libtar: add a dir_iterator_t implementation for tar files

The existing istream_t wrapper is mered into this one as well, we
can open the files via the iterators open_file_ro function. Unit
tests and tar2sqfs are modified accordingly.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

3 files changed, 31 insertions, 0 deletions

diff --git a/lib/io/src/unix/dir_iterator.c b/lib/io/src/unix/dir_iterator.c
index fb7edae..7154ec9 100644
--- a/lib/io/src/unix/dir_iterator.c
+++ b/lib/io/src/unix/dir_iterator.c
@@ -118,6 +118,9 @@ static int dir_next(dir_iterator_t *base, dir_entry_t **out)
 	decoded->gid = it->sb.st_gid;
 	decoded->mode = it->sb.st_mode;
 
+	if (S_ISREG(it->sb.st_mode))
+		decoded->size = it->sb.st_size;
+
 	if (decoded->dev != it->device)
 		decoded->flags |= DIR_ENTRY_FLAG_MOUNT_POINT;
 
diff --git a/lib/io/src/win32/dir_iterator.c b/lib/io/src/win32/dir_iterator.c
index c9defc7..f504b65 100644
--- a/lib/io/src/win32/dir_iterator.c
+++ b/lib/io/src/win32/dir_iterator.c
@@ -91,6 +91,9 @@ static int dir_iterator_next(dir_iterator_t *it, dir_entry_t **out)
 		ent->mode = S_IFDIR | 0755;
 	} else {
 		ent->mode = S_IFREG | 0644;
+		ent->size = w32->ent.nFileSizeHigh;
+		ent->size <<= 32UL;
+		ent->size |= w32->ent.nFileSizeLow;
 	}
 
 	ent->mtime = w32time_to_unix(&(w32->ent.ftLastWriteTime));
diff --git a/lib/io/src/xattr.c b/lib/io/src/xattr.c
index dd9a338..85b7e53 100644
--- a/lib/io/src/xattr.c
+++ b/lib/io/src/xattr.c
@@ -28,6 +28,31 @@ dir_entry_xattr_t *dir_entry_xattr_create(const char *key, const sqfs_u8 *value,
 	return out;
 }
 
+dir_entry_xattr_t *dir_entry_xattr_list_copy(const dir_entry_xattr_t *list)
+{
+	dir_entry_xattr_t *new, *copy = NULL, *copy_last = NULL;
+	const dir_entry_xattr_t *it;
+
+	for (it = list; it != NULL; it = it->next) {
+		new = dir_entry_xattr_create(it->key, it->value,
+					     it->value_len);
+		if (new == NULL) {
+			dir_entry_xattr_list_free(copy);
+			return NULL;
+		}
+
+		if (copy_last == NULL) {
+			copy = new;
+			copy_last = new;
+		} else {
+			copy_last->next = new;
+			copy_last = new;
+		}
+	}
+
+	return copy;
+}
+
 void dir_entry_xattr_list_free(dir_entry_xattr_t *list)
 {
 	dir_entry_xattr_t *old;