERGE_SIZE], int *);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int *);
static void udf_merge_extents(struct inode *,
- kernel_long_ad [EXTENT_MERGE_SIZE], int *);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int *);
static void udf_update_extents(struct inode *,
- kernel_long_ad [EXTENT_MERGE_SIZE], int, int,
- kernel_lb_addr, uint32_t, struct buffer_head **);
+ struct kernel_long_ad[EXTENT_MERGE_SIZE], int, int,
+ struct extent_position *);
static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
-/*
- * udf_delete_inode
- *
- * PURPOSE
- * Clean-up before the specified inode is destroyed.
- *
- * DESCRIPTION
- * This routine is called when the kernel destroys an inode structure
- * ie. when iput() finds i_count == 0.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- *
- * Called at the last iput() if i_nlink is zero.
- */
-void udf_delete_inode(struct inode * inode)
+
+void udf_delete_inode(struct inode *inode)
{
truncate_inode_pages(&inode->i_data, 0);
unlock_kernel();
return;
+
no_delete:
clear_inode(inode);
}
+/*
+ * If we are going to release inode from memory, we truncate last inode extent
+ * to proper length. We could use drop_inode() but it's called under inode_lock
+ * and thus we cannot mark inode dirty there. We use clear_inode() but we have
+ * to make sure to write inode as it's not written automatically.
+ */
void udf_clear_inode(struct inode *inode)
{
- if (!(inode->i_sb->s_flags & MS_RDONLY)) {
- lock_kernel();
- udf_discard_prealloc(inode);
- unlock_kernel();
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB &&
+ inode->i_size != iinfo->i_lenExtents) {
+ printk(KERN_WARNING "UDF-fs (%s): Inode %lu (mode %o) has "
+ "inode size %llu different from extent lenght %llu. "
+ "Filesystem need not be standards compliant.\n",
+ inode->i_sb->s_id, inode->i_ino, inode->i_mode,
+ (unsigned long long)inode->i_size,
+ (unsigned long long)iinfo->i_lenExtents);
}
-
- kfree(UDF_I_DATA(inode));
- UDF_I_DATA(inode) = NULL;
+ kfree(iinfo->i_ext.i_data);
+ iinfo->i_ext.i_data = NULL;
}
static int udf_writepage(struct page *page, struct writeback_control *wbc)
return block_read_full_page(page, udf_get_block);
}
-static int udf_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
+static int udf_write_begin(struct file *file, struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
{
- return block_prepare_write(page, from, to, udf_get_block);
+ *pagep = NULL;
+ return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+ udf_get_block);
}
static sector_t udf_bmap(struct address_space *mapping, sector_t block)
{
- return generic_block_bmap(mapping,block,udf_get_block);
+ return generic_block_bmap(mapping, block, udf_get_block);
}
-struct address_space_operations udf_aops = {
- .readpage = udf_readpage,
- .writepage = udf_writepage,
- .sync_page = block_sync_page,
- .prepare_write = udf_prepare_write,
- .commit_write = generic_commit_write,
- .bmap = udf_bmap,
+const struct address_space_operations udf_aops = {
+ .readpage = udf_readpage,
+ .writepage = udf_writepage,
+ .sync_page = block_sync_page,
+ .write_begin = udf_write_begin,
+ .write_end = generic_write_end,
+ .bmap = udf_bmap,
};
-void udf_expand_file_adinicb(struct inode * inode, int newsize, int * err)
+void udf_expand_file_adinicb(struct inode *inode, int newsize, int *err)
{
struct page *page;
char *kaddr;
+ struct udf_inode_info *iinfo = UDF_I(inode);
struct writeback_control udf_wbc = {
.sync_mode = WB_SYNC_NONE,
.nr_to_write = 1,
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
- if (!UDF_I_LENALLOC(inode))
- {
+ if (!iinfo->i_lenAlloc) {
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
- UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_SHORT;
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
else
- UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_LONG;
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
mark_inode_dirty(inode);
return;
}
page = grab_cache_page(inode->i_mapping, 0);
BUG_ON(!PageLocked(page));
- if (!PageUptodate(page))
- {
+ if (!PageUptodate(page)) {
kaddr = kmap(page);
- memset(kaddr + UDF_I_LENALLOC(inode), 0x00,
- PAGE_CACHE_SIZE - UDF_I_LENALLOC(inode));
- memcpy(kaddr, UDF_I_DATA(inode) + UDF_I_LENEATTR(inode),
- UDF_I_LENALLOC(inode));
+ memset(kaddr + iinfo->i_lenAlloc, 0x00,
+ PAGE_CACHE_SIZE - iinfo->i_lenAlloc);
+ memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr,
+ iinfo->i_lenAlloc);
flush_dcache_page(page);
SetPageUptodate(page);
kunmap(page);
}
- memset(UDF_I_DATA(inode) + UDF_I_LENEATTR(inode), 0x00,
- UDF_I_LENALLOC(inode));
- UDF_I_LENALLOC(inode) = 0;
+ memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00,
+ iinfo->i_lenAlloc);
+ iinfo->i_lenAlloc = 0;
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
- UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_SHORT;
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
else
- UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_LONG;
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
inode->i_data.a_ops->writepage(page, &udf_wbc);
page_cache_release(page);
mark_inode_dirty(inode);
}
-struct buffer_head * udf_expand_dir_adinicb(struct inode *inode, int *block, int *err)
+struct buffer_head *udf_expand_dir_adinicb(struct inode *inode, int *block,
+ int *err)
{
int newblock;
- struct buffer_head *sbh = NULL, *dbh = NULL;
- kernel_lb_addr bloc, eloc;
- uint32_t elen, extoffset;
+ struct buffer_head *dbh = NULL;
+ struct kernel_lb_addr eloc;
uint8_t alloctype;
+ struct extent_position epos;
struct udf_fileident_bh sfibh, dfibh;
- loff_t f_pos = udf_ext0_offset(inode) >> 2;
- int size = (udf_ext0_offset(inode) + inode->i_size) >> 2;
+ loff_t f_pos = udf_ext0_offset(inode);
+ int size = udf_ext0_offset(inode) + inode->i_size;
struct fileIdentDesc cfi, *sfi, *dfi;
+ struct udf_inode_info *iinfo = UDF_I(inode);
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
alloctype = ICBTAG_FLAG_AD_SHORT;
else
alloctype = ICBTAG_FLAG_AD_LONG;
- if (!inode->i_size)
- {
- UDF_I_ALLOCTYPE(inode) = alloctype;
+ if (!inode->i_size) {
+ iinfo->i_alloc_type = alloctype;
mark_inode_dirty(inode);
return NULL;
}
/* alloc block, and copy data to it */
*block = udf_new_block(inode->i_sb, inode,
- UDF_I_LOCATION(inode).partitionReferenceNum,
- UDF_I_LOCATION(inode).logicalBlockNum, err);
-
+ iinfo->i_location.partitionReferenceNum,
+ iinfo->i_location.logicalBlockNum, err);
if (!(*block))
return NULL;
newblock = udf_get_pblock(inode->i_sb, *block,
- UDF_I_LOCATION(inode).partitionReferenceNum, 0);
+ iinfo->i_location.partitionReferenceNum,
+ 0);
if (!newblock)
return NULL;
dbh = udf_tgetblk(inode->i_sb, newblock);
unlock_buffer(dbh);
mark_buffer_dirty_inode(dbh, inode);
- sfibh.soffset = sfibh.eoffset = (f_pos & ((inode->i_sb->s_blocksize - 1) >> 2)) << 2;
- sbh = sfibh.sbh = sfibh.ebh = NULL;
+ sfibh.soffset = sfibh.eoffset =
+ f_pos & (inode->i_sb->s_blocksize - 1);
+ sfibh.sbh = sfibh.ebh = NULL;
dfibh.soffset = dfibh.eoffset = 0;
dfibh.sbh = dfibh.ebh = dbh;
- while ( (f_pos < size) )
- {
- UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_IN_ICB;
- sfi = udf_fileident_read(inode, &f_pos, &sfibh, &cfi, NULL, NULL, NULL, NULL, NULL, NULL);
- if (!sfi)
- {
- udf_release_data(dbh);
+ while (f_pos < size) {
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
+ sfi = udf_fileident_read(inode, &f_pos, &sfibh, &cfi, NULL,
+ NULL, NULL, NULL);
+ if (!sfi) {
+ brelse(dbh);
return NULL;
}
- UDF_I_ALLOCTYPE(inode) = alloctype;
+ iinfo->i_alloc_type = alloctype;
sfi->descTag.tagLocation = cpu_to_le32(*block);
dfibh.soffset = dfibh.eoffset;
dfibh.eoffset += (sfibh.eoffset - sfibh.soffset);
dfi = (struct fileIdentDesc *)(dbh->b_data + dfibh.soffset);
if (udf_write_fi(inode, sfi, dfi, &dfibh, sfi->impUse,
- sfi->fileIdent + le16_to_cpu(sfi->lengthOfImpUse)))
- {
- UDF_I_ALLOCTYPE(inode) = ICBTAG_FLAG_AD_IN_ICB;
- udf_release_data(dbh);
+ sfi->fileIdent +
+ le16_to_cpu(sfi->lengthOfImpUse))) {
+ iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
+ brelse(dbh);
return NULL;
}
}
mark_buffer_dirty_inode(dbh, inode);
- memset(UDF_I_DATA(inode) + UDF_I_LENEATTR(inode), 0, UDF_I_LENALLOC(inode));
- UDF_I_LENALLOC(inode) = 0;
- bloc = UDF_I_LOCATION(inode);
+ memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0,
+ iinfo->i_lenAlloc);
+ iinfo->i_lenAlloc = 0;
eloc.logicalBlockNum = *block;
- eloc.partitionReferenceNum = UDF_I_LOCATION(inode).partitionReferenceNum;
- elen = inode->i_size;
- UDF_I_LENEXTENTS(inode) = elen;
- extoffset = udf_file_entry_alloc_offset(inode);
- udf_add_aext(inode, &bloc, &extoffset, eloc, elen, &sbh, 0);
+ eloc.partitionReferenceNum =
+ iinfo->i_location.partitionReferenceNum;
+ iinfo->i_lenExtents = inode->i_size;
+ epos.bh = NULL;
+ epos.block = iinfo->i_location;
+ epos.offset = udf_file_entry_alloc_offset(inode);
+ udf_add_aext(inode, &epos, &eloc, inode->i_size, 0);
/* UniqueID stuff */
- udf_release_data(sbh);
+ brelse(epos.bh);
mark_inode_dirty(inode);
return dbh;
}
-static int udf_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_result, int create)
+static int udf_get_block(struct inode *inode, sector_t block,
+ struct buffer_head *bh_result, int create)
{
int err, new;
struct buffer_head *bh;
- unsigned long phys;
+ sector_t phys = 0;
+ struct udf_inode_info *iinfo;
- if (!create)
- {
+ if (!create) {
phys = udf_block_map(inode, block);
if (phys)
map_bh(bh_result, inode->i_sb, phys);
lock_kernel();
- if (block < 0)
- goto abort_negative;
-
- if (block == UDF_I_NEXT_ALLOC_BLOCK(inode) + 1)
- {
- UDF_I_NEXT_ALLOC_BLOCK(inode) ++;
- UDF_I_NEXT_ALLOC_GOAL(inode) ++;
+ iinfo = UDF_I(inode);
+ if (block == iinfo->i_next_alloc_block + 1) {
+ iinfo->i_next_alloc_block++;
+ iinfo->i_next_alloc_goal++;
}
err = 0;
bh = inode_getblk(inode, block, &err, &phys, &new);
- if (bh)
- BUG();
+ BUG_ON(bh);
if (err)
goto abort;
- if (!phys)
- BUG();
+ BUG_ON(!phys);
if (new)
set_buffer_new(bh_result);
map_bh(bh_result, inode->i_sb, phys);
+
abort:
unlock_kernel();
return err;
-
-abort_negative:
- udf_warning(inode->i_sb, "udf_get_block", "block < 0");
- goto abort;
}
-static struct buffer_head *
-udf_getblk(struct inode *inode, long block, int create, int *err)
+static struct buffer_head *udf_getblk(struct inode *inode, long block,
+ int create, int *err)
{
+ struct buffer_head *bh;
struct buffer_head dummy;
dummy.b_state = 0;
dummy.b_blocknr = -1000;
*err = udf_get_block(inode, block, &dummy, create);
- if (!*err && buffer_mapped(&dummy))
- {
- struct buffer_head *bh;
+ if (!*err && buffer_mapped(&dummy)) {
bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
- if (buffer_new(&dummy))
- {
+ if (buffer_new(&dummy)) {
lock_buffer(bh);
memset(bh->b_data, 0x00, inode->i_sb->s_blocksize);
set_buffer_uptodate(bh);
}
return bh;
}
+
return NULL;
}
-static struct buffer_head * inode_getblk(struct inode * inode, long block,
- int *err, long *phys, int *new)
+/* Extend the file by 'blocks' blocks, return the number of extents added */
+int udf_extend_file(struct inode *inode, struct extent_position *last_pos,
+ struct kernel_long_ad *last_ext, sector_t blocks)
{
- struct buffer_head *pbh = NULL, *cbh = NULL, *nbh = NULL, *result = NULL;
- kernel_long_ad laarr[EXTENT_MERGE_SIZE];
- uint32_t pextoffset = 0, cextoffset = 0, nextoffset = 0;
+ sector_t add;
+ int count = 0, fake = !(last_ext->extLength & UDF_EXTENT_LENGTH_MASK);
+ struct super_block *sb = inode->i_sb;
+ struct kernel_lb_addr prealloc_loc = {};
+ int prealloc_len = 0;
+ struct udf_inode_info *iinfo;
+
+ /* The previous extent is fake and we should not extend by anything
+ * - there's nothing to do... */
+ if (!blocks && fake)
+ return 0;
+
+ iinfo = UDF_I(inode);
+ /* Round the last extent up to a multiple of block size */
+ if (last_ext->extLength & (sb->s_blocksize - 1)) {
+ last_ext->extLength =
+ (last_ext->extLength & UDF_EXTENT_FLAG_MASK) |
+ (((last_ext->extLength & UDF_EXTENT_LENGTH_MASK) +
+ sb->s_blocksize - 1) & ~(sb->s_blocksize - 1));
+ iinfo->i_lenExtents =
+ (iinfo->i_lenExtents + sb->s_blocksize - 1) &
+ ~(sb->s_blocksize - 1);
+ }
+
+ /* Last extent are just preallocated blocks? */
+ if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) ==
+ EXT_NOT_RECORDED_ALLOCATED) {
+ /* Save the extent so that we can reattach it to the end */
+ prealloc_loc = last_ext->extLocation;
+ prealloc_len = last_ext->extLength;
+ /* Mark the extent as a hole */
+ last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
+ (last_ext->extLength & UDF_EXTENT_LENGTH_MASK);
+ last_ext->extLocation.logicalBlockNum = 0;
+ last_ext->extLocation.partitionReferenceNum = 0;
+ }
+
+ /* Can we merge with the previous extent? */
+ if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) ==
+ EXT_NOT_RECORDED_NOT_ALLOCATED) {
+ add = ((1 << 30) - sb->s_blocksize -
+ (last_ext->extLength & UDF_EXTENT_LENGTH_MASK)) >>
+ sb->s_blocksize_bits;
+ if (add > blocks)
+ add = blocks;
+ blocks -= add;
+ last_ext->extLength += add << sb->s_blocksize_bits;
+ }
+
+ if (fake) {
+ udf_add_aext(inode, last_pos, &last_ext->extLocation,
+ last_ext->extLength, 1);
+ count++;
+ } else
+ udf_write_aext(inode, last_pos, &last_ext->extLocation,
+ last_ext->extLength, 1);
+
+ /* Managed to do everything necessary? */
+ if (!blocks)
+ goto out;
+
+ /* All further extents will be NOT_RECORDED_NOT_ALLOCATED */
+ last_ext->extLocation.logicalBlockNum = 0;
+ last_ext->extLocation.partitionReferenceNum = 0;
+ add = (1 << (30-sb->s_blocksize_bits)) - 1;
