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[NET]: Make /proc/net per network namespace

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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>
This commit is contained in:
Eric W. Biederman
2007-09-12 12:01:34 +02:00
committed by David S. Miller
parent 07feaebfcc
commit 457c4cbc5a
84 changed files with 342 additions and 261 deletions
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5
net/atm/proc.c
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@@ -22,6 +22,7 @@
#include <linux/netdevice.h>
#include <linux/atmclip.h>
#include <linux/init.h> /* for __init */
#include <net/net_namespace.h>
#include <net/atmclip.h>
#include <asm/uaccess.h>
#include <asm/atomic.h>
@@ -475,7 +476,7 @@ static void atm_proc_dirs_remove(void)
if (e->dirent)
remove_proc_entry(e->name, atm_proc_root);
}
remove_proc_entry("net/atm", NULL);
remove_proc_entry("atm", init_net.proc_net);
}
int __init atm_proc_init(void)
@@ -483,7 +484,7 @@ int __init atm_proc_init(void)
static struct atm_proc_entry *e;
int ret;
atm_proc_root = proc_mkdir("net/atm",NULL);
atm_proc_root = proc_mkdir("atm", init_net.proc_net);
if (!atm_proc_root)
goto err_out;
for (e = atm_proc_ents; e->name; e++) {