^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * sysfs.c - sysfs support implementation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2005-2014 Nippon Telegraph and Telephone Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2014 HGST, Inc., a Western Digital Company.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Written by Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kobject.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "nilfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "mdt.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "sufile.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "cpfile.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "sysfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* /sys/fs/<nilfs>/ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static struct kset *nilfs_kset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define NILFS_SHOW_TIME(time_t_val, buf) ({ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct tm res; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) int count = 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) time64_to_tm(time_t_val, 0, &res); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) res.tm_year += 1900; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) res.tm_mon += 1; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) count = scnprintf(buf, PAGE_SIZE, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) "%ld-%.2d-%.2d %.2d:%.2d:%.2d\n", \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) res.tm_year, res.tm_mon, res.tm_mday, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) res.tm_hour, res.tm_min, res.tm_sec);\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) count; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define NILFS_DEV_INT_GROUP_OPS(name, parent_name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static ssize_t nilfs_##name##_attr_show(struct kobject *kobj, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct attribute *attr, char *buf) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct the_nilfs *nilfs = container_of(kobj->parent, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct the_nilfs, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) ns_##parent_name##_kobj); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct nilfs_##name##_attr *a = container_of(attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct nilfs_##name##_attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) attr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return a->show ? a->show(a, nilfs, buf) : 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static ssize_t nilfs_##name##_attr_store(struct kobject *kobj, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct attribute *attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) const char *buf, size_t len) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct the_nilfs *nilfs = container_of(kobj->parent, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct the_nilfs, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) ns_##parent_name##_kobj); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct nilfs_##name##_attr *a = container_of(attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct nilfs_##name##_attr, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) attr); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return a->store ? a->store(a, nilfs, buf, len) : 0; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static const struct sysfs_ops nilfs_##name##_attr_ops = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .show = nilfs_##name##_attr_show, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .store = nilfs_##name##_attr_store, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define NILFS_DEV_INT_GROUP_TYPE(name, parent_name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void nilfs_##name##_attr_release(struct kobject *kobj) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct nilfs_sysfs_##parent_name##_subgroups *subgroups = container_of(kobj, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct nilfs_sysfs_##parent_name##_subgroups, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) sg_##name##_kobj); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) complete(&subgroups->sg_##name##_kobj_unregister); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static struct kobj_type nilfs_##name##_ktype = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .default_attrs = nilfs_##name##_attrs, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .sysfs_ops = &nilfs_##name##_attr_ops, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .release = nilfs_##name##_attr_release, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define NILFS_DEV_INT_GROUP_FNS(name, parent_name) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int nilfs_sysfs_create_##name##_group(struct the_nilfs *nilfs) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct kobject *parent; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct kobject *kobj; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct completion *kobj_unregister; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct nilfs_sysfs_##parent_name##_subgroups *subgroups; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int err; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) subgroups = nilfs->ns_##parent_name##_subgroups; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) kobj = &subgroups->sg_##name##_kobj; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) kobj_unregister = &subgroups->sg_##name##_kobj_unregister; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) parent = &nilfs->ns_##parent_name##_kobj; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) kobj->kset = nilfs_kset; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) init_completion(kobj_unregister); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) err = kobject_init_and_add(kobj, &nilfs_##name##_ktype, parent, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #name); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (err) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) kobject_put(kobj); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return err; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) } \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static void nilfs_sysfs_delete_##name##_group(struct the_nilfs *nilfs) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) kobject_put(&nilfs->ns_##parent_name##_subgroups->sg_##name##_kobj); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * NILFS snapshot attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) nilfs_snapshot_inodes_count_show(struct nilfs_snapshot_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct nilfs_root *root, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return snprintf(buf, PAGE_SIZE, "%llu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) (unsigned long long)atomic64_read(&root->inodes_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) nilfs_snapshot_blocks_count_show(struct nilfs_snapshot_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct nilfs_root *root, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return snprintf(buf, PAGE_SIZE, "%llu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) (unsigned long long)atomic64_read(&root->blocks_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static const char snapshot_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) "The group contains details about mounted snapshot.