#include "wimlib/lookup_table.h"
#include "wimlib/metadata.h"
#include "wimlib/resource.h"
+#include "wimlib/security.h"
#include "wimlib/sha1.h"
#include "wimlib/timestamp.h"
#define WIM_ADS_ENTRY_DISK_SIZE 38
-/* WIM directory entry (on-disk format) */
+/* On-disk format of a WIM dentry (directory entry), located in the metadata
+ * resource for a WIM image. */
struct wim_dentry_on_disk {
+
+ /* Length of this directory entry in bytes, not including any alternate
+ * data stream entries. Should be a multiple of 8 so that the following
+ * dentry or alternate data stream entry is aligned on an 8-byte
+ * boundary. (If not, wimlib will round it up.) It must be at least as
+ * long as the fixed-length fields of the dentry (WIM_DENTRY_DISK_SIZE),
+ * plus the lengths of the file name and/or short name if present.
+ *
+ * It is also possible for this field to be 0. This situation, which is
+ * undocumented, indicates the end of a list of sibling nodes in a
+ * directory. It also means the real length is 8, because the dentry
+ * included only the length field, but that takes up 8 bytes. */
le64 length;
+
+ /* Attributes of the file or directory. This is a bitwise OR of the
+ * FILE_ATTRIBUTE_* constants and should correspond to the value
+ * retrieved by GetFileAttributes() on Windows. */
le32 attributes;
+
+ /* A value that specifies the security descriptor for this file or
+ * directory. If -1, the file or directory has no security descriptor.
+ * Otherwise, it is a 0-based index into the WIM image's table of
+ * security descriptors (see: `struct wim_security_data') */
sle32 security_id;
+
+ /* Offset, in bytes, from the start of the uncompressed metadata
+ * resource of this directory's child directory entries, or 0 if this
+ * directory entry does not correspond to a directory or otherwise does
+ * not have any children. */
le64 subdir_offset;
+
+ /* Reserved fields */
le64 unused_1;
le64 unused_2;
+
+
+ /* Creation time, last access time, and last write time, in
+ * 100-nanosecond intervals since 12:00 a.m UTC January 1, 1601. They
+ * should correspond to the times gotten by calling GetFileTime() on
+ * Windows. */
le64 creation_time;
le64 last_access_time;
le64 last_write_time;
+
+ /* Vaguely, the SHA-1 message digest ("hash") of the file's contents.
+ * More specifically, this is for the "unnamed data stream" rather than
+ * any "alternate data streams". This hash value is used to look up the
+ * corresponding entry in the WIM's stream lookup table to actually find
+ * the file contents within the WIM.
+ *
+ * If the file has no unnamed data stream (e.g. is a directory), then
+ * this field will be all zeroes. If the unnamed data stream is empty
+ * (i.e. an "empty file"), then this field is also expected to be all
+ * zeroes. (It will be if wimlib created the WIM image, at least;
+ * otherwise it can't be ruled out that the SHA-1 message digest of 0
+ * bytes of data is given explicitly.)
+ *
+ * If the file has reparse data, then this field will instead specify
+ * the SHA-1 message digest of the reparse data. If it is somehow
+ * possible for a file to have both an unnamed data stream and reparse
+ * data, then this is not handled by wimlib.
+ *
+ * As a further special case, if this field is all zeroes but there is
+ * an alternate data stream entry with no name and a nonzero SHA-1
+ * message digest field, then that hash must be used instead of this
+ * one. (wimlib does not use this quirk on WIM images it creates.)
+ */
u8 unnamed_stream_hash[SHA1_HASH_SIZE];
+
+ /* The format of the following data is not yet completely known and they
+ * do not correspond to Microsoft's documentation.
+ *
+ * If this directory entry is for a reparse point (has
+ * FILE_ATTRIBUTE_REPARSE_POINT set in the attributes field), then the
+ * version of the following fields containing the reparse tag is valid.
+ * Furthermore, the field notated as not_rpfixed, as far as I can tell,
+ * is supposed to be set to 1 if reparse point fixups (a.k.a. fixing the
+ * targets of absolute symbolic links) were *not* done, and otherwise 0.
+ *
+ * If this directory entry is not for a reparse point, then the version
+ * of the following fields containing the hard_link_group_id is valid.
