[LTP] [PATCH 4/4 v2] syscalls/io_submit: Add io_submit03 test for native AIO

[Xie Ziyao]

Test io_submit invoked via syscall(2):
1. io_submit fails and returns EINVAL if ctx is invalid.
2. io_submit fails and returns EINVAL if nr is invalid.
3. io_submit fails and returns EFAULT if iocbpp pointer is invalid.
4. io_submit fails and returns EBADF if fd is invalid.

Signed-off-by: Xie Ziyao <xieziyao@huawei.com>
---
v1->v2:
1. Split io_submit02 into two, one for negative and one for positive cases.
2. Print values not variable names in TST_EXP_PASS().
3. Add .needs_kconfig in this test.

runtest/syscalls                              |   1 +
 .../kernel/syscalls/io_submit/.gitignore      |   1 +
 .../kernel/syscalls/io_submit/io_submit03.c   | 118 ++++++++++++++++++
 3 files changed, 120 insertions(+)
 create mode 100644 testcases/kernel/syscalls/io_submit/io_submit03.c

diff --git a/runtest/syscalls b/runtest/syscalls
index 9c4c64fa3..e1a02ef7f 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -617,6 +617,7 @@ io_setup01 io_setup01
 io_setup02 io_setup02
 io_submit01 io_submit01
 io_submit02 io_submit02
+io_submit03 io_submit03

 keyctl01 keyctl01
 keyctl02 keyctl02
diff --git a/testcases/kernel/syscalls/io_submit/.gitignore b/testcases/kernel/syscalls/io_submit/.gitignore
index 5f2a2cff2..60b07970a 100644
--- a/testcases/kernel/syscalls/io_submit/.gitignore
+++ b/testcases/kernel/syscalls/io_submit/.gitignore
@@ -1,2 +1,3 @@
 /io_submit01
 /io_submit02
+/io_submit03
diff --git a/testcases/kernel/syscalls/io_submit/io_submit03.c b/testcases/kernel/syscalls/io_submit/io_submit03.c
new file mode 100644
index 000000000..e0e596d00
--- /dev/null
+++ b/testcases/kernel/syscalls/io_submit/io_submit03.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) Crackerjack Project., 2007
+ * Ported from Crackerjack to LTP by Masatake YAMATO <yamato@redhat.com>
+ * Copyright (c) 2011-2017 Cyril Hrubis <chrubis@suse.cz>
+ * Copyright (c) 2021 Xie Ziyao <xieziyao@huawei.com>
+ */
+
+/*\
+ * [Description]
+ *
+ * Test io_submit invoked via syscall(2):
+ *
+ * 1. io_submit fails and returns EINVAL if ctx is invalid.
+ * 2. io_submit fails and returns EINVAL if nr is invalid.
+ * 3. io_submit fails and returns EFAULT if iocbpp pointer is invalid.
+ * 4. io_submit fails and returns EBADF if fd is invalid.
+ */
+
+#include <linux/aio_abi.h>
+
+#include "config.h"
+#include "tst_test.h"
+#include "lapi/syscalls.h"
+
+#define RDONLY_FILE "rdonly_file"
+#define WRONLY_FILE "wronly_file"
+#define MODE 0777
+
+static char buf[100];
+static aio_context_t ctx;
+static aio_context_t invalid_ctx;
+
+static struct iocb iocb;
+static struct iocb *iocbs[] = {&iocb};
+
+static struct iocb inv_fd_iocb;
+static struct iocb *inv_fd_iocbs[] = {&inv_fd_iocb};
+
+static int rdonly_fd;
+static struct iocb rdonly_fd_iocb;
+static struct iocb *rdonly_fd_iocbs[] = {&rdonly_fd_iocb};
+
+static int wronly_fd;
+static struct iocb wronly_fd_iocb;
+static struct iocb *wronly_fd_iocbs[] = {&wronly_fd_iocb};
+
+static struct iocb *zero_iocbs[1];
+
+static struct tcase {
+	aio_context_t *ctx;
+	long nr;
+	struct iocb **iocbs;
+	int exp_errno;
+	const char *desc;
+} tc[] = {
+	/* Invalid ctx */
+	{&invalid_ctx, 1, iocbs, EINVAL, "invalid ctx"},
+	/* Invalid nr */
+	{&ctx, -1, iocbs, EINVAL, "invalid nr"},
+	/* Invalid pointer */
+	{&ctx, 1, (void*)-1, EFAULT, "invalid iocbpp pointer"},
+	{&ctx, 1, zero_iocbs, EFAULT, "NULL iocb pointers"},
+	/* Invalid fd */
+	{&ctx, 1, inv_fd_iocbs, EBADF, "invalid fd"},
+	{&ctx, 1, rdonly_fd_iocbs, EBADF, "readonly fd for write"},
+	{&ctx, 1, wronly_fd_iocbs, EBADF, "writeonly fd for read"},
+};
+
+static inline void io_prep_option(struct iocb *cb, int fd, void *buf,
+			size_t count, long long offset, unsigned opcode)
+{
+	memset(cb, 0, sizeof(*cb));
+	cb->aio_fildes = fd;
+	cb->aio_lio_opcode = opcode;
+	cb->aio_buf = (uint64_t)buf;
+	cb->aio_offset = offset;
+	cb->aio_nbytes = count;
+}
+
+static void setup(void)
+{
+	TST_EXP_PASS_SILENT(tst_syscall(__NR_io_setup, 1, &ctx));
+	io_prep_option(&inv_fd_iocb, -1, buf, sizeof(buf), 0, IOCB_CMD_PREAD);
+
+	rdonly_fd = SAFE_OPEN(RDONLY_FILE, O_RDONLY | O_CREAT, MODE);
+	io_prep_option(&rdonly_fd_iocb, rdonly_fd, buf, sizeof(buf), 0, IOCB_CMD_PWRITE);
+
+	wronly_fd = SAFE_OPEN(WRONLY_FILE, O_WRONLY | O_CREAT, MODE);
+	io_prep_option(&wronly_fd_iocb, wronly_fd, buf, sizeof(buf), 0, IOCB_CMD_PREAD);
+}
+
+static void cleanup(void)
+{
+	if (rdonly_fd > 0)
+		SAFE_CLOSE(rdonly_fd);
+	if (wronly_fd > 0)
+		SAFE_CLOSE(wronly_fd);
+	TST_EXP_PASS_SILENT(tst_syscall(__NR_io_destroy, ctx));
+}
+
+static void run(unsigned int i)
+{
+	TST_EXP_FAIL(tst_syscall(__NR_io_submit, *tc[i].ctx, tc[i].nr, tc[i].iocbs),
+		     tc[i].exp_errno, "io_submit() with %s", tc[i].desc);
+}
+
+static struct tst_test test = {
+	.tcnt = ARRAY_SIZE(tc),
+	.needs_tmpdir = 1,
+	.needs_kconfigs = (const char *[]) {
+		"CONFIG_AIO=y",
+		NULL
+	},
+	.setup = setup,
+	.cleanup = cleanup,
+	.test = run,
+};
--
2.17.1