#include <dirent.h>
#include <string.h>
#include <errno.h>
+#include <unistd.h>
+
+/** Private flag: Used to mark that we currently adding the root directory of
+ * the WIM. */
+#define WIMLIB_ADD_IMAGE_FLAG_ROOT 0x80000000
static void destroy_image_metadata(struct image_metadata *imd,
struct lookup_table *lt)
* 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)
{
- int ret = 0;
+ DEBUG("`%s'", root_disk_path);
+ struct stat root_stbuf;
+ int ret;
+ int (*stat_fn)(const char *restrict, struct stat *restrict);
+
+ if (add_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE)
+ stat_fn = stat;
+ else
+ stat_fn = lstat;
+
+
+ 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;
+ }
+ stbuf_to_dentry(&root_stbuf, root);
+ add_flags &= ~WIMLIB_ADD_IMAGE_FLAG_ROOT;
- 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");
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 ret = readlink(root_disk_path, deref_name_buf,
+ sizeof(deref_name_buf) - 1);
+ if (ret == -1) {
+ ERROR_WITH_ERRNO("Failed to read target of "
+ "symbolic link `%s'", root_disk_path);
+ return WIMLIB_ERR_STAT;
+ }
+ deref_name_buf[ret] = '\0';
+ DEBUG("Read symlink `%s'", deref_name_buf);
+ void *symlink_buf = make_symlink_reparse_data_buf(deref_name_buf,
+ &symlink_buf_len);
+ if (!symlink_buf)
+ return WIMLIB_ERR_NOMEM;
+ DEBUG("Made symlink reparse data buf (len = %zu, name len = %zu)",
+ symlink_buf_len, ret);
+
+ u8 symlink_buf_hash[WIM_HASH_SIZE];
+ sha1_buffer(symlink_buf, symlink_buf_len, symlink_buf_hash);
+
+ ret = dentry_set_symlink_buf(root, symlink_buf_hash);
+
+ if (ret != 0) {
+ FREE(symlink_buf);
+ return ret;
+ }
+ DEBUG("Created symlink buf");
+
+ struct lookup_table_entry *lte;
+ struct lookup_table_entry *existing_lte;
+
+ existing_lte = lookup_resource(lookup_table, symlink_buf_hash);
+ if (existing_lte) {
+ existing_lte->refcnt++;
+ } else {
+ DEBUG("Creating new lookup table entry");
+ lte = new_lookup_table_entry();
+ if (!lte) {
+ FREE(symlink_buf);
+ return WIMLIB_ERR_NOMEM;
+ }
+ lte->symlink_buf = symlink_buf;
+ lte->resource_entry.original_size = symlink_buf_len;
+ lte->resource_entry.size = symlink_buf_len;
+ lte->is_symlink = true;
+ memcpy(lte->hash, symlink_buf_hash, WIM_HASH_SIZE);
+ lookup_table_insert(lookup_table, lte);
+ }
} else {
struct lookup_table_entry *lte;
* 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);
+ ret = sha1sum(root_disk_path, root->hash);
if (ret != 0)
return ret;
if (lte) {
lte->refcnt++;
} 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;
+ lte->resource_entry.original_size = root_stbuf.st_size;
+ lte->resource_entry.size = root_stbuf.st_size;
memcpy(lte->hash, root->hash, WIM_HASH_SIZE);
lookup_table_insert(lookup_table, lte);
}
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);
git://wimlib.net / wimlib / blobdiff