From d4522b8e9854178473adcea0fbb84f23f6e744bd Mon Sep 17 00:00:00 2001 From: Felipe Boeira Date: Tue, 8 Jan 2019 18:39:03 +0100 Subject: Initial commit --- src/tests/userprog/write-zero.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 src/tests/userprog/write-zero.c (limited to 'src/tests/userprog/write-zero.c') diff --git a/src/tests/userprog/write-zero.c b/src/tests/userprog/write-zero.c new file mode 100644 index 0000000..d8dac9b --- /dev/null +++ b/src/tests/userprog/write-zero.c @@ -0,0 +1,20 @@ +/* Try a 0-byte write, which should return 0 without writing + anything. */ + +#include +#include "tests/lib.h" +#include "tests/main.h" + +void +test_main (void) +{ + int handle, byte_cnt; + char buf; + + CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\""); + + buf = 123; + byte_cnt = write (handle, &buf, 0); + if (byte_cnt != 0) + fail("write() returned %d instead of 0", byte_cnt); +} -- cgit v1.2.1