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) "(1) inodes_count\n\tshow number of inodes for snapshot.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) "(2) blocks_count\n\tshow number of blocks for snapshot.\n\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) nilfs_snapshot_README_show(struct nilfs_snapshot_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct nilfs_root *root, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return snprintf(buf, PAGE_SIZE, snapshot_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) NILFS_SNAPSHOT_RO_ATTR(inodes_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) NILFS_SNAPSHOT_RO_ATTR(blocks_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) NILFS_SNAPSHOT_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static struct attribute *nilfs_snapshot_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) NILFS_SNAPSHOT_ATTR_LIST(inodes_count),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) NILFS_SNAPSHOT_ATTR_LIST(blocks_count),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) NILFS_SNAPSHOT_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static ssize_t nilfs_snapshot_attr_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct nilfs_root *root =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) container_of(kobj, struct nilfs_root, snapshot_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct nilfs_snapshot_attr *a =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) container_of(attr, struct nilfs_snapshot_attr, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return a->show ? a->show(a, root, buf) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static ssize_t nilfs_snapshot_attr_store(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) struct nilfs_root *root =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) container_of(kobj, struct nilfs_root, snapshot_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct nilfs_snapshot_attr *a =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) container_of(attr, struct nilfs_snapshot_attr, attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return a->store ? a->store(a, root, buf, len) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static void nilfs_snapshot_attr_release(struct kobject *kobj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct nilfs_root *root = container_of(kobj, struct nilfs_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) snapshot_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) complete(&root->snapshot_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static const struct sysfs_ops nilfs_snapshot_attr_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .show = nilfs_snapshot_attr_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .store = nilfs_snapshot_attr_store,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static struct kobj_type nilfs_snapshot_ktype = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) .default_attrs = nilfs_snapshot_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) .sysfs_ops = &nilfs_snapshot_attr_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) .release = nilfs_snapshot_attr_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int nilfs_sysfs_create_snapshot_group(struct nilfs_root *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) struct the_nilfs *nilfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) struct kobject *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) nilfs = root->nilfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) parent = &nilfs->ns_dev_subgroups->sg_mounted_snapshots_kobj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) root->snapshot_kobj.kset = nilfs_kset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) init_completion(&root->snapshot_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (root->cno == NILFS_CPTREE_CURRENT_CNO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) err = kobject_init_and_add(&root->snapshot_kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) &nilfs_snapshot_ktype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) &nilfs->ns_dev_kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) "current_checkpoint");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) err = kobject_init_and_add(&root->snapshot_kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) &nilfs_snapshot_ktype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) "%llu", root->cno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) kobject_put(&root->snapshot_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) void nilfs_sysfs_delete_snapshot_group(struct nilfs_root *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) kobject_put(&root->snapshot_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * NILFS mounted snapshots attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static const char mounted_snapshots_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) "The mounted_snapshots group contains group for\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) "every mounted snapshot.\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) nilfs_mounted_snapshots_README_show(struct nilfs_mounted_snapshots_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct the_nilfs *nilfs, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return snprintf(buf, PAGE_SIZE, mounted_snapshots_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) NILFS_MOUNTED_SNAPSHOTS_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static struct attribute *nilfs_mounted_snapshots_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) NILFS_MOUNTED_SNAPSHOTS_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) NILFS_DEV_INT_GROUP_OPS(mounted_snapshots, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) NILFS_DEV_INT_GROUP_TYPE(mounted_snapshots, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) NILFS_DEV_INT_GROUP_FNS(mounted_snapshots, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * NILFS checkpoints attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) nilfs_checkpoints_checkpoints_number_show(struct nilfs_checkpoints_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) __u64 ncheckpoints;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct nilfs_cpstat cpstat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) err = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) nilfs_err(nilfs->ns_sb, "unable to get checkpoint stat: err=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) ncheckpoints = cpstat.cs_ncps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return snprintf(buf, PAGE_SIZE, "%llu\n", ncheckpoints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) nilfs_checkpoints_snapshots_number_show(struct nilfs_checkpoints_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) __u64 nsnapshots;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct nilfs_cpstat cpstat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) err = nilfs_cpfile_get_stat(nilfs->ns_cpfile, &cpstat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) nilfs_err(nilfs->ns_sb, "unable to get checkpoint stat: err=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) nsnapshots = cpstat.cs_nsss;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return snprintf(buf, PAGE_SIZE, "%llu\n", nsnapshots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) nilfs_checkpoints_last_seg_checkpoint_show(struct nilfs_checkpoints_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) __u64 last_cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) spin_lock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) last_cno = nilfs->ns_last_cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) spin_unlock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) nilfs_checkpoints_next_checkpoint_show(struct nilfs_checkpoints_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) __u64 cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) cno = nilfs->ns_cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return snprintf(buf, PAGE_SIZE, "%llu\n", cno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static const char checkpoints_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) "The checkpoints group contains attributes that describe\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) "details about volume's checkpoints.