X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fupdate_image.c;h=f1776ec93cfb192cf1f5064c7a9a839f73eae915;hp=49ac6021a2e331545c1af31aa563d22597044e57;hb=4587a5137d9e06b2863e37006f1ebd042eefc0e3;hpb=161d3898359e3feb8c96ae220b376ef33c72a1d6 diff --git a/src/update_image.c b/src/update_image.c index 49ac6021..f1776ec9 100644 --- a/src/update_image.c +++ b/src/update_image.c @@ -21,34 +21,22 @@ * along with wimlib; if not, see http://www.gnu.org/licenses/. */ -#include "wimlib_internal.h" -#include "dentry.h" -#include "lookup_table.h" -#include "security.h" -#include "xml.h" -#include +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif -/* 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; +#include "wimlib/capture.h" +#include "wimlib/dentry.h" +#include "wimlib/error.h" +#include "wimlib/lookup_table.h" +#include "wimlib/metadata.h" +#ifdef WITH_NTFS_3G +# include "wimlib/ntfs_3g.h" /* for do_ntfs_umount() */ +#endif +#include "wimlib/paths.h" +#include "wimlib/xml.h" - DEBUG("Creating filler directory \"%"TS"\"", name); - ret = new_dentry_with_inode(name, &dentry); - if (ret) - goto out; - /* Leave the inode number as 0; this is allowed for non - * hard-linked files. */ - dentry->d_inode->i_resolved = 1; - dentry->d_inode->i_attributes = FILE_ATTRIBUTE_DIRECTORY; - *dentry_ret = dentry; - ret = 0; -out: - return ret; -} +#include /* Overlays @branch onto @target, both of which must be directories. */ static int @@ -66,6 +54,7 @@ do_overlay(struct wim_dentry *target, struct wim_dentry *branch) } rb_root = &branch->d_inode->i_children; + LIST_HEAD(moved_children); while (rb_root->rb_node) { /* While @branch has children... */ struct wim_dentry *child = rbnode_dentry(rb_root->rb_node); struct wim_dentry *existing; @@ -79,12 +68,17 @@ do_overlay(struct wim_dentry *target, struct wim_dentry *branch) int ret; ret = do_overlay(existing, child); if (ret) { - /* Overlay failed. Revert the change to avoid - * leaking the directory tree rooted at @child. - * */ + /* Overlay failed. Revert the changes. */ dentry_add_child(branch, child); + list_for_each_entry(child, &moved_children, tmp_list) + { + unlink_dentry(child); + dentry_add_child(branch, child); + } return ret; } + } else { + list_add(&child->tmp_list, &moved_children); } } free_dentry(branch); @@ -140,7 +134,7 @@ attach_branch(struct wim_dentry **root_p, struct wim_dentry *branch, /* Walk the path to the branch, creating filler directories as needed. * */ parent = *root_p; - while ((slash = tstrchr(target_path, T('/')))) { + while ((slash = tstrchr(target_path, WIM_PATH_SEPARATOR))) { *slash = T('\0'); dentry = get_dentry_child_with_name(parent, target_path); if (!dentry) { @@ -156,7 +150,7 @@ attach_branch(struct wim_dentry **root_p, struct wim_dentry *branch, * trailing slashes were tripped. */ do { ++target_path; - } while (*target_path == T('/')); + } while (*target_path == WIM_PATH_SEPARATOR); } /* If the target path already existed, overlay the branch onto it. @@ -180,8 +174,6 @@ execute_add_command(WIMStruct *wim, int add_flags; tchar *fs_source_path; tchar *wim_target_path; - struct wim_inode_table inode_table; - struct sd_set sd_set; struct wim_image_metadata *imd; struct list_head unhashed_streams; struct add_image_params params; @@ -207,7 +199,7 @@ execute_add_command(WIMStruct *wim, imd = wim->image_metadata[wim->current_image - 1]; - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_NTFS) { + if (add_flags & WIMLIB_ADD_FLAG_NTFS) { #ifdef WITH_NTFS_3G capture_tree = build_dentry_tree_ntfs; extra_arg = &ntfs_vol; @@ -229,21 +221,19 @@ execute_add_command(WIMStruct *wim, extra_arg = NULL; } - ret = init_inode_table(&inode_table, 9001); + ret = init_inode_table(¶ms.inode_table, 9001); if (ret) goto out; - ret = init_sd_set(&sd_set, imd->security_data); + ret = init_sd_set(¶ms.sd_set, imd->security_data); if (ret) goto out_destroy_inode_table; INIT_LIST_HEAD(&unhashed_streams); wim->lookup_table->unhashed_streams = &unhashed_streams; params.lookup_table = wim->lookup_table; - params.inode_table = &inode_table; - params.sd_set = &sd_set; params.config = config; - params.add_image_flags = add_flags; + params.add_flags = add_flags; params.progress_func = progress_func; params.extra_arg = extra_arg; @@ -253,11 +243,13 @@ execute_add_command(WIMStruct *wim, progress.scan.wim_target_path = wim_target_path; progress_func(WIMLIB_PROGRESS_MSG_SCAN_BEGIN, &progress); } - config->_prefix = fs_source_path; - config->_prefix_num_tchars = tstrlen(fs_source_path); + if (config) { + config->_prefix = fs_source_path; + config->_prefix_num_tchars = tstrlen(fs_source_path); + } if (wim_target_path[0] == T('\0')) - add_flags |= WIMLIB_ADD_IMAGE_FLAG_ROOT; + params.add_flags |= WIMLIB_ADD_FLAG_ROOT; ret = (*capture_tree)(&branch, fs_source_path, ¶ms); if (ret) { ERROR("Failed to build dentry tree for \"%"TS"\"", @@ -284,10 +276,10 @@ execute_add_command(WIMStruct *wim, #ifdef WITH_NTFS_3G imd->ntfs_vol = ntfs_vol; #endif - inode_table_prepare_inode_list(&inode_table, &imd->inode_list); + inode_table_prepare_inode_list(¶ms.inode_table, &imd->inode_list); ret = 0; rollback_sd = false; - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_RPFIX) + if (add_flags & WIMLIB_ADD_FLAG_RPFIX) wim->hdr.flags |= WIM_HDR_FLAG_RP_FIX; goto out_destroy_sd_set; out_ntfs_umount: @@ -297,9 +289,9 @@ out_ntfs_umount: #endif free_dentry_tree(branch, wim->lookup_table); out_destroy_sd_set: - destroy_sd_set(&sd_set, rollback_sd); + destroy_sd_set(¶ms.sd_set, rollback_sd); out_destroy_inode_table: - destroy_inode_table(&inode_table); + destroy_inode_table(¶ms.inode_table); out: return ret; } @@ -317,6 +309,8 @@ execute_delete_command(WIMStruct *wim, flags = delete_cmd->delete.delete_flags; wim_path = delete_cmd->delete.wim_path; + DEBUG("Deleting WIM path \"%"TS"\" (flags=%#x)", wim_path, flags); + tree = get_dentry(wim, wim_path); if (!tree) { /* Path to delete does not exist in the WIM. */ @@ -344,7 +338,15 @@ execute_delete_command(WIMStruct *wim, return 0; } -/* +static int +free_dentry_full_path(struct wim_dentry *dentry, void *_ignore) +{ + FREE(dentry->_full_path); + dentry->_full_path = NULL; + return 0; +} + +/* * Rename a file or directory in the WIM. * * This is also called from wimfs_rename() in the FUSE mount code. @@ -404,6 +406,8 @@ rename_wim_path(WIMStruct *wim, const tchar *from, const tchar *to) } unlink_dentry(src); dentry_add_child(parent_of_dst, src); + if (src->_full_path) + for_dentry_in_tree(src, free_dentry_full_path, NULL); return 0; } @@ -419,18 +423,25 @@ execute_rename_command(WIMStruct *wim, ret = rename_wim_path(wim, rename_cmd->rename.wim_source_path, rename_cmd->rename.wim_target_path); if (ret) { + ret = -ret; + errno = ret; + ERROR_WITH_ERRNO("Can't rename \"%"TS"\" to \"%"TS"\"", + rename_cmd->rename.wim_source_path, + rename_cmd->rename.wim_target_path); switch (ret) { - case -ENOMEM: + case ENOMEM: ret = WIMLIB_ERR_NOMEM; break; - case -ENOTDIR: + case ENOTDIR: ret = WIMLIB_ERR_NOTDIR; break; - case -ENOTEMPTY: - case -EISDIR: + case ENOTEMPTY: + ret = WIMLIB_ERR_NOTEMPTY; + break; + case EISDIR: ret = WIMLIB_ERR_IS_DIRECTORY; break; - case -ENOENT: + case ENOENT: default: ret = WIMLIB_ERR_PATH_DOES_NOT_EXIST; break; @@ -450,7 +461,8 @@ update_op_to_str(int op) case WIMLIB_UPDATE_OP_RENAME: return T("rename"); default: - return T("???"); + wimlib_assert(0); + return NULL; } } @@ -458,31 +470,45 @@ static int execute_update_commands(WIMStruct *wim, const struct wimlib_update_command *cmds, size_t num_cmds, + int update_flags, wimlib_progress_func_t