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authorAnton Altaparmakov <aia21@cantab.net>2005-10-19 12:21:19 +0100
committerAnton Altaparmakov <aia21@cantab.net>2005-10-19 12:21:19 +0100
commit7d0ffdb279105d9a87b447758ce4a634496abfd1 (patch)
tree66bd4d6307a81ae65a01acace5fd8ae6f5a30032 /fs/ntfs/file.c
parente087a412b45543a87497f0a213dbd5d55099f267 (diff)
downloadop-kernel-dev-7d0ffdb279105d9a87b447758ce4a634496abfd1.zip
op-kernel-dev-7d0ffdb279105d9a87b447758ce4a634496abfd1.tar.gz
NTFS: $EA attributes can be both resident non-resident.
Minor tidying. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Diffstat (limited to 'fs/ntfs/file.c')
-rw-r--r--fs/ntfs/file.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index cf2a0e2..5fb341a 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -1857,10 +1857,24 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
if (ni->type != AT_INDEX_ALLOCATION) {
/* If file is encrypted, deny access, just like NT4. */
if (NInoEncrypted(ni)) {
+ /*
+ * Reminder for later: Encrypted files are _always_
+ * non-resident so that the content can always be
+ * encrypted.
+ */
ntfs_debug("Denying write access to encrypted file.");
return -EACCES;
}
if (NInoCompressed(ni)) {
+ /* Only unnamed $DATA attribute can be compressed. */
+ BUG_ON(ni->type != AT_DATA);
+ BUG_ON(ni->name_len);
+ /*
+ * Reminder for later: If resident, the data is not
+ * actually compressed. Only on the switch to non-
+ * resident does compression kick in. This is in
+ * contrast to encrypted files (see above).
+ */
ntfs_error(vi->i_sb, "Writing to compressed files is "
"not implemented yet. Sorry.");
return -EOPNOTSUPP;
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