1 files changed, 346 insertions, 0 deletions
diff --git a/tests/unit-utils-io.c b/tests/unit-utils-io.c
new file mode 100644
index 0000000..8120842
--- /dev/null
+++ b/tests/unit-utils-io.c
@@ -0,0 +1,346 @@
+/*
+ * simple unit test for utils_io.c (blockwise low level functions)
+ *
+ * Copyright (C) 2018-2021 Red Hat, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "utils_io.h"
+
+enum fn_enum {
+	READ_BUFFER = 0,
+	WRITE_BUFFER,
+	READ_BLOCKWISE,
+	WRITE_BLOCKWISE,
+	READ_LSEEK_BLOCKWISE,
+	WRITE_LSEEK_BLOCKWISE
+} test_fn;
+
+char		*test_file;
+size_t		test_bsize;
+size_t		test_alignment;
+size_t		test_length;
+off_t		test_offset; //FIXME: check for proper 64bit support (and test it!)
+size_t		test_mem_alignment = 4096;
+
+static int test_read_buffer(void)
+{
+	void *buffer = NULL;
+	int fd = -1;
+	ssize_t ret = -EINVAL;
+
+	//printf("Entering test_read_buffer\n");
+
+	if (posix_memalign(&buffer, test_mem_alignment, test_length)) {
+		fprintf(stderr, "Failed to allocate aligned buffer.\n");
+		goto out;
+	}
+
+	fd = open(test_file, O_RDONLY | O_DIRECT);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open %s.\n", test_file);
+		goto out;
+	}
+
+	ret = read_buffer(fd, buffer, test_length);
+	if (ret < 0)
+		goto out;
+
+	ret = (size_t) ret == test_length ? 0 : -EIO;
+out:
+	if (fd >= 0)
+		close(fd);
+	free(buffer);
+	return ret;
+}
+
+static int test_write_buffer(void)
+{
+	void *buffer = NULL;
+	int fd = -1;
+	ssize_t ret = -EINVAL;
+
+	//printf("Entering test_write_buffer\n");
+
+	if (posix_memalign(&buffer, test_mem_alignment, test_length)) {
+		fprintf(stderr, "Failed to allocate aligned buffer.\n");
+		goto out;
+	}
+
+	fd = open(test_file, O_WRONLY | O_DIRECT);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open %s.\n", test_file);
+		goto out;
+	}
+
+	ret = write_buffer(fd, buffer, test_length);
+	if (ret < 0)
+		goto out;
+
+	ret = (size_t) ret == test_length ? 0 : -EIO;
+out:
+	if (fd >= 0)
+		close(fd);
+	free(buffer);
+	return ret;
+}
+
+static int test_read_blockwise(void)
+{
+	void *buffer = NULL;
+	int fd = -1;
+	ssize_t ret = -EINVAL;
+
+	//printf("Entering test_read_blockwise ");
+	//printf("test_bsize: %zu, test_length: %zu\n", test_bsize, test_length);
+
+	if (posix_memalign(&buffer, test_mem_alignment, test_length)) {
+		fprintf(stderr, "Failed to allocate aligned buffer.\n");
+		goto out;
+	}
+
+	fd = open(test_file, O_RDONLY | O_DIRECT);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open %s.\n", test_file);
+		goto out;
+	}
+
+
+	ret = read_blockwise(fd, test_bsize, test_mem_alignment, buffer, test_length);
+	if (ret < 0)
+		goto out;
+
+	ret = (size_t) ret == test_length ? 0 : -EIO;
+out:
+	if (fd >= 0)
+		close(fd);
+	free(buffer);
+	return ret;
+}
+
+static int test_write_blockwise(void)
+{
+	void *buffer = NULL;
+	int fd = -1;
+	ssize_t ret = -EINVAL;
+
+	//printf("Entering test_write_blockwise\n");
+
+	if (posix_memalign(&buffer, test_mem_alignment, test_length)) {
+		fprintf(stderr, "Failed to allocate aligned buffer.\n");
+		goto out;
+	}
+
+	fd = open(test_file, O_RDWR | O_DIRECT);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open %s.\n", test_file);
+		goto out;
+	}
+
+	ret = write_blockwise(fd, test_bsize, test_mem_alignment, buffer, test_length);
+	if (ret < 0)
+		goto out;
+
+	ret = (size_t) ret == test_length ? 0 : -EIO;
+out:
+	if (fd >= 0)
+		close(fd);
+	free(buffer);
+	return ret;
+}
+
+static int test_read_lseek_blockwise(void)
+{
+	void *buffer = NULL;
+	int fd = -1;
+	ssize_t ret = -EINVAL;
+
+	//printf("Entering test_read_lseek_blockwise\n");
+
