return (ntfschar*)((u8*)ar + le16_to_cpu(ar->name_offset));
}
-/* Calculates the SHA1 message digest of a NTFS attribute.
- *
- * @ni: The NTFS inode containing the attribute.
- * @ar: The ATTR_RECORD describing the attribute.
- * @md: If successful, the returned SHA1 message digest.
- * @reparse_tag_ret: Optional pointer into which the first 4 bytes of the
- * attribute will be written (to get the reparse
- * point ID)
- *
- * Return 0 on success or nonzero on error.
- */
-static int
-ntfs_attr_sha1sum(ntfs_inode *ni, ATTR_RECORD *ar,
- u8 md[SHA1_HASH_SIZE],
- bool is_reparse_point,
- u32 *reparse_tag_ret)
+static ntfs_attr *
+open_ntfs_attr(ntfs_inode *ni, struct ntfs_location *loc)
{
- s64 pos = 0;
- s64 bytes_remaining;
- char buf[BUFFER_SIZE];
ntfs_attr *na;
- SHA_CTX ctx;
- na = ntfs_attr_open(ni, ar->type, attr_record_name(ar),
- ar->name_length);
+ na = ntfs_attr_open(ni,
+ loc->is_reparse_point ? AT_REPARSE_POINT : AT_DATA,
+ loc->stream_name,
+ loc->stream_name_nchars);
if (!na) {
- ERROR_WITH_ERRNO("Failed to open NTFS attribute");
- return WIMLIB_ERR_NTFS_3G;
+ ERROR_WITH_ERRNO("Failed to open attribute of \"%"TS"\" in "
+ "NTFS volume", loc->path);
}
+ return na;
+}
+
+int
+read_ntfs_file_prefix(const struct wim_lookup_table_entry *lte,
+ u64 size,
+ consume_data_callback_t cb,
+ void *ctx_or_buf,
+ int _ignored_flags)
+{
+ struct ntfs_location *loc = lte->ntfs_loc;
+ ntfs_volume *vol = loc->ntfs_vol;
+ ntfs_inode *ni;
+ ntfs_attr *na;
+ s64 pos;
+ s64 bytes_remaining;
+ void *out_buf;
+ int ret;
- bytes_remaining = na->data_size;
+ ni = ntfs_pathname_to_inode(vol, NULL, loc->path);
+ if (!ni) {
+ ERROR_WITH_ERRNO("Can't find NTFS inode for \"%"TS"\"", loc->path);
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out;
+ }
- if (is_reparse_point) {
- if (ntfs_attr_pread(na, 0, 8, buf) != 8)
- goto out_error;
- *reparse_tag_ret = le32_to_cpu(*(u32*)buf);
- DEBUG("ReparseTag = %#x", *reparse_tag_ret);
- pos = 8;
- bytes_remaining -= 8;
+ na = open_ntfs_attr(ni, loc);
+ if (!na) {
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_close_ntfs_inode;
}
- sha1_init(&ctx);
+ if (cb)
+ out_buf = alloca(WIM_CHUNK_SIZE);
+ else
+ out_buf = ctx_or_buf;
+ pos = (loc->is_reparse_point) ? 8 : 0;
+ bytes_remaining = size;
while (bytes_remaining) {
- s64 to_read = min(bytes_remaining, sizeof(buf));
- if (ntfs_attr_pread(na, pos, to_read, buf) != to_read)
- goto out_error;
- sha1_update(&ctx, buf, to_read);
+ s64 to_read = min(bytes_remaining, WIM_CHUNK_SIZE);
+ if (ntfs_attr_pread(na, pos, to_read, out_buf) != to_read) {
+ ERROR_WITH_ERRNO("Error reading \"%"TS"\"", loc->path);
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_close_ntfs_attr;
+ }
pos += to_read;
bytes_remaining -= to_read;
+ if (cb) {
+ ret = cb(out_buf, to_read, ctx_or_buf);
+ if (ret)
+ goto out_close_ntfs_attr;
+ } else {
+ out_buf += to_read;
+ }
}
- sha1_final(md, &ctx);
+ ret = 0;
+out_close_ntfs_attr:
ntfs_attr_close(na);
- return 0;
-out_error:
- ERROR_WITH_ERRNO("Error reading NTFS attribute");
- return WIMLIB_ERR_NTFS_3G;
+out_close_ntfs_inode:
+ ntfs_inode_close(ni);
+out:
+ return ret;
+}
+
+static int
+read_reparse_tag(ntfs_inode *ni, struct ntfs_location *loc,
+ u32 *reparse_tag_ret)
+{
+ int ret;
+ u8 buf[8];
+ ntfs_attr *na;
+
