[LTP] [PATCH v2] syscalls/ioctl08: add file deduplication testcases
Christian Amann
camann@suse.com
Fri Mar 22 14:32:28 CET 2019
This adds tests for the ioctl request FIDEDUPERANGE
on a btrfs device.
These tests set the contents of two files, and checks
if the following entities are set correctly after
the ioctl call:
- errno (set by ioctl)
- number of deduplicated bytes
- status field of the file_dedupe_range_info struct
Signed-off-by: Christian Amann <camann@suse.com>
---
configure.ac | 1 +
m4/ltp-ioctl.m4 | 22 +++++
runtest/syscalls | 1 +
testcases/kernel/syscalls/ioctl/.gitignore | 1 +
testcases/kernel/syscalls/ioctl/ioctl08.c | 131 +++++++++++++++++++++++++++++
5 files changed, 156 insertions(+)
create mode 100644 m4/ltp-ioctl.m4
create mode 100644 testcases/kernel/syscalls/ioctl/ioctl08.c
diff --git a/configure.ac b/configure.ac
index f05db9d2e..6a16138bb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -236,6 +236,7 @@ LTP_CHECK_PERF_EVENT
LTP_CHECK_SYNCFS
LTP_CHECK_SYNC_FILE_RANGE
LTP_CHECK_FTS_H
+LTP_CHECK_FIDEDUPE
if test "x$with_numa" = xyes; then
LTP_CHECK_SYSCALL_NUMA
diff --git a/m4/ltp-ioctl.m4 b/m4/ltp-ioctl.m4
new file mode 100644
index 000000000..c7e3814c5
--- /dev/null
+++ b/m4/ltp-ioctl.m4
@@ -0,0 +1,22 @@
+dnl
+dnl Copyright (c) 2019 SUSE LLC
+dnl Author: Christian Amann <camann@suse.com>
+dnl
+dnl This program is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+dnl the GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+dnl
+
+AC_DEFUN([LTP_CHECK_FIDEDUPE],[
+AC_CHECK_TYPES([struct file_dedupe_range],,,[#include <linux/fs.h>])
+])
diff --git a/runtest/syscalls b/runtest/syscalls
index a13d51918..0f9f985b2 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -499,6 +499,7 @@ ioctl05 ioctl05
ioctl06 ioctl06
ioctl07 ioctl07
+ioctl08 ioctl08
inotify_init1_01 inotify_init1_01
inotify_init1_02 inotify_init1_02
diff --git a/testcases/kernel/syscalls/ioctl/.gitignore b/testcases/kernel/syscalls/ioctl/.gitignore
index 79516a17c..4d480a0ed 100644
--- a/testcases/kernel/syscalls/ioctl/.gitignore
+++ b/testcases/kernel/syscalls/ioctl/.gitignore
@@ -5,3 +5,4 @@
/ioctl05
/ioctl06
/ioctl07
+/ioctl08
diff --git a/testcases/kernel/syscalls/ioctl/ioctl08.c b/testcases/kernel/syscalls/ioctl/ioctl08.c
new file mode 100644
index 000000000..302482dd6
--- /dev/null
+++ b/testcases/kernel/syscalls/ioctl/ioctl08.c
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2019 SUSE LLC
+ * Author: Christian Amann <camann@suse.com>
+ *
+ */
+
+/*
+ * Tests the ioctl functionality to deduplicate fileranges using
+ * btrfs filesystem.
+ *
+ * 1) Sets the same contents for two files and deduplicates it.
+ * Deduplicates 3 bytes and set the status to
+ * FILE_DEDUPE_RANGE_SAME.
+ * 2) Sets different content for two files and tries to
+ * deduplicate it. 0 bytes get deduplicated and status is
+ * set to FILE_DEDUPE_RANGE_DIFFERS.
+ * 3) Sets same content for two files but sets the length to
+ * deduplicate to -1. ioctl(FIDEDUPERANGE) fails with EINVAL.
