Release 4.18 fs/udf/inode.c
/*
* inode.c
*
* PURPOSE
* Inode handling routines for the OSTA-UDF(tm) filesystem.
*
* COPYRIGHT
* This file is distributed under the terms of the GNU General Public
* License (GPL). Copies of the GPL can be obtained from:
* ftp://prep.ai.mit.edu/pub/gnu/GPL
* Each contributing author retains all rights to their own work.
*
* (C) 1998 Dave Boynton
* (C) 1998-2004 Ben Fennema
* (C) 1999-2000 Stelias Computing Inc
*
* HISTORY
*
* 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
* 12/12/98 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
* 03/07/99 rewrote udf_block_map (again)
* New funcs, inode_bmap, udf_next_aext
* 04/19/99 Support for writing device EA's for major/minor #
*/
#include "udfdecl.h"
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/writeback.h>
#include <linux/slab.h>
#include <linux/crc-itu-t.h>
#include <linux/mpage.h>
#include <linux/uio.h>
#include <linux/bio.h>
#include "udf_i.h"
#include "udf_sb.h"
#define EXTENT_MERGE_SIZE 5
static umode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int);
static int udf_sync_inode(struct inode *inode);
static int udf_alloc_i_data(struct inode *inode, size_t size);
static sector_t inode_getblk(struct inode *, sector_t, int *, 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, udf_pblk_t,
struct kernel_long_ad *, int *);
static void udf_prealloc_extents(struct inode *, int, int,
struct kernel_long_ad *, int *);
static void udf_merge_extents(struct inode *, struct kernel_long_ad *, int *);
static void udf_update_extents(struct inode *, struct kernel_long_ad *, int,
int, struct extent_position *);
static int udf_get_block(struct inode *, sector_t, struct buffer_head *, int);
static void __udf_clear_extent_cache(struct inode *inode)
{
struct udf_inode_info *iinfo = UDF_I(inode);
if (iinfo->cached_extent.lstart != -1) {
brelse(iinfo->cached_extent.epos.bh);
iinfo->cached_extent.lstart = -1;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Namjae Jeon | 54 | 100.00% | 1 | 100.00% |
| Total | 54 | 100.00% | 1 | 100.00% |
/* Invalidate extent cache */
static void udf_clear_extent_cache(struct inode *inode)
{
struct udf_inode_info *iinfo = UDF_I(inode);
spin_lock(&iinfo->i_extent_cache_lock);
__udf_clear_extent_cache(inode);
spin_unlock(&iinfo->i_extent_cache_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Namjae Jeon | 42 | 100.00% | 1 | 100.00% |
| Total | 42 | 100.00% | 1 | 100.00% |
/* Return contents of extent cache */
static int udf_read_extent_cache(struct inode *inode, loff_t bcount,
loff_t *lbcount, struct extent_position *pos)
{
struct udf_inode_info *iinfo = UDF_I(inode);
int ret = 0;
spin_lock(&iinfo->i_extent_cache_lock);
if ((iinfo->cached_extent.lstart <= bcount) &&
(iinfo->cached_extent.lstart != -1)) {
/* Cache hit */
*lbcount = iinfo->cached_extent.lstart;
memcpy(pos, &iinfo->cached_extent.epos,
sizeof(struct extent_position));
if (pos->bh)
get_bh(pos->bh);
ret = 1;
}
spin_unlock(&iinfo->i_extent_cache_lock);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Namjae Jeon | 127 | 100.00% | 1 | 100.00% |
| Total | 127 | 100.00% | 1 | 100.00% |
/* Add extent to extent cache */
static void udf_update_extent_cache(struct inode *inode, loff_t estart,
struct extent_position *pos)
{
struct udf_inode_info *iinfo = UDF_I(inode);
spin_lock(&iinfo->i_extent_cache_lock);
/* Invalidate previously cached extent */
__udf_clear_extent_cache(inode);
if (pos->bh)
get_bh(pos->bh);
memcpy(&iinfo->cached_extent.epos, pos, sizeof(*pos));
iinfo->cached_extent.lstart = estart;
switch (iinfo->i_alloc_type) {
case ICBTAG_FLAG_AD_SHORT:
iinfo->cached_extent.epos.offset -= sizeof(struct short_ad);
break;
case ICBTAG_FLAG_AD_LONG:
iinfo->cached_extent.epos.offset -= sizeof(struct long_ad);
break;
}
spin_unlock(&iinfo->i_extent_cache_lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Namjae Jeon | 131 | 97.76% | 1 | 33.33% |
| SF Markus Elfring | 2 | 1.49% | 1 | 33.33% |
| Fabian Frederick | 1 | 0.75% | 1 | 33.33% |
| Total | 134 | 100.00% | 3 | 100.00% |
void udf_evict_inode(struct inode *inode)
{
struct udf_inode_info *iinfo = UDF_I(inode);
int want_delete = 0;
if (!inode->i_nlink && !is_bad_inode(inode)) {
want_delete = 1;
udf_setsize(inode, 0);
udf_update_inode(inode, IS_SYNC(inode));
}
truncate_inode_pages_final(&inode->i_data);
invalidate_inode_buffers(inode);
clear_inode(inode);
if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB &&
inode->i_size != iinfo->i_lenExtents) {
udf_warn(inode->i_sb, "Inode %lu (mode %o) has inode size %llu different from extent length %llu. Filesystem need not be standards compliant.\n",
inode->i_ino, inode->i_mode,
(unsigned long long)inode->i_size,
(unsigned long long)iinfo->i_lenExtents);
}
kfree(iinfo->i_ext.i_data);
iinfo->i_ext.i_data = NULL;
udf_clear_extent_cache(inode);
if (want_delete) {
udf_free_inode(inode);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 54 | 32.73% | 5 | 27.78% |
| Al Viro | 44 | 26.67% | 2 | 11.11% |
| Linus Torvalds (pre-git) | 29 | 17.58% | 3 | 16.67% |
| Marcin Ślusarz | 13 | 7.88% | 2 | 11.11% |
| Christoph Hellwig | 7 | 4.24% | 1 | 5.56% |
| Namjae Jeon | 5 | 3.03% | 1 | 5.56% |
| Ben Fennema | 5 | 3.03% | 1 | 5.56% |
| Linus Torvalds | 4 | 2.42% | 1 | 5.56% |
| Joe Perches | 3 | 1.82% | 1 | 5.56% |
| Johannes Weiner | 1 | 0.61% | 1 | 5.56% |
| Total | 165 | 100.00% | 18 | 100.00% |
static void udf_write_failed(struct address_space *mapping, loff_t to)
{
struct inode *inode = mapping->host;
struct udf_inode_info *iinfo = UDF_I(inode);
loff_t isize = inode->i_size;
if (to > isize) {
truncate_pagecache(inode, isize);
if (iinfo->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) {
down_write(&iinfo->i_data_sem);
udf_clear_extent_cache(inode);
udf_truncate_extents(inode);
up_write(&iinfo->i_data_sem);
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ian Abbott | 86 | 94.51% | 1 | 50.00% |
| Namjae Jeon | 5 | 5.49% | 1 | 50.00% |
| Total | 91 | 100.00% | 2 | 100.00% |
static int udf_writepage(struct page *page, struct writeback_control *wbc)
{
return block_write_full_page(page, udf_get_block, wbc);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 19 | 73.08% | 1 | 50.00% |
| Andrew Morton | 7 | 26.92% | 1 | 50.00% |
| Total | 26 | 100.00% | 2 | 100.00% |
static int udf_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
return mpage_writepages(mapping, wbc, udf_get_block);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Namjae Jeon | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
static int udf_readpage(struct file *file, struct page *page)
{
return mpage_readpage(page, udf_get_block);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 23 | 95.83% | 2 | 66.67% |
| Namjae Jeon | 1 | 4.17% | 1 | 33.33% |
| Total | 24 | 100.00% | 3 | 100.00% |
static int udf_readpages(struct file *file, struct address_space *mapping,
struct list_head *pages, unsigned nr_pages)
{
return mpage_readpages(mapping, pages, nr_pages, udf_get_block);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Namjae Jeon | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
static int udf_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
int ret;
ret = block_write_begin(mapping, pos, len, flags, pagep, udf_get_block);
if (unlikely(ret))
udf_write_failed(mapping, pos + len);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 29 | 38.67% | 1 | 20.00% |
| Linus Torvalds (pre-git) | 21 | 28.00% | 2 | 40.00% |
| Ian Abbott | 13 | 17.33% | 1 | 20.00% |
| Christoph Hellwig | 12 | 16.00% | 1 | 20.00% |
| Total | 75 | 100.00% | 5 | 100.00% |
static ssize_t udf_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
size_t count = iov_iter_count(iter);
ssize_t ret;
ret = blockdev_direct_IO(iocb, inode, iter, udf_get_block);
if (unlikely(ret < 0 && iov_iter_rw(iter) == WRITE))
udf_write_failed(mapping, iocb->ki_pos + count);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ian Abbott | 47 | 48.45% | 1 | 12.50% |
| Jan Kara | 17 | 17.53% | 1 | 12.50% |
| Christoph Hellwig | 14 | 14.43% | 2 | 25.00% |
| Al Viro | 12 | 12.37% | 2 | 25.00% |
| Omar Sandoval | 5 | 5.15% | 1 | 12.50% |
| Linus Torvalds (pre-git) | 2 | 2.06% | 1 | 12.50% |
| Total | 97 | 100.00% | 8 | 100.00% |
static sector_t udf_bmap(struct address_space *mapping, sector_t block)
{
return generic_block_bmap(mapping, block, udf_get_block);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 22 | 91.67% | 1 | 50.00% |
| Andrew Morton | 2 | 8.33% | 1 | 50.00% |
| Total | 24 | 100.00% | 2 | 100.00% |
const struct address_space_operations udf_aops = {
.readpage = udf_readpage,
.readpages = udf_readpages,
.writepage = udf_writepage,
.writepages = udf_writepages,
.write_begin = udf_write_begin,
.write_end = generic_write_end,
.direct_IO = udf_direct_IO,
.bmap = udf_bmap,
};
/*
* Expand file stored in ICB to a normal one-block-file
*
* This function requires i_data_sem for writing and releases it.
