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Diffstat (limited to 'fs/nilfs2/sysfs.c')
-rw-r--r--fs/nilfs2/sysfs.c91
1 files changed, 49 insertions, 42 deletions
diff --git a/fs/nilfs2/sysfs.c b/fs/nilfs2/sysfs.c
index 62f8a7ac19c8..379d22e28ed6 100644
--- a/fs/nilfs2/sysfs.c
+++ b/fs/nilfs2/sysfs.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * sysfs.c - sysfs support implementation.
+ * Sysfs support implementation.
*
* Copyright (C) 2005-2014 Nippon Telegraph and Telephone Corporation.
* Copyright (C) 2014 HGST, Inc., a Western Digital Company.
@@ -57,7 +57,7 @@ static void nilfs_##name##_attr_release(struct kobject *kobj) \
complete(&subgroups->sg_##name##_kobj_unregister); \
} \
static struct kobj_type nilfs_##name##_ktype = { \
- .default_attrs = nilfs_##name##_attrs, \
+ .default_groups = nilfs_##name##_groups, \
.sysfs_ops = &nilfs_##name##_attr_ops, \
.release = nilfs_##name##_attr_release, \
}
@@ -95,7 +95,7 @@ static ssize_t
nilfs_snapshot_inodes_count_show(struct nilfs_snapshot_attr *attr,
struct nilfs_root *root, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%llu\n",
+ return sysfs_emit(buf, "%llu\n",
(unsigned long long)atomic64_read(&root->inodes_count));
}
@@ -103,7 +103,7 @@ static ssize_t
nilfs_snapshot_blocks_count_show(struct nilfs_snapshot_attr *attr,
struct nilfs_root *root, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%llu\n",
+ return sysfs_emit(buf, "%llu\n",
(unsigned long long)atomic64_read(&root->blocks_count));
}
@@ -116,7 +116,7 @@ static ssize_t
nilfs_snapshot_README_show(struct nilfs_snapshot_attr *attr,
struct nilfs_root *root, char *buf)
{
- return snprintf(buf, PAGE_SIZE, snapshot_readme_str);
+ return sysfs_emit(buf, snapshot_readme_str);
}
NILFS_SNAPSHOT_RO_ATTR(inodes_count);
@@ -129,6 +129,7 @@ static struct attribute *nilfs_snapshot_attrs[] = {
NILFS_SNAPSHOT_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_snapshot);
static ssize_t nilfs_snapshot_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
@@ -166,7 +167,7 @@ static const struct sysfs_ops nilfs_snapshot_attr_ops = {
};
static struct kobj_type nilfs_snapshot_ktype = {
- .default_attrs = nilfs_snapshot_attrs,
+ .default_groups = nilfs_snapshot_groups,
.sysfs_ops = &nilfs_snapshot_attr_ops,
.release = nilfs_snapshot_attr_release,
};
@@ -217,7 +218,7 @@ static ssize_t
nilfs_mounted_snapshots_README_show(struct nilfs_mounted_snapshots_attr *attr,
struct the_nilfs *nilfs, char *buf)
{
- return snprintf(buf, PAGE_SIZE, mounted_snapshots_readme_str);
+ return sysfs_emit(buf, mounted_snapshots_readme_str);
}
NILFS_MOUNTED_SNAPSHOTS_RO_ATTR(README);
@@ -226,6 +227,7 @@ static struct attribute *nilfs_mounted_snapshots_attrs[] = {
NILFS_MOUNTED_SNAPSHOTS_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_mounted_snapshots);
NILFS_DEV_INT_GROUP_OPS(mounted_snapshots, dev);
NILFS_DEV_INT_GROUP_TYPE(mounted_snapshots, dev);
@@ -255,7 +257,7 @@ nilfs_checkpoints_checkpoints_number_show(struct nilfs_checkpoints_attr *attr,
ncheckpoints = cpstat.cs_ncps;
- return snprintf(buf, PAGE_SIZE, "%llu\n", ncheckpoints);
+ return sysfs_emit(buf, "%llu\n", ncheckpoints);
}
static ssize_t
@@ -278,7 +280,7 @@ nilfs_checkpoints_snapshots_number_show(struct nilfs_checkpoints_attr *attr,
nsnapshots = cpstat.cs_nsss;
- return snprintf(buf, PAGE_SIZE, "%llu\n", nsnapshots);
+ return sysfs_emit(buf, "%llu\n", nsnapshots);
}
static ssize_t
