+const char *upkg_get_name(struct upkg *pub, unsigned long idx)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)pub;
+
+ if (idx >= pkg->pub.name_count)
+ return 0;
+ return pkg->names[idx].name;
+}
+
+long upkg_export_find(struct upkg *pub, long parent_index, const char *name)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)pub;
+ struct upkg_export *parent = NULL;
+
+ if (parent_index >= 0) {
+ if (parent_index >= pkg->pub.export_count)
+ return -1;
+ parent = &pkg->exports[parent_index].pub;
+ }
+
+ for (unsigned long i = 0; i < pkg->pub.export_count; i++) {
+ struct upkg_export_priv *e = &pkg->exports[i];
+
+ if (e->pub.parent == parent && !strcmp(e->pub.name, name))
+ return i;
+ }
+
+ return -1;
+}
+
+const struct upkg_export *upkg_get_export(struct upkg *pub, unsigned long idx)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)pub;
+
+ if (idx < pkg->pub.export_count)
+ return &pkg->exports[idx].pub;
+ return NULL;
+}
+
+const struct upkg_import *upkg_get_import(struct upkg *pub, unsigned long idx)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)pub;
+
+ if (idx < pkg->pub.import_count)
+ return &pkg->imports[idx];
+ return NULL;
+}
+
+struct upkg_file *upkg_export_open(struct upkg *pub, unsigned long idx)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)pub;
+ struct upkg_file *f;
+
+ if (idx >= pkg->pub.export_count)
+ return NULL;
+
+ f = malloc(sizeof *f);
+ if (f == NULL)
+ return NULL;
+
+ *f = (struct upkg_file) {
+ .pkg = pub,
+ .base = pkg->exports[idx].offset,
+ .len = pkg->exports[idx].size,
+ .name = pkg->exports[idx].pub.name,
+ };
+
+ return f;
+}
+
+void upkg_export_close(struct upkg_file *f)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)f->pkg;
+
+ if (pkg->last_file == f)
+ pkg->last_file = NULL;
+ free(f);
+}
+
+long upkg_export_tell(struct upkg_file *f)
+{
+ return f->offset;
+}
+
+int upkg_export_seek(struct upkg_file *f, long offset, int whence)
+{
+ struct upkg_priv *pkg = (struct upkg_priv *)f->pkg;
+ const struct upkg_file_ops *fops = pkg->fops;
+ int rc = EOF;
+
+ switch (whence) {
+ case SEEK_CUR:
+ offset = f->offset + offset;
+ case SEEK_SET:
+ if (offset < 0 || offset > f->len)
+ return EOF;
+ rc = fops->seek(pkg->f, f->base + offset, SEEK_SET);
+ break;
+ case SEEK_END:
+ offset = -offset;
+ if (offset < 0 || offset > f->len)
+ return EOF;
+ offset = f->len - offset;
+ rc = fops->seek(pkg->f, f->base + offset, SEEK_SET);
+ break;
+ }
+
+ if (rc == 0) {
+ pkg->last_file = f;
+ f->offset = offset;
+ f->eof = 0;
+ } else if (pkg->last_file == f) {
+ pkg->last_file = NULL;
+ }
+
+ return rc;
+}
+
+size_t upkg_export_read(struct upkg_file *f, void *buf, size_t n)