From 19f4f86bfed21c5326ed2acebe1163f3a83e832b Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 04:25:50 +0200 Subject: Adding upstream version 241. Signed-off-by: Daniel Baumann --- src/test/test-io-util.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/test/test-io-util.c (limited to 'src/test/test-io-util.c') diff --git a/src/test/test-io-util.c b/src/test/test-io-util.c new file mode 100644 index 0000000..42e632a --- /dev/null +++ b/src/test/test-io-util.c @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include +#include +#include + +#include "alloc-util.h" +#include "fd-util.h" +#include "io-util.h" +#include "macro.h" + +static void test_sparse_write_one(int fd, const char *buffer, size_t n) { + char check[n]; + + assert_se(lseek(fd, 0, SEEK_SET) == 0); + assert_se(ftruncate(fd, 0) >= 0); + assert_se(sparse_write(fd, buffer, n, 4) == (ssize_t) n); + + assert_se(lseek(fd, 0, SEEK_CUR) == (off_t) n); + assert_se(ftruncate(fd, n) >= 0); + + assert_se(lseek(fd, 0, SEEK_SET) == 0); + assert_se(read(fd, check, n) == (ssize_t) n); + + assert_se(memcmp(buffer, check, n) == 0); +} + +static void test_sparse_write(void) { + const char test_a[] = "test"; + const char test_b[] = "\0\0\0\0test\0\0\0\0"; + const char test_c[] = "\0\0test\0\0\0\0"; + const char test_d[] = "\0\0test\0\0\0test\0\0\0\0test\0\0\0\0\0test\0\0\0test\0\0\0\0test\0\0\0\0\0\0\0\0"; + const char test_e[] = "test\0\0\0\0test"; + _cleanup_close_ int fd = -1; + char fn[] = "/tmp/sparseXXXXXX"; + + fd = mkostemp(fn, O_CLOEXEC); + assert_se(fd >= 0); + unlink(fn); + + test_sparse_write_one(fd, test_a, sizeof(test_a)); + test_sparse_write_one(fd, test_b, sizeof(test_b)); + test_sparse_write_one(fd, test_c, sizeof(test_c)); + test_sparse_write_one(fd, test_d, sizeof(test_d)); + test_sparse_write_one(fd, test_e, sizeof(test_e)); +} + +int main(void) { + test_sparse_write(); + + return 0; +} -- cgit v1.2.3