#include <dirent.h>
#include <string.h>
#include <errno.h>
+#include <unistd.h>
-static void destroy_image_metadata(struct image_metadata *imd,
- struct lookup_table *lt)
+/** Private flag: Used to mark that we currently adding the root directory of
+ * the WIM. */
+#define WIMLIB_ADD_IMAGE_FLAG_ROOT 0x80000000
+
+void destroy_image_metadata(struct image_metadata *imd,struct lookup_table *lt)
{
- free_dentry_tree(imd->root_dentry, lt, true);
+ free_dentry_tree(imd->root_dentry, lt);
free_security_data(imd->security_data);
+ free_link_group_table(imd->lgt);
/* Get rid of the lookup table entry for this image's metadata resource
* */
- lookup_table_remove(lt, imd->metadata_lte);
+ if (lt)
+ lookup_table_remove(lt, imd->metadata_lte);
}
/*
*
* @root: A dentry that has already been created for the root of the dentry
* tree.
- * @source_path: The path to the root of the tree on disk.
- * @root_stat: A pointer to a `struct stat' that contains the metadata for the
- * root of the tree on disk.
+ * @root_disk_path: The path to the root of the 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 file is already in the lookup table. These
* to the WIM may still occur later when trying to actually read
* the regular files in the tree into the WIM as file resources.
*/
-static int build_dentry_tree(struct dentry *root, const char *source_path,
- struct stat *root_stat,
- struct lookup_table* lookup_table)
+static int build_dentry_tree(struct dentry *root, const char *root_disk_path,
+ struct lookup_table* lookup_table,
+ int add_flags)
{
+ DEBUG("%s", root_disk_path);
+ struct stat root_stbuf;
int ret = 0;
+ int (*stat_fn)(const char *restrict, struct stat *restrict);
+
+ if (add_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE)
+ stat_fn = stat;
+ else
+ stat_fn = lstat;
+
+ if (add_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+ printf("Scanning `%s'\n", root_disk_path);
+
+
+ ret = (*stat_fn)(root_disk_path, &root_stbuf);
+ if (ret != 0) {
+ ERROR_WITH_ERRNO("Failed to stat `%s'", root_disk_path);
+ return WIMLIB_ERR_STAT;
+ }
+
+ if ((add_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) &&
+ !S_ISDIR(root_stbuf.st_mode)) {
+ ERROR("`%s' is not a directory", root_disk_path);
+ return WIMLIB_ERR_NOTDIR;
+ }
+ if (!S_ISREG(root_stbuf.st_mode) && !S_ISDIR(root_stbuf.st_mode)
+ && !S_ISLNK(root_stbuf.st_mode)) {
+ ERROR("`%s' is not a regular file, directory, or symbolic link.");
+ return WIMLIB_ERR_SPECIAL_FILE;
+ }
+ stbuf_to_dentry(&root_stbuf, root);
+ add_flags &= ~WIMLIB_ADD_IMAGE_FLAG_ROOT;
+ root->resolved = true;
- stbuf_to_dentry(root_stat, root);
if (dentry_is_directory(root)) {
/* Open the directory on disk */
DIR *dir;
struct dirent *p;
- struct stat child_stat;
struct dentry *child;
- dir = opendir(source_path);
+ dir = opendir(root_disk_path);
if (!dir) {
ERROR_WITH_ERRNO("Failed to open the directory `%s'",
- source_path);
+ root_disk_path);
return WIMLIB_ERR_OPEN;
}
/* Buffer for names of files in directory. */
- size_t len = strlen(source_path);
+ size_t len = strlen(root_disk_path);
char name[len + 1 + FILENAME_MAX + 1];
- memcpy(name, source_path, len);
+ memcpy(name, root_disk_path, len);
name[len] = '/';
/* Create a dentry for each entry in the directory on disk, and recurse
|| (p->d_name[1] == '.' && p->d_name[2] == '\0')))
continue;
strcpy(name + len + 1, p->d_name);
- if (stat(name, &child_stat) != 0) {
- ERROR_WITH_ERRNO("Cannot stat `%s'", name);
- ret = WIMLIB_ERR_STAT;
- break;
- }
child = new_dentry(p->d_name);
- if (!child) {
- ERROR("No memory to allocate new dentry");
+ if (!child)
return WIMLIB_ERR_NOMEM;
- }
- ret = build_dentry_tree(child, name, &child_stat,
- lookup_table);
+ ret = build_dentry_tree(child, name, lookup_table,
+ add_flags);
link_dentry(child, root);
if (ret != 0)
break;
}
closedir(dir);
+ } else if (dentry_is_symlink(root)) {