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) "(1) checkpoints_number\n\tshow number of checkpoints on volume.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) "(2) snapshots_number\n\tshow number of snapshots on volume.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) "(3) last_seg_checkpoint\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) "\tshow checkpoint number of the latest segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) "(4) next_checkpoint\n\tshow next checkpoint number.\n\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) nilfs_checkpoints_README_show(struct nilfs_checkpoints_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct the_nilfs *nilfs, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return snprintf(buf, PAGE_SIZE, checkpoints_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) NILFS_CHECKPOINTS_RO_ATTR(checkpoints_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) NILFS_CHECKPOINTS_RO_ATTR(snapshots_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) NILFS_CHECKPOINTS_RO_ATTR(last_seg_checkpoint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) NILFS_CHECKPOINTS_RO_ATTR(next_checkpoint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) NILFS_CHECKPOINTS_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static struct attribute *nilfs_checkpoints_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) NILFS_CHECKPOINTS_ATTR_LIST(checkpoints_number),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) NILFS_CHECKPOINTS_ATTR_LIST(snapshots_number),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) NILFS_CHECKPOINTS_ATTR_LIST(last_seg_checkpoint),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) NILFS_CHECKPOINTS_ATTR_LIST(next_checkpoint),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) NILFS_CHECKPOINTS_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) NILFS_DEV_INT_GROUP_OPS(checkpoints, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) NILFS_DEV_INT_GROUP_TYPE(checkpoints, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) NILFS_DEV_INT_GROUP_FNS(checkpoints, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) * NILFS segments attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) nilfs_segments_segments_number_show(struct nilfs_segments_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return snprintf(buf, PAGE_SIZE, "%lu\n", nilfs->ns_nsegments);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) nilfs_segments_blocks_per_segment_show(struct nilfs_segments_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return snprintf(buf, PAGE_SIZE, "%lu\n", nilfs->ns_blocks_per_segment);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) nilfs_segments_clean_segments_show(struct nilfs_segments_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) unsigned long ncleansegs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) down_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return snprintf(buf, PAGE_SIZE, "%lu\n", ncleansegs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) nilfs_segments_dirty_segments_show(struct nilfs_segments_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct nilfs_sustat sustat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) err = nilfs_sufile_get_stat(nilfs->ns_sufile, &sustat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) nilfs_err(nilfs->ns_sb, "unable to get segment stat: err=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return snprintf(buf, PAGE_SIZE, "%llu\n", sustat.ss_ndirtysegs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) static const char segments_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) "The segments group contains attributes that describe\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) "details about volume's segments.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) "(1) segments_number\n\tshow number of segments on volume.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) "(2) blocks_per_segment\n\tshow number of blocks in segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) "(3) clean_segments\n\tshow count of clean segments.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) "(4) dirty_segments\n\tshow count of dirty segments.\n\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) nilfs_segments_README_show(struct nilfs_segments_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) return snprintf(buf, PAGE_SIZE, segments_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) NILFS_SEGMENTS_RO_ATTR(segments_number);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) NILFS_SEGMENTS_RO_ATTR(blocks_per_segment);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) NILFS_SEGMENTS_RO_ATTR(clean_segments);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) NILFS_SEGMENTS_RO_ATTR(dirty_segments);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) NILFS_SEGMENTS_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) static struct attribute *nilfs_segments_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) NILFS_SEGMENTS_ATTR_LIST(segments_number),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) NILFS_SEGMENTS_ATTR_LIST(blocks_per_segment),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) NILFS_SEGMENTS_ATTR_LIST(clean_segments),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) NILFS_SEGMENTS_ATTR_LIST(dirty_segments),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) NILFS_SEGMENTS_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) NILFS_DEV_INT_GROUP_OPS(segments, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) NILFS_DEV_INT_GROUP_TYPE(segments, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) NILFS_DEV_INT_GROUP_FNS(segments, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * NILFS segctor attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) nilfs_segctor_last_pseg_block_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) sector_t last_pseg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) spin_lock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) last_pseg = nilfs->ns_last_pseg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) spin_unlock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) return snprintf(buf, PAGE_SIZE, "%llu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) (unsigned long