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0b61f8a407
Remove the verbose license text from XFS files and replace them with SPDX tags. This does not change the license of any of the code, merely refers to the common, up-to-date license files in LICENSES/ This change was mostly scripted. fs/xfs/Makefile and fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected and modified by the following command: for f in `git grep -l "GNU General" fs/xfs/` ; do echo $f cat $f | awk -f hdr.awk > $f.new mv -f $f.new $f done And the hdr.awk script that did the modification (including detecting the difference between GPL-2.0 and GPL-2.0+ licenses) is as follows: $ cat hdr.awk BEGIN { hdr = 1.0 tag = "GPL-2.0" str = "" } /^ \* This program is free software/ { hdr = 2.0; next } /any later version./ { tag = "GPL-2.0+" next } /^ \*\// { if (hdr > 0.0) { print "// SPDX-License-Identifier: " tag print str print $0 str="" hdr = 0.0 next } print $0 next } /^ \* / { if (hdr > 1.0) next if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 next } /^ \*/ { if (hdr > 0.0) next print $0 next } // { if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 } END { } $ Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
654 lines
13 KiB
C
654 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2014 Red Hat, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_sysfs.h"
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#include "xfs_log.h"
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#include "xfs_log_priv.h"
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#include "xfs_stats.h"
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#include "xfs_mount.h"
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struct xfs_sysfs_attr {
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struct attribute attr;
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ssize_t (*show)(struct kobject *kobject, char *buf);
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ssize_t (*store)(struct kobject *kobject, const char *buf,
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size_t count);
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};
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static inline struct xfs_sysfs_attr *
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to_attr(struct attribute *attr)
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{
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return container_of(attr, struct xfs_sysfs_attr, attr);
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}
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#define XFS_SYSFS_ATTR_RW(name) \
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static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RW(name)
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#define XFS_SYSFS_ATTR_RO(name) \
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static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RO(name)
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#define XFS_SYSFS_ATTR_WO(name) \
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static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_WO(name)
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#define ATTR_LIST(name) &xfs_sysfs_attr_##name.attr
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STATIC ssize_t
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xfs_sysfs_object_show(
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struct kobject *kobject,
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struct attribute *attr,
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char *buf)
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{
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struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
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return xfs_attr->show ? xfs_attr->show(kobject, buf) : 0;
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}
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STATIC ssize_t
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xfs_sysfs_object_store(
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struct kobject *kobject,
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struct attribute *attr,
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const char *buf,
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size_t count)
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{
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struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
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return xfs_attr->store ? xfs_attr->store(kobject, buf, count) : 0;
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}
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static const struct sysfs_ops xfs_sysfs_ops = {
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.show = xfs_sysfs_object_show,
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.store = xfs_sysfs_object_store,
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};
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/*
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* xfs_mount kobject. The mp kobject also serves as the per-mount parent object
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* that is identified by the fsname under sysfs.
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*/
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static inline struct xfs_mount *
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to_mp(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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return container_of(kobj, struct xfs_mount, m_kobj);
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}
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static struct attribute *xfs_mp_attrs[] = {
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NULL,
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};
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struct kobj_type xfs_mp_ktype = {
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.release = xfs_sysfs_release,
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.sysfs_ops = &xfs_sysfs_ops,
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.default_attrs = xfs_mp_attrs,
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};
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#ifdef DEBUG
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/* debug */
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STATIC ssize_t
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bug_on_assert_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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int ret;
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int val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val == 1)
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xfs_globals.bug_on_assert = true;
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else if (val == 0)
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xfs_globals.bug_on_assert = false;
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else
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return -EINVAL;
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return count;
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}
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STATIC ssize_t
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bug_on_assert_show(
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struct kobject *kobject,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.bug_on_assert ? 1 : 0);
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}
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XFS_SYSFS_ATTR_RW(bug_on_assert);
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STATIC ssize_t
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log_recovery_delay_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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int ret;
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int val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val < 0 || val > 60)
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return -EINVAL;
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xfs_globals.log_recovery_delay = val;
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return count;
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}
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STATIC ssize_t
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log_recovery_delay_show(
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struct kobject *kobject,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay);
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}
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XFS_SYSFS_ATTR_RW(log_recovery_delay);
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STATIC ssize_t
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mount_delay_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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int ret;
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int val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val < 0 || val > 60)
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return -EINVAL;
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xfs_globals.mount_delay = val;
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return count;
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}
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STATIC ssize_t
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mount_delay_show(
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struct kobject *kobject,