* This function requires i_mutex held
*/
int udf_expand_file_adinicb(struct inode *inode)
{
struct page *page;
char *kaddr;
struct udf_inode_info *iinfo = UDF_I(inode);
int err;
struct writeback_control udf_wbc = {
.sync_mode = WB_SYNC_NONE,
.nr_to_write = 1,
};
WARN_ON_ONCE(!inode_is_locked(inode));
if (!iinfo->i_lenAlloc) {
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
else
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
up_write(&iinfo->i_data_sem);
mark_inode_dirty(inode);
return 0;
}
/*
* Release i_data_sem so that we can lock a page - page lock ranks
* above i_data_sem. i_mutex still protects us against file changes.
*/
up_write(&iinfo->i_data_sem);
page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS);
if (!page)
return -ENOMEM;
if (!PageUptodate(page)) {
kaddr = kmap_atomic(page);
memset(kaddr + iinfo->i_lenAlloc, 0x00,
PAGE_SIZE - iinfo->i_lenAlloc);
memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr,
iinfo->i_lenAlloc);
flush_dcache_page(page);
SetPageUptodate(page);
kunmap_atomic(kaddr);
}
down_write(&iinfo->i_data_sem);
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))
iinfo->i_alloc_type = ICBTAG_FLAG_AD_SHORT;
else
iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG;
/* from now on we have normal address_space methods */
inode->i_data.a_ops = &udf_aops;
up_write(&iinfo->i_data_sem);
err = inode->i_data.a_ops->writepage(page, &udf_wbc);
if (err) {
/* Restore everything back so that we don't lose data... */
lock_page(page);
down_write(&iinfo->i_data_sem);
kaddr = kmap_atomic(page);
memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr,
inode->i_size);
kunmap_atomic(kaddr);
unlock_page(page);
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
inode->i_data.a_ops = &udf_adinicb_aops;
up_write(&iinfo->i_data_sem);
}
put_page(page);
mark_inode_dirty(inode);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 153 | 38.44% | 3 | 15.79% |
| Linus Torvalds (pre-git) | 143 | 35.93% | 6 | 31.58% |
| Marcin Ślusarz | 56 | 14.07% | 2 | 10.53% |
| Andrew Morton | 20 | 5.03% | 2 | 10.53% |
| Fabian Frederick | 12 | 3.02% | 1 | 5.26% |
| Linus Torvalds | 6 | 1.51% | 1 | 5.26% |
| Ben Fennema | 5 | 1.26% | 2 | 10.53% |
| Kirill A. Shutemov | 2 | 0.50% | 1 | 5.26% |
| Al Viro | 1 | 0.25% | 1 | 5.26% |
| Total | 398 | 100.00% | 19 | 100.00% |
struct buffer_head *udf_expand_dir_adinicb(struct inode *inode,
udf_pblk_t *block, int *err)
{
udf_pblk_t newblock;
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);
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) {
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,
iinfo->i_location.partitionReferenceNum,
iinfo->i_location.logicalBlockNum, err);
if (!(*block))
return NULL;
newblock = udf_get_pblock(inode->i_sb, *block,
iinfo->i_location.partitionReferenceNum,
0);
if (!newblock)
return NULL;
dbh = udf_tgetblk(inode->i_sb, newblock);
if (!dbh)
return NULL;
lock_buffer(dbh);
memset(dbh->b_data, 0x00, inode->i_sb->s_blocksize);
set_buffer_uptodate(dbh);
unlock_buffer(dbh);
mark_buffer_dirty_inode(dbh, inode);
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) {
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;
}
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))) {
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
brelse(dbh);
return NULL;
}
}
mark_buffer_dirty_inode(dbh, inode);
memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0,
iinfo->i_lenAlloc);
iinfo->i_lenAlloc = 0;
eloc.logicalBlockNum = *block;
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 */
brelse(epos.bh);
mark_inode_dirty(inode);
return dbh;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 396 | 69.47% | 4 | 21.05% |
| Marcin Ślusarz | 54 | 9.47% | 2 | 10.53% |
| Linus Torvalds | 48 | 8.42% | 2 | 10.53% |
| Jan Kara | 31 | 5.44% | 3 | 15.79% |
| Ben Fennema | 29 | 5.09% | 2 | 10.53% |
| Al Viro | 7 | 1.23% | 2 | 10.53% |
| Pekka J Enberg | 2 | 0.35% | 2 | 10.53% |
| Steven J. Magnani | 2 | 0.35% | 1 | 5.26% |
| Andrew Morton | 1 | 0.18% | 1 | 5.26% |
| Total | 570 | 100.00% | 19 | 100.00% |
static int udf_get_block(struct inode *inode, sector_t block,
struct buffer_head *bh_result, int create)
{
int err, new;
sector_t phys = 0;
struct udf_inode_info *iinfo;
if (!create) {
phys = udf_block_map(inode, block);
if (phys)
map_bh(bh_result, inode->i_sb, phys);
return 0;
}
err = -EIO;
new = 0;
iinfo = UDF_I(inode);
down_write(&iinfo->i_data_sem);
if (block == iinfo->i_next_alloc_block + 1) {
iinfo->i_next_alloc_block++;
iinfo->i_next_alloc_goal++;
}
udf_clear_extent_cache(inode);
phys = inode_getblk(inode, block, &err, &new);
if (!phys)
goto abort;
if (new)
set_buffer_new(bh_result);
map_bh(bh_result, inode->i_sb, phys);
abort:
up_write(&iinfo->i_data_sem);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 109 | 61.24% | 3 | 25.00% |
| Marcin Ślusarz | 25 | 14.04% | 3 | 25.00% |
| Linus Torvalds | 18 | 10.11% | 2 | 16.67% |
| Alessio Igor Bogani | 15 | 8.43% | 1 | 8.33% |
| Namjae Jeon | 5 | 2.81% | 1 | 8.33% |
| Andrew Morton | 3 | 1.69% | 1 | 8.33% |
| Jan Kara | 3 | 1.69% | 1 | 8.33% |
| Total | 178 | 100.00% | 12 | 100.00% |
static struct buffer_head *udf_getblk(struct inode *inode, udf_pblk_t 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)) {
bh = sb_getblk(inode->i_sb, dummy.b_blocknr);
if (buffer_new(&dummy)) {
lock_buffer(bh);
memset(bh->b_data, 0x00, inode->i_sb->s_blocksize);
set_buffer_uptodate(bh);
unlock_buffer(bh);
mark_buffer_dirty_inode(bh, inode);
}
return bh;
}
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 114 | 81.43% | 2 | 25.00% |
| Linus Torvalds | 18 | 12.86% | 2 | 25.00% |
| Cyrill V. Gorcunov | 5 | 3.57% | 1 | 12.50% |
| Andries E. Brouwer | 1 | 0.71% | 1 | 12.50% |
| Andrew Morton | 1 | 0.71% | 1 | 12.50% |
| Steven J. Magnani | 1 | 0.71% | 1 | 12.50% |
| Total | 140 | 100.00% | 8 | 100.00% |
/* Extend the file by 'blocks' blocks, return the number of extents added */
static int udf_do_extend_file(struct inode *inode,
struct extent_position *last_pos,
struct kernel_long_ad *last_ext,
sector_t blocks)
{
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 = {};
uint32_t prealloc_len = 0;
struct udf_inode_info *iinfo;
int err;
/* 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 {
struct kernel_lb_addr tmploc;
uint32_t tmplen;
udf_write_aext(inode, last_pos, &last_ext->extLocation,
last_ext->extLength, 1);
/*
* We've rewritten the last extent but there may be empty
* indirect extent after it - enter it.