progress_func) { int ret = 0; + union wimlib_progress_info info; + info.update.completed_commands = 0; + info.update.total_commands = num_cmds; for (size_t i = 0; i < num_cmds; i++) { DEBUG("Executing update command %zu of %zu (op=%"TS")", i + 1, num_cmds, update_op_to_str(cmds[i].op)); + if (update_flags & WIMLIB_UPDATE_FLAG_SEND_PROGRESS && + progress_func) + { + info.update.command = &cmds[i]; + (*progress_func)(WIMLIB_PROGRESS_MSG_UPDATE_BEGIN_COMMAND, + &info); + } switch (cmds[i].op) { case WIMLIB_UPDATE_OP_ADD: ret = execute_add_command(wim, &cmds[i], progress_func); break; case WIMLIB_UPDATE_OP_DELETE: ret = execute_delete_command(wim, &cmds[i]); - if (ret == 0) - wim->deletion_occurred = 1; break; case WIMLIB_UPDATE_OP_RENAME: ret = execute_rename_command(wim, &cmds[i]); break; default: - ret = WIMLIB_ERR_INVALID_PARAM; - break; + wimlib_assert(0); } if (ret) break; - wim->image_metadata[wim->current_image - 1]->modified = 1; + info.update.completed_commands++; + if (update_flags & WIMLIB_UPDATE_FLAG_SEND_PROGRESS && + progress_func) + { + (*progress_func)(WIMLIB_PROGRESS_MSG_UPDATE_END_COMMAND, + &info); + } } return ret; } @@ -492,64 +518,72 @@ check_add_command(struct wimlib_update_command *cmd, const struct wim_header *hdr) { int add_flags = cmd->add.add_flags; + + /* Are we adding the entire image or not? An empty wim_target_path + * indicates that the tree we're adding is to be placed in the root of + * the image. We consider this to be capturing the entire image, + * although it could potentially be an overlay on an existing root as + * well. */ bool is_entire_image = cmd->add.wim_target_path[0] == T('\0'); - int ret; + #ifdef __WIN32__ - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_NTFS) { + /* Check for flags not supported on Windows */ + if (add_flags & WIMLIB_ADD_FLAG_NTFS) { ERROR("wimlib was compiled without support for NTFS-3g, so"); ERROR("we cannot capture a WIM image directly from a NTFS volume"); return WIMLIB_ERR_UNSUPPORTED; } - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) { + if (add_flags & WIMLIB_ADD_FLAG_UNIX_DATA) { ERROR("Capturing UNIX-specific data is not supported on Windows"); - return WIMLIB_ERR_INVALID_PARAM; + return WIMLIB_ERR_UNSUPPORTED; } - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE) { + if (add_flags & WIMLIB_ADD_FLAG_DEREFERENCE) { ERROR("Dereferencing symbolic links is not supported on Windows"); - return WIMLIB_ERR_INVALID_PARAM; + return WIMLIB_ERR_UNSUPPORTED; } #endif - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE) - add_flags |= WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE; + /* VERBOSE implies EXCLUDE_VERBOSE */ + if (add_flags & WIMLIB_ADD_FLAG_VERBOSE) + add_flags |= WIMLIB_ADD_FLAG_EXCLUDE_VERBOSE; - if ((add_flags & (WIMLIB_ADD_IMAGE_FLAG_RPFIX | - WIMLIB_ADD_IMAGE_FLAG_NORPFIX)) == - (WIMLIB_ADD_IMAGE_FLAG_RPFIX | - WIMLIB_ADD_IMAGE_FLAG_NORPFIX)) + /* Check for contradictory reparse point fixup flags */ + if ((add_flags & (WIMLIB_ADD_FLAG_RPFIX | + WIMLIB_ADD_FLAG_NORPFIX)) == + (WIMLIB_ADD_FLAG_RPFIX | + WIMLIB_ADD_FLAG_NORPFIX)) { ERROR("Cannot specify RPFIX and NORPFIX flags " "at the same time!"); return WIMLIB_ERR_INVALID_PARAM; } - if ((add_flags & (WIMLIB_ADD_IMAGE_FLAG_RPFIX | - WIMLIB_ADD_IMAGE_FLAG_NORPFIX)) == 0) + /* Set default behavior on reparse point fixups if requested */ + if ((add_flags & (WIMLIB_ADD_FLAG_RPFIX | + WIMLIB_ADD_FLAG_NORPFIX)) == 0) { /* Do reparse-point fixups by default if we are capturing an * entire image and either the header flag is set from previous * images, or if this is the first image being added. */ if (is_entire_image && ((hdr->flags & WIM_HDR_FLAG_RP_FIX) || hdr->image_count == 1)) - add_flags |= WIMLIB_ADD_IMAGE_FLAG_RPFIX; + add_flags |= WIMLIB_ADD_FLAG_RPFIX; } if (!is_entire_image) { - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_NTFS) { + if (add_flags & WIMLIB_ADD_FLAG_NTFS) { ERROR("Cannot add directly from a NTFS volume " "when not capturing a full image!"); return WIMLIB_ERR_INVALID_PARAM; } - if (add_flags & WIMLIB_ADD_IMAGE_FLAG_RPFIX) { + if (add_flags & WIMLIB_ADD_FLAG_RPFIX) { ERROR("Cannot do reparse point fixups when " "not capturing a full image!"); return WIMLIB_ERR_INVALID_PARAM; } } - ret = canonicalize_capture_config(cmd->add.config); - if (ret) - return ret; + /* We may have modified the add flags. */ cmd->add.add_flags = add_flags; return 0; } @@ -582,12 +616,12 @@ check_update_commands(struct wimlib_update_command *cmds, size_t num_cmds, } -extern void +static void free_update_commands(struct wimlib_update_command *cmds, size_t num_cmds) { if (cmds) { for (size_t i = 0; i < num_cmds; i++) { - switch (cmds->op) { + switch (cmds[i].op) { case WIMLIB_UPDATE_OP_ADD: FREE(cmds[i].add.fs_source_path); FREE(cmds[i].add.wim_target_path); @@ -630,10 +664,10 @@ copy_update_commands(const struct wimlib_update_command *cmds, !cmds_copy[i].add.wim_target_path) goto oom; if (cmds[i].add.config) { - cmds_copy[i].add.config = - copy_capture_config(cmds[i].add.config); - if (!cmds_copy[i].add.config) - goto oom; + ret = copy_and_canonicalize_capture_config(cmds[i].add.config, + &cmds_copy[i].add.config); + if (ret) + goto err; } cmds_copy[i].add.add_flags = cmds[i].add.add_flags; break; @@ -670,6 +704,9 @@ err: goto out; } +/* + * Entry point for making a series of updates to a WIM image. + */ WIMLIBAPI int wimlib_update_image(WIMStruct *wim, int image, @@ -680,40 +717,61 @@ wimlib_update_image(WIMStruct *wim, { int ret; struct wimlib_update_command *cmds_copy; + bool deletion_requested = false; DEBUG("Updating image %d with %zu commands", image, num_cmds); - if (wim->hdr.total_parts != 1) { - ERROR("Cannot update a split WIM!"); - ret = WIMLIB_ERR_SPLIT_UNSUPPORTED; + for (size_t i = 0; i < num_cmds; i++) + if (cmds[i].op == WIMLIB_UPDATE_OP_DELETE) + deletion_requested = true; + + if (deletion_requested) + ret = can_delete_from_wim(wim); + else + ret = can_modify_wim(wim); + + if (ret) goto out; - } + /* Load the metadata for the image to modify (if not loaded already) */ ret = select_wim_image(wim, image); if (ret) goto out; - DEBUG("Selected image %d for update", image); - + /* Short circuit a successful return if no commands were specified. + * Avoids problems with trying to allocate 0 bytes of memory. */ if (num_cmds == 0) goto out; DEBUG("Preparing %zu update commands", num_cmds); + /* Make a copy of the update commands, in the process doing certain + * canonicalizations on paths (e.g. translating backslashes to forward + * slashes). This is done to avoid modifying the caller's copy of the + * commands. */ ret = copy_update_commands(cmds, num_cmds, &cmds_copy); if (ret) goto out; + /* Perform additional checks on the update commands before we execute + * them. */ ret = check_update_commands(cmds_copy, num_cmds, &wim->hdr); if (ret) goto out_free_cmds_copy; + /* Actually execute the update commands. */ DEBUG("Executing %zu update commands", num_cmds); - - ret = execute_update_commands(wim, cmds_copy, num_cmds, progress_func); + ret = execute_update_commands(wim, cmds_copy, num_cmds, update_flags, + progress_func); if (ret) goto out_free_cmds_copy; - xml_update_image_info(wim, wim->current_image); + + wim->image_metadata[image - 1]->modified = 1; + + /* Statistics about the WIM image, such as the numbers of files and + * directories, may have changed. Call xml_update_image_info() to + * recalculate these statistics. */ + xml_update_image_info(wim, image); out_free_cmds_copy: free_update_commands(cmds_copy, num_cmds); out: