Allow 0-byte files in full OTAs.
Currently, the writeProcessFunction fails when
there are zero bytes to write, potentially returning
errno from a previous operation, or hanging
indefinitely while it waits for a >0 result on a
write of size 0. This happens when the output
file is intended to be zero bytes in size.
Change-Id: Ib3cfcaf66d82942bc89e5f5c64697862403b38da
diff --git a/minzip/Zip.c b/minzip/Zip.c
index abc9890..5070104 100644
--- a/minzip/Zip.c
+++ b/minzip/Zip.c
@@ -698,7 +698,9 @@
void *cookie)
{
int fd = (int)(intptr_t)cookie;
-
+ if (dataLen == 0) {
+ return true;
+ }
ssize_t soFar = 0;
while (true) {
ssize_t n = write(fd, data+soFar, dataLen-soFar);