From d159b5cf03212e9ecb848dd7eef5edc3ba1a7bba Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Sun, 30 Apr 2023 03:24:14 -0400
Subject: ustar: Add function to write trailer

---
(limited to 'src')

diff --git a/src/ustar.c b/src/ustar.c
index 7fa64e2..e1771c3 100644
--- a/src/ustar.c
+++ b/src/ustar.c
@@ -351,6 +351,19 @@ opkg_opk_ustar_write_data(struct opkg_opk_ustar *ustar, size_t size)
 	return OPKG_OPK_OK;
 }
 
+int
+opkg_opk_ustar_write_trailer(struct opkg_opk_ustar *ustar)
+{
+	memset(ustar->record, 0, OPKG_OPK_USTAR_RECORD_SIZE);
+	if (opkg_opk_gzip_write(ustar->gzip, ustar->record,
+				OPKG_OPK_USTAR_RECORD_SIZE, 0) != OPKG_OPK_OK ||
+			opkg_opk_gzip_write(ustar->gzip, ustar->record,
+				OPKG_OPK_USTAR_RECORD_SIZE, 0) != OPKG_OPK_OK) {
+		return OPKG_OPK_ERROR;
+	}
+	return OPKG_OPK_OK;
+}
+
 void
 opkg_opk_ustar_free(struct opkg_opk_ustar *ustar)
 {
diff --git a/src/ustar.h b/src/ustar.h
index 4f6b79b..679f8ae 100644
--- a/src/ustar.h
+++ b/src/ustar.h
@@ -99,6 +99,9 @@ opkg_opk_ustar_get_buffer(struct opkg_opk_ustar *ustar, char **buffer,
 int
 opkg_opk_ustar_write_data(struct opkg_opk_ustar *ustar, size_t size);
 
+int
+opkg_opk_ustar_write_trailer(struct opkg_opk_ustar *ustar);
+
 /*
  * Frees an archive structure.
  * Parameters:
--
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