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scoutfs: add rid sysfs file

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Add a "rid" file along the "fsid" file in the per-mount sysfs dir that
gives the mounts rid.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2019-07-19 16:16:30 -07:00
committed by Zach Brown
parent ab7bde9e2c
commit 97f3971dcd
1 changed files with 12 additions and 1 deletions
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13
kmod/src/sysfs.c
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@@ -43,10 +43,20 @@ static ssize_t fsid_show(struct kobject *kobj, struct attribute *attr,
struct super_block *sb = KOBJ_TO_SB(kobj, sb_id_kobj);
struct scoutfs_super_block *super = &SCOUTFS_SB(sb)->super;
return snprintf(buf, PAGE_SIZE, "%llx\n", le64_to_cpu(super->hdr.fsid));
return snprintf(buf, PAGE_SIZE, "%016llx\n",
le64_to_cpu(super->hdr.fsid));
}
ATTR_FUNCS_RO(fsid);
static ssize_t rid_show(struct kobject *kobj, struct attribute *attr, char *buf)
{
struct super_block *sb = KOBJ_TO_SB(kobj, sb_id_kobj);
struct scoutfs_sb_info *sbi = SCOUTFS_SB(sb);
return snprintf(buf, PAGE_SIZE, "%016llx\n", sbi->rid);
}
ATTR_FUNCS_RO(rid);
/*
* ops are defined per type, not per attribute. To have attributes with
* different types that want different funcs we wrap them with a struct
@@ -82,6 +92,7 @@ static ssize_t attr_funcs_show(struct kobject *kobj, struct attribute *attr,
static struct attribute *sb_id_attrs[] = {
&fsid_attr_funcs.attr,
&rid_attr_funcs.attr,
NULL,
};
KTYPE(sb_id);