X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fadd_image.c;h=7f337c5d04e032e8b0309c73c918a3b169e9f0de;hp=ac6be4d155eea61ee6542c7a38bdc8e9af6f270c;hb=e8c3ca2d1d0cac3d64985b45a9f654d2029a7518;hpb=ad01b10ddbd18b3a29cfd5f3df0db6245108b8c9 diff --git a/src/add_image.c b/src/add_image.c index ac6be4d1..7f337c5d 100644 --- a/src/add_image.c +++ b/src/add_image.c @@ -1,5 +1,5 @@ /* - * add_image.c + * add_image.c - Add an image to a WIM file. */ /* @@ -21,1065 +21,207 @@ * along with wimlib; if not, see http://www.gnu.org/licenses/. */ -#include "config.h" - -#ifdef __WIN32__ -# include "win32.h" -#else -# include -# include -# include -# include "timestamp.h" +#ifdef HAVE_CONFIG_H +# include "config.h" #endif -#include "wimlib_internal.h" -#include "dentry.h" -#include "lookup_table.h" -#include "xml.h" -#include "security.h" - -#include -#include -#include -#include -#include - -#include - -#ifdef HAVE_ALLOCA_H -# include -#endif +#include "wimlib.h" +#include "wimlib/capture.h" +#include "wimlib/error.h" +#include "wimlib/lookup_table.h" +#include "wimlib/metadata.h" +#include "wimlib/xml.h" /* * Adds the dentry tree and security data for a new image to the image metadata * array of the WIMStruct. */ -int -add_new_dentry_tree(WIMStruct *w, struct wim_dentry *root_dentry, +static int +add_new_dentry_tree(WIMStruct *wim, struct wim_dentry *root_dentry, struct wim_security_data *sd) { - struct wim_lookup_table_entry *metadata_lte; - struct wim_image_metadata *imd; struct wim_image_metadata *new_imd; - - wimlib_assert(root_dentry != NULL); - - DEBUG("Reallocating image metadata array for image_count = %u", - w->hdr.image_count + 1); - imd = CALLOC((w->hdr.image_count + 1), sizeof(struct wim_image_metadata)); - - if (!imd) { - ERROR("Failed to allocate memory for new image metadata array"); - goto err; - } - - memcpy(imd, w->image_metadata, - w->hdr.image_count * sizeof(struct wim_image_metadata)); + struct wim_lookup_table_entry *metadata_lte; + int ret; metadata_lte = new_lookup_table_entry(); if (!metadata_lte) - goto err_free_imd; + return WIMLIB_ERR_NOMEM; metadata_lte->resource_entry.flags = WIM_RESHDR_FLAG_METADATA; + metadata_lte->unhashed = 1; - new_imd = &imd[w->hdr.image_count]; + new_imd = new_image_metadata(); + if (!new_imd) { + free_lookup_table_entry(metadata_lte); + return WIMLIB_ERR_NOMEM; + } new_imd->root_dentry = root_dentry; new_imd->metadata_lte = metadata_lte; new_imd->security_data = sd; new_imd->modified = 1; - FREE(w->image_metadata); - w->image_metadata = imd; - w->hdr.image_count++; - return 0; -err_free_imd: - FREE(imd); -err: - return WIMLIB_ERR_NOMEM; - -} - -#ifndef __WIN32__ - -static int -unix_capture_regular_file(const char *path, - uint64_t size, - struct wim_inode *inode, - struct wim_lookup_table *lookup_table) -{ - struct wim_lookup_table_entry *lte; - u8 hash[SHA1_HASH_SIZE]; - int ret; - - inode->i_attributes = FILE_ATTRIBUTE_NORMAL; - - /* Empty files do not have to have a lookup table entry. */ - if (size == 0) - return 0; - - /* For each regular file, we must check to see if the file is in - * the lookup table already; if it is, we increment its refcnt; - * otherwise, we create a new lookup table entry and insert it. - * */ - - ret = sha1sum(path, hash); + ret = append_image_metadata(wim, new_imd); if (ret) - return ret; - - lte = __lookup_resource(lookup_table, hash); - if (lte) { - lte->refcnt++; - DEBUG("Add lte reference %u for `%s'", lte->refcnt, - path); - } else { - char *file_on_disk = STRDUP(path); - if (!file_on_disk) { - ERROR("Failed to allocate memory for file path"); - return WIMLIB_ERR_NOMEM; - } - lte = new_lookup_table_entry(); - if (!lte) { - FREE(file_on_disk); - return WIMLIB_ERR_NOMEM; - } - lte->file_on_disk = file_on_disk; - lte->resource_location = RESOURCE_IN_FILE_ON_DISK; - lte->resource_entry.original_size = size; - lte->resource_entry.size = size; - copy_hash(lte->hash, hash); - lookup_table_insert(lookup_table, lte); - } - inode->i_lte = lte; - return 0; -} - -static int -unix_build_dentry_tree_recursive(struct wim_dentry **root_ret, - char *path, - size_t path_len, - struct wim_lookup_table *lookup_table, - const struct wimlib_capture_config *config, - int add_image_flags, - wimlib_progress_func_t