[NET]: Make /proc/net per network namespace
This patch makes /proc/net per network namespace. It modifies the global
variables proc_net and proc_net_stat to be per network namespace.
The proc_net file helpers are modified to take a network namespace argument,
and all of their callers are fixed to pass &init_net for that argument.
This ensures that all of the /proc/net files are only visible and
usable in the initial network namespace until the code behind them
has been updated to be handle multiple network namespaces.
Making /proc/net per namespace is necessary as at least some files
in /proc/net depend upon the set of network devices which is per
network namespace, and even more files in /proc/net have contents
that are relevant to a single network namespace.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c
index 559a0d0..4fd4c468 100644
--- a/drivers/isdn/divert/divert_procfs.c
+++ b/drivers/isdn/divert/divert_procfs.c
@@ -17,6 +17,7 @@
#include <linux/fs.h>
#endif
#include <linux/isdnif.h>
+#include <net/net_namespace.h>
#include "isdn_divert.h"
@@ -284,12 +285,12 @@
init_waitqueue_head(&rd_queue);
#ifdef CONFIG_PROC_FS
- isdn_proc_entry = proc_mkdir("net/isdn", NULL);
+ isdn_proc_entry = proc_mkdir("isdn", init_net.proc_net);
if (!isdn_proc_entry)
return (-1);
isdn_divert_entry = create_proc_entry("divert", S_IFREG | S_IRUGO, isdn_proc_entry);
if (!isdn_divert_entry) {
- remove_proc_entry("net/isdn", NULL);
+ remove_proc_entry("isdn", init_net.proc_net);
return (-1);
}
isdn_divert_entry->proc_fops = &isdn_fops;
@@ -309,7 +310,7 @@
#ifdef CONFIG_PROC_FS
remove_proc_entry("divert", isdn_proc_entry);
- remove_proc_entry("net/isdn", NULL);
+ remove_proc_entry("isdn", init_net.proc_net);
#endif /* CONFIG_PROC_FS */
return (0);