X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fdentry.c;h=927b3da9baa1a80628e72d3da5ee2ef6cb548fa2;hp=d92fb85263942593b02afa228a423b5d39e7507f;hb=29a09c1a5c20e1b04cc11ef24f5863bf8db7796c;hpb=89198eafbaf6afac99dc74f77753466f9c1bc7f0 diff --git a/src/dentry.c b/src/dentry.c index d92fb852..927b3da9 100644 --- a/src/dentry.c +++ b/src/dentry.c @@ -40,6 +40,9 @@ #include "wimlib_internal.h" +/* 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) { @@ -51,24 +54,26 @@ static u64 __dentry_correct_length_unaligned(u16 file_name_len, return length; } +/* Calculates the unaligned length, in bytes, of an on-disk WIM dentry, based on + * 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) { return __dentry_correct_length_unaligned(dentry->file_name_len, dentry->short_name_len); } -/* Return the "correct" value to write in the length field of the dentry, based - * on the file name length and short name length */ +/* 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) { return (dentry_correct_length_unaligned(dentry) + 7) & ~7; } -/* - * Returns true if @dentry has the UTF-8 file name @name that has length - * @name_len. - */ -static bool dentry_has_name(const struct dentry *dentry, const char *name, +/* 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) { if (dentry->file_name_utf8_len != name_len) @@ -76,6 +81,8 @@ static bool dentry_has_name(const struct dentry *dentry, const char *name, return memcmp(dentry->file_name_utf8, name, name_len) == 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) { @@ -163,20 +170,22 @@ static u64 __dentry_total_length(const struct dentry *dentry, u64 length) 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) { return __dentry_total_length(dentry, dentry_correct_length_unaligned(dentry)); } -/* Real length of a dentry, including the alternate data stream entries, which - * are not included in the dentry->length field... */ +/* 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) { return __dentry_total_length(dentry, dentry->length); } -/* Transfers file attributes from a `stat' buffer to an inode. */ +/* Transfers file attributes from a `stat' buffer to a WIM "inode". */ void stbuf_to_inode(const struct stat *stbuf, struct inode *inode) { if (S_ISLNK(stbuf->st_mode)) { @@ -191,7 +200,7 @@ void stbuf_to_inode(const struct stat *stbuf, struct inode *inode) inode->ino = (u64)stbuf->st_ino; else inode->ino = (u64)stbuf->st_ino | - ((u64)stbuf->st_dev << (sizeof(ino_t) * 8)); + ((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); @@ -199,7 +208,7 @@ void stbuf_to_inode(const struct stat *stbuf, struct inode *inode) } #ifdef WITH_FUSE -/* Transfers file attributes from a struct inode to a `stat' buffer. +/* 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 @@ -244,11 +253,11 @@ int inode_to_stbuf(const struct inode *inode, struct lookup_table_entry *lte, } #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 for_dentry_in_tree(struct dentry *root, int (*visitor)(struct dentry*, void*), void *arg) { int ret; @@ -273,11 +282,11 @@ int for_dentry_in_tree(struct dentry *root, 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 for_dentry_in_tree_depth(struct dentry *root, int (*visitor)(struct dentry*, void*), void *arg) { int ret; @@ -297,9 +306,9 @@ int for_dentry_in_tree_depth(struct dentry *root, return visitor(root, arg); } -/* +/* * Calculate the full path of @dentry, based on its parent's full path and on - * its UTF-8 file name. + * its UTF-8 file name. */ int calculate_dentry_full_path(struct dentry *dentry, void *ignore) { @@ -347,18 +356,19 @@ oom: return WIMLIB_ERR_NOMEM; } -/* - * Recursively calculates the subdir offsets for a directory tree. +/* + * Recursively calculates the subdir offsets for a directory tree. * * @dentry: The root of the directory tree. * @subdir_offset_p: The current subdirectory offset; i.e., the subdirectory - * offset for @dentry. + * offset for @dentry. */ void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p) { - struct dentry *child; + struct