progress_func); - -static int -unix_capture_directory(struct wim_dentry *dir_dentry, - char *path, - size_t path_len, - struct wim_lookup_table *lookup_table, - const struct wimlib_capture_config *config, - int add_image_flags, - wimlib_progress_func_t progress_func) -{ - - DIR *dir; - struct dirent entry, *result; - struct wim_dentry *child; - int ret; - - dir_dentry->d_inode->i_attributes = FILE_ATTRIBUTE_DIRECTORY; - dir = opendir(path); - if (!dir) { - ERROR_WITH_ERRNO("Failed to open the directory `%s'", - path); - return WIMLIB_ERR_OPEN; - } - - /* Recurse on directory contents */ - while (1) { - errno = 0; - ret = readdir_r(dir, &entry, &result); - if (ret != 0) { - ret = WIMLIB_ERR_READ; - ERROR_WITH_ERRNO("Error reading the " - "directory `%s'", - path); - break; - } - if (result == NULL) - break; - if (result->d_name[0] == '.' && (result->d_name[1] == '\0' - || (result->d_name[1] == '.' && result->d_name[2] == '\0'))) - continue; - - size_t name_len = strlen(result->d_name); - - path[path_len] = '/'; - memcpy(&path[path_len + 1], result->d_name, name_len + 1); - ret = unix_build_dentry_tree_recursive(&child, - path, - path_len + 1 + name_len, - lookup_table, - config, - add_image_flags, - progress_func); - if (ret) - break; - if (child) - dentry_add_child(dir_dentry, child); - } - closedir(dir); + put_image_metadata(new_imd, NULL); return ret; } -static int -unix_capture_symlink(const char *path, - struct wim_inode *inode, - struct wim_lookup_table *lookup_table) +/* Append an empty image to the WIMStruct. */ +WIMLIBAPI int +wimlib_add_empty_image(WIMStruct *wim, const tchar *name, int *new_idx_ret) { - char deref_name_buf[4096]; - ssize_t deref_name_len; int ret; + struct wim_security_data *sd; - inode->i_attributes = FILE_ATTRIBUTE_REPARSE_POINT; - inode->i_reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK; - - /* The idea here is to call readlink() to get the UNIX target of - * the symbolic link, then turn the target into a reparse point - * data buffer that contains a relative or absolute symbolic - * link (NOT a junction point or *full* path symbolic link with - * drive letter). - */ - deref_name_len = readlink(path, deref_name_buf, - sizeof(deref_name_buf) - 1); - if (deref_name_len >= 0) { - deref_name_buf[deref_name_len] = '\0'; - DEBUG("Read symlink `%s'", deref_name_buf); - ret = inode_set_symlink(inode, deref_name_buf, - lookup_table, NULL); - if (ret == 0) { - /* Unfortunately, Windows seems to have the concept of - * "file" symbolic links as being different from - * "directory" symbolic links... so - * FILE_ATTRIBUTE_DIRECTORY needs to be set on the - * symbolic link if the *target* of the symbolic link is - * a directory. */ - struct stat stbuf; - if (stat(path, &stbuf) == 0 && S_ISDIR(stbuf.st_mode)) - inode->i_attributes |= FILE_ATTRIBUTE_DIRECTORY; - } - } else { - ERROR_WITH_ERRNO("Failed to read target of " - "symbolic link `%s'", path); - ret = WIMLIB_ERR_READLINK; - } - return ret; -} - -static int -unix_build_dentry_tree_recursive(struct wim_dentry **root_ret, - char *path, - size_t path_len, - struct wim_lookup_table *lookup_table, - const struct wimlib_capture_config *config, - int add_image_flags, - wimlib_progress_func_t progress_func) -{ - struct wim_dentry *root = NULL; - int ret = 0; - struct wim_inode *inode; + DEBUG("Adding empty image \"%"TS"\"", name); - if (exclude_path(path, path_len, config, true)) { - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) { - ERROR("Cannot exclude the root directory from capture"); - ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG; - goto out; - } - if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE) - && progress_func) - { - union wimlib_progress_info info; - info.scan.cur_path = path; - info.scan.excluded = true; - progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info); - } + if (name == NULL || name[0] == T('\0')) { + ERROR("Must specify a non-empty string for the image name"); + ret = WIMLIB_ERR_INVALID_PARAM; goto out; } - if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE) - && progress_func) - { - union wimlib_progress_info info; - info.scan.cur_path = path; - info.scan.excluded = false; - progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info); + if (wim->hdr.total_parts != 1) { + ERROR("Cannot add an image to a split WIM"); + ret = WIMLIB_ERR_SPLIT_UNSUPPORTED; + goto out; } - /* UNIX version of capturing a directory tree */ - struct stat stbuf; - int (*stat_fn)(const char *restrict, struct stat *restrict); - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE) - stat_fn = stat; - else - stat_fn = lstat; - - ret = (*stat_fn)(path, &stbuf); - if (ret != 0) { - ERROR_WITH_ERRNO("Failed to stat `%s'", path); + if (wimlib_image_name_in_use(wim, name)) { + ERROR("There is already an image named \"%"TS"\" in the WIM!", + name); + ret = WIMLIB_ERR_IMAGE_NAME_COLLISION; goto out; } - if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) && - !S_ISDIR(stbuf.st_mode)) - { - /* Do a dereference-stat in case the root is a symbolic link. - * This case is allowed, provided that the symbolic link points - * to a directory. */ - ret = stat(path, &stbuf); - if (ret != 0) { - ERROR_WITH_ERRNO("Failed to stat `%s'", path); - ret = WIMLIB_ERR_STAT; - goto out; - } - if (!S_ISDIR(stbuf.st_mode)) { - ERROR("`%s' is not a directory", path); - ret = WIMLIB_ERR_NOTDIR; - goto out; - } - } - if (!S_ISREG(stbuf.st_mode) && !S_ISDIR(stbuf.st_mode) - && !S_ISLNK(stbuf.st_mode)) { - ERROR("`%s' is not a regular file, directory, or symbolic link.", - path); - ret = WIMLIB_ERR_SPECIAL_FILE; + sd = new_wim_security_data(); + if (!sd) { + ret = WIMLIB_ERR_NOMEM; goto out; } - ret = new_dentry_with_timeless_inode(path_basename_with_len(path, path_len), - &root); + ret = add_new_dentry_tree(wim, NULL, sd); if (ret) - goto out; - - inode = root->d_inode; + goto out_free_security_data; -#ifdef HAVE_STAT_NANOSECOND_PRECISION - inode->i_creation_time = timespec_to_wim_timestamp(stbuf.st_mtim); - inode->i_last_write_time = timespec_to_wim_timestamp(stbuf.st_mtim); - inode->i_last_access_time = timespec_to_wim_timestamp(stbuf.st_atim); -#else - inode->i_creation_time = unix_timestamp_to_wim(stbuf.st_mtime); - inode->i_last_write_time = unix_timestamp_to_wim(stbuf.st_mtime); - inode->i_last_access_time = unix_timestamp_to_wim(stbuf.st_atime); -#endif - /* Leave the inode number at 0 for directories. Otherwise grab the - * inode number from the `stat' buffer, including the device number if - * possible. */ - if (!S_ISDIR(stbuf.st_mode)) { - if (sizeof(ino_t) >= 8) - inode->i_ino = (u64)stbuf.st_ino; - else - inode->i_ino = (u64)stbuf.st_ino | - ((u64)stbuf.st_dev << - ((sizeof(ino_t) * 8) & 63)); - } - inode->i_resolved = 1; - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) { - ret = inode_set_unix_data(inode, stbuf.st_uid, - stbuf.st_gid, - stbuf.st_mode, - lookup_table, - UNIX_DATA_ALL | UNIX_DATA_CREATE); - if (ret) - goto out; - } - add_image_flags &= ~(WIMLIB_ADD_IMAGE_FLAG_ROOT | WIMLIB_ADD_IMAGE_FLAG_SOURCE); - if (S_ISREG(stbuf.st_mode)) - ret = unix_capture_regular_file(path, stbuf.st_size, - inode, lookup_table); - else if (S_ISDIR(stbuf.st_mode)) - ret = unix_capture_directory(root, path, path_len, - lookup_table, config, - add_image_flags, progress_func); - else - ret = unix_capture_symlink(path, inode, lookup_table); + ret = xml_add_image(wim, name); + if (ret) + goto out_put_image_metadata; + + if (new_idx_ret) + *new_idx_ret = wim->hdr.image_count; + DEBUG("Successfully added new image (index %d)", + wim->hdr.image_count); + goto out; +out_put_image_metadata: + put_image_metadata(wim->image_metadata[--wim->hdr.image_count], + wim->lookup_table); + goto out; +out_free_security_data: + free_security_data(sd); out: - if (ret == 0) - *root_ret = root; - else - free_dentry_tree(root, lookup_table); return ret; } -/* - * unix_build_dentry_tree(): - * Builds a tree of WIM dentries from an on-disk directory tree (UNIX - * version; no NTFS-specific data is captured). - * - * @root_ret: Place to return a pointer to the root of the dentry tree. Only - * modified if successful. Set to NULL if the file or directory was - * excluded from capture. - * - * @root_disk_path: The path to the root of the directory tree on disk. - * - * @lookup_table: The lookup table for the WIM file. For each file added to the - * dentry tree being built, an entry is added to the lookup table, - * unless an identical stream is already in the lookup table. - * These lookup table entries that are