long)last_pseg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) nilfs_segctor_last_seg_sequence_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) u64 last_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) spin_lock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) last_seq = nilfs->ns_last_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) spin_unlock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) return snprintf(buf, PAGE_SIZE, "%llu\n", last_seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) nilfs_segctor_last_seg_checkpoint_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) __u64 last_cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) spin_lock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) last_cno = nilfs->ns_last_cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) spin_unlock(&nilfs->ns_last_segment_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) nilfs_segctor_current_seg_sequence_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) u64 seg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) seg_seq = nilfs->ns_seg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return snprintf(buf, PAGE_SIZE, "%llu\n", seg_seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) nilfs_segctor_current_last_full_seg_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) __u64 segnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) segnum = nilfs->ns_segnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return snprintf(buf, PAGE_SIZE, "%llu\n", segnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) nilfs_segctor_next_full_seg_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) __u64 nextnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) nextnum = nilfs->ns_nextnum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) return snprintf(buf, PAGE_SIZE, "%llu\n", nextnum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) nilfs_segctor_next_pseg_offset_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) unsigned long pseg_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) pseg_offset = nilfs->ns_pseg_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) return snprintf(buf, PAGE_SIZE, "%lu\n", pseg_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) nilfs_segctor_next_checkpoint_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) __u64 cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) cno = nilfs->ns_cno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) return snprintf(buf, PAGE_SIZE, "%llu\n", cno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) nilfs_segctor_last_seg_write_time_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) time64_t ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) ctime = nilfs->ns_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return NILFS_SHOW_TIME(ctime, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) nilfs_segctor_last_seg_write_time_secs_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) time64_t ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) ctime = nilfs->ns_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) return snprintf(buf, PAGE_SIZE, "%llu\n", ctime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) nilfs_segctor_last_nongc_write_time_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) time64_t nongc_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) nongc_ctime = nilfs->ns_nongc_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) return NILFS_SHOW_TIME(nongc_ctime, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) nilfs_segctor_last_nongc_write_time_secs_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) time64_t nongc_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) nongc_ctime = nilfs->ns_nongc_ctime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) return snprintf(buf, PAGE_SIZE, "%llu\n", nongc_ctime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) nilfs_segctor_dirty_data_blocks_count_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) u32 ndirtyblks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) down_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) ndirtyblks = atomic_read(&nilfs->ns_ndirtyblks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) up_read(&nilfs->ns_segctor_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) return snprintf(buf, PAGE_SIZE, "%u\n", ndirtyblks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) static const char segctor_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) "The segctor group contains attributes that describe\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) "segctor thread activity details.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) "(1) last_pseg_block\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) "\tshow start block number of the latest segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) "(2) last_seg_sequence\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) "\tshow sequence value of the latest segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) "(3) last_seg_checkpoint\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) "\tshow checkpoint number of the latest segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) "(4) current_seg_sequence\n\tshow segment sequence counter.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) "(5) current_last_full_seg\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) "\tshow index number of the latest full segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) "(6) next_full_seg\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) "\tshow index number of the full segment index to be used next.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) "(7) next_pseg_offset\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) "\tshow offset of next partial segment in the current full segment.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) "(8) next_checkpoint\n\tshow next checkpoint number.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) "(9) last_seg_write_time\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) "\tshow write time of the last segment in human-readable format.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) "(10) last_seg_write_time_secs\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) "\tshow write time of the last segment in seconds.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) "(11) last_nongc_write_time\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) "\tshow write time of the last segment not for cleaner operation "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) "in human-readable format.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) "(12) last_nongc_write_time_secs\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) "\tshow write time of the last segment not for cleaner operation "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) "in seconds.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) "(13) dirty_data_blocks_count\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) "\tshow number of dirty data blocks.