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char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.mount_delay);
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}
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XFS_SYSFS_ATTR_RW(mount_delay);
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static struct attribute *xfs_dbg_attrs[] = {
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ATTR_LIST(bug_on_assert),
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ATTR_LIST(log_recovery_delay),
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ATTR_LIST(mount_delay),
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NULL,
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};
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struct kobj_type xfs_dbg_ktype = {
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.release = xfs_sysfs_release,
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.sysfs_ops = &xfs_sysfs_ops,
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.default_attrs = xfs_dbg_attrs,
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};
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#endif /* DEBUG */
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/* stats */
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static inline struct xstats *
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to_xstats(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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return container_of(kobj, struct xstats, xs_kobj);
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}
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STATIC ssize_t
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stats_show(
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struct kobject *kobject,
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char *buf)
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{
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struct xstats *stats = to_xstats(kobject);
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return xfs_stats_format(stats->xs_stats, buf);
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}
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XFS_SYSFS_ATTR_RO(stats);
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STATIC ssize_t
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stats_clear_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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int ret;
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int val;
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struct xstats *stats = to_xstats(kobject);
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val != 1)
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return -EINVAL;
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xfs_stats_clearall(stats->xs_stats);
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return count;
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}
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XFS_SYSFS_ATTR_WO(stats_clear);
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static struct attribute *xfs_stats_attrs[] = {
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ATTR_LIST(stats),
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ATTR_LIST(stats_clear),
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NULL,
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};
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struct kobj_type xfs_stats_ktype = {
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.release = xfs_sysfs_release,
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.sysfs_ops = &xfs_sysfs_ops,
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.default_attrs = xfs_stats_attrs,
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};
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/* xlog */
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static inline struct xlog *
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to_xlog(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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return container_of(kobj, struct xlog, l_kobj);
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}
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STATIC ssize_t
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log_head_lsn_show(
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struct kobject *kobject,
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char *buf)
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{
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int cycle;
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int block;
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struct xlog *log = to_xlog(kobject);
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spin_lock(&log->l_icloglock);
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cycle = log->l_curr_cycle;
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block = log->l_curr_block;
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spin_unlock(&log->l_icloglock);
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return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
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}
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XFS_SYSFS_ATTR_RO(log_head_lsn);
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STATIC ssize_t
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log_tail_lsn_show(
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struct kobject *kobject,
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char *buf)
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{
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int cycle;
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int block;
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struct xlog *log = to_xlog(kobject);
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xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block);
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return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
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}
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XFS_SYSFS_ATTR_RO(log_tail_lsn);
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STATIC ssize_t
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reserve_grant_head_show(
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struct kobject *kobject,
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char *buf)
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{
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int cycle;
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int bytes;
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struct xlog *log = to_xlog(kobject);
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xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes);
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return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
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}
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XFS_SYSFS_ATTR_RO(reserve_grant_head);
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STATIC ssize_t
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write_grant_head_show(
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struct kobject *kobject,
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char *buf)
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{
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int cycle;
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int bytes;
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struct xlog *log = to_xlog(kobject);
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xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes);
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return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
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}
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XFS_SYSFS_ATTR_RO(write_grant_head);
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static struct attribute *xfs_log_attrs[] = {
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ATTR_LIST(log_head_lsn),
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ATTR_LIST(log_tail_lsn),
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ATTR_LIST(reserve_grant_head),
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ATTR_LIST(write_grant_head),
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NULL,
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};
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struct kobj_type xfs_log_ktype = {
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.release = xfs_sysfs_release,
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.sysfs_ops = &xfs_sysfs_ops,
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.default_attrs = xfs_log_attrs,
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};
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/*
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* Metadata IO error configuration
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*
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* The sysfs structure here is:
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* ...xfs/<dev>/error/<class>/<errno>/<error_attrs>
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*
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* where <class> allows us to discriminate between data IO and metadata IO,
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* and any other future type of IO (e.g. special inode or directory error
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* handling) we care to support.