added point to the path of - * the file on disk. - * - * @sd_set: Ignored. (Security data only captured in NTFS mode.) - * - * @config: - * Configuration for files to be excluded from capture. - * - * @add_flags: Bitwise or of WIMLIB_ADD_IMAGE_FLAG_* - * - * @extra_arg: Ignored - * - * @return: 0 on success, nonzero on failure. It is a failure if any of - * the files cannot be `stat'ed, or if any of the needed - * directories cannot be opened or read. Failure to add the files - * to the WIM may still occur later when trying to actually read - * the on-disk files during a call to wimlib_write() or - * wimlib_overwrite(). - */ -static int -unix_build_dentry_tree(struct wim_dentry **root_ret, - const char *root_disk_path, - struct wim_lookup_table *lookup_table, - struct sd_set *sd_set, - const struct wimlib_capture_config *config, - int add_image_flags, - wimlib_progress_func_t progress_func, - void *extra_arg) +static struct wimlib_update_command * +capture_sources_to_add_cmds(const struct wimlib_capture_source *sources, + size_t num_sources, + int add_flags, + const struct wimlib_capture_config *config) { - char *path_buf; - int ret; - size_t path_len; - size_t path_bufsz; - - path_bufsz = min(32790, PATH_MAX + 1); - path_len = strlen(root_disk_path); - - if (path_len >= path_bufsz) - return WIMLIB_ERR_INVALID_PARAM; + struct wimlib_update_command *add_cmds; - path_buf = MALLOC(path_bufsz); - if (!path_buf) - return WIMLIB_ERR_NOMEM; - memcpy(path_buf, root_disk_path, path_len + 1); - ret = unix_build_dentry_tree_recursive(root_ret, - path_buf, - path_len, - lookup_table, - config, - add_image_flags, - progress_func); - FREE(path_buf); - return ret; -} -#endif /* !__WIN32__ */ - -static bool -match_pattern(const tchar *path, - const tchar *path_basename, - const struct wimlib_pattern_list *list) -{ - for (size_t i = 0; i < list->num_pats; i++) { - - const tchar *pat = list->pats[i]; - const tchar *string; - - if (*pat == T('/')) { - /* Absolute path from root of capture */ - string = path; - } else { - if (tstrchr(pat, T('/'))) - /* Relative path from root of capture */ - string = path + 1; - else - /* A file name pattern */ - string = path_basename; - } - - /* Warning: on Windows native builds, fnmatch() calls the - * replacement function in win32.c. */ - if (fnmatch(pat, string, FNM_PATHNAME | FNM_NOESCAPE - #ifdef FNM_CASEFOLD - | FNM_CASEFOLD - #endif - ) == 0) - { - DEBUG("\"%"TS"\" matches the pattern \"%"TS"\"", - string, pat); - return true; - } else { - DEBUG2("\"%"TS"\" does not match the pattern \"%"TS"\"", - string, pat); + DEBUG("Translating %zu capture sources to `struct wimlib_update_command's", + num_sources); + add_cmds = CALLOC(num_sources, sizeof(add_cmds[0])); + if (add_cmds) { + for (size_t i = 0; i < num_sources; i++) { + DEBUG("Source %zu of %zu: fs_source_path=\"%"TS"\", " + "wim_target_path=\"%"TS"\"", + i + 1, num_sources, + sources[i].fs_source_path, + sources[i].wim_target_path); + add_cmds[i].op = WIMLIB_UPDATE_OP_ADD; + add_cmds[i].add.add_flags = add_flags; + add_cmds[i].add.config = (struct wimlib_capture_config*)config; + add_cmds[i].add.fs_source_path = sources[i].fs_source_path; + add_cmds[i].add.wim_target_path = sources[i].wim_target_path; } } - return false; -} - -/* Return true if the image capture configuration file indicates we should - * exclude the filename @path from capture. - * - * If @exclude_prefix is %true, the part of the path up and including the name - * of the directory being captured is not included in the path for matching - * purposes. This allows, for example, a pattern like /hiberfil.sys to match a - * file /mnt/windows7/hiberfil.sys if we are capturing the /mnt/windows7 - * directory. - */ -bool -exclude_path(const tchar *path, size_t path_len, - const struct wimlib_capture_config *config, bool exclude_prefix) -{ - const tchar *basename = path_basename_with_len(path, path_len); - if (exclude_prefix) { - wimlib_assert(path_len >= config->_prefix_num_tchars); - if (!tmemcmp(config->_prefix, path, config->_prefix_num_tchars) && - path[config->_prefix_num_tchars] == T('/')) - { - path += config->_prefix_num_tchars; - } - } - return match_pattern(path, basename, &config->exclusion_pats) && - !match_pattern(path, basename, &config->exclusion_exception_pats); - -} - -/* Strip