[commits] [batman-adv] master: batman-adv: Warn about sysfs file access (5bbd4721)

postmaster at open-mesh.org postmaster at open-mesh.org
Thu Mar 28 17:21:07 CET 2019


Repository : ssh://git@open-mesh.org/batman-adv

On branch  : master

>---------------------------------------------------------------

commit 5bbd4721bfda46839addc9089135450d0e35f459
Author: Sven Eckelmann <sven at narfation.org>
Date:   Sun Mar 3 18:02:59 2019 +0100

    batman-adv: Warn about sysfs file access
    
    The sysfs files to read and modify the configuration settings were replaced
    by the batadv generic netlink family. They are also marked as obsolete in
    the ABI documentation. But not all users of this functionality might follow
    changes in the Documentation/ABI/obsolete/ folder. They might benefit from
    a warning messages about the deprecation of the functionality which they
    just tried to access
    
      batman_adv: [Deprecated]: batctl (pid 30381) Use of sysfs file "orig_interval".
      Use batadv genl family instead
    
    Signed-off-by: Sven Eckelmann <sven at narfation.org>


>---------------------------------------------------------------

5bbd4721bfda46839addc9089135450d0e35f459
 net/batman-adv/sysfs.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index a8abda02..80fc3253 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -7,6 +7,7 @@
 #include "sysfs.h"
 #include "main.h"
 
+#include <asm/current.h>
 #include <linux/atomic.h>
 #include <linux/compiler.h>
 #include <linux/device.h>
@@ -22,6 +23,7 @@
 #include <linux/rculist.h>
 #include <linux/rcupdate.h>
 #include <linux/rtnetlink.h>
+#include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/stddef.h>
 #include <linux/string.h>
@@ -40,6 +42,16 @@
 #include "network-coding.h"
 #include "soft-interface.h"
 
+/**
+ * batadv_sysfs_deprecated() - Log use of deprecated batadv sysfs access
+ * @attr: attribute which was accessed
+ */
+static void batadv_sysfs_deprecated(struct attribute *attr)
+{
+	pr_warn_ratelimited(DEPRECATED "%s (pid %d) Use of sysfs file \"%s\".\nUse batadv genl family instead",
+			    current->comm, task_pid_nr(current), attr->name);
+}
+
 static struct net_device *batadv_kobj_to_netdev(struct kobject *obj)
 {
 	struct device *dev = container_of(obj->parent, struct device, kobj);
@@ -129,6 +141,7 @@ ssize_t batadv_store_##_name(struct kobject *kobj,			\
 	struct batadv_priv *bat_priv = netdev_priv(net_dev);		\
 	ssize_t length;							\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	length = __batadv_store_bool_attr(buff, count, _post_func, attr,\
 					  &bat_priv->_name, net_dev);	\
 									\
@@ -143,6 +156,7 @@ ssize_t batadv_show_##_name(struct kobject *kobj,			\
 {									\
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);	\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	return sprintf(buff, "%s\n",					\
 		       atomic_read(&bat_priv->_name) == 0 ?		\
 		       "disabled" : "enabled");				\
@@ -166,6 +180,7 @@ ssize_t batadv_store_##_name(struct kobject *kobj,			\
 	struct batadv_priv *bat_priv = netdev_priv(net_dev);		\
 	ssize_t length;							\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	length = __batadv_store_uint_attr(buff, count, _min, _max,	\
 					  _post_func, attr,		\
 					  &bat_priv->_var, net_dev,	\
@@ -182,6 +197,7 @@ ssize_t batadv_show_##_name(struct kobject *kobj,			\
 {									\
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);	\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var));	\
 }									\
 
@@ -206,6 +222,7 @@ ssize_t batadv_store_vlan_##_name(struct kobject *kobj,			\
 					      attr, &vlan->_name,	\
 					      bat_priv->soft_iface);	\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	if (vlan->vid)							\
 		batadv_netlink_notify_vlan(bat_priv, vlan);		\
 	else								\
@@ -226,6 +243,7 @@ ssize_t batadv_show_vlan_##_name(struct kobject *kobj,			\
 			     atomic_read(&vlan->_name) == 0 ?		\
 			     "disabled" : "enabled");			\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	batadv_softif_vlan_put(vlan);					\
 	return res;							\
 }
@@ -247,6 +265,7 @@ ssize_t batadv_store_##_name(struct kobject *kobj,			\
 	struct batadv_priv *bat_priv;					\
 	ssize_t length;							\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);		\
 	if (!hard_iface)						\
 		return 0;						\
@@ -274,6 +293,7 @@ ssize_t batadv_show_##_name(struct kobject *kobj,			\
 	struct batadv_hard_iface *hard_iface;				\
 	ssize_t length;							\
 									\
+	batadv_sysfs_deprecated(attr);					\
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);		\
 	if (!hard_iface)						\
 		return 0;						\
@@ -418,6 +438,7 @@ static ssize_t batadv_show_bat_algo(struct kobject *kobj,
 {
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
 
