mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
2bc4657c15
Now that sys_sysctl is a generic wrapper around /proc/sys .ctl_name and .strategy members of sysctl tables are dead code. Remove them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2007 IBM Corporation
|
|
*
|
|
* Author: Cedric Le Goater <clg@fr.ibm.com>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/nsproxy.h>
|
|
#include <linux/ipc_namespace.h>
|
|
#include <linux/sysctl.h>
|
|
|
|
/*
|
|
* Define the ranges various user-specified maximum values can
|
|
* be set to.
|
|
*/
|
|
#define MIN_MSGMAX 1 /* min value for msg_max */
|
|
#define MAX_MSGMAX HARD_MSGMAX /* max value for msg_max */
|
|
#define MIN_MSGSIZEMAX 128 /* min value for msgsize_max */
|
|
#define MAX_MSGSIZEMAX (8192*128) /* max value for msgsize_max */
|
|
|
|
#ifdef CONFIG_PROC_SYSCTL
|
|
static void *get_mq(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(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(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 = MAX_MSGMAX;
|
|
|
|
static int msg_maxsize_limit_min = MIN_MSGSIZEMAX;
|
|
static int msg_maxsize_limit_max = MAX_MSGSIZEMAX;
|
|
|
|
static 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,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static ctl_table mq_sysctl_dir[] = {
|
|
{
|
|
.procname = "mqueue",
|
|
.mode = 0555,
|
|
.child = mq_sysctls,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static 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);
|
|
}
|