Commit da28438c authored by Anton Altaparmakov's avatar Anton Altaparmakov
Browse files

NTFS: Use i_size_read() in fs/ntfs/attrib.c::ntfs_attr_set().


Signed-off-by: default avatarAnton Altaparmakov <aia21@cantab.net>
parent 8800cea6
......@@ -31,6 +31,7 @@ ToDo/Notes:
compiled without debug. This avoids a possible denial of service
attack. Thanks to Carl-Daniel Hailfinger from SuSE for pointing this
out.
- Use i_size_read() in fs/ntfs/attrib.c::ntfs_attr_set().
2.1.22 - Many bug and race fixes and error handling improvements.
......
......@@ -6,7 +6,7 @@ ntfs-objs := aops.o attrib.o collate.o compress.o debug.o dir.o file.o \
index.o inode.o mft.o mst.o namei.o runlist.o super.o sysctl.o \
unistr.o upcase.o
EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.22\"
EXTRA_CFLAGS = -DNTFS_VERSION=\"2.1.23-WIP\"
ifeq ($(CONFIG_NTFS_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG
......
......@@ -1127,6 +1127,10 @@ int ntfs_attr_record_resize(MFT_RECORD *m, ATTR_RECORD *a, u32 new_size)
* byte offset @ofs inside the attribute with the constant byte @val.
*
* This function is effectively like memset() applied to an ntfs attribute.
* Note thie function actually only operates on the page cache pages belonging
* to the ntfs attribute and it marks them dirty after doing the memset().
* Thus it relies on the vm dirty page write code paths to cause the modified
* pages to be written to the mft record/disk.
*
* Return 0 on success and -errno on error. An error code of -ESPIPE means
* that @ofs + @cnt were outside the end of the attribute and no write was
......@@ -1155,7 +1159,7 @@ int ntfs_attr_set(ntfs_inode *ni, const s64 ofs, const s64 cnt, const u8 val)
end = ofs + cnt;
end_ofs = end & ~PAGE_CACHE_MASK;
/* If the end is outside the inode size return -ESPIPE. */
if (unlikely(end > VFS_I(ni)->i_size)) {
if (unlikely(end > i_size_read(VFS_I(ni)))) {
ntfs_error(vol->sb, "Request exceeds end of attribute.");
return -ESPIPE;
}
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment