X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fdentry.c;h=2e12f339d5eceba57ef1cd80bd295c959e94c176;hp=beb963d2c839f96517aac79b8ad3f9259db74270;hb=0ea2bc5fcf915a313935c00a76d64aa60b5ae3c9;hpb=f9a65bc36b0c82a7c46feec9140129fd5110289c diff --git a/src/dentry.c b/src/dentry.c index beb963d2..2e12f339 100644 --- a/src/dentry.c +++ b/src/dentry.c @@ -1,16 +1,15 @@ /* * dentry.c * - * A dentry (directory entry) contains the metadata for a file. In the WIM file - * format, the dentries are stored in the "metadata resource" section right - * after the security data. Each image in the WIM file has its own metadata - * resource with its own security data and dentry tree. Dentries in different - * images may share file resources by referring to the same lookup table - * entries. + * In the WIM file format, the dentries are stored in the "metadata resource" + * section right after the security data. Each image in the WIM file has its + * own metadata resource with its own security data and dentry tree. Dentries + * in different images may share file resources by referring to the same lookup + * table entries. */ /* - * Copyright (C) 2012 Eric Biggers + * Copyright (C) 2012, 2013 Eric Biggers * * This file is part of wimlib, a library for working with WIM files. * @@ -27,30 +26,24 @@ * wimlib; if not, see http://www.gnu.org/licenses/. */ -#include -#include -#include -#include - +#include "buffer_io.h" #include "dentry.h" -#include "io.h" #include "lookup_table.h" -#include "sha1.h" #include "timestamp.h" #include "wimlib_internal.h" - +#include /* Calculates the unaligned length, in bytes, of an on-disk WIM dentry that has * a file name and short name that take the specified numbers of bytes. This * excludes any alternate data stream entries that may follow the dentry. */ -static u64 __dentry_correct_length_unaligned(u16 file_name_len, - u16 short_name_len) +static u64 +__dentry_correct_length_unaligned(u16 file_name_nbytes, u16 short_name_nbytes) { u64 length = WIM_DENTRY_DISK_SIZE; - if (file_name_len) - length += file_name_len + 2; - if (short_name_len) - length += short_name_len + 2; + if (file_name_nbytes) + length += file_name_nbytes + 2; + if (short_name_nbytes) + length += short_name_nbytes + 2; return length; } @@ -58,121 +51,113 @@ static u64 __dentry_correct_length_unaligned(u16 file_name_len, * the file name length and short name length. Note that dentry->length is * ignored; also, this excludes any alternate data stream entries that may * follow the dentry. */ -static u64 dentry_correct_length_unaligned(const struct dentry *dentry) +static u64 +dentry_correct_length_unaligned(const struct wim_dentry *dentry) { - return __dentry_correct_length_unaligned(dentry->file_name_len, - dentry->short_name_len); + return __dentry_correct_length_unaligned(dentry->file_name_nbytes, + dentry->short_name_nbytes); } /* Return the "correct" value to write in the length field of a WIM dentry, * based on the file name length and short name length. */ -static u64 dentry_correct_length(const struct dentry *dentry) +static u64 +dentry_correct_length(const struct wim_dentry *dentry) { return (dentry_correct_length_unaligned(dentry) + 7) & ~7; } -/* Return %true iff @dentry has the UTF-8 file name @name that has length - * @name_len bytes. */ -static bool dentry_has_name(const struct dentry *dentry, const char *name, - size_t name_len) +/* 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) { - if (dentry->file_name_utf8_len != name_len) - return false; - return memcmp(dentry->file_name_utf8, name, name_len) == 0; + return entry->stream_name_nbytes == name_nbytes && + memcmp(entry->stream_name, name, name_nbytes) == 0; } -/* Return %true iff the alternate data stream entry @entry has the UTF-8 stream - * name @name that has length @name_len bytes. */ -static inline bool ads_entry_has_name(const struct ads_entry *entry, - const char *name, size_t name_len) +/* 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. */ +static int +get_utf16le_name(const tchar *name, utf16lechar **name_utf16le_ret, + u16 *name_utf16le_nbytes_ret) { - if (entry->stream_name_utf8_len != name_len) - return false; - return memcmp(entry->stream_name_utf8, name, name_len) == 0; -} - -/* Duplicates a UTF-8 name into UTF-8 and UTF-16 strings and returns the strings - * and their lengths in the pointer arguments */ -int get_names(char **name_utf16_ret, char **name_utf8_ret, - u16 *name_utf16_len_ret, u16 *name_utf8_len_ret, - const char *name) -{ - size_t utf8_len; - size_t utf16_len; - char *name_utf16, *name_utf8; - - utf8_len = strlen(name); - - name_utf16 = utf8_to_utf16(name, utf8_len, &utf16_len); - - if (!name_utf16) - return WIMLIB_ERR_NOMEM; - - name_utf8 = MALLOC(utf8_len + 1); - if (!name_utf8) { - FREE(name_utf8); + utf16lechar *name_utf16le; + size_t name_utf16le_nbytes; + int ret; +#if TCHAR_IS_UTF16LE + name_utf16le_nbytes = tstrlen(name) * sizeof(utf16lechar); + name_utf16le = MALLOC(name_utf16le_nbytes + sizeof(utf16lechar)); + if (!name_utf16le) return WIMLIB_ERR_NOMEM; + memcpy(name_utf16le, name, name_utf16le_nbytes + sizeof(utf16lechar)); + ret = 0; +#else + + ret = tstr_to_utf16le(name, tstrlen(name), &name_utf16le, + &name_utf16le_nbytes); + if (ret == 0) { + if (name_utf16le_nbytes > 0xffff) { + FREE(name_utf16le); + ERROR("Multibyte string \"%"TS"\" is too long!", name); + ret = WIMLIB_ERR_INVALID_UTF8_STRING; + } } - memcpy(name_utf8, name, utf8_len + 1); - FREE(*name_utf8_ret); - FREE(*name_utf16_ret); - *name_utf8_ret = name_utf8; - *name_utf16_ret = name_utf16; - *name_utf8_len_ret = utf8_len; - *name_utf16_len_ret = utf16_len; - return 0; +#endif + if (ret == 0) { + FREE(*name_utf16le_ret); + *name_utf16le_ret = name_utf16le; + *name_utf16le_nbytes_ret = name_utf16le_nbytes; + } + return ret; } -/* Changes the name of a dentry to @new_name. Only changes the file_name and - * file_name_utf8 fields; does not change the short_name, short_name_utf8, or - * full_path_utf8 fields. Also recalculates its length. */ -static int change_dentry_name(struct dentry *dentry, const char *new_name) +/* Sets the name of a WIM dentry from a multibyte string. */ +int +set_dentry_name(struct wim_dentry *dentry, const tchar *new_name) { int ret; - - ret = get_names(&dentry->file_name, &dentry->file_name_utf8, - &dentry->file_name_len, &dentry->file_name_utf8_len, - new_name); - FREE(dentry->short_name); - dentry->short_name_len = 0; - if (ret == 0) + ret = get_utf16le_name(new_name, &dentry->file_name, + &dentry->file_name_nbytes); + if (ret == 0) { + /* Clear the short name and recalculate the dentry length */ + if (dentry_has_short_name(dentry)) { + FREE(dentry->short_name); + dentry->short_name = NULL; + dentry->short_name_nbytes = 0; + } dentry->length = dentry_correct_length(dentry); + } return ret; } -/* - * Changes the name of an alternate data stream */ -static int change_ads_name(struct ads_entry *entry, const char *new_name) -{ - return get_names(&entry->stream_name, &entry->stream_name_utf8, - &entry->stream_name_len, - &entry->stream_name_utf8_len, - new_name); -} - /* Returns the total length of a WIM alternate data stream entry on-disk, * including the stream name, the null terminator, AND the padding after the - * entry to align the next one (or the next dentry) on an 8-byte boundary. */ -static u64 ads_entry_total_length(const struct ads_entry *entry) + * entry to align the next ADS entry or dentry on an 8-byte boundary. */ +static u64 +ads_entry_total_length(const struct wim_ads_entry *entry) { u64 len = WIM_ADS_ENTRY_DISK_SIZE; - if (entry->stream_name_len) - len += entry->stream_name_len + 2; + if (entry->stream_name_nbytes) + len += entry->stream_name_nbytes + 2; return (len + 7) & ~7; } -static u64 __dentry_total_length(const struct dentry *dentry, u64 length) +static u64 +__dentry_total_length(const struct wim_dentry *dentry, u64 length) { - const struct inode *inode = dentry->d_inode; - for (u16 i = 0; i < inode->num_ads; i++) - length += ads_entry_total_length(&inode->ads_entries[i]); + const struct wim_inode *inode = dentry->d_inode; + for (u16 i = 0; i < inode->i_num_ads; i++) + length += ads_entry_total_length(&inode->i_ads_entries[i]); return (length + 7) & ~7; } /* Calculate the aligned *total* length of an on-disk WIM dentry. This includes * all alternate data streams. */ -u64 dentry_correct_total_length(const struct dentry *dentry) +u64 +dentry_correct_total_length(const struct wim_dentry *dentry) { return __dentry_total_length(dentry, dentry_correct_length_unaligned(dentry)); @@ -180,180 +165,195 @@ u64 dentry_correct_total_length(const struct dentry *dentry) /* Like dentry_correct_total_length(), but use the existing dentry->length field * instead of calculating its "correct" value. */ -static u64 dentry_total_length(const struct dentry *dentry) +static u64 +dentry_total_length(const struct wim_dentry *dentry) { return __dentry_total_length(dentry, dentry->length); } -/* Transfers file attributes from a `stat' buffer to a WIM "inode". */ -void stbuf_to_inode(const struct stat *stbuf, struct inode *inode) +int +for_dentry_in_rbtree(struct rb_node *root, + int (*visitor)(struct wim_dentry *, void *), + void *arg) { - if (S_ISLNK(stbuf->st_mode)) { - inode->attributes = FILE_ATTRIBUTE_REPARSE_POINT; - inode->reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK; - } else if (S_ISDIR(stbuf->st_mode)) { - inode->attributes = FILE_ATTRIBUTE_DIRECTORY; - } else { - inode->attributes = FILE_ATTRIBUTE_NORMAL; - } - if (sizeof(ino_t) >= 8) - inode->ino = (u64)stbuf->st_ino; - else - inode->ino = (u64)stbuf->st_ino | - ((u64)stbuf->st_dev << ((sizeof(ino_t) * 8) & 63)); - /* Set timestamps */ - inode->creation_time = timespec_to_wim_timestamp(&stbuf->st_mtim); - inode->last_write_time = timespec_to_wim_timestamp(&stbuf->st_mtim); - inode->last_access_time = timespec_to_wim_timestamp(&stbuf->st_atim); -} - -#ifdef WITH_FUSE -/* Transfers file attributes from a struct inode to a `stat' buffer. - * - * The lookup table entry tells us which stream in the inode we are statting. - * For a named data stream, everything returned is the same as the unnamed data - * stream except possibly the size and block count. */ -int inode_to_stbuf(const struct inode *inode, struct lookup_table_entry *lte, - struct stat *stbuf) -{ - if (inode_is_symlink(inode)) - stbuf->st_mode = S_IFLNK | 0777; - else if (inode_is_directory(inode)) - stbuf->st_mode = S_IFDIR | 0755; - else - stbuf->st_mode = S_IFREG | 0644; - - stbuf->st_ino = (ino_t)inode->ino; - stbuf->st_nlink = inode->link_count; - stbuf->st_uid = getuid(); - stbuf->st_gid = getgid(); - - if (lte) { - if (lte->resource_location == RESOURCE_IN_STAGING_FILE) { - wimlib_assert(lte->staging_file_name); - struct stat native_stat; - if (stat(lte->staging_file_name, &native_stat) != 0) { - DEBUG("Failed to stat `%s': %m", - lte->staging_file_name); - return -errno; - } - stbuf->st_size = native_stat.st_size; + int ret; + struct rb_node *node = root; + LIST_HEAD(stack); + while (1) { + if (node) { + list_add(&rbnode_dentry(node)->tmp_list, &stack); + node = node->rb_left; } else { - stbuf->st_size = wim_resource_size(lte); + struct list_head *next; + struct wim_dentry *dentry; + + next = stack.next; + if (next == &stack) + return 0; + dentry = container_of(next, struct wim_dentry, tmp_list); + list_del(next); + ret = visitor(dentry, arg); + if (ret != 0) + return ret; + node = dentry->rb_node.rb_right; } - } else { - stbuf->st_size = 0; } - - stbuf->st_atime = wim_timestamp_to_unix(inode->last_access_time); - stbuf->st_mtime = wim_timestamp_to_unix(inode->last_write_time); - stbuf->st_ctime = wim_timestamp_to_unix(inode->creation_time); - stbuf->st_blocks = (stbuf->st_size + 511) / 512; - return 0; } -#endif -/* - * Calls a function on all directory entries in a directory tree. It is called - * on a parent before its children. - */ -int for_dentry_in_tree(struct dentry *root, - int (*visitor)(struct dentry*, void*), void *arg) +static int +for_dentry_tree_in_rbtree_depth(struct rb_node *node, + int (*visitor)(struct wim_dentry*, void*), + void *arg) { int ret; - struct dentry *child; - - ret = visitor(root, arg); - - if (ret != 0) - return ret; - - child = root->d_inode->children; - - if (!child) - return 0; - - do { - ret = for_dentry_in_tree(child, visitor, arg); + if (node) { + ret = for_dentry_tree_in_rbtree_depth(node->rb_left, + visitor, arg); + if (ret != 0) + return ret; + ret = for_dentry_tree_in_rbtree_depth(node->rb_right, + visitor, arg); if (ret != 0) return ret; - child = child->next; - } while (child != root->d_inode->children); + ret = for_dentry_in_tree_depth(rbnode_dentry(node), visitor, arg); + if (ret != 0) + return ret; + } return 0; } -/* - * Like for_dentry_in_tree(), but the visitor function is always called on a - * dentry's children before on itself. - */ -int for_dentry_in_tree_depth(struct dentry *root, - int (*visitor)(struct dentry*, void*), void *arg) +static int +for_dentry_tree_in_rbtree(struct rb_node *node, + int (*visitor)(struct wim_dentry*, void*), + void *arg) { int ret; - struct dentry *child; - struct dentry *next; + if (node) { + ret = for_dentry_tree_in_rbtree(node->rb_left, visitor, arg); + if (ret != 0) + return ret; + ret = for_dentry_in_tree(rbnode_dentry(node), visitor, arg); + if (ret != 0) + return ret; + ret = for_dentry_tree_in_rbtree(node->rb_right, visitor, arg); + if (ret != 0) + return ret; + } + return 0; +} - child = root->d_inode->children; - if (child) { - do { - next = child->next; - ret = for_dentry_in_tree_depth(child, visitor, arg); - if (ret != 0) - return ret; - child = next; - } while (child != root->d_inode->children); +/* Calls a function on all directory entries in a WIM dentry tree. Logically, + * this is a pre-order traversal (the function is called on a parent dentry + * before its children), but sibling dentries will be visited in order as well. + * */ +int +for_dentry_in_tree(struct wim_dentry *root, + int (*visitor)(struct wim_dentry*, void*), void *arg) +{ + int ret = visitor(root, arg); + if (ret == 0) { + ret = for_dentry_tree_in_rbtree(root->d_inode->i_children.rb_node, + visitor, + arg); } - return visitor(root, arg); + return ret; } -/* - * Calculate the full path of @dentry, based on its parent's full path and on - * its UTF-8 file name. - */ -int calculate_dentry_full_path(struct dentry *dentry, void *ignore) +/* Like for_dentry_in_tree(), but the visitor function is always called on a + * dentry's children before on itself. */ +int +for_dentry_in_tree_depth(struct wim_dentry *root, + int (*visitor)(struct wim_dentry*, void*), void *arg) { - char *full_path; - u32 full_path_len; + int ret; + ret = for_dentry_tree_in_rbtree_depth(root->d_inode->i_children.rb_node, + visitor, arg); + if (ret == 0) + ret = visitor(root, arg); + return ret; +} + +/* Calculate the full path of @dentry. The full path of its parent must have + * already been calculated, or it must be the root dentry. */ +int +calculate_dentry_full_path(struct wim_dentry *dentry, void *ignore) +{ + tchar *full_path; + u32 full_path_nbytes; + + wimlib_assert(dentry_is_root(dentry) || + dentry->parent->full_path != NULL); + if (dentry_is_root(dentry)) { - full_path = MALLOC(2); + full_path = TSTRDUP(T("/")); if (!full_path) - goto oom; - full_path[0] = '/'; - full_path[1] = '\0'; - full_path_len = 1; + return WIMLIB_ERR_NOMEM; + full_path_nbytes = 1 * sizeof(tchar); } else { - char *parent_full_path; - u32 parent_full_path_len; - const struct dentry *parent = dentry->parent; + const struct wim_dentry *parent; + tchar *parent_full_path; + u32 parent_full_path_nbytes; + size_t filename_nbytes; + parent = dentry->parent; if (dentry_is_root(parent)) { - parent_full_path = ""; - parent_full_path_len = 0; + parent_full_path = T(""); + parent_full_path_nbytes = 0; } else { - parent_full_path = parent->full_path_utf8; - parent_full_path_len = parent->full_path_utf8_len; + parent_full_path = parent->full_path; + parent_full_path_nbytes = parent->full_path_nbytes; } - full_path_len = parent_full_path_len + 1 + - dentry->file_name_utf8_len; - full_path = MALLOC(full_path_len + 1); + /* Append this dentry's name as a tchar string to the full path + * of the parent followed by the path separator */ + #if TCHAR_IS_UTF16LE + filename_nbytes = dentry->file_name_nbytes; + #else + { + int ret = utf16le_to_tstr_nbytes(dentry->file_name, + dentry->file_name_nbytes, + &filename_nbytes); + if (ret) + return ret; + } + #endif + + full_path_nbytes = parent_full_path_nbytes + sizeof(tchar) + + filename_nbytes; + full_path = MALLOC(full_path_nbytes + sizeof(tchar)); if (!full_path) - goto oom; - - memcpy(full_path, parent_full_path, parent_full_path_len); - full_path[parent_full_path_len] = '/'; - memcpy(full_path + parent_full_path_len + 1, - dentry->file_name_utf8, - dentry->file_name_utf8_len); - full_path[full_path_len] = '\0'; + return WIMLIB_ERR_NOMEM; + memcpy(full_path, parent_full_path, parent_full_path_nbytes); + full_path[parent_full_path_nbytes / sizeof(tchar)] = T('/'); + #if TCHAR_IS_UTF16LE + memcpy(&full_path[parent_full_path_nbytes / sizeof(tchar) + 1], + dentry->file_name, + filename_nbytes + sizeof(tchar)); + #else + utf16le_to_tstr_buf(dentry->file_name, + dentry->file_name_nbytes, + &full_path[parent_full_path_nbytes / + sizeof(tchar) + 1]); + #endif } - FREE(dentry->full_path_utf8); - dentry->full_path_utf8 = full_path; - dentry->full_path_utf8_len = full_path_len; + FREE(dentry->full_path); + dentry->full_path = full_path; + dentry->full_path_nbytes= full_path_nbytes; + return 0; +} + +static int +increment_subdir_offset(struct wim_dentry *dentry, void *subdir_offset_p) +{ + *(u64*)subdir_offset_p += dentry_correct_total_length(dentry); + return 0; +} + +static int +call_calculate_subdir_offsets(struct wim_dentry *dentry, void *subdir_offset_p) +{ + calculate_subdir_offsets(dentry, subdir_offset_p); return 0; -oom: - ERROR("Out of memory while calculating dentry full path"); - return WIMLIB_ERR_NOMEM; } /* @@ -363,31 +363,24 @@ oom: * @subdir_offset_p: The current subdirectory offset; i.e., the subdirectory * offset for @dentry. */ -void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p) +void +calculate_subdir_offsets(struct wim_dentry *dentry, u64 *subdir_offset_p) { - struct dentry *child, *children; + struct rb_node *node; - children = dentry->d_inode->children; - child = children; dentry->subdir_offset = *subdir_offset_p; - - if (child) { + node = dentry->d_inode->i_children.rb_node; + if (node) { /* Advance the subdir offset by the amount of space the children * of this dentry take up. */ - do { - *subdir_offset_p += dentry_correct_total_length(child); - child = child->next; - } while (child != children); + for_dentry_in_rbtree(node, increment_subdir_offset, subdir_offset_p); /* End-of-directory dentry on disk. */ *subdir_offset_p += 8; /* Recursively call calculate_subdir_offsets() on all the * children. */ - do { - calculate_subdir_offsets(child, subdir_offset_p); - child = child->next; - } while (child != children); + for_dentry_in_rbtree(node, call_calculate_subdir_offsets, subdir_offset_p); } else { /* On disk, childless directories have a valid subdir_offset * that points to an 8-byte end-of-directory dentry. Regular @@ -399,89 +392,177 @@ void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p) } } -/* Returns the child of @dentry that has the file name @name. - * Returns NULL if no child has the name. */ -struct dentry *get_dentry_child_with_name(const struct dentry *dentry, - const char *name) +static int +compare_utf16le_names(const utf16lechar *name1, size_t nbytes1, + const utf16lechar *name2, size_t nbytes2) { - struct dentry *child; - size_t name_len; + int result = memcmp(name1, name2, min(nbytes1, nbytes2)); + if (result) + return result; + else + return (int)nbytes1 - (int)nbytes2; +} - child = dentry->d_inode->children; - if (child) { - name_len = strlen(name); - do { - if (dentry_has_name(child, name, name_len)) - return child; - child = child->next; - } while (child != dentry->d_inode->children); +static int +dentry_compare_names(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); +} + + +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 wim_dentry *child; + while (node) { + child = rbnode_dentry(node); + int result = compare_utf16le_names(name, name_nbytes, + child->file_name, + child->file_name_nbytes); + if (result < 0) + node = node->rb_left; + else if (result > 0) + node = node->rb_right; + else + return child; } return NULL; } -/* Retrieves the dentry that has the UTF-8 @path relative to the dentry - * @cur_dir. Returns NULL if no dentry having the path is found. */ -static struct dentry *get_dentry_relative_path(struct dentry *cur_dir, - const char *path) +/* Returns the child of @dentry that has the file name @name. Returns NULL if + * no child has the name. */ +struct wim_dentry * +get_dentry_child_with_name(const struct wim_dentry *dentry, const tchar *name) { - struct dentry *child; - size_t base_len; - const char *new_path; +#if TCHAR_IS_UTF16LE + return get_dentry_child_with_utf16le_name(dentry, name, + tstrlen(name) * sizeof(tchar)); +#else + utf16lechar *utf16le_name; + size_t utf16le_name_nbytes; + int ret; + struct wim_dentry *child; + + ret = tstr_to_utf16le(name, tstrlen(name) * sizeof(tchar), + &utf16le_name, &utf16le_name_nbytes); + if (ret) { + child = NULL; + } else { + child = get_dentry_child_with_utf16le_name(dentry, + utf16le_name, + utf16le_name_nbytes); + FREE(utf16le_name); + } + return child; +#endif +} - if (*path == '\0') - return cur_dir; +static struct wim_dentry * +get_dentry_utf16le(WIMStruct *w, const utf16lechar *path, + size_t path_nbytes) +{ + struct wim_dentry *cur_dentry, *parent_dentry; + const utf16lechar *p, *pp; - child = cur_dir->d_inode->children; - if (child) { - new_path = path_next_part(path, &base_len); - do { - if (dentry_has_name(child, path, base_len)) - return get_dentry_relative_path(child, new_path); - child = child->next; - } while (child != cur_dir->d_inode->children); + cur_dentry = parent_dentry = wim_root_dentry(w); + p = path; + while (1) { + while (*p == cpu_to_le16('/')) + p++; + if (*p == '\0') + break; + pp = p; + while (*pp != cpu_to_le16('/') && *pp != cpu_to_le16('\0')) + pp++; + + cur_dentry = get_dentry_child_with_utf16le_name(parent_dentry, p, + (void*)pp - (void*)p); + if (cur_dentry == NULL) + break; + p = pp; + parent_dentry = cur_dentry; } - return NULL; + if (cur_dentry == NULL) { + if (dentry_is_directory(parent_dentry)) + errno = ENOENT; + else + errno = ENOTDIR; + } + return cur_dentry; } -/* Returns the dentry corresponding to the UTF-8 @path, or NULL if there is no - * such dentry. */ -struct dentry *get_dentry(WIMStruct *w, const char *path) +/* Returns the dentry corresponding to the @path, or NULL if there is no such + * dentry. */ +struct wim_dentry * +get_dentry(WIMStruct *w, const tchar *path) { - struct dentry *root = wim_root_dentry(w); - while (*path == '/') - path++; - return get_dentry_relative_path(root, path); +#if TCHAR_IS_UTF16LE + return get_dentry_utf16le(w, path, tstrlen(path) * sizeof(tchar)); +#else + utf16lechar *path_utf16le; + size_t path_utf16le_nbytes; + int ret; + struct wim_dentry *dentry; + + ret = tstr_to_utf16le(path, tstrlen(path) * sizeof(tchar), + &path_utf16le, &path_utf16le_nbytes); + if (ret) + return NULL; + dentry = get_dentry_utf16le(w, path_utf16le, path_utf16le_nbytes); + FREE(path_utf16le); + return dentry; +#endif } -struct inode *wim_pathname_to_inode(WIMStruct *w, const char *path) +struct wim_inode * +wim_pathname_to_inode(WIMStruct *w, const tchar *path) { - struct dentry *dentry; + struct wim_dentry *dentry; dentry = get_dentry(w, path); - if (!dentry) - return NULL; - else + if (dentry) return dentry->d_inode; + else + return NULL; +} + +/* Takes in a path of length @len in @buf, and transforms it into a string for + * the path of its parent directory. */ +static void +to_parent_name(tchar *buf, size_t len) +{ + ssize_t i = (ssize_t)len - 1; + while (i >= 0 && buf[i] == T('/')) + i--; + while (i >= 0 && buf[i] != T('/')) + i--; + while (i >= 0 && buf[i] == T('/')) + i--; + buf[i + 1] = T('\0'); } /* Returns the dentry that corresponds to the parent directory of @path, or NULL * if the dentry is not found. */ -struct dentry *get_parent_dentry(WIMStruct *w, const char *path) +struct wim_dentry * +get_parent_dentry(WIMStruct *w, const tchar *path) { - size_t path_len = strlen(path); - char buf[path_len + 1]; - - memcpy(buf, path, path_len + 1); + size_t path_len = tstrlen(path); + tchar buf[path_len + 1]; + tmemcpy(buf, path, path_len + 1); to_parent_name(buf, path_len); - return get_dentry(w, buf); } /* Prints the full path of a dentry. */ -int print_dentry_full_path(struct dentry *dentry, void *ignore) +int +print_dentry_full_path(struct wim_dentry *dentry, void *ignore) { - if (dentry->full_path_utf8) - puts(dentry->full_path_utf8); + if (dentry->full_path) + tprintf(T("%"TS"\n"), dentry->full_path); return 0; } @@ -489,244 +570,260 @@ int print_dentry_full_path(struct dentry *dentry, void *ignore) * set. */ struct file_attr_flag { u32 flag; - const char *name; + const tchar *name; }; struct file_attr_flag file_attr_flags[] = { - {FILE_ATTRIBUTE_READONLY, "READONLY"}, - {FILE_ATTRIBUTE_HIDDEN, "HIDDEN"}, - {FILE_ATTRIBUTE_SYSTEM, "SYSTEM"}, - {FILE_ATTRIBUTE_DIRECTORY, "DIRECTORY"}, - {FILE_ATTRIBUTE_ARCHIVE, "ARCHIVE"}, - {FILE_ATTRIBUTE_DEVICE, "DEVICE"}, - {FILE_ATTRIBUTE_NORMAL, "NORMAL"}, - {FILE_ATTRIBUTE_TEMPORARY, "TEMPORARY"}, - {FILE_ATTRIBUTE_SPARSE_FILE, "SPARSE_FILE"}, - {FILE_ATTRIBUTE_REPARSE_POINT, "REPARSE_POINT"}, - {FILE_ATTRIBUTE_COMPRESSED, "COMPRESSED"}, - {FILE_ATTRIBUTE_OFFLINE, "OFFLINE"}, - {FILE_ATTRIBUTE_NOT_CONTENT_INDEXED,"NOT_CONTENT_INDEXED"}, - {FILE_ATTRIBUTE_ENCRYPTED, "ENCRYPTED"}, - {FILE_ATTRIBUTE_VIRTUAL, "VIRTUAL"}, + {FILE_ATTRIBUTE_READONLY, T("READONLY")}, + {FILE_ATTRIBUTE_HIDDEN, T("HIDDEN")}, + {FILE_ATTRIBUTE_SYSTEM, T("SYSTEM")}, + {FILE_ATTRIBUTE_DIRECTORY, T("DIRECTORY")}, + {FILE_ATTRIBUTE_ARCHIVE, T("ARCHIVE")}, + {FILE_ATTRIBUTE_DEVICE, T("DEVICE")}, + {FILE_ATTRIBUTE_NORMAL, T("NORMAL")}, + {FILE_ATTRIBUTE_TEMPORARY, T("TEMPORARY")}, + {FILE_ATTRIBUTE_SPARSE_FILE, T("SPARSE_FILE")}, + {FILE_ATTRIBUTE_REPARSE_POINT, T("REPARSE_POINT")}, + {FILE_ATTRIBUTE_COMPRESSED, T("COMPRESSED")}, + {FILE_ATTRIBUTE_OFFLINE, T("OFFLINE")}, + {FILE_ATTRIBUTE_NOT_CONTENT_INDEXED,T("NOT_CONTENT_INDEXED")}, + {FILE_ATTRIBUTE_ENCRYPTED, T("ENCRYPTED")}, + {FILE_ATTRIBUTE_VIRTUAL, T("VIRTUAL")}, }; /* Prints a directory entry. @lookup_table is a pointer to the lookup table, if * available. If the dentry is unresolved and the lookup table is NULL, the * lookup table entries will not be printed. Otherwise, they will be. */ -int print_dentry(struct dentry *dentry, void *lookup_table) +int +print_dentry(struct wim_dentry *dentry, void *lookup_table) { const u8 *hash; - struct lookup_table_entry *lte; - const struct inode *inode = dentry->d_inode; - time_t time; - char *p; - - printf("[DENTRY]\n"); - printf("Length = %"PRIu64"\n", dentry->length); - printf("Attributes = 0x%x\n", inode->attributes); - for (unsigned i = 0; i < ARRAY_LEN(file_attr_flags); i++) - if (file_attr_flags[i].flag & inode->attributes) - printf(" FILE_ATTRIBUTE_%s is set\n", + struct wim_lookup_table_entry *lte; + const struct wim_inode *inode = dentry->d_inode; + tchar buf[50]; + + tprintf(T("[DENTRY]\n")); + tprintf(T("Length = %"PRIu64"\n"), dentry->length); + tprintf(T("Attributes = 0x%x\n"), inode->i_attributes); + for (size_t i = 0; i < ARRAY_LEN(file_attr_flags); i++) + if (file_attr_flags[i].flag & inode->i_attributes) + tprintf(T(" FILE_ATTRIBUTE_%"TS" is set\n"), file_attr_flags[i].name); - printf("Security ID = %d\n", inode->security_id); - printf("Subdir offset = %"PRIu64"\n", dentry->subdir_offset); - - /* Translate the timestamps into something readable */ - time = wim_timestamp_to_unix(inode->creation_time); - p = asctime(gmtime(&time)); - *(strrchr(p, '\n')) = '\0'; - printf("Creation Time = %s UTC\n", p); - - time = wim_timestamp_to_unix(inode->last_access_time); - p = asctime(gmtime(&time)); - *(strrchr(p, '\n')) = '\0'; - printf("Last Access Time = %s UTC\n", p); - - time = wim_timestamp_to_unix(inode->last_write_time); - p = asctime(gmtime(&time)); - *(strrchr(p, '\n')) = '\0'; - printf("Last Write Time = %s UTC\n", p); - - printf("Reparse Tag = 0x%"PRIx32"\n", inode->reparse_tag); - printf("Hard Link Group = 0x%"PRIx64"\n", inode->ino); - printf("Hard Link Group Size = %"PRIu32"\n", inode->link_count); - printf("Number of Alternate Data Streams = %hu\n", inode->num_ads); - printf("Filename = \""); - print_string(dentry->file_name, dentry->file_name_len); - puts("\""); - printf("Filename Length = %hu\n", dentry->file_name_len); - printf("Filename (UTF-8) = \"%s\"\n", dentry->file_name_utf8); - printf("Filename (UTF-8) Length = %hu\n", dentry->file_name_utf8_len); - printf("Short Name = \""); - print_string(dentry->short_name, dentry->short_name_len); - puts("\""); - printf("Short Name Length = %hu\n", dentry->short_name_len); - printf("Full Path (UTF-8) = \"%s\"\n", dentry->full_path_utf8); + tprintf(T("Security ID = %d\n"), inode->i_security_id); + tprintf(T("Subdir offset = %"PRIu64"\n"), dentry->subdir_offset); + + wim_timestamp_to_str(inode->i_creation_time, buf, sizeof(buf)); + tprintf(T("Creation Time = %"TS"\n"), buf); + + wim_timestamp_to_str(inode->i_last_access_time, buf, sizeof(buf)); + tprintf(T("Last Access Time = %"TS"\n"), buf); + + wim_timestamp_to_str(inode->i_last_write_time, buf, sizeof(buf)); + tprintf(T("Last Write Time = %"TS"\n"), buf); + + tprintf(T("Reparse Tag = 0x%"PRIx32"\n"), inode->i_reparse_tag); + tprintf(T("Hard Link Group = 0x%"PRIx64"\n"), inode->i_ino); + tprintf(T("Hard Link Group Size = %"PRIu32"\n"), inode->i_nlink); + tprintf(T("Number of Alternate Data Streams = %hu\n"), inode->i_num_ads); + if (dentry_has_long_name(dentry)) + wimlib_printf(T("Filename = \"%"WS"\"\n"), dentry->file_name); + if (dentry_has_short_name(dentry)) + wimlib_printf(T("Short Name \"%"WS"\"\n"), dentry->short_name); + if (dentry->full_path) + tprintf(T("Full Path = \"%"TS"\"\n"), dentry->full_path); + lte = inode_stream_lte(dentry->d_inode, 0, lookup_table); if (lte) { - print_lookup_table_entry(lte); + print_lookup_table_entry(lte, stdout); } else { hash = inode_stream_hash(inode, 0); if (hash) { - printf("Hash = 0x"); + tprintf(T("Hash = 0x")); print_hash(hash); - putchar('\n'); - putchar('\n'); + tputchar(T('\n')); + tputchar(T('\n')); } } - for (u16 i = 0; i < inode->num_ads; i++) { - printf("[Alternate Stream Entry %u]\n", i); - printf("Name = \"%s\"\n", inode->ads_entries[i].stream_name_utf8); - printf("Name Length (UTF-16) = %u\n", - inode->ads_entries[i].stream_name_len); + for (u16 i = 0; i < inode->i_num_ads; i++) { + tprintf(T("[Alternate Stream Entry %u]\n"), i); + wimlib_printf(T("Name = \"%"WS"\"\n"), + inode->i_ads_entries[i].stream_name); + tprintf(T("Name Length (UTF16 bytes) = %hu\n"), + inode->i_ads_entries[i].stream_name_nbytes); hash = inode_stream_hash(inode, i + 1); if (hash) { - printf("Hash = 0x"); + tprintf(T("Hash = 0x")); print_hash(hash); - putchar('\n'); + tputchar(T('\n')); } - print_lookup_table_entry(inode_stream_lte(inode, i + 1, - lookup_table)); + print_lookup_table_entry(inode_stream_lte(inode, i + 1, lookup_table), + stdout); } return 0; } -/* Initializations done on every `struct dentry'. */ -static void dentry_common_init(struct dentry *dentry) +/* Initializations done on every `struct wim_dentry'. */ +static void +dentry_common_init(struct wim_dentry *dentry) { - memset(dentry, 0, sizeof(struct dentry)); + memset(dentry, 0, sizeof(struct wim_dentry)); dentry->refcnt = 1; } -static struct inode *new_timeless_inode() +static struct wim_inode * +new_timeless_inode() { - struct inode *inode = CALLOC(1, sizeof(struct inode)); + struct wim_inode *inode = CALLOC(1, sizeof(struct wim_inode)); if (inode) { - inode->security_id = -1; - inode->link_count = 1; + inode->i_security_id = -1; + inode->i_nlink = 1; #ifdef WITH_FUSE - inode->next_stream_id = 1; + inode->i_next_stream_id = 1; + if (pthread_mutex_init(&inode->i_mutex, NULL) != 0) { + ERROR_WITH_ERRNO("Error initializing mutex"); + FREE(inode); + return NULL; + } #endif - INIT_LIST_HEAD(&inode->dentry_list); + INIT_LIST_HEAD(&inode->i_dentry); } return inode; } -static struct inode *new_inode() +static struct wim_inode * +new_inode() { - struct inode *inode = new_timeless_inode(); + struct wim_inode *inode = new_timeless_inode(); if (inode) { u64 now = get_wim_timestamp(); - inode->creation_time = now; - inode->last_access_time = now; - inode->last_write_time = now; + inode->i_creation_time = now; + inode->i_last_access_time = now; + inode->i_last_write_time = now; } return inode; } -/* - * Creates an unlinked directory entry. - * - * @name: The UTF-8 filename of the new dentry. - * - * Returns a pointer to the new dentry, or NULL if out of memory. - */ -struct dentry *new_dentry(const char *name) +/* Creates an unlinked directory entry. */ +int +new_dentry(const tchar *name, struct wim_dentry **dentry_ret) { - struct dentry *dentry; + struct wim_dentry *dentry; + int ret; - dentry = MALLOC(sizeof(struct dentry)); + dentry = MALLOC(sizeof(struct wim_dentry)); if (!dentry) - goto err; + return WIMLIB_ERR_NOMEM; dentry_common_init(dentry); - if (change_dentry_name(dentry, name) != 0) - goto err; - - dentry->next = dentry; - dentry->prev = dentry; - dentry->parent = dentry; - - return dentry; -err: - FREE(dentry); - ERROR("Failed to allocate new dentry"); - return NULL; + ret = set_dentry_name(dentry, name); + if (ret == 0) { + dentry->parent = dentry; + *dentry_ret = dentry; + } else { + FREE(dentry); + ERROR("Failed to set name on new dentry with name \"%"TS"\"", + name); + } + return ret; } -static struct dentry *__new_dentry_with_inode(const char *name, bool timeless) +static int +__new_dentry_with_inode(const tchar *name, struct wim_dentry **dentry_ret, + bool timeless) { - struct dentry *dentry; - dentry = new_dentry(name); - if (dentry) { - if (timeless) - dentry->d_inode = new_timeless_inode(); - else - dentry->d_inode = new_inode(); - if (dentry->d_inode) { - inode_add_dentry(dentry, dentry->d_inode); - } else { - free_dentry(dentry); - dentry = NULL; - } + struct wim_dentry *dentry; + int ret; + + ret = new_dentry(name, &dentry); + if (ret) + return ret; + + if (timeless) + dentry->d_inode = new_timeless_inode(); + else + dentry->d_inode = new_inode(); + if (!dentry->d_inode) { + free_dentry(dentry); + return WIMLIB_ERR_NOMEM; } - return dentry; + + inode_add_dentry(dentry, dentry->d_inode); + *dentry_ret = dentry; + return 0; } -struct dentry *new_dentry_with_timeless_inode(const char *name) +int +new_dentry_with_timeless_inode(const tchar *name, struct wim_dentry **dentry_ret) { - return __new_dentry_with_inode(name, true); + return __new_dentry_with_inode(name, dentry_ret, true); } -struct dentry *new_dentry_with_inode(const char *name) +int +new_dentry_with_inode(const tchar *name, struct wim_dentry **dentry_ret) { - return __new_dentry_with_inode(name, false); + return __new_dentry_with_inode(name, dentry_ret, false); } -static int init_ads_entry(struct ads_entry *ads_entry, const char *name) +static int +init_ads_entry(struct wim_ads_entry *ads_entry, const void *name, + size_t name_nbytes, bool is_utf16le) { int ret = 0; memset(ads_entry, 0, sizeof(*ads_entry)); - if (name && *name) - ret = change_ads_name(ads_entry, name); + + if (is_utf16le) { + utf16lechar *p = MALLOC(name_nbytes + sizeof(utf16lechar)); + if (!p) + return WIMLIB_ERR_NOMEM; + memcpy(p, name, name_nbytes); + p[name_nbytes / 2] = 0; + ads_entry->stream_name = p; + ads_entry->stream_name_nbytes = name_nbytes; + } else { + if (name && *(const tchar*)name != T('\0')) { + ret = get_utf16le_name(name, &ads_entry->stream_name, + &ads_entry->stream_name_nbytes); + } + } return ret; } -static void destroy_ads_entry(struct ads_entry *ads_entry) +static void +destroy_ads_entry(struct wim_ads_entry *ads_entry) { FREE(ads_entry->stream_name); - FREE(ads_entry->stream_name_utf8); } - /* Frees an inode. */ -void free_inode(struct inode *inode) +void free_inode(struct wim_inode *inode) { if (inode) { - if (inode->ads_entries) { - for (u16 i = 0; i < inode->num_ads; i++) - destroy_ads_entry(&inode->ads_entries[i]); - FREE(inode->ads_entries); + if (inode->i_ads_entries) { + for (u16 i = 0; i < inode->i_num_ads; i++) + destroy_ads_entry(&inode->i_ads_entries[i]); + FREE(inode->i_ads_entries); } #ifdef WITH_FUSE - wimlib_assert(inode->num_opened_fds == 0); - FREE(inode->fds); + wimlib_assert(inode->i_num_opened_fds == 0); + FREE(inode->i_fds); + pthread_mutex_destroy(&inode->i_mutex); + if (inode->i_hlist.pprev) + hlist_del(&inode->i_hlist); #endif - FREE(inode->extracted_file); + FREE(inode->i_extracted_file); FREE(inode); } } /* Decrements link count on an inode and frees it if the link count reaches 0. * */ -static void put_inode(struct inode *inode) +static void put_inode(struct wim_inode *inode) { - wimlib_assert(inode); - wimlib_assert(inode->link_count); - if (--inode->link_count == 0) { + wimlib_assert(inode->i_nlink != 0); + if (--inode->i_nlink == 0) { #ifdef WITH_FUSE - if (inode->num_opened_fds == 0) + if (inode->i_num_opened_fds == 0) #endif { free_inode(inode); @@ -736,45 +833,38 @@ static void put_inode(struct inode *inode) /* Frees a WIM dentry. * - * The inode is freed only if its link count is decremented to 0. + * The corresponding inode (if any) is freed only if its link count is + * decremented to 0. */ -void free_dentry(struct dentry *dentry) +void free_dentry(struct wim_dentry *dentry) { - wimlib_assert(dentry); - struct inode *inode; - FREE(dentry->file_name); - FREE(dentry->file_name_utf8); FREE(dentry->short_name); - FREE(dentry->full_path_utf8); + FREE(dentry->full_path); if (dentry->d_inode) put_inode(dentry->d_inode); FREE(dentry); } -void put_dentry(struct dentry *dentry) +void put_dentry(struct wim_dentry *dentry) { - wimlib_assert(dentry); - wimlib_assert(dentry->refcnt); - + wimlib_assert(dentry->refcnt != 0); if (--dentry->refcnt == 0) free_dentry(dentry); } -/* - * This function is passed as an argument to for_dentry_in_tree_depth() in order - * to free a directory tree. __args is a pointer to a `struct free_dentry_args'. - */ -static int do_free_dentry(struct dentry *dentry, void *__lookup_table) +/* This function is passed as an argument to for_dentry_in_tree_depth() in order + * to free a directory tree. */ +static int do_free_dentry(struct wim_dentry *dentry, void *__lookup_table) { - struct lookup_table *lookup_table = __lookup_table; + struct wim_lookup_table *lookup_table = __lookup_table; unsigned i; if (lookup_table) { - struct lookup_table_entry *lte; - struct inode *inode = dentry->d_inode; - wimlib_assert(inode->link_count); - for (i = 0; i <= inode->num_ads; i++) { + struct wim_lookup_table_entry *lte; + struct wim_inode *inode = dentry->d_inode; + wimlib_assert(inode->i_nlink != 0); + for (i = 0; i <= inode->i_num_ads; i++) { lte = inode_stream_lte(inode, i, lookup_table); if (lte) lte_decrement_refcnt(lte, lookup_table); @@ -794,14 +884,13 @@ static int do_free_dentry(struct dentry *dentry, void *__lookup_table) * table entries corresponding to the dentries will be * decremented. */ -void free_dentry_tree(struct dentry *root, struct lookup_table *lookup_table) +void free_dentry_tree(struct wim_dentry *root, struct wim_lookup_table *lookup_table) { - if (!root || !root->parent) - return; - for_dentry_in_tree_depth(root, do_free_dentry, lookup_table); + if (root) + for_dentry_in_tree_depth(root, do_free_dentry, lookup_table); } -int increment_dentry_refcnt(struct dentry *dentry, void *ignore) +int increment_dentry_refcnt(struct wim_dentry *dentry, void *ignore) { dentry->refcnt++; return 0; @@ -810,266 +899,216 @@ int increment_dentry_refcnt(struct dentry *dentry, void *ignore) /* * Links a dentry into the directory tree. * - * @dentry: The dentry to link. * @parent: The dentry that will be the parent of @dentry. + * @dentry: The dentry to link. */ -void link_dentry(struct dentry *dentry, struct dentry *parent) +bool +dentry_add_child(struct wim_dentry * restrict parent, + struct wim_dentry * restrict child) { wimlib_assert(dentry_is_directory(parent)); - dentry->parent = parent; - if (parent->d_inode->children) { - /* Not an only child; link to siblings. */ - dentry->next = parent->d_inode->children; - dentry->prev = parent->d_inode->children->prev; - dentry->next->prev = dentry; - dentry->prev->next = dentry; - } else { - /* Only child; link to parent. */ - parent->d_inode->children = dentry; - dentry->next = dentry; - dentry->prev = dentry; - } -} + struct rb_root *root = &parent->d_inode->i_children; + struct rb_node **new = &(root->rb_node); + struct rb_node *rb_parent = NULL; -#ifdef WITH_FUSE -/* - * Unlink a dentry from the directory tree. - * - * Note: This merely removes it from the in-memory tree structure. - */ -void unlink_dentry(struct dentry *dentry) -{ - if (dentry_is_root(dentry)) - return; - if (dentry_is_only_child(dentry)) { - dentry->parent->d_inode->children = NULL; - } else { - if (dentry_is_first_sibling(dentry)) - dentry->parent->d_inode->children = dentry->next; - dentry->next->prev = dentry->prev; - dentry->prev->next = dentry->next; - } -} -#endif - -static inline struct dentry *inode_first_dentry(struct inode *inode) -{ - wimlib_assert(inode->dentry_list.next != &inode->dentry_list); - return container_of(inode->dentry_list.next, struct dentry, - inode_dentry_list); -} - -static int verify_inode(struct inode *inode, const WIMStruct *w) -{ - const struct lookup_table *table = w->lookup_table; - const struct wim_security_data *sd = wim_const_security_data(w); - const struct dentry *first_dentry = inode_first_dentry(inode); - int ret = WIMLIB_ERR_INVALID_DENTRY; + while (*new) { + struct wim_dentry *this = rbnode_dentry(*new); + int result = dentry_compare_names(child, this); - /* Check the security ID */ - if (inode->security_id < -1) { - ERROR("Dentry `%s' has an invalid security ID (%d)", - first_dentry->full_path_utf8, inode->security_id); - goto out; - } - if (inode->security_id >= sd->num_entries) { - ERROR("Dentry `%s' has an invalid security ID (%d) " - "(there are only %u entries in the security table)", - first_dentry->full_path_utf8, inode->security_id, - sd->num_entries); - goto out; - } + rb_parent = *new; - /* Check that lookup table entries for all the resources exist, except - * if the SHA1 message digest is all 0's, which indicates there is - * intentionally no resource there. */ - if (w->hdr.total_parts == 1) { - for (unsigned i = 0; i <= inode->num_ads; i++) { - struct lookup_table_entry *lte; - const u8 *hash; - hash = inode_stream_hash_unresolved(inode, i); - lte = __lookup_resource(table, hash); - if (!lte && !is_zero_hash(hash)) { - ERROR("Could not find lookup table entry for stream " - "%u of dentry `%s'", i, first_dentry->full_path_utf8); - goto out; - } - if (lte && (lte->real_refcnt += inode->link_count) > lte->refcnt) - { - #ifdef ENABLE_ERROR_MESSAGES - WARNING("The following lookup table entry " - "has a reference count of %u, but", - lte->refcnt); - WARNING("We found %zu references to it", - lte->real_refcnt); - WARNING("(One dentry referencing it is at `%s')", - first_dentry->full_path_utf8); - - print_lookup_table_entry(lte); - #endif - /* Guess what! install.wim for Windows 8 - * contains a stream with 2 dentries referencing - * it, but the lookup table entry has reference - * count of 1. So we will need to handle this - * case and not just make it be an error... I'm - * just setting the reference count to the - * number of references we found. - * (Unfortunately, even after doing this, the - * reference count could be too low if it's also - * referenced in other WIM images) */ - - #if 1 - lte->refcnt = lte->real_refcnt; - WARNING("Fixing reference count"); - #else - goto out; - #endif - } - } + if (result < 0) + new = &((*new)->rb_left); + else if (result > 0) + new = &((*new)->rb_right); + else + return false; } + child->parent = parent; + rb_link_node(&child->rb_node, rb_parent, new); + rb_insert_color(&child->rb_node, root); + return true; +} - /* Make sure there is only one un-named stream. */ - unsigned num_unnamed_streams = 0; - for (unsigned i = 0; i <= inode->num_ads; i++) { - const u8 *hash; - hash = inode_stream_hash_unresolved(inode, i); - if (!inode_stream_name_len(inode, i) && !is_zero_hash(hash)) - num_unnamed_streams++; - } - if (num_unnamed_streams > 1) { - ERROR("Dentry `%s' has multiple (%u) un-named streams", - first_dentry->full_path_utf8, num_unnamed_streams); - goto out; - } - inode->verified = true; - ret = 0; -out: - return ret; +/* Unlink a WIM dentry from the directory entry tree. */ +void +unlink_dentry(struct wim_dentry *dentry) +{ + struct wim_dentry *parent = dentry->parent; + if (parent == dentry) + return; + rb_erase(&dentry->rb_node, &parent->d_inode->i_children); } -/* Run some miscellaneous verifications on a WIM dentry */ -int verify_dentry(struct dentry *dentry, void *wim) +/* + * Returns the alternate data stream entry belonging to @inode that has the + * stream name @stream_name. + */ +struct wim_ads_entry * +inode_get_ads_entry(struct wim_inode *inode, const tchar *stream_name, + u16 *idx_ret) { - const WIMStruct *w = wim; - const struct inode *inode = dentry->d_inode; - int ret = WIMLIB_ERR_INVALID_DENTRY; + if (inode->i_num_ads == 0) { + return NULL; + } else { + size_t stream_name_utf16le_nbytes; + u16 i; + struct wim_ads_entry *result; - if (!dentry->d_inode->verified) { - ret = verify_inode(dentry->d_inode, w); - if (ret != 0) - goto out; - } + #if TCHAR_IS_UTF16LE + const utf16lechar *stream_name_utf16le; - /* Cannot have a short name but no long name */ - if (dentry->short_name_len && !dentry->file_name_len) { - ERROR("Dentry `%s' has a short name but no long name", - dentry->full_path_utf8); - goto out; - } + stream_name_utf16le = stream_name; + stream_name_utf16le_nbytes = tstrlen(stream_name) * sizeof(tchar); + #else + utf16lechar *stream_name_utf16le; - /* Make sure root dentry is unnamed */ - if (dentry_is_root(dentry)) { - if (dentry->file_name_len) { - ERROR("The root dentry is named `%s', but it must " - "be unnamed", dentry->file_name_utf8); - goto out; + { + int ret = tstr_to_utf16le(stream_name, + tstrlen(stream_name) * + sizeof(tchar), + &stream_name_utf16le, + &stream_name_utf16le_nbytes); + if (ret) + return NULL; } - } - -#if 0 - /* Check timestamps */ - if (inode->last_access_time < inode->creation_time || - inode->last_write_time < inode->creation_time) { - WARNING("Dentry `%s' was created after it was last accessed or " - "written to", dentry->full_path_utf8); - } -#endif - - ret = 0; -out: - return ret; -} - - -#ifdef WITH_FUSE -/* Returns the alternate data stream entry belonging to @inode that has the - * stream name @stream_name. */ -struct ads_entry *inode_get_ads_entry(struct inode *inode, - const char *stream_name, - u16 *idx_ret) -{ - size_t stream_name_len; - if (!stream_name) - return NULL; - if (inode->num_ads) { - u16 i = 0; - stream_name_len = strlen(stream_name); + #endif + i = 0; + result = NULL; do { - if (ads_entry_has_name(&inode->ads_entries[i], - stream_name, stream_name_len)) + if (ads_entry_has_name(&inode->i_ads_entries[i], + stream_name_utf16le, + stream_name_utf16le_nbytes)) { if (idx_ret) *idx_ret = i; - return &inode->ads_entries[i]; + result = &inode->i_ads_entries[i]; + break; } - } while (++i != inode->num_ads); + } while (++i != inode->i_num_ads); + #if !TCHAR_IS_UTF16LE + FREE(stream_name_utf16le); + #endif + return result; } - return NULL; } -#endif -#if defined(WITH_FUSE) || defined(WITH_NTFS_3G) -/* - * Add an alternate stream entry to an inode and return a pointer to it, or NULL - * if memory could not be allocated. - */ -struct ads_entry *inode_add_ads(struct inode *inode, const char *stream_name) +static struct wim_ads_entry * +do_inode_add_ads(struct wim_inode *inode, const void *stream_name, + size_t stream_name_nbytes, bool is_utf16le) { u16 num_ads; - struct ads_entry *ads_entries; - struct ads_entry *new_entry; - - DEBUG("Add alternate data stream \"%s\"", stream_name); + struct wim_ads_entry *ads_entries; + struct wim_ads_entry *new_entry; - if (inode->num_ads >= 0xfffe) { + if (inode->i_num_ads >= 0xfffe) { ERROR("Too many alternate data streams in one inode!"); return NULL; } - num_ads = inode->num_ads + 1; - ads_entries = REALLOC(inode->ads_entries, - num_ads * sizeof(inode->ads_entries[0])); + num_ads = inode->i_num_ads + 1; + ads_entries = REALLOC(inode->i_ads_entries, + num_ads * sizeof(inode->i_ads_entries[0])); if (!ads_entries) { ERROR("Failed to allocate memory for new alternate data stream"); return NULL; } - inode->ads_entries = ads_entries; + inode->i_ads_entries = ads_entries; - new_entry = &inode->ads_entries[num_ads - 1]; - if (init_ads_entry(new_entry, stream_name) != 0) + new_entry = &inode->i_ads_entries[num_ads - 1]; + if (init_ads_entry(new_entry, stream_name, stream_name_nbytes, is_utf16le)) return NULL; #ifdef WITH_FUSE - new_entry->stream_id = inode->next_stream_id++; + new_entry->stream_id = inode->i_next_stream_id++; #endif - inode->num_ads = num_ads; + inode->i_num_ads = num_ads; return new_entry; } -#endif -#ifdef WITH_FUSE -/* Remove an alternate data stream from the inode */ -void inode_remove_ads(struct inode *inode, u16 idx, - struct lookup_table *lookup_table) +struct wim_ads_entry * +inode_add_ads_utf16le(struct wim_inode *inode, + const utf16lechar *stream_name, + size_t stream_name_nbytes) +{ + DEBUG("Add alternate data stream \"%"WS"\"", stream_name); + return do_inode_add_ads(inode, stream_name, stream_name_nbytes, true); +} + +/* + * Add an alternate stream entry to a WIM inode and return a pointer to it, or + * NULL if memory could not be allocated. + */ +struct wim_ads_entry * +inode_add_ads(struct wim_inode *inode, const tchar *stream_name) +{ + DEBUG("Add alternate data stream \"%"TS"\"", stream_name); + return do_inode_add_ads(inode, stream_name, + tstrlen(stream_name) * sizeof(tchar), + TCHAR_IS_UTF16LE); +} + +int +inode_add_ads_with_data(struct wim_inode *inode, const tchar *name, + const void *value, size_t size, + struct wim_lookup_table *lookup_table) +{ + int ret = WIMLIB_ERR_NOMEM; + struct wim_ads_entry *new_ads_entry; + struct wim_lookup_table_entry *existing_lte; + struct wim_lookup_table_entry *lte; + u8 value_hash[SHA1_HASH_SIZE]; + + wimlib_assert(inode->i_resolved); + new_ads_entry = inode_add_ads(inode, name); + if (!new_ads_entry) + goto out; + sha1_buffer((const u8*)value, size, value_hash); + existing_lte = __lookup_resource(lookup_table, value_hash); + if (existing_lte) { + lte = existing_lte; + lte->refcnt++; + } else { + u8 *value_copy; + lte = new_lookup_table_entry(); + if (!lte) + goto out_remove_ads_entry; + value_copy = MALLOC(size); + if (!value_copy) { + FREE(lte); + goto out_remove_ads_entry; + } + memcpy(value_copy, value, size); + lte->resource_location = RESOURCE_IN_ATTACHED_BUFFER; + lte->attached_buffer = value_copy; + lte->resource_entry.original_size = size; + lte->resource_entry.size = size; + copy_hash(lte->hash, value_hash); + lookup_table_insert(lookup_table, lte); + } + new_ads_entry->lte = lte; + ret = 0; + goto out; +out_remove_ads_entry: + inode_remove_ads(inode, new_ads_entry - inode->i_ads_entries, + lookup_table); +out: + return ret; +} + +/* Remove an alternate data stream from a WIM inode */ +void +inode_remove_ads(struct wim_inode *inode, u16 idx, + struct wim_lookup_table *lookup_table) { - struct ads_entry *ads_entry; - struct lookup_table_entry *lte; + struct wim_ads_entry *ads_entry; + struct wim_lookup_table_entry *lte; - wimlib_assert(idx < inode->num_ads); - wimlib_assert(inode->resolved); + wimlib_assert(idx < inode->i_num_ads); + wimlib_assert(inode->i_resolved); - ads_entry = &inode->ads_entries[idx]; + ads_entry = &inode->i_ads_entries[idx]; - DEBUG("Remove alternate data stream \"%s\"", ads_entry->stream_name_utf8); + DEBUG("Remove alternate data stream \"%"WS"\"", ads_entry->stream_name); lte = ads_entry->lte; if (lte) @@ -1077,22 +1116,91 @@ void inode_remove_ads(struct inode *inode, u16 idx, destroy_ads_entry(ads_entry); - memcpy(&inode->ads_entries[idx], - &inode->ads_entries[idx + 1], - (inode->num_ads - idx - 1) * sizeof(inode->ads_entries[0])); - inode->num_ads--; + memmove(&inode->i_ads_entries[idx], + &inode->i_ads_entries[idx + 1], + (inode->i_num_ads - idx - 1) * sizeof(inode->i_ads_entries[0])); + inode->i_num_ads--; } -#endif +#ifndef __WIN32__ +int +inode_get_unix_data(const struct wim_inode *inode, + struct wimlib_unix_data *unix_data, + u16 *stream_idx_ret) +{ + const struct wim_ads_entry *ads_entry; + const struct wim_lookup_table_entry *lte; + size_t size; + int ret; + + wimlib_assert(inode->i_resolved); + + ads_entry = inode_get_ads_entry((struct wim_inode*)inode, + WIMLIB_UNIX_DATA_TAG, NULL); + if (!ads_entry) + return NO_UNIX_DATA; + + if (stream_idx_ret) + *stream_idx_ret = ads_entry - inode->i_ads_entries; + + lte = ads_entry->lte; + if (!lte) + return NO_UNIX_DATA; + + size = wim_resource_size(lte); + if (size != sizeof(struct wimlib_unix_data)) + return BAD_UNIX_DATA; + + ret = read_full_wim_resource(lte, unix_data, 0); + if (ret) + return ret; + + if (unix_data->version != 0) + return BAD_UNIX_DATA; + return 0; +} +int +inode_set_unix_data(struct wim_inode *inode, uid_t uid, gid_t gid, mode_t mode, + struct wim_lookup_table *lookup_table, int which) +{ + struct wimlib_unix_data unix_data; + int ret; + bool have_good_unix_data = false; + bool have_unix_data = false; + u16 stream_idx; + + if (!(which & UNIX_DATA_CREATE)) { + ret = inode_get_unix_data(inode, &unix_data, &stream_idx); + if (ret == 0 || ret == BAD_UNIX_DATA || ret > 0) + have_unix_data = true; + if (ret == 0) + have_good_unix_data = true; + } + unix_data.version = 0; + if (which & UNIX_DATA_UID || !have_good_unix_data) + unix_data.uid = uid; + if (which & UNIX_DATA_GID || !have_good_unix_data) + unix_data.gid = gid; + if (which & UNIX_DATA_MODE || !have_good_unix_data) + unix_data.mode = mode; + ret = inode_add_ads_with_data(inode, WIMLIB_UNIX_DATA_TAG, + &unix_data, + sizeof(struct wimlib_unix_data), + lookup_table); + if (ret == 0 && have_unix_data) + inode_remove_ads(inode, stream_idx, lookup_table); + return ret; +} +#endif /* !__WIN32__ */ /* - * Reads the alternate data stream entries for a dentry. + * Reads the alternate data stream entries of a WIM dentry. * * @p: Pointer to buffer that starts with the first alternate stream entry. * * @inode: Inode to load the alternate data streams into. - * @inode->num_ads must have been set to the number of + * @inode->i_num_ads must have been set to the number of * alternate data streams that are expected. * * @remaining_size: Number of bytes of data remaining in the buffer pointed @@ -1100,7 +1208,7 @@ void inode_remove_ads(struct inode *inode, u16 idx, * * The format of the on-disk alternate stream entries is as follows: * - * struct ads_entry_on_disk { + * struct wim_ads_entry_on_disk { * u64 length; // Length of the entry, in bytes. This includes * all fields (including the stream name and * null terminator if present, AND the padding!). @@ -1122,19 +1230,19 @@ void inode_remove_ads(struct inode *inode, u16 idx, * * In addition, the entries are 8-byte aligned. * - * Return 0 on success or nonzero on failure. On success, inode->ads_entries - * is set to an array of `struct ads_entry's of length inode->num_ads. On + * Return 0 on success or nonzero on failure. On success, inode->i_ads_entries + * is set to an array of `struct wim_ads_entry's of length inode->i_num_ads. On * failure, @inode is not modified. */ -static int read_ads_entries(const u8 *p, struct inode *inode, - u64 remaining_size) +static int +read_ads_entries(const u8 *p, struct wim_inode *inode, u64 remaining_size) { u16 num_ads; - struct ads_entry *ads_entries; + struct wim_ads_entry *ads_entries; int ret; - num_ads = inode->num_ads; - ads_entries = CALLOC(num_ads, sizeof(inode->ads_entries[0])); + num_ads = inode->i_num_ads; + ads_entries = CALLOC(num_ads, sizeof(inode->i_ads_entries[0])); if (!ads_entries) { ERROR("Could not allocate memory for %"PRIu16" " "alternate data stream entries", num_ads); @@ -1142,11 +1250,10 @@ static int read_ads_entries(const u8 *p, struct inode *inode, } for (u16 i = 0; i < num_ads; i++) { - struct ads_entry *cur_entry; + struct wim_ads_entry *cur_entry; u64 length; u64 length_no_padding; u64 total_length; - size_t utf8_len; const u8 *p_save = p; cur_entry = &ads_entries[i]; @@ -1165,16 +1272,15 @@ static int read_ads_entries(const u8 *p, struct inode *inode, p = get_u64(p, &length); p += 8; /* Skip the reserved field */ - p = get_bytes(p, SHA1_HASH_SIZE, (u8*)cur_entry->hash); - p = get_u16(p, &cur_entry->stream_name_len); + p = get_bytes(p, SHA1_HASH_SIZE, cur_entry->hash); + p = get_u16(p, &cur_entry->stream_name_nbytes); cur_entry->stream_name = NULL; - cur_entry->stream_name_utf8 = NULL; /* Length including neither the null terminator nor the padding * */ length_no_padding = WIM_ADS_ENTRY_DISK_SIZE + - cur_entry->stream_name_len; + cur_entry->stream_name_nbytes; /* Length including the null terminator and the padding */ total_length = ((length_no_padding + 2) + 7) & ~7; @@ -1206,23 +1312,15 @@ static int read_ads_entries(const u8 *p, struct inode *inode, goto out_free_ads_entries; } - if (cur_entry->stream_name_len) { - cur_entry->stream_name = MALLOC(cur_entry->stream_name_len); + if (cur_entry->stream_name_nbytes) { + cur_entry->stream_name = MALLOC(cur_entry->stream_name_nbytes + 2); if (!cur_entry->stream_name) { ret = WIMLIB_ERR_NOMEM; goto out_free_ads_entries; } - get_bytes(p, cur_entry->stream_name_len, - (u8*)cur_entry->stream_name); - cur_entry->stream_name_utf8 = utf16_to_utf8(cur_entry->stream_name, - cur_entry->stream_name_len, - &utf8_len); - cur_entry->stream_name_utf8_len = utf8_len; - - if (!cur_entry->stream_name_utf8) { - ret = WIMLIB_ERR_NOMEM; - goto out_free_ads_entries; - } + get_bytes(p, cur_entry->stream_name_nbytes, + cur_entry->stream_name); + cur_entry->stream_name[cur_entry->stream_name_nbytes / 2] = 0; } /* It's expected that the size of every ADS entry is a multiple * of 8. However, to be safe, I'm allowing the possibility of @@ -1238,9 +1336,9 @@ static int read_ads_entries(const u8 *p, struct inode *inode, else remaining_size -= total_length; } - inode->ads_entries = ads_entries; + inode->i_ads_entries = ads_entries; #ifdef WITH_FUSE - inode->next_stream_id = inode->num_ads + 1; + inode->i_next_stream_id = inode->i_num_ads + 1; #endif return 0; out_free_ads_entries: @@ -1251,33 +1349,32 @@ out_free_ads_entries: } /* - * Reads a directory entry, including all alternate data stream entries that + * Reads a WIM directory entry, including all alternate data stream entries that * follow it, from the WIM image's metadata resource. * * @metadata_resource: Buffer containing the uncompressed metadata resource. * @metadata_resource_len: Length of the metadata resource. * @offset: Offset of this directory entry in the metadata resource. - * @dentry: A `struct dentry' that will be filled in by this function. + * @dentry: A `struct wim_dentry' that will be filled in by this function. * - * Return 0 on success or nonzero on failure. On failure, @dentry have been - * modified, bu it will be left with no pointers to any allocated buffers. - * On success, the dentry->length field must be examined. If zero, this was a - * special "end of directory" dentry and not a real dentry. If nonzero, this - * was a real dentry. + * Return 0 on success or nonzero on failure. On failure, @dentry will have + * been modified, but it will not be left with pointers to any allocated + * buffers. On success, the dentry->length field must be examined. If zero, + * this was a special "end of directory" dentry and not a real dentry. If + * nonzero, this was a real dentry. */ -int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, - u64 offset, struct dentry *dentry) +int +read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, + u64 offset, struct wim_dentry *dentry) { const u8 *p; u64 calculated_size; - char *file_name = NULL; - char *file_name_utf8 = NULL; - char *short_name = NULL; - u16 short_name_len; - u16 file_name_len; - size_t file_name_utf8_len = 0; + utf16lechar *file_name = NULL; + utf16lechar *short_name = NULL; + u16 short_name_nbytes; + u16 file_name_nbytes; int ret; - struct inode *inode = NULL; + struct wim_inode *inode = NULL; dentry_common_init(dentry); @@ -1326,8 +1423,8 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, if (!inode) return WIMLIB_ERR_NOMEM; - p = get_u32(p, &inode->attributes); - p = get_u32(p, (u32*)&inode->security_id); + p = get_u32(p, &inode->i_attributes); + p = get_u32(p, (u32*)&inode->i_security_id); p = get_u64(p, &dentry->subdir_offset); /* 2 unused fields */ @@ -1335,11 +1432,11 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, /*p = get_u64(p, &dentry->unused1);*/ /*p = get_u64(p, &dentry->unused2);*/ - p = get_u64(p, &inode->creation_time); - p = get_u64(p, &inode->last_access_time); - p = get_u64(p, &inode->last_write_time); + p = get_u64(p, &inode->i_creation_time); + p = get_u64(p, &inode->i_last_access_time); + p = get_u64(p, &inode->i_last_write_time); - p = get_bytes(p, SHA1_HASH_SIZE, inode->hash); + p = get_bytes(p, SHA1_HASH_SIZE, inode->i_hash); /* * I don't know what's going on here. It seems like M$ screwed up the @@ -1347,23 +1444,23 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, * document it. The WIM_HDR_FLAG_RP_FIX flag in the WIM header might * have something to do with this, but it's not documented. */ - if (inode->attributes & FILE_ATTRIBUTE_REPARSE_POINT) { + if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) { /* ??? */ p += 4; - p = get_u32(p, &inode->reparse_tag); + p = get_u32(p, &inode->i_reparse_tag); p += 4; } else { - p = get_u32(p, &inode->reparse_tag); - p = get_u64(p, &inode->ino); + p = get_u32(p, &inode->i_reparse_tag); + p = get_u64(p, &inode->i_ino); } /* By the way, the reparse_reserved field does not actually exist (at * least when the file is not a reparse point) */ - p = get_u16(p, &inode->num_ads); + p = get_u16(p, &inode->i_num_ads); - p = get_u16(p, &short_name_len); - p = get_u16(p, &file_name_len); + p = get_u16(p, &short_name_nbytes); + p = get_u16(p, &file_name_nbytes); /* We now know the length of the file name and short name. Make sure * the length of the dentry is large enough to actually hold them. @@ -1371,43 +1468,35 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, * The calculated length here is unaligned to allow for the possibility * that the dentry->length names an unaligned length, although this * would be unexpected. */ - calculated_size = __dentry_correct_length_unaligned(file_name_len, - short_name_len); + calculated_size = __dentry_correct_length_unaligned(file_name_nbytes, + short_name_nbytes); if (dentry->length < calculated_size) { ERROR("Unexpected end of directory entry! (Expected " "at least %"PRIu64" bytes, got %"PRIu64" bytes. " - "short_name_len = %hu, file_name_len = %hu)", + "short_name_nbytes = %hu, file_name_nbytes = %hu)", calculated_size, dentry->length, - short_name_len, file_name_len); - return WIMLIB_ERR_INVALID_DENTRY; + short_name_nbytes, file_name_nbytes); + ret = WIMLIB_ERR_INVALID_DENTRY; + goto out_free_inode; } /* Read the filename if present. Note: if the filename is empty, there * is no null terminator following it. */ - if (file_name_len) { - file_name = MALLOC(file_name_len); + if (file_name_nbytes) { + file_name = MALLOC(file_name_nbytes + 2); if (!file_name) { - ERROR("Failed to allocate %hu bytes for dentry file name", - file_name_len); - return WIMLIB_ERR_NOMEM; - } - p = get_bytes(p, file_name_len, file_name); - - /* Convert filename to UTF-8. */ - file_name_utf8 = utf16_to_utf8(file_name, file_name_len, - &file_name_utf8_len); - - if (!file_name_utf8) { - ERROR("Failed to allocate memory to convert UTF-16 " - "filename (%hu bytes) to UTF-8", file_name_len); + ERROR("Failed to allocate %d bytes for dentry file name", + file_name_nbytes + 2); ret = WIMLIB_ERR_NOMEM; - goto out_free_file_name; + goto out_free_inode; + } + p = get_bytes(p, file_name_nbytes + 2, file_name); + if (file_name[file_name_nbytes / 2] != 0) { + file_name[file_name_nbytes / 2] = 0; + WARNING("File name in WIM dentry \"%"WS"\" is not " + "null-terminated!", file_name); } - if (*(u16*)p) - WARNING("Expected two zero bytes following the file name " - "`%s', but found non-zero bytes", file_name_utf8); - p += 2; } /* Align the calculated size */ @@ -1437,27 +1526,27 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, * u64 reserved1; (always 0) * u64 reserved2; (always 0) * };*/ - DEBUG("Dentry for file or directory `%s' has %zu extra " - "bytes of data", - file_name_utf8, dentry->length - calculated_size); + /*DEBUG("Dentry for file or directory `%"WS"' has %"PRIu64" "*/ + /*"extra bytes of data", file_name,*/ + /*dentry->length - calculated_size);*/ } /* Read the short filename if present. Note: if there is no short * filename, there is no null terminator following it. */ - if (short_name_len) { - short_name = MALLOC(short_name_len); + if (short_name_nbytes) { + short_name = MALLOC(short_name_nbytes + 2); if (!short_name) { - ERROR("Failed to allocate %hu bytes for short filename", - short_name_len); + ERROR("Failed to allocate %d bytes for dentry short name", + short_name_nbytes + 2); ret = WIMLIB_ERR_NOMEM; - goto out_free_file_name_utf8; + goto out_free_file_name; + } + p = get_bytes(p, short_name_nbytes + 2, short_name); + if (short_name[short_name_nbytes / 2] != 0) { + short_name[short_name_nbytes / 2] = 0; + WARNING("Short name in WIM dentry \"%"WS"\" is not " + "null-terminated!", file_name); } - - p = get_bytes(p, short_name_len, short_name); - if (*(u16*)p) - WARNING("Expected two zero bytes following the short name of " - "`%s', but found non-zero bytes", file_name_utf8); - p += 2; } /* @@ -1469,7 +1558,7 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, * aligned boundary, and the alternate data stream entries are NOT * included in the dentry->length field for some reason. */ - if (inode->num_ads != 0) { + if (inode->i_num_ads != 0) { /* Trying