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/* SPDX-License-Identifier: MIT */
/*
* Description: run various truncate tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include "liburing.h"
#include "helpers.h"
#define TWO_GIG_SIZE ((loff_t)2 * 1024 * 1024 * 1024)
#define ONE_GIG_SIZE ((loff_t)1024 * 1024 * 1024)
#define HALF_GIG_SIZE ((loff_t)512 * 1024 * 1024)
static int test_truncate(struct io_uring *ring, int fd)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret = -1;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
return T_EXIT_FAIL;
}
memset(sqe, 0, sizeof(*sqe));
io_uring_prep_rw(IORING_OP_FTRUNCATE, sqe, fd, "fail", 0, 4);
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
return T_EXIT_FAIL;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
return T_EXIT_FAIL;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
if (ret == -EINVAL)
return T_EXIT_PASS;
fprintf(stderr, "unexpected truncate res %d\n", ret);
return T_EXIT_FAIL;
}
static int test_ftruncate(struct io_uring *ring, int fd, loff_t len)
{
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;
}
memset(sqe, 0, sizeof(*sqe));
io_uring_prep_ftruncate(sqe, fd, len);
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 get_file_size(int fd, loff_t *size)
{
struct stat st;
if (fstat(fd, &st) < 0) {
perror("fstat");
return -1;
}
if (S_ISREG(st.st_mode)) {
*size = st.st_size;
return 0;
} else if (S_ISBLK(st.st_mode)) {
unsigned long long bytes;
if (ioctl(fd, BLKGETSIZE64, &bytes) != 0) {
perror("ioctl");
return -1;
}
*size = bytes;
return 0;
}
return -1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
char path[32] = ".truncate.XXXXXX";
int ret;
int fd;
int i;
loff_t size;
loff_t test_sizes[3];
if (argc > 1)
return T_EXIT_SKIP;
ret = io_uring_queue_init(1, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return T_EXIT_FAIL;
}
fd = mkostemp(path, O_WRONLY | O_CREAT | O_TRUNC);
if (fd < 0) {
perror("mkostemp");
return T_EXIT_FAIL;
}
test_sizes[0] = TWO_GIG_SIZE;
test_sizes[1] = ONE_GIG_SIZE;
test_sizes[2] = HALF_GIG_SIZE;
for (i = 0; i < 3; i++) {
ret = test_ftruncate(&ring, fd, test_sizes[i]);
if (ret < 0) {
if (ret == -EBADF || ret == -EINVAL) {
if (i == 0) {
fprintf(stdout, "Ftruncate not supported, skipping\n");
ret = T_EXIT_SKIP;
goto out;
}
goto err;
}
fprintf(stderr, "ftruncate: %s\n", strerror(-ret));
goto err;
} else if (ret) {
fprintf(stderr, "unexpected cqe->res %d\n", ret);
goto err;
}
if (get_file_size(fd, &size))
goto err;
if (size != test_sizes[i]) {
fprintf(stderr, "fail %d size=%llu, %llu\n", i,
(unsigned long long) size,
(unsigned long long) test_sizes[i]);
goto err;
}
}
ret = test_truncate(&ring, fd);
if (ret != T_EXIT_PASS)
goto err;
out:
unlink(path);
close(fd);
return T_EXIT_PASS;
err:
unlink(path);
close(fd);
return T_EXIT_FAIL;
}
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