dentry *child, *children; - child = dentry->d_inode->children; + children = dentry->d_inode->children; + child = children; dentry->subdir_offset = *subdir_offset_p; if (child) { @@ -367,7 +377,7 @@ void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p) do { *subdir_offset_p += dentry_correct_total_length(child); child = child->next; - } while (child != dentry->d_inode->children); + } while (child != children); /* End-of-directory dentry on disk. */ *subdir_offset_p += 8; @@ -377,7 +387,7 @@ void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p) do { calculate_subdir_offsets(child, subdir_offset_p); child = child->next; - } while (child != dentry->d_inode->children); + } while (child != children); } else { /* On disk, childless directories have a valid subdir_offset * that points to an 8-byte end-of-directory dentry. Regular @@ -389,14 +399,14 @@ void calculate_subdir_offsets(struct dentry *dentry, u64 *subdir_offset_p) } } -/* Returns the child of @dentry that has the file name @name. +/* 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, +struct dentry *get_dentry_child_with_name(const struct dentry *dentry, const char *name) { struct dentry *child; size_t name_len; - + child = dentry->d_inode->children; if (child) { name_len = strlen(name); @@ -414,21 +424,22 @@ struct dentry *get_dentry_child_with_name(const struct dentry *dentry, static struct dentry *get_dentry_relative_path(struct dentry *cur_dir, const char *path) { - struct dentry *child; + struct dentry *child, *children; size_t base_len; const char *new_path; if (*path == '\0') return cur_dir; - child = cur_dir->d_inode->children; - if (child) { + children = cur_dir->d_inode->children; + if (children) { new_path = path_next_part(path, &base_len); + child = children; 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); + } while (child != children); } return NULL; } @@ -447,10 +458,10 @@ struct inode *wim_pathname_to_inode(WIMStruct *w, const char *path) { struct dentry *dentry; dentry = get_dentry(w, path); - if (!dentry) - return NULL; - else + if (dentry) return dentry->d_inode; + else + return NULL; } /* Returns the dentry that corresponds to the parent directory of @path, or NULL @@ -557,7 +568,7 @@ int print_dentry(struct dentry *dentry, void *lookup_table) } else { hash = inode_stream_hash(inode, 0); if (hash) { - printf("Hash = 0x"); + printf("Hash = 0x"); print_hash(hash); putchar('\n'); putchar('\n'); @@ -570,7 +581,7 @@ int print_dentry(struct dentry *dentry, void *lookup_table) inode->ads_entries[i].stream_name_len); hash = inode_stream_hash(inode, i + 1); if (hash) { - printf("Hash = 0x"); + printf("Hash = 0x"); print_hash(hash); putchar('\n'); } @@ -590,30 +601,30 @@ static void dentry_common_init(struct dentry *dentry) static struct inode *new_timeless_inode() { struct inode *inode = CALLOC(1, sizeof(struct inode)); - if (!inode) - return NULL; - inode->security_id = -1; - inode->link_count = 1; -#ifdef WITH_FUSE - inode->next_stream_id = 1; -#endif - INIT_LIST_HEAD(&inode->dentry_list); + if (inode) { + inode->security_id = -1; + inode->link_count = 1; + #ifdef WITH_FUSE + inode->next_stream_id = 1; + #endif + INIT_LIST_HEAD(&inode->dentry_list); + } return inode; } static struct inode *new_inode() { struct inode *inode = new_timeless_inode(); - if (!inode) - return NULL; - u64 now = get_wim_timestamp(); - inode->creation_time = now; - inode->last_access_time = now; - inode->last_write_time = now; + if (inode) { + u64 now = get_wim_timestamp(); + inode->creation_time = now; + inode->last_access_time = now; + inode->last_write_time = now; + } return inode; } -/* +/* * Creates an unlinked directory entry. * * @name: The UTF-8 filename of the new dentry. @@ -623,7 +634,7 @@ static struct inode *new_inode() struct dentry *new_dentry(const char *name) { struct dentry *dentry; - + dentry = MALLOC(sizeof(struct dentry)); if (!dentry) goto err; @@ -703,6 +714,7 @@ void free_inode(struct inode *inode) wimlib_assert(inode->num_opened_fds == 0); FREE(inode->fds); #endif + FREE(inode->extracted_file); FREE(inode); } } @@ -719,38 +731,36 @@ static void put_inode(struct inode *inode) #endif { free_inode(inode); - inode = NULL; } } } -/* Frees a WIM dentry. +/* Frees a WIM dentry. * * The inode is freed only if its link count is decremented to 0. */ void free_dentry(struct dentry *dentry) { - wimlib_assert(dentry); - struct inode *inode; - + wimlib_assert(dentry != NULL); FREE(dentry->file_name); FREE(dentry->file_name_utf8); FREE(dentry->short_name); FREE(dentry->full_path_utf8); - put_inode(dentry->d_inode); + if (dentry->d_inode) + put_inode(dentry->d_inode); FREE(dentry); } void put_dentry(struct dentry *dentry) { - wimlib_assert(dentry); - wimlib_assert(dentry->refcnt); + wimlib_assert(dentry != NULL); + 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'. */ @@ -774,7 +784,7 @@ static int do_free_dentry(struct dentry *dentry, void *__lookup_table) return 0; } -/* +/* * Unlinks and frees a dentry tree. * * @root: The root of the tree. @@ -796,7 +806,7 @@ int increment_dentry_refcnt(struct dentry *dentry, void *ignore) return 0; } -/* +/* * Links a dentry into the directory tree. * * @dentry: The dentry to link. @@ -822,8 +832,8 @@ void link_dentry(struct dentry *dentry, struct dentry *parent) #ifdef WITH_FUSE -/* - * Unlink a dentry from the directory tree. +/* + * Unlink a dentry from the directory tree. * * Note: This merely removes it from the in-memory tree structure. */ @@ -842,58 +852,6 @@ void unlink_dentry(struct dentry *dentry) } #endif -/* Parameters for calculate_dentry_statistics(). */ -struct image_statistics { - struct lookup_table *lookup_table; - u64 *dir_count; - u64 *file_count; - u64 *total_bytes; - u64 *hard_link_bytes; -}; - -static int calculate_dentry_statistics(struct dentry *dentry, void *arg) -{ - struct image_statistics *stats; - struct lookup_table_entry *lte; - - stats = arg; - - if (dentry_is_directory(dentry) && !dentry_is_root(dentry)) - ++*stats->dir_count; - else - ++*stats->file_count; - - for (unsigned i = 0; i <= dentry->d_inode->num_ads; i++) { - lte = inode_stream_lte(dentry->d_inode, i, stats->lookup_table); - if (lte) { - *stats->total_bytes += wim_resource_size(lte); - if (++lte->out_refcnt == 1) - *stats->hard_link_bytes += wim_resource_size(lte); - } - } - return 0; -} - -/* Calculates some statistics about a dentry tree. */ -void calculate_dir_tree_statistics(struct dentry *root, struct lookup_table *table, - u64 *dir_count_ret, u64 *file_count_ret, - u64 *total_bytes_ret, - u64 *hard_link_bytes_ret) -{ - struct image_statistics stats; - *dir_count_ret = 0; - *file_count_ret = 0; - *total_bytes_ret = 0; - *hard_link_bytes_ret = 0; - stats.lookup_table = table; - stats.dir_count = dir_count_ret; - stats.file_count = file_count_ret; - stats.total_bytes = total_bytes_ret; - stats.hard_link_bytes = hard_link_bytes_ret; - for_lookup_table_entry(table, lte_zero_out_refcnt, NULL); - for_dentry_in_tree(root, calculate_dentry_statistics, &stats); -} - static inline struct dentry *inode_first_dentry(struct inode *inode) { wimlib_assert(inode->dentry_list.next != &inode->dentry_list); @@ -942,7 +900,7 @@ static int verify_inode(struct inode *inode, const WIMStruct *w) WARNING("The following lookup table entry " "has a reference count of %u, but", lte->refcnt); - WARNING("We found %zu references to it", + WARNING("We found %u references to it", lte->real_refcnt); WARNING("(One dentry referencing it is at `%s')", first_dentry->full_path_utf8); @@ -979,7 +937,7 @@ static int verify_inode(struct inode *inode, const WIMStruct *w) num_unnamed_streams++; } if (num_unnamed_streams > 1) { - ERROR("Dentry `%s' has multiple (%u) un-named streams", + ERROR("Dentry `%s' has multiple (%u) un-named streams", first_dentry->full_path_utf8, num_unnamed_streams); goto out; } @@ -992,21 +950,19 @@ out: /* Run some miscellaneous verifications on a WIM dentry */ int verify_dentry(struct dentry *dentry, void *wim) { - const WIMStruct *w = wim; - const struct inode *inode = dentry->d_inode; - int ret = WIMLIB_ERR_INVALID_DENTRY; + int ret; if (!dentry->d_inode->verified) { - ret = verify_inode(dentry->d_inode, w); + ret = verify_inode(dentry->d_inode, wim); if (ret != 0) - goto out; + return ret; } /* 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; + return WIMLIB_ERR_INVALID_DENTRY; } /* Make sure root dentry is unnamed */ @@ -1014,7 +970,7 @@ int verify_dentry(struct dentry *dentry, void *wim) if (dentry->file_name_len) { ERROR("The root dentry is named `%s', but it must " "be unnamed", dentry->file_name_utf8); - goto out; + return WIMLIB_ERR_INVALID_DENTRY; } } @@ -1027,9 +983,7 @@ int verify_dentry(struct dentry *dentry, void *wim) } #endif - ret = 0; -out: - return ret; + return 0; } @@ -1061,7 +1015,7 @@ struct ads_entry *inode_get_ads_entry(struct inode *inode, #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. */ @@ -1127,7 +1081,7 @@ void inode_remove_ads(struct inode *inode, u16 idx, -/* +/* * Reads the alternate data stream entries for a dentry. * * @p: Pointer to buffer that starts with the first alternate stream entry. @@ -1143,7 +1097,7 @@ void inode_remove_ads(struct inode *inode, u16 idx, * * struct ads_entry_on_disk { * u64 length; // Length of the entry, in bytes. This includes - * all fields (including the stream name and + * all fields (including the stream name and * null terminator if present, AND the padding!). * u64 reserved; // Seems to be unused * u8 hash[20]; // SHA1 message digest of the uncompressed stream @@ -1291,7 +1245,7 @@ out_free_ads_entries: return ret; } -/* +/* * Reads a directory entry, including all alternate data stream entries that * follow it, from the WIM image's metadata resource. * @@ -1306,7 +1260,7 @@ out_free_ads_entries: * 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, +int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, u64 offset, struct dentry *dentry) { const u8 *p; @@ -1381,7 +1335,7 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, p = get_u64(p, &inode->last_write_time); p = get_bytes(p, SHA1_HASH_SIZE, inode->hash); - + /* * I don't know what's going on here. It seems like M$ screwed up the * reparse points, then put the fields in the same place and didn't @@ -1400,14 +1354,14 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, /* 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, &short_name_len); p = get_u16(p, &file_name_len); /* 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. + * the length of the dentry is large enough to actually hold them. * * The calculated length here is unaligned to allow for the possibility * that the dentry->length names an unaligned length, although this @@ -1418,10 +1372,11 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, 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_len = %hu, file_name_len = %hu)", calculated_size, dentry->length, short_name_len, file_name_len); - return WIMLIB_ERR_INVALID_DENTRY; + ret = WIMLIB_ERR_INVALID_DENTRY; + goto out_free_inode; } /* Read the filename if present. Note: if the filename is empty, there @@ -1431,12 +1386,13 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, if (!file_name) { ERROR("Failed to allocate %hu bytes for dentry file name", file_name_len); - return WIMLIB_ERR_NOMEM; + ret = WIMLIB_ERR_NOMEM; + goto out_free_inode; } 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 = utf16_to_utf8(file_name, file_name_len, &file_name_utf8_len); if (!file_name_utf8) { @@ -1496,12 +1452,12 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, p = get_bytes(p, short_name_len, short_name); if (*(u16*)p) - WARNING("Expected two zero bytes following the file name " + WARNING("Expected two zero bytes following the short name of " "`%s', but found non-zero bytes", file_name_utf8); p += 2; } - /* + /* * Read the alternate data streams, if present. dentry->num_ads tells * us how many they are, and they will directly follow the dentry * on-disk. @@ -1511,18 +1467,35 @@ int read_dentry(const u8 metadata_resource[], u64 metadata_resource_len, * included