@@ -534,6 +534,7 @@ ioctl_loop04 ioctl_loop04
ioctl_loop05 ioctl_loop05
ioctl_loop06 ioctl_loop06
ioctl_loop07 ioctl_loop07
+ioctl_loop08 ioctl_loop08
ioctl_ns01 ioctl_ns01
ioctl_ns02 ioctl_ns02
@@ -13,6 +13,7 @@
/ioctl_loop05
/ioctl_loop06
/ioctl_loop07
+/ioctl_loop08
/ioctl_ns01
/ioctl_ns02
/ioctl_ns03
new file mode 100644
@@ -0,0 +1,96 @@
+// 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 "ioctl_loop_support.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;
+ safe_set_status64(dev_fd, loopinfo);
+
+ check_sys_value(sys_loop_sizepath, tc->exp_loopsize);
+ check_sys_value(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;
+ safe_set_status64(dev_fd, loopinfo);
+}
+
+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);
+ 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
+ }
+};
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. Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com> --- runtest/syscalls | 1 + testcases/kernel/syscalls/ioctl/.gitignore | 1 + .../kernel/syscalls/ioctl/ioctl_loop08.c | 96 +++++++++++++++++++ 3 files changed, 98 insertions(+) create mode 100644 testcases/kernel/syscalls/ioctl/ioctl_loop08.c