+	batadv_sysfs_deprecated(attr);
 	return sprintf(buff, "%s\n", bat_priv->algo_ops->name);
 }
 
@@ -434,6 +455,8 @@ static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr,
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
 	int bytes_written;
 
+	batadv_sysfs_deprecated(attr);
+
 	/* GW mode is not available if the routing algorithm in use does not
 	 * implement the GW API
 	 */
@@ -468,6 +491,8 @@ static ssize_t batadv_store_gw_mode(struct kobject *kobj,
 	char *curr_gw_mode_str;
 	int gw_mode_tmp = -1;
 
+	batadv_sysfs_deprecated(attr);
+
 	/* toggling GW mode is allowed only if the routing algorithm in use
 	 * provides the GW API
 	 */
@@ -542,6 +567,8 @@ static ssize_t batadv_show_gw_sel_class(struct kobject *kobj,
 {
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
 
+	batadv_sysfs_deprecated(attr);
+
 	/* GW selection class is not available if the routing algorithm in use
 	 * does not implement the GW API
 	 */
@@ -562,6 +589,8 @@ static ssize_t batadv_store_gw_sel_class(struct kobject *kobj,
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
 	ssize_t length;
 
+	batadv_sysfs_deprecated(attr);
+
 	/* setting the GW selection class is allowed only if the routing
 	 * algorithm in use implements the GW API
 	 */
@@ -592,6 +621,8 @@ static ssize_t batadv_show_gw_bwidth(struct kobject *kobj,
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
 	u32 down, up;
 
+	batadv_sysfs_deprecated(attr);
+
 	down = atomic_read(&bat_priv->gw.bandwidth_down);
 	up = atomic_read(&bat_priv->gw.bandwidth_up);
 
@@ -607,6 +638,8 @@ static ssize_t batadv_store_gw_bwidth(struct kobject *kobj,
 	struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
 	ssize_t length;
 
+	batadv_sysfs_deprecated(attr);
+
 	if (buff[count - 1] == '\n')
 		buff[count - 1] = '\0';
 
@@ -631,6 +664,7 @@ static ssize_t batadv_show_isolation_mark(struct kobject *kobj,
 {
 	struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
 
+	batadv_sysfs_deprecated(attr);
 	return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark,
 		       bat_priv->isolation_mark_mask);
 }
@@ -654,6 +688,8 @@ static ssize_t batadv_store_isolation_mark(struct kobject *kobj,
 	u32 mark, mask;
 	char *mask_ptr;
 
+	batadv_sysfs_deprecated(attr);
+
 	/* parse the mask if it has been specified, otherwise assume the mask is
 	 * the biggest possible
 	 */
@@ -909,6 +945,8 @@ static ssize_t batadv_show_mesh_iface(struct kobject *kobj,
 	ssize_t length;
 	const char *ifname;
 
+	batadv_sysfs_deprecated(attr);
+
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);
 	if (!hard_iface)
 		return 0;
@@ -1013,6 +1051,8 @@ static ssize_t batadv_store_mesh_iface(struct kobject *kobj,
 	struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
 	struct batadv_store_mesh_work *store_work;
 
+	batadv_sysfs_deprecated(attr);
+
 	if (buff[count - 1] == '\n')
 		buff[count - 1] = '\0';
 
@@ -1044,6 +1084,8 @@ static ssize_t batadv_show_iface_status(struct kobject *kobj,
 	struct batadv_hard_iface *hard_iface;
 	ssize_t length;
 
+	batadv_sysfs_deprecated(attr);
+
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);
 	if (!hard_iface)
 		return 0;
@@ -1095,6 +1137,8 @@ static ssize_t batadv_store_throughput_override(struct kobject *kobj,
 	u32 old_tp_override;
 	bool ret;
 
+	batadv_sysfs_deprecated(attr);
+
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);
 	if (!hard_iface)
 		return -EINVAL;
@@ -1137,6 +1181,8 @@ static ssize_t batadv_show_throughput_override(struct kobject *kobj,
 	struct batadv_hard_iface *hard_iface;
 	u32 tp_override;
 
+	batadv_sysfs_deprecated(attr);
+
 	hard_iface = batadv_hardif_get_by_netdev(net_dev);
 	if (!hard_iface)
 		return -EINVAL;



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