+ na = open_ntfs_attr(ni, loc);
+ if (!na) {
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out;
+ }
+
+ if (ntfs_attr_pread(na, 0, 8, buf) != 8) {
+ ERROR_WITH_ERRNO("Error reading reparse data");
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_close_ntfs_attr;
+ }
+ *reparse_tag_ret = le32_to_cpu(*(u32*)buf);
+ DEBUG("ReparseTag = %#x", *reparse_tag_ret);
+ ret = 0;
+out_close_ntfs_attr:
+ ntfs_attr_close(na);
+out:
+ return ret;
+
}
/* Load the streams from a file or reparse point in the NTFS volume into the WIM
char *path,
size_t path_len,
struct wim_lookup_table *lookup_table,
- ntfs_volume **ntfs_vol_p,
+ ntfs_volume *vol,
ATTR_TYPES type)
{
ntfs_attr_search_ctx *actx;
- u8 attr_hash[SHA1_HASH_SIZE];
- struct ntfs_location *ntfs_loc = NULL;
- int ret = 0;
+ struct ntfs_location *ntfs_loc;
+ int ret;
struct wim_lookup_table_entry *lte;
DEBUG2("Capturing NTFS data streams from `%s'", path);
while (!ntfs_attr_lookup(type, NULL, 0,
CASE_SENSITIVE, 0, NULL, 0, actx))
{
- u32 reparse_tag;
u64 data_size = ntfs_get_attribute_value_length(actx->attr);
u64 name_length = actx->attr->name_length;
+ u32 stream_id;
+
if (data_size == 0) {
- if (errno != 0) {
- ERROR_WITH_ERRNO("Failed to get size of attribute of "
- "`%s'", path);
- ret = WIMLIB_ERR_NTFS_3G;
- goto out_put_actx;
- }
/* Empty stream. No lookup table entry is needed. */
lte = NULL;
+ ntfs_loc = NULL;
} else {
- if (type == AT_REPARSE_POINT && data_size < 8) {
- ERROR("`%s': reparse point buffer too small",
- path);
- ret = WIMLIB_ERR_NTFS_3G;
+ ntfs_loc = CALLOC(1, sizeof(*ntfs_loc));
+ if (!ntfs_loc) {
+ ret = WIMLIB_ERR_NOMEM;
goto out_put_actx;
}
- /* Checksum the stream. */
- ret = ntfs_attr_sha1sum(ni, actx->attr, attr_hash,
- type == AT_REPARSE_POINT, &reparse_tag);
- if (ret != 0)
- goto out_put_actx;
-
- if (type == AT_REPARSE_POINT)
- inode->i_reparse_tag = reparse_tag;
-
- /* Make a lookup table entry for the stream, or use an existing
- * one if there's already an identical stream. */
- lte = __lookup_resource(lookup_table, attr_hash);
- ret = WIMLIB_ERR_NOMEM;
- if (lte) {
- lte->refcnt++;
- } else {
- ntfs_loc = CALLOC(1, sizeof(*ntfs_loc));
- if (!ntfs_loc)
- goto out_put_actx;
- ntfs_loc->ntfs_vol_p = ntfs_vol_p;
- ntfs_loc->path = MALLOC(path_len + 1);
- if (!ntfs_loc->path)
+ ntfs_loc->ntfs_vol = vol;
+ ntfs_loc->path = MALLOC(path_len + 1);
+ if (!ntfs_loc->path) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_free_ntfs_loc;
+ }
+ memcpy(ntfs_loc->path, path, path_len + 1);
+ if (name_length) {
+ ntfs_loc->stream_name = MALLOC(name_length * 2);
+ if (!ntfs_loc->stream_name) {
+ ret = WIMLIB_ERR_NOMEM;
goto out_free_ntfs_loc;
- memcpy(ntfs_loc->path, path, path_len + 1);
- if (name_length) {
- ntfs_loc->stream_name = MALLOC(name_length * 2);
- if (!ntfs_loc->stream_name)
- goto out_free_ntfs_loc;
- memcpy(ntfs_loc->stream_name,
- attr_record_name(actx->attr),
- actx->attr->name_length * 2);
- ntfs_loc->stream_name_nchars = name_length;
}
+ memcpy(ntfs_loc->stream_name,
+ attr_record_name(actx->attr),
+ actx->attr->name_length * 2);
+ ntfs_loc->stream_name_nchars = name_length;
+ }
- lte = new_lookup_table_entry();
- if (!lte)
- goto out_free_ntfs_loc;
- lte->ntfs_loc = ntfs_loc;
- lte->resource_location = RESOURCE_IN_NTFS_VOLUME;
- if (type == AT_REPARSE_POINT) {