+ */
+
+#include <stdlib.h>
+#include "tst_test.h"
+#include <sys/ioctl.h>
+#include <errno.h>
+
+#ifdef HAVE_STRUCT_FILE_DEDUPE_RANGE
+#include <linux/fs.h>
+
+#define SUCCESS 0
+
+#define MNTPOINT "mnt_point"
+#define FILE_SRC_PATH MNTPOINT"/file_src"
+#define FILE_DEST_PATH MNTPOINT"/file_dest"
+
+static int fd_src;
+static int fd_dest;
+static struct file_dedupe_range *fdr;
+
+static struct tcase {
+ uint64_t src_length;
+ char *src_fcontents;
+ char *dest_fcontents;
+ int exp_err;
+ uint64_t bytes_deduped;
+ int status;
+} tcases[] = {
+ {3, "AAA", "AAA", SUCCESS, 3, FILE_DEDUPE_RANGE_SAME},
+ {3, "AAA", "AAB", SUCCESS, 0, FILE_DEDUPE_RANGE_DIFFERS},
+ {-1, "AAA", "AAA", EINVAL, 0, 0},
+};
+
+static void verify_ioctl(unsigned int n)
+{
+ struct tcase *tc = &tcases[n];
+
+ fd_src = SAFE_OPEN(FILE_SRC_PATH, O_RDWR | O_CREAT, 0664);
+ fd_dest = SAFE_OPEN(FILE_DEST_PATH, O_RDWR | O_CREAT, 0664);
+
+ SAFE_WRITE(1, fd_src, tc->src_fcontents, strlen(tc->src_fcontents));
+ SAFE_WRITE(1, fd_dest, tc->dest_fcontents, strlen(tc->dest_fcontents));
+
+ memset(fdr, 0, sizeof(struct file_dedupe_range) +
+ sizeof(struct file_dedupe_range_info));
+
+ fdr->src_length = tc->src_length;
+ fdr->dest_count = 1;
+ fdr->info[0].dest_fd = fd_dest;
+
+ TEST(ioctl(fd_src, FIDEDUPERANGE, fdr));
+
+ if (tc->exp_err != TST_ERR) {
+ tst_res(TFAIL,
+ "ioctl(FIDEDUPERANGE) ended with %s, expected %s",
+ tst_strerrno(TST_ERR), tst_strerrno(tc->exp_err));
+ return;
+ }
+
+ if (fdr->info[0].bytes_deduped != tc->bytes_deduped) {
+ tst_res(TFAIL,
+ "ioctl(FIDEDUPERANGE) deduplicated %lld bytes, expected %ld. Status: %d",
+ fdr->info[0].bytes_deduped, tc->bytes_deduped,
+ fdr->info[0].status);
+ return;
+ }
+
+ if (fdr->info[0].status != tc->status) {
+ tst_res(TFAIL,
+ "ioctl(FIDEDUPERANGE) status set to %d, expected %d",
+ fdr->info[0].status, tc->status);
+ return;
+ }
+
+ tst_res(TPASS, "ioctl(FIDEDUPERANGE) ended with %s as expected",
+ tst_strerrno(tc->exp_err));
+
+ SAFE_CLOSE(fd_dest);
+ SAFE_CLOSE(fd_src);
+}
+
+static void cleanup(void)
+{
+ if (fd_dest > 0)
+ SAFE_CLOSE(fd_dest);
+ if (fd_src > 0)
+ SAFE_CLOSE(fd_src);
+ if (fdr)
+ free(fdr);
+}
+
+static void setup(void)
+{
+ fdr = SAFE_MALLOC(sizeof(struct file_dedupe_range) +
+ sizeof(struct file_dedupe_range_info));
+}
+
+static struct tst_test test = {
+ .test = verify_ioctl,
+ .tcnt = ARRAY_SIZE(tcases),
+ .setup = setup,
+ .cleanup = cleanup,
+ .min_kver = "4.5",
+ .needs_root = 1,
+ .mount_device = 1,
+ .mntpoint = MNTPOINT,
+ .dev_fs_type = "btrfs",
+};
+#else
+ TST_TEST_TCONF(
+ "This system does not provide support for ioctl(FIDEDUPERANGE)");
+#endif
--
2.16.4
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