From baff4e44b92aad363dcce176b907a369ee8b348e Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Tue, 15 Jul 2014 08:07:29 +1000 Subject: xfs: add xlog sysfs kobject and attribute handlers Embed a kobject into the xfs log data structure (xlog). This creates a 'log' subdirectory for every XFS mount instance in sysfs. The lifecycle of the log kobject is tied to the lifecycle of the log. Also define a set of generic attribute handlers associated with the log kobject in preparation for the addition of attributes. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/xfs_sysfs.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'fs/xfs/xfs_sysfs.c') diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c index ae9aa7a1a06a..88361d76f73a 100644 --- a/fs/xfs/xfs_sysfs.c +++ b/fs/xfs/xfs_sysfs.c @@ -18,6 +18,9 @@ #include "xfs.h" #include "xfs_sysfs.h" +#include "xfs_log_format.h" +#include "xfs_log.h" +#include "xfs_log_priv.h" struct xfs_sysfs_attr { struct attribute attr; @@ -47,3 +50,52 @@ to_attr(struct attribute *attr) struct kobj_type xfs_mp_ktype = { .release = xfs_sysfs_release, }; + +/* xlog */ + +static struct attribute *xfs_log_attrs[] = { + NULL, +}; + +static inline struct xlog * +to_xlog(struct kobject *kobject) +{ + struct xfs_kobj *kobj = to_kobj(kobject); + return container_of(kobj, struct xlog, l_kobj); +} + +STATIC ssize_t +xfs_log_show( + struct kobject *kobject, + struct attribute *attr, + char *buf) +{ + struct xlog *log = to_xlog(kobject); + struct xfs_sysfs_attr *xfs_attr = to_attr(attr); + + return xfs_attr->show ? xfs_attr->show(buf, log) : 0; +} + +STATIC ssize_t +xfs_log_store( + struct kobject *kobject, + struct attribute *attr, + const char *buf, + size_t count) +{ + struct xlog *log = to_xlog(kobject); + struct xfs_sysfs_attr *xfs_attr = to_attr(attr); + + return xfs_attr->store ? xfs_attr->store(buf, count, log) : 0; +} + +static struct sysfs_ops xfs_log_ops = { + .show = xfs_log_show, + .store = xfs_log_store, +}; + +struct kobj_type xfs_log_ktype = { + .release = xfs_sysfs_release, + .sysfs_ops = &xfs_log_ops, + .default_attrs = xfs_log_attrs, +}; -- cgit v1.2.3