+ last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
+ (add << sb->s_blocksize_bits);
+
+ /* Create enough extents to cover the whole hole */
+ while (blocks > add) {
+ blocks -= add;
+ if (udf_add_aext(inode, last_pos, &last_ext->extLocation,
+ last_ext->extLength, 1) == -1)
+ return -1;
+ count++;
+ }
+ if (blocks) {
+ last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
+ (blocks << sb->s_blocksize_bits);
+ if (udf_add_aext(inode, last_pos, &last_ext->extLocation,
+ last_ext->extLength, 1) == -1)
+ return -1;
+ count++;
+ }
+
+out:
+ /* Do we have some preallocated blocks saved? */
+ if (prealloc_len) {
+ if (udf_add_aext(inode, last_pos, &prealloc_loc,
+ prealloc_len, 1) == -1)
+ return -1;
+ last_ext->extLocation = prealloc_loc;
+ last_ext->extLength = prealloc_len;
+ count++;
+ }
+
+ /* last_pos should point to the last written extent... */
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ last_pos->offset -= sizeof(struct short_ad);
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ last_pos->offset -= sizeof(struct long_ad);
+ else
+ return -1;
+
+ return count;
+}
+
+static struct buffer_head *inode_getblk(struct inode *inode, sector_t block,
+ int *err, sector_t *phys, int *new)
+{
+ static sector_t last_block;
+ struct buffer_head *result = NULL;
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE];
+ struct extent_position prev_epos, cur_epos, next_epos;
int count = 0, startnum = 0, endnum = 0;
- uint32_t elen = 0;
- kernel_lb_addr eloc, pbloc, cbloc, nbloc;
+ uint32_t elen = 0, tmpelen;
+ struct kernel_lb_addr eloc, tmpeloc;
int c = 1;
- uint64_t lbcount = 0, b_off = 0;
- uint32_t newblocknum, newblock, offset = 0;
+ loff_t lbcount = 0, b_off = 0;
+ uint32_t newblocknum, newblock;
+ sector_t offset = 0;
int8_t etype;
- int goal = 0, pgoal = UDF_I_LOCATION(inode).logicalBlockNum;
- char lastblock = 0;
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ int goal = 0, pgoal = iinfo->i_location.logicalBlockNum;
+ int lastblock = 0;
- pextoffset = cextoffset = nextoffset = udf_file_entry_alloc_offset(inode);
- b_off = (uint64_t)block << inode->i_sb->s_blocksize_bits;
- pbloc = cbloc = nbloc = UDF_I_LOCATION(inode);
+ prev_epos.offset = udf_file_entry_alloc_offset(inode);
+ prev_epos.block = iinfo->i_location;
+ prev_epos.bh = NULL;
+ cur_epos = next_epos = prev_epos;
+ b_off = (loff_t)block << inode->i_sb->s_blocksize_bits;
/* find the extent which contains the block we are looking for.
- alternate between laarr[0] and laarr[1] for locations of the
- current extent, and the previous extent */
- do
- {
- if (pbh != cbh)
- {
- udf_release_data(pbh);
- atomic_inc(&cbh->b_count);
- pbh = cbh;
+ alternate between laarr[0] and laarr[1] for locations of the
+ current extent, and the previous extent */
+ do {
+ if (prev_epos.bh != cur_epos.bh) {
+ brelse(prev_epos.bh);
+ get_bh(cur_epos.bh);
+ prev_epos.bh = cur_epos.bh;
}
- if (cbh != nbh)
- {
- udf_release_data(cbh);
- atomic_inc(&nbh->b_count);
- cbh = nbh;
+ if (cur_epos.bh != next_epos.bh) {
+ brelse(cur_epos.bh);
+ get_bh(next_epos.bh);
+ cur_epos.bh = next_epos.bh;
}
lbcount += elen;
- pbloc = cbloc;
- cbloc = nbloc;
+ prev_epos.block = cur_epos.block;
+ cur_epos.block = next_epos.block;
- pextoffset = cextoffset;
- cextoffset = nextoffset;
+ prev_epos.offset = cur_epos.offset;
+ cur_epos.offset = next_epos.offset;
- if ((etype = udf_next_aext(inode, &nbloc, &nextoffset, &eloc, &elen, &nbh, 1)) == -1)
+ etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 1);
+ if (etype == -1)
break;
c = !c;
if (etype != (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
pgoal = eloc.logicalBlockNum +
((elen + inode->i_sb->s_blocksize - 1) >>
- inode->i_sb->s_blocksize_bits);
+ inode->i_sb->s_blocksize_bits);
- count ++;
+ count++;
} while (lbcount + elen <= b_off);
b_off -= lbcount;
offset = b_off >> inode->i_sb->s_blocksize_bits;
+ /*
+ * Move prev_epos and cur_epos into indirect extent if we are at
+ * the pointer to it
+ */
+ udf_next_aext(inode, &prev_epos, &tmpeloc, &tmpelen, 0);
+ udf_next_aext(inode, &cur_epos, &tmpeloc, &tmpelen, 0);
/* if the extent is allocated and recorded, return the block
- if the extent is not a multiple of the blocksize, round up */
+ if the extent is not a multiple of the blocksize, round up */
- if (etype == (EXT_RECORDED_ALLOCATED >> 30))
- {
- if (elen & (inode->i_sb->s_blocksize - 1))
- {
+ if (etype == (EXT_RECORDED_ALLOCATED >> 30)) {
+ if (elen & (inode->i_sb->s_blocksize - 1)) {
elen = EXT_RECORDED_ALLOCATED |
((elen + inode->i_sb->s_blocksize - 1) &
- ~(inode->i_sb->s_blocksize - 1));
- etype = udf_write_aext(inode, nbloc, &cextoffset, eloc, elen, nbh, 1);
+ ~(inode->i_sb->s_blocksize - 1));
+ etype = udf_write_aext(inode, &cur_epos, &eloc, elen, 1);
}
- udf_release_data(pbh);
- udf_release_data(cbh);
- udf_release_data(nbh);
- newblock = udf_get_lb_pblock(inode->i_sb, eloc, offset);
+ brelse(prev_epos.bh);
+ brelse(cur_epos.bh);
+ brelse(next_epos.bh);
+ newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset);
*phys = newblock;
return NULL;
}
- if (etype == -1)
- {
- endnum = startnum = ((count > 1) ? 1 : count);
- if (laarr[c].extLength & (inode->i_sb->s_blocksize - 1))
- {
- laarr[c].extLength =
- (laarr[c].extLength & UDF_EXTENT_FLAG_MASK) |
- (((laarr[c].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) &
- ~(inode->i_sb->s_blocksize - 1));
- UDF_I_LENEXTENTS(inode) =
- (UDF_I_LENEXTENTS(inode) + inode->i_sb->s_blocksize - 1) &
- ~(inode->i_sb->s_blocksize - 1);
+ last_block = block;
+ /* Are we beyond EOF? */
+ if (etype == -1) {
+ int ret;
+
+ if (count) {
+ if (c)
+ laarr[0] = laarr[1];
+ startnum = 1;
+ } else {
+ /* Create a fake extent when there's not one */
+ memset(&laarr[0].extLocation, 0x00,
+ sizeof(struct kernel_lb_addr));
+ laarr[0].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED;
+ /* Will udf_extend_file() create real extent from
+ a fake one? */
+ startnum = (offset > 0);
+ }
+ /* Create extents for the hole between EOF and offset */
+ ret = udf_extend_file(inode, &prev_epos, laarr, offset);
+ if (ret == -1) {
+ brelse(prev_epos.bh);
+ brelse(cur_epos.bh);
+ brelse(next_epos.bh);
+ /* We don't really know the error here so we just make
+ * something up */
+ *err = -ENOSPC;
+ return NULL;
}
- c = !c;
- laarr[c].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
- ((offset + 1) << inode->i_sb->s_blocksize_bits);
- memset(&laarr[c].extLocation, 0x00, sizeof(kernel_lb_addr));
- count ++;
- endnum ++;
+ c = 0;
+ offset = 0;
+ count += ret;
+ /* We are not covered by a preallocated extent? */
+ if ((laarr[0].extLength & UDF_EXTENT_FLAG_MASK) !=
+ EXT_NOT_RECORDED_ALLOCATED) {
+ /* Is there any real extent? - otherwise we overwrite
+ * the fake one... */
+ if (count)
+ c = !c;
+ laarr[c].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
+ inode->i_sb->s_blocksize;
+ memset(&laarr[c].extLocation, 0x00,
+ sizeof(struct kernel_lb_addr));
+ count++;
+ endnum++;
+ }
+ endnum = c + 1;
lastblock = 1;
- }
- else
+ } else {
endnum = startnum = ((count > 2) ? 2 : count);
- /* if the current extent is in position 0, swap it with the previous */
- if (!c && count != 1)
- {
- laarr[2] = laarr[0];
- laarr[0] = laarr[1];
- laarr[1] = laarr[2];
- c = 1;
- }
-
- /* if the current block is located in a extent, read the next extent */
- if (etype != -1)
- {
- if ((etype = udf_next_aext(inode, &nbloc, &nextoffset, &eloc, &elen, &nbh, 0)) != -1)
- {
- laarr[c+1].extLength = (etype << 30) | elen;
- laarr[c+1].extLocation = eloc;
- count ++;
- startnum ++;
- endnum ++;
- }
- else
+ /* if the current extent is in position 0,
+ swap it with the previous */
+ if (!c && count != 1) {
+ laarr[2] = laarr[0];
+ laarr[0] = laarr[1];
+ laarr[1] = laarr[2];
+ c = 1;
+ }
+
+ /* if the current block is located in an extent,
+ read the next extent */
+ etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 0);
+ if (etype != -1) {
+ laarr[c + 1].extLength = (etype << 30) | elen;
+ laarr[c + 1].extLocation = eloc;
+ count++;
+ startnum++;
+ endnum++;
+ } else
lastblock = 1;
}
- udf_release_data(cbh);
- udf_release_data(nbh);
/* if the current extent is not recorded but allocated, get the
- block in the extent corresponding to the requested block */
+ * block in the extent corresponding to the requested block */
if ((laarr[c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30))
newblocknum = laarr[c].extLocation.logicalBlockNum + offset;
- else /* otherwise, allocate a new block */
- {
- if (UDF_I_NEXT_ALLOC_BLOCK(inode) == block)
- goal = UDF_I_NEXT_ALLOC_GOAL(inode);
-
- if (!goal)
- {
- if (!(goal = pgoal))
- goal = UDF_I_LOCATION(inode).logicalBlockNum + 1;
+ else { /* otherwise, allocate a new block */
+ if (iinfo->i_next_alloc_block == block)
+ goal = iinfo->i_next_alloc_goal;
+
+ if (!goal) {
+ if (!(goal = pgoal)) /* XXX: what was intended here? */
+ goal = iinfo->i_location.logicalBlockNum + 1;
}
- if (!(newblocknum = udf_new_block(inode->i_sb, inode,
- UDF_I_LOCATION(inode).partitionReferenceNum, goal, err)))
- {
- udf_release_data(pbh);
+ newblocknum = udf_new_block(inode->i_sb, inode,
+ iinfo->i_location.partitionReferenceNum,
+ goal, err);
+ if (!newblocknum) {
+ brelse(prev_epos.bh);
*err = -ENOSPC;
return NULL;
}
- UDF_I_LENEXTENTS(inode) += inode->i_sb->s_blocksize;
+ iinfo->i_lenExtents += inode->i_sb->s_blocksize;
}
- /* if the extent the requsted block is located in contains multiple blocks,
- split the extent into at most three extents. blocks prior to requested
- block, requested block, and blocks after requested block */
+ /* if the extent the requsted block is located in contains multiple
+ * blocks, split the extent into at most three extents. blocks prior
+ * to requested block, requested block, and blocks after requested
+ * block */
udf_split_extents(inode, &c, offset, newblocknum, laarr, &endnum);
#ifdef UDF_PREALLOCATE
- /* preallocate blocks */
- udf_prealloc_extents(inode, c, lastblock, laarr, &endnum);
+ /* We preallocate blocks only for regular files. It also makes sense
+ * for directories but there's a problem when to drop the
+ * preallocation. We might use some delayed work for that but I feel
+ * it's overengineering for a filesystem like UDF. */
+ if (S_ISREG(inode->i_mode))
+ udf_prealloc_extents(inode, c, lastblock, laarr, &endnum);
#endif
/* merge any continuous blocks in laarr */
udf_merge_extents(inode, laarr, &endnum);
/* write back the new extents, inserting new extents if the new number
- of extents is greater than the old number, and deleting extents if
- the new number of extents is less than the old number */
- udf_update_extents(inode, laarr, startnum, endnum, pbloc, pextoffset, &pbh);
+ * of extents is greater than the old number, and deleting extents if
+ * the new number of extents is less than the old number */
+ udf_update_extents(inode, laarr, startnum, endnum, &prev_epos);
- udf_release_data(pbh);
+ brelse(prev_epos.bh);
- if (!(newblock = udf_get_pblock(inode->i_sb, newblocknum,
- UDF_I_LOCATION(inode).partitionReferenceNum, 0)))
- {
+ newblock = udf_get_pblock(inode->i_sb, newblocknum,
+ iinfo->i_location.partitionReferenceNum, 0);
+ if (!newblock)
return NULL;
- }
*phys = newblock;
*err = 0;
*new = 1;
- UDF_I_NEXT_ALLOC_BLOCK(inode) = block;
- UDF_I_NEXT_ALLOC_GOAL(inode) = newblocknum;
+ iinfo->i_next_alloc_block = block;
+ iinfo->i_next_alloc_goal = newblocknum;
inode->i_ctime = current_fs_time(inode->i_sb);
if (IS_SYNC(inode))
udf_sync_inode(inode);
else
mark_inode_dirty(inode);
+
return result;
}
-static void udf_split_extents(struct inode *inode, int *c, int offset, int newblocknum,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE], int *endnum)
+static void udf_split_extents(struct inode *inode, int *c, int offset,
+ int newblocknum,
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ int *endnum)
{
+ unsigned long blocksize = inode->i_sb->s_blocksize;
+ unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
+
if ((laarr[*c].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30) ||
- (laarr[*c].extLength >> 30) == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
- {
+ (laarr[*c].extLength >> 30) ==
+ (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) {
int curr = *c;
int blen = ((laarr[curr].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits;
+ blocksize - 1) >> blocksize_bits;
int8_t etype = (laarr[curr].extLength >> 30);
if (blen == 1)
;
- else if (!offset || blen == offset + 1)
- {
- laarr[curr+2] = laarr[curr+1];
- laarr[curr+1] = laarr[curr];
- }
- else
- {
- laarr[curr+3] = laarr[curr+1];
- laarr[curr+2] = laarr[curr+1] = laarr[curr];
- }
-
- if (offset)
- {
- if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30))
- {
- udf_free_blocks(inode->i_sb, inode, laarr[curr].extLocation, 0, offset);
- laarr[curr].extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
- (offset << inode->i_sb->s_blocksize_bits);
+ else if (!offset || blen == offset + 1) {
+ laarr[curr + 2] = laarr[curr + 1];
+ laarr[curr + 1] = laarr[curr];
+ } else {
+ laarr[curr + 3] = laarr[curr + 1];
+ laarr[curr + 2] = laarr[curr + 1] = laarr[curr];
+ }
+
+ if (offset) {
+ if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
+ udf_free_blocks(inode->i_sb, inode,
+ &laarr[curr].extLocation,
+ 0, offset);
+ laarr[curr].extLength =
+ EXT_NOT_RECORDED_NOT_ALLOCATED |
+ (offset << blocksize_bits);
laarr[curr].extLocation.logicalBlockNum = 0;
- laarr[curr].extLocation.partitionReferenceNum = 0;
- }
- else
+ laarr[curr].extLocation.