\n\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) nilfs_segctor_README_show(struct nilfs_segctor_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) struct the_nilfs *nilfs, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return snprintf(buf, PAGE_SIZE, segctor_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) NILFS_SEGCTOR_RO_ATTR(last_pseg_block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) NILFS_SEGCTOR_RO_ATTR(last_seg_sequence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) NILFS_SEGCTOR_RO_ATTR(last_seg_checkpoint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) NILFS_SEGCTOR_RO_ATTR(current_seg_sequence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) NILFS_SEGCTOR_RO_ATTR(current_last_full_seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) NILFS_SEGCTOR_RO_ATTR(next_full_seg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) NILFS_SEGCTOR_RO_ATTR(next_pseg_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) NILFS_SEGCTOR_RO_ATTR(next_checkpoint);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) NILFS_SEGCTOR_RO_ATTR(last_seg_write_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) NILFS_SEGCTOR_RO_ATTR(last_seg_write_time_secs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) NILFS_SEGCTOR_RO_ATTR(last_nongc_write_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) NILFS_SEGCTOR_RO_ATTR(last_nongc_write_time_secs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) NILFS_SEGCTOR_RO_ATTR(dirty_data_blocks_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) NILFS_SEGCTOR_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) static struct attribute *nilfs_segctor_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) NILFS_SEGCTOR_ATTR_LIST(last_pseg_block),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) NILFS_SEGCTOR_ATTR_LIST(last_seg_sequence),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) NILFS_SEGCTOR_ATTR_LIST(last_seg_checkpoint),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) NILFS_SEGCTOR_ATTR_LIST(current_seg_sequence),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) NILFS_SEGCTOR_ATTR_LIST(current_last_full_seg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) NILFS_SEGCTOR_ATTR_LIST(next_full_seg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) NILFS_SEGCTOR_ATTR_LIST(next_pseg_offset),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) NILFS_SEGCTOR_ATTR_LIST(next_checkpoint),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) NILFS_SEGCTOR_ATTR_LIST(last_seg_write_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) NILFS_SEGCTOR_ATTR_LIST(last_seg_write_time_secs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) NILFS_SEGCTOR_ATTR_LIST(last_nongc_write_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) NILFS_SEGCTOR_ATTR_LIST(last_nongc_write_time_secs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) NILFS_SEGCTOR_ATTR_LIST(dirty_data_blocks_count),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) NILFS_SEGCTOR_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) NILFS_DEV_INT_GROUP_OPS(segctor, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) NILFS_DEV_INT_GROUP_TYPE(segctor, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) NILFS_DEV_INT_GROUP_FNS(segctor, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) * NILFS superblock attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) nilfs_superblock_sb_write_time_show(struct nilfs_superblock_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) time64_t sbwtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) down_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) sbwtime = nilfs->ns_sbwtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) up_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) return NILFS_SHOW_TIME(sbwtime, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) nilfs_superblock_sb_write_time_secs_show(struct nilfs_superblock_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) time64_t sbwtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) down_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) sbwtime = nilfs->ns_sbwtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) up_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) return snprintf(buf, PAGE_SIZE, "%llu\n", sbwtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) nilfs_superblock_sb_write_count_show(struct nilfs_superblock_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) unsigned int sbwcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) down_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) sbwcount = nilfs->ns_sbwcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) up_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return snprintf(buf, PAGE_SIZE, "%u\n", sbwcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) nilfs_superblock_sb_update_frequency_show(struct nilfs_superblock_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) unsigned int sb_update_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) down_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) sb_update_freq = nilfs->ns_sb_update_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) up_read(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) return snprintf(buf, PAGE_SIZE, "%u\n", sb_update_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) nilfs_superblock_sb_update_frequency_store(struct nilfs_superblock_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) unsigned int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) err = kstrtouint(skip_spaces(buf), 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) nilfs_err(nilfs->ns_sb, "unable to convert string: err=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) if (val < NILFS_SB_FREQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) val = NILFS_SB_FREQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) nilfs_warn(nilfs->ns_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) "superblock update frequency cannot be lesser than 10 seconds");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) down_write(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) nilfs->ns_sb_update_freq = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) up_write(&nilfs->ns_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) static const char sb_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) "The superblock group contains attributes that describe\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) "superblock's details.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) "(1) sb_write_time\n\tshow previous write time of super block "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) "in human-readable format.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) "(2) sb_write_time_secs\n\tshow previous write time of super block "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) "in seconds.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) "(3) sb_write_count\n\tshow write count of super block.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) "(4) sb_update_frequency\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) "\tshow/set interval of periodical update of superblock (in seconds).\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) "\tYou can set preferable frequency of superblock update by command:\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) "\t'echo <val> > /sys/fs/<nilfs>/<dev>/superblock/sb_update_frequency'\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) static ssize_t
