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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric W. Biederman 2007-09-12 12:01:34 +02:00 • committed by David S. Miller
commit 457c4cbc5a
84 changed files with 342 additions and 261 deletions
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7
net/ipx/ipx_proc.c
View file

@ -9,6 +9,7 @@
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/seq_file.h>
#include <net/net_namespace.h>
#include <net/tcp_states.h>
#include <net/ipx.h>
@ -353,7 +354,7 @@ int __init ipx_proc_init(void)
struct proc_dir_entry *p;
int rc = -ENOMEM;
ipx_proc_dir = proc_mkdir("ipx", proc_net);
ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
if (!ipx_proc_dir)
goto out;
@ -381,7 +382,7 @@ out_socket:
out_route:
remove_proc_entry("interface", ipx_proc_dir);
out_interface:
remove_proc_entry("ipx", proc_net);
remove_proc_entry("ipx", init_net.proc_net);
goto out;
}
@ -390,7 +391,7 @@ void __exit ipx_proc_exit(void)
remove_proc_entry("interface", ipx_proc_dir);
remove_proc_entry("route", ipx_proc_dir);
remove_proc_entry("socket", ipx_proc_dir);
remove_proc_entry("ipx", proc_net);
remove_proc_entry("ipx", init_net.proc_net);
}
#else /* CONFIG_PROC_FS */