+ partitionReferenceNum = 0;
+ } else
laarr[curr].extLength = (etype << 30) |
- (offset << inode->i_sb->s_blocksize_bits);
- curr ++;
- (*c) ++;
- (*endnum) ++;
+ (offset << blocksize_bits);
+ curr++;
+ (*c)++;
+ (*endnum)++;
}
-
+
laarr[curr].extLocation.logicalBlockNum = newblocknum;
if (etype == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
laarr[curr].extLocation.partitionReferenceNum =
- UDF_I_LOCATION(inode).partitionReferenceNum;
+ UDF_I(inode)->i_location.partitionReferenceNum;
laarr[curr].extLength = EXT_RECORDED_ALLOCATED |
- inode->i_sb->s_blocksize;
- curr ++;
+ blocksize;
+ curr++;
- if (blen != offset + 1)
- {
+ if (blen != offset + 1) {
if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30))
- laarr[curr].extLocation.logicalBlockNum += (offset + 1);
+ laarr[curr].extLocation.logicalBlockNum +=
+ offset + 1;
laarr[curr].extLength = (etype << 30) |
- ((blen - (offset + 1)) << inode->i_sb->s_blocksize_bits);
- curr ++;
- (*endnum) ++;
+ ((blen - (offset + 1)) << blocksize_bits);
+ curr++;
+ (*endnum)++;
}
}
}
static void udf_prealloc_extents(struct inode *inode, int c, int lastblock,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE], int *endnum)
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ int *endnum)
{
int start, length = 0, currlength = 0, i;
- if (*endnum >= (c+1))
- {
+ if (*endnum >= (c + 1)) {
if (!lastblock)
return;
else
start = c;
- }
- else
- {
- if ((laarr[c+1].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30))
- {
- start = c+1;
- length = currlength = (((laarr[c+1].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits);
- }
- else
+ } else {
+ if ((laarr[c + 1].extLength >> 30) ==
+ (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
+ start = c + 1;
+ length = currlength =
+ (((laarr[c + 1].extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits);
+ } else
start = c;
}
- for (i=start+1; i<=*endnum; i++)
- {
- if (i == *endnum)
- {
+ for (i = start + 1; i <= *endnum; i++) {
+ if (i == *endnum) {
if (lastblock)
length += UDF_DEFAULT_PREALLOC_BLOCKS;
- }
- else if ((laarr[i].extLength >> 30) == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
- length += (((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits);
- else
+ } else if ((laarr[i].extLength >> 30) ==
+ (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) {
+ length += (((laarr[i].extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits);
+ } else
break;
}
- if (length)
- {
+ if (length) {
int next = laarr[start].extLocation.logicalBlockNum +
(((laarr[start].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits);
+ inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits);
int numalloc = udf_prealloc_blocks(inode->i_sb, inode,
- laarr[start].extLocation.partitionReferenceNum,
- next, (UDF_DEFAULT_PREALLOC_BLOCKS > length ? length :
- UDF_DEFAULT_PREALLOC_BLOCKS) - currlength);
-
- if (numalloc)
- {
- if (start == (c+1))
+ laarr[start].extLocation.partitionReferenceNum,
+ next, (UDF_DEFAULT_PREALLOC_BLOCKS > length ?
+ length : UDF_DEFAULT_PREALLOC_BLOCKS) -
+ currlength);
+ if (numalloc) {
+ if (start == (c + 1))
laarr[start].extLength +=
- (numalloc << inode->i_sb->s_blocksize_bits);
- else
- {
- memmove(&laarr[c+2], &laarr[c+1],
- sizeof(long_ad) * (*endnum - (c+1)));
- (*endnum) ++;
- laarr[c+1].extLocation.logicalBlockNum = next;
- laarr[c+1].extLocation.partitionReferenceNum =
- laarr[c].extLocation.partitionReferenceNum;
- laarr[c+1].extLength = EXT_NOT_RECORDED_ALLOCATED |
- (numalloc << inode->i_sb->s_blocksize_bits);
- start = c+1;
+ (numalloc <<
+ inode->i_sb->s_blocksize_bits);
+ else {
+ memmove(&laarr[c + 2], &laarr[c + 1],
+ sizeof(struct long_ad) * (*endnum - (c + 1)));
+ (*endnum)++;
+ laarr[c + 1].extLocation.logicalBlockNum = next;
+ laarr[c + 1].extLocation.partitionReferenceNum =
+ laarr[c].extLocation.
+ partitionReferenceNum;
+ laarr[c + 1].extLength =
+ EXT_NOT_RECORDED_ALLOCATED |
+ (numalloc <<
+ inode->i_sb->s_blocksize_bits);
+ start = c + 1;
}
- for (i=start+1; numalloc && i<*endnum; i++)
- {
- int elen = ((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits;
+ for (i = start + 1; numalloc && i < *endnum; i++) {
+ int elen = ((laarr[i].extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits;
- if (elen > numalloc)
- {
+ if (elen > numalloc) {
laarr[i].extLength -=
- (numalloc << inode->i_sb->s_blocksize_bits);
+ (numalloc <<
+ inode->i_sb->s_blocksize_bits);
numalloc = 0;
- }
- else
- {
+ } else {
numalloc -= elen;
- if (*endnum > (i+1))
- memmove(&laarr[i], &laarr[i+1],
- sizeof(long_ad) * (*endnum - (i+1)));
- i --;
- (*endnum) --;
+ if (*endnum > (i + 1))
+ memmove(&laarr[i],
+ &laarr[i + 1],
+ sizeof(struct long_ad) *
+ (*endnum - (i + 1)));
+ i--;
+ (*endnum)--;
}
}
- UDF_I_LENEXTENTS(inode) += numalloc << inode->i_sb->s_blocksize_bits;
+ UDF_I(inode)->i_lenExtents +=
+ numalloc << inode->i_sb->s_blocksize_bits;
}
}
}
static void udf_merge_extents(struct inode *inode,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE], int *endnum)
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ int *endnum)
{
int i;
-
- for (i=0; i<(*endnum-1); i++)
- {
- if ((laarr[i].extLength >> 30) == (laarr[i+1].extLength >> 30))
- {
- if (((laarr[i].extLength >> 30) == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) ||
- ((laarr[i+1].extLocation.logicalBlockNum - laarr[i].extLocation.logicalBlockNum) ==
- (((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits)))
- {
- if (((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- (laarr[i+1].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK)
- {
- laarr[i+1].extLength = (laarr[i+1].extLength -
- (laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- UDF_EXTENT_LENGTH_MASK) & ~(inode->i_sb->s_blocksize-1);
- laarr[i].extLength = (laarr[i].extLength & UDF_EXTENT_FLAG_MASK) +
- (UDF_EXTENT_LENGTH_MASK + 1) - inode->i_sb->s_blocksize;
- laarr[i+1].extLocation.logicalBlockNum =
- laarr[i].extLocation.logicalBlockNum +
- ((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) >>
- inode->i_sb->s_blocksize_bits);
- }
- else
- {
- laarr[i].extLength = laarr[i+1].extLength +
- (((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) & ~(inode->i_sb->s_blocksize-1));
- if (*endnum > (i+2))
- memmove(&laarr[i+1], &laarr[i+2],
- sizeof(long_ad) * (*endnum - (i+2)));
- i --;
- (*endnum) --;
- }
+ unsigned long blocksize = inode->i_sb->s_blocksize;
+ unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
+
+ for (i = 0; i < (*endnum - 1); i++) {
+ struct kernel_long_ad *li /*l[i]*/ = &laarr[i];
+ struct kernel_long_ad *lip1 /*l[i plus 1]*/ = &laarr[i + 1];
+
+ if (((li->extLength >> 30) == (lip1->extLength >> 30)) &&
+ (((li->extLength >> 30) ==
+ (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)) ||
+ ((lip1->extLocation.logicalBlockNum -
+ li->extLocation.logicalBlockNum) ==
+ (((li->extLength & UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) >> blocksize_bits)))) {
+
+ if (((li->extLength & UDF_EXTENT_LENGTH_MASK) +
+ (lip1->extLength & UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK) {
+ lip1->extLength = (lip1->extLength -
+ (li->extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ UDF_EXTENT_LENGTH_MASK) &
+ ~(blocksize - 1);
+ li->extLength = (li->extLength &
+ UDF_EXTENT_FLAG_MASK) +
+ (UDF_EXTENT_LENGTH_MASK + 1) -
+ blocksize;
+ lip1->extLocation.logicalBlockNum =
+ li->extLocation.logicalBlockNum +
+ ((li->extLength &
+ UDF_EXTENT_LENGTH_MASK) >>
+ blocksize_bits);
+ } else {
+ li->extLength = lip1->extLength +
+ (((li->extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) & ~(blocksize - 1));
+ if (*endnum > (i + 2))
+ memmove(&laarr[i + 1], &laarr[i + 2],
+ sizeof(struct long_ad) *
+ (*endnum - (i + 2)));
+ i--;
+ (*endnum)--;
}
- }
- else if (((laarr[i].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30)) &&
- ((laarr[i+1].extLength >> 30) == (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30)))
- {
- udf_free_blocks(inode->i_sb, inode, laarr[i].extLocation, 0,
- ((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits);
- laarr[i].extLocation.logicalBlockNum = 0;
- laarr[i].extLocation.partitionReferenceNum = 0;
-
- if (((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- (laarr[i+1].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK)
- {
- laarr[i+1].extLength = (laarr[i+1].extLength -
- (laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- UDF_EXTENT_LENGTH_MASK) & ~(inode->i_sb->s_blocksize-1);
- laarr[i].extLength = (laarr[i].extLength & UDF_EXTENT_FLAG_MASK) +
- (UDF_EXTENT_LENGTH_MASK + 1) - inode->i_sb->s_blocksize;
+ } else if (((li->extLength >> 30) ==
+ (EXT_NOT_RECORDED_ALLOCATED >> 30)) &&
+ ((lip1->extLength >> 30) ==
+ (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))) {
+ udf_free_blocks(inode->i_sb, inode, &li->extLocation, 0,
+ ((li->extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) >> blocksize_bits);
+ li->extLocation.logicalBlockNum = 0;
+ li->extLocation.partitionReferenceNum = 0;
+
+ if (((li->extLength & UDF_EXTENT_LENGTH_MASK) +
+ (lip1->extLength & UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) & ~UDF_EXTENT_LENGTH_MASK) {
+ lip1->extLength = (lip1->extLength -
+ (li->extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ UDF_EXTENT_LENGTH_MASK) &
+ ~(blocksize - 1);
+ li->extLength = (li->extLength &
+ UDF_EXTENT_FLAG_MASK) +
+ (UDF_EXTENT_LENGTH_MASK + 1) -
+ blocksize;
+ } else {
+ li->extLength = lip1->extLength +
+ (((li->extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) & ~(blocksize - 1));
+ if (*endnum > (i + 2))
+ memmove(&laarr[i + 1], &laarr[i + 2],
+ sizeof(struct long_ad) *
+ (*endnum - (i + 2)));
+ i--;
+ (*endnum)--;
}
- else
- {
- laarr[i].extLength = laarr[i+1].extLength +
- (((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) & ~(inode->i_sb->s_blocksize-1));
- if (*endnum > (i+2))
- memmove(&laarr[i+1], &laarr[i+2],
- sizeof(long_ad) * (*endnum - (i+2)));
- i --;
- (*endnum) --;
- }
- }
- else if ((laarr[i].extLength >> 30) == (EXT_NOT_RECORDED_ALLOCATED >> 30))
- {
- udf_free_blocks(inode->i_sb, inode, laarr[i].extLocation, 0,
- ((laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) +
- inode->i_sb->s_blocksize - 1) >> inode->i_sb->s_blocksize_bits);
- laarr[i].extLocation.logicalBlockNum = 0;
- laarr[i].extLocation.partitionReferenceNum = 0;
- laarr[i].extLength = (laarr[i].extLength & UDF_EXTENT_LENGTH_MASK) |