+ * All MS says about this field is that "If this file is part of a hard
+ * link set, all the directory entries in the set will share the same
+ * value in this field.". However, more specifically I have observed
+ * the following:
+ * - If the file is part of a hard link set of size 1, then the
+ * hard_link_group_id should be set to either 0, which is treated
+ * specially as indicating "not hardlinked", or any unique value.
+ * - The specific nonzero values used to identity hard link sets do
+ * not matter, as long as they are unique.
+ * - However, due to bugs in Microsoft's software, it is actually NOT
+ * guaranteed that directory entries that share the same hard link
+ * group ID are actually hard linked to each either. We have to
+ * handle this by using special code to use distinguishing features
+ * (which is possible because some information about the underlying
+ * inode is repeated in each dentry) to split up these fake hard link
+ * groups into what they actually are supposed to be.
+ */
union {
struct {
le32 rp_unknown_1;
le64 hard_link_group_id;
} _packed_attribute nonreparse;
};
+
+ /* Number of alternate data stream entries that directly follow this
+ * dentry on-disk. */
le16 num_alternate_data_streams;
+
+ /* Length of this file's UTF-16LE encoded short name (8.3 DOS-compatible
+ * name), if present, in bytes, excluding the null terminator. If this
+ * file has no short name, then this field should be 0. */
le16 short_name_nbytes;
+
+ /* Length of this file's UTF-16LE encoded "long" name, excluding the
+ * null terminator. If this file has no short name, then this field
+ * should be 0. It's expected that only the root dentry has this field
+ * set to 0. */
le16 file_name_nbytes;
- /* Follewed by variable length file name, if file_name_nbytes != 0 */
- utf16lechar file_name[];
+ /* Followed by variable length file name, in UTF16-LE, if
+ * file_name_nbytes != 0. Includes null terminator. */
+ /*utf16lechar file_name[];*/
- /* Followed by variable length short name, if short_name_nbytes != 0 */
+ /* Followed by variable length short name, in UTF16-LE, if
+ * short_name_nbytes != 0. Includes null terminator. */
/*utf16lechar short_name[];*/
} _packed_attribute;
dentry->short_name_nbytes);
}
-/* Return %true iff the alternate data stream entry @entry has the UTF-16LE
- * stream name @name that has length @name_nbytes bytes. */
-static inline bool
-ads_entry_has_name(const struct wim_ads_entry *entry,
- const utf16lechar *name, size_t name_nbytes)
-{
- return entry->stream_name_nbytes == name_nbytes &&
- memcmp(entry->stream_name, name, name_nbytes) == 0;
-}
-
/* Duplicates a string of system-dependent encoding into a UTF-16LE string and
* returns the string and its length, in bytes, in the pointer arguments. Frees
* any existing string at the return location before overwriting it. */
/* Calculate the full path of @dentry. The full path of its parent must have
* already been calculated, or it must be the root dentry. */
-static int
+int
calculate_dentry_full_path(struct wim_dentry *dentry)
{
tchar *full_path;
return 0;
if (dentry_is_root(dentry)) {
- full_path = TSTRDUP(T("/"));
+ static const tchar _root_path[] = {WIM_PATH_SEPARATOR, T('\0')};
+ full_path = TSTRDUP(_root_path);
if (!full_path)
return WIMLIB_ERR_NOMEM;
full_path_nbytes = 1 * sizeof(tchar);
if (!full_path)
return WIMLIB_ERR_NOMEM;
memcpy(full_path, parent_full_path, parent_full_path_nbytes);
- full_path[parent_full_path_nbytes / sizeof(tchar)] = T('/');
+ full_path[parent_full_path_nbytes / sizeof(tchar)] = WIM_PATH_SEPARATOR;
#if TCHAR_IS_UTF16LE
memcpy(&full_path[parent_full_path_nbytes / sizeof(tchar) + 1],
dentry->file_name,
}
}
+/* Case-sensitive UTF-16LE dentry or stream name comparison. Used on both UNIX
+ * (always) and Windows (sometimes) */
static int
-compare_utf16le_names(const utf16lechar *name1, size_t nbytes1,
- const utf16lechar *name2, size_t nbytes2)
+compare_utf16le_names_case_sensitive(const utf16lechar *name1, size_t nbytes1,
+ const utf16lechar *name2, size_t nbytes2)
{
+ /* Return the result if the strings differ up to their minimum length.