@@ -292,7 +294,7 @@ nilfs_checkpoints_last_seg_checkpoint_show(struct nilfs_checkpoints_attr *attr,
last_cno = nilfs->ns_last_cno;
spin_unlock(&nilfs->ns_last_segment_lock);
- return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno);
+ return sysfs_emit(buf, "%llu\n", last_cno);
}
static ssize_t
@@ -306,7 +308,7 @@ nilfs_checkpoints_next_checkpoint_show(struct nilfs_checkpoints_attr *attr,
cno = nilfs->ns_cno;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", cno);
+ return sysfs_emit(buf, "%llu\n", cno);
}
static const char checkpoints_readme_str[] =
@@ -322,7 +324,7 @@ static ssize_t
nilfs_checkpoints_README_show(struct nilfs_checkpoints_attr *attr,
struct the_nilfs *nilfs, char *buf)
{
- return snprintf(buf, PAGE_SIZE, checkpoints_readme_str);
+ return sysfs_emit(buf, checkpoints_readme_str);
}
NILFS_CHECKPOINTS_RO_ATTR(checkpoints_number);
@@ -339,6 +341,7 @@ static struct attribute *nilfs_checkpoints_attrs[] = {
NILFS_CHECKPOINTS_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_checkpoints);
NILFS_DEV_INT_GROUP_OPS(checkpoints, dev);
NILFS_DEV_INT_GROUP_TYPE(checkpoints, dev);
@@ -353,7 +356,7 @@ nilfs_segments_segments_number_show(struct nilfs_segments_attr *attr,
struct the_nilfs *nilfs,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%lu\n", nilfs->ns_nsegments);
+ return sysfs_emit(buf, "%lu\n", nilfs->ns_nsegments);
}
static ssize_t
@@ -361,7 +364,7 @@ nilfs_segments_blocks_per_segment_show(struct nilfs_segments_attr *attr,
struct the_nilfs *nilfs,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%lu\n", nilfs->ns_blocks_per_segment);
+ return sysfs_emit(buf, "%lu\n", nilfs->ns_blocks_per_segment);
}
static ssize_t
@@ -375,7 +378,7 @@ nilfs_segments_clean_segments_show(struct nilfs_segments_attr *attr,
ncleansegs = nilfs_sufile_get_ncleansegs(nilfs->ns_sufile);
up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
- return snprintf(buf, PAGE_SIZE, "%lu\n", ncleansegs);
+ return sysfs_emit(buf, "%lu\n", ncleansegs);
}
static ssize_t
@@ -395,7 +398,7 @@ nilfs_segments_dirty_segments_show(struct nilfs_segments_attr *attr,
return err;
}
- return snprintf(buf, PAGE_SIZE, "%llu\n", sustat.ss_ndirtysegs);
+ return sysfs_emit(buf, "%llu\n", sustat.ss_ndirtysegs);
}
static const char segments_readme_str[] =
@@ -411,7 +414,7 @@ nilfs_segments_README_show(struct nilfs_segments_attr *attr,
struct the_nilfs *nilfs,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, segments_readme_str);
+ return sysfs_emit(buf, segments_readme_str);
}
NILFS_SEGMENTS_RO_ATTR(segments_number);
@@ -428,6 +431,7 @@ static struct attribute *nilfs_segments_attrs[] = {
NILFS_SEGMENTS_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_segments);
NILFS_DEV_INT_GROUP_OPS(segments, dev);
NILFS_DEV_INT_GROUP_TYPE(segments, dev);
@@ -448,7 +452,7 @@ nilfs_segctor_last_pseg_block_show(struct nilfs_segctor_attr *attr,
last_pseg = nilfs->ns_last_pseg;
spin_unlock(&nilfs->ns_last_segment_lock);
- return snprintf(buf, PAGE_SIZE, "%llu\n",
+ return sysfs_emit(buf, "%llu\n",
(unsigned long long)last_pseg);
}
@@ -463,7 +467,7 @@ nilfs_segctor_last_seg_sequence_show(struct nilfs_segctor_attr *attr,
last_seq = nilfs->ns_last_seq;
spin_unlock(&nilfs->ns_last_segment_lock);
- return snprintf(buf, PAGE_SIZE, "%llu\n", last_seq);
+ return sysfs_emit(buf, "%llu\n", last_seq);
}
static ssize_t
@@ -477,7 +481,7 @@ nilfs_segctor_last_seg_checkpoint_show(struct nilfs_segctor_attr *attr,
