mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 16:59:48 +07:00
b886d83c5b
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 version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
121 lines
2.7 KiB
C
121 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2007 IBM Corporation
|
|
*
|
|
* Author: Cedric Le Goater <clg@fr.ibm.com>
|
|
*/
|
|
|
|
#include <linux/nsproxy.h>
|
|
#include <linux/ipc_namespace.h>
|
|
#include <linux/sysctl.h>
|
|
|
|
#ifdef CONFIG_PROC_SYSCTL
|
|
static void *get_mq(struct ctl_table *table)
|
|
{
|
|
char *which = table->data;
|
|
struct ipc_namespace *ipc_ns = current->nsproxy->ipc_ns;
|
|
which = (which - (char *)&init_ipc_ns) + (char *)ipc_ns;
|
|
return which;
|
|
}
|
|
|
|
static int proc_mq_dointvec(struct ctl_table *table, int write,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct ctl_table mq_table;
|
|
memcpy(&mq_table, table, sizeof(mq_table));
|
|
mq_table.data = get_mq(table);
|
|
|
|
return proc_dointvec(&mq_table, write, buffer, lenp, ppos);
|
|
}
|
|
|
|
static int proc_mq_dointvec_minmax(struct ctl_table *table, int write,
|
|
void __user *buffer, size_t *lenp, loff_t *ppos)
|
|
{
|
|
struct ctl_table mq_table;
|
|
memcpy(&mq_table, table, sizeof(mq_table));
|
|
mq_table.data = get_mq(table);
|
|
|
|
return proc_dointvec_minmax(&mq_table, write, buffer,
|
|
lenp, ppos);
|
|
}
|
|
#else
|
|
#define proc_mq_dointvec NULL
|
|
#define proc_mq_dointvec_minmax NULL
|
|
#endif
|
|
|
|
static int msg_max_limit_min = MIN_MSGMAX;
|
|
static int msg_max_limit_max = HARD_MSGMAX;
|
|
|
|
static int msg_maxsize_limit_min = MIN_MSGSIZEMAX;
|
|
static int msg_maxsize_limit_max = HARD_MSGSIZEMAX;
|
|
|
|
static struct ctl_table mq_sysctls[] = {
|
|
{
|
|
.procname = "queues_max",
|
|
.data = &init_ipc_ns.mq_queues_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_mq_dointvec,
|
|
},
|
|
{
|
|
.procname = "msg_max",
|
|
.data = &init_ipc_ns.mq_msg_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_mq_dointvec_minmax,
|
|
.extra1 = &msg_max_limit_min,
|
|
.extra2 = &msg_max_limit_max,
|
|
},
|
|
{
|
|
.procname = "msgsize_max",
|
|
.data = &init_ipc_ns.mq_msgsize_max,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_mq_dointvec_minmax,
|
|
.extra1 = &msg_maxsize_limit_min,
|
|
.extra2 = &msg_maxsize_limit_max,
|
|
},
|
|
{
|
|
.procname = "msg_default",
|
|
.data = &init_ipc_ns.mq_msg_default,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_mq_dointvec_minmax,
|
|
.extra1 = &msg_max_limit_min,
|
|
.extra2 = &msg_max_limit_max,
|
|
},
|
|
{
|
|
.procname = "msgsize_default",
|
|
.data = &init_ipc_ns.mq_msgsize_default,
|
|
.maxlen = sizeof(int),
|
|
.mode = 0644,
|
|
.proc_handler = proc_mq_dointvec_minmax,
|
|
.extra1 = &msg_maxsize_limit_min,
|
|
.extra2 = &msg_maxsize_limit_max,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static struct ctl_table mq_sysctl_dir[] = {
|
|
{
|
|
.procname = "mqueue",
|
|
.mode = 0555,
|
|
.child = mq_sysctls,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static struct ctl_table mq_sysctl_root[] = {
|
|
{
|
|
.procname = "fs",
|
|
.mode = 0555,
|
|
.child = mq_sysctl_dir,
|
|
},
|
|
{}
|
|
};
|
|
|
|
struct ctl_table_header *mq_register_sysctl_table(void)
|
|
{
|
|
return register_sysctl_table(mq_sysctl_root);
|
|
}
|