in the dentry->length field for some reason. */ if (inode->num_ads != 0) { - if (calculated_size > metadata_resource_len - offset) { - ERROR("Not enough space in metadata resource for " - "alternate stream entries"); - ret = WIMLIB_ERR_INVALID_DENTRY; - goto out_free_short_name; + + /* Trying different lengths is just a hack to make sure we have + * a chance of reading the ADS entries correctly despite the + * poor documentation. */ + + if (calculated_size != dentry->length) { + WARNING("Trying calculated dentry length (%"PRIu64") " + "instead of dentry->length field (%"PRIu64") " + "to read ADS entries", + calculated_size, dentry->length); } - ret = read_ads_entries(&metadata_resource[offset + calculated_size], - inode, - metadata_resource_len - offset - calculated_size); - if (ret != 0) - goto out_free_short_name; + u64 lengths_to_try[3] = {calculated_size, + (dentry->length + 7) & ~7, + dentry->length}; + ret = WIMLIB_ERR_INVALID_DENTRY; + for (size_t i = 0; i < ARRAY_LEN(lengths_to_try); i++) { + if (lengths_to_try[i] > metadata_resource_len - offset) + continue; + ret = read_ads_entries(&metadata_resource[offset + lengths_to_try[i]], + inode, + metadata_resource_len - offset - lengths_to_try[i]); + if (ret == 0) + goto out; + } + ERROR("Failed to read alternate data stream " + "entries of `%s'", dentry->file_name_utf8); + 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. */ @@ -1571,7 +1544,7 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, struct dentry cur_child; int ret; - /* + /* * If @dentry has no child dentries, nothing more needs to be done for * this branch. This is the case for regular files, symbolic links, and * *possibly* empty directories (although an empty directory may also @@ -1584,7 +1557,7 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, while (1) { /* Read next child of @dentry into @cur_child. */ - ret = read_dentry(metadata_resource, metadata_resource_len, + ret = read_dentry(metadata_resource, metadata_resource_len, cur_offset, &cur_child); if (ret != 0) break; @@ -1618,7 +1591,7 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, /* If there are children of this child, call this procedure * recursively. */ if (child->subdir_offset != 0) { - ret = read_dentry_tree(metadata_resource, + ret = read_dentry_tree(metadata_resource, metadata_resource_len, child); if (ret != 0) break; @@ -1642,7 +1615,7 @@ int read_dentry_tree(const u8 metadata_resource[], u64 metadata_resource_len, return ret; } -/* +/* * Writes a WIM dentry to an output buffer. * * @dentry: The dentry structure. @@ -1726,24 +1699,25 @@ static u8 *write_dentry(const struct dentry *dentry, u8 *p) * @parent itself, which has already been written. */ static u8 *write_dentry_tree_recursive(const struct dentry *parent, u8 *p) { - const struct dentry *child; + const struct dentry *child, *children; /* Nothing to do if this dentry has no children. */ if (parent->subdir_offset == 0) return p; - /* Write child dentries and end-of-directory entry. + /* Write child dentries and end-of-directory entry. * * Note: we need to write all of this dentry's children before * 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! */ - child = parent->d_inode->children; + children = parent->d_inode->children; + child = children; if (child) { do { p = write_dentry(child, p); child = child->next; - } while (child != parent->d_inode->children); + } while (child != children); } /* write end of directory entry */ @@ -1754,7 +1728,7 @@ static u8 *write_dentry_tree_recursive(const struct dentry *parent, u8 *p) do { p = write_dentry_tree_recursive(child, p); child = child->next; - } while (child != parent->d_inode->children); + } while (child != children); } return p; } @@ -1768,6 +1742,7 @@ static u8 *write_dentry_tree_recursive(const struct dentry *parent, u8 *p) */ u8 *write_dentry_tree(const struct dentry *root, u8 *p) { + DEBUG("Writing dentry tree."); wimlib_assert(dentry_is_root(root)); /* If we're the root dentry, we have no parent that already