From: Petr Štetiar <ynezz@true.cz>
Date: Thu, 17 Oct 2019 13:08:15 +0000 (+0200)
Subject: iron out extra compiler warnings
X-Git-Url: http://git.openwrt.org/feed/routing.git;openwrt-19.07?a=commitdiff_plain;h=e43042507b4f542e88e10ceaae2ca7bbaef6b1d2;p=project%2Ffwtool.git

iron out extra compiler warnings

 fwtool.c:216:3: error: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Werror=unused-result]
 fwtool.c:376:3: error: ignoring return value of ‘ftruncate’, declared with attribute warn_unused_result [-Werror=unused-result]

Signed-off-by: Petr Štetiar <ynezz@true.cz>
---

diff --git a/fwtool.c b/fwtool.c
index 89e8951..c059331 100644
--- a/fwtool.c
+++ b/fwtool.c
@@ -213,7 +213,9 @@ add_data(const char *name)
 
 	if (ret) {
 		fflush(firmware_file);
-		ftruncate(fileno(firmware_file), file_len);
+		ret = ftruncate(fileno(firmware_file), file_len);
+		if (ret < 0)
+			msg("Error during ftruncate: %m\n");
 	}
 
 	return ret;
@@ -374,8 +376,13 @@ extract_data(const char *name)
 		}
 	}
 
-	if (!ret && truncate_file)
-		ftruncate(fileno(firmware_file), dbuf.file_len);
+	if (!ret && truncate_file) {
+		ret = ftruncate(fileno(firmware_file), dbuf.file_len);
+		if (ret < 0) {
+			msg("Error during ftruncate: %m\n");
+			goto out;
+		}
+	}
 
 	if (write_truncated) {
 		if (dbuf.prev)