2 * linux/net/sunrpc/sysctl.c
4 * Sysctl interface to sunrpc module.
6 * I would prefer to register the sunrpc table below sys/net, but that's
7 * impossible at the moment.
10 #include <linux/config.h>
11 #include <linux/types.h>
12 #include <linux/linkage.h>
13 #include <linux/ctype.h>
15 #include <linux/sysctl.h>
16 #include <linux/module.h>
18 #include <asm/uaccess.h>
19 #include <linux/sunrpc/types.h>
20 #include <linux/sunrpc/sched.h>
21 #include <linux/sunrpc/stats.h>
22 #include <linux/sunrpc/xprt.h>
25 * Declare the debug flags here
27 unsigned int rpc_debug
;
28 unsigned int nfs_debug
;
29 unsigned int nfsd_debug
;
30 unsigned int nlm_debug
;
34 static struct ctl_table_header
*sunrpc_table_header
;
35 static ctl_table sunrpc_table
[];
38 rpc_register_sysctl(void)
40 if (!sunrpc_table_header
) {
41 sunrpc_table_header
= register_sysctl_table(sunrpc_table
, 1);
43 if (sunrpc_table
[0].de
)
44 sunrpc_table
[0].de
->owner
= THIS_MODULE
;
51 rpc_unregister_sysctl(void)
53 if (sunrpc_table_header
) {
54 unregister_sysctl_table(sunrpc_table_header
);
55 sunrpc_table_header
= NULL
;
60 proc_dodebug(ctl_table
*table
, int write
, struct file
*file
,
61 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
63 char tmpbuf
[20], c
, *s
;
68 if ((*ppos
&& !write
) || !*lenp
) {
76 if (!access_ok(VERIFY_READ
, buffer
, left
))
79 while (left
&& __get_user(c
, p
) >= 0 && isspace(c
))
84 if (left
> sizeof(tmpbuf
) - 1)
86 if (copy_from_user(tmpbuf
, p
, left
))
90 for (s
= tmpbuf
, value
= 0; '0' <= *s
&& *s
<= '9'; s
++, left
--)
91 value
= 10 * value
+ (*s
- '0');
92 if (*s
&& !isspace(*s
))
94 while (left
&& isspace(*s
))
96 *(unsigned int *) table
->data
= value
;
97 /* Display the RPC tasks on writing to rpc_debug */
98 if (table
->ctl_name
== CTL_RPCDEBUG
) {
102 if (!access_ok(VERIFY_WRITE
, buffer
, left
))
104 len
= sprintf(tmpbuf
, "%d", *(unsigned int *) table
->data
);
107 if (__copy_to_user(buffer
, tmpbuf
, len
))
109 if ((left
-= len
) > 0) {
110 if (put_user('\n', (char __user
*)buffer
+ len
))
122 unsigned int xprt_udp_slot_table_entries
= RPC_DEF_SLOT_TABLE
;
123 unsigned int xprt_tcp_slot_table_entries
= RPC_DEF_SLOT_TABLE
;
124 unsigned int xprt_min_resvport
= RPC_DEF_MIN_RESVPORT
;
125 EXPORT_SYMBOL(xprt_min_resvport
);
126 unsigned int xprt_max_resvport
= RPC_DEF_MAX_RESVPORT
;
127 EXPORT_SYMBOL(xprt_max_resvport
);
130 static unsigned int min_slot_table_size
= RPC_MIN_SLOT_TABLE
;
131 static unsigned int max_slot_table_size
= RPC_MAX_SLOT_TABLE
;
132 static unsigned int xprt_min_resvport_limit
= RPC_MIN_RESVPORT
;
133 static unsigned int xprt_max_resvport_limit
= RPC_MAX_RESVPORT
;
135 static ctl_table debug_table
[] = {
137 .ctl_name
= CTL_RPCDEBUG
,
138 .procname
= "rpc_debug",
140 .maxlen
= sizeof(int),
142 .proc_handler
= &proc_dodebug
145 .ctl_name
= CTL_NFSDEBUG
,
146 .procname
= "nfs_debug",
148 .maxlen
= sizeof(int),
150 .proc_handler
= &proc_dodebug
153 .ctl_name
= CTL_NFSDDEBUG
,
154 .procname
= "nfsd_debug",
156 .maxlen
= sizeof(int),
158 .proc_handler
= &proc_dodebug
161 .ctl_name
= CTL_NLMDEBUG
,
162 .procname
= "nlm_debug",
164 .maxlen
= sizeof(int),
166 .proc_handler
= &proc_dodebug
169 .ctl_name
= CTL_SLOTTABLE_UDP
,
170 .procname
= "udp_slot_table_entries",
171 .data
= &xprt_udp_slot_table_entries
,
172 .maxlen
= sizeof(unsigned int),
174 .proc_handler
= &proc_dointvec_minmax
,
175 .strategy
= &sysctl_intvec
,
176 .extra1
= &min_slot_table_size
,
177 .extra2
= &max_slot_table_size
180 .ctl_name
= CTL_SLOTTABLE_TCP
,
181 .procname
= "tcp_slot_table_entries",
182 .data
= &xprt_tcp_slot_table_entries
,
183 .maxlen
= sizeof(unsigned int),
185 .proc_handler
= &proc_dointvec_minmax
,
186 .strategy
= &sysctl_intvec
,
187 .extra1
= &min_slot_table_size
,
188 .extra2
= &max_slot_table_size
191 .ctl_name
= CTL_MIN_RESVPORT
,
192 .procname
= "min_resvport",
193 .data
= &xprt_min_resvport
,
194 .maxlen
= sizeof(unsigned int),
196 .proc_handler
= &proc_dointvec_minmax
,
197 .strategy
= &sysctl_intvec
,
198 .extra1
= &xprt_min_resvport_limit
,
199 .extra2
= &xprt_max_resvport_limit
202 .ctl_name
= CTL_MAX_RESVPORT
,
203 .procname
= "max_resvport",
204 .data
= &xprt_max_resvport
,
205 .maxlen
= sizeof(unsigned int),
207 .proc_handler
= &proc_dointvec_minmax
,
208 .strategy
= &sysctl_intvec
,
209 .extra1
= &xprt_min_resvport_limit
,
210 .extra2
= &xprt_max_resvport_limit
215 static ctl_table sunrpc_table
[] = {
217 .ctl_name
= CTL_SUNRPC
,
218 .procname
= "sunrpc",