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) nilfs_superblock_README_show(struct nilfs_superblock_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) struct the_nilfs *nilfs, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return snprintf(buf, PAGE_SIZE, sb_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) NILFS_SUPERBLOCK_RO_ATTR(sb_write_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) NILFS_SUPERBLOCK_RO_ATTR(sb_write_time_secs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) NILFS_SUPERBLOCK_RO_ATTR(sb_write_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) NILFS_SUPERBLOCK_RW_ATTR(sb_update_frequency);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) NILFS_SUPERBLOCK_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) static struct attribute *nilfs_superblock_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) NILFS_SUPERBLOCK_ATTR_LIST(sb_write_time),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) NILFS_SUPERBLOCK_ATTR_LIST(sb_write_time_secs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) NILFS_SUPERBLOCK_ATTR_LIST(sb_write_count),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) NILFS_SUPERBLOCK_ATTR_LIST(sb_update_frequency),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) NILFS_SUPERBLOCK_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) NILFS_DEV_INT_GROUP_OPS(superblock, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) NILFS_DEV_INT_GROUP_TYPE(superblock, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) NILFS_DEV_INT_GROUP_FNS(superblock, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) * NILFS device attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) ssize_t nilfs_dev_revision_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) struct nilfs_super_block **sbp = nilfs->ns_sbp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) u32 major = le32_to_cpu(sbp[0]->s_rev_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) u16 minor = le16_to_cpu(sbp[0]->s_minor_rev_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return snprintf(buf, PAGE_SIZE, "%d.%d\n", major, minor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) ssize_t nilfs_dev_blocksize_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) return snprintf(buf, PAGE_SIZE, "%u\n", nilfs->ns_blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) ssize_t nilfs_dev_device_size_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) struct nilfs_super_block **sbp = nilfs->ns_sbp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) u64 dev_size = le64_to_cpu(sbp[0]->s_dev_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) return snprintf(buf, PAGE_SIZE, "%llu\n", dev_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) ssize_t nilfs_dev_free_blocks_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) sector_t free_blocks = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) nilfs_count_free_blocks(nilfs, &free_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) return snprintf(buf, PAGE_SIZE, "%llu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) (unsigned long long)free_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) ssize_t nilfs_dev_uuid_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) struct nilfs_super_block **sbp = nilfs->ns_sbp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) return snprintf(buf, PAGE_SIZE, "%pUb\n", sbp[0]->s_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) static
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) ssize_t nilfs_dev_volume_name_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct nilfs_super_block **sbp = nilfs->ns_sbp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) return scnprintf(buf, sizeof(sbp[0]->s_volume_name), "%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) sbp[0]->s_volume_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) static const char dev_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) "The <device> group contains attributes that describe file system\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) "partition's details.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) "(1) revision\n\tshow NILFS file system revision.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) "(2) blocksize\n\tshow volume block size in bytes.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) "(3) device_size\n\tshow volume size in bytes.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) "(4) free_blocks\n\tshow count of free blocks on volume.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) "(5) uuid\n\tshow volume's UUID.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) "(6) volume_name\n\tshow volume's name.\n\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) static ssize_t nilfs_dev_README_show(struct nilfs_dev_attr *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) struct the_nilfs *nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) return snprintf(buf, PAGE_SIZE, dev_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) NILFS_DEV_RO_ATTR(revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) NILFS_DEV_RO_ATTR(blocksize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) NILFS_DEV_RO_ATTR(device_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) NILFS_DEV_RO_ATTR(free_blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) NILFS_DEV_RO_ATTR(uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) NILFS_DEV_RO_ATTR(volume_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) NILFS_DEV_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) static struct attribute *nilfs_dev_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) NILFS_DEV_ATTR_LIST(revision),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) NILFS_DEV_ATTR_LIST(blocksize),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) NILFS_DEV_ATTR_LIST(device_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) NILFS_DEV_ATTR_LIST(free_blocks),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) NILFS_DEV_ATTR_LIST(uuid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) NILFS_DEV_ATTR_LIST(volume_name),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) NILFS_DEV_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) static ssize_t nilfs_dev_attr_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) struct attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) struct the_nilfs *nilfs = container_of(kobj, struct the_nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) ns_dev_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) struct nilfs_dev_attr *a = container_of(attr, struct nilfs_dev_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) return a->show ? a->show(a, nilfs, buf) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) static ssize_t nilfs_dev_attr_store(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) const char *buf, size_t len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) struct the_nilfs *nilfs = container_of(kobj, struct the_nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) ns_dev_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) struct nilfs_dev_attr *a = container_of(attr, struct nilfs_dev_attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) return a->store ? a->store(a, nilfs, buf, len) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) static void nilfs_dev_attr_release(struct kobject *kobj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) struct the_nilfs *nilfs = container_of(kobj, struct the_nilfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) ns_dev_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) complete(&nilfs->ns_dev_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) static const struct sysfs_ops