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-rw-r--r--updater/blockimg.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp
index f00bc4bff..0caa1acbd 100644
--- a/updater/blockimg.cpp
+++ b/updater/blockimg.cpp
@@ -151,6 +151,10 @@ static int read_all(int fd, uint8_t* data, size_t size) {
failure_type = kFreadFailure;
fprintf(stderr, "read failed: %s\n", strerror(errno));
return -1;
+ } else if (r == 0) {
+ failure_type = kFreadFailure;
+ fprintf(stderr, "read reached unexpected EOF.\n");
+ return -1;
}
so_far += r;
}