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*/
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static inline struct xfs_error_cfg *
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to_error_cfg(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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return container_of(kobj, struct xfs_error_cfg, kobj);
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}
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static inline struct xfs_mount *
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err_to_mp(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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return container_of(kobj, struct xfs_mount, m_error_kobj);
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}
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static ssize_t
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max_retries_show(
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struct kobject *kobject,
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char *buf)
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{
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int retries;
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struct xfs_error_cfg *cfg = to_error_cfg(kobject);
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if (cfg->max_retries == XFS_ERR_RETRY_FOREVER)
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retries = -1;
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else
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retries = cfg->max_retries;
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return snprintf(buf, PAGE_SIZE, "%d\n", retries);
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}
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static ssize_t
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max_retries_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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struct xfs_error_cfg *cfg = to_error_cfg(kobject);
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int ret;
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int val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val < -1)
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return -EINVAL;
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if (val == -1)
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cfg->max_retries = XFS_ERR_RETRY_FOREVER;
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else
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cfg->max_retries = val;
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return count;
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}
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XFS_SYSFS_ATTR_RW(max_retries);
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static ssize_t
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retry_timeout_seconds_show(
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struct kobject *kobject,
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char *buf)
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{
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int timeout;
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struct xfs_error_cfg *cfg = to_error_cfg(kobject);
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if (cfg->retry_timeout == XFS_ERR_RETRY_FOREVER)
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timeout = -1;
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else
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timeout = jiffies_to_msecs(cfg->retry_timeout) / MSEC_PER_SEC;
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return snprintf(buf, PAGE_SIZE, "%d\n", timeout);
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}
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static ssize_t
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retry_timeout_seconds_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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struct xfs_error_cfg *cfg = to_error_cfg(kobject);
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int ret;
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int val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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/* 1 day timeout maximum, -1 means infinite */
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if (val < -1 || val > 86400)
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return -EINVAL;
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if (val == -1)
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cfg->retry_timeout = XFS_ERR_RETRY_FOREVER;
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else {
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cfg->retry_timeout = msecs_to_jiffies(val * MSEC_PER_SEC);
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ASSERT(msecs_to_jiffies(val * MSEC_PER_SEC) < LONG_MAX);
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}
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return count;
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}
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XFS_SYSFS_ATTR_RW(retry_timeout_seconds);
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static ssize_t
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fail_at_unmount_show(
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struct kobject *kobject,
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char *buf)
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{
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struct xfs_mount *mp = err_to_mp(kobject);
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return snprintf(buf, PAGE_SIZE, "%d\n", mp->m_fail_unmount);
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}
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static ssize_t
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fail_at_unmount_store(
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struct kobject *kobject,
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const char *buf,
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size_t count)
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{
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struct xfs_mount *mp = err_to_mp(kobject);
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int ret;
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int val;
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ret = kstrtoint(buf, 0, &val);
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if (ret)
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return ret;
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if (val < 0 || val > 1)
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return -EINVAL;
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mp->m_fail_unmount = val;
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return count;
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}
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XFS_SYSFS_ATTR_RW(fail_at_unmount);
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static struct attribute *xfs_error_attrs[] = {
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ATTR_LIST(max_retries),
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ATTR_LIST(retry_timeout_seconds),
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NULL,
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};
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static struct kobj_type xfs_error_cfg_ktype = {
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.release = xfs_sysfs_release,
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.sysfs_ops = &xfs_sysfs_ops,
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.default_attrs = xfs_error_attrs,
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};
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static struct kobj_type xfs_error_ktype = {
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.release = xfs_sysfs_release,
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.sysfs_ops = &xfs_sysfs_ops,
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};
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/*
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* Error initialization tables. These need to be ordered in the same
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* order as the enums used to index the array. All class init tables need to
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* define a "default" behaviour as the first entry, all other entries can be
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* empty.
