From 2ca991e1df186153fb2d260373170062fd75d1fe Mon Sep 17 00:00:00 2001
From: Michael Ossmann <mike@ossmann.com>
Date: Wed, 27 Jan 2021 12:12:45 -0700
Subject: [PATCH] Flush output streams. Do not fclose stdout/stdin.

---
 host/hackrf-tools/src/hackrf_sweep.c    |  1 +
 host/hackrf-tools/src/hackrf_transfer.c | 11 ++++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/host/hackrf-tools/src/hackrf_sweep.c b/host/hackrf-tools/src/hackrf_sweep.c
index fa8a7613..1eb9af45 100644
--- a/host/hackrf-tools/src/hackrf_sweep.c
+++ b/host/hackrf-tools/src/hackrf_sweep.c
@@ -757,6 +757,7 @@ int main(int argc, char** argv) {
 		fprintf(stderr, "hackrf_exit() done\n");
 	}
 
+	fflush(outfile);
 	if ( ( outfile != NULL ) && ( outfile != stdout ) ) {
 		fclose(outfile);
 		outfile = NULL;
diff --git a/host/hackrf-tools/src/hackrf_transfer.c b/host/hackrf-tools/src/hackrf_transfer.c
index 9c1f3426..fda6faf5 100644
--- a/host/hackrf-tools/src/hackrf_transfer.c
+++ b/host/hackrf-tools/src/hackrf_transfer.c
@@ -1141,9 +1141,14 @@ int main(int argc, char** argv) {
 			rewind(file);
 			fwrite(&wave_file_hdr, 1, sizeof(t_wav_file_hdr), file);
 		}	
-		fclose(file);
-		file = NULL;
-		fprintf(stderr, "fclose(file) done\n");
+		if (file != stdin) {
+			fflush(file);
+		}
+		if ((file != stdout) && (file != stdin)) {
+			fclose(file);
+			file = NULL;
+			fprintf(stderr, "fclose() done\n");
+		}
 	}
 	fprintf(stderr, "exit\n");
 	return exit_code;