nilfs_dev_attr_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) .show = nilfs_dev_attr_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) .store = nilfs_dev_attr_store,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) static struct kobj_type nilfs_dev_ktype = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) .default_attrs = nilfs_dev_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) .sysfs_ops = &nilfs_dev_attr_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) .release = nilfs_dev_attr_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) int nilfs_sysfs_create_device_group(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) struct the_nilfs *nilfs = sb->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) size_t devgrp_size = sizeof(struct nilfs_sysfs_dev_subgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) nilfs->ns_dev_subgroups = kzalloc(devgrp_size, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) if (unlikely(!nilfs->ns_dev_subgroups)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) nilfs_err(sb, "unable to allocate memory for device group");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) goto failed_create_device_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) nilfs->ns_dev_kobj.kset = nilfs_kset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) init_completion(&nilfs->ns_dev_kobj_unregister);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) err = kobject_init_and_add(&nilfs->ns_dev_kobj, &nilfs_dev_ktype, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) "%s", sb->s_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) goto cleanup_dev_kobject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) err = nilfs_sysfs_create_mounted_snapshots_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) goto cleanup_dev_kobject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) err = nilfs_sysfs_create_checkpoints_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) goto delete_mounted_snapshots_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) err = nilfs_sysfs_create_segments_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) goto delete_checkpoints_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) err = nilfs_sysfs_create_superblock_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) goto delete_segments_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) err = nilfs_sysfs_create_segctor_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) goto delete_superblock_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) delete_superblock_group:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) nilfs_sysfs_delete_superblock_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) delete_segments_group:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) nilfs_sysfs_delete_segments_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) delete_checkpoints_group:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) nilfs_sysfs_delete_checkpoints_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) delete_mounted_snapshots_group:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) nilfs_sysfs_delete_mounted_snapshots_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) cleanup_dev_kobject:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) kobject_put(&nilfs->ns_dev_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) kfree(nilfs->ns_dev_subgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) failed_create_device_group:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) nilfs_sysfs_delete_mounted_snapshots_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) nilfs_sysfs_delete_checkpoints_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) nilfs_sysfs_delete_segments_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) nilfs_sysfs_delete_superblock_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) nilfs_sysfs_delete_segctor_group(nilfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) kobject_del(&nilfs->ns_dev_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) kobject_put(&nilfs->ns_dev_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) kfree(nilfs->ns_dev_subgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) /************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) * NILFS feature attrs *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) ************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) static ssize_t nilfs_feature_revision_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) struct attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) return snprintf(buf, PAGE_SIZE, "%d.%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) NILFS_CURRENT_REV, NILFS_MINOR_REV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) static const char features_readme_str[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) "The features group contains attributes that describe NILFS file\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) "system driver features.\n\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) "(1) revision\n\tshow current revision of NILFS file system driver.\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) static ssize_t nilfs_feature_README_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) return snprintf(buf, PAGE_SIZE, features_readme_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) NILFS_FEATURE_RO_ATTR(revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) NILFS_FEATURE_RO_ATTR(README);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) static struct attribute *nilfs_feature_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) NILFS_FEATURE_ATTR_LIST(revision),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) NILFS_FEATURE_ATTR_LIST(README),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) static const struct attribute_group nilfs_feature_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) .name = "features",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) .attrs = nilfs_feature_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) int __init nilfs_sysfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) nilfs_kset = kset_create_and_add(NILFS_ROOT_GROUP_NAME, NULL, fs_kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) if (!nilfs_kset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) nilfs_err(NULL, "unable to create sysfs entry: err=%d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) goto failed_sysfs_init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) err = sysfs_create_group(&nilfs_kset->kobj, &nilfs_feature_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (unlikely(err)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) nilfs_err(NULL, "unable to create feature group: err=%d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) goto cleanup_sysfs_init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) cleanup_sysfs_init:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) kset_unregister(nilfs_kset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) failed_sysfs_init:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) void nilfs_sysfs_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) sysfs_remove_group(&nilfs_kset->kobj, &nilfs_feature_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) kset_unregister(nilfs_kset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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