diff options
Diffstat (limited to 'kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_loop07.c')
-rw-r--r-- | kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_loop07.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_loop07.c b/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_loop07.c new file mode 100644 index 0000000..ce4b476 --- /dev/null +++ b/kernel/tests/testcases/kernel/syscalls/ioctl/ioctl_loop07.c @@ -0,0 +1,95 @@ +// 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 loopdevice LOOP_SET_STATUS64 + * and LOOP_GET_STATUS64. + * Test its lo_sizelimit field. If lo_sizelimit is 0,it means max + * available. If sizelimit is less than loop_size, loopsize will + * be truncated. + */ + +#include <stdio.h> +#include <unistd.h> +#include <sys/types.h> +#include <stdlib.h> +#include "lapi/loop.h" +#include "tst_test.h" + +static char dev_path[1024], sys_loop_sizepath[1024], sys_loop_sizelimitpath[1024]; +static int dev_num, dev_fd, file_fd, attach_flag; + +static struct tcase { + unsigned int set_sizelimit; + unsigned int exp_loopsize; + char *message; +} tcases[] = { + {1024 * 4096, 2048, "When sizelimit is greater than loopsize "}, + {1024 * 512, 1024, "When sizelimit is less than loopsize"}, +}; + +static void verify_ioctl_loop(unsigned int n) +{ + struct tcase *tc = &tcases[n]; + struct loop_info64 loopinfo, loopinfoget; + + tst_res(TINFO, "%s", tc->message); + memset(&loopinfo, 0, sizeof(loopinfo)); + memset(&loopinfoget, 0, sizeof(loopinfoget)); + + loopinfo.lo_sizelimit = tc->set_sizelimit; + TST_RETRY_FUNC(ioctl(dev_fd, LOOP_SET_STATUS64, &loopinfo), TST_RETVAL_EQ0); + + TST_ASSERT_INT(sys_loop_sizepath, tc->exp_loopsize); + TST_ASSERT_INT(sys_loop_sizelimitpath, tc->set_sizelimit); + SAFE_IOCTL(dev_fd, LOOP_GET_STATUS64, &loopinfoget); + if (loopinfoget.lo_sizelimit == tc->set_sizelimit) + tst_res(TPASS, "LOOP_GET_STATUS64 gets correct lo_sizelimit(%d)", tc->set_sizelimit); + else + tst_res(TFAIL, "LOOP_GET_STATUS64 gets wrong lo_sizelimit(%llu), expect %d", + loopinfoget.lo_sizelimit, tc->set_sizelimit); + /*Reset*/ + loopinfo.lo_sizelimit = 0; + TST_RETRY_FUNC(ioctl(dev_fd, LOOP_SET_STATUS, &loopinfo), TST_RETVAL_EQ0); +} + +static void setup(void) +{ + dev_num = tst_find_free_loopdev(dev_path, sizeof(dev_path)); + if (dev_num < 0) + tst_brk(TBROK, "Failed to find free loop device"); + + tst_fill_file("test.img", 0, 1024 * 1024, 1); + tst_attach_device(dev_path, "test.img"); + attach_flag = 1; + + sprintf(sys_loop_sizepath, "/sys/block/loop%d/size", dev_num); + sprintf(sys_loop_sizelimitpath, "/sys/block/loop%d/loop/sizelimit", dev_num); + + dev_fd = SAFE_OPEN(dev_path, O_RDWR); + tst_res(TINFO, "original loop size 2048 sectors"); +} + +static void cleanup(void) +{ + if (dev_fd > 0) + SAFE_CLOSE(dev_fd); + if (file_fd > 0) + SAFE_CLOSE(file_fd); + if (attach_flag) + tst_detach_device(dev_path); +} + +static struct tst_test test = { + .setup = setup, + .cleanup = cleanup, + .test = verify_ioctl_loop, + .tcnt = ARRAY_SIZE(tcases), + .needs_root = 1, + .needs_tmpdir = 1, + .needs_drivers = (const char *const []) { + "loop", + NULL + } +}; |