2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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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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#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 struct 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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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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/* Don't export sysctls to unprivileged users */
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if (net->user_ns != &init_user_ns)
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table[0].procname = NULL;
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table[0].data = &net->unx.sysctl_max_dgram_qlen;
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net->unx.ctl = register_net_sysctl(net, "net/unix", 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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