From 875ce094cf2d421ba05bed6cfd6c948084d52abe Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Tue, 14 May 2019 17:46:18 +0200
Subject: dd: fix handling of short result of full_write(), closes 11711

$ dd bs=1G <sda1 of=/dev/sda1
dd: error writing '/dev/sda1': No space left on device
1+0 records in
0+0 records out
999292928 bytes (953.0MB) copied, 0.784617 seconds, 1.2GB/s

function                                             old     new   delta
write_and_stats                                       99     102      +3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 libbb/full_write.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'libbb')

diff --git a/libbb/full_write.c b/libbb/full_write.c
index 2b7983f4c..15766fc6c 100644
--- a/libbb/full_write.c
+++ b/libbb/full_write.c
@@ -11,7 +11,8 @@
 /*
  * Write all of the supplied buffer out to a file.
  * This does multiple writes as necessary.
- * Returns the amount written, or -1 on an error.
+ * Returns the amount written, or -1 if error was seen
+ * on the very first write.
  */
 ssize_t FAST_FUNC full_write(int fd, const void *buf, size_t len)
 {
-- 
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