+ * Note that we cannot use strcmp() or strncmp() here, as the strings
+ * are in UTF-16LE format. */
int result = memcmp(name1, name2, min(nbytes1, nbytes2));
if (result)
return result;
+
+ /* The strings are the same up to their minimum length, so return a
+ * result based on their lengths. */
+ if (nbytes1 < nbytes2)
+ return -1;
+ else if (nbytes1 > nbytes2)
+ return 1;
+ else
+ return 0;
+}
+
+#ifdef __WIN32__
+/* Windoze: Case-insensitive UTF-16LE dentry or stream name comparison */
+static int
+compare_utf16le_names_case_insensitive(const utf16lechar *name1, size_t nbytes1,
+ const utf16lechar *name2, size_t nbytes2)
+{
+ /* Return the result if the strings differ up to their minimum length.
+ * */
+ int result = _wcsnicmp((const wchar_t*)name1, (const wchar_t*)name2,
+ min(nbytes1 / 2, nbytes2 / 2));
+ if (result)
+ return result;
+
+ /* The strings are the same up to their minimum length, so return a
+ * result based on their lengths. */
+ if (nbytes1 < nbytes2)
+ return -1;
+ else if (nbytes1 > nbytes2)
+ return 1;
else
- return (int)nbytes1 - (int)nbytes2;
+ return 0;
+}
+#endif /* __WIN32__ */
+
+#ifdef __WIN32__
+# define compare_utf16le_names compare_utf16le_names_case_insensitive
+#else
+# define compare_utf16le_names compare_utf16le_names_case_sensitive
+#endif
+
+
+#ifdef __WIN32__
+static int
+dentry_compare_names_case_insensitive(const struct wim_dentry *d1,
+ const struct wim_dentry *d2)
+{
+ return compare_utf16le_names_case_insensitive(d1->file_name,
+ d1->file_name_nbytes,
+ d2->file_name,
+ d2->file_name_nbytes);
}
+#endif /* __WIN32__ */
static int
-dentry_compare_names(const struct wim_dentry *d1, const struct wim_dentry *d2)
+dentry_compare_names_case_sensitive(const struct wim_dentry *d1,
+ const struct wim_dentry *d2)
{
- return compare_utf16le_names(d1->file_name, d1->file_name_nbytes,
- d2->file_name, d2->file_name_nbytes);
+ return compare_utf16le_names_case_sensitive(d1->file_name,
+ d1->file_name_nbytes,
+ d2->file_name,
+ d2->file_name_nbytes);
}
+#ifdef __WIN32__
+# define dentry_compare_names dentry_compare_names_case_insensitive
+#else
+# define dentry_compare_names dentry_compare_names_case_sensitive
+#endif
+/* Return %true iff the alternate data stream entry @entry has the UTF-16LE
+ * stream name @name that has length @name_nbytes bytes. */
+static inline bool
+ads_entry_has_name(const struct wim_ads_entry *entry,
+ const utf16lechar *name, size_t name_nbytes)
+{
+ return !compare_utf16le_names(name, name_nbytes,
+ entry->stream_name,
+ entry->stream_name_nbytes);
+}
+
+/* Given a UTF-16LE filename and a directory, look up the dentry for the file.