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*/
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struct xfs_error_init {
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char *name;
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int max_retries;
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int retry_timeout; /* in seconds */
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};
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static const struct xfs_error_init xfs_error_meta_init[XFS_ERR_ERRNO_MAX] = {
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{ .name = "default",
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.max_retries = XFS_ERR_RETRY_FOREVER,
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.retry_timeout = XFS_ERR_RETRY_FOREVER,
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},
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{ .name = "EIO",
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.max_retries = XFS_ERR_RETRY_FOREVER,
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.retry_timeout = XFS_ERR_RETRY_FOREVER,
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},
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{ .name = "ENOSPC",
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.max_retries = XFS_ERR_RETRY_FOREVER,
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.retry_timeout = XFS_ERR_RETRY_FOREVER,
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},
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{ .name = "ENODEV",
|
|
.max_retries = 0, /* We can't recover from devices disappearing */
|
|
.retry_timeout = 0,
|
|
},
|
|
};
|
|
|
|
static int
|
|
xfs_error_sysfs_init_class(
|
|
struct xfs_mount *mp,
|
|
int class,
|
|
const char *parent_name,
|
|
struct xfs_kobj *parent_kobj,
|
|
const struct xfs_error_init init[])
|
|
{
|
|
struct xfs_error_cfg *cfg;
|
|
int error;
|
|
int i;
|
|
|
|
ASSERT(class < XFS_ERR_CLASS_MAX);
|
|
|
|
error = xfs_sysfs_init(parent_kobj, &xfs_error_ktype,
|
|
&mp->m_error_kobj, parent_name);
|
|
if (error)
|
|
return error;
|
|
|
|
for (i = 0; i < XFS_ERR_ERRNO_MAX; i++) {
|
|
cfg = &mp->m_error_cfg[class][i];
|
|
error = xfs_sysfs_init(&cfg->kobj, &xfs_error_cfg_ktype,
|
|
parent_kobj, init[i].name);
|
|
if (error)
|
|
goto out_error;
|
|
|
|
cfg->max_retries = init[i].max_retries;
|
|
if (init[i].retry_timeout == XFS_ERR_RETRY_FOREVER)
|
|
cfg->retry_timeout = XFS_ERR_RETRY_FOREVER;
|
|
else
|
|
cfg->retry_timeout = msecs_to_jiffies(
|
|
init[i].retry_timeout * MSEC_PER_SEC);
|
|
}
|
|
return 0;
|
|
|
|
out_error:
|
|
/* unwind the entries that succeeded */
|
|
for (i--; i >= 0; i--) {
|
|
cfg = &mp->m_error_cfg[class][i];
|
|
xfs_sysfs_del(&cfg->kobj);
|
|
}
|
|
xfs_sysfs_del(parent_kobj);
|
|
return error;
|
|
}
|
|
|
|
int
|
|
xfs_error_sysfs_init(
|
|
struct xfs_mount *mp)
|
|
{
|
|
int error;
|
|
|
|
/* .../xfs/<dev>/error/ */
|
|
error = xfs_sysfs_init(&mp->m_error_kobj, &xfs_error_ktype,
|
|
&mp->m_kobj, "error");
|
|
if (error)
|
|
return error;
|
|
|
|
error = sysfs_create_file(&mp->m_error_kobj.kobject,
|
|
ATTR_LIST(fail_at_unmount));
|
|
|
|
if (error)
|
|
goto out_error;
|
|
|
|
/* .../xfs/<dev>/error/metadata/ */
|
|
error = xfs_error_sysfs_init_class(mp, XFS_ERR_METADATA,
|
|
"metadata", &mp->m_error_meta_kobj,
|
|
xfs_error_meta_init);
|
|
if (error)
|
|
goto out_error;
|
|
|
|
return 0;
|
|
|
|
out_error:
|
|
xfs_sysfs_del(&mp->m_error_kobj);
|
|
return error;
|
|
}
|
|
|
|
void
|
|
xfs_error_sysfs_del(
|
|
struct xfs_mount *mp)
|
|
{
|
|
struct xfs_error_cfg *cfg;
|
|
int i, j;
|
|
|
|
for (i = 0; i < XFS_ERR_CLASS_MAX; i++) {
|
|
for (j = 0; j < XFS_ERR_ERRNO_MAX; j++) {
|
|
cfg = &mp->m_error_cfg[i][j];
|
|
|
|
xfs_sysfs_del(&cfg->kobj);
|
|
}
|
|
}
|
|
xfs_sysfs_del(&mp->m_error_meta_kobj);
|
|
xfs_sysfs_del(&mp->m_error_kobj);
|
|
}
|
|
|
|
struct xfs_error_cfg *
|
|
xfs_error_get_cfg(
|
|
struct xfs_mount *mp,
|
|
int error_class,
|
|
int error)
|
|
{
|
|
struct xfs_error_cfg *cfg;
|
|
|
|
if (error < 0)
|
|
error = -error;
|
|
|
|
switch (error) {
|
|
case EIO:
|
|
cfg = &mp->m_error_cfg[error_class][XFS_ERR_EIO];
|
|
break;
|
|
case ENOSPC:
|
|
cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENOSPC];
|
|
break;
|
|
case ENODEV:
|
|
cfg = &mp->m_error_cfg[error_class][XFS_ERR_ENODEV];
|
|
break;
|
|
default:
|
|
cfg = &mp->m_error_cfg[error_class][XFS_ERR_DEFAULT];
|
|
break;
|
|
}
|
|
|
|
return cfg;
|
|
}
|