- ntfs_loc->is_reparse_point = true;
- lte->resource_entry.original_size = data_size - 8;
- lte->resource_entry.size = data_size - 8;
- } else {
- ntfs_loc->is_reparse_point = false;
- lte->resource_entry.original_size = data_size;
- lte->resource_entry.size = data_size;
+ lte = new_lookup_table_entry();
+ if (!lte) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_free_ntfs_loc;
+ }
+ lte->resource_location = RESOURCE_IN_NTFS_VOLUME;
+ lte->ntfs_loc = ntfs_loc;
+ ntfs_loc = NULL;
+ if (type == AT_REPARSE_POINT) {
+ if (data_size < 8) {
+ ERROR("Invalid reparse data (only %u bytes)!",
+ (unsigned)data_size);
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_free_lte;
}
- ntfs_loc = NULL;
- copy_hash(lte->hash, attr_hash);
- lookup_table_insert(lookup_table, lte);
+ lte->ntfs_loc->is_reparse_point = true;
+ lte->resource_entry.original_size = data_size - 8;
+ ret = read_reparse_tag(ni, lte->ntfs_loc,
+ &inode->i_reparse_tag);
+ if (ret)
+ goto out_free_lte;
+ } else {
+ lte->ntfs_loc->is_reparse_point = false;
+ lte->resource_entry.original_size = data_size;
}
}
if (name_length == 0) {
/* Unnamed data stream. Put the reference to it in the
* dentry's inode. */
if (inode->i_lte) {
- WARNING("Found two un-named data streams for "
- "`%s'", path);
- free_lookup_table_entry(lte);
- } else {
- inode->i_lte = lte;
+ ERROR("Found two un-named data streams for `%s'",
+ path);
+ ret = WIMLIB_ERR_NTFS_3G;
+ goto out_free_lte;
}
+ stream_id = 0;
+ inode->i_lte = lte;
} else {
/* Named data stream. Put the reference to it in the
* alternate data stream entries */
new_ads_entry = inode_add_ads_utf16le(inode,
attr_record_name(actx->attr),
name_length * 2);
- if (!new_ads_entry)
+ if (!new_ads_entry) {
+ ret = WIMLIB_ERR_NOMEM;
goto out_free_lte;
+ }
wimlib_assert(new_ads_entry->stream_name_nbytes == name_length * 2);
+ stream_id = new_ads_entry->stream_id;
new_ads_entry->lte = lte;
}
+ if (lte) {
+ lookup_table_insert_unhashed(lookup_table, lte,
+ inode, stream_id);
+ }
+ }
+ if (errno == ENOENT) {
+ ret = 0;
+ } else {
+ ERROR_WITH_ERRNO("Error listing NTFS attributes from `%s'",
+ path);
+ ret = WIMLIB_ERR_NTFS_3G;
}
- ret = 0;
goto out_put_actx;
out_free_lte:
free_lookup_table_entry(lte);
if (ret == 0)
DEBUG2("Successfully captured NTFS streams from `%s'", path);
else
- ERROR("Failed to capture NTFS streams from `%s", path);
+ ERROR("Failed to capture NTFS streams from `%s'", path);
return ret;
}
struct sd_set *sd_set;
struct dos_name_map *dos_name_map;
const struct wimlib_capture_config *config;
- ntfs_volume **ntfs_vol_p;
+ ntfs_volume *vol;
int add_image_flags;
wimlib_progress_func_t progress_func;
};
struct wim_inode_table *inode_table,
struct sd_set *sd_set,
const struct wimlib_capture_config *config,
- ntfs_volume **ntfs_vol_p,
+ ntfs_volume *ntfs_vol,
int add_image_flags,
wimlib_progress_func_t progress_func);
ctx->lookup_table,
ctx->inode_table,
ctx->sd_set,
- ctx->config, ctx->ntfs_vol_p,
+ ctx->config, ctx->vol,
ctx->add_image_flags,
ctx->progress_func);
if (child)
struct wim_inode_table *inode_table,
struct sd_set *sd_set,
const struct wimlib_capture_config *config,
- ntfs_volume **ntfs_vol_p,
+ ntfs_volume *vol,
int add_image_flags,
wimlib_progress_func_t progress_func)
{
int ret;
struct wim_dentry *root;
struct wim_inode *inode;
