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NTFS: Fix several occurences of a bug where we would perform 'var & ~const'

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with a 64-bit variable and a int, i.e. 32-bit, constant.  This causes
      the higher order 32-bits of the 64-bit variable to be zeroed.  To fix
      this cast the 'const' to the same 64-bit type as 'var'.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
This commit is contained in:
Anton Altaparmakov 2005-06-25 16:51:58 +01:00
parent ca8fd7a0c6
commit 3bd1f4a173
5 changed files with 12 additions and 7 deletions
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4
fs/ntfs/ChangeLog
View File

@ -128,6 +128,10 @@ ToDo/Notes:
- Detect the case when Windows has been suspended to disk on the volume
to be mounted and if this is the case do not allow (re)mounting
read-write. This is done by parsing hiberfil.sys if present.
- Fix several occurences of a bug where we would perform 'var & ~const'
with a 64-bit variable and a int, i.e. 32-bit, constant. This causes
the higher order 32-bits of the 64-bit variable to be zeroed. To fix
this cast the 'const' to the same 64-bit type as 'var'.
2.1.22 - Many bug and race fixes and error handling improvements.

3
fs/ntfs/dir.c
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@ -1308,7 +1308,8 @@ static int ntfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
ntfs_debug("Handling index buffer 0x%llx.",
(unsigned long long)bmp_pos + cur_bmp_pos);
/* If the current index buffer is in the same page we reuse the page. */
if ((prev_ia_pos & PAGE_CACHE_MASK) != (ia_pos & PAGE_CACHE_MASK)) {
if ((prev_ia_pos & (s64)PAGE_CACHE_MASK) !=
(ia_pos & (s64)PAGE_CACHE_MASK)) {
prev_ia_pos = ia_pos;
if (likely(ia_page != NULL)) {
unlock_page(ia_page);

2
fs/ntfs/inode.h
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@ -110,7 +110,7 @@ struct _ntfs_inode {
u8 block_size_bits; /* Log2 of the above. */
u8 vcn_size_bits; /* Log2 of the above. */
} index;
struct { /* It is a compressed file or an attribute inode. */
struct { /* It is a compressed/sparse file/attribute inode. */
s64 size; /* Copy of compressed_size from
$DATA. */
u32 block_size; /* Size of a compression block

4
fs/ntfs/lcnalloc.c
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@ -293,7 +293,7 @@ runlist_element *ntfs_cluster_alloc(ntfs_volume *vol, const VCN start_vcn,
buf_size = i_size - last_read_pos;
buf_size <<= 3;
lcn = bmp_pos & 7;
bmp_pos &= ~7;
bmp_pos &= ~(LCN)7;
ntfs_debug("Before inner while loop: buf_size %i, lcn 0x%llx, "
"bmp_pos 0x%llx, need_writeback %i.", buf_size,
(unsigned long long)lcn,
@ -311,7 +311,7 @@ runlist_element *ntfs_cluster_alloc(ntfs_volume *vol, const VCN start_vcn,
(unsigned int)*byte);
/* Skip full bytes. */
if (*byte == 0xff) {
lcn = (lcn + 8) & ~7;
lcn = (lcn + 8) & ~(LCN)7;
ntfs_debug("Continuing while loop 1.");
continue;
}

6
fs/ntfs/logfile.c
View File

@ -1,7 +1,7 @@
/*
* logfile.c - NTFS kernel journal handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2002-2004 Anton Altaparmakov
* Copyright (c) 2002-2005 Anton Altaparmakov
*
* This program/include file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
@ -410,7 +410,7 @@ static BOOL ntfs_check_and_load_restart_page(struct inode *vi,
}
/**
* ntfs_ckeck_logfile - check in the journal if the volume is consistent
* ntfs_check_logfile - check the journal for consistency
* @log_vi: struct inode of loaded journal $LogFile to check
*
* Check the $LogFile journal for consistency and return TRUE if it is
@ -464,7 +464,7 @@ BOOL ntfs_check_logfile(struct inode *log_vi)
* optimize log_page_size and log_page_bits into constants.
*/
log_page_bits = generic_ffs(log_page_size) - 1;
size &= ~(log_page_size - 1);
size &= ~(s64)(log_page_size - 1);
/*
* Ensure the log file is big enough to store at least the two restart
* pages and the minimum number of log record pages.