opengnsys
/
ntfs-3g
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add support for compressed, resident attributes. 

(Logical change 1.268)
edge.strict_endians
cantab.net!aia21 2004-01-21 12:30:18 +00:00
parent 824af63818
commit 2e726fff11
1 changed files with 13 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
libntfs/attrib.c
View File

@ -309,15 +309,16 @@ void ntfs_attr_init(ntfs_attr *na, const BOOL non_resident,
* ntfs_attr_open - open an ntfs attribute for access
* @ni: open ntfs inode in which the ntfs attribute resides
* @type: attribute type
* @name: attribute name in little endian Unicode or NULL
* @name: attribute name in little endian Unicode or AT_UNNAMED or NULL
* @name_len: length of attribute @name in Unicode characters (if @name given)
*
* Allocate a new ntfs attribute structure, initialize it with @ni, @type,
* @name, and @name_len, then return it. Return NULL on error with
* errno set to the error code.
*
* If looking for an unnamed attribute set @name to NULL. @name_len is not used
* at all in that case.
* If @name is AT_UNNAMED look specifically for an unnamed attribute. If you
* do not care whether the attribute is named or not set @name to NULL. In
* both those cases @name_len is not used at all.
*/
ntfs_attr *ntfs_attr_open(ntfs_inode *ni, const ATTR_TYPES type,
uchar_t *name, const u32 name_len)
@ -326,6 +327,7 @@ ntfs_attr *ntfs_attr_open(ntfs_inode *ni, const ATTR_TYPES type,
ntfs_attr *na;
ATTR_RECORD *a;
int err;
BOOL cs;
Dprintf("%s(): Entering for inode 0x%llx, attr 0x%x.\n", __FUNCTION__,
(unsigned long long)ni->mft_no, type);
@ -349,8 +351,8 @@ ntfs_attr *ntfs_attr_open(ntfs_inode *ni, const ATTR_TYPES type,
goto put_err_out;
}
a = ctx->attr;
cs = a->flags & (ATTR_IS_COMPRESSED | ATTR_IS_SPARSE);
if (a->non_resident) {
BOOL cs = a->flags & (ATTR_IS_COMPRESSED | ATTR_IS_SPARSE);
ntfs_attr_init(na, TRUE, a->flags & ATTR_IS_COMPRESSED,
a->flags & ATTR_IS_ENCRYPTED,
a->flags & ATTR_IS_SPARSE,
@ -361,12 +363,11 @@ ntfs_attr *ntfs_attr_open(ntfs_inode *ni, const ATTR_TYPES type,
cs ? a->compression_unit : 0);
} else {
s64 l = le32_to_cpu(a->value_length);
if (a->flags & (ATTR_COMPRESSION_MASK | ATTR_IS_ENCRYPTED |
ATTR_IS_SPARSE)) {
err = EIO;
goto put_err_out;
}
ntfs_attr_init(na, FALSE, FALSE, FALSE, FALSE, l, l, l, 0, 0);
ntfs_attr_init(na, FALSE, a->flags & ATTR_IS_COMPRESSED,
a->flags & ATTR_IS_ENCRYPTED,
a->flags & ATTR_IS_SPARSE, l, l, l,
cs ? sle64_to_cpu(a->compressed_size) : 0,
cs ? a->compression_unit : 0);
}
ntfs_attr_put_search_ctx(ctx);
return na;
@ -1544,8 +1545,8 @@ static int ntfs_external_attr_find(ATTR_TYPES type, const uchar_t *name,
ni = ctx->ntfs_ino;
base_ni = ctx->base_ntfs_ino;
Dprintf("Entering for inode %llu, attribute type 0x%x.\n",
(unsigned long long)ni->mft_no, type);
Dprintf("%s(): Entering for inode 0x%llx, attribute type 0x%x.\n",
__FUNCTION__, (unsigned long long)ni->mft_no, type);
if (!base_ni) {
/* First call happens with the base mft record. */
base_ni = ctx->base_ntfs_ino = ctx->ntfs_ino;