- EXT_NOT_RECORDED_NOT_ALLOCATED;
+ } else if ((li->extLength >> 30) ==
+ (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
+ udf_free_blocks(inode->i_sb, inode,
+ &li->extLocation, 0,
+ ((li->extLength &
+ UDF_EXTENT_LENGTH_MASK) +
+ blocksize - 1) >> blocksize_bits);
+ li->extLocation.logicalBlockNum = 0;
+ li->extLocation.partitionReferenceNum = 0;
+ li->extLength = (li->extLength &
+ UDF_EXTENT_LENGTH_MASK) |
+ EXT_NOT_RECORDED_NOT_ALLOCATED;
}
}
}
static void udf_update_extents(struct inode *inode,
- kernel_long_ad laarr[EXTENT_MERGE_SIZE], int startnum, int endnum,
- kernel_lb_addr pbloc, uint32_t pextoffset, struct buffer_head **pbh)
+ struct kernel_long_ad laarr[EXTENT_MERGE_SIZE],
+ int startnum, int endnum,
+ struct extent_position *epos)
{
int start = 0, i;
- kernel_lb_addr tmploc;
+ struct kernel_lb_addr tmploc;
uint32_t tmplen;
- if (startnum > endnum)
- {
- for (i=0; i<(startnum-endnum); i++)
- {
- udf_delete_aext(inode, pbloc, pextoffset, laarr[i].extLocation,
- laarr[i].extLength, *pbh);
- }
- }
- else if (startnum < endnum)
- {
- for (i=0; i<(endnum-startnum); i++)
- {
- udf_insert_aext(inode, pbloc, pextoffset, laarr[i].extLocation,
- laarr[i].extLength, *pbh);
- udf_next_aext(inode, &pbloc, &pextoffset, &laarr[i].extLocation,
- &laarr[i].extLength, pbh, 1);
- start ++;
+ if (startnum > endnum) {
+ for (i = 0; i < (startnum - endnum); i++)
+ udf_delete_aext(inode, *epos, laarr[i].extLocation,
+ laarr[i].extLength);
+ } else if (startnum < endnum) {
+ for (i = 0; i < (endnum - startnum); i++) {
+ udf_insert_aext(inode, *epos, laarr[i].extLocation,
+ laarr[i].extLength);
+ udf_next_aext(inode, epos, &laarr[i].extLocation,
+ &laarr[i].extLength, 1);
+ start++;
}
}
- for (i=start; i<endnum; i++)
- {
- udf_next_aext(inode, &pbloc, &pextoffset, &tmploc, &tmplen, pbh, 0);
- udf_write_aext(inode, pbloc, &pextoffset, laarr[i].extLocation,
- laarr[i].extLength, *pbh, 1);
+ for (i = start; i < endnum; i++) {
+ udf_next_aext(inode, epos, &tmploc, &tmplen, 0);
+ udf_write_aext(inode, epos, &laarr[i].extLocation,
+ laarr[i].extLength, 1);
}
}
-struct buffer_head * udf_bread(struct inode * inode, int block,
- int create, int * err)
+struct buffer_head *udf_bread(struct inode *inode, int block,
+ int create, int *err)
{
- struct buffer_head * bh = NULL;
+ struct buffer_head *bh = NULL;
bh = udf_getblk(inode, block, create, err);
if (!bh)
if (buffer_uptodate(bh))
return bh;
+
ll_rw_block(READ, 1, &bh);
+
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
+
brelse(bh);
*err = -EIO;
return NULL;
}
-void udf_truncate(struct inode * inode)
+void udf_truncate(struct inode *inode)
{
int offset;
int err;
+ struct udf_inode_info *iinfo;
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)))
+ S_ISLNK(inode->i_mode)))
return;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
lock_kernel();
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
- {
- if (inode->i_sb->s_blocksize < (udf_file_entry_alloc_offset(inode) +
- inode->i_size))
- {
+ iinfo = UDF_I(inode);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ if (inode->i_sb->s_blocksize <
+ (udf_file_entry_alloc_offset(inode) +
+ inode->i_size)) {
udf_expand_file_adinicb(inode, inode->i_size, &err);
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
- {
- inode->i_size = UDF_I_LENALLOC(inode);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ inode->i_size = iinfo->i_lenAlloc;
unlock_kernel();
return;
- }
- else
+ } else
udf_truncate_extents(inode);
- }
- else
- {
+ } else {
offset = inode->i_size & (inode->i_sb->s_blocksize - 1);
- memset(UDF_I_DATA(inode) + UDF_I_LENEATTR(inode) + offset, 0x00, inode->i_sb->s_blocksize - offset - udf_file_entry_alloc_offset(inode));
- UDF_I_LENALLOC(inode) = inode->i_size;
- }
- }
- else
- {
- block_truncate_page(inode->i_mapping, inode->i_size, udf_get_block);
+ memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + offset,
+ 0x00, inode->i_sb->s_blocksize -
+ offset - udf_file_entry_alloc_offset(inode));
+ iinfo->i_lenAlloc = inode->i_size;
+ }
+ } else {
+ block_truncate_page(inode->i_mapping, inode->i_size,
+ udf_get_block);
udf_truncate_extents(inode);
- }
+ }
inode->i_mtime = inode->i_ctime = current_fs_time(inode->i_sb);
if (IS_SYNC(inode))
- udf_sync_inode (inode);
+ udf_sync_inode(inode);
else
mark_inode_dirty(inode);
unlock_kernel();
}
-static void
-__udf_read_inode(struct inode *inode)
+static void __udf_read_inode(struct inode *inode)
{
struct buffer_head *bh = NULL;
struct fileEntry *fe;
uint16_t ident;
+ struct udf_inode_info *iinfo = UDF_I(inode);
/*
* Set defaults, but the inode is still incomplete!
* i_nlink = 1
* i_op = NULL;
*/
- inode->i_blksize = PAGE_SIZE;
-
- bh = udf_read_ptagged(inode->i_sb, UDF_I_LOCATION(inode), 0, &ident);
-
- if (!bh)
- {
+ bh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 0, &ident);
+ if (!bh) {
printk(KERN_ERR "udf: udf_read_inode(ino %ld) failed !bh\n",
- inode->i_ino);
+ inode->i_ino);
make_bad_inode(inode);
return;
}
if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE &&
- ident != TAG_IDENT_USE)
- {
- printk(KERN_ERR "udf: udf_read_inode(ino %ld) failed ident=%d\n",
- inode->i_ino, ident);
- udf_release_data(bh);
+ ident != TAG_IDENT_USE) {
+ printk(KERN_ERR "udf: udf_read_inode(ino %ld) "
+ "failed ident=%d\n", inode->i_ino, ident);
+ brelse(bh);
make_bad_inode(inode);
return;
}
fe = (struct fileEntry *)bh->b_data;
- if (le16_to_cpu(fe->icbTag.strategyType) == 4096)
- {
- struct buffer_head *ibh = NULL, *nbh = NULL;
- struct indirectEntry *ie;
-
- ibh = udf_read_ptagged(inode->i_sb, UDF_I_LOCATION(inode), 1, &ident);
- if (ident == TAG_IDENT_IE)
- {
- if (ibh)
- {
- kernel_lb_addr loc;
- ie = (struct indirectEntry *)ibh->b_data;
-
- loc = lelb_to_cpu(ie->indirectICB.extLocation);
-
- if (ie->indirectICB.extLength &&
- (nbh = udf_read_ptagged(inode->i_sb, loc, 0, &ident)))
- {
- if (ident == TAG_IDENT_FE ||
- ident == TAG_IDENT_EFE)
- {
- memcpy(&UDF_I_LOCATION(inode), &loc, sizeof(kernel_lb_addr));
- udf_release_data(bh);
- udf_release_data(ibh);
- udf_release_data(nbh);
- __udf_read_inode(inode);
- return;
- }
- else
- {
- udf_release_data(nbh);
- udf_release_data(ibh);
- }
+ if (fe->icbTag.strategyType == cpu_to_le16(4096)) {
+ struct buffer_head *ibh;
+
+ ibh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 1,
+ &ident);
+ if (ident == TAG_IDENT_IE && ibh) {
+ struct buffer_head *nbh = NULL;
+ struct kernel_lb_addr loc;
+ struct indirectEntry *ie;
+
+ ie = (struct indirectEntry *)ibh->b_data;
+ loc = lelb_to_cpu(ie->indirectICB.extLocation);
+
+ if (ie->indirectICB.extLength &&
+ (nbh = udf_read_ptagged(inode->i_sb, &loc, 0,
+ &ident))) {
+ if (ident == TAG_IDENT_FE ||
+ ident == TAG_IDENT_EFE) {
+ memcpy(&iinfo->i_location,
+ &loc,
+ sizeof(struct kernel_lb_addr));
+ brelse(bh);
+ brelse(ibh);
+ brelse(nbh);
+ __udf_read_inode(inode);
+ return;
}
- else
- udf_release_data(ibh);
+ brelse(nbh);
}
}
- else
- udf_release_data(ibh);
- }
- else if (le16_to_cpu(fe->icbTag.strategyType) != 4)
- {
+ brelse(ibh);
+ } else if (fe->icbTag.strategyType != cpu_to_le16(4)) {
printk(KERN_ERR "udf: unsupported strategy type: %d\n",
- le16_to_cpu(fe->icbTag.strategyType));
- udf_release_data(bh);
+ le16_to_cpu(fe->icbTag.strategyType));
+ brelse(bh);
make_bad_inode(inode);
return;
}
udf_fill_inode(inode, bh);
- udf_release_data(bh);
+
+ brelse(bh);
}
static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
{
struct fileEntry *fe;
struct extendedFileEntry *efe;
- time_t convtime;
- long convtime_usec;
int offset;
+ struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
+ struct udf_inode_info *iinfo = UDF_I(inode);
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
- if (le16_to_cpu(fe->icbTag.strategyType) == 4)
- UDF_I_STRAT4096(inode) = 0;
- else /* if (le16_to_cpu(fe->icbTag.strategyType) == 4096) */
- UDF_I_STRAT4096(inode) = 1;
-
- UDF_I_ALLOCTYPE(inode) = le16_to_cpu(fe->icbTag.flags) & ICBTAG_FLAG_AD_MASK;
- UDF_I_UNIQUE(inode) = 0;
- UDF_I_LENEATTR(inode) = 0;
- UDF_I_LENEXTENTS(inode) = 0;
- UDF_I_LENALLOC(inode) = 0;
- UDF_I_NEXT_ALLOC_BLOCK(inode) = 0;
- UDF_I_NEXT_ALLOC_GOAL(inode) = 0;
- if (le16_to_cpu(fe->descTag.tagIdent) == TAG_IDENT_EFE)
- {
- UDF_I_EFE(inode) = 1;
- UDF_I_USE(inode) = 0;
- UDF_I_DATA(inode) = kmalloc(inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry), GFP_KERNEL);
- memcpy(UDF_I_DATA(inode), bh->b_data + sizeof(struct extendedFileEntry), inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry));
- }
- else if (le16_to_cpu(fe->descTag.tagIdent) == TAG_IDENT_FE)
- {
- UDF_I_EFE(inode) = 0;
- UDF_I_USE(inode) = 0;
- UDF_I_DATA(inode) = kmalloc(inode->i_sb->s_blocksize - sizeof(struct fileEntry), GFP_KERNEL);
- memcpy(UDF_I_DATA(inode), bh->b_data + sizeof(struct fileEntry), inode->i_sb->s_blocksize - sizeof(struct fileEntry));
- }
- else if (le16_to_cpu(fe->descTag.tagIdent) == TAG_IDENT_USE)
- {
- UDF_I_EFE(inode) = 0;
- UDF_I_USE(inode) = 1;
- UDF_I_LENALLOC(inode) =
- le32_to_cpu(
- ((struct unallocSpaceEntry *)bh->b_data)->lengthAllocDescs);
- UDF_I_DATA(inode) = kmalloc(inode->i_sb->s_blocksize - sizeof(struct unallocSpaceEntry), GFP_KERNEL);
- memcpy(UDF_I_DATA(inode), bh->b_data + sizeof(struct unallocSpaceEntry), inode->i_sb->s_blocksize - sizeof(struct unallocSpaceEntry));
+ if (fe->icbTag.strategyType == cpu_to_le16(4))
+ iinfo->i_strat4096 = 0;
+ else /* if (fe->icbTag.strategyType == cpu_to_le16(4096)) */
+ iinfo->i_strat4096 = 1;
+
+ iinfo->i_alloc_type = le16_to_cpu(fe->icbTag.flags) &
+ ICBTAG_FLAG_AD_MASK;
+ iinfo->i_unique = 0;
+ iinfo->i_lenEAttr = 0;
+ iinfo->i_lenExtents = 0;
+ iinfo->i_lenAlloc = 0;
+ iinfo->i_next_alloc_block = 0;
+ iinfo->i_next_alloc_goal = 0;
+ if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) {
+ iinfo->i_efe = 1;
+ iinfo->i_use = 0;
+ if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+ sizeof(struct extendedFileEntry))) {
+ make_bad_inode(inode);
+ return;
+ }
+ memcpy(iinfo->i_ext.i_data,
+ bh->b_data + sizeof(struct extendedFileEntry),
+ inode->i_sb->s_blocksize -
+ sizeof(struct extendedFileEntry));
+ } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) {
+ iinfo->i_efe = 0;
+ iinfo->i_use = 0;
+ if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+ sizeof(struct fileEntry))) {
+ make_bad_inode(inode);
+ return;
+ }
+ memcpy(iinfo->i_ext.i_data,