+ /* Archiving a symbolic link */
+ size_t symlink_buf_len;
+ char deref_name_buf[4096];
+ ssize_t deref_name_len;
+
+ deref_name_len = readlink(root_disk_path, deref_name_buf,
+ sizeof(deref_name_buf) - 1);
+ if (deref_name_len == -1) {
+ ERROR_WITH_ERRNO("Failed to read target of "
+ "symbolic link `%s'", root_disk_path);
+ return WIMLIB_ERR_READLINK;
+ }
+ deref_name_buf[deref_name_len] = '\0';
+ DEBUG("Read symlink `%s'", deref_name_buf);
+ ret = dentry_set_symlink(root, deref_name_buf,
+ lookup_table, NULL);
} else {
+ /* Regular file */
struct lookup_table_entry *lte;
+ u8 hash[SHA1_HASH_SIZE];
- /* For each non-directory, 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(source_path, root->hash);
+ /* 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(root_disk_path, hash);
if (ret != 0)
return ret;
- lte = lookup_resource(lookup_table, root->hash);
+ lte = __lookup_resource(lookup_table, hash);
if (lte) {
lte->refcnt++;
+ DEBUG("Add lte reference %u for `%s'", lte->refcnt,
+ root_disk_path);
} else {
- char *file_on_disk = STRDUP(source_path);
+ char *file_on_disk = STRDUP(root_disk_path);
if (!file_on_disk) {
ERROR("Failed to allocate memory for file path");
return WIMLIB_ERR_NOMEM;
return WIMLIB_ERR_NOMEM;
}
lte->file_on_disk = file_on_disk;
- lte->resource_entry.flags = 0;
- lte->refcnt = 1;
- lte->part_number = 1;
- lte->resource_entry.original_size = root_stat->st_size;
- lte->resource_entry.size = root_stat->st_size;
- memcpy(lte->hash, root->hash, WIM_HASH_SIZE);
+ lte->resource_location = RESOURCE_IN_FILE_ON_DISK;
+ lte->resource_entry.original_size = root_stbuf.st_size;
+ lte->resource_entry.size = root_stbuf.st_size;
+ copy_hash(lte->hash, hash);
lookup_table_insert(lookup_table, lte);
}
+ root->lte = lte;
}
return ret;
}
* entry is created that references the location of the file resource in the
* source WIM file through the other_wim_fp field of the lookup table entry.
*/
-static int add_lookup_table_entry_to_dest_wim(struct dentry *dentry, void *arg)
+static int add_lte_to_dest_wim(struct dentry *dentry, void *arg)
{
WIMStruct *src_wim, *dest_wim;
- struct lookup_table_entry *src_table_entry;
- struct lookup_table_entry *dest_table_entry;
src_wim = ((struct wim_pair*)arg)->src_wim;
dest_wim = ((struct wim_pair*)arg)->dest_wim;
- if (dentry_is_directory(dentry))
- return 0;
-
- src_table_entry = wim_lookup_resource(src_wim, dentry);
- if (!src_table_entry)
- return 0;
-
- dest_table_entry = wim_lookup_resource(dest_wim, dentry);
- if (dest_table_entry) {
- dest_table_entry->refcnt++;
- } else {
- dest_table_entry = new_lookup_table_entry();
- if (!dest_table_entry)
- return WIMLIB_ERR_NOMEM;
- dest_table_entry->other_wim_fp = src_wim->fp;
- dest_table_entry->other_wim_ctype =
- wimlib_get_compression_type(src_wim);
- dest_table_entry->refcnt = 1;
- memcpy(&dest_table_entry->resource_entry,
- &src_table_entry->resource_entry,
- sizeof(struct resource_entry));
- memcpy(dest_table_entry->hash, dentry->hash, WIM_HASH_SIZE);
- lookup_table_insert(dest_wim->lookup_table, dest_table_entry);
+ wimlib_assert(!dentry->resolved);
+
+ for (unsigned i = 0; i < (unsigned)dentry->num_ads + 1; i++) {
+ struct lookup_table_entry *src_lte, *dest_lte;
+ src_lte = dentry_stream_lte_unresolved(dentry, i,
+ src_wim->lookup_table);
+ if (!src_lte)
+ continue;
+ dest_lte = dentry_stream_lte_unresolved(dentry, i,
+ dest_wim->lookup_table);
+ if (dest_lte) {
+ dest_lte->refcnt++;
+ } else {
+ dest_lte = new_lookup_table_entry();
+ if (!dest_lte)
+ return WIMLIB_ERR_NOMEM;
+ dest_lte->resource_location = RESOURCE_IN_WIM;
+ dest_lte->wim = src_wim;
+ memcpy(&dest_lte->resource_entry,
+ &src_lte->resource_entry,
+ sizeof(struct resource_entry));
+ copy_hash(dest_lte->hash,
+ dentry_stream_hash_unresolved(dentry, i));
+ lookup_table_insert(dest_wim->lookup_table, dest_lte);
