Provide access to file generation number on Linux.
Add test coverage.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Signed-off-by: Ryan Moeller <freqlabs@FreeBSD.org>
Closes #12856
tests/zfs-tests/cmd/file_trunc/Makefile
tests/zfs-tests/cmd/file_write/Makefile
tests/zfs-tests/cmd/get_diff/Makefile
+ tests/zfs-tests/cmd/getversion/Makefile
tests/zfs-tests/cmd/largest_file/Makefile
tests/zfs-tests/cmd/libzfs_input_check/Makefile
tests/zfs-tests/cmd/mkbusy/Makefile
tests/zfs-tests/tests/functional/snapshot/Makefile
tests/zfs-tests/tests/functional/snapused/Makefile
tests/zfs-tests/tests/functional/sparse/Makefile
+ tests/zfs-tests/tests/functional/stat/Makefile
tests/zfs-tests/tests/functional/suid/Makefile
tests/zfs-tests/tests/functional/threadsappend/Makefile
tests/zfs-tests/tests/functional/tmpfile/Makefile
mode, offset, len);
}
+static int
+zpl_ioctl_getversion(struct file *filp, void __user *arg)
+{
+ uint32_t generation = file_inode(filp)->i_generation;
+
+ return (copy_to_user(arg, &generation, sizeof (generation)));
+}
+
#define ZFS_FL_USER_VISIBLE (FS_FL_USER_VISIBLE | ZFS_PROJINHERIT_FL)
#define ZFS_FL_USER_MODIFIABLE (FS_FL_USER_MODIFIABLE | ZFS_PROJINHERIT_FL)
zpl_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
+ case FS_IOC_GETVERSION:
+ return (zpl_ioctl_getversion(filp, (void *)arg));
case FS_IOC_GETFLAGS:
return (zpl_ioctl_getflags(filp, (void *)arg));
case FS_IOC_SETFLAGS:
zpl_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
+ case FS_IOC32_GETVERSION:
+ cmd = FS_IOC_GETVERSION;
+ break;
case FS_IOC32_GETFLAGS:
cmd = FS_IOC_GETFLAGS;
break;
tests = ['sparse_001_pos']
tags = ['functional', 'sparse']
+[tests/functional/stat]
+tests = ['stat_001_pos']
+tags = ['functional', 'stat']
+
[tests/functional/suid]
tests = ['suid_write_to_suid', 'suid_write_to_sgid', 'suid_write_to_suid_sgid',
'suid_write_to_none']
if BUILD_LINUX
SUBDIRS += \
+ getversion \
randfree_file \
user_ns_exec \
xattrtest
--- /dev/null
+/getversion
--- /dev/null
+include $(top_srcdir)/config/Rules.am
+
+pkgexecdir = $(datadir)/@PACKAGE@/zfs-tests/bin
+
+pkgexec_PROGRAMS = getversion
+getversion_SOURCES = getversion.c
--- /dev/null
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source. A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ */
+
+/*
+ * Copyright 2021 iXsystems, Inc.
+ */
+
+/*
+ * FreeBSD and macOS expose file generation number through stat(2) and stat(1).
+ * Linux exposes it instead through an ioctl.
+ */
+
+#include <sys/ioctl.h>
+#include <sys/fcntl.h>
+#include <linux/fs.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main(int argc, const char * const argv[])
+{
+ if (argc != 2)
+ errx(EXIT_FAILURE, "usage: %s filename", argv[0]);
+
+ int fd = open(argv[1], O_RDONLY);
+ if (fd == -1)
+ err(EXIT_FAILURE, "failed to open %s", argv[1]);
+
+ int gen = 0;
+ if (ioctl(fd, FS_IOC_GETVERSION, &gen) == -1)
+ err(EXIT_FAILURE, "FS_IOC_GETVERSION failed");
+
+ (void) close(fd);
+
+ (void) printf("%d\n", gen);
+
+ return (EXIT_SUCCESS);
+}
file_trunc
file_write
get_diff
+ getversion
largest_file
libzfs_input_check
mkbusy
esac
}
+function stat_generation #<path>
+{
+ typeset path=$1
+
+ case $(uname) in
+ Linux)
+ getversion "${path}"
+ ;;
+ *)
+ stat -f %v "${path}"
+ ;;
+ esac
+}
+
# Run a command as if it was being run in a TTY.
#
# Usage:
snapshot \
snapused \
sparse \
+ stat \
suid \
threadsappend \
trim \
--- /dev/null
+include $(top_srcdir)/config/Rules.am
+
+pkgdatadir = $(datadir)/@PACKAGE@/zfs-tests/tests/functional/stat
+
+dist_pkgdata_SCRIPTS = \
+ cleanup.ksh \
+ setup.ksh \
+ stat_001_pos.ksh
--- /dev/null
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2013 by Delphix. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+
+default_cleanup
--- /dev/null
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+# Use is subject to license terms.
+#
+
+#
+# Copyright (c) 2013 by Delphix. All rights reserved.
+#
+
+. $STF_SUITE/include/libtest.shlib
+
+DISK=${DISKS%% *}
+
+default_setup ${DISK}
--- /dev/null
+#! /bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or http://www.opensolaris.org/os/licensing.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright 2021 iXsystems, Inc.
+#
+
+. $STF_SUITE/include/libtest.shlib
+
+#
+# DESCRIPTION:
+#
+# Ensure znode generation number is accessible.
+#
+# STRATEGY:
+# 1) Create a file
+# 2) Verify that the znode generation number can be obtained
+# 3) Verify that the znode generation number is not empty
+#
+
+verify_runnable "both"
+
+function cleanup
+{
+ rm -f ${TESTFILE}
+}
+
+log_onexit cleanup
+
+log_assert "Ensure znode generation number is accessible."
+
+TESTFILE=${TESTDIR}/${TESTFILE0}
+
+log_must touch ${TESTFILE}
+log_must stat_generation ${TESTFILE}
+log_must test $(stat_generation ${TESTFILE}) -ne 0
+
+log_pass "Successfully obtained file znode generation number."
projects / mirror_zfs.git / commitdiff