[PATCH v1 4/4] liburing: Add new test program to verify xattr support

Stefan Roesch
2021-11-29T22:17:10Z

Summary:

This adds a new test program to test the xattr support:
- fgetxattr
- fsetxattr
- getxattr
- setxattr

It also includes test cases for failure conditions and
for passing in an invalid sqe. The test case for checking
of invalid SQE, must be enabled by defining
DESTRUCTIVE_TESTING.

Signed-off-by: Stefan Roesch <shr@fb.com>
---
test/Makefile | 1 +
test/xattr.c | 425 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 426 insertions(+)
create mode 100644 test/xattr.c

diff --git a/test/Makefile b/test/Makefile
index c09078a..aa2da4e 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -147,6 +147,7 @@ test_srcs := \
timeout-overflow.c \
unlink.c \
wakeup-hang.c \
+ xattr.c \
skip-cqe.c \
# EOL

diff --git a/test/xattr.c b/test/xattr.c
new file mode 100644
index 0000000..017017e
--- /dev/null
+++ b/test/xattr.c
@@ -0,0 +1,425 @@
+#include <assert.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/xattr.h>
+#include <unistd.h>
+
+#include "helpers.h"
+#include "liburing.h"
+
+/* Define constants. */
+#define XATTR_SIZE 255
+#define QUEUE_DEPTH 32
+
+#define FILENAME "xattr.test"
+#define KEY1 "user.val1"
+#define KEY2 "user.val2"
+#define VALUE1 "value1"
+#define VALUE2 "value2-a-lot-longer"
+
+
+/* Call fsetxattr. */
+int io_uring_fsetxattr(struct io_uring *ring,
+ int fd,
+ const char *name,
+ const void *value,
+ size_t size,
+ int flags)
+{
+ struct io_uring_sqe *sqe;
+ struct io_uring_cqe *cqe;
+ int ret;
+
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ fprintf(stderr, "Error cannot get sqe\n");
+ return -1;
+ }
+
+ io_uring_prep_fsetxattr(sqe, fd, name, value, flags, size);
+
+ ret = io_uring_submit(ring);
+ if (ret != 1) {
+ fprintf(stderr, "Error io_uring_submit_and_wait: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = io_uring_wait_cqe(ring, &cqe);
+ if (ret) {
+ fprintf(stderr, "Error io_uring_wait_cqe: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = cqe->res;
+ io_uring_cqe_seen(ring, cqe);
+
+ return ret;
+}
+
+/* Submit fgetxattr request. */
+int io_uring_fgetxattr(struct io_uring *ring,
+ int fd,
+ const char *name,
+ void *value,
+ size_t size)
+{
+ struct io_uring_sqe *sqe;
+ struct io_uring_cqe *cqe;
+ int ret;
+
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ fprintf(stderr, "Error cannot get sqe\n");
+ return -1;
+ }
+
+ io_uring_prep_fgetxattr(sqe, fd, name, value, size);
+
+ ret = io_uring_submit(ring);
+ if (ret != 1) {
+ fprintf(stderr, "Error io_uring_submit_and_wait: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = io_uring_wait_cqe(ring, &cqe);
+ if (ret) {
+ fprintf(stderr, "Error io_uring_wait_cqe: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = cqe->res;
+ if (ret == -1) {
+ fprintf(stderr, "Error couldn'tget value\n");
+ return -1;
+ }
+
+ io_uring_cqe_seen(ring, cqe);
+ return ret;
+}
+
+/* Call setxattr. */
+int io_uring_setxattr(struct io_uring *ring,
+ const char *path,
+ const char *name,
+ const void *value,
+ size_t size,
+ int flags)
+{
+ struct io_uring_sqe *sqe;
+ struct io_uring_cqe *cqe;
+ int ret;
+
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ fprintf(stderr, "Error cannot get sqe\n");
+ return -1;
+ }
+
+ io_uring_prep_setxattr(sqe, name, value, path, flags, size);
+
+ ret = io_uring_submit_and_wait(ring, 1);
+ if (ret != 1) {
+ fprintf(stderr, "Error io_uring_submit_and_wait: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = io_uring_wait_cqe(ring, &cqe);
+ if (ret) {
+ fprintf(stderr, "Error io_uring_wait_cqe: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = cqe->res;
+ io_uring_cqe_seen(ring, cqe);
+
+ return ret;
+}
+
+/* Submit getxattr request. */
