/* Unlink @subject from the WIM image. * * This is the journaled version, so it can be rolled back. */ static int journaled_unlink(struct update_command_journal *j, struct wim_dentry *subject) { struct wim_dentry *parent; struct update_primitive prim; int ret; if (dentry_is_root(subject)) parent = NULL; else parent = subject->d_parent; prim.type = UNLINK_DENTRY; prim.link.subject = subject; prim.link.parent = parent; ret = record_update_primitive(j, prim); if (ret) return ret; do_unlink(subject, parent, j->root_p); list_add(&subject->tmp_list, &j->orphans); subject->is_orphan = 1; return 0; }
/* Is @d1 a (possibly nonproper) ancestor of @d2? */ static bool is_ancestor(const struct wim_dentry *d1, const struct wim_dentry *d2) { for (;;) { if (d2 == d1) return true; if (dentry_is_root(d2)) return false; d2 = d2->d_parent; } }
/* Returns the number of characters needed to represent the path to the * specified @dentry when extracted, not including the null terminator or the * path to the target directory itself. */ static size_t unix_dentry_path_length(const struct wim_dentry *dentry) { size_t len = 0; const struct wim_dentry *d; d = dentry; do { len += d->d_extraction_name_nchars + 1; d = d->d_parent; } while (!dentry_is_root(d) && will_extract_dentry(d)); return len; }
static int init_wimlib_dentry(struct wimlib_dir_entry *wdentry, struct wim_dentry *dentry, WIMStruct *wim, int flags) { int ret; size_t dummy; const struct wim_inode *inode = dentry->d_inode; const struct wim_inode_stream *strm; struct wimlib_unix_data unix_data; const void *object_id; u32 object_id_len; ret = utf16le_get_tstr(dentry->d_name, dentry->d_name_nbytes, &wdentry->filename, &dummy); if (ret) return ret; ret = utf16le_get_tstr(dentry->d_short_name, dentry->d_short_name_nbytes, &wdentry->dos_name, &dummy); if (ret) return ret; ret = calculate_dentry_full_path(dentry); if (ret) return ret; wdentry->full_path = dentry->d_full_path; for (struct wim_dentry *d = dentry; !dentry_is_root(d); d = d->d_parent) wdentry->depth++; if (inode_has_security_descriptor(inode)) { struct wim_security_data *sd; sd = wim_get_current_security_data(wim); wdentry->security_descriptor = sd->descriptors[inode->i_security_id]; wdentry->security_descriptor_size = sd->sizes[inode->i_security_id]; } wdentry->reparse_tag = inode->i_reparse_tag; wdentry->num_links = inode->i_nlink; wdentry->attributes = inode->i_attributes; wdentry->hard_link_group_id = inode->i_ino; wdentry->creation_time = wim_timestamp_to_timespec(inode->i_creation_time); wdentry->last_write_time = wim_timestamp_to_timespec(inode->i_last_write_time); wdentry->last_access_time = wim_timestamp_to_timespec(inode->i_last_access_time); if (inode_get_unix_data(inode, &unix_data)) { wdentry->unix_uid = unix_data.uid; wdentry->unix_gid = unix_data.gid; wdentry->unix_mode = unix_data.mode; wdentry->unix_rdev = unix_data.rdev; } object_id = inode_get_object_id(inode, &object_id_len); if (unlikely(object_id != NULL)) { memcpy(&wdentry->object_id, object_id, min(object_id_len, sizeof(wdentry->object_id))); } strm = inode_get_unnamed_stream(inode, get_default_stream_type(inode)); if (strm) { ret = stream_to_wimlib_stream_entry(inode, strm, &wdentry->streams[0], wim->blob_table, flags); if (ret) return ret; } for (unsigned i = 0; i < inode->i_num_streams; i++) { strm = &inode->i_streams[i]; if (!stream_is_named_data_stream(strm)) continue; wdentry->num_named_streams++; ret = stream_to_wimlib_stream_entry(inode, strm, &wdentry->streams[ wdentry->num_named_streams], wim->blob_table, flags); if (ret) return ret; } return 0; }