different lengths is just a hack to make sure we have * a chance of reading the ADS entries correctly despite the @@ -1482,7 +1571,7 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, calculated_size, dentry->length); } u64 lengths_to_try[3] = {calculated_size, - dentry->length + 7 & ~7, + (dentry->length + 7) & ~7, dentry->length}; ret = WIMLIB_ERR_INVALID_DENTRY; for (size_t i = 0; i < ARRAY_LEN(lengths_to_try); i++) { @@ -1495,25 +1584,20 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, goto out; } ERROR("Failed to read alternate data stream " - "entries of `%s'", dentry->file_name_utf8); + "entries of WIM dentry \"%"WS"\"", file_name); goto out_free_short_name; } out: - /* We've read all the data for this dentry. Set the names and their * lengths, and we've done. */ - dentry->d_inode = inode; - dentry->file_name = file_name; - dentry->file_name_utf8 = file_name_utf8; - dentry->short_name = short_name; - dentry->file_name_len = file_name_len; - dentry->file_name_utf8_len = file_name_utf8_len; - dentry->short_name_len = short_name_len; + dentry->d_inode = inode; + dentry->file_name = file_name; + dentry->short_name = short_name; + dentry->file_name_nbytes = file_name_nbytes; + dentry->short_name_nbytes = short_name_nbytes; return 0; out_free_short_name: FREE(short_name); -out_free_file_name_utf8: - FREE(file_name_utf8); out_free_file_name: FREE(file_name); out_free_inode: @@ -1530,21 +1614,20 @@ out_free_inode: * @metadata_resource_len: The length of the uncompressed metadata resource, in * bytes. * - * @dentry: A pointer to a `struct dentry' that is the root of the directory + * @dentry: A pointer to a `struct wim_dentry' that is the root of the directory * tree and has already been read from the metadata resource. It * does not need to be the real root because this procedure is * called recursively. * - * @return: Zero on success, nonzero on failure. + * Returns zero on success; nonzero on failure. */ -int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, - struct dentry *dentry) +int +read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, + struct wim_dentry *dentry) { u64 cur_offset = dentry->subdir_offset; - struct dentry *prev_child = NULL; - struct dentry *first_child = NULL; - struct dentry *child; - struct dentry cur_child; + struct wim_dentry *child; + struct wim_dentry cur_child; int ret; /* @@ -1571,24 +1654,15 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, /* Not end of directory. Allocate this child permanently and * link it to the parent and previous child. */ - child = MALLOC(sizeof(struct dentry)); + child = MALLOC(sizeof(struct wim_dentry)); if (!child) { ERROR("Failed to allocate %zu bytes for new dentry", - sizeof(struct dentry)); + sizeof(struct wim_dentry)); ret = WIMLIB_ERR_NOMEM; break; } - memcpy(child, &cur_child, sizeof(struct dentry)); - - if (prev_child) { - prev_child->next = child; - child->prev = prev_child; - } else { - first_child = child; - } - - child->parent = dentry; - prev_child = child; + memcpy(child, &cur_child, sizeof(struct wim_dentry)); + dentry_add_child(dentry, child); inode_add_dentry(child, child->d_inode); /* If there are children of this child, call this procedure @@ -1607,14 +1681,6 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, * entries. */ cur_offset += dentry_total_length(child); } - - /* Link last child to first one, and set parent's children pointer to - * the first child. */ - if (prev_child) { - prev_child->next = first_child; - first_child->prev = prev_child; - } - dentry->d_inode->children = first_child; return ret; } @@ -1626,11 +1692,12 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, * @return: Pointer to the byte after the last byte we wrote as part of the * dentry. */ -static u8 *write_dentry(const struct dentry *dentry, u8 *p) +static u8 * +write_dentry(const struct wim_dentry *dentry, u8 *p) { u8 *orig_p = p; const u8 *hash; - const struct inode *inode = dentry->d_inode; + const struct wim_inode *inode = dentry->d_inode; /* We calculate the correct length of the dentry ourselves because the * dentry->length field may been set to an unexpected value from when we @@ -1639,39 +1706,39 @@ static u8 *write_dentry(const struct dentry *dentry, u8 *p) u64 length = dentry_correct_length(dentry); p = put_u64(p, length); - p = put_u32(p, inode->attributes); - p = put_u32(p, inode->security_id); + p = put_u32(p, inode->i_attributes); + p = put_u32(p, inode->i_security_id); p = put_u64(p, dentry->subdir_offset); p = put_u64(p, 0); /* unused1 */ p = put_u64(p, 0); /* unused2 */ - p = put_u64(p, inode->creation_time); - p = put_u64(p, inode->last_access_time); - p = put_u64(p, inode->last_write_time); + p = put_u64(p, inode->i_creation_time); + p = put_u64(p, inode->i_last_access_time); + p = put_u64(p, inode->i_last_write_time); hash = inode_stream_hash(inode, 0); p = put_bytes(p, SHA1_HASH_SIZE, hash); - if (inode->attributes & FILE_ATTRIBUTE_REPARSE_POINT) { + if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) { p = put_zeroes(p, 4); - p = put_u32(p, inode->reparse_tag); + p = put_u32(p, inode->i_reparse_tag); p = put_zeroes(p, 4); } else { u64 link_group_id; p = put_u32(p, 0); - if (inode->link_count == 1) + if (inode->i_nlink == 1) link_group_id = 0; else - link_group_id = inode->ino; + link_group_id = inode->i_ino; p = put_u64(p, link_group_id); } - p = put_u16(p, inode->num_ads); - p = put_u16(p, dentry->short_name_len); - p = put_u16(p, dentry->file_name_len); - if (dentry->file_name_len) { - p = put_bytes(p, dentry->file_name_len, (u8*)dentry->file_name); - p = put_u16(p, 0); /* filename padding, 2 bytes. */ + p = put_u16(p, inode->i_num_ads); + p = put_u16(p, dentry->short_name_nbytes); + p = put_u16(p, dentry->file_name_nbytes); + if (dentry_has_long_name(dentry)) { + p = put_bytes(p, dentry->file_name_nbytes + 2, + dentry->file_name); } - if (dentry->short_name) { - p = put_bytes(p, dentry->short_name_len, (u8*)dentry->short_name); - p = put_u16(p, 0); /* short name padding, 2 bytes */ + if (dentry_has_short_name(dentry)) { + p = put_bytes(p, dentry->short_name_nbytes + 2, + dentry->short_name); } /* Align to 8-byte boundary */ @@ -1681,16 +1748,16 @@ static u8 *write_dentry(const struct dentry *dentry, u8 *p) /* Write the alternate data streams, if there are any. Please see * read_ads_entries() for comments about the format of the on-disk * alternate data stream entries. */ - for (u16 i = 0; i < inode->num_ads; i++) { - p = put_u64(p, ads_entry_total_length(&inode->ads_entries[i])); + for (u16 i = 0; i < inode->i_num_ads; i++) { + p = put_u64(p, ads_entry_total_length(&inode->i_ads_entries[i])); p = put_u64(p, 0); /* Unused */ hash = inode_stream_hash(inode, i + 1); p = put_bytes(p, SHA1_HASH_SIZE, hash); - p = put_u16(p, inode->ads_entries[i].stream_name_len); - if (inode->ads_entries[i].stream_name_len) { - p = put_bytes(p, inode->ads_entries[i].stream_name_len, - (u8*)inode->ads_entries[i].stream_name); - p = put_u16(p, 0); + p = put_u16(p, inode->i_ads_entries[i].stream_name_nbytes); + if (inode->i_ads_entries[i].stream_name_nbytes) { + p = put_bytes(p, + inode->i_ads_entries[i].stream_name_nbytes + 2, + inode->i_ads_entries[i].stream_name); } p = put_zeroes(p, (8 - (p - orig_p) % 8) % 8); } @@ -1698,12 +1765,30 @@ static u8 *write_dentry(const struct dentry *dentry, u8 *p) return p; } +static int +write_dentry_cb(struct wim_dentry *dentry, void *_p) +{ + u8 **p = _p; + *p = write_dentry(dentry, *p); + return 0; +} + +static u8 * +write_dentry_tree_recursive(const struct wim_dentry *parent, u8 *p); + +static int +write_dentry_tree_recursive_cb(struct wim_dentry *dentry, void *_p) +{ + u8 **p = _p; + *p = write_dentry_tree_recursive(dentry, *p); + return 0; +} + /* Recursive function that writes a dentry tree rooted at @parent, not including * @parent itself, which has already been written. */ -static u8 *write_dentry_tree_recursive(const struct dentry *parent, u8 *p) +static u8 * +write_dentry_tree_recursive(const struct wim_dentry *parent, u8 *p) { - const struct dentry *child, *children; - /* Nothing to do if this dentry has no children. */ if (parent->subdir_offset == 0) return p; @@ -1714,25 +1799,13 @@ static u8 *write_dentry_tree_recursive(const struct dentry *parent, u8 *p) * recursively writing the directory trees rooted at each of the child * dentries, since the on-disk dentries for a dentry's children are * always located at consecutive positions in the metadata resource! */ - children = parent->d_inode->children; - child = children; - if (child) { - do { - p = write_dentry(child, p); - child = child->next; - } while (child != children); - } + for_dentry_child(parent, write_dentry_cb, &p); /* write end of directory entry */ p = put_u64(p, 0); /* Recurse on children. */ - if (child) { - do { - p = write_dentry_tree_recursive(child, p); - child = child->next; - } while (child != children); - } + for_dentry_child(parent, write_dentry_tree_recursive_cb, &p); return p; } @@ -1743,7 +1816,8 @@ static u8 *write_dentry_tree_recursive(const struct dentry *parent, u8 *p) * * Returns pointer to the byte after the last byte we wrote. */ -u8 *write_dentry_tree(const struct dentry *root, u8 *p) +u8 * +write_dentry_tree(const struct wim_dentry *root, u8 *p) { DEBUG("Writing dentry tree."); wimlib_assert(dentry_is_root(root)); @@ -1759,4 +1833,3 @@ u8 *write_dentry_tree(const struct dentry *root, u8 *p) /* Recursively write the rest of the dentry tree. */ return write_dentry_tree_recursive(root, p); } -