+ * Return it if found, otherwise NULL. This is case-sensitive on UNIX and
+ * case-insensitive on Windows. */
struct wim_dentry *
get_dentry_child_with_utf16le_name(const struct wim_dentry *dentry,
const utf16lechar *name,
size_t name_nbytes)
{
- struct rb_node *node = dentry->d_inode->i_children.rb_node;
+ struct rb_node *node;
+
+#ifdef __WIN32__
+ node = dentry->d_inode->i_children_case_insensitive.rb_node;
+#else
+ node = dentry->d_inode->i_children.rb_node;
+#endif
+
struct wim_dentry *child;
while (node) {
+ #ifdef __WIN32__
+ child = rb_entry(node, struct wim_dentry, rb_node_case_insensitive);
+ #else
child = rbnode_dentry(node);
+ #endif
int result = compare_utf16le_names(name, name_nbytes,
child->file_name,
child->file_name_nbytes);
node = node->rb_left;
else if (result > 0)
node = node->rb_right;
- else
+ else {
+ #ifdef __WIN32__
+ if (!list_empty(&child->case_insensitive_conflict_list))
+ {
+ WARNING("Result of case-insensitive lookup is ambiguous "
+ "(returning \"%ls\" instead of \"%ls\")",
+ child->file_name,
+ container_of(child->case_insensitive_conflict_list.next,
+ struct wim_dentry,
+ case_insensitive_conflict_list)->file_name);
+ }
+ #endif
return child;
+ }
}
return NULL;
}
}
p = path;
while (1) {
- while (*p == cpu_to_le16('/'))
+ while (*p == cpu_to_le16(WIM_PATH_SEPARATOR))
p++;
if (*p == cpu_to_le16('\0'))
break;
pp = p;
- while (*pp != cpu_to_le16('/') && *pp != cpu_to_le16('\0'))
+ while (*pp != cpu_to_le16(WIM_PATH_SEPARATOR) &&
+ *pp != cpu_to_le16('\0'))
pp++;
cur_dentry = get_dentry_child_with_utf16le_name(parent_dentry, p,
to_parent_name(tchar *buf, size_t len)
{
ssize_t i = (ssize_t)len - 1;
- while (i >= 0 && buf[i] == T('/'))
+ while (i >= 0 && buf[i] == WIM_PATH_SEPARATOR)
i--;
- while (i >= 0 && buf[i] != T('/'))
+ while (i >= 0 && buf[i] != WIM_PATH_SEPARATOR)
i--;
- while (i >= 0 && buf[i] == T('/'))
+ while (i >= 0 && buf[i] == WIM_PATH_SEPARATOR)
i--;
buf[i + 1] = T('\0');
}
inode->i_next_stream_id = 1;
inode->i_not_rpfixed = 1;
INIT_LIST_HEAD(&inode->i_list);
- #ifdef WITH_FUSE
- if (pthread_mutex_init(&inode->i_mutex, NULL) != 0) {
- ERROR_WITH_ERRNO("Error initializing mutex");
- FREE(inode);
- return NULL;
- }
- #endif
INIT_LIST_HEAD(&inode->i_dentry);
}
return inode;
destroy_ads_entry(&inode->i_ads_entries[i]);
FREE(inode->i_ads_entries);
}
- #ifdef WITH_FUSE
- wimlib_assert(inode->i_num_opened_fds == 0);
- FREE(inode->i_fds);
- pthread_mutex_destroy(&inode->i_mutex);
- #endif
/* HACK: This may instead delete the inode from i_list, but the
* hlist_del() behaves the same as list_del(). */
- hlist_del(&inode->i_hlist);
- FREE(inode->i_extracted_file);
+ if (!hlist_unhashed(&inode->i_hlist))
+ hlist_del(&inode->i_hlist);
FREE(inode);
}
}
for_dentry_in_tree_depth(root, do_free_dentry, lookup_table);
}
+#ifdef __WIN32__
+
+/* Insert a dentry into the case insensitive index for a directory.
+ *
+ * This is a red-black tree, but when multiple dentries share the same
+ * case-insensitive name, only one is inserted into the tree itself; the rest
+ * are connected in a list.
+ */
+static struct wim_dentry *
+dentry_add_child_case_insensitive(struct wim_dentry *parent,
+ struct wim_dentry *child)
+{
+ struct rb_root *root;
+ struct rb_node **new;
+ struct rb_node *rb_parent;
+
+ root = &parent->d_inode->i_children_case_insensitive;
+ new = &root->rb_node;
+ rb_parent = NULL;
+ while (*new) {
+ struct wim_dentry *this = container_of(*new, struct wim_dentry,
+ rb_node_case_insensitive);
+ int result = dentry_compare_names_case_insensitive(child, this);
+
+ rb_parent = *new;
+
+ if (result < 0)
+ new = &((*new)->rb_left);
+ else if (result > 0)
+ new = &((*new)->rb_right);
+ else
+ return this;
+ }
+ rb_link_node(&child->rb_node_case_insensitive, rb_parent, new);
+ rb_insert_color(&child->rb_node_case_insensitive, root);
+ return NULL;
+}
+#endif
+
/*
* Links a dentry into the directory tree.