last_cno = nilfs->ns_last_cno;
spin_unlock(&nilfs->ns_last_segment_lock);
- return snprintf(buf, PAGE_SIZE, "%llu\n", last_cno);
+ return sysfs_emit(buf, "%llu\n", last_cno);
}
static ssize_t
@@ -491,7 +495,7 @@ nilfs_segctor_current_seg_sequence_show(struct nilfs_segctor_attr *attr,
seg_seq = nilfs->ns_seg_seq;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", seg_seq);
+ return sysfs_emit(buf, "%llu\n", seg_seq);
}
static ssize_t
@@ -505,7 +509,7 @@ nilfs_segctor_current_last_full_seg_show(struct nilfs_segctor_attr *attr,
segnum = nilfs->ns_segnum;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", segnum);
+ return sysfs_emit(buf, "%llu\n", segnum);
}
static ssize_t
@@ -519,7 +523,7 @@ nilfs_segctor_next_full_seg_show(struct nilfs_segctor_attr *attr,
nextnum = nilfs->ns_nextnum;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", nextnum);
+ return sysfs_emit(buf, "%llu\n", nextnum);
}
static ssize_t
@@ -533,7 +537,7 @@ nilfs_segctor_next_pseg_offset_show(struct nilfs_segctor_attr *attr,
pseg_offset = nilfs->ns_pseg_offset;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%lu\n", pseg_offset);
+ return sysfs_emit(buf, "%lu\n", pseg_offset);
}
static ssize_t
@@ -547,7 +551,7 @@ nilfs_segctor_next_checkpoint_show(struct nilfs_segctor_attr *attr,
cno = nilfs->ns_cno;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", cno);
+ return sysfs_emit(buf, "%llu\n", cno);
}
static ssize_t
@@ -575,7 +579,7 @@ nilfs_segctor_last_seg_write_time_secs_show(struct nilfs_segctor_attr *attr,
ctime = nilfs->ns_ctime;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", ctime);
+ return sysfs_emit(buf, "%llu\n", ctime);
}
static ssize_t
@@ -603,7 +607,7 @@ nilfs_segctor_last_nongc_write_time_secs_show(struct nilfs_segctor_attr *attr,
nongc_ctime = nilfs->ns_nongc_ctime;
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", nongc_ctime);
+ return sysfs_emit(buf, "%llu\n", nongc_ctime);
}
static ssize_t
@@ -617,7 +621,7 @@ nilfs_segctor_dirty_data_blocks_count_show(struct nilfs_segctor_attr *attr,
ndirtyblks = atomic_read(&nilfs->ns_ndirtyblks);
up_read(&nilfs->ns_segctor_sem);
- return snprintf(buf, PAGE_SIZE, "%u\n", ndirtyblks);
+ return sysfs_emit(buf, "%u\n", ndirtyblks);
}
static const char segctor_readme_str[] =
@@ -654,7 +658,7 @@ static ssize_t
nilfs_segctor_README_show(struct nilfs_segctor_attr *attr,
struct the_nilfs *nilfs, char *buf)
{
- return snprintf(buf, PAGE_SIZE, segctor_readme_str);
+ return sysfs_emit(buf, segctor_readme_str);
}
NILFS_SEGCTOR_RO_ATTR(last_pseg_block);
@@ -689,6 +693,7 @@ static struct attribute *nilfs_segctor_attrs[] = {
NILFS_SEGCTOR_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_segctor);
NILFS_DEV_INT_GROUP_OPS(segctor, dev);
NILFS_DEV_INT_GROUP_TYPE(segctor, dev);
@@ -723,7 +728,7 @@ nilfs_superblock_sb_write_time_secs_show(struct nilfs_superblock_attr *attr,
sbwtime = nilfs->ns_sbwtime;
up_read(&nilfs->ns_sem);
- return snprintf(buf, PAGE_SIZE, "%llu\n", sbwtime);
+ return sysfs_emit(buf, "%llu\n", sbwtime);
}
static ssize_t
@@ -737,7 +742,7 @@ nilfs_superblock_sb_write_count_show(struct nilfs_superblock_attr *attr,
sbwcount = nilfs->ns_sbwcount;
up_read(&nilfs->ns_sem);
- return snprintf(buf, PAGE_SIZE, "%u\n", sbwcount);
+ return sysfs_emit(buf, "%u\n", sbwcount);
}
static ssize_t
@@ -751,7 +756,7 @@ nilfs_superblock_sb_update_frequency_show(struct nilfs_superblock_attr *attr,
sb_update_freq = nilfs->ns_sb_update_freq;