*/
udf_next_aext(inode, last_pos, &tmploc, &tmplen, 0);
}
/* 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;
err = udf_add_aext(inode, last_pos, &last_ext->extLocation,
last_ext->extLength, 1);
if (err)
return err;
count++;
}
if (blocks) {
last_ext->extLength = EXT_NOT_RECORDED_NOT_ALLOCATED |
(blocks << sb->s_blocksize_bits);
err = udf_add_aext(inode, last_pos, &last_ext->extLocation,
last_ext->extLength, 1);
if (err)
return err;
count++;
}
out:
/* Do we have some preallocated blocks saved? */
if (prealloc_len) {
err = udf_add_aext(inode, last_pos, &prealloc_loc,
prealloc_len, 1);
if (err)
return err;
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 -EIO;
return count;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 576 | 94.89% | 3 | 33.33% |
| Marcin Ślusarz | 21 | 3.46% | 2 | 22.22% |
| Pekka J Enberg | 8 | 1.32% | 2 | 22.22% |
| Steven J. Magnani | 1 | 0.16% | 1 | 11.11% |
| Cyrill V. Gorcunov | 1 | 0.16% | 1 | 11.11% |
| Total | 607 | 100.00% | 9 | 100.00% |
static int udf_extend_file(struct inode *inode, loff_t newsize)
{
struct extent_position epos;
struct kernel_lb_addr eloc;
uint32_t elen;
int8_t etype;
struct super_block *sb = inode->i_sb;
sector_t first_block = newsize >> sb->s_blocksize_bits, offset;
int adsize;
struct udf_inode_info *iinfo = UDF_I(inode);
struct kernel_long_ad extent;
int err;
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
BUG();
etype = inode_bmap(inode, first_block, &epos, &eloc, &elen, &offset);
/* File has extent covering the new size (could happen when extending
* inside a block)? */
if (etype != -1)
return 0;
if (newsize & (sb->s_blocksize - 1))
offset++;
/* Extended file just to the boundary of the last file block? */
if (offset == 0)
return 0;
/* Truncate is extending the file by 'offset' blocks */
if ((!epos.bh && epos.offset == udf_file_entry_alloc_offset(inode)) ||
(epos.bh && epos.offset == sizeof(struct allocExtDesc))) {
/* File has no extents at all or has empty last
* indirect extent! Create a fake extent... */
extent.extLocation.logicalBlockNum = 0;
extent.extLocation.partitionReferenceNum = 0;
extent.extLength = EXT_NOT_RECORDED_NOT_ALLOCATED;
} else {
epos.offset -= adsize;
etype = udf_next_aext(inode, &epos, &extent.extLocation,
&extent.extLength, 0);
extent.extLength |= etype << 30;
}
err = udf_do_extend_file(inode, &epos, &extent, offset);
if (err < 0)
goto out;
err = 0;
iinfo->i_lenExtents = newsize;
out:
brelse(epos.bh);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 305 | 99.35% | 2 | 50.00% |
| Marcin Ślusarz | 2 | 0.65% | 2 | 50.00% |
| Total | 307 | 100.00% | 4 | 100.00% |
static sector_t inode_getblk(struct inode *inode, sector_t block,
int *err, int *new)
{
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, tmpelen;
struct kernel_lb_addr eloc, tmpeloc;
int c = 1;
loff_t lbcount = 0, b_off = 0;
udf_pblk_t newblocknum, newblock;
sector_t offset = 0;
int8_t etype;
struct udf_inode_info *iinfo = UDF_I(inode);
udf_pblk_t goal = 0, pgoal = iinfo->i_location.logicalBlockNum;
int lastblock = 0;
bool isBeyondEOF;
*err = 0;
*new = 0;
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 (prev_epos.bh != cur_epos.bh) {
brelse(prev_epos.bh);
get_bh(cur_epos.bh);
prev_epos.bh = cur_epos.bh;
}
if (cur_epos.bh != next_epos.bh) {
brelse(cur_epos.bh);
get_bh(next_epos.bh);
cur_epos.bh = next_epos.bh;
}
lbcount += elen;
prev_epos.block = cur_epos.block;
cur_epos.block = next_epos.block;
prev_epos.offset = cur_epos.offset;
cur_epos.offset = next_epos.offset;
etype = udf_next_aext(inode, &next_epos, &eloc, &elen, 1);
if (etype == -1)
break;
c = !c;
laarr[c].extLength = (etype << 30) | elen;
laarr[c].extLocation = eloc;
if (etype != (EXT_NOT_RECORDED_NOT_ALLOCATED >> 30))
pgoal = eloc.logicalBlockNum +
((elen + inode->i_sb->s_blocksize - 1) >>
inode->i_sb->s_blocksize_bits);
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 (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));
udf_write_aext(inode, &cur_epos, &eloc, elen, 1);
}
newblock = udf_get_lb_pblock(inode->i_sb, &eloc, offset);
goto out_free;
}
/* Are we beyond EOF? */
if (etype == -1) {
int ret;
isBeyondEOF = true;
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_do_extend_file() create real extent from
a fake one? */
startnum = (offset > 0);
}
/* Create extents for the hole between EOF and offset */
ret = udf_do_extend_file(inode, &prev_epos, laarr, offset);
if (ret < 0) {
*err = ret;
newblock = 0;
goto out_free;
}
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 = c + 1;
lastblock = 1;
} else {
isBeyondEOF = false;
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 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;
}
/* if the current extent is not recorded but allocated, get the
* 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 (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;
}
newblocknum = udf_new_block(inode->i_sb, inode,
iinfo->i_location.partitionReferenceNum,
goal, err);
if (!newblocknum) {
*err = -ENOSPC;
newblock = 0;
goto out_free;
}
if (isBeyondEOF)
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 */
udf_split_extents(inode, &c, offset, newblocknum, 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);
/* 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, &prev_epos);
newblock = udf_get_pblock(inode->i_sb, newblocknum,
iinfo->i_location.partitionReferenceNum, 0);
if (!newblock) {
*err = -EIO;
goto out_free;
}
*new = 1;
iinfo->i_next_alloc_block = block;
iinfo->i_next_alloc_goal = newblocknum;
inode->i_ctime = current_time(inode);
if (IS_SYNC(inode))
udf_sync_inode(inode);
else
mark_inode_dirty(inode);
out_free:
brelse(prev_epos.bh);
brelse(cur_epos.bh);
brelse(next_epos.bh);
return newblock;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 701 | 59.91% | 5 | 16.67% |
| Jan Kara | 279 | 23.85% | 8 | 26.67% |
| Marcin Ślusarz | 62 | 5.30% | 3 | 10.00% |
| Fabian Frederick | 43 | 3.68% | 2 | 6.67% |
| Linus Torvalds | 34 | 2.91% | 2 | 6.67% |
| Ben Fennema | 19 | 1.62% | 1 | 3.33% |
| Namjae Jeon | 13 | 1.11% | 1 | 3.33% |
| Pekka J Enberg | 5 | 0.43% | 2 | 6.67% |
| Cyrill V. Gorcunov | 5 | 0.43% | 2 | 6.67% |
| Andi Kleen | 3 | 0.26% | 1 | 3.33% |
| Al Viro | 3 | 0.26% | 1 | 3.33% |
| Steven J. Magnani | 2 | 0.17% | 1 | 3.33% |
| Deepa Dinamani | 1 | 0.09% | 1 | 3.33% |
| Total | 1170 | 100.00% | 30 | 100.00% |
static void udf_split_extents(struct inode *inode, int *c, int offset,
udf_pblk_t newblocknum,
struct kernel_long_ad *laarr, 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)) {
int curr = *c;
int blen = ((laarr[curr].extLength & UDF_EXTENT_LENGTH_MASK) +
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 << blocksize_bits);
laarr[curr].extLocation.logicalBlockNum = 0;
laarr[curr].extLocation.