*
* @parent: The dentry that will be the parent of @child.
* @child: The dentry to link.
*
- * Returns non-NULL if a duplicate dentry was detected.
+ * Returns NULL if successful. If @parent already contains a dentry with the
+ * same case-sensitive name as @child, the pointer to this duplicate dentry is
+ * returned.
*/
struct wim_dentry *
dentry_add_child(struct wim_dentry * restrict parent,
struct wim_dentry * restrict child)
{
+ struct rb_root *root;
+ struct rb_node **new;
+ struct rb_node *rb_parent;
+
wimlib_assert(dentry_is_directory(parent));
wimlib_assert(parent != child);
- struct rb_root *root = &parent->d_inode->i_children;
- struct rb_node **new = &(root->rb_node);
- struct rb_node *rb_parent = NULL;
-
+ /* Case sensitive child dentry index */
+ root = &parent->d_inode->i_children;
+ new = &root->rb_node;
+ rb_parent = NULL;
while (*new) {
struct wim_dentry *this = rbnode_dentry(*new);
- int result = dentry_compare_names(child, this);
+ int result = dentry_compare_names_case_sensitive(child, this);
rb_parent = *new;
child->parent = parent;
rb_link_node(&child->rb_node, rb_parent, new);
rb_insert_color(&child->rb_node, root);
+
+#ifdef __WIN32__
+ {
+ struct wim_dentry *existing;
+ existing = dentry_add_child_case_insensitive(parent, child);
+ if (existing) {
+ list_add(&child->case_insensitive_conflict_list,
+ &existing->case_insensitive_conflict_list);
+ child->rb_node_case_insensitive.__rb_parent_color = 0;
+ } else {
+ INIT_LIST_HEAD(&child->case_insensitive_conflict_list);
+ }
+ }
+#endif
return NULL;
}
void
unlink_dentry(struct wim_dentry *dentry)
{
- if (!dentry_is_root(dentry))
- rb_erase(&dentry->rb_node, &dentry->parent->d_inode->i_children);
+ struct wim_dentry *parent = dentry->parent;
+
+ if (parent == dentry)
+ return;
+ rb_erase(&dentry->rb_node, &parent->d_inode->i_children);
+#ifdef __WIN32__
+ if (dentry->rb_node_case_insensitive.__rb_parent_color) {
+ /* This dentry was in the case-insensitive red-black tree. */
+ rb_erase(&dentry->rb_node_case_insensitive,
+ &parent->d_inode->i_children_case_insensitive);
+ if (!list_empty(&dentry->case_insensitive_conflict_list)) {
+ /* Make a different case-insensitively-the-same dentry
+ * be the "representative" in the red-black tree. */
+ struct list_head *next;
+ struct wim_dentry *other;
+ struct wim_dentry *existing;
+
+ next = dentry->case_insensitive_conflict_list.next;
+ other = list_entry(next, struct wim_dentry, case_insensitive_conflict_list);
+ existing = dentry_add_child_case_insensitive(parent, other);
+ wimlib_assert(existing == NULL);
+ }
+ }
+ list_del(&dentry->case_insensitive_conflict_list);
+#endif
}
/*
}
#endif /* !__WIN32__ */
-/* Replace weird characters in filenames and alternate data stream names.
- *
- * In particular we do not want the path separator to appear in any names, as
- * that would make it possible for a "malicious" WIM to extract itself to any
- * location it wanted to. */
-static void
-replace_forbidden_characters(utf16lechar *name)
-{
- utf16lechar *p;
-
- for (p = name; *p; p++) {
- #ifdef __WIN32__
- if (wcschr(L"<>:\"/\\|?*", (wchar_t)*p))
- #else
- if (*p == cpu_to_le16('/'))
- #endif
- {
- if (name) {
- WARNING("File, directory, or stream name \"%"WS"\"\n"
- " contains forbidden characters; "
- "substituting replacement characters.",
- name);
- name = NULL;
- }
- #ifdef __WIN32__
- *p = cpu_to_le16(0xfffd);
- #else
- *p = cpu_to_le16('?');
- #endif
- }
- }
-}
-
/*
* Reads the alternate data stream entries of a WIM dentry.
