NTFS: Improve comments on file attribute flags in fs/ntfs/layout.h.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

diff --git a/fs/ntfs/ChangeLog b/fs/ntfs/ChangeLog
index 41d0381be6eafb34d902100c6f684d924b436f2f..a3a9d4b97979d1d4ed0a2eaa6e677344a1f9268b 100644 (file)
--- a/fs/ntfs/ChangeLog
+++ b/fs/ntfs/ChangeLog
@@ -37,6 +37,7 @@ ToDo/Notes:
        - Limit name length in fs/ntfs/unistr.c::ntfs_nlstoucs() to maximum
          allowed by NTFS, i.e. 255 Unicode characters, not including the
          terminating NULL (which is not stored on disk).
+       - Improve comments on file attribute flags in fs/ntfs/layout.h.
 
 2.1.26 - Minor bug fixes and updates.
 

diff --git a/fs/ntfs/layout.h b/fs/ntfs/layout.h
index f4283e12070914582aee309ced35f4966934a741..d34b93cb8b48adc878fdddf1bc86892b42b274e7 100644 (file)
--- a/fs/ntfs/layout.h
+++ b/fs/ntfs/layout.h
@@ -801,13 +801,16 @@ typedef struct {
 typedef ATTR_RECORD ATTR_REC;
 
 /*
- * File attribute flags (32-bit).
+ * File attribute flags (32-bit) appearing in the file_attributes fields of the
+ * STANDARD_INFORMATION attribute of MFT_RECORDs and the FILENAME_ATTR
+ * attributes of MFT_RECORDs and directory index entries.
+ *
+ * All of the below flags appear in the directory index entries but only some
+ * appear in the STANDARD_INFORMATION attribute whilst only some others appear
+ * in the FILENAME_ATTR attribute of MFT_RECORDs.  Unless otherwise stated the
+ * flags appear in all of the above.
  */
 enum {
-       /*
-        * The following flags are only present in the STANDARD_INFORMATION
-        * attribute (in the field file_attributes).
-        */
        FILE_ATTR_READONLY              = const_cpu_to_le32(0x00000001),
        FILE_ATTR_HIDDEN                = const_cpu_to_le32(0x00000002),
        FILE_ATTR_SYSTEM                = const_cpu_to_le32(0x00000004),
@@ -839,18 +842,14 @@ enum {
           F_A_COMPRESSED, and F_A_ENCRYPTED and preserves the rest.  This mask
           is used to to obtain all flags that are valid for setting. */
        /*
-        * The following flag is only present in the FILE_NAME attribute (in
-        * the field file_attributes).
+        * The flag FILE_ATTR_DUP_FILENAME_INDEX_PRESENT is present in all
+        * FILENAME_ATTR attributes but not in the STANDARD_INFORMATION
+        * attribute of an mft record.
         */
        FILE_ATTR_DUP_FILE_NAME_INDEX_PRESENT   = const_cpu_to_le32(0x10000000),
        /* Note, this is a copy of the corresponding bit from the mft record,
           telling us whether this is a directory or not, i.e. whether it has
           an index root attribute or not. */
-       /*
-        * The following flag is present both in the STANDARD_INFORMATION
-        * attribute and in the FILE_NAME attribute (in the field
-        * file_attributes).
-        */
        FILE_ATTR_DUP_VIEW_INDEX_PRESENT        = const_cpu_to_le32(0x20000000),
        /* Note, this is a copy of the corresponding bit from the mft record,
           telling us whether this file has a view index present (eg. object id
@@ -891,7 +890,7 @@ typedef struct {
                                           Windows this is only updated when
                                           accessed if some time delta has
                                           passed since the last update. Also,
-                                          last access times updates can be
+                                          last access time updates can be
                                           disabled altogether for speed. */
 /* 32*/        FILE_ATTR_FLAGS file_attributes; /* Flags describing the file. */
 /* 36*/        union {