leading and trailing forward slashes from a string. Modifies it in - * place and returns the stripped string. */ -static const tchar * -canonicalize_target_path(tchar *target_path) -{ - tchar *p; - if (target_path == NULL) - return T(""); - for (;;) { - if (*target_path == T('\0')) - return target_path; - else if (*target_path == T('/')) - target_path++; - else - break; - } - - p = tstrchr(target_path, T('\0')) - 1; - while (*p == T('/')) - *p-- = T('\0'); - return target_path; -} - -/* Strip leading and trailing slashes from the target paths, and translate all - * backslashes in the source and target paths into forward slashes. */ -static void -canonicalize_sources_and_targets(struct wimlib_capture_source *sources, - size_t num_sources) -{ - while (num_sources--) { - DEBUG("Canonicalizing { source: \"%"TS"\", target=\"%"TS"\"}", - sources->fs_source_path, - sources->wim_target_path); - - /* The Windows API can handle forward slashes. Just get rid of - * backslashes to avoid confusing other parts of the library - * code. */ - zap_backslashes(sources->fs_source_path); - if (sources->wim_target_path) - zap_backslashes(sources->wim_target_path); - - sources->wim_target_path = - (tchar*)canonicalize_target_path(sources->wim_target_path); - DEBUG("Canonical target: \"%"TS"\"", sources->wim_target_path); - sources++; - } -} - -static int -capture_source_cmp(const void *p1, const void *p2) -{ - const struct wimlib_capture_source *s1 = p1, *s2 = p2; - return tstrcmp(s1->wim_target_path, s2->wim_target_path); -} - -/* Sorts the capture sources lexicographically by target path. This occurs - * after leading and trailing forward slashes are stripped. - * - * One purpose of this is to make sure that target paths that are inside other - * target paths are added after the containing target paths. */ -static void -sort_sources(struct wimlib_capture_source *sources, size_t num_sources) -{ - qsort(sources, num_sources, sizeof(sources[0]), capture_source_cmp); -} - -static int -check_sorted_sources(struct wimlib_capture_source *sources, size_t num_sources, - int add_image_flags) -{ - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NTFS) { - if (num_sources != 1) { - ERROR("Must specify exactly 1 capture source " - "(the NTFS volume) in NTFS mode!"); - return WIMLIB_ERR_INVALID_PARAM; - } - if (sources[0].wim_target_path[0] != T('\0')) { - ERROR("In NTFS capture mode the target path inside " - "the image must be the root directory!"); - return WIMLIB_ERR_INVALID_PARAM; - } - } else if (num_sources != 0) { - /* This code is disabled because the current code - * unconditionally attempts to do overlays. So, duplicate - * target paths are OK. */ - #if 0 - if (num_sources > 1 && sources[0].wim_target_path[0] == '\0') { - ERROR("Cannot specify root target when using multiple " - "capture sources!"); - return WIMLIB_ERR_INVALID_PARAM; - } - for (size_t i = 0; i < num_sources - 1; i++) { - size_t len = strlen(sources[i].wim_target_path); - size_t j = i + 1; - const char *target1 = sources[i].wim_target_path; - do { - const char *target2 = sources[j].wim_target_path; - DEBUG("target1=%s, target2=%s", - target1,target2); - if (strncmp(target1, target2, len) || - target2[len] > '/') - break; - if (target2[len] == '/') { - ERROR("Invalid target `%s': is a prefix of `%s'", - target1, target2); - return WIMLIB_ERR_INVALID_PARAM; - } - if (target2[len] == '\0') { - ERROR("Invalid target `%s': is a duplicate of `%s'", - target1, target2); - return WIMLIB_ERR_INVALID_PARAM; - } - } while (++j != num_sources); - } - #endif - } - return 0; - -} - -/* Creates a new directory to place in the WIM image. This is to create parent - * directories that are not part of any target as needed. */ -static int -new_filler_directory(const tchar *name, struct wim_dentry **dentry_ret) -{ - int ret; - struct wim_dentry *dentry; - - DEBUG("Creating filler directory \"%"TS"\"", name); - ret = new_dentry_with_inode(name, &dentry); - if (ret == 0) { - /* Leave the inode number as 0 for now. The final inode number - * will be assigned later by assign_inode_numbers(). */ - dentry->d_inode->i_resolved = 1; - dentry->d_inode->i_attributes = FILE_ATTRIBUTE_DIRECTORY; - *dentry_ret = dentry; - } - return