partitionReferenceNum = 0;
} else
laarr[curr].extLength = (etype << 30) |
(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(inode)->i_location.partitionReferenceNum;
laarr[curr].extLength = EXT_RECORDED_ALLOCATED |
blocksize;
curr++;
if (blen != offset + 1) {
if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30))
laarr[curr].extLocation.logicalBlockNum +=
offset + 1;
laarr[curr].extLength = (etype << 30) |
((blen - (offset + 1)) << blocksize_bits);
curr++;
(*endnum)++;
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 306 | 68.30% | 1 | 9.09% |
| Linus Torvalds | 62 | 13.84% | 1 | 9.09% |
| Marcin Ślusarz | 29 | 6.47% | 2 | 18.18% |
| Ben Fennema | 27 | 6.03% | 1 | 9.09% |
| Andrew Morton | 19 | 4.24% | 1 | 9.09% |
| Pekka J Enberg | 2 | 0.45% | 2 | 18.18% |
| Steven J. Magnani | 1 | 0.22% | 1 | 9.09% |
| Al Viro | 1 | 0.22% | 1 | 9.09% |
| Fabian Frederick | 1 | 0.22% | 1 | 9.09% |
| Total | 448 | 100.00% | 11 | 100.00% |
static void udf_prealloc_extents(struct inode *inode, int c, int lastblock,
struct kernel_long_ad *laarr,
int *endnum)
{
int start, length = 0, currlength = 0, i;
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
start = c;
}
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
break;
}
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);
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].extLength +=
(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;
if (elen > numalloc) {
laarr[i].extLength -=
(numalloc <<
inode->i_sb->s_blocksize_bits);
numalloc = 0;
} else {
numalloc -= elen;
if (*endnum > (i + 1))
memmove(&laarr[i],
&laarr[i + 1],
sizeof(struct long_ad) *
(*endnum - (i + 1)));
i--;
(*endnum)--;
}
}
UDF_I(inode)->i_lenExtents +=
numalloc << inode->i_sb->s_blocksize_bits;
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 543 | 90.50% | 2 | 16.67% |
| Ben Fennema | 24 | 4.00% | 3 | 25.00% |
| Linus Torvalds | 23 | 3.83% | 2 | 16.67% |
| Pekka J Enberg | 3 | 0.50% | 1 | 8.33% |
| Marcin Ślusarz | 3 | 0.50% | 1 | 8.33% |
| Cyrill V. Gorcunov | 2 | 0.33% | 1 | 8.33% |
| Al Viro | 1 | 0.17% | 1 | 8.33% |
| Fabian Frederick | 1 | 0.17% | 1 | 8.33% |
| Total | 600 | 100.00% | 12 | 100.00% |
static void udf_merge_extents(struct inode *inode, struct kernel_long_ad *laarr,
int *endnum)
{
int i;
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 (((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 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;
}
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Andrew Morton | 295 | 43.07% | 1 | 11.11% |
| Linus Torvalds (pre-git) | 224 | 32.70% | 2 | 22.22% |
| Marcin Ślusarz | 152 | 22.19% | 1 | 11.11% |
| Pekka J Enberg | 7 | 1.02% | 2 | 22.22% |
| Ben Fennema | 5 | 0.73% | 1 | 11.11% |
| Fabian Frederick | 1 | 0.15% | 1 | 11.11% |
| Al Viro | 1 | 0.15% | 1 | 11.11% |
| Total | 685 | 100.00% | 9 | 100.00% |
static void udf_update_extents(struct inode *inode, struct kernel_long_ad *laarr,
int startnum, int endnum,
struct extent_position *epos)
{
int start = 0, i;
struct kernel_lb_addr tmploc;
uint32_t tmplen;
if (startnum > endnum) {
for (i = 0; i < (startnum - endnum); i++)
udf_delete_aext(inode, *epos);
} 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, epos, &tmploc, &tmplen, 0);
udf_write_aext(inode, epos, &laarr[i].extLocation,
laarr[i].extLength, 1);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 190 | 92.23% | 1 | 14.29% |
| Jan Kara | 9 | 4.37% | 1 | 14.29% |
| Pekka J Enberg | 3 | 1.46% | 2 | 28.57% |
| Al Viro | 2 | 0.97% | 1 | 14.29% |
| Ben Fennema | 1 | 0.49% | 1 | 14.29% |
| Fabian Frederick | 1 | 0.49% | 1 | 14.29% |
| Total | 206 | 100.00% | 7 | 100.00% |
struct buffer_head *udf_bread(struct inode *inode, udf_pblk_t block,
int create, int *err)
{
struct buffer_head *bh = NULL;
bh = udf_getblk(inode, block, create, err);
if (!bh)
return NULL;
if (buffer_uptodate(bh))
return bh;
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
brelse(bh);
*err = -EIO;
return NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 97 | 96.04% | 1 | 33.33% |
| Michael Christie | 3 | 2.97% | 1 | 33.33% |
| Steven J. Magnani | 1 | 0.99% | 1 | 33.33% |
| Total | 101 | 100.00% | 3 | 100.00% |
int udf_setsize(struct inode *inode, loff_t newsize)
{
int err;
struct udf_inode_info *iinfo;
unsigned int bsize = i_blocksize(inode);
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
S_ISLNK(inode->i_mode)))
return -EINVAL;
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return -EPERM;
iinfo = UDF_I(inode);
if (newsize > inode->i_size) {
down_write(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
if (bsize <
(udf_file_entry_alloc_offset(inode) + newsize)) {
err = udf_expand_file_adinicb(inode);
if (err)
return err;
down_write(&iinfo->i_data_sem);
} else {
iinfo->i_lenAlloc = newsize;
goto set_size;
}
}
err = udf_extend_file(inode, newsize);
if (err) {
up_write(&iinfo->i_data_sem);
return err;
}
set_size:
up_write(&iinfo->i_data_sem);
truncate_setsize(inode, newsize);
} else {
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
down_write(&iinfo->i_data_sem);
udf_clear_extent_cache(inode);
memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + newsize,
0x00, bsize - newsize -
udf_file_entry_alloc_offset(inode));
iinfo->i_lenAlloc = newsize;
truncate_setsize(inode, newsize);
up_write(&iinfo->i_data_sem);
goto update_time;
}
err = block_truncate_page(inode->i_mapping, newsize,
udf_get_block);
if (err)
return err;
truncate_setsize(inode, newsize);
down_write(&iinfo->i_data_sem);
udf_clear_extent_cache(inode);
udf_truncate_extents(inode);
up_write(&iinfo->i_data_sem);
}
update_time:
inode->i_mtime = inode->i_ctime = current_time(inode);
if (IS_SYNC(inode))
udf_sync_inode(inode);
else
mark_inode_dirty(inode);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 128 | 34.78% | 3 | 17.65% |
| Linus Torvalds | 104 | 28.26% | 1 | 5.88% |
| Linus Torvalds (pre-git) | 40 | 10.87% | 2 | 11.76% |
| Alessio Igor Bogani | 39 | 10.60% | 1 | 5.88% |
| Marcin Ślusarz | 26 | 7.07% | 2 | 11.76% |
| Namjae Jeon | 10 | 2.72% | 1 | 5.88% |
| Ian Abbott | 7 | 1.90% | 1 | 5.88% |
| Ben Fennema | 5 | 1.36% | 1 | 5.88% |
| Fabian Frederick | 3 | 0.82% | 1 | 5.88% |
| Andi Kleen | 3 | 0.82% | 1 | 5.88% |
| Al Viro | 1 | 0.27% | 1 | 5.88% |
| Deepa Dinamani | 1 | 0.27% | 1 | 5.88% |
| Steven J. Magnani | 1 | 0.27% | 1 | 5.88% |
| Total | 368 | 100.00% | 17 | 100.00% |
/*
* Maximum length of linked list formed by ICB hierarchy. The chosen number is
* arbitrary - just that we hopefully don't limit any real use of rewritten
* inode on write-once media but avoid looping for too long on corrupted media.
*/
#define UDF_MAX_ICB_NESTING 1024
static int udf_read_inode(struct inode *inode, bool hidden_inode)
{
struct buffer_head *bh = NULL;
struct fileEntry *fe;
struct extendedFileEntry *efe;
uint16_t ident;
struct udf_inode_info *iinfo = UDF_I(inode);
struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
struct kernel_lb_addr *iloc = &iinfo->i_location;
struct timespec ts;
unsigned int link_count;
unsigned int indirections = 0;
int bs = inode->i_sb->s_blocksize;
int ret = -EIO;
uint32_t uid, gid;
reread:
if (iloc->partitionReferenceNum >= sbi->s_partitions) {
udf_debug("partition reference: %u > logical volume partitions: %u\n",
iloc->partitionReferenceNum, sbi->s_partitions);
return -EIO;
}
if (iloc->logicalBlockNum >=
sbi->s_partmaps[iloc->partitionReferenceNum].s_partition_len) {
udf_debug("block=%u, partition=%u out of range\n",
iloc->logicalBlockNum, iloc->partitionReferenceNum);
return -EIO;
}
/*
* Set defaults, but the inode is still incomplete!