+ bh->b_data + sizeof(struct fileEntry),
+ inode->i_sb->s_blocksize - sizeof(struct fileEntry));
+ } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) {
+ iinfo->i_efe = 0;
+ iinfo->i_use = 1;
+ iinfo->i_lenAlloc = le32_to_cpu(
+ ((struct unallocSpaceEntry *)bh->b_data)->
+ lengthAllocDescs);
+ if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize -
+ sizeof(struct unallocSpaceEntry))) {
+ make_bad_inode(inode);
+ return;
+ }
+ memcpy(iinfo->i_ext.i_data,
+ bh->b_data + sizeof(struct unallocSpaceEntry),
+ inode->i_sb->s_blocksize -
+ sizeof(struct unallocSpaceEntry));
return;
}
inode->i_uid = le32_to_cpu(fe->uid);
- if ( inode->i_uid == -1 ) inode->i_uid = UDF_SB(inode->i_sb)->s_uid;
+ if (inode->i_uid == -1 ||
+ UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_IGNORE) ||
+ UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_SET))
+ inode->i_uid = UDF_SB(inode->i_sb)->s_uid;
inode->i_gid = le32_to_cpu(fe->gid);
- if ( inode->i_gid == -1 ) inode->i_gid = UDF_SB(inode->i_sb)->s_gid;
+ if (inode->i_gid == -1 ||
+ UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_IGNORE) ||
+ UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET))
+ inode->i_gid = UDF_SB(inode->i_sb)->s_gid;
inode->i_nlink = le16_to_cpu(fe->fileLinkCount);
if (!inode->i_nlink)
inode->i_nlink = 1;
-
- inode->i_size = le64_to_cpu(fe->informationLength);
- UDF_I_LENEXTENTS(inode) = inode->i_size;
- inode->i_mode = udf_convert_permissions(fe);
- inode->i_mode &= ~UDF_SB(inode->i_sb)->s_umask;
+ inode->i_size = le64_to_cpu(fe->informationLength);
+ iinfo->i_lenExtents = inode->i_size;
+
+ if (fe->icbTag.fileType != ICBTAG_FILE_TYPE_DIRECTORY &&
+ sbi->s_fmode != UDF_INVALID_MODE)
+ inode->i_mode = sbi->s_fmode;
+ else if (fe->icbTag.fileType == ICBTAG_FILE_TYPE_DIRECTORY &&
+ sbi->s_dmode != UDF_INVALID_MODE)
+ inode->i_mode = sbi->s_dmode;
+ else
+ inode->i_mode = udf_convert_permissions(fe);
+ inode->i_mode &= ~sbi->s_umask;
- if (UDF_I_EFE(inode) == 0)
- {
+ if (iinfo->i_efe == 0) {
inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9);
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(fe->accessTime)) )
- {
- inode->i_atime.tv_sec = convtime;
- inode->i_atime.tv_nsec = convtime_usec * 1000;
- }
- else
- {
- inode->i_atime = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&inode->i_atime, fe->accessTime))
+ inode->i_atime = sbi->s_record_time;
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(fe->modificationTime)) )
- {
- inode->i_mtime.tv_sec = convtime;
- inode->i_mtime.tv_nsec = convtime_usec * 1000;
- }
- else
- {
- inode->i_mtime = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&inode->i_mtime,
+ fe->modificationTime))
+ inode->i_mtime = sbi->s_record_time;
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(fe->attrTime)) )
- {
- inode->i_ctime.tv_sec = convtime;
- inode->i_ctime.tv_nsec = convtime_usec * 1000;
- }
- else
- {
- inode->i_ctime = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&inode->i_ctime, fe->attrTime))
+ inode->i_ctime = sbi->s_record_time;
- UDF_I_UNIQUE(inode) = le64_to_cpu(fe->uniqueID);
- UDF_I_LENEATTR(inode) = le32_to_cpu(fe->lengthExtendedAttr);
- UDF_I_LENALLOC(inode) = le32_to_cpu(fe->lengthAllocDescs);
- offset = sizeof(struct fileEntry) + UDF_I_LENEATTR(inode);
- }
- else
- {
- inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
- (inode->i_sb->s_blocksize_bits - 9);
+ iinfo->i_unique = le64_to_cpu(fe->uniqueID);
+ iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr);
+ iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs);
+ offset = sizeof(struct fileEntry) + iinfo->i_lenEAttr;
+ } else {
+ inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
+ (inode->i_sb->s_blocksize_bits - 9);
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->accessTime)) )
- {
- inode->i_atime.tv_sec = convtime;
- inode->i_atime.tv_nsec = convtime_usec * 1000;
- }
- else
- {
- inode->i_atime = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&inode->i_atime, efe->accessTime))
+ inode->i_atime = sbi->s_record_time;
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->modificationTime)) )
- {
- inode->i_mtime.tv_sec = convtime;
- inode->i_mtime.tv_nsec = convtime_usec * 1000;
- }
- else
- {
- inode->i_mtime = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&inode->i_mtime,
+ efe->modificationTime))
+ inode->i_mtime = sbi->s_record_time;
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->createTime)) )
- {
- UDF_I_CRTIME(inode).tv_sec = convtime;
- UDF_I_CRTIME(inode).tv_nsec = convtime_usec * 1000;
- }
- else
- {
- UDF_I_CRTIME(inode) = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&iinfo->i_crtime, efe->createTime))
+ iinfo->i_crtime = sbi->s_record_time;
- if ( udf_stamp_to_time(&convtime, &convtime_usec,
- lets_to_cpu(efe->attrTime)) )
- {
- inode->i_ctime.tv_sec = convtime;
- inode->i_ctime.tv_nsec = convtime_usec * 1000;
- }
- else
- {
- inode->i_ctime = UDF_SB_RECORDTIME(inode->i_sb);
- }
+ if (!udf_disk_stamp_to_time(&inode->i_ctime, efe->attrTime))
+ inode->i_ctime = sbi->s_record_time;
- UDF_I_UNIQUE(inode) = le64_to_cpu(efe->uniqueID);
- UDF_I_LENEATTR(inode) = le32_to_cpu(efe->lengthExtendedAttr);
- UDF_I_LENALLOC(inode) = le32_to_cpu(efe->lengthAllocDescs);
- offset = sizeof(struct extendedFileEntry) + UDF_I_LENEATTR(inode);
+ iinfo->i_unique = le64_to_cpu(efe->uniqueID);
+ iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr);
+ iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
+ offset = sizeof(struct extendedFileEntry) +
+ iinfo->i_lenEAttr;
}
- switch (fe->icbTag.fileType)
- {
- case ICBTAG_FILE_TYPE_DIRECTORY:
- {
- inode->i_op = &udf_dir_inode_operations;
- inode->i_fop = &udf_dir_operations;
- inode->i_mode |= S_IFDIR;
- inode->i_nlink ++;
- break;
- }
- case ICBTAG_FILE_TYPE_REALTIME:
- case ICBTAG_FILE_TYPE_REGULAR:
- case ICBTAG_FILE_TYPE_UNDEF:
- {
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB)
- inode->i_data.a_ops = &udf_adinicb_aops;
- else
- inode->i_data.a_ops = &udf_aops;
- inode->i_op = &udf_file_inode_operations;
- inode->i_fop = &udf_file_operations;
- inode->i_mode |= S_IFREG;
- break;
- }
- case ICBTAG_FILE_TYPE_BLOCK:
- {
- inode->i_mode |= S_IFBLK;
- break;
- }
- case ICBTAG_FILE_TYPE_CHAR:
- {
- inode->i_mode |= S_IFCHR;
- break;
- }
- case ICBTAG_FILE_TYPE_FIFO:
- {
- init_special_inode(inode, inode->i_mode | S_IFIFO, 0);
- break;
- }
- case ICBTAG_FILE_TYPE_SOCKET:
- {
- init_special_inode(inode, inode->i_mode | S_IFSOCK, 0);
- break;
- }
- case ICBTAG_FILE_TYPE_SYMLINK:
- {
- inode->i_data.a_ops = &udf_symlink_aops;
- inode->i_op = &page_symlink_inode_operations;
- inode->i_mode = S_IFLNK|S_IRWXUGO;
- break;
- }
- default:
- {
- printk(KERN_ERR "udf: udf_fill_inode(ino %ld) failed unknown file type=%d\n",
- inode->i_ino, fe->icbTag.fileType);
- make_bad_inode(inode);
- return;
- }
+ switch (fe->icbTag.fileType) {
+ case ICBTAG_FILE_TYPE_DIRECTORY:
+ inode->i_op = &udf_dir_inode_operations;
+ inode->i_fop = &udf_dir_operations;
+ inode->i_mode |= S_IFDIR;
+ inc_nlink(inode);
+ break;
+ case ICBTAG_FILE_TYPE_REALTIME:
+ case ICBTAG_FILE_TYPE_REGULAR:
+ case ICBTAG_FILE_TYPE_UNDEF:
+ case ICBTAG_FILE_TYPE_VAT20:
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
+ inode->i_data.a_ops = &udf_adinicb_aops;
+ else
+ inode->i_data.a_ops = &udf_aops;
+ inode->i_op = &udf_file_inode_operations;
+ inode->i_fop = &udf_file_operations;
+ inode->i_mode |= S_IFREG;
+ break;
+ case ICBTAG_FILE_TYPE_BLOCK:
+ inode->i_mode |= S_IFBLK;
+ break;
+ case ICBTAG_FILE_TYPE_CHAR:
+ inode->i_mode |= S_IFCHR;
+ break;
+ case ICBTAG_FILE_TYPE_FIFO:
+ init_special_inode(inode, inode->i_mode | S_IFIFO, 0);
+ break;
+ case ICBTAG_FILE_TYPE_SOCKET:
+ init_special_inode(inode, inode->i_mode | S_IFSOCK, 0);
+ break;
+ case ICBTAG_FILE_TYPE_SYMLINK:
+ inode->i_data.a_ops = &udf_symlink_aops;
+ inode->i_op = &page_symlink_inode_operations;
+ inode->i_mode = S_IFLNK | S_IRWXUGO;
+ break;
+ case ICBTAG_FILE_TYPE_MAIN:
+ udf_debug("METADATA FILE-----\n");
+ break;
+ case ICBTAG_FILE_TYPE_MIRROR:
+ udf_debug("METADATA MIRROR FILE-----\n");
+ break;
+ case ICBTAG_FILE_TYPE_BITMAP:
+ udf_debug("METADATA BITMAP FILE-----\n");
+ break;
+ default:
+ printk(KERN_ERR "udf: udf_fill_inode(ino %ld) failed unknown "
+ "file type=%d\n", inode->i_ino,
+ fe->icbTag.fileType);
+ make_bad_inode(inode);
+ return;
}
- if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
- {
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
struct deviceSpec *dsea =
- (struct deviceSpec *)
- udf_get_extendedattr(inode, 12, 1);
-
- if (dsea)
- {
- init_special_inode(inode, inode->i_mode, MKDEV(
- le32_to_cpu(dsea->majorDeviceIdent),
- le32_to_cpu(dsea->minorDeviceIdent)));
+ (struct deviceSpec *)udf_get_extendedattr(inode, 12, 1);
+ if (dsea) {
+ init_special_inode(inode, inode->i_mode,
+ MKDEV(le32_to_cpu(dsea->majorDeviceIdent),
+ le32_to_cpu(dsea->minorDeviceIdent)));
/* Developer ID ??? */
- }
- else
- {
+ } else
make_bad_inode(inode);
- }
}
}
-static mode_t
-udf_convert_permissions(struct fileEntry *fe)
+static int udf_alloc_i_data(struct inode *inode, size_t size)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+ iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL);
+
+ if (!iinfo->i_ext.i_data) {
+ printk(KERN_ERR "udf:udf_alloc_i_data (ino %ld) "
+ "no free memory\n", inode->i_ino);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static mode_t udf_convert_permissions(struct fileEntry *fe)
{
mode_t mode;
uint32_t permissions;
permissions = le32_to_cpu(fe->permissions);
flags = le16_to_cpu(fe->icbTag.flags);
- mode = (( permissions ) & S_IRWXO) |
- (( permissions >> 2 ) & S_IRWXG) |
- (( permissions >> 4 ) & S_IRWXU) |
- (( flags & ICBTAG_FLAG_SETUID) ? S_ISUID : 0) |
- (( flags & ICBTAG_FLAG_SETGID) ? S_ISGID : 0) |
- (( flags & ICBTAG_FLAG_STICKY) ? S_ISVTX : 0);
+ mode = ((permissions) & S_IRWXO) |
+ ((permissions >> 2) & S_IRWXG) |
+ ((permissions >> 4) & S_IRWXU) |
+ ((flags & ICBTAG_FLAG_SETUID) ? S_ISUID : 0) |
+ ((flags & ICBTAG_FLAG_SETGID) ? S_ISGID : 0) |
+ ((flags & ICBTAG_FLAG_STICKY) ? S_ISVTX : 0);
return mode;
}
-/*
- * udf_write_inode
- *
- * PURPOSE
- * Write out the specified inode.
- *
- * DESCRIPTION
- * This routine is called whenever an inode is synced.
- * Currently this routine is just a placeholder.
- *
- * HISTORY
- * July 1, 1997 - Andrew E. Mileski
- * Written, tested, and released.