up_read(&nilfs->ns_sem);
- return snprintf(buf, PAGE_SIZE, "%u\n", sb_update_freq);
+ return sysfs_emit(buf, "%u\n", sb_update_freq);
}
static ssize_t
@@ -799,7 +804,7 @@ static ssize_t
nilfs_superblock_README_show(struct nilfs_superblock_attr *attr,
struct the_nilfs *nilfs, char *buf)
{
- return snprintf(buf, PAGE_SIZE, sb_readme_str);
+ return sysfs_emit(buf, sb_readme_str);
}
NILFS_SUPERBLOCK_RO_ATTR(sb_write_time);
@@ -816,6 +821,7 @@ static struct attribute *nilfs_superblock_attrs[] = {
NILFS_SUPERBLOCK_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_superblock);
NILFS_DEV_INT_GROUP_OPS(superblock, dev);
NILFS_DEV_INT_GROUP_TYPE(superblock, dev);
@@ -834,7 +840,7 @@ ssize_t nilfs_dev_revision_show(struct nilfs_dev_attr *attr,
u32 major = le32_to_cpu(sbp[0]->s_rev_level);
u16 minor = le16_to_cpu(sbp[0]->s_minor_rev_level);
- return snprintf(buf, PAGE_SIZE, "%d.%d\n", major, minor);
+ return sysfs_emit(buf, "%d.%d\n", major, minor);
}
static
@@ -842,7 +848,7 @@ ssize_t nilfs_dev_blocksize_show(struct nilfs_dev_attr *attr,
struct the_nilfs *nilfs,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%u\n", nilfs->ns_blocksize);
+ return sysfs_emit(buf, "%u\n", nilfs->ns_blocksize);
}
static
@@ -853,7 +859,7 @@ ssize_t nilfs_dev_device_size_show(struct nilfs_dev_attr *attr,
struct nilfs_super_block **sbp = nilfs->ns_sbp;
u64 dev_size = le64_to_cpu(sbp[0]->s_dev_size);
- return snprintf(buf, PAGE_SIZE, "%llu\n", dev_size);
+ return sysfs_emit(buf, "%llu\n", dev_size);
}
static
@@ -864,7 +870,7 @@ ssize_t nilfs_dev_free_blocks_show(struct nilfs_dev_attr *attr,
sector_t free_blocks = 0;
nilfs_count_free_blocks(nilfs, &free_blocks);
- return snprintf(buf, PAGE_SIZE, "%llu\n",
+ return sysfs_emit(buf, "%llu\n",
(unsigned long long)free_blocks);
}
@@ -875,7 +881,7 @@ ssize_t nilfs_dev_uuid_show(struct nilfs_dev_attr *attr,
{
struct nilfs_super_block **sbp = nilfs->ns_sbp;
- return snprintf(buf, PAGE_SIZE, "%pUb\n", sbp[0]->s_uuid);
+ return sysfs_emit(buf, "%pUb\n", sbp[0]->s_uuid);
}
static
@@ -903,7 +909,7 @@ static ssize_t nilfs_dev_README_show(struct nilfs_dev_attr *attr,
struct the_nilfs *nilfs,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, dev_readme_str);
+ return sysfs_emit(buf, dev_readme_str);
}
NILFS_DEV_RO_ATTR(revision);
@@ -924,6 +930,7 @@ static struct attribute *nilfs_dev_attrs[] = {
NILFS_DEV_ATTR_LIST(README),
NULL,
};
+ATTRIBUTE_GROUPS(nilfs_dev);
static ssize_t nilfs_dev_attr_show(struct kobject *kobj,
struct attribute *attr, char *buf)
@@ -961,7 +968,7 @@ static const struct sysfs_ops nilfs_dev_attr_ops = {
};
static struct kobj_type nilfs_dev_ktype = {
- .default_attrs = nilfs_dev_attrs,
+ .default_groups = nilfs_dev_groups,
.sysfs_ops = &nilfs_dev_attr_ops,
.release = nilfs_dev_attr_release,
};
@@ -1047,7 +1054,7 @@ void nilfs_sysfs_delete_device_group(struct the_nilfs *nilfs)
static ssize_t nilfs_feature_revision_show(struct kobject *kobj,
struct attribute *attr, char *buf)
{
- return snprintf(buf, PAGE_SIZE, "%d.%d\n",
+ return sysfs_emit(buf, "%d.%d\n",
NILFS_CURRENT_REV, NILFS_MINOR_REV);
}
@@ -1060,7 +1067,7 @@ static ssize_t nilfs_feature_README_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
- return snprintf(buf, PAGE_SIZE, features_readme_str);
+ return sysfs_emit(buf, features_readme_str);
}
NILFS_FEATURE_RO_ATTR(revision);
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-15 12:08:00 +0300