From 980784c1917f19bfd2e9b11faca76d14e8589daa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= <debian@jff-webhosting.net>
Date: Sat, 11 Mar 2023 18:24:13 +0100
Subject: New upstream version 4.12

---
 src/io.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

(limited to 'src/io.c')

diff --git a/src/io.c b/src/io.c
index 720a9c5..a6c0a68 100644
--- a/src/io.c
+++ b/src/io.c
@@ -11,6 +11,7 @@
 #	include "config.h"
 #endif
 #include <sys/stat.h>
+#include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <limits.h>
@@ -594,39 +595,37 @@ EXPORT_SYMBOL int HX_rrmdir(const char *dir)
 EXPORT_SYMBOL ssize_t HXio_fullread(int fd, void *vbuf, size_t size)
 {
 	char *buf = vbuf;
-	size_t done = 0;
 	if (size > SSIZE_MAX)
 		size = SSIZE_MAX;
 
-	while (done < size) {
-		ssize_t ret = read(fd, buf, size - done);
+	while (size > 0) {
+		ssize_t ret = read(fd, buf, size);
 		if (ret < 0)
 			return ret;
 		else if (ret == 0)
 			break;
-		done += ret;
 		buf += ret;
+		size -= ret;
 	}
-	return done;
+	return buf - static_cast(char *, vbuf);
 }
 
 EXPORT_SYMBOL ssize_t HXio_fullwrite(int fd, const void *vbuf, size_t size)
 {
 	const char *buf = vbuf;
-	size_t done = 0;
 	if (size > SSIZE_MAX)
 		size = SSIZE_MAX;
 
-	while (done < size) {
-		ssize_t ret = write(fd, buf, size - done);
+	while (size > 0) {
+		ssize_t ret = write(fd, buf, size);
 		if (ret < 0)
 			return ret;
 		else if (ret == 0)
 			break;
-		done += ret;
 		buf += ret;
+		size -= ret;
 	}
-	return done;
+	return buf - static_cast(const char *, vbuf);
 }
 
 #if __linux__
-- 
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