+int io_uring_getxattr(struct io_uring *ring,
+ const char *path,
+ const char *name,
+ void *value,
+ size_t size)
+{
+ struct io_uring_sqe *sqe;
+ struct io_uring_cqe *cqe;
+ int ret;
+
+ sqe = io_uring_get_sqe(ring);
+ if (!sqe) {
+ fprintf(stderr, "Error cannot get sqe\n");
+ return -1;
+ }
+
+ io_uring_prep_getxattr(sqe, name, value, path, size);
+
+ ret = io_uring_submit(ring);
+ if (ret != 1) {
+ fprintf(stderr, "Error io_uring_submit_and_wait: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = io_uring_wait_cqe(ring, &cqe);
+ if (ret) {
+ fprintf(stderr, "Error io_uring_wait_cqe: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = cqe->res;
+ if (ret == -1) {
+ fprintf(stderr, "Error couldn'tget value\n");
+ return -1;
+ }
+
+ io_uring_cqe_seen(ring, cqe);
+ return ret;
+}
+
+/* Test driver for fsetxattr and fgetxattr. */
+int test_fxattr(void)
+{
+ int rc = 0;
+ size_t value_len;
+ struct io_uring ring;
+ char value[XATTR_SIZE];
+
+ /* Init io-uring queue. */
+ int ret = io_uring_queue_init(QUEUE_DEPTH, &ring, 0);
+ if (ret) {
+ fprintf(stderr, "child: ring setup failed: %d\n", ret);
+ return -1;
+ }
+
+ /* Create the test file. */
+ int fd = open(FILENAME, O_CREAT | O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "Error: cannot open file: ret=%d\n", fd);
+ return -1;
+ }
+
+ /* Test writing attributes. */
+ if (io_uring_fsetxattr(&ring, fd, KEY1, VALUE1, strlen(VALUE1), 0) == -1) {
+ fprintf(stderr, "Error fsetxattr cannot write key1\n");
+ rc = -1;
+ goto Exit;
+ }
+
+ if (io_uring_fsetxattr(&ring, fd, KEY2, VALUE2, strlen(VALUE2), 0) == -1) {
+ fprintf(stderr, "Error fsetxattr cannot write key1\n");
+ rc = -1;
+ goto Exit;
+ }
+
+ /* Test reading attributes. */
+ value_len = io_uring_fgetxattr(&ring, fd, KEY1, value, XATTR_SIZE);
+ if (value_len != strlen(value) || strncmp(value, VALUE1, value_len)) {
+ fprintf(stderr, "Error: fgetxattr expectd value: %s, returned value: %s\n", VALUE1, value);
+ rc = -1;
+ goto Exit;
+ }
+
+ value_len = io_uring_fgetxattr(&ring, fd, KEY2, value, XATTR_SIZE);
+ if (value_len != strlen(value)|| strncmp(value, VALUE2, value_len)) {
+ fprintf(stderr, "Error: fgetxattr expectd value: %s, returned value: %s\n", VALUE2, value);
+ rc = -1;
+ goto Exit;
+ }
+
+ /* Cleanup. */
+Exit:
+ close(fd);
+ unlink(FILENAME);
+
+ io_uring_queue_exit(&ring);
+
+ return rc;
+}
+
+/* Test driver for setxattr and getxattr. */
+int test_xattr(void)
+{
+ int rc = 0;
+ int value_len;
+ struct io_uring ring;
+ char value[XATTR_SIZE];
+
+ /* Init io-uring queue. */
+ int ret = io_uring_queue_init(QUEUE_DEPTH, &ring, 0);
+ if (ret) {
+ fprintf(stderr, "child: ring setup failed: %d\n", ret);
+ return -1;
+ }
+
+ /* Create the test file. */
+ t_create_file(FILENAME, 0);
+
+ /* Test writing attributes. */
+ if (io_uring_setxattr(&ring, FILENAME, KEY1, VALUE1, strlen(VALUE1), 0) == -1) {
+ fprintf(stderr, "Error setxattr cannot write key1\n");
+ rc = -1;
+ goto Exit;
+ }
+
+ if (io_uring_setxattr(&ring, FILENAME, KEY2, VALUE2, strlen(VALUE2), 0) == -1) {
+ fprintf(stderr, "Error setxattr cannot write key1\n");
+ rc = -1;
+ goto Exit;
+ }
+
+ /* Test reading attributes. */
+ value_len = io_uring_getxattr(&ring, FILENAME, KEY1, value, XATTR_SIZE);
+ if (value_len != strlen(VALUE1) || strncmp(value, VALUE1, value_len)) {
+ fprintf(stderr, "Error: getxattr expectd value: %s, returned value: %s\n", VALUE1, value);
+ rc = -1;
+ goto Exit;
+ }
+
+ value_len = io_uring_getxattr(&ring, FILENAME, KEY2, value, XATTR_SIZE);
+ if (value_len != strlen(VALUE2) || strncmp(value, VALUE2, value_len)) {
+ fprintf(stderr, "Error: getxattr expectd value: %s, returned value: %s\n", VALUE2, value);
+ rc = -1;
+ goto Exit;
+ }
+
+ /* Cleanup. */
+Exit:
+ io_uring_queue_exit(&ring);
