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// SPDX-License-Identifier: (MIT OR Apache-2.0)
#include "util.h"
enum {
TEST_FILE_SIZE = 2 * 1024 * 1024,
};
static char filename[] = "block-limits-XXXXXX";
static void expect_get_int_err(struct blkio *b,
int neg_errno,
const char *props[])
{
for (int i = 0; props[i]; i++) {
int value;
err(blkio_get_int(b, props[i], &value), neg_errno);
}
}
static void expect_get_int_ok(struct blkio *b, const char *props[])
{
for (int i = 0; props[i]; i++) {
int value;
ok(blkio_get_int(b, props[i], &value));
}
}
static void expect_set_int_err(struct blkio *b,
int neg_errno,
const char *props[])
{
for (int i = 0; props[i]; i++) {
err(blkio_set_int(b, props[i], 123456789), neg_errno);
}
}
static void expect_get_uint64_err(struct blkio *b,
int neg_errno,
const char *props[])
{
for (int i = 0; props[i]; i++) {
uint64_t value;
err(blkio_get_uint64(b, props[i], &value), neg_errno);
}
}
static void expect_get_uint64_ok(struct blkio *b, const char *props[])
{
for (int i = 0; props[i]; i++) {
uint64_t value;
ok(blkio_get_uint64(b, props[i], &value));
}
}
static void expect_set_uint64_err(struct blkio *b,
int neg_errno,
const char *props[])
{
for (int i = 0; props[i]; i++) {
err(blkio_set_uint64(b, props[i], 123456789), neg_errno);
}
}
/*
* Get and set block limits properties, checking for expected error codes and
* ignoring valid values returned.
*
* The specific values of these properties depend on the driver and environment
* so it is difficult to validate them. It is still useful to exercise the code
* just for code coverage (e.g. to prove there are no crashes).
*/
int main(int argc, char **argv)
{
static const char *int_props[] = {
"buf-alignment",
"discard-alignment",
"discard-alignment-offset",
"max-segment-len",
"max-segments",
"max-transfer",
"optimal-buf-alignment",
"optimal-io-alignment",
"optimal-io-size",
"request-alignment",
NULL
};
static const char *uint64_props[] = {
"max-discard-len",
"max-write-zeroes-len",
NULL
};
struct test_opts opts;
struct blkio *b;
parse_generic_opts(&opts, argc, argv);
create(&b, &opts, filename, TEST_FILE_SIZE);
expect_get_int_err(b, -ENODEV, int_props);
expect_get_uint64_err(b, -ENODEV, uint64_props);
expect_set_int_err(b, -EACCES, int_props);
expect_set_uint64_err(b, -EACCES, uint64_props);
ok(blkio_connect(b));
/* The properties are still read-only */
expect_set_int_err(b, -EACCES, int_props);
expect_set_uint64_err(b, -EACCES, uint64_props);
expect_get_int_ok(b, int_props);
expect_get_uint64_ok(b, uint64_props);
blkio_destroy(&b);
assert(!b);
return 0;
}
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