+ ATTR_TYPES stream_type;
if (exclude_path(path, path_len, config, false)) {
/* Exclude a file or directory tree based on the capture
/* Get file attributes */
struct SECURITY_CONTEXT ctx;
memset(&ctx, 0, sizeof(ctx));
- ctx.vol = ni->vol;
+ ctx.vol = vol;
ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ATTRIB,
ni, dir_ni, (char *)&attributes,
sizeof(u32));
if (inode->i_nlink > 1) /* Shared inode; nothing more to do */
goto out;
- if (name_type & FILE_NAME_WIN32) /* Win32 or Win32+DOS name */
+ if (name_type & FILE_NAME_WIN32) /* Win32 or Win32+DOS name (rather than POSIX) */
root->is_win32_name = 1;
inode->i_creation_time = le64_to_cpu(ni->creation_time);
inode->i_last_write_time = le64_to_cpu(ni->last_data_change_time);
inode->i_attributes = le32_to_cpu(attributes);
inode->i_resolved = 1;
- if (attributes & FILE_ATTR_REPARSE_POINT) {
- /* Junction point, symbolic link, or other reparse point */
- ret = capture_ntfs_streams(inode, ni, path,
- path_len, lookup_table,
- ntfs_vol_p, AT_REPARSE_POINT);
- } else if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
+ if (attributes & FILE_ATTR_REPARSE_POINT)
+ stream_type = AT_REPARSE_POINT;
+ else
+ stream_type = AT_DATA;
+
+ /* Capture the file's streams; more specifically, this is supposed to:
+ *
+ * - Regular files: capture unnamed data stream and any named data
+ * streams
+ * - Directories: capture any named data streams
+ * - Reparse points: capture reparse data only
+ */
+ ret = capture_ntfs_streams(inode, ni, path, path_len, lookup_table,
+ vol, stream_type);
+ if (ret)
+ goto out;
+
+ if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
- /* Normal directory */
+ /* Recurse to directory children */
s64 pos = 0;
struct dos_name_map dos_name_map = { .rb_root = {.rb_node = NULL} };
struct readdir_ctx ctx = {
.sd_set = sd_set,
.dos_name_map = &dos_name_map,
.config = config,
- .ntfs_vol_p = ntfs_vol_p,
+ .vol = vol,
.add_image_flags = add_image_flags,
.progress_func = progress_func,
};
&dos_name_map);
}
destroy_dos_name_map(&dos_name_map);
- } else {
- /* Normal file */
- ret = capture_ntfs_streams(inode, ni, path,
- path_len, lookup_table,
- ntfs_vol_p, AT_DATA);
+ if (ret)
+ goto out;
}
- if (ret)
- goto out;
if (!(add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)) {
/* Get security descriptor */
return ret;
}
+
+int
+do_ntfs_umount(struct _ntfs_volume *vol)
+{
+ DEBUG("Unmounting NTFS volume");
+ if (ntfs_umount(vol, FALSE))
+ return WIMLIB_ERR_NTFS_3G;
+ else
+ return 0;
+}
+
int
build_dentry_tree_ntfs(struct wim_dentry **root_p,
const char *device,
ntfs_volume *vol;
ntfs_inode *root_ni;
int ret;
- ntfs_volume **ntfs_vol_p = extra_arg;
DEBUG("Mounting NTFS volume `%s' read-only", device);
FILE_NAME_POSIX, lookup_table,
inode_table,
sd_set,
- config, ntfs_vol_p,
+ config, vol,
add_image_flags,
progress_func);
out_cleanup:
ntfs_inode_close(vol->secure_ni);
if (ret) {
- if (ntfs_umount(vol, FALSE) != 0) {
+ if (do_ntfs_umount(vol)) {
ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'",
device);
if (ret == 0)
} else {
/* We need to leave the NTFS volume mounted so that we can read
* the NTFS files again when we are actually writing the WIM */
- *ntfs_vol_p = vol;
+ *(ntfs_volume**)extra_arg = vol;
}
return ret;
}
git://wimlib.net / wimlib / blobdiff