ret; -} - -/* Transfers the children of @branch to @target. It is an error if @target is - * not a directory or if both @branch and @target contain a child dentry with - * the same name. */ -static int -do_overlay(struct wim_dentry *target, struct wim_dentry *branch) -{ - struct rb_root *rb_root; - - DEBUG("Doing overlay \"%"WS"\" => \"%"WS"\"", - branch->file_name, target->file_name); - - if (!dentry_is_directory(target)) { - ERROR("Cannot overlay directory \"%"WS"\" " - "over non-directory", branch->file_name); - return WIMLIB_ERR_INVALID_OVERLAY; - } - - rb_root = &branch->d_inode->i_children; - while (rb_root->rb_node) { /* While @branch has children... */ - struct wim_dentry *child = rbnode_dentry(rb_root->rb_node); - /* Move @child to the directory @target */ - unlink_dentry(child); - if (!dentry_add_child(target, child)) { - /* Revert the change to avoid leaking the directory tree - * rooted at @child */ - dentry_add_child(branch, child); - ERROR("Overlay error: file \"%"WS"\" already exists " - "as a child of \"%"WS"\"", - child->file_name, target->file_name); - return WIMLIB_ERR_INVALID_OVERLAY; - } - } - free_dentry(branch); - return 0; - -} - -/* Attach or overlay a branch onto the WIM image. - * - * @root_p: - * Pointer to the root of the WIM image, or pointer to NULL if it has not - * been created yet. - * @branch - * Branch to add. - * @target_path: - * Path in the WIM image to add the branch, with leading and trailing - * slashes stripped. - */ -static int -attach_branch(struct wim_dentry **root_p, struct wim_dentry *branch, - tchar *target_path) -{ - tchar *slash; - struct wim_dentry *dentry, *parent, *target; - int ret; - - DEBUG("Attaching branch \"%"WS"\" => \"%"TS"\"", - branch->file_name, target_path); - - if (*target_path == T('\0')) { - /* Target: root directory */ - if (*root_p) { - /* Overlay on existing root */ - return do_overlay(*root_p, branch); - } else { - /* Set as root */ - *root_p = branch; - return 0; - } - } - - /* Adding a non-root branch. Create root if it hasn't been created - * already. */ - if (!*root_p) { - ret = new_filler_directory(T(""), root_p); - if (ret) - return ret; - } - - /* Walk the path to the branch, creating filler directories as needed. - * */ - parent = *root_p; - while ((slash = tstrchr(target_path, T('/')))) { - *slash = T('\0'); - dentry = get_dentry_child_with_name(parent, target_path); - if (!dentry) { - ret = new_filler_directory(target_path, &dentry); - if (ret) - return ret; - dentry_add_child(parent, dentry); - } - parent = dentry; - target_path = slash; - /* Skip over slashes. Note: this cannot overrun the length of - * the string because the last character cannot be a slash, as - * trailing slashes were tripped. */ - do { - ++target_path; - } while (*target_path == T('/')); - } - - /* If the target path already existed, overlay the branch onto it. - * Otherwise, set the branch as the target path. */ - target = get_dentry_child_with_utf16le_name(parent, branch->file_name, - branch->file_name_nbytes); - if (target) { - return do_overlay(target, branch); - } else { - dentry_add_child(parent, branch); - return 0; - } -} - -static int -canonicalize_pat(tchar **pat_p) -{ - tchar *pat = *pat_p; - - /* Turn all backslashes in the pattern into forward slashes. */ - zap_backslashes(pat); - - if (*pat != T('/') && *pat != T('\0') && *(pat + 1) == T(':')) { - /* Pattern begins with drive letter */ - if (*(pat + 2) != T('/')) { - /* Something like c:file, which is actually a path - * relative to the current working directory on the c: - * drive. We require paths with drive letters to be - * absolute. */ - ERROR("Invalid path \"%"TS"\"; paths including drive letters " - "must be absolute!", pat); - ERROR("Maybe try \"%"TC":/%"TS"\"?", - *pat, pat + 2); - return WIMLIB_ERR_INVALID_CAPTURE_CONFIG; - } - - WARNING("Pattern \"%"TS"\" starts with a drive letter, which is " - "being removed.", pat); - /* Strip the drive letter */ - pat += 2; - *pat_p = pat; - } - return 0; -} - -static int -canonicalize_pat_list(struct wimlib_pattern_list *pat_list) -{ - int ret = 0; - for (size_t i = 0; i < pat_list->num_pats; i++) { - ret = canonicalize_pat(&pat_list->pats[i]); - if (ret) - break; - } - return ret; -} - -static int -canonicalize_capture_config(struct wimlib_capture_config *config) -{ - int ret = canonicalize_pat_list(&config->exclusion_pats); - if (ret) - return ret; - return canonicalize_pat_list(&config->exclusion_exception_pats); + return add_cmds; } +/* Adds an image to the WIMStruct from multiple on-disk directory trees, or a + * NTFS volume. */ WIMLIBAPI int -wimlib_add_image_multisource(WIMStruct *w, - struct wimlib_capture_source *sources, +wimlib_add_image_multisource(WIMStruct *wim, + const struct wimlib_capture_source *sources, size_t num_sources, const tchar *name, - struct wimlib_capture_config *config, - int add_image_flags, + const struct wimlib_capture_config *config, + int add_flags, wimlib_progress_func_t progress_func) { - int (*capture_tree)(struct wim_dentry **, - const tchar *, - struct wim_lookup_table *, - struct sd_set *, - const struct wimlib_capture_config *, - int, - wimlib_progress_func_t, - void *); - void *extra_arg; - struct wim_dentry *root_dentry; - struct wim_dentry *branch; - struct wim_security_data *sd; - struct wim_image_metadata *imd; int ret; - struct sd_set sd_set; - - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NTFS) { -#ifdef WITH_NTFS_3G - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE) { - ERROR("Cannot dereference files when capturing directly from NTFS"); - return WIMLIB_ERR_INVALID_PARAM; - } - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) { - ERROR("Capturing UNIX owner and mode not supported " - "when capturing directly from NTFS"); - return WIMLIB_ERR_INVALID_PARAM; - } - capture_tree = build_dentry_tree_ntfs; - extra_arg = &w->ntfs_vol; -#else - ERROR("wimlib was compiled without support for NTFS-3g, so\n" - " cannot capture a WIM image directly from a NTFS volume!"); - return WIMLIB_ERR_UNSUPPORTED; -#endif - } else { - #ifdef __WIN32__ - capture_tree = win32_build_dentry_tree; - #else - capture_tree = unix_build_dentry_tree; - #endif - extra_arg = NULL; - } + struct wimlib_update_command *add_cmds; -#ifdef __WIN32__ - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) { - ERROR("Capturing UNIX-specific data is not supported on Windows"); - return WIMLIB_ERR_INVALID_PARAM; - } - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE) { - ERROR("Dereferencing symbolic links is not supported on Windows"); - return WIMLIB_ERR_INVALID_PARAM; - } -#endif - - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE) - add_image_flags |= WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE; - - if (!name || !*name) { - ERROR("Must specify a non-empty string for the image name"); - return WIMLIB_ERR_INVALID_PARAM; - } - - if (w->hdr.total_parts != 1) { - ERROR("Cannot add an image to a split WIM"); - return WIMLIB_ERR_SPLIT_UNSUPPORTED; - } - - if (wimlib_image_name_in_use(w, name)) { - ERROR("There is already an image named \"%"TS"\" in the WIM!", - name); - return WIMLIB_ERR_IMAGE_NAME_COLLISION; - } - - if (!config) { - DEBUG("Capture config not provided; using empty config"); - config = alloca(sizeof(*config)); - memset(config, 0, sizeof(*config)); - } + DEBUG("Adding image \"%"TS"\" from %zu sources (add_flags=%#x)", + name, num_sources, add_flags); - ret = canonicalize_capture_config(config); + /* Add the new image (initially empty) */ + ret = wimlib_add_empty_image(wim, name, NULL); if (ret) goto out; - DEBUG("Allocating security data"); - sd = CALLOC(1, sizeof(struct wim_security_data)); - if (!sd) { + /* Translate the "capture sources" into generic update commands. */ + add_cmds = capture_sources_to_add_cmds(sources, num_sources, + add_flags, config); + if (!add_cmds) { ret = WIMLIB_ERR_NOMEM; - goto out; - } - sd->total_length = 8; - sd->refcnt = 1; - - sd_set.sd = sd; - sd_set.rb_root.rb_node = NULL; - - DEBUG("Using %zu capture sources", num_sources); - canonicalize_sources_and_targets(sources, num_sources); - sort_sources(sources, num_sources); - ret = check_sorted_sources(sources, num_sources, add_image_flags); - if (ret) { - ret = WIMLIB_ERR_INVALID_PARAM; - goto out_free_security_data; - } - - DEBUG("Building dentry tree."); - root_dentry = NULL; - - for (size_t i = 0; i < num_sources; i++) { - int flags; - union wimlib_progress_info progress; - - DEBUG("Building dentry tree for source %zu of %zu " - "(\"%"TS"\" => \"%"TS"\")", i + 1, num_sources, - sources[i].fs_source_path, - sources[i].wim_target_path); - if (progress_func) { - memset(&progress, 0, sizeof(progress)); - progress.scan.source = sources[i].fs_source_path; - progress.scan.wim_target_path = sources[i].wim_target_path; - progress_func(WIMLIB_PROGRESS_MSG_SCAN_BEGIN, &progress); - } - config->_prefix = sources[i].fs_source_path; - config->_prefix_num_tchars = tstrlen(sources[i].fs_source_path); - flags = add_image_flags | WIMLIB_ADD_IMAGE_FLAG_SOURCE; - if (!