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batman-adv: Mark debugfs functionality as deprecated 

CONFIG_BATMAN_ADV_DEBUGFS is disabled by default because debugfs is not
supported for batman-adv interfaces in any non-default netns. Any remaining
users of this interface should still be informed about the deprecation and
the generic netlink alternative.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Sven Eckelmann 2018-08-10 23:36:15 +02:00 committed by Simon Wunderlich
parent 138c72efbd
commit 00caf6a2b3
4 changed files with 50 additions and 0 deletions
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37
net/batman-adv/debugfs.c
View File

@ -47,8 +47,24 @@
static struct dentry *batadv_debugfs;
/**
* batadv_debugfs_deprecated() - Log use of deprecated batadv debugfs access
* @file: file which was accessed
* @alt: explanation what can be used as alternative
*/
void batadv_debugfs_deprecated(struct file *file, const char *alt)
{
struct dentry *dentry = file_dentry(file);
const char *name = dentry->d_name.name;
pr_warn_ratelimited(DEPRECATED "%s (pid %d) Use of debugfs file \"%s\".\n%s",
current->comm, task_pid_nr(current), name, alt);
}
static int batadv_algorithms_open(struct inode *inode, struct file *file)
{
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_ROUTING_ALGOS instead\n");
return single_open(file, batadv_algo_seq_print_text, NULL);
}
@ -56,6 +72,8 @@ static int neighbors_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_NEIGHBORS instead\n");
return single_open(file, batadv_hardif_neigh_seq_print_text, net_dev);
}
@ -63,6 +81,8 @@ static int batadv_originators_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_ORIGINATORS instead\n");
return single_open(file, batadv_orig_seq_print_text, net_dev);
}
@ -79,6 +99,8 @@ static int batadv_originators_hardif_open(struct inode *inode,
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_HARDIFS instead\n");
return single_open(file, batadv_orig_hardif_seq_print_text, net_dev);
}
@ -86,6 +108,8 @@ static int batadv_gateways_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_GATEWAYS instead\n");
return single_open(file, batadv_gw_client_seq_print_text, net_dev);
}
@ -93,6 +117,8 @@ static int batadv_transtable_global_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_TRANSTABLE_GLOBAL instead\n");
return single_open(file, batadv_tt_global_seq_print_text, net_dev);
}
@ -101,6 +127,8 @@ static int batadv_bla_claim_table_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_BLA_CLAIM instead\n");
return single_open(file, batadv_bla_claim_table_seq_print_text,
net_dev);
}
@ -110,6 +138,8 @@ static int batadv_bla_backbone_table_open(struct inode *inode,
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_BLA_BACKBONE instead\n");
return single_open(file, batadv_bla_backbone_table_seq_print_text,
net_dev);
}
@ -128,6 +158,8 @@ static int batadv_dat_cache_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_DAT_CACHE instead\n");
return single_open(file, batadv_dat_cache_seq_print_text, net_dev);
}
#endif
@ -136,6 +168,8 @@ static int batadv_transtable_local_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_TRANSTABLE_LOCAL instead\n");
return single_open(file, batadv_tt_local_seq_print_text, net_dev);
}
@ -149,6 +183,7 @@ static int batadv_nc_nodes_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file, "");
return single_open(file, batadv_nc_nodes_seq_print_text, net_dev);
}
#endif
@ -165,6 +200,8 @@ static int batadv_mcast_flags_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
batadv_debugfs_deprecated(file,
"Use genl command BATADV_CMD_GET_MCAST_FLAGS instead\n");
return single_open(file, batadv_mcast_flags_seq_print_text, net_dev);
}
#endif

6
net/batman-adv/debugfs.h
View File

@ -21,12 +21,14 @@
#include "main.h"
struct file;
struct net_device;
#define BATADV_DEBUGFS_SUBDIR "batman_adv"
#if IS_ENABLED(CONFIG_BATMAN_ADV_DEBUGFS)
void batadv_debugfs_deprecated(struct file *file, const char *alt);
void batadv_debugfs_init(void);
void batadv_debugfs_destroy(void);
int batadv_debugfs_add_meshif(struct net_device *dev);
@ -38,6 +40,10 @@ void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface);
#else
static inline void batadv_debugfs_deprecated(struct file *file, const char *alt)
{
}
static inline void batadv_debugfs_init(void)
{
}

3
net/batman-adv/icmp_socket.c
View File

@ -47,6 +47,7 @@
#include <linux/wait.h>
#include <uapi/linux/batadv_packet.h>
#include "debugfs.h"
#include "hard-interface.h"
#include "log.h"
#include "originator.h"
@ -74,6 +75,8 @@ static int batadv_socket_open(struct inode *inode, struct file *file)
if (!try_module_get(THIS_MODULE))
return -EBUSY;
batadv_debugfs_deprecated(file, "");
nonseekable_open(inode, file);
socket_client = kmalloc(sizeof(*socket_client), GFP_KERNEL);

4
net/batman-adv/log.c
View File

@ -40,6 +40,8 @@
#include <linux/wait.h>
#include <stdarg.h>
#include "debugfs.h"
#define BATADV_LOG_BUFF_MASK (batadv_log_buff_len - 1)
static const int batadv_log_buff_len = BATADV_LOG_BUF_LEN;
@ -115,6 +117,8 @@ static int batadv_log_open(struct inode *inode, struct file *file)
if (!try_module_get(THIS_MODULE))
return -EBUSY;
batadv_debugfs_deprecated(file, "");
nonseekable_open(inode, file);
file->private_data = inode->i_private;
return 0;