diff options
Diffstat (limited to 'src/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_xloop04.c')
-rw-r--r-- | src/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_xloop04.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_xloop04.c b/src/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_xloop04.c new file mode 100644 index 0000000..adf5cdf --- /dev/null +++ b/src/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_xloop04.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 2020 FUJITSU LIMITED. All rights reserved. + * Author: Yang Xu <xuyang2018.jy@cn.jujitsu.com> + * + * This is a basic ioctl test about xloopdevice. + * + * It is designed to test XLOOP_SET_CAPACITY can update a live + * xloop device size when we change the size of the underlying + * backing file. Also check sys value. + */ +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <stdlib.h> +#include "lapi/xloop.h" +#include "tst_test.h" + +#define OLD_SIZE 10240 +#define NEW_SIZE 5120 + +static char dev_path[1024], sys_xloop_sizepath[1024]; +static char *wrbuf; +static int dev_num, dev_fd, file_fd, attach_flag; + +static void verify_ioctl_xloop(void) +{ + struct xloop_info xloopinfoget; + + memset(&xloopinfoget, 0, sizeof(xloopinfoget)); + tst_fill_file("test.img", 0, 1024, OLD_SIZE/1024); + tst_attach_device(dev_path, "test.img"); + attach_flag = 1; + + TST_ASSERT_INT(sys_xloop_sizepath, OLD_SIZE/512); + file_fd = SAFE_OPEN("test.img", O_RDWR); + SAFE_IOCTL(dev_fd, XLOOP_GET_STATUS, &xloopinfoget); + + if (xloopinfoget.xlo_flags & XLO_FLAGS_READ_ONLY) + tst_brk(TCONF, "Current environment has unexpected XLO_FLAGS_READ_ONLY flag"); + + SAFE_TRUNCATE("test.img", NEW_SIZE); + SAFE_IOCTL(dev_fd, XLOOP_SET_CAPACITY); + + SAFE_LSEEK(dev_fd, 0, SEEK_SET); + + /*check that we can't write data beyond 5K into xloop device*/ + TEST(write(dev_fd, wrbuf, OLD_SIZE)); + if (TST_RET == NEW_SIZE) { + tst_res(TPASS, "XLOOP_SET_CAPACITY set xloop size to %d", NEW_SIZE); + } else { + tst_res(TFAIL, "XLOOP_SET_CAPACITY didn't set xloop size to %d, its size is %ld", + NEW_SIZE, TST_RET); + } + + TST_ASSERT_INT(sys_xloop_sizepath, NEW_SIZE/512); + + SAFE_CLOSE(file_fd); + tst_detach_device_by_fd(dev_path, dev_fd); + unlink("test.img"); + attach_flag = 0; +} + +static void setup(void) +{ + dev_num = tst_find_free_xloopdev(dev_path, sizeof(dev_path)); + if (dev_num < 0) + tst_brk(TBROK, "Failed to find free xloop device"); + + wrbuf = SAFE_MALLOC(OLD_SIZE); + memset(wrbuf, 'x', OLD_SIZE); + sprintf(sys_xloop_sizepath, "/sys/block/xloop%d/size", dev_num); + dev_fd = SAFE_OPEN(dev_path, O_RDWR); +} + +static void cleanup(void) +{ + if (dev_fd > 0) + SAFE_CLOSE(dev_fd); + if (file_fd > 0) + SAFE_CLOSE(file_fd); + if (wrbuf) + free(wrbuf); + if (attach_flag) + tst_detach_device(dev_path); +} + +static struct tst_test test = { + .setup = setup, + .cleanup = cleanup, + .test_all = verify_ioctl_xloop, + .needs_root = 1, + .needs_tmpdir = 1, + .needs_drivers = (const char *const []) { + "xloop", + "xloop_file_fmt_raw", + NULL + } +}; |