*
disk_entry->stream_name,
cur_entry->stream_name_nbytes);
cur_entry->stream_name[cur_entry->stream_name_nbytes / 2] = cpu_to_le16(0);
- replace_forbidden_characters(cur_entry->stream_name);
}
/* It's expected that the size of every ADS entry is a multiple
memcpy(file_name, p, file_name_nbytes);
p += file_name_nbytes + 2;
file_name[file_name_nbytes / 2] = cpu_to_le16(0);
- replace_forbidden_characters(file_name);
} else {
file_name = NULL;
}
memcpy(short_name, p, short_name_nbytes);
p += short_name_nbytes + 2;
short_name[short_name_nbytes / 2] = cpu_to_le16(0);
- replace_forbidden_characters(short_name);
} else {
short_name = NULL;
}
return ret;
}
+static const tchar *
+dentry_get_file_type_string(const struct wim_dentry *dentry)
+{
+ const struct wim_inode *inode = dentry->d_inode;
+ if (inode_is_directory(inode))
+ return T("directory");
+ else if (inode_is_symlink(inode))
+ return T("symbolic link");
+ else
+ return T("file");
+}
+
/* Reads the children of a dentry, and all their children, ..., etc. from the
* metadata resource and into the dentry tree.
*
* Returns zero on success; nonzero on failure.
*/
int
-read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len,
- struct wim_dentry *dentry)
+read_dentry_tree(const u8 * restrict metadata_resource,
+ u64 metadata_resource_len,
+ struct wim_dentry * restrict dentry)
{
u64 cur_offset = dentry->subdir_offset;
struct wim_dentry *child;
+ struct wim_dentry *duplicate;
+ struct wim_dentry *parent;
struct wim_dentry cur_child;
int ret;
if (cur_offset == 0)
return 0;
+ /* Check for cyclic directory structure */
+ for (parent = dentry->parent; !dentry_is_root(parent); parent = parent->parent)
+ {
+ if (unlikely(parent->subdir_offset == cur_offset)) {
+ ERROR("Cyclic directory structure directed: children "
+ "of \"%"TS"\" coincide with children of \"%"TS"\"",
+ dentry_full_path(dentry),
+ dentry_full_path(parent));
+ return WIMLIB_ERR_INVALID_DENTRY;
+ }
+ }
+
/* Find and read all the children of @dentry. */
for (;;) {
* entries. */
cur_offset += dentry_total_length(child);
- if (dentry_add_child(dentry, child)) {
- WARNING("Ignoring duplicate dentry \"%"WS"\"",
- child->file_name);
- WARNING("(In directory \"%"TS"\")", dentry_full_path(dentry));
+ if (unlikely(!dentry_has_long_name(child))) {
+ WARNING("Ignoring unnamed dentry in "
+ "directory \"%"TS"\"",
+ dentry_full_path(dentry));
free_dentry(child);
- } else {
- inode_add_dentry(child, child->d_inode);
- /* If there are children of this child, call this
- * procedure recursively. */
- if (child->subdir_offset != 0) {
- if (dentry_is_directory(child)) {
- ret = read_dentry_tree(metadata_resource,
- metadata_resource_len,
- child);
- if (ret)
- break;
- } else {
- WARNING("Ignoring children of non-directory \"%"TS"\"",
- dentry_full_path(child));
- }
- }
+ continue;
+ }
+ duplicate = dentry_add_child(dentry, child);
+ if (unlikely(duplicate)) {
+ const tchar *child_type, *duplicate_type;
+ child_type = dentry_get_file_type_string(child);
+ duplicate_type = dentry_get_file_type_string(duplicate);
+ WARNING("Ignoring duplicate %"TS" \"%"TS"\" "
+ "(the WIM image already contains a %"TS" "
+ "at that path with the exact same name)",
+ child_type, dentry_full_path(duplicate),
+ duplicate_type);
+ free_dentry(child);
+ continue;
+ }
+
+ inode_add_dentry(child, child->d_inode);
+ /* If there are children of this child, call this
+ * procedure recursively. */
+ if (child->subdir_offset != 0) {
+ if (likely(dentry_is_directory(child))) {
+ ret = read_dentry_tree(metadata_resource,
+ metadata_resource_len,
+ child);
+ if (ret)
+ break;
+ } else {
+ WARNING("Ignoring children of non-directory \"%"TS"\"",
+ dentry_full_path(child));
+ }
}
}
return ret;
disk_dentry->file_name_nbytes = cpu_to_le16(dentry->file_name_nbytes);
p += sizeof(struct wim_dentry_on_disk);
+ wimlib_assert(dentry_is_root(dentry) != dentry_has_long_name(dentry));
+
if (dentry_has_long_name(dentry))
p = mempcpy(p, dentry->file_name, dentry->file_name_nbytes + 2);
* Returns pointer to the byte after the last byte we wrote.
