X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fresource.c;h=dc5b7a806fe24d3bb61aad2bb5528ffd787e2a18;hp=5237b88a37fd646613770df5768e3f56625cd2ab;hb=7ce0d372fae285051cbc9740c9fa316d22465d9d;hpb=f3e97b29c4a8c564d54b0fd11cd43a9b4cd6a8ad

diff --git a/src/resource.c b/src/resource.c
index 5237b88a..dc5b7a80 100644
--- a/src/resource.c
+++ b/src/resource.c
@@ -593,7 +593,11 @@ read_partial_wim_resource(const struct wim_lookup_table_entry *lte,
 	}
 	goto out_release_fp;
 read_error:
-	ERROR_WITH_ERRNO("Error reading data from WIM");
+	if (ferror(wim_fp)) {
+		ERROR_WITH_ERRNO("Error reading data from WIM");
+	} else {
+		ERROR("Unexpected EOF in WIM!");
+	}
 	ret = WIMLIB_ERR_READ;
 out_release_fp:
 	if (flags & WIMLIB_RESOURCE_FLAG_THREADSAFE_READ)
@@ -838,6 +842,28 @@ extract_wim_resource_to_fd(const struct wim_lookup_table_entry *lte,
 	return extract_wim_resource(lte, size, extract_wim_chunk_to_fd, &fd);
 }
 
+
+static int
+sha1_chunk(const void *buf, size_t len, void *ctx)
+{
+	sha1_update(ctx, buf, len);
+	return 0;
+}
+
+int
+sha1_resource(struct wim_lookup_table_entry *lte)
+{
+	int ret;
+	SHA_CTX sha_ctx;
+
+	sha1_init(&sha_ctx);
+	ret = read_resource_prefix(lte, wim_resource_size(lte),
+				   sha1_chunk, &sha_ctx, 0);
+	if (ret == 0)
+		sha1_final(lte->hash, &sha_ctx);
+	return ret;
+}
+
 /*
  * Copies the file resource specified by the lookup table entry @lte from the
  * input WIM to the output WIM that has its FILE * given by