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/vm/mmap-twice.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 src/tests/vm/mmap-twice.c (limited to 'src/tests/vm/mmap-twice.c') diff --git a/src/tests/vm/mmap-twice.c b/src/tests/vm/mmap-twice.c new file mode 100644 index 0000000..d277a37 --- /dev/null +++ b/src/tests/vm/mmap-twice.c @@ -0,0 +1,28 @@ +/* Maps the same file into memory twice and verifies that the + same data is readable in both. */ + +#include +#include +#include "tests/vm/sample.inc" +#include "tests/lib.h" +#include "tests/main.h" + +void +test_main (void) +{ + char *actual[2] = {(char *) 0x10000000, (char *) 0x20000000}; + size_t i; + int handle[2]; + + for (i = 0; i < 2; i++) + { + CHECK ((handle[i] = open ("sample.txt")) > 1, + "open \"sample.txt\" #%zu", i); + CHECK (mmap (handle[i], actual[i]) != MAP_FAILED, + "mmap \"sample.txt\" #%zu at %p", i, (void *) actual[i]); + } + + for (i = 0; i < 2; i++) + CHECK (!memcmp (actual[i], sample, strlen (sample)), + "compare mmap'd file %zu against data", i); +} -- cgit v1.2.1