*/
u8 *
-write_dentry_tree(const struct wim_dentry *root, u8 *p)
+write_dentry_tree(const struct wim_dentry * restrict root, u8 * restrict p)
{
DEBUG("Writing dentry tree.");
wimlib_assert(dentry_is_root(root));
/* Recursively write the rest of the dentry tree. */
return write_dentry_tree_recursive(root, p);
}
+
+
+static int
+init_wimlib_dentry(struct wimlib_dir_entry *wdentry,
+ struct wim_dentry *dentry,
+ const WIMStruct *wim)
+{
+ int ret;
+ size_t dummy;
+ const struct wim_inode *inode = dentry->d_inode;
+ struct wim_lookup_table_entry *lte;
+
+#if TCHAR_IS_UTF16LE
+ wdentry->filename = dentry->file_name;
+ wdentry->dos_name = dentry->short_name;
+#else
+ if (dentry_has_long_name(dentry)) {
+ ret = utf16le_to_tstr(dentry->file_name,
+ dentry->file_name_nbytes,
+ (tchar**)&wdentry->filename,
+ &dummy);
+ if (ret)
+ return ret;
+ }
+ if (dentry_has_short_name(dentry)) {
+ ret = utf16le_to_tstr(dentry->short_name,
+ dentry->short_name_nbytes,
+ (tchar**)&wdentry->dos_name,
+ &dummy);
+ if (ret)
+ return ret;
+ }
+#endif
+ ret = calculate_dentry_full_path(dentry);
+ if (ret)
+ return ret;
+ wdentry->full_path = dentry->_full_path;
+
+ for (struct wim_dentry *d = dentry; !dentry_is_root(d); d = d->parent)
+ wdentry->depth++;
+
+ if (inode->i_security_id >= 0) {
+ const struct wim_security_data *sd = wim_const_security_data(wim);
+ wdentry->security_descriptor = sd->descriptors[inode->i_security_id];
+ wdentry->security_descriptor_size = sd->sizes[inode->i_security_id];
+ }
+ wdentry->reparse_tag = inode->i_reparse_tag;
+ wdentry->num_links = inode->i_nlink;
+ wdentry->attributes = inode->i_attributes;
+ wdentry->hard_link_group_id = inode->i_ino;
+ wdentry->creation_time = wim_timestamp_to_timespec(inode->i_creation_time);
+ wdentry->last_write_time = wim_timestamp_to_timespec(inode->i_last_write_time);
+ wdentry->last_access_time = wim_timestamp_to_timespec(inode->i_last_access_time);
+
+ lte = inode_unnamed_lte(inode, wim->lookup_table);
+ if (lte)
+ lte_to_wimlib_resource_entry(lte, &wdentry->streams[0].resource);
+
+ for (unsigned i = 0; i < inode->i_num_ads; i++) {
+ if (inode->i_ads_entries[i].stream_name == NULL)
+ continue;
+ lte = inode_stream_lte(inode, i + 1, wim->lookup_table);
+ wdentry->num_named_streams++;
+ if (lte) {
+ lte_to_wimlib_resource_entry(lte, &wdentry->streams[
+ wdentry->num_named_streams].resource);
+ }
+ #if TCHAR_IS_UTF16LE
+ wdentry->streams[wdentry->num_named_streams].stream_name =
+ inode->i_ads_entries[i].stream_name;
+ #else
+ size_t dummy;
+
+ ret = utf16le_to_tstr(inode->i_ads_entries[i].stream_name,
+ inode->i_ads_entries[i].stream_name_nbytes,
+ (tchar**)&wdentry->streams[
+ wdentry->num_named_streams].stream_name,
+ &dummy);
+ if (ret)
+ return ret;
+ #endif
+ }