* Note: get_new_inode() sets the following on a new inode:
* i_sb = sb
* i_no = ino
* i_flags = sb->s_flags
* i_state = 0
* clean_inode(): zero fills and sets
* i_count = 1
* i_nlink = 1
* i_op = NULL;
*/
bh = udf_read_ptagged(inode->i_sb, iloc, 0, &ident);
if (!bh) {
udf_err(inode->i_sb, "(ino %lu) failed !bh\n", inode->i_ino);
return -EIO;
}
if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE &&
ident != TAG_IDENT_USE) {
udf_err(inode->i_sb, "(ino %lu) failed ident=%u\n",
inode->i_ino, ident);
goto out;
}
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
if (fe->icbTag.strategyType == cpu_to_le16(4096)) {
struct buffer_head *ibh;
ibh = udf_read_ptagged(inode->i_sb, iloc, 1, &ident);
if (ident == TAG_IDENT_IE && ibh) {
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) {
brelse(ibh);
memcpy(&iinfo->i_location, &loc,
sizeof(struct kernel_lb_addr));
if (++indirections > UDF_MAX_ICB_NESTING) {
udf_err(inode->i_sb,
"too many ICBs in ICB hierarchy"
" (max %d supported)\n",
UDF_MAX_ICB_NESTING);
goto out;
}
brelse(bh);
goto reread;
}
}
brelse(ibh);
} else if (fe->icbTag.strategyType != cpu_to_le16(4)) {
udf_err(inode->i_sb, "unsupported strategy type: %u\n",
le16_to_cpu(fe->icbTag.strategyType));
goto out;
}
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;
ret = udf_alloc_i_data(inode, bs -
sizeof(struct extendedFileEntry));
if (ret)
goto out;
memcpy(iinfo->i_ext.i_data,
bh->b_data + sizeof(struct extendedFileEntry),
bs - sizeof(struct extendedFileEntry));
} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) {
iinfo->i_efe = 0;
iinfo->i_use = 0;
ret = udf_alloc_i_data(inode, bs - sizeof(struct fileEntry));
if (ret)
goto out;
memcpy(iinfo->i_ext.i_data,
bh->b_data + sizeof(struct fileEntry),
bs - 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);
ret = udf_alloc_i_data(inode, bs -
sizeof(struct unallocSpaceEntry));
if (ret)
goto out;
memcpy(iinfo->i_ext.i_data,
bh->b_data + sizeof(struct unallocSpaceEntry),
bs - sizeof(struct unallocSpaceEntry));
return 0;
}
ret = -EIO;
read_lock(&sbi->s_cred_lock);
uid = le32_to_cpu(fe->uid);
if (uid == UDF_INVALID_ID ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_SET))
inode->i_uid = sbi->s_uid;
else
i_uid_write(inode, uid);
gid = le32_to_cpu(fe->gid);
if (gid == UDF_INVALID_ID ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET))
inode->i_gid = sbi->s_gid;
else
i_gid_write(inode, gid);
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;
read_unlock(&sbi->s_cred_lock);
link_count = le16_to_cpu(fe->fileLinkCount);
if (!link_count) {
if (!hidden_inode) {
ret = -ESTALE;
goto out;
}
link_count = 1;
}
set_nlink(inode, link_count);
inode->i_size = le64_to_cpu(fe->informationLength);
iinfo->i_lenExtents = inode->i_size;
if (iinfo->i_efe == 0) {
inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9);
udf_disk_stamp_to_time(&ts, fe->accessTime);
inode->i_atime = timespec_to_timespec64(ts);
udf_disk_stamp_to_time(&ts, fe->modificationTime);
inode->i_mtime = timespec_to_timespec64(ts);
udf_disk_stamp_to_time(&ts, fe->attrTime);
inode->i_ctime = timespec_to_timespec64(ts);
iinfo->i_unique = le64_to_cpu(fe->uniqueID);
iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs);
iinfo->i_checkpoint = le32_to_cpu(fe->checkpoint);
} else {
inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9);
udf_disk_stamp_to_time(&ts, efe->accessTime);
inode->i_atime = timespec_to_timespec64(ts);
udf_disk_stamp_to_time(&ts, efe->modificationTime);
inode->i_mtime = timespec_to_timespec64(ts);
udf_disk_stamp_to_time(&iinfo->i_crtime, efe->createTime);
udf_disk_stamp_to_time(&ts, efe->attrTime);
inode->i_ctime = timespec_to_timespec64(ts);
iinfo->i_unique = le64_to_cpu(efe->uniqueID);
iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
}
inode->i_generation = iinfo->i_unique;
/*
* Sanity check length of allocation descriptors and extended attrs to
* avoid integer overflows
*/
if (iinfo->i_lenEAttr > bs || iinfo->i_lenAlloc > bs)
goto out;
/* Now do exact checks */
if (udf_file_entry_alloc_offset(inode) + iinfo->i_lenAlloc > bs)
goto out;
/* Sanity checks for files in ICB so that we don't get confused later */
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
/*
* For file in ICB data is stored in allocation descriptor
* so sizes should match
*/
if (iinfo->i_lenAlloc != inode->i_size)
goto out;
/* File in ICB has to fit in there... */
if (inode->i_size > bs - udf_file_entry_alloc_offset(inode))
goto out;
}
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 = &udf_symlink_inode_operations;
inode_nohighmem(inode);
inode->i_mode = S_IFLNK | 0777;
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:
udf_err(inode->i_sb, "(ino %lu) failed unknown file type=%u\n",
inode->i_ino, fe->icbTag.fileType);
goto out;
}
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)));
/* Developer ID ??? */
} else
goto out;
}
ret = 0;
out:
brelse(bh);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 502 | 29.77% | 7 | 12.73% |
| Jan Kara | 423 | 25.09% | 15 | 27.27% |
| Linus Torvalds | 223 | 13.23% | 3 | 5.45% |
| Marcin Ślusarz | 194 | 11.51% | 8 | 14.55% |
| Ben Fennema | 130 | 7.71% | 2 | 3.64% |
| Deepa Dinamani | 64 | 3.80% | 1 | 1.82% |
| Fabian Frederick | 29 | 1.72% | 2 | 3.64% |
| Steve Nickel | 22 | 1.30% | 1 | 1.82% |
| Joe Perches | 20 | 1.19% | 1 | 1.82% |
| Andrew Morton | 17 | 1.01% | 1 | 1.82% |
| Phillip Susi | 14 | 0.83% | 1 | 1.82% |
| Cyrill V. Gorcunov | 14 | 0.83% | 3 | 5.45% |
| Al Viro | 11 | 0.65% | 3 | 5.45% |
| Miklos Szeredi | 9 | 0.53% | 1 | 1.82% |
| Steven J. Magnani | 6 | 0.36% | 1 | 1.82% |
| Dave Hansen | 3 | 0.18% | 1 | 1.82% |
| Eric W. Biedermann | 2 | 0.12% | 1 | 1.82% |
| Andries E. Brouwer | 2 | 0.12% | 2 | 3.64% |
| Pekka J Enberg | 1 | 0.06% | 1 | 1.82% |
| Total | 1686 | 100.00% | 55 | 100.00% |
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)
return -ENOMEM;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Cyrill V. Gorcunov | 36 | 67.92% | 1 | 33.33% |
| Marcin Ślusarz | 17 | 32.08% | 2 | 66.67% |
| Total | 53 | 100.00% | 3 | 100.00% |
static umode_t udf_convert_permissions(struct fileEntry *fe)
{
umode_t mode;
uint32_t permissions;
uint32_t flags;
permissions = le32_to_cpu(fe->permissions);
flags = le16_to_cpu(fe->icbTag.flags);
mode = ((permissions) & 0007) |
((permissions >> 2) & 0070) |
((permissions >> 4) & 0700) |
((flags & ICBTAG_FLAG_SETUID) ? S_ISUID : 0) |
((flags & ICBTAG_FLAG_SETGID) ? S_ISGID : 0) |
((flags & ICBTAG_FLAG_STICKY) ? S_ISVTX : 0);
return mode;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 98 | 89.91% | 1 | 25.00% |
| Ben Fennema | 6 | 5.50% | 1 | 25.00% |
| Fabian Frederick | 3 | 2.75% | 1 | 25.00% |
| Al Viro | 2 | 1.83% | 1 | 25.00% |