+ unlink(FILENAME);
+
+ return rc;
+}
+
+/* Test driver for failure cases of fsetxattr and fgetxattr. */
+int test_failure_fxattr(void)
+{
+ int rc = 0;
+ struct io_uring ring;
+ char value[XATTR_SIZE];
+
+ /* Init io-uring queue. */
+ int ret = io_uring_queue_init(QUEUE_DEPTH, &ring, 0);
+ if (ret) {
+ fprintf(stderr, "child: ring setup failed: %d\n", ret);
+ return -1;
+ }
+
+ /* Create the test file. */
+ int fd = open(FILENAME, O_CREAT | O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "Error: cannot open file: ret=%d\n", fd);
+ return -1;
+ }
+
+ /* Test writing attributes. */
+ assert(io_uring_fsetxattr(&ring, -1, KEY1, VALUE1, strlen(VALUE1), 0) < 0);
+ assert(io_uring_fsetxattr(&ring, fd, NULL, VALUE1, strlen(VALUE1), 0) < 0);
+ assert(io_uring_fsetxattr(&ring, fd, KEY1, NULL, strlen(VALUE1), 0) < 0);
+ assert(io_uring_fsetxattr(&ring, fd, KEY1, VALUE1, 0, 0) == 0);
+ assert(io_uring_fsetxattr(&ring, fd, KEY1, VALUE1, -1, 0) < 0);
+
+ /* Test reading attributes. */
+ assert(io_uring_fgetxattr(&ring, -1, KEY1, value, XATTR_SIZE) < 0);
+ assert(io_uring_fgetxattr(&ring, fd, NULL, value, XATTR_SIZE) < 0);
+ assert(io_uring_fgetxattr(&ring, fd, KEY1, value, 0) == 0);
+
+ /* Cleanup. */
+ close(fd);
+ unlink(FILENAME);
+
+ io_uring_queue_exit(&ring);
+
+ return rc;
+}
+
+
+/* Test driver for failure cases for setxattr and getxattr. */
+int test_failure_xattr(void)
+{
+ int rc = 0;
+ struct io_uring ring;
+ char value[XATTR_SIZE];
+
+ /* Init io-uring queue. */
+ int ret = io_uring_queue_init(QUEUE_DEPTH, &ring, 0);
+ if (ret) {
+ fprintf(stderr, "child: ring setup failed: %d\n", ret);
+ return -1;
+ }
+
+ /* Create the test file. */
+ t_create_file(FILENAME, 0);
+
+ /* Test writing attributes. */
+ assert(io_uring_setxattr(&ring, "complete garbage", KEY1, VALUE1, strlen(VALUE1), 0) < 0);
+ assert(io_uring_setxattr(&ring, NULL, KEY1, VALUE1, strlen(VALUE1), 0) < 0);
+ assert(io_uring_setxattr(&ring, FILENAME, NULL, VALUE1, strlen(VALUE1), 0) < 0);
+ assert(io_uring_setxattr(&ring, FILENAME, KEY1, NULL, strlen(VALUE1), 0) < 0);
+ assert(io_uring_setxattr(&ring, FILENAME, KEY1, VALUE1, 0, 0) == 0);
+
+ /* Test reading attributes. */
+ assert(io_uring_getxattr(&ring, "complete garbage", KEY1, value, XATTR_SIZE) < 0);
+ assert(io_uring_getxattr(&ring, NULL, KEY1, value, XATTR_SIZE) < 0);
+ assert(io_uring_getxattr(&ring, FILENAME, NULL, value, XATTR_SIZE) < 0);
+ assert(io_uring_getxattr(&ring, FILENAME, KEY1, NULL, XATTR_SIZE) == 0);
+ assert(io_uring_getxattr(&ring, FILENAME, KEY1, value, 0) == 0);
+
+ /* Cleanup. */
+ io_uring_queue_exit(&ring);
+ unlink(FILENAME);
+
+ return rc;
+}
+
+/* Test for invalid SQE, this will cause a segmentation fault if enabled. */
+int test_invalid_sqe(void)
+{
+#ifdef DESTRUCTIVE_TEST
+ struct io_uring_sqe *sqe = NULL;
+ struct io_uring_cqe *cqe = NULL;
+ struct io_uring ring;
+
+ /* Init io-uring queue. */
+ int ret = io_uring_queue_init(QUEUE_DEPTH, &ring, 0);
+ if (ret) {
+ fprintf(stderr, "child: ring setup failed: %d\n", ret);
+ return -1;
+ }
+
+ /* Pass invalid SQE. */
+ io_uring_prep_setxattr(sqe, FILENAME, KEY1, VALUE1, strlen(VALUE1), 0);
+
+ ret = io_uring_submit(&ring);
+ if (ret != 1) {
+ fprintf(stderr, "Error io_uring_submit_and_wait: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = io_uring_wait_cqe(&ring, &cqe);
+ if (ret) {
+ fprintf(stderr, "Error io_uring_wait_cqe: ret=%d\n", ret);
+ return -1;
+ }
+
+ ret = cqe->res;
+ io_uring_cqe_seen(&ring, cqe);
+
+ return ret;
+#else
+ return 0;
+#endif
+}
+
+/* Test driver. */
+int main(int argc, char **argv) {
+ if (test_fxattr()
+ || test_xattr()
+ || test_failure_fxattr()
+ || test_failure_xattr()
+ || test_invalid_sqe())
+ return EXIT_FAILURE;
+
+ return EXIT_SUCCESS;
+}
--
2.30.2