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5dd3df105b
This makes it clearer which sysctls are relative to your current network namespace. This makes it a little less error prone by not exposing sysctls for the initial network namespace in other namespaces. This is the same way we handle all of our other network interfaces to userspace and I can't honestly remember why we didn't do this for sysctls right from the start. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/*
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* NET4: Sysctl interface to net af_unix subsystem.
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*
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* Authors: Mike Shaver.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/sysctl.h>
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#include <net/af_unix.h>
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static ctl_table unix_table[] = {
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{
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.procname = "max_dgram_qlen",
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.data = &init_net.unx.sysctl_max_dgram_qlen,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{ }
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};
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static struct ctl_path unix_path[] = {
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{ .procname = "net", },
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{ .procname = "unix", },
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{ },
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};
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int __net_init unix_sysctl_register(struct net *net)
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{
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struct ctl_table *table;
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table = kmemdup(unix_table, sizeof(unix_table), GFP_KERNEL);
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if (table == NULL)
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goto err_alloc;
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table[0].data = &net->unx.sysctl_max_dgram_qlen;
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net->unx.ctl = register_net_sysctl_table(net, unix_path, table);
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if (net->unx.ctl == NULL)
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goto err_reg;
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return 0;
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err_reg:
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kfree(table);
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err_alloc:
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return -ENOMEM;
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}
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void unix_sysctl_unregister(struct net *net)
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{
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struct ctl_table *table;
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table = net->unx.ctl->ctl_table_arg;
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unregister_net_sysctl_table(net->unx.ctl);
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kfree(table);
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}
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