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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Add new test case io_uring05.c to validate vectored I/O operations using partial vector sets with different file offsets. The test performs: - IORING_OP_WRITEV: Write first half using first 2 vectors at offset 0 - IORING_OP_WRITEV: Write second half using next 2 vectors at offset 2048 - IORING_OP_READV: Read entire file using all 4 vectors - Data integrity verification across all vectors This validates that io_uring correctly handles partial vector operations and maintains data integrity when using different vector subsets with specific file offsets. Signed-off-by: Sachin Sant --- V2 changes: - Updated subject prefix to align with rest of the series - Declare fd as static with file scope. - Reset fd at the top of run(), and close it in cleanup() - Remove extra blank line from description - Link to v1 https://lore.kernel.org/ltp/20260506183750.97191-1-sachinp@linux.ibm.com/T/#t --- runtest/syscalls | 1 + testcases/kernel/syscalls/io_uring/.gitignore | 1 + .../kernel/syscalls/io_uring/io_uring05.c | 98 +++++++++++++++++++ 3 files changed, 100 insertions(+) create mode 100644 testcases/kernel/syscalls/io_uring/io_uring05.c diff --git a/runtest/syscalls b/runtest/syscalls index 6b047b5fd..bab0e8f3b 100644 --- a/runtest/syscalls +++ b/runtest/syscalls @@ -1905,6 +1905,7 @@ io_uring01 io_uring01 io_uring02 io_uring02 io_uring03 io_uring03 io_uring04 io_uring04 +io_uring05 io_uring05 # Tests below may cause kernel memory leak perf_event_open03 perf_event_open03 diff --git a/testcases/kernel/syscalls/io_uring/.gitignore b/testcases/kernel/syscalls/io_uring/.gitignore index 36cd24662..bce7048cd 100644 --- a/testcases/kernel/syscalls/io_uring/.gitignore +++ b/testcases/kernel/syscalls/io_uring/.gitignore @@ -2,3 +2,4 @@ /io_uring02 /io_uring03 /io_uring04 +/io_uring05 diff --git a/testcases/kernel/syscalls/io_uring/io_uring05.c b/testcases/kernel/syscalls/io_uring/io_uring05.c new file mode 100644 index 000000000..ea58a8222 --- /dev/null +++ b/testcases/kernel/syscalls/io_uring/io_uring05.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2026 IBM + * Author: Sachin Sant + */ +/*\ + * Test partial vector operations with IORING_OP_READV and IORING_OP_WRITEV. + * + * This test validates vectored I/O operations using partial vector sets + * and different file offsets. It performs: + * 1. IORING_OP_WRITEV - Writing first half using first 2 vectors at offset 0 + * 2. IORING_OP_WRITEV - Writing second half using next 2 vectors at offset + * 2048 + * 3. IORING_OP_READV - Reading entire file using all 4 vectors + * 4. Data integrity verification across all vectors + */ + +#include "io_uring_common.h" + +#define TEST_FILE "io_uring_test_file" +#define QUEUE_DEPTH 2 +#define NUM_VECS 4 +#define VEC_SIZE 1024 + +static struct iovec *write_iovs, *read_iovs; +static struct io_uring_submit s; +static sigset_t sig; +static int fd = -1; + +static void run(void) +{ + int half_size = 2 * VEC_SIZE; + + fd = -1; + + io_uring_init_iovec_pattern(write_iovs, NUM_VECS, 'A', 1); + io_uring_clear_iovec(read_iovs, NUM_VECS); + + fd = SAFE_OPEN(TEST_FILE, O_RDWR | O_CREAT | O_TRUNC, 0644); + + tst_res(TINFO, "Writing first half using first 2 vectors at offset 0"); + /* Write first half using first 2 vectors at offset 0 */ + io_uring_do_vec_io_op(&s, fd, IORING_OP_WRITEV, write_iovs, 2, 0, + half_size, &sig); + + tst_res(TINFO, + "Writing second half using next 2 vectors at offset %d", + half_size); + /* Write second half using next 2 vectors at offset half_size */ + io_uring_do_vec_io_op(&s, fd, IORING_OP_WRITEV, &write_iovs[2], 2, + half_size, half_size, &sig); + + SAFE_FSYNC(fd); + + tst_res(TINFO, "Reading entire file using all 4 vectors"); + /* Read back entire file using all 4 vectors */ + io_uring_do_vec_io_op(&s, fd, IORING_OP_READV, read_iovs, NUM_VECS, 0, + NUM_VECS * VEC_SIZE, &sig); + + io_uring_verify_iovec(write_iovs, read_iovs, NUM_VECS); + + SAFE_CLOSE(fd); +} + +static void setup(void) +{ + io_uring_setup_supported_by_kernel(); + sigemptyset(&sig); + memset(&s, 0, sizeof(s)); + io_uring_setup_queue(&s, QUEUE_DEPTH, 0); +} + +static void cleanup(void) +{ + if (fd >= 0) + SAFE_CLOSE(fd); + + io_uring_cleanup_queue(&s, QUEUE_DEPTH); +} + +static struct tst_test test = { + .test_all = run, + .setup = setup, + .cleanup = cleanup, + .needs_tmpdir = 1, + .bufs = (struct tst_buffers []) { + {&write_iovs, .iov_sizes = (int[]){VEC_SIZE, VEC_SIZE, + VEC_SIZE, VEC_SIZE, -1}}, + {&read_iovs, .iov_sizes = (int[]){VEC_SIZE, VEC_SIZE, + VEC_SIZE, VEC_SIZE, -1}}, + {} + }, + .save_restore = (const struct tst_path_val[]) { + {"/proc/sys/kernel/io_uring_disabled", "0", + TST_SR_SKIP_MISSING | TST_SR_TCONF_RO}, + {} + } +}; -- 2.39.1 -- Mailing list info: https://lists.linux.it/listinfo/ltp