- */
-
-int udf_write_inode(struct inode * inode, int sync)
+int udf_write_inode(struct inode *inode, int sync)
{
int ret;
+
lock_kernel();
ret = udf_update_inode(inode, sync);
unlock_kernel();
+
return ret;
}
-int udf_sync_inode(struct inode * inode)
+int udf_sync_inode(struct inode *inode)
{
return udf_update_inode(inode, 1);
}
-static int
-udf_update_inode(struct inode *inode, int do_sync)
+static int udf_update_inode(struct inode *inode, int do_sync)
{
struct buffer_head *bh = NULL;
struct fileEntry *fe;
uint32_t udfperms;
uint16_t icbflags;
uint16_t crclen;
- int i;
- kernel_timestamp cpu_time;
int err = 0;
+ struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
+ unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
+ struct udf_inode_info *iinfo = UDF_I(inode);
bh = udf_tread(inode->i_sb,
- udf_get_lb_pblock(inode->i_sb, UDF_I_LOCATION(inode), 0));
-
- if (!bh)
- {
+ udf_get_lb_pblock(inode->i_sb,
+ &iinfo->i_location, 0));
+ if (!bh) {
udf_debug("bread failure\n");
return -EIO;
}
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
- if (le16_to_cpu(fe->descTag.tagIdent) == TAG_IDENT_USE)
- {
+ if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) {
struct unallocSpaceEntry *use =
(struct unallocSpaceEntry *)bh->b_data;
- use->lengthAllocDescs = cpu_to_le32(UDF_I_LENALLOC(inode));
- memcpy(bh->b_data + sizeof(struct unallocSpaceEntry), UDF_I_DATA(inode), inode->i_sb->s_blocksize - sizeof(struct unallocSpaceEntry));
- crclen = sizeof(struct unallocSpaceEntry) + UDF_I_LENALLOC(inode) -
- sizeof(tag);
- use->descTag.tagLocation = cpu_to_le32(UDF_I_LOCATION(inode).logicalBlockNum);
+ use->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
+ memcpy(bh->b_data + sizeof(struct unallocSpaceEntry),
+ iinfo->i_ext.i_data, inode->i_sb->s_blocksize -
+ sizeof(struct unallocSpaceEntry));
+ crclen = sizeof(struct unallocSpaceEntry) +
+ iinfo->i_lenAlloc - sizeof(struct tag);
+ use->descTag.tagLocation = cpu_to_le32(
+ iinfo->i_location.
+ logicalBlockNum);
use->descTag.descCRCLength = cpu_to_le16(crclen);
- use->descTag.descCRC = cpu_to_le16(udf_crc((char *)use + sizeof(tag), crclen, 0));
-
- use->descTag.tagChecksum = 0;
- for (i=0; i<16; i++)
- if (i != 4)
- use->descTag.tagChecksum += ((uint8_t *)&(use->descTag))[i];
+ use->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)use +
+ sizeof(struct tag),
+ crclen));
+ use->descTag.tagChecksum = udf_tag_checksum(&use->descTag);
mark_buffer_dirty(bh);
- udf_release_data(bh);
+ brelse(bh);
return err;
}
- if (inode->i_uid != UDF_SB(inode->i_sb)->s_uid)
+ if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_FORGET))
+ fe->uid = cpu_to_le32(-1);
+ else
fe->uid = cpu_to_le32(inode->i_uid);
- if (inode->i_gid != UDF_SB(inode->i_sb)->s_gid)
+ if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_FORGET))
+ fe->gid = cpu_to_le32(-1);
+ else
fe->gid = cpu_to_le32(inode->i_gid);
- udfperms = ((inode->i_mode & S_IRWXO) ) |
- ((inode->i_mode & S_IRWXG) << 2) |
- ((inode->i_mode & S_IRWXU) << 4);
+ udfperms = ((inode->i_mode & S_IRWXO)) |
+ ((inode->i_mode & S_IRWXG) << 2) |
+ ((inode->i_mode & S_IRWXU) << 4);
- udfperms |= (le32_to_cpu(fe->permissions) &
- (FE_PERM_O_DELETE | FE_PERM_O_CHATTR |
- FE_PERM_G_DELETE | FE_PERM_G_CHATTR |
- FE_PERM_U_DELETE | FE_PERM_U_CHATTR));
+ udfperms |= (le32_to_cpu(fe->permissions) &
+ (FE_PERM_O_DELETE | FE_PERM_O_CHATTR |
+ FE_PERM_G_DELETE | FE_PERM_G_CHATTR |
+ FE_PERM_U_DELETE | FE_PERM_U_CHATTR));
fe->permissions = cpu_to_le32(udfperms);
if (S_ISDIR(inode->i_mode))
fe->informationLength = cpu_to_le64(inode->i_size);
- if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
- {
- regid *eid;
+ if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
+ struct regid *eid;
struct deviceSpec *dsea =
- (struct deviceSpec *)
- udf_get_extendedattr(inode, 12, 1);
-
- if (!dsea)
- {
+ (struct deviceSpec *)udf_get_extendedattr(inode, 12, 1);
+ if (!dsea) {
dsea = (struct deviceSpec *)
udf_add_extendedattr(inode,
- sizeof(struct deviceSpec) +
- sizeof(regid), 12, 0x3);
+ sizeof(struct deviceSpec) +
+ sizeof(struct regid), 12, 0x3);
dsea->attrType = cpu_to_le32(12);
dsea->attrSubtype = 1;
- dsea->attrLength = cpu_to_le32(sizeof(struct deviceSpec) +
- sizeof(regid));
- dsea->impUseLength = cpu_to_le32(sizeof(regid));
+ dsea->attrLength = cpu_to_le32(
+ sizeof(struct deviceSpec) +
+ sizeof(struct regid));
+ dsea->impUseLength = cpu_to_le32(sizeof(struct regid));
}
- eid = (regid *)dsea->impUse;
- memset(eid, 0, sizeof(regid));
+ eid = (struct regid *)dsea->impUse;
+ memset(eid, 0, sizeof(struct regid));
strcpy(eid->ident, UDF_ID_DEVELOPER);
eid->identSuffix[0] = UDF_OS_CLASS_UNIX;
eid->identSuffix[1] = UDF_OS_ID_LINUX;
dsea->minorDeviceIdent = cpu_to_le32(iminor(inode));
}
- if (UDF_I_EFE(inode) == 0)
- {
- memcpy(bh->b_data + sizeof(struct fileEntry), UDF_I_DATA(inode), inode->i_sb->s_blocksize - sizeof(struct fileEntry));
+ if (iinfo->i_efe == 0) {
+ memcpy(bh->b_data + sizeof(struct fileEntry),
+ iinfo->i_ext.i_data,
+ inode->i_sb->s_blocksize - sizeof(struct fileEntry));
fe->logicalBlocksRecorded = cpu_to_le64(
- (inode->i_blocks + (1 << (inode->i_sb->s_blocksize_bits - 9)) - 1) >>
- (inode->i_sb->s_blocksize_bits - 9));
-
- if (udf_time_to_stamp(&cpu_time, inode->i_atime))
- fe->accessTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_mtime))
- fe->modificationTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_ctime))
- fe->attrTime = cpu_to_lets(cpu_time);
- memset(&(fe->impIdent), 0, sizeof(regid));
+ (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >>
+ (blocksize_bits - 9));
+
+ udf_time_to_disk_stamp(&fe->accessTime, inode->i_atime);
+ udf_time_to_disk_stamp(&fe->modificationTime, inode->i_mtime);
+ udf_time_to_disk_stamp(&fe->attrTime, inode->i_ctime);
+ memset(&(fe->impIdent), 0, sizeof(struct regid));
strcpy(fe->impIdent.ident, UDF_ID_DEVELOPER);
fe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
fe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- fe->uniqueID = cpu_to_le64(UDF_I_UNIQUE(inode));
- fe->lengthExtendedAttr = cpu_to_le32(UDF_I_LENEATTR(inode));
- fe->lengthAllocDescs = cpu_to_le32(UDF_I_LENALLOC(inode));
+ fe->uniqueID = cpu_to_le64(iinfo->i_unique);
+ fe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr);
+ fe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
fe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_FE);
crclen = sizeof(struct fileEntry);
- }
- else
- {
- memcpy(bh->b_data + sizeof(struct extendedFileEntry), UDF_I_DATA(inode), inode->i_sb->s_blocksize - sizeof(struct extendedFileEntry));
+ } else {
+ memcpy(bh->b_data + sizeof(struct extendedFileEntry),
+ iinfo->i_ext.i_data,
+ inode->i_sb->s_blocksize -
+ sizeof(struct extendedFileEntry));
efe->objectSize = cpu_to_le64(inode->i_size);
efe->logicalBlocksRecorded = cpu_to_le64(
- (inode->i_blocks + (1 << (inode->i_sb->s_blocksize_bits - 9)) - 1) >>
- (inode->i_sb->s_blocksize_bits - 9));
-
- if (UDF_I_CRTIME(inode).tv_sec > inode->i_atime.tv_sec ||
- (UDF_I_CRTIME(inode).tv_sec == inode->i_atime.tv_sec &&
- UDF_I_CRTIME(inode).tv_nsec > inode->i_atime.tv_nsec))
- {
- UDF_I_CRTIME(inode) = inode->i_atime;
- }
- if (UDF_I_CRTIME(inode).tv_sec > inode->i_mtime.tv_sec ||
- (UDF_I_CRTIME(inode).tv_sec == inode->i_mtime.tv_sec &&
- UDF_I_CRTIME(inode).tv_nsec > inode->i_mtime.tv_nsec))
- {
- UDF_I_CRTIME(inode) = inode->i_mtime;
- }
- if (UDF_I_CRTIME(inode).tv_sec > inode->i_ctime.tv_sec ||
- (UDF_I_CRTIME(inode).tv_sec == inode->i_ctime.tv_sec &&
- UDF_I_CRTIME(inode).tv_nsec > inode->i_ctime.tv_nsec))
- {
- UDF_I_CRTIME(inode) = inode->i_ctime;
- }
-
- if (udf_time_to_stamp(&cpu_time, inode->i_atime))
- efe->accessTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_mtime))
- efe->modificationTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, UDF_I_CRTIME(inode)))
- efe->createTime = cpu_to_lets(cpu_time);
- if (udf_time_to_stamp(&cpu_time, inode->i_ctime))
- efe->attrTime = cpu_to_lets(cpu_time);
-
- memset(&(efe->impIdent), 0, sizeof(regid));
+ (inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >>
+ (blocksize_bits - 9));
+
+ if (iinfo->i_crtime.tv_sec > inode->i_atime.tv_sec ||
+ (iinfo->i_crtime.tv_sec == inode->i_atime.tv_sec &&
+ iinfo->i_crtime.tv_nsec > inode->i_atime.tv_nsec))
+ iinfo->i_crtime = inode->i_atime;
+
+ if (iinfo->i_crtime.tv_sec > inode->i_mtime.tv_sec ||
+ (iinfo->i_crtime.tv_sec == inode->i_mtime.tv_sec &&
+ iinfo->i_crtime.tv_nsec > inode->i_mtime.tv_nsec))
+ iinfo->i_crtime = inode->i_mtime;
+
+ if (iinfo->i_crtime.tv_sec > inode->i_ctime.tv_sec ||
+ (iinfo->i_crtime.tv_sec == inode->i_ctime.tv_sec &&
+ iinfo->i_crtime.tv_nsec > inode->i_ctime.tv_nsec))
+ iinfo->i_crtime = inode->i_ctime;
+
+ udf_time_to_disk_stamp(&efe->accessTime, inode->i_atime);
+ udf_time_to_disk_stamp(&efe->modificationTime, inode->i_mtime);
+ udf_time_to_disk_stamp(&efe->createTime, iinfo->i_crtime);
+ udf_time_to_disk_stamp(&efe->attrTime, inode->i_ctime);
+
+ memset(&(efe->impIdent), 0, sizeof(struct regid));
strcpy(efe->impIdent.ident, UDF_ID_DEVELOPER);
efe->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
efe->impIdent.identSuffix[1] = UDF_OS_ID_LINUX;
- efe->uniqueID = cpu_to_le64(UDF_I_UNIQUE(inode));
- efe->lengthExtendedAttr = cpu_to_le32(UDF_I_LENEATTR(inode));
- efe->lengthAllocDescs = cpu_to_le32(UDF_I_LENALLOC(inode));
+ efe->uniqueID = cpu_to_le64(iinfo->i_unique);
+ efe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr);
+ efe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
efe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EFE);
crclen = sizeof(struct extendedFileEntry);
}
- if (UDF_I_STRAT4096(inode))
- {
+ if (iinfo->i_strat4096) {
fe->icbTag.strategyType = cpu_to_le16(4096);
fe->icbTag.strategyParameter = cpu_to_le16(1);
fe->icbTag.numEntries = cpu_to_le16(2);
- }
- else
- {
+ } else {
fe->icbTag.strategyType = cpu_to_le16(4);
fe->icbTag.numEntries = cpu_to_le16(1);
}
else if (S_ISSOCK(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_SOCKET;
- icbflags = UDF_I_ALLOCTYPE(inode) |
+ icbflags = iinfo->i_alloc_type |
((inode->i_mode & S_ISUID) ? ICBTAG_FLAG_SETUID : 0) |
((inode->i_mode & S_ISGID) ? ICBTAG_FLAG_SETGID : 0) |
((inode->i_mode & S_ISVTX) ? ICBTAG_FLAG_STICKY : 0) |
ICBTAG_FLAG_SETGID | ICBTAG_FLAG_STICKY));
fe->icbTag.flags = cpu_to_le16(icbflags);
- if (UDF_SB_UDFREV(inode->i_sb) >= 0x0200)
+ if (sbi->s_udfrev >= 0x0200)
fe->descTag.descVersion = cpu_to_le16(3);
else
fe->descTag.descVersion = cpu_to_le16(2);
- fe->descTag.tagSerialNum = cpu_to_le16(UDF_SB_SERIALNUM(inode->i_sb));
- fe->descTag.tagLocation = cpu_to_le32(UDF_I_LOCATION(inode).logicalBlockNum);
- crclen += UDF_I_LENEATTR(inode) + UDF_I_LENALLOC(inode) - sizeof(tag);
+ fe->descTag.tagSerialNum = cpu_to_le16(sbi->s_serial_number);
+ fe->descTag.tagLocation = cpu_to_le32(
+ iinfo->i_location.logicalBlockNum);
+ crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc -
+ sizeof(struct tag);
fe->descTag.descCRCLength = cpu_to_le16(crclen);
- fe->descTag.descCRC = cpu_to_le16(udf_crc((char *)fe + sizeof(tag), crclen, 0));
-
- fe->descTag.tagChecksum = 0;
