[PATCH 1/2] cyclictest: fix growing shm stat file

[Lukas Beckmann <lbckmnn@mailbox.org>]

On a received USR2 signal, the current statistics are written to a file
in shared memory. Before that happens, it is truncated to zero to clear
it.

However, currently the shm file keeps growing with each received signal
because the seek pointer is not updated by ftruncate.

This is fixed by calling fseek after truncating.

Signed-off-by: Lukas Beckmann <lbckmnn@mailbox.org>
---
 src/cyclictest/cyclictest.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c
index 191945e..960c905 100644
--- a/src/cyclictest/cyclictest.c
+++ b/src/cyclictest/cyclictest.c
@@ -1472,6 +1472,7 @@ static void sighand(int sig)
 			return;
 		}
 		rstat_ftruncate(rstat_fd, 0);
+		lseek(rstat_fd, 0, SEEK_SET);
 		quiet = 0;
 		dprintf(rstat_fd, "#---------------------------\n");
 		dprintf(rstat_fd, "# cyclictest current status:\n");
-- 
2.53.0