+ return 0;
+}
+
+static void
+free_wimlib_dentry(struct wimlib_dir_entry *wdentry)
+{
+#if !TCHAR_IS_UTF16LE
+ FREE((tchar*)wdentry->filename);
+ FREE((tchar*)wdentry->dos_name);
+ for (unsigned i = 1; i <= wdentry->num_named_streams; i++)
+ FREE((tchar*)wdentry->streams[i].stream_name);
+#endif
+ FREE(wdentry);
+}
+
+struct iterate_dir_tree_ctx {
+ WIMStruct *wim;
+ int flags;
+ wimlib_iterate_dir_tree_callback_t cb;
+ void *user_ctx;
+};
+
+static int
+do_iterate_dir_tree(WIMStruct *wim,
+ struct wim_dentry *dentry, int flags,
+ wimlib_iterate_dir_tree_callback_t cb,
+ void *user_ctx);
+
+static int
+call_do_iterate_dir_tree(struct wim_dentry *dentry, void *_ctx)
+{
+ struct iterate_dir_tree_ctx *ctx = _ctx;
+ return do_iterate_dir_tree(ctx->wim, dentry, ctx->flags,
+ ctx->cb, ctx->user_ctx);
+}
+
+static int
+do_iterate_dir_tree(WIMStruct *wim,
+ struct wim_dentry *dentry, int flags,
+ wimlib_iterate_dir_tree_callback_t cb,
+ void *user_ctx)
+{
+ u32 level;
+ struct wimlib_dir_entry *wdentry;
+ int ret = WIMLIB_ERR_NOMEM;
+
+
+ wdentry = CALLOC(1, sizeof(struct wimlib_dir_entry) +
+ (1 + dentry->d_inode->i_num_ads) *
+ sizeof(struct wimlib_stream_entry));
+ if (!wdentry)
+ goto out;
+
+ ret = init_wimlib_dentry(wdentry, dentry, wim);
+ if (ret)
+ goto out_free_wimlib_dentry;
+
+ if (!(flags & WIMLIB_ITERATE_DIR_TREE_FLAG_CHILDREN)) {
+ ret = (*cb)(wdentry, user_ctx);
+ if (ret)
+ goto out_free_wimlib_dentry;
+ }
+
+ if (flags & (WIMLIB_ITERATE_DIR_TREE_FLAG_RECURSIVE |
+ WIMLIB_ITERATE_DIR_TREE_FLAG_CHILDREN))
+ {
+ struct iterate_dir_tree_ctx ctx = {
+ .wim = wim,
+ .flags = flags &= ~WIMLIB_ITERATE_DIR_TREE_FLAG_CHILDREN,
+ .cb = cb,
+ .user_ctx = user_ctx,
+ };
+ ret = for_dentry_child(dentry, call_do_iterate_dir_tree, &ctx);
+ }
+out_free_wimlib_dentry:
+ free_wimlib_dentry(wdentry);
+out:
+ return ret;
+}
+
+struct image_iterate_dir_tree_ctx {
+ const tchar *path;
+ int flags;
+ wimlib_iterate_dir_tree_callback_t cb;
+ void *user_ctx;
+};
+
+
+static int
+image_do_iterate_dir_tree(WIMStruct *wim)
+{
+ struct image_iterate_dir_tree_ctx *ctx = wim->private;
+ struct wim_dentry *dentry;
+
+ dentry = get_dentry(wim, ctx->path);
+ if (!dentry)
+ return WIMLIB_ERR_PATH_DOES_NOT_EXIST;
+ return do_iterate_dir_tree(wim, dentry, ctx->flags, ctx->cb, ctx->user_ctx);
+}
+
+WIMLIBAPI int
+wimlib_iterate_dir_tree(WIMStruct *wim, int image, const tchar *path,
+ int flags,
+ wimlib_iterate_dir_tree_callback_t cb, void *user_ctx)
+{
+ int ret;
+ struct wim_dentry *dentry;
+ struct image_iterate_dir_tree_ctx ctx = {
+ .path = path,
+ .flags = flags,
+ .cb = cb,
+ .user_ctx = user_ctx,
+ };
+ wim->private = &ctx;
+ return for_image(wim, image, image_do_iterate_dir_tree);
+}
git://wimlib.net / wimlib / blobdiff