On 27 Jan 2025, at 16:50, Anna Schumaker wrote:
> From: Anna Schumaker <anna.schumaker@xxxxxxxxxx>
>
> These files display useful information about the RPC client, such as the
> rpc version number, program name, and maximum number of connections
> allowed.
>
> Signed-off-by: Anna Schumaker <anna.schumaker@xxxxxxxxxx>
> ---
> net/sunrpc/sysfs.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 73 insertions(+)
>
> diff --git a/net/sunrpc/sysfs.c b/net/sunrpc/sysfs.c
> index dc3b7cd70000..0d382ab24f1f 100644
> --- a/net/sunrpc/sysfs.c
> +++ b/net/sunrpc/sysfs.c
> @@ -59,6 +59,16 @@ static struct kobject *rpc_sysfs_object_alloc(const char *name,
> return NULL;
> }
>
> +static inline struct rpc_clnt *
> +rpc_sysfs_client_kobj_get_clnt(struct kobject *kobj)
> +{
> + struct rpc_sysfs_client *c = container_of(kobj,
> + struct rpc_sysfs_client, kobject);
> + struct rpc_clnt *ret = c->clnt;
> +
> + return refcount_inc_not_zero(&ret->cl_count) ? ret : NULL;
> +}
> +
> static inline struct rpc_xprt *
> rpc_sysfs_xprt_kobj_get_xprt(struct kobject *kobj)
> {
> @@ -86,6 +96,51 @@ rpc_sysfs_xprt_switch_kobj_get_xprt(struct kobject *kobj)
> return xprt_switch_get(x->xprt_switch);
> }
>
> +static ssize_t rpc_sysfs_clnt_version_show(struct kobject *kobj,
> + struct kobj_attribute *attr,
> + char *buf)
> +{
> + struct rpc_clnt *clnt = rpc_sysfs_client_kobj_get_clnt(kobj);
> + ssize_t ret;
> +
> + if (!clnt)
> + return sprintf(buf, "<closed>\n");
> +
> + ret = sprintf(buf, "%u", clnt->cl_vers);
> + refcount_dec(&clnt->cl_count);
> + return ret;
> +}
> +
> +static ssize_t rpc_sysfs_clnt_program_show(struct kobject *kobj,
> + struct kobj_attribute *attr,
> + char *buf)
> +{
> + struct rpc_clnt *clnt = rpc_sysfs_client_kobj_get_clnt(kobj);
> + ssize_t ret;
> +
> + if (!clnt)
> + return sprintf(buf, "<closed>\n");
> +
> + ret = sprintf(buf, "%s", clnt->cl_program->name);
> + refcount_dec(&clnt->cl_count);
> + return ret;
> +}
> +
> +static ssize_t rpc_sysfs_clnt_max_connect_show(struct kobject *kobj,
> + struct kobj_attribute *attr,
> + char *buf)
> +{
> + struct rpc_clnt *clnt = rpc_sysfs_client_kobj_get_clnt(kobj);
> + ssize_t ret;
> +
> + if (!clnt)
> + return sprintf(buf, "<closed>\n");
> +
> + ret = sprintf(buf, "%u\n", clnt->cl_max_connect);
> + refcount_dec(&clnt->cl_count);
> + return ret;
> +}
> +
> static ssize_t rpc_sysfs_xprt_dstaddr_show(struct kobject *kobj,
> struct kobj_attribute *attr,
> char *buf)
> @@ -423,6 +478,23 @@ static const void *rpc_sysfs_xprt_namespace(const struct kobject *kobj)
> kobject)->xprt->xprt_net;
> }
>
> +static struct kobj_attribute rpc_sysfs_clnt_version = __ATTR(rpc_version,
> + 0444, rpc_sysfs_clnt_version_show, NULL);
> +
> +static struct kobj_attribute rpc_sysfs_clnt_program = __ATTR(program,
> + 0444, rpc_sysfs_clnt_program_show, NULL);
> +
> +static struct kobj_attribute rpc_sysfs_clnt_max_connect = __ATTR(max_connect,
> + 0644, rpc_sysfs_clnt_max_connect_show, NULL);
Wants 0444 here.
Ben
