NTFS: 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'.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index c089bf0..a916c8b 100644
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -128,6 +128,10 @@
- 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.
diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
index a56ca18..4677947 100644
--- a/fs/ntfs/dir.c
+++ b/fs/ntfs/dir.c
@@ -1308,7 +1308,8 @@
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);
diff --git a/fs/ntfs/inode.h b/fs/ntfs/inode.h
index 6eb9977..3de5c02 100644
--- a/fs/ntfs/inode.h
+++ b/fs/ntfs/inode.h
@@ -110,7 +110,7 @@
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
diff --git a/fs/ntfs/lcnalloc.c b/fs/ntfs/lcnalloc.c
index 7087b5b..a4bc076 100644
--- a/fs/ntfs/lcnalloc.c
+++ b/fs/ntfs/lcnalloc.c
@@ -293,7 +293,7 @@
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 @@
(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;
}
diff --git a/fs/ntfs/logfile.c b/fs/ntfs/logfile.c
index e680dd0..8edb8e2 100644
--- a/fs/ntfs/logfile.c
+++ b/fs/ntfs/logfile.c
@@ -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 @@
}
/**
- * 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 @@
* 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.