*sources[i].wim_target_path) - flags |= WIMLIB_ADD_IMAGE_FLAG_ROOT; - ret = (*capture_tree)(&branch, - sources[i].fs_source_path, - w->lookup_table, - &sd_set, - config, - flags, - progress_func, extra_arg); - if (ret) { - ERROR("Failed to build dentry tree for `%"TS"'", - sources[i].fs_source_path); - goto out_free_dentry_tree; - } - if (branch) { - /* Use the target name, not the source name, for - * the root of each branch from a capture - * source. (This will also set the root dentry - * of the entire image to be unnamed.) */ - ret = set_dentry_name(branch, - path_basename(sources[i].wim_target_path)); - if (ret) - goto out_free_branch; - - ret = attach_branch(&root_dentry, branch, - sources[i].wim_target_path); - if (ret) - goto out_free_branch; - } - if (progress_func) - progress_func(WIMLIB_PROGRESS_MSG_SCAN_END, &progress); + goto out_delete_image; } - if (root_dentry == NULL) { - ret = new_filler_directory(T(""), &root_dentry); - if (ret) - goto out_free_dentry_tree; - } - - DEBUG("Calculating full paths of dentries."); - ret = for_dentry_in_tree(root_dentry, calculate_dentry_full_path, NULL); - if (ret) - goto out_free_dentry_tree; - - ret = add_new_dentry_tree(w, root_dentry, sd); - if (ret) - goto out_free_dentry_tree; - - imd = &w->image_metadata[w->hdr.image_count - 1]; - - ret = dentry_tree_fix_inodes(root_dentry, &imd->inode_list); + /* Delegate the work to wimlib_update_image(). */ + ret = wimlib_update_image(wim, wim->hdr.image_count, add_cmds, + num_sources, 0, progress_func); + FREE(add_cmds); if (ret) - goto out_destroy_imd; + goto out_delete_image; - DEBUG("Assigning hard link group IDs"); - assign_inode_numbers(&imd->inode_list); - - ret = xml_add_image(w, name); - if (ret) - goto out_destroy_imd; - - if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_BOOT) - wimlib_set_boot_idx(w, w->hdr.image_count); + /* Success; set boot index if requested. */ + if (add_flags & WIMLIB_ADD_FLAG_BOOT) + wim->hdr.boot_idx = wim->hdr.image_count; ret = 0; - goto out_destroy_sd_set; -out_destroy_imd: - destroy_image_metadata(&w->image_metadata[w->hdr.image_count - 1], - w->lookup_table); - w->hdr.image_count--; - goto out_destroy_sd_set; -out_free_branch: - free_dentry_tree(branch, w->lookup_table); -out_free_dentry_tree: - free_dentry_tree(root_dentry, w->lookup_table); -out_free_security_data: - free_security_data(sd); -out_destroy_sd_set: - destroy_sd_set(&sd_set); + goto out; +out_delete_image: + /* Roll back the image we added */ + put_image_metadata(wim->image_metadata[wim->hdr.image_count - 1], + wim->lookup_table); + xml_delete_image(&wim->wim_info, wim->hdr.image_count); + wim->hdr.image_count--; out: return ret; } +/* Adds an image to the WIMStruct from an on-disk directory tree or NTFS volume. */ WIMLIBAPI int -wimlib_add_image(WIMStruct *w, +wimlib_add_image(WIMStruct *wim, const tchar *source, const tchar *name, - struct wimlib_capture_config *config, - int add_image_flags, + const struct wimlib_capture_config *config, + int add_flags, wimlib_progress_func_t progress_func) { - if (!source || !*source) - return WIMLIB_ERR_INVALID_PARAM; - - tchar *fs_source_path = TSTRDUP(source); - int ret; - struct wimlib_capture_source capture_src = { - .fs_source_path = fs_source_path, - .wim_target_path = NULL, + /* Delegate the work to the more general wimlib_add_image_multisource(). + * */ + const struct wimlib_capture_source capture_src = { + .fs_source_path = (tchar*)source, + .wim_target_path = T(""), .reserved = 0, }; - ret = wimlib_add_image_multisource(w, &capture_src, 1, name, - config, add_image_flags, - progress_func); - FREE(fs_source_path); - return ret; + return wimlib_add_image_multisource(wim, &capture_src, 1, name, + config, add_flags, + progress_func); }