- for (i=0; i<16; i++)
- if (i != 4)
- fe->descTag.tagChecksum += ((uint8_t *)&(fe->descTag))[i];
+ fe->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)fe + sizeof(struct tag),
+ crclen));
+ fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag);
/* write the data blocks */
mark_buffer_dirty(bh);
- if (do_sync)
- {
+ if (do_sync) {
sync_dirty_buffer(bh);
- if (buffer_req(bh) && !buffer_uptodate(bh))
- {
- printk("IO error syncing udf inode [%s:%08lx]\n",
- inode->i_sb->s_id, inode->i_ino);
+ if (buffer_req(bh) && !buffer_uptodate(bh)) {
+ printk(KERN_WARNING "IO error syncing udf inode "
+ "[%s:%08lx]\n", inode->i_sb->s_id,
+ inode->i_ino);
err = -EIO;
}
}
- udf_release_data(bh);
+ brelse(bh);
+
return err;
}
-struct inode *
-udf_iget(struct super_block *sb, kernel_lb_addr ino)
+struct inode *udf_iget(struct super_block *sb, struct kernel_lb_addr *ino)
{
unsigned long block = udf_get_lb_pblock(sb, ino, 0);
struct inode *inode = iget_locked(sb, block);
return NULL;
if (inode->i_state & I_NEW) {
- memcpy(&UDF_I_LOCATION(inode), &ino, sizeof(kernel_lb_addr));
+ memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr));
__udf_read_inode(inode);
unlock_new_inode(inode);
}
if (is_bad_inode(inode))
goto out_iput;
- if (ino.logicalBlockNum >= UDF_SB_PARTLEN(sb, ino.partitionReferenceNum)) {
+ if (ino->logicalBlockNum >= UDF_SB(sb)->
+ s_partmaps[ino->partitionReferenceNum].s_partition_len) {
udf_debug("block=%d, partition=%d out of range\n",
- ino.logicalBlockNum, ino.partitionReferenceNum);
+ ino->logicalBlockNum, ino->partitionReferenceNum);
make_bad_inode(inode);
goto out_iput;
}
return NULL;
}
-int8_t udf_add_aext(struct inode *inode, kernel_lb_addr *bloc, int *extoffset,
- kernel_lb_addr eloc, uint32_t elen, struct buffer_head **bh, int inc)
+int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t elen, int inc)
{
int adsize;
- short_ad *sad = NULL;
- long_ad *lad = NULL;
+ struct short_ad *sad = NULL;
+ struct long_ad *lad = NULL;
struct allocExtDesc *aed;
int8_t etype;
uint8_t *ptr;
+ struct udf_inode_info *iinfo = UDF_I(inode);
- if (!*bh)
- ptr = UDF_I_DATA(inode) + *extoffset - udf_file_entry_alloc_offset(inode) + UDF_I_LENEATTR(inode);
+ if (!epos->bh)
+ ptr = iinfo->i_ext.i_data + epos->offset -
+ udf_file_entry_alloc_offset(inode) +
+ iinfo->i_lenEAttr;
else
- ptr = (*bh)->b_data + *extoffset;
+ ptr = epos->bh->b_data + epos->offset;
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
- else if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ adsize = sizeof(struct short_ad);
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ adsize = sizeof(struct long_ad);
else
return -1;
- if (*extoffset + (2 * adsize) > inode->i_sb->s_blocksize)
- {
- char *sptr, *dptr;
+ if (epos->offset + (2 * adsize) > inode->i_sb->s_blocksize) {
+ unsigned char *sptr, *dptr;
struct buffer_head *nbh;
int err, loffset;
- kernel_lb_addr obloc = *bloc;
+ struct kernel_lb_addr obloc = epos->block;
- if (!(bloc->logicalBlockNum = udf_new_block(inode->i_sb, NULL,
- obloc.partitionReferenceNum, obloc.logicalBlockNum, &err)))
- {
+ epos->block.logicalBlockNum = udf_new_block(inode->i_sb, NULL,
+ obloc.partitionReferenceNum,
+ obloc.logicalBlockNum, &err);
+ if (!epos->block.logicalBlockNum)
return -1;
- }
- if (!(nbh = udf_tgetblk(inode->i_sb, udf_get_lb_pblock(inode->i_sb,
- *bloc, 0))))
- {
+ nbh = udf_tgetblk(inode->i_sb, udf_get_lb_pblock(inode->i_sb,
+ &epos->block,
+ 0));
+ if (!nbh)
return -1;
- }
lock_buffer(nbh);
memset(nbh->b_data, 0x00, inode->i_sb->s_blocksize);
set_buffer_uptodate(nbh);
aed = (struct allocExtDesc *)(nbh->b_data);
if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT))
- aed->previousAllocExtLocation = cpu_to_le32(obloc.logicalBlockNum);
- if (*extoffset + adsize > inode->i_sb->s_blocksize)
- {
- loffset = *extoffset;
+ aed->previousAllocExtLocation =
+ cpu_to_le32(obloc.logicalBlockNum);
+ if (epos->offset + adsize > inode->i_sb->s_blocksize) {
+ loffset = epos->offset;
aed->lengthAllocDescs = cpu_to_le32(adsize);
sptr = ptr - adsize;
dptr = nbh->b_data + sizeof(struct allocExtDesc);
memcpy(dptr, sptr, adsize);
- *extoffset = sizeof(struct allocExtDesc) + adsize;
- }
- else
- {
- loffset = *extoffset + adsize;
+ epos->offset = sizeof(struct allocExtDesc) + adsize;
+ } else {
+ loffset = epos->offset + adsize;
aed->lengthAllocDescs = cpu_to_le32(0);
sptr = ptr;
- *extoffset = sizeof(struct allocExtDesc);
+ epos->offset = sizeof(struct allocExtDesc);
- if (*bh)
- {
- aed = (struct allocExtDesc *)(*bh)->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) + adsize);
- }
- else
- {
- UDF_I_LENALLOC(inode) += adsize;
+ if (epos->bh) {
+ aed = (struct allocExtDesc *)epos->bh->b_data;
+ le32_add_cpu(&aed->lengthAllocDescs, adsize);
+ } else {
+ iinfo->i_lenAlloc += adsize;
mark_inode_dirty(inode);
}
}
- if (UDF_SB_UDFREV(inode->i_sb) >= 0x0200)
+ if (UDF_SB(inode->i_sb)->s_udfrev >= 0x0200)
udf_new_tag(nbh->b_data, TAG_IDENT_AED, 3, 1,
- bloc->logicalBlockNum, sizeof(tag));
+ epos->block.logicalBlockNum, sizeof(struct tag));
else
udf_new_tag(nbh->b_data, TAG_IDENT_AED, 2, 1,
- bloc->logicalBlockNum, sizeof(tag));
- switch (UDF_I_ALLOCTYPE(inode))
- {
- case ICBTAG_FLAG_AD_SHORT:
- {
- sad = (short_ad *)sptr;
- sad->extLength = cpu_to_le32(
- EXT_NEXT_EXTENT_ALLOCDECS |
- inode->i_sb->s_blocksize);
- sad->extPosition = cpu_to_le32(bloc->logicalBlockNum);
- break;
- }
- case ICBTAG_FLAG_AD_LONG:
- {
- lad = (long_ad *)sptr;
- lad->extLength = cpu_to_le32(
- EXT_NEXT_EXTENT_ALLOCDECS |
- inode->i_sb->s_blocksize);
- lad->extLocation = cpu_to_lelb(*bloc);
- memset(lad->impUse, 0x00, sizeof(lad->impUse));
- break;
- }
+ epos->block.logicalBlockNum, sizeof(struct tag));
+ switch (iinfo->i_alloc_type) {
+ case ICBTAG_FLAG_AD_SHORT:
+ sad = (struct short_ad *)sptr;
+ sad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS |
+ inode->i_sb->s_blocksize);
+ sad->extPosition =
+ cpu_to_le32(epos->block.logicalBlockNum);
+ break;
+ case ICBTAG_FLAG_AD_LONG:
+ lad = (struct long_ad *)sptr;
+ lad->extLength = cpu_to_le32(EXT_NEXT_EXTENT_ALLOCDECS |
+ inode->i_sb->s_blocksize);
+ lad->extLocation = cpu_to_lelb(epos->block);
+ memset(lad->impUse, 0x00, sizeof(lad->impUse));
+ break;
}
- if (*bh)
- {
- if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
- udf_update_tag((*bh)->b_data, loffset);
+ if (epos->bh) {
+ if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
+ UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
+ udf_update_tag(epos->bh->b_data, loffset);
else
- udf_update_tag((*bh)->b_data, sizeof(struct allocExtDesc));
- mark_buffer_dirty_inode(*bh, inode);
- udf_release_data(*bh);
- }
- else
+ udf_update_tag(epos->bh->b_data,
+ sizeof(struct allocExtDesc));
+ mark_buffer_dirty_inode(epos->bh, inode);
+ brelse(epos->bh);
+ } else {
mark_inode_dirty(inode);
- *bh = nbh;
+ }
+ epos->bh = nbh;
}
- etype = udf_write_aext(inode, *bloc, extoffset, eloc, elen, *bh, inc);
+ etype = udf_write_aext(inode, epos, eloc, elen, inc);
- if (!*bh)
- {
- UDF_I_LENALLOC(inode) += adsize;
+ if (!epos->bh) {
+ iinfo->i_lenAlloc += adsize;
mark_inode_dirty(inode);
- }
- else
- {
- aed = (struct allocExtDesc *)(*bh)->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) + adsize);
- if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
- udf_update_tag((*bh)->b_data, *extoffset + (inc ? 0 : adsize));
+ } else {
+ aed = (struct allocExtDesc *)epos->bh->b_data;
+ le32_add_cpu(&aed->lengthAllocDescs, adsize);
+ if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
+ UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
+ udf_update_tag(epos->bh->b_data,
+ epos->offset + (inc ? 0 : adsize));
else
- udf_update_tag((*bh)->b_data, sizeof(struct allocExtDesc));
- mark_buffer_dirty_inode(*bh, inode);
+ udf_update_tag(epos->bh->b_data,
+ sizeof(struct allocExtDesc));
+ mark_buffer_dirty_inode(epos->bh, inode);
}
return etype;
}
-int8_t udf_write_aext(struct inode *inode, kernel_lb_addr bloc, int *extoffset,
- kernel_lb_addr eloc, uint32_t elen, struct buffer_head *bh, int inc)
+int8_t udf_write_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t elen, int inc)
{
int adsize;
uint8_t *ptr;
-
- if (!bh)
- ptr = UDF_I_DATA(inode) + *extoffset - udf_file_entry_alloc_offset(inode) + UDF_I_LENEATTR(inode);
+ struct short_ad *sad;
+ struct long_ad *lad;
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ if (!epos->bh)
+ ptr = iinfo->i_ext.i_data + epos->offset -
+ udf_file_entry_alloc_offset(inode) +
+ iinfo->i_lenEAttr;
else
- {
- ptr = bh->b_data + *extoffset;
- atomic_inc(&bh->b_count);
- }
-
- switch (UDF_I_ALLOCTYPE(inode))
- {
- case ICBTAG_FLAG_AD_SHORT:
- {
- short_ad *sad = (short_ad *)ptr;
- sad->extLength = cpu_to_le32(elen);
- sad->extPosition = cpu_to_le32(eloc.logicalBlockNum);
- adsize = sizeof(short_ad);
- break;
- }
- case ICBTAG_FLAG_AD_LONG:
- {
- long_ad *lad = (long_ad *)ptr;
- lad->extLength = cpu_to_le32(elen);
- lad->extLocation = cpu_to_lelb(eloc);
- memset(lad->impUse, 0x00, sizeof(lad->impUse));
- adsize = sizeof(long_ad);
- break;
- }
- default:
- return -1;
+ ptr = epos->bh->b_data + epos->offset;
+
+ switch (iinfo->i_alloc_type) {
+ case ICBTAG_FLAG_AD_SHORT:
+ sad = (struct short_ad *)ptr;
+ sad->extLength = cpu_to_le32(elen);
+ sad->extPosition = cpu_to_le32(eloc->logicalBlockNum);
+ adsize = sizeof(struct short_ad);
+ break;
+ case ICBTAG_FLAG_AD_LONG:
+ lad = (struct long_ad *)ptr;
+ lad->extLength = cpu_to_le32(elen);
+ lad->extLocation = cpu_to_lelb(*eloc);
+ memset(lad->impUse, 0x00, sizeof(lad->impUse));
+ adsize = sizeof(struct long_ad);
+ break;
+ default:
+ return -1;
}
- if (bh)
- {
- if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
- {
- struct allocExtDesc *aed = (struct allocExtDesc *)(bh)->b_data;
- udf_update_tag((bh)->b_data,
- le32_to_cpu(aed->lengthAllocDescs) + sizeof(struct allocExtDesc));
- }
- mark_buffer_dirty_inode(bh, inode);
- udf_release_data(bh);
- }
- else
+ if (epos->bh) {
+ if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
+ UDF_SB(inode->i_sb)->s_udfrev >= 0x0201) {
+ struct allocExtDesc *aed =
+ (struct allocExtDesc *)epos->bh->b_data;
+ udf_update_tag(epos->bh->b_data,
+ le32_to_cpu(aed->lengthAllocDescs) +
+ sizeof(struct allocExtDesc));
+ }
+ mark_buffer_dirty_inode(epos->bh, inode);
+ } else {
mark_inode_dirty(inode);
+ }
if (inc)
- *extoffset += adsize;
+ epos->offset += adsize;
+
return (elen >> 30);
}
-int8_t udf_next_aext(struct inode *inode, kernel_lb_addr *bloc, int *extoffset,
- kernel_lb_addr *eloc, uint32_t *elen, struct buffer_head **bh, int inc)
+int8_t udf_next_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t *elen, int inc)
{
int8_t etype;
- while ((etype = udf_current_aext(inode, bloc, extoffset, eloc, elen, bh, inc)) ==
- (EXT_NEXT_EXTENT_ALLOCDECS >> 30))
- {
- *bloc = *eloc;
- *extoffset = sizeof(struct allocExtDesc);
- udf_release_data(*bh);
- if (!(*bh = udf_tread(inode->i_sb, udf_get_lb_pblock(inode->i_sb, *bloc, 0))))
- {
- udf_debug("reading block %d failed!\n",
- udf_get_lb_pblock(inode->i_sb, *bloc, 0));
+ while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) ==
