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Add sysfs create attr w/ parent

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Add sysfs attribute creation that can provide the parent dir kobject
instead of always creating the sysfs object dir off of the main
per-mount dir.

Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2019-08-23 14:44:23 -07:00
parent ccb7c0bf4b
commit 2dde729791
2 changed files with 14 additions and 8 deletions
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11
kmod/src/sysfs.c
View File

@@ -131,9 +131,10 @@ void scoutfs_sysfs_init_attrs(struct super_block *sb,
* If this returns success then the file will be visible and show can
* be called until unmount.
*/
int scoutfs_sysfs_create_attrs(struct super_block *sb,
struct scoutfs_sysfs_attrs *ssa,
struct attribute **attrs, char *fmt, ...)
int scoutfs_sysfs_create_attrs_parent(struct super_block *sb,
struct kobject *parent,
struct scoutfs_sysfs_attrs *ssa,
struct attribute **attrs, char *fmt, ...)
{
va_list args;
size_t name_len;
@@ -174,8 +175,8 @@ int scoutfs_sysfs_create_attrs(struct super_block *sb,
goto out;
}
ret = kobject_init_and_add(&ssa->kobj, &ssa->ktype,
scoutfs_sysfs_sb_dir(sb), "%s", ssa->name);
ret = kobject_init_and_add(&ssa->kobj, &ssa->ktype, parent,
"%s", ssa->name);
out:
if (ret) {
kfree(ssa->name);

11
kmod/src/sysfs.h
View File

@@ -36,9 +36,14 @@ struct scoutfs_sysfs_attrs {
void scoutfs_sysfs_init_attrs(struct super_block *sb,
struct scoutfs_sysfs_attrs *ssa);
int scoutfs_sysfs_create_attrs(struct super_block *sb,
struct scoutfs_sysfs_attrs *ssa,
struct attribute **attrs, char *fmt, ...);
int scoutfs_sysfs_create_attrs_parent(struct super_block *sb,
struct kobject *parent,
struct scoutfs_sysfs_attrs *ssa,
struct attribute **attrs, char *fmt, ...);
#define scoutfs_sysfs_create_attrs(sb, ssa, attrs, fmt, args...) \
scoutfs_sysfs_create_attrs_parent(sb, scoutfs_sysfs_sb_dir(sb), \
ssa, attrs, fmt, ##args)
void scoutfs_sysfs_destroy_attrs(struct super_block *sb,
struct scoutfs_sysfs_attrs *ssa);