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libblkio
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main
tests/read.c
61 строка
1 KB
Alberto Faria
tests: Tolerate short POSIX reads/writes
16 апр 2023, 20:56
16 апр 2023, 20:56
fb5ba42
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// SPDX-License-Identifier: (MIT OR Apache-2.0) #include "util.h" enum { TEST_FILE_SIZE = 2 * 1024 * 1024, TEST_FILE_OFFSET = 0x10000, }; static char filename[] = "read-XXXXXX"; /* * Read a well-known pattern from an offset in a file. */ int main(int argc, char **argv) { struct test_opts opts; struct blkio *b; struct blkioq *q; struct blkio_mem_region mem_region; struct blkio_completion completion; void *buf; /* I/O buffer */ void *pattern; /* reference data at TEST_FILE_OFFSET */ size_t buf_size; int fd; parse_generic_opts(&opts, argc, argv); buf_size = sysconf(_SC_PAGESIZE); /* Initialize pattern buffer */ pattern = malloc(buf_size); assert(pattern); memset(pattern, 'A', buf_size); create_and_connect(&b, &opts, filename, TEST_FILE_SIZE); ok(blkio_get_int(b, "fd", &fd)); assert(fd >= 0); assert(pwrite_full(fd, pattern, buf_size, TEST_FILE_OFFSET) == buf_size); /* Set up I/O buffer */ ok(blkio_alloc_mem_region(b, &mem_region, buf_size)); buf = mem_region.addr; ok(blkio_set_int(b, "num-queues", 1)); ok(blkio_start(b)); ok(blkio_map_mem_region(b, &mem_region)); q = blkio_get_queue(b, 0); assert(q); blkioq_read(q, TEST_FILE_OFFSET, buf, buf_size, NULL, 0); assert(blkioq_do_io(q, &completion, 1, 1, NULL) == 1); assert(completion.ret == 0); assert(memcmp(buf, pattern, buf_size) == 0); blkio_destroy(&b); return 0; }