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-rw-r--r--libbb/full_write.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/libbb/full_write.c b/libbb/full_write.c
index 7bbacb8..7503c8b 100644
--- a/libbb/full_write.c
+++ b/libbb/full_write.c
@@ -24,8 +24,14 @@ ssize_t full_write(int fd, const void *buf, size_t len)
while (len) {
cc = safe_write(fd, buf, len);
- if (cc < 0)
+ if (cc < 0) {
+ if (total) {
+ /* we already wrote some! */
+ /* user can do another write to know the error code */
+ return total;
+ }
return cc; /* write() returns -1 on failure. */
+ }
total += cc;
buf = ((const char *)buf) + cc;