| Total | 109 | 100.00% | 4 | 100.00% |
int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
{
return udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 15 | 55.56% | 2 | 40.00% |
| Christoph Hellwig | 9 | 33.33% | 1 | 20.00% |
| Andrey V. Savochkin | 2 | 7.41% | 1 | 20.00% |
| Jan Kara | 1 | 3.70% | 1 | 20.00% |
| Total | 27 | 100.00% | 5 | 100.00% |
static int udf_sync_inode(struct inode *inode)
{
return udf_update_inode(inode, 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 18 | 94.74% | 1 | 50.00% |
| Jan Kara | 1 | 5.26% | 1 | 50.00% |
| Total | 19 | 100.00% | 2 | 100.00% |
static void udf_adjust_time(struct udf_inode_info *iinfo, struct timespec time)
{
if (iinfo->i_crtime.tv_sec > time.tv_sec ||
(iinfo->i_crtime.tv_sec == time.tv_sec &&
iinfo->i_crtime.tv_nsec > time.tv_nsec))
iinfo->i_crtime = time;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Fabian Frederick | 55 | 100.00% | 1 | 100.00% |
| Total | 55 | 100.00% | 1 | 100.00% |
static int udf_update_inode(struct inode *inode, int do_sync)
{
struct buffer_head *bh = NULL;
struct fileEntry *fe;
struct extendedFileEntry *efe;
uint64_t lb_recorded;
uint32_t udfperms;
uint16_t icbflags;
uint16_t crclen;
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_tgetblk(inode->i_sb,
udf_get_lb_pblock(inode->i_sb, &iinfo->i_location, 0));
if (!bh) {
udf_debug("getblk failure\n");
return -EIO;
}
lock_buffer(bh);
memset(bh->b_data, 0, inode->i_sb->s_blocksize);
fe = (struct fileEntry *)bh->b_data;
efe = (struct extendedFileEntry *)bh->b_data;
if (iinfo->i_use) {
struct unallocSpaceEntry *use =
(struct unallocSpaceEntry *)bh->b_data;
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));
use->descTag.tagIdent = cpu_to_le16(TAG_IDENT_USE);
crclen = sizeof(struct unallocSpaceEntry);
goto finish;
}
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_FORGET))
fe->uid = cpu_to_le32(UDF_INVALID_ID);
else
fe->uid = cpu_to_le32(i_uid_read(inode));
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_FORGET))
fe->gid = cpu_to_le32(UDF_INVALID_ID);
else
fe->gid = cpu_to_le32(i_gid_read(inode));
udfperms = ((inode->i_mode & 0007)) |
((inode->i_mode & 0070) << 2) |
((inode->i_mode & 0700) << 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));
fe->permissions = cpu_to_le32(udfperms);
if (S_ISDIR(inode->i_mode) && inode->i_nlink > 0)
fe->fileLinkCount = cpu_to_le16(inode->i_nlink - 1);
else
fe->fileLinkCount = cpu_to_le16(inode->i_nlink);
fe->informationLength = cpu_to_le64(inode->i_size);
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) {
dsea = (struct deviceSpec *)
udf_add_extendedattr(inode,
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(struct regid));
dsea->impUseLength = cpu_to_le32(sizeof(struct regid));
}
eid = (struct regid *)dsea->impUse;
memset(eid, 0, sizeof(*eid));
strcpy(eid->ident, UDF_ID_DEVELOPER);
eid->identSuffix[0] = UDF_OS_CLASS_UNIX;
eid->identSuffix[1] = UDF_OS_ID_LINUX;
dsea->majorDeviceIdent = cpu_to_le32(imajor(inode));
dsea->minorDeviceIdent = cpu_to_le32(iminor(inode));
}
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
lb_recorded = 0; /* No extents => no blocks! */
else
lb_recorded =
(inode->i_blocks + (1 << (blocksize_bits - 9)) - 1) >>
(blocksize_bits - 9);
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(lb_recorded);
udf_time_to_disk_stamp(&fe->accessTime,
timespec64_to_timespec(inode->i_atime));
udf_time_to_disk_stamp(&fe->modificationTime,
timespec64_to_timespec(inode->i_mtime));
udf_time_to_disk_stamp(&fe->attrTime,
timespec64_to_timespec(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(iinfo->i_unique);
fe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr);
fe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
fe->checkpoint = cpu_to_le32(iinfo->i_checkpoint);
fe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_FE);
crclen = sizeof(struct fileEntry);
} 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(lb_recorded);
udf_adjust_time(iinfo, timespec64_to_timespec(inode->i_atime));
udf_adjust_time(iinfo, timespec64_to_timespec(inode->i_mtime));
udf_adjust_time(iinfo, timespec64_to_timespec(inode->i_ctime));
udf_time_to_disk_stamp(&efe->accessTime,
timespec64_to_timespec(inode->i_atime));
udf_time_to_disk_stamp(&efe->modificationTime,
timespec64_to_timespec(inode->i_mtime));
udf_time_to_disk_stamp(&efe->createTime, iinfo->i_crtime);
udf_time_to_disk_stamp(&efe->attrTime,
timespec64_to_timespec(inode->i_ctime));
memset(&(efe->impIdent), 0, sizeof(efe->impIdent));
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(iinfo->i_unique);
efe->lengthExtendedAttr = cpu_to_le32(iinfo->i_lenEAttr);
efe->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
efe->checkpoint = cpu_to_le32(iinfo->i_checkpoint);
efe->descTag.tagIdent = cpu_to_le16(TAG_IDENT_EFE);
crclen = sizeof(struct extendedFileEntry);
}
finish:
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 {
fe->icbTag.strategyType = cpu_to_le16(4);
fe->icbTag.numEntries = cpu_to_le16(1);
}
if (iinfo->i_use)
fe->icbTag.fileType = ICBTAG_FILE_TYPE_USE;
else if (S_ISDIR(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_DIRECTORY;
else if (S_ISREG(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_REGULAR;
else if (S_ISLNK(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_SYMLINK;
else if (S_ISBLK(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_BLOCK;
else if (S_ISCHR(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_CHAR;
else if (S_ISFIFO(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_FIFO;
else if (S_ISSOCK(inode->i_mode))
fe->icbTag.fileType = ICBTAG_FILE_TYPE_SOCKET;
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) |
(le16_to_cpu(fe->icbTag.flags) &
~(ICBTAG_FLAG_AD_MASK | ICBTAG_FLAG_SETUID |
ICBTAG_FLAG_SETGID | ICBTAG_FLAG_STICKY));
fe->icbTag.flags = cpu_to_le16(icbflags);
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(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(crc_itu_t(0, (char *)fe + sizeof(struct tag),
crclen));
fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag);
set_buffer_uptodate(bh);
unlock_buffer(bh);
/* write the data blocks */
mark_buffer_dirty(bh);
if (do_sync) {
sync_dirty_buffer(bh);
if (buffer_write_io_error(bh)) {
udf_warn(inode->i_sb, "IO error syncing udf inode [%08lx]\n",
inode->i_ino);
err = -EIO;
}
}
brelse(bh);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 1014 | 62.48% | 2 | 4.88% |
| Ben Fennema | 152 | 9.37% | 5 | 12.20% |
| Marcin Ślusarz | 131 | 8.07% | 6 | 14.63% |
| Steve Nickel | 67 | 4.13% | 2 | 4.88% |
| Linus Torvalds | 48 | 2.96% | 3 | 7.32% |
| Jan Kara | 46 | 2.83% | 5 | 12.20% |
| Phillip Susi | 36 | 2.22% | 2 | 4.88% |
| Deepa Dinamani | 27 | 1.66% | 1 | 2.44% |
| Al Viro | 23 | 1.42% | 3 | 7.32% |
