aboutsummaryrefslogtreecommitdiff
path: root/fs/ntfs/logfile.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ntfs/logfile.c')
-rw-r--r--fs/ntfs/logfile.c30
1 files changed, 25 insertions, 5 deletions
diff --git a/fs/ntfs/logfile.c b/fs/ntfs/logfile.c
index 0173e95500d..0fd70295cca 100644
--- a/fs/ntfs/logfile.c
+++ b/fs/ntfs/logfile.c
@@ -51,7 +51,8 @@ static BOOL ntfs_check_restart_page_header(struct inode *vi,
RESTART_PAGE_HEADER *rp, s64 pos)
{
u32 logfile_system_page_size, logfile_log_page_size;
- u16 usa_count, usa_ofs, usa_end, ra_ofs;
+ u16 ra_ofs, usa_count, usa_ofs, usa_end = 0;
+ BOOL have_usa = TRUE;
ntfs_debug("Entering.");
/*
@@ -86,6 +87,14 @@ static BOOL ntfs_check_restart_page_header(struct inode *vi,
(int)sle16_to_cpu(rp->minor_ver));
return FALSE;
}
+ /*
+ * If chkdsk has been run the restart page may not be protected by an
+ * update sequence array.
+ */
+ if (ntfs_is_chkd_record(rp->magic) && !le16_to_cpu(rp->usa_count)) {
+ have_usa = FALSE;
+ goto skip_usa_checks;
+ }
/* Verify the size of the update sequence array. */
usa_count = 1 + (logfile_system_page_size >> NTFS_BLOCK_SIZE_BITS);
if (usa_count != le16_to_cpu(rp->usa_count)) {
@@ -102,6 +111,7 @@ static BOOL ntfs_check_restart_page_header(struct inode *vi,
"inconsistent update sequence array offset.");
return FALSE;
}
+skip_usa_checks:
/*
* Verify the position of the restart area. It must be:
* - aligned to 8-byte boundary,
@@ -109,7 +119,8 @@ static BOOL ntfs_check_restart_page_header(struct inode *vi,
* - within the system page size.
*/
ra_ofs = le16_to_cpu(rp->restart_area_offset);
- if (ra_ofs & 7 || ra_ofs < usa_end ||
+ if (ra_ofs & 7 || (have_usa ? ra_ofs < usa_end :
+ ra_ofs < sizeof(RESTART_PAGE_HEADER)) ||
ra_ofs > logfile_system_page_size) {
ntfs_error(vi->i_sb, "$LogFile restart page specifies "
"inconsistent restart area offset.");
@@ -402,8 +413,12 @@ static int ntfs_check_and_load_restart_page(struct inode *vi,
idx++;
} while (to_read > 0);
}
- /* Perform the multi sector transfer deprotection on the buffer. */
- if (post_read_mst_fixup((NTFS_RECORD*)trp,
+ /*
+ * Perform the multi sector transfer deprotection on the buffer if the
+ * restart page is protected.
+ */
+ if ((!ntfs_is_chkd_record(trp->magic) || le16_to_cpu(trp->usa_count))
+ && post_read_mst_fixup((NTFS_RECORD*)trp,
le32_to_cpu(rp->system_page_size))) {
/*
* A multi sector tranfer error was detected. We only need to
@@ -615,11 +630,16 @@ is_empty:
* Otherwise just throw it away.
*/
if (rstr2_lsn > rstr1_lsn) {
+ ntfs_debug("Using second restart page as it is more "
+ "recent.");
ntfs_free(rstr1_ph);
rstr1_ph = rstr2_ph;
/* rstr1_lsn = rstr2_lsn; */
- } else
+ } else {
+ ntfs_debug("Using first restart page as it is more "
+ "recent.");
ntfs_free(rstr2_ph);
+ }
rstr2_ph = NULL;
}
/* All consistency checks passed. */