+ (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
+ int block;
+ epos->block = *eloc;
+ epos->offset = sizeof(struct allocExtDesc);
+ brelse(epos->bh);
+ block = udf_get_lb_pblock(inode->i_sb, &epos->block, 0);
+ epos->bh = udf_tread(inode->i_sb, block);
+ if (!epos->bh) {
+ udf_debug("reading block %d failed!\n", block);
return -1;
}
}
return etype;
}
-int8_t udf_current_aext(struct inode *inode, kernel_lb_addr *bloc, int *extoffset,
- kernel_lb_addr *eloc, uint32_t *elen, struct buffer_head **bh, int inc)
+int8_t udf_current_aext(struct inode *inode, struct extent_position *epos,
+ struct kernel_lb_addr *eloc, uint32_t *elen, int inc)
{
int alen;
int8_t etype;
uint8_t *ptr;
-
- if (!*bh)
- {
- if (!(*extoffset))
- *extoffset = udf_file_entry_alloc_offset(inode);
- ptr = UDF_I_DATA(inode) + *extoffset - udf_file_entry_alloc_offset(inode) + UDF_I_LENEATTR(inode);
- alen = udf_file_entry_alloc_offset(inode) + UDF_I_LENALLOC(inode);
- }
- else
- {
- if (!(*extoffset))
- *extoffset = sizeof(struct allocExtDesc);
- ptr = (*bh)->b_data + *extoffset;
- alen = sizeof(struct allocExtDesc) + le32_to_cpu(((struct allocExtDesc *)(*bh)->b_data)->lengthAllocDescs);
+ struct short_ad *sad;
+ struct long_ad *lad;
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ if (!epos->bh) {
+ if (!epos->offset)
+ epos->offset = udf_file_entry_alloc_offset(inode);
+ ptr = iinfo->i_ext.i_data + epos->offset -
+ udf_file_entry_alloc_offset(inode) +
+ iinfo->i_lenEAttr;
+ alen = udf_file_entry_alloc_offset(inode) +
+ iinfo->i_lenAlloc;
+ } else {
+ if (!epos->offset)
+ epos->offset = sizeof(struct allocExtDesc);
+ ptr = epos->bh->b_data + epos->offset;
+ alen = sizeof(struct allocExtDesc) +
+ le32_to_cpu(((struct allocExtDesc *)epos->bh->b_data)->
+ lengthAllocDescs);
}
- switch (UDF_I_ALLOCTYPE(inode))
- {
- case ICBTAG_FLAG_AD_SHORT:
- {
- short_ad *sad;
-
- if (!(sad = udf_get_fileshortad(ptr, alen, extoffset, inc)))
- return -1;
-
- etype = le32_to_cpu(sad->extLength) >> 30;
- eloc->logicalBlockNum = le32_to_cpu(sad->extPosition);
- eloc->partitionReferenceNum = UDF_I_LOCATION(inode).partitionReferenceNum;
- *elen = le32_to_cpu(sad->extLength) & UDF_EXTENT_LENGTH_MASK;
- break;
- }
- case ICBTAG_FLAG_AD_LONG:
- {
- long_ad *lad;
-
- if (!(lad = udf_get_filelongad(ptr, alen, extoffset, inc)))
- return -1;
-
- etype = le32_to_cpu(lad->extLength) >> 30;
- *eloc = lelb_to_cpu(lad->extLocation);
- *elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK;
- break;
- }
- default:
- {
- udf_debug("alloc_type = %d unsupported\n", UDF_I_ALLOCTYPE(inode));
+ switch (iinfo->i_alloc_type) {
+ case ICBTAG_FLAG_AD_SHORT:
+ sad = udf_get_fileshortad(ptr, alen, &epos->offset, inc);
+ if (!sad)
return -1;
- }
+ etype = le32_to_cpu(sad->extLength) >> 30;
+ eloc->logicalBlockNum = le32_to_cpu(sad->extPosition);
+ eloc->partitionReferenceNum =
+ iinfo->i_location.partitionReferenceNum;
+ *elen = le32_to_cpu(sad->extLength) & UDF_EXTENT_LENGTH_MASK;
+ break;
+ case ICBTAG_FLAG_AD_LONG:
+ lad = udf_get_filelongad(ptr, alen, &epos->offset, inc);
+ if (!lad)
+ return -1;
+ etype = le32_to_cpu(lad->extLength) >> 30;
+ *eloc = lelb_to_cpu(lad->extLocation);
+ *elen = le32_to_cpu(lad->extLength) & UDF_EXTENT_LENGTH_MASK;
+ break;
+ default:
+ udf_debug("alloc_type = %d unsupported\n",
+ iinfo->i_alloc_type);
+ return -1;
}
return etype;
}
-static int8_t
-udf_insert_aext(struct inode *inode, kernel_lb_addr bloc, int extoffset,
- kernel_lb_addr neloc, uint32_t nelen, struct buffer_head *bh)
+static int8_t udf_insert_aext(struct inode *inode, struct extent_position epos,
+ struct kernel_lb_addr neloc, uint32_t nelen)
{
- kernel_lb_addr oeloc;
+ struct kernel_lb_addr oeloc;
uint32_t oelen;
int8_t etype;
- if (bh)
- atomic_inc(&bh->b_count);
-
- while ((etype = udf_next_aext(inode, &bloc, &extoffset, &oeloc, &oelen, &bh, 0)) != -1)
- {
- udf_write_aext(inode, bloc, &extoffset, neloc, nelen, bh, 1);
+ if (epos.bh)
+ get_bh(epos.bh);
+ while ((etype = udf_next_aext(inode, &epos, &oeloc, &oelen, 0)) != -1) {
+ udf_write_aext(inode, &epos, &neloc, nelen, 1);
neloc = oeloc;
nelen = (etype << 30) | oelen;
}
- udf_add_aext(inode, &bloc, &extoffset, neloc, nelen, &bh, 1);
- udf_release_data(bh);
+ udf_add_aext(inode, &epos, &neloc, nelen, 1);
+ brelse(epos.bh);
+
return (nelen >> 30);
}
-int8_t udf_delete_aext(struct inode *inode, kernel_lb_addr nbloc, int nextoffset,
- kernel_lb_addr eloc, uint32_t elen, struct buffer_head *nbh)
+int8_t udf_delete_aext(struct inode *inode, struct extent_position epos,
+ struct kernel_lb_addr eloc, uint32_t elen)
{
- struct buffer_head *obh;
- kernel_lb_addr obloc;
- int oextoffset, adsize;
+ struct extent_position oepos;
+ int adsize;
int8_t etype;
struct allocExtDesc *aed;
+ struct udf_inode_info *iinfo;
- if (nbh)
- {
- atomic_inc(&nbh->b_count);
- atomic_inc(&nbh->b_count);
+ if (epos.bh) {
+ get_bh(epos.bh);
+ get_bh(epos.bh);
}
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_SHORT)
- adsize = sizeof(short_ad);
- else if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_LONG)
- adsize = sizeof(long_ad);
+ iinfo = UDF_I(inode);
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
+ adsize = sizeof(struct short_ad);
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
+ adsize = sizeof(struct long_ad);
else
adsize = 0;
- obh = nbh;
- obloc = nbloc;
- oextoffset = nextoffset;
-
- if (udf_next_aext(inode, &nbloc, &nextoffset, &eloc, &elen, &nbh, 1) == -1)
+ oepos = epos;
+ if (udf_next_aext(inode, &epos, &eloc, &elen, 1) == -1)
return -1;
- while ((etype = udf_next_aext(inode, &nbloc, &nextoffset, &eloc, &elen, &nbh, 1)) != -1)
- {
- udf_write_aext(inode, obloc, &oextoffset, eloc, (etype << 30) | elen, obh, 1);
- if (obh != nbh)
- {
- obloc = nbloc;
- udf_release_data(obh);
- atomic_inc(&nbh->b_count);
- obh = nbh;
- oextoffset = nextoffset - adsize;
+ while ((etype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) {
+ udf_write_aext(inode, &oepos, &eloc, (etype << 30) | elen, 1);
+ if (oepos.bh != epos.bh) {
+ oepos.block = epos.block;
+ brelse(oepos.bh);
+ get_bh(epos.bh);
+ oepos.bh = epos.bh;
+ oepos.offset = epos.offset - adsize;
}
}
- memset(&eloc, 0x00, sizeof(kernel_lb_addr));
+ memset(&eloc, 0x00, sizeof(struct kernel_lb_addr));
elen = 0;
- if (nbh != obh)
- {
- udf_free_blocks(inode->i_sb, inode, nbloc, 0, 1);
- udf_write_aext(inode, obloc, &oextoffset, eloc, elen, obh, 1);
- udf_write_aext(inode, obloc, &oextoffset, eloc, elen, obh, 1);
- if (!obh)
- {
- UDF_I_LENALLOC(inode) -= (adsize * 2);
+ if (epos.bh != oepos.bh) {
+ udf_free_blocks(inode->i_sb, inode, &epos.block, 0, 1);
+ udf_write_aext(inode, &oepos, &eloc, elen, 1);
+ udf_write_aext(inode, &oepos, &eloc, elen, 1);
+ if (!oepos.bh) {
+ iinfo->i_lenAlloc -= (adsize * 2);
mark_inode_dirty(inode);
- }
- else
- {
- aed = (struct allocExtDesc *)(obh)->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) - (2*adsize));
- if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
- udf_update_tag((obh)->b_data, oextoffset - (2*adsize));
+ } else {
+ aed = (struct allocExtDesc *)oepos.bh->b_data;
+ le32_add_cpu(&aed->lengthAllocDescs, -(2 * adsize));
+ if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
+ UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
+ udf_update_tag(oepos.bh->b_data,
+ oepos.offset - (2 * adsize));
else
- udf_update_tag((obh)->b_data, sizeof(struct allocExtDesc));
- mark_buffer_dirty_inode(obh, inode);
- }
- }
- else
- {
- udf_write_aext(inode, obloc, &oextoffset, eloc, elen, obh, 1);
- if (!obh)
- {
- UDF_I_LENALLOC(inode) -= adsize;
+ udf_update_tag(oepos.bh->b_data,
+ sizeof(struct allocExtDesc));
+ mark_buffer_dirty_inode(oepos.bh, inode);
+ }
+ } else {
+ udf_write_aext(inode, &oepos, &eloc, elen, 1);
+ if (!oepos.bh) {
+ iinfo->i_lenAlloc -= adsize;
mark_inode_dirty(inode);
- }
- else
- {
- aed = (struct allocExtDesc *)(obh)->b_data;
- aed->lengthAllocDescs =
- cpu_to_le32(le32_to_cpu(aed->lengthAllocDescs) - adsize);
- if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) || UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
- udf_update_tag((obh)->b_data, oextoffset - adsize);
+ } else {
+ aed = (struct allocExtDesc *)oepos.bh->b_data;
+ le32_add_cpu(&aed->lengthAllocDescs, -adsize);
+ if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
+ UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
+ udf_update_tag(oepos.bh->b_data,
+ epos.offset - adsize);
else
- udf_update_tag((obh)->b_data, sizeof(struct allocExtDesc));
- mark_buffer_dirty_inode(obh, inode);
+ udf_update_tag(oepos.bh->b_data,
+ sizeof(struct allocExtDesc));
+ mark_buffer_dirty_inode(oepos.bh, inode);
}
}
-
- udf_release_data(nbh);
- udf_release_data(obh);
+
+ brelse(epos.bh);
+ brelse(oepos.bh);
+
return (elen >> 30);
}
-int8_t inode_bmap(struct inode *inode, int block, kernel_lb_addr *bloc, uint32_t *extoffset,
- kernel_lb_addr *eloc, uint32_t *elen, uint32_t *offset, struct buffer_head **bh)
+int8_t inode_bmap(struct inode *inode, sector_t block,
+ struct extent_position *pos, struct kernel_lb_addr *eloc,
+ uint32_t *elen, sector_t *offset)
{
- uint64_t lbcount = 0, bcount = (uint64_t)block << inode->i_sb->s_blocksize_bits;
+ unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
+ loff_t lbcount = 0, bcount =
+ (loff_t) block << blocksize_bits;
int8_t etype;
+ struct udf_inode_info *iinfo;
- if (block < 0)
- {
- printk(KERN_ERR "udf: inode_bmap: block < 0\n");
- return -1;
- }
- if (!inode)
- {
- printk(KERN_ERR "udf: inode_bmap: NULL inode\n");
- return -1;
- }
-
- *extoffset = 0;
+ iinfo = UDF_I(inode);
+ pos->offset = 0;
+ pos->block = iinfo->i_location;
+ pos->bh = NULL;
*elen = 0;
- *bloc = UDF_I_LOCATION(inode);
-
- do
- {
- if ((etype = udf_next_aext(inode, bloc, extoffset, eloc, elen, bh, 1)) == -1)
- {
- *offset = bcount - lbcount;
- UDF_I_LENEXTENTS(inode) = lbcount;
+
+ do {
+ etype = udf_next_aext(inode, pos, eloc, elen, 1);
+ if (etype == -1) {
+ *offset = (bcount - lbcount) >> blocksize_bits;
+ iinfo->i_lenExtents = lbcount;
return -1;
}
lbcount += *elen;
} while (lbcount <= bcount);
- *offset = bcount + *elen - lbcount;
+ *offset = (bcount + *elen - lbcount) >> blocksize_bits;
return etype;
}
-long udf_block_map(struct inode *inode, long block)
+long udf_block_map(struct inode *inode, sector_t block)
{
- kernel_lb_addr eloc, bloc;
- uint32_t offset, extoffset, elen;
- struct buffer_head *bh = NULL;
+ struct kernel_lb_addr eloc;
+ uint32_t elen;
+ sector_t offset;
+ struct extent_position epos = {};
int ret;
lock_kernel();
- if (inode_bmap(inode, block, &bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
- ret = udf_get_lb_pblock(inode->i_sb, eloc, offset >> inode->i_sb->s_blocksize_bits);
+ if (inode_bmap(inode, block, &epos, &eloc, &elen, &offset) ==
+ (EXT_RECORDED_ALLOCATED >> 30))
+ ret = udf_get_lb_pblock(inode->i_sb, &eloc, offset);
else
ret = 0;
unlock_kernel();
- udf_release_data(bh);
+ brelse(epos.bh);
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_VARCONV))
return udf_fixed_to_variable(ret);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff