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/* SPDX-License-Identifier: MIT */
/*
* Description: run various unlink tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "liburing.h"
static int test_rmdir(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
char buf[32];
int ret;
sprintf(buf, ".tmp.dir.%d", getpid());
if (mkdir(buf, 0755) < 0) {
perror("mkdir");
return 1;
}
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_unlink(sqe, buf, AT_REMOVEDIR);
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
if (!ret) {
struct stat sb;
if (!stat(buf, &sb)) {
fprintf(stderr, "dir unlinked but still there\n");
goto err;
}
}
unlink(buf);
return ret;
err:
unlink(buf);
return 1;
}
static int test_unlink_badaddr(struct io_uring *ring)
{
const char *old = (const char *) (uintptr_t) 0x1234;
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_unlink(sqe, old, 0);
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
return ret;
err:
return 1;
}
static int test_unlink(struct io_uring *ring, const char *old)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_unlink(sqe, old, 0);
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
return ret;
err:
return 1;
}
static int stat_file(const char *buf)
{
struct stat sb;
if (!stat(buf, &sb))
return 0;
return errno;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
char buf[32] = "./XXXXXX";
int ret;
if (argc > 1)
return 0;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
ret = mkstemp(buf);
if (ret < 0) {
perror("mkstemp");
return 1;
}
close(ret);
if (stat_file(buf) != 0) {
perror("stat");
return 1;
}
ret = test_unlink(&ring, buf);
if (ret < 0) {
if (ret == -EBADF || ret == -EINVAL) {
fprintf(stdout, "Unlink not supported, skipping\n");
unlink(buf);
return 0;
}
fprintf(stderr, "rename: %s\n", strerror(-ret));
goto err;
} else if (ret)
goto err;
ret = stat_file(buf);
if (ret != ENOENT) {
fprintf(stderr, "stat got %s\n", strerror(ret));
return 1;
}
ret = test_unlink(&ring, "/3/2/3/1/z/y");
if (ret != -ENOENT) {
fprintf(stderr, "invalid unlink got %s\n", strerror(-ret));
return 1;
}
ret = test_unlink_badaddr(&ring);
if (ret != -EFAULT) {
fprintf(stderr, "badaddr unlink got %s\n", strerror(-ret));
return 1;
}
ret = test_rmdir(&ring);
if (ret) {
fprintf(stderr, "rmdir failed: %s\n", strerror(-ret));
return 1;
}
return 0;
err:
unlink(buf);
return 1;
}
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