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/multi-child-fd.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 src/tests/userprog/multi-child-fd.c (limited to 'src/tests/userprog/multi-child-fd.c') diff --git a/src/tests/userprog/multi-child-fd.c b/src/tests/userprog/multi-child-fd.c new file mode 100644 index 0000000..48de4b4 --- /dev/null +++ b/src/tests/userprog/multi-child-fd.c @@ -0,0 +1,25 @@ +/* Opens a file and then runs a subprocess that tries to close + the file. (Pintos does not have inheritance of file handles, + so this must fail.) The parent process then attempts to use + the file handle, which must succeed. */ + +#include +#include +#include "tests/userprog/sample.inc" +#include "tests/lib.h" +#include "tests/main.h" + +void +test_main (void) +{ + char child_cmd[128]; + int handle; + + CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\""); + + snprintf (child_cmd, sizeof child_cmd, "child-close %d", handle); + + msg ("wait(exec()) = %d", wait (exec (child_cmd))); + + check_file_handle (handle, "sample.txt", sample, sizeof sample - 1); +} -- cgit v1.2.1