+	if (posix_memalign(&buffer, test_mem_alignment, test_length)) {
+		fprintf(stderr, "Failed to allocate aligned buffer.\n");
+		goto out;
+	}
+
+	fd = open(test_file, O_RDONLY | O_DIRECT);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open %s.\n", test_file);
+		goto out;
+	}
+
+	ret = read_lseek_blockwise(fd, test_bsize, test_mem_alignment, buffer, test_length, test_offset);
+	if (ret < 0)
+		goto out;
+
+	ret = (size_t) ret == test_length ? 0 : -EIO;
+out:
+	if (fd >= 0)
+		close(fd);
+	free(buffer);
+	return ret;
+}
+
+static int test_write_lseek_blockwise(void)
+{
+	void *buffer = NULL;
+	int fd = -1;
+	ssize_t ret = -EINVAL;
+
+	//printf("Entering test_write_lseek_blockwise\n");
+
+	if (posix_memalign(&buffer, test_mem_alignment, test_length)) {
+		fprintf(stderr, "Failed to allocate aligned buffer.\n");
+		goto out;
+	}
+
+	fd = open(test_file, O_RDWR | O_DIRECT);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open %s.\n", test_file);
+		goto out;
+	}
+
+	ret = write_lseek_blockwise(fd, test_bsize, test_mem_alignment, buffer, test_length, test_offset);
+	if (ret < 0)
+		goto out;
+
+	ret = (size_t) ret == test_length ? 0 : -EIO;
+out:
+	if (fd >= 0)
+		close(fd);
+	free(buffer);
+	return ret;
+}
+
+static void usage(void)
+{
+	fprintf(stderr, "Use:\tunit-utils-io file/device blockwise_fn length  [bsize] [offset].\n");
+}
+
+static int parse_input_params(int argc, char **argv)
+{
+	struct stat st;
+	unsigned long offset;
+
+	if (argc < 4) {
+		usage();
+		return 1;
+	}
+
+	if (stat(argv[1], &st)) {
+		fprintf(stderr, "File/device %s is missing?\n", argv[1]);
+		return 1;
+	}
+	test_file = argv[1];
+	if (sscanf(argv[3], "%zu", &test_length) != 1)
+		return 1;
+	if (argc >= 5 && sscanf(argv[4], "%zu", &test_bsize) != 1)
+		return 1;
+	if (argc >= 6) {
+		if (sscanf(argv[5], "%ld", &offset) != 1)
+			return 1;
+		test_offset = offset;
+	}
+
+	if (!strcmp(argv[2], "read_buffer"))
+		test_fn = READ_BUFFER;
+	else if (!strcmp(argv[2], "write_buffer"))
+		test_fn = WRITE_BUFFER;
+	else if (!strcmp(argv[2], "read_blockwise")) {
+		if (argc < 5) {
+			usage();
+			return 1;
+		}
+		test_fn = READ_BLOCKWISE;
+	} else if (!strcmp(argv[2], "write_blockwise")) {
+		if (argc < 5) {
+			usage();
+			return 1;
+		}
+		test_fn = WRITE_BLOCKWISE;
+	} else if (!strcmp(argv[2], "read_lseek_blockwise")) {
+		if (argc < 6) {
+			usage();
+			return 1;
+		}
+		test_fn = READ_LSEEK_BLOCKWISE;
+	} else if (!strcmp(argv[2], "write_lseek_blockwise")) {
+		if (argc < 6) {
+			usage();
+			return 1;
+		}
+		test_fn = WRITE_LSEEK_BLOCKWISE;
+	} else {
+		usage();
+		return 1;
+	}
+
+	/* printf("function '%s': length %zu", argv[2], test_length);
+	if (argc >= 5)
+		printf(", bsize %zu", test_bsize);
+	if (argc >= 6)
+		printf(", offset %llu", test_offset);
+	printf("\n"); */
+
+	return 0;
+}
+
+int main(int argc, char **argv)
+{
+	long ps;
+	int r = EXIT_FAILURE;
+
+	if (parse_input_params(argc, argv))
+		return r;
+
+	ps = sysconf(_SC_PAGESIZE);
+	if (ps > 0)
+		test_mem_alignment = (size_t)ps;
+
+	switch (test_fn) {
+	case READ_BUFFER:
+		r = test_read_buffer();
+		break;
+	case WRITE_BUFFER:
+		r = test_write_buffer();
+		break;
+	case READ_BLOCKWISE:
+		r = test_read_blockwise();
+		break;
+	case WRITE_BLOCKWISE:
+		r = test_write_blockwise();
+		break;
+	case READ_LSEEK_BLOCKWISE:
+		r = test_read_lseek_blockwise();
+		break;
+	case WRITE_LSEEK_BLOCKWISE:
+		r = test_write_lseek_blockwise();
+		break;
+	default :
+		fprintf(stderr, "Internal test error.\n");
+		return r;
+	}
+
+	return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
+}