| Andrew Morton | 19 | 1.17% | 2 | 4.88% |
| Steven J. Magnani | 18 | 1.11% | 1 | 2.44% |
| Fabian Frederick | 15 | 0.92% | 2 | 4.88% |
| Pekka J Enberg | 9 | 0.55% | 2 | 4.88% |
| Eric W. Biedermann | 6 | 0.37% | 1 | 2.44% |
| SF Markus Elfring | 5 | 0.31% | 1 | 2.44% |
| Bob Copeland | 3 | 0.18% | 1 | 2.44% |
| Joe Perches | 3 | 0.18% | 1 | 2.44% |
| Changwoo Min | 1 | 0.06% | 1 | 2.44% |
| Total | 1623 | 100.00% | 41 | 100.00% |
struct inode *__udf_iget(struct super_block *sb, struct kernel_lb_addr *ino,
bool hidden_inode)
{
unsigned long block = udf_get_lb_pblock(sb, ino, 0);
struct inode *inode = iget_locked(sb, block);
int err;
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr));
err = udf_read_inode(inode, hidden_inode);
if (err < 0) {
iget_failed(inode);
return ERR_PTR(err);
}
unlock_new_inode(inode);
return inode;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 61 | 47.29% | 2 | 20.00% |
| Jan Kara | 34 | 26.36% | 2 | 20.00% |
| Christoph Hellwig | 18 | 13.95% | 1 | 10.00% |
| Linus Torvalds | 8 | 6.20% | 1 | 10.00% |
| Pekka J Enberg | 3 | 2.33% | 2 | 20.00% |
| Marcin Ślusarz | 3 | 2.33% | 1 | 10.00% |
| Al Viro | 2 | 1.55% | 1 | 10.00% |
| Total | 129 | 100.00% | 10 | 100.00% |
int udf_setup_indirect_aext(struct inode *inode, udf_pblk_t block,
struct extent_position *epos)
{
struct super_block *sb = inode->i_sb;
struct buffer_head *bh;
struct allocExtDesc *aed;
struct extent_position nepos;
struct kernel_lb_addr neloc;
int ver, adsize;
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(struct short_ad);
else if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(struct long_ad);
else
return -EIO;
neloc.logicalBlockNum = block;
neloc.partitionReferenceNum = epos->block.partitionReferenceNum;
bh = udf_tgetblk(sb, udf_get_lb_pblock(sb, &neloc, 0));
if (!bh)
return -EIO;
lock_buffer(bh);
memset(bh->b_data, 0x00, sb->s_blocksize);
set_buffer_uptodate(bh);
unlock_buffer(bh);
mark_buffer_dirty_inode(bh, inode);
aed = (struct allocExtDesc *)(bh->b_data);
if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT)) {
aed->previousAllocExtLocation =
cpu_to_le32(epos->block.logicalBlockNum);
}
aed->lengthAllocDescs = cpu_to_le32(0);
if (UDF_SB(sb)->s_udfrev >= 0x0200)
ver = 3;
else
ver = 2;
udf_new_tag(bh->b_data, TAG_IDENT_AED, ver, 1, block,
sizeof(struct tag));
nepos.block = neloc;
nepos.offset = sizeof(struct allocExtDesc);
nepos.bh = bh;
/*
* Do we have to copy current last extent to make space for indirect
* one?
*/
if (epos->offset + adsize > sb->s_blocksize) {
struct kernel_lb_addr cp_loc;
uint32_t cp_len;
int cp_type;
epos->offset -= adsize;
cp_type = udf_current_aext(inode, epos, &cp_loc, &cp_len, 0);
cp_len |= ((uint32_t)cp_type) << 30;
__udf_add_aext(inode, &nepos, &cp_loc, cp_len, 1);
udf_write_aext(inode, epos, &nepos.block,
sb->s_blocksize | EXT_NEXT_EXTENT_ALLOCDECS, 0);
} else {
__udf_add_aext(inode, epos, &nepos.block,
sb->s_blocksize | EXT_NEXT_EXTENT_ALLOCDECS, 0);
}
brelse(epos->bh);
*epos = nepos;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 188 | 45.52% | 3 | 16.67% |
| Linus Torvalds (pre-git) | 150 | 36.32% | 3 | 16.67% |
| Linus Torvalds | 38 | 9.20% | 1 | 5.56% |
| Marcin Ślusarz | 16 | 3.87% | 4 | 22.22% |
| Ben Fennema | 14 | 3.39% | 3 | 16.67% |
| Pekka J Enberg | 5 | 1.21% | 2 | 11.11% |
| Andrew Morton | 1 | 0.24% | 1 | 5.56% |
| Steven J. Magnani | 1 | 0.24% | 1 | 5.56% |
| Total | 413 | 100.00% | 18 | 100.00% |
/*
* Append extent at the given position - should be the first free one in inode
* / indirect extent. This function assumes there is enough space in the inode
* or indirect extent. Use udf_add_aext() if you didn't check for this before.
*/
int __udf_add_aext(struct inode *inode, struct extent_position *epos,
struct kernel_lb_addr *eloc, uint32_t elen, int inc)
{
struct udf_inode_info *iinfo = UDF_I(inode);
struct allocExtDesc *aed;
int adsize;
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 -EIO;
if (!epos->bh) {
WARN_ON(iinfo->i_lenAlloc !=
epos->offset - udf_file_entry_alloc_offset(inode));
} else {
aed = (struct allocExtDesc *)epos->bh->b_data;
WARN_ON(le32_to_cpu(aed->lengthAllocDescs) !=
epos->offset - sizeof(struct allocExtDesc));
WARN_ON(epos->offset + adsize > inode->i_sb->s_blocksize);
}
udf_write_aext(inode, epos, eloc, elen, inc);
if (!epos->bh) {
iinfo->i_lenAlloc += adsize;
mark_inode_dirty(inode);
} 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(epos->bh->b_data,
sizeof(struct allocExtDesc));
mark_buffer_dirty_inode(epos->bh, inode);
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 123 | 42.56% | 3 | 23.08% |
| Linus Torvalds (pre-git) | 76 | 26.30% | 2 | 15.38% |
| Linus Torvalds | 61 | 21.11% | 1 | 7.69% |
| Ben Fennema | 15 | 5.19% | 2 | 15.38% |
| Marcin Ślusarz | 9 | 3.11% | 4 | 30.77% |
| Arnd Bergmann | 5 | 1.73% | 1 | 7.69% |
| Total | 289 | 100.00% | 13 | 100.00% |
/*
* Append extent at given position - should be the first free one in inode
* / indirect extent. Takes care of allocating and linking indirect blocks.
*/
int udf_add_aext(struct inode *inode, struct extent_position *epos,
struct kernel_lb_addr *eloc, uint32_t elen, int inc)
{
int adsize;
struct super_block *sb = inode->i_sb;
if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(struct short_ad);
else if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(struct long_ad);
else
return -EIO;
if (epos->offset + (2 * adsize) > sb->s_blocksize) {
int err;
udf_pblk_t new_block;
new_block = udf_new_block(sb, NULL,
epos->block.partitionReferenceNum,
epos->block.logicalBlockNum, &err);
if (!new_block)
return -ENOSPC;
err = udf_setup_indirect_aext(inode, new_block, epos);
if (err)
return err;
}
return __udf_add_aext(inode, epos, eloc, elen, inc);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jan Kara | 170 | 99.42% | 1 | 50.00% |
| Steven J. Magnani | 1 | 0.58% | 1 | 50.00% |
| Total | 171 | 100.00% | 2 | 100.00% |
void 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;
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 = 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;
}
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)
epos->offset += adsize;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 140 | 46.82% | 2 | 14.29% |
| Linus Torvalds | 48 | 16.05% | 1 | 7.14% |
| Ben Fennema | 37 | 12.37% | 2 | 14.29% |
| Jan Kara | 25 | 8.36% | 2 | 14.29% |
| Marcin Ślusarz | 24 | 8.03% | 3 | 21.43% |
| Cyrill V. Gorcunov | 14 | 4.68% | 1 | 7.14% |
| Pekka J Enberg | 10 | 3.34% | 2 | 14.29% |
| Al Viro | 1 | 0.33% | 1 | 7.14% |
| Total | 299 | 100.00% | 14 | 100.00% |
/*
* Only 1 indirect extent in a row really makes sense but allow upto 16 in case
* someone does some weird stuff.
*/
#define UDF_MAX_INDIR_EXTS 16
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;
unsigned int indirections = 0;
while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) ==
(EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
udf_pblk_t block;
if (++indirections > UDF_MAX_INDIR_EXTS) {
udf_err(inode->i_sb,
"too many indirect extents in inode %lu\n",
inode->i_ino);
return -1;
}
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 %u failed!\n", block);
return -1;
}
}
return etype;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 54 | 32.14% | 3 | 21.43% |
| Ben Fennema | 38 | 22.62% | 2 | 14.29% |
| Vegard Nossum | 32 | 19.05% | 1 | 7.14% |
| Marcin Ślusarz | 21 | 12.50% | 1 | 7.14% |
| Jan Kara | 18 | 10.71% | 2 | 14.29% |
| Steven J. Magnani | 2 | 1.19% | 2 | 14.29% |
| Pekka J Enberg | 2 | 1.19% | 2 | 14.29% |
| Al Viro | 1 | 0.60% | 1 | 7.14% |
| Total | 168 | 100.00% | 14 | 100.00% |
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;
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 (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 = %u unsupported\n", iinfo->i_alloc_type);
return -1;
}
return etype;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 194 | 58.43% | 1 | 8.33% |
| Ben Fennema | 44 | 13.25% | 2 | 16.67% |
| Marcin Ślusarz | 40 | 12.05% | 3 | 25.00% |
| Jan Kara | 35 | 10.54% | 1 | 8.33% |
| Cyrill V. Gorcunov | 8 | 2.41% | 1 | 8.33% |
| Andrew Morton | 6 | 1.81% | 1 | 8.33% |
| Pekka J Enberg | 3 | 0.90% | 1 | 8.33% |
| Steven J. Magnani | 1 | 0.30% | 1 | 8.33% |
| Al Viro | 1 | 0.30% | 1 | 8.33% |
| Total | 332 | 100.00% | 12 | 100.00% |
static int8_t udf_insert_aext(struct inode *inode, struct extent_position epos,
struct kernel_lb_addr neloc, uint32_t nelen)
{
struct kernel_lb_addr oeloc;
uint32_t oelen;
int8_t etype;
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, &epos, &neloc, nelen, 1);
brelse(epos.bh);
return (nelen >> 30);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 102 | 78.46% | 2 | 20.00% |
| Jan Kara | 14 | 10.77% | 2 | 20.00% |
| Ben Fennema | 4 | 3.08% | 1 | 10.00% |
| Pekka J Enberg | 4 | 3.08% | 2 | 20.00% |
| Linus Torvalds | 3 | 2.31% | 1 | 10.00% |
| Al Viro | 2 | 1.54% | 1 | 10.00% |
| Andries E. Brouwer | 1 | 0.77% | 1 | 10.00% |
| Total | 130 | 100.00% | 10 | 100.00% |
int8_t udf_delete_aext(struct inode *inode, struct extent_position epos)
{
struct extent_position oepos;
int adsize;
int8_t etype;
struct allocExtDesc *aed;
struct udf_inode_info *iinfo;
struct kernel_lb_addr eloc;
uint32_t elen;
if (epos.bh) {
get_bh(epos.bh);
get_bh(epos.bh);
}
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;
oepos = epos;
if (udf_next_aext(inode, &epos, &eloc, &elen, 1) == -1)
return -1;
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(struct kernel_lb_addr));
elen = 0;
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 *)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(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 *)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(oepos.bh->b_data,
sizeof(struct allocExtDesc));
mark_buffer_dirty_inode(oepos.bh, inode);
}
}
brelse(epos.bh);
brelse(oepos.bh);
return (elen >> 30);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 337 | 57.51% | 1 | 6.67% |
| Jan Kara | 116 | 19.80% | 3 | 20.00% |
| Linus Torvalds | 77 | 13.14% | 2 | 13.33% |
| Marcin Ślusarz | 35 | 5.97% | 4 | 26.67% |
| Ben Fennema | 12 | 2.05% | 2 | 13.33% |
| Pekka J Enberg | 8 | 1.37% | 2 | 13.33% |
| Al Viro | 1 | 0.17% | 1 | 6.67% |
| Total | 586 | 100.00% | 15 | 100.00% |
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)
{
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;
iinfo = UDF_I(inode);
if (!udf_read_extent_cache(inode, bcount, &lbcount, pos)) {
pos->offset = 0;
pos->block = iinfo->i_location;
pos->bh = NULL;
}
*elen = 0;
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);
/* update extent cache */
udf_update_extent_cache(inode, lbcount - *elen, pos);
*offset = (bcount + *elen - lbcount) >> blocksize_bits;
return etype;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 86 | 42.57% | 3 | 21.43% |
| Marcin Ślusarz | 35 | 17.33% | 3 | 21.43% |
| Jan Kara | 31 | 15.35% | 2 | 14.29% |
| Namjae Jeon | 30 | 14.85% | 1 | 7.14% |
| Linus Torvalds | 15 | 7.43% | 2 | 14.29% |
| Ben Fennema | 3 | 1.49% | 1 | 7.14% |
| Pekka J Enberg | 1 | 0.50% | 1 | 7.14% |
| Al Viro | 1 | 0.50% | 1 | 7.14% |
| Total | 202 | 100.00% | 14 | 100.00% |
udf_pblk_t udf_block_map(struct inode *inode, sector_t block)
{
struct kernel_lb_addr eloc;
uint32_t elen;
sector_t offset;
struct extent_position epos = {};
udf_pblk_t ret;
down_read(&UDF_I(inode)->i_data_sem);
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;
up_read(&UDF_I(inode)->i_data_sem);
brelse(epos.bh);
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_VARCONV))
return udf_fixed_to_variable(ret);
else
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 83 | 64.84% | 2 | 15.38% |
| Alessio Igor Bogani | 20 | 15.62% | 1 | 7.69% |
| Jan Kara | 10 | 7.81% | 3 | 23.08% |
| Ben Fennema | 6 | 4.69% | 1 | 7.69% |
| Linus Torvalds | 3 | 2.34% | 1 | 7.69% |
| Pekka J Enberg | 2 | 1.56% | 2 | 15.38% |
| Steven J. Magnani | 2 | 1.56% | 1 | 7.69% |
| Al Viro | 1 | 0.78% | 1 | 7.69% |
| Cyrill V. Gorcunov | 1 | 0.78% | 1 | 7.69% |
| Total | 128 | 100.00% | 13 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 6035 | 45.05% | 15 | 9.49% |
| Jan Kara | 2813 | 21.00% | 36 | 22.78% |
| Marcin Ślusarz | 969 | 7.23% | 13 | 8.23% |
| Linus Torvalds | 845 | 6.31% | 10 | 6.33% |
| Ben Fennema | 585 | 4.37% | 6 | 3.80% |
| Namjae Jeon | 501 | 3.74% | 4 | 2.53% |
| Andrew Morton | 394 | 2.94% | 6 | 3.80% |
| Fabian Frederick | 194 | 1.45% | 9 | 5.70% |
| Ian Abbott | 158 | 1.18% | 2 | 1.27% |
| Al Viro | 123 | 0.92% | 11 | 6.96% |
| Cyrill V. Gorcunov | 99 | 0.74% | 4 | 2.53% |
| Deepa Dinamani | 93 | 0.69% | 2 | 1.27% |
| Steve Nickel | 89 | 0.66% | 2 | 1.27% |
| Pekka J Enberg | 83 | 0.62% | 2 | 1.27% |
| Alessio Igor Bogani | 74 | 0.55% | 1 | 0.63% |
| Christoph Hellwig | 68 | 0.51% | 9 | 5.70% |
| Phillip Susi | 50 | 0.37% | 2 | 1.27% |
| Steven J. Magnani | 41 | 0.31% | 4 | 2.53% |
| Vegard Nossum | 37 | 0.28% | 1 | 0.63% |
| Nicholas Piggin | 33 | 0.25% | 1 | 0.63% |
| Joe Perches | 26 | 0.19% | 1 | 0.63% |
| Andries E. Brouwer | 17 | 0.13% | 2 | 1.27% |
| Art Haas | 10 | 0.07% | 1 | 0.63% |
| Miklos Szeredi | 9 | 0.07% | 1 | 0.63% |
| Eric W. Biedermann | 8 | 0.06% | 1 | 0.63% |
| SF Markus Elfring | 7 | 0.05% | 1 | 0.63% |
| Bob Copeland | 6 | 0.04% | 1 | 0.63% |
| Andi Kleen | 6 | 0.04% | 1 | 0.63% |
| Omar Sandoval | 5 | 0.04% | 1 | 0.63% |
| Arnd Bergmann | 5 | 0.04% | 1 | 0.63% |
| Michael Christie | 3 | 0.02% | 1 | 0.63% |
| Dave Hansen | 3 | 0.02% | 1 | 0.63% |
| Kirill A. Shutemov | 2 | 0.01% | 1 | 0.63% |
| Kent Overstreet | 2 | 0.01% | 1 | 0.63% |
| Andrey V. Savochkin | 2 | 0.01% | 1 | 0.63% |
| Changwoo Min | 1 | 0.01% | 1 | 0.63% |
| Johannes Weiner | 1 | 0.01% | 1 | 0.63% |
| Total | 13397 | 100.00% | 158 | 100.00% |
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