+ }
}
return 0;
}
struct image_metadata *imd;
struct image_metadata *new_imd;
struct wim_security_data *sd;
+ struct link_group_table *lgt;
DEBUG("Reallocating image metadata array for image_count = %u",
w->hdr.image_count + 1);
sd->refcnt = 1;
sd->total_length = 8;
+ lgt = new_link_group_table(9001);
+ if (!lgt)
+ goto out_free_security_data;
+
metadata_lte->resource_entry.flags = WIM_RESHDR_FLAG_METADATA;
- randomize_byte_array(metadata_lte->hash, WIM_HASH_SIZE);
+ random_hash(metadata_lte->hash);
lookup_table_insert(w->lookup_table, metadata_lte);
- w->hdr.image_count++;
+ new_imd = &imd[w->hdr.image_count];
- new_imd = &imd[w->hdr.image_count - 1];
- new_imd->metadata_lte = metadata_lte;
- new_imd->modified = true;
new_imd->root_dentry = root_dentry;
+ new_imd->metadata_lte = metadata_lte;
new_imd->security_data = sd;
+ new_imd->lgt = lgt;
+ new_imd->modified = true;
+
FREE(w->image_metadata);
w->image_metadata = imd;
+ w->hdr.image_count++;
/* Change the current image to the new one. */
return wimlib_select_image(w, w->hdr.image_count);
+out_free_security_data:
+ FREE(sd);
out_free_metadata_lte:
FREE(metadata_lte);
out_free_imd:
/* Cleaning up here on failure would be hard. For example, we could
- * fail to allocate memory in add_lookup_table_entry_to_dest_wim(),
+ * fail to allocate memory in add_lte_to_dest_wim(),
* leaving the lookup table entries in the destination WIM in an
* inconsistent state. Until these issues can be resolved,
* wimlib_export_image() is documented as leaving dest_wim is an
for_dentry_in_tree(root, increment_dentry_refcnt, NULL);
wims.src_wim = src_wim;
wims.dest_wim = dest_wim;
- ret = for_dentry_in_tree(root, add_lookup_table_entry_to_dest_wim, &wims);
+ ret = for_dentry_in_tree(root, add_lte_to_dest_wim, &wims);
if (ret != 0)
return ret;
ret = add_new_dentry_tree(dest_wim, root);
const char *flags_element, int flags)
{
struct dentry *root_dentry;
- struct stat root_stat;
struct image_metadata *imd;
int ret;
root_dentry = new_dentry("");
if (!root_dentry)
return WIMLIB_ERR_NOMEM;
- ret = calculate_dentry_full_path(root_dentry, NULL);
-
- if (ret != 0)
- goto out_free_dentry_tree;
-
- root_dentry->attributes |= FILE_ATTRIBUTE_DIRECTORY;
- /* Construct the dentry tree from the outside filesystem. */
- if (stat(dir, &root_stat) != 0) {
- ERROR_WITH_ERRNO("Failed to stat `%s'", dir);
- ret = WIMLIB_ERR_STAT;
- goto out_free_dentry_tree;
- }
- if (!S_ISDIR(root_stat.st_mode)) {
- ERROR("`%s' is not a directory", dir);
- ret = WIMLIB_ERR_NOTDIR;
- goto out_free_dentry_tree;
- }
DEBUG("Building dentry tree.");
- ret = build_dentry_tree(root_dentry, dir, &root_stat, w->lookup_table);
+ ret = build_dentry_tree(root_dentry, dir, w->lookup_table,
+ flags | WIMLIB_ADD_IMAGE_FLAG_ROOT);
if (ret != 0) {
ERROR("Failed to build dentry tree for `%s'", dir);
goto out_free_dentry_tree;
}
- DEBUG("Recalculating full paths of dentries.");
+ DEBUG("Calculating full paths of dentries.");
ret = for_dentry_in_tree(root_dentry, calculate_dentry_full_path, NULL);
if (ret != 0)
goto out_free_dentry_tree;
if (ret != 0)
goto out_free_dentry_tree;
+ DEBUG("Inserting dentries into hard link group table");
+ ret = for_dentry_in_tree(root_dentry, link_group_table_insert,
+ w->image_metadata[w->hdr.image_count - 1].lgt);
+ if (ret != 0)
+ goto out_destroy_imd;
+ DEBUG("Assigning hard link groups");
+ assign_link_groups(w->image_metadata[w->hdr.image_count - 1].lgt);
+
if (flags & WIMLIB_ADD_IMAGE_FLAG_BOOT)
wimlib_set_boot_idx(w, w->hdr.image_count);
out_destroy_imd:
destroy_image_metadata(&w->image_metadata[w->hdr.image_count - 1],
w->lookup_table);
+ w->hdr.image_count--;
return ret;
out_free_dentry_tree:
- free_dentry_tree(root_dentry, w->lookup_table, true);
+ free_dentry_tree(root_dentry, w->lookup_table);
return ret;
}
git://wimlib.net / wimlib / blobdiff