]>
git.proxmox.com Git - mirror_ubuntu-focal-kernel.git/blob - net/sunrpc/sysctl.c
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/types.h>
11 #include <linux/linkage.h>
12 #include <linux/ctype.h>
14 #include <linux/sysctl.h>
15 #include <linux/module.h>
17 #include <linux/uaccess.h>
18 #include <linux/sunrpc/types.h>
19 #include <linux/sunrpc/sched.h>
20 #include <linux/sunrpc/stats.h>
21 #include <linux/sunrpc/svc_xprt.h>
26 * Declare the debug flags here
28 unsigned int rpc_debug
;
29 EXPORT_SYMBOL_GPL(rpc_debug
);
31 unsigned int nfs_debug
;
32 EXPORT_SYMBOL_GPL(nfs_debug
);
34 unsigned int nfsd_debug
;
35 EXPORT_SYMBOL_GPL(nfsd_debug
);
37 unsigned int nlm_debug
;
38 EXPORT_SYMBOL_GPL(nlm_debug
);
40 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
42 static struct ctl_table_header
*sunrpc_table_header
;
43 static struct ctl_table sunrpc_table
[];
46 rpc_register_sysctl(void)
48 if (!sunrpc_table_header
)
49 sunrpc_table_header
= register_sysctl_table(sunrpc_table
);
53 rpc_unregister_sysctl(void)
55 if (sunrpc_table_header
) {
56 unregister_sysctl_table(sunrpc_table_header
);
57 sunrpc_table_header
= NULL
;
61 static int proc_do_xprt(struct ctl_table
*table
, int write
,
62 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
67 if ((*ppos
&& !write
) || !*lenp
) {
71 len
= svc_print_xprts(tmpbuf
, sizeof(tmpbuf
));
72 return simple_read_from_buffer(buffer
, *lenp
, ppos
, tmpbuf
, len
);
76 proc_dodebug(struct ctl_table
*table
, int write
,
77 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
79 char tmpbuf
[20], c
, *s
= NULL
;
84 if ((*ppos
&& !write
) || !*lenp
) {
92 if (!access_ok(VERIFY_READ
, buffer
, left
))
95 while (left
&& __get_user(c
, p
) >= 0 && isspace(c
))
100 if (left
> sizeof(tmpbuf
) - 1)
102 if (copy_from_user(tmpbuf
, p
, left
))
106 value
= simple_strtol(tmpbuf
, &s
, 0);
108 left
-= (s
- tmpbuf
);
109 if (left
&& !isspace(*s
))
111 while (left
&& isspace(*s
))
115 *(unsigned int *) table
->data
= value
;
116 /* Display the RPC tasks on writing to rpc_debug */
117 if (strcmp(table
->procname
, "rpc_debug") == 0)
118 rpc_show_tasks(&init_net
);
120 len
= sprintf(tmpbuf
, "0x%04x", *(unsigned int *) table
->data
);
123 if (copy_to_user(buffer
, tmpbuf
, len
))
125 if ((left
-= len
) > 0) {
126 if (put_user('\n', (char __user
*)buffer
+ len
))
139 static struct ctl_table debug_table
[] = {
141 .procname
= "rpc_debug",
143 .maxlen
= sizeof(int),
145 .proc_handler
= proc_dodebug
148 .procname
= "nfs_debug",
150 .maxlen
= sizeof(int),
152 .proc_handler
= proc_dodebug
155 .procname
= "nfsd_debug",
157 .maxlen
= sizeof(int),
159 .proc_handler
= proc_dodebug
162 .procname
= "nlm_debug",
164 .maxlen
= sizeof(int),
166 .proc_handler
= proc_dodebug
169 .procname
= "transports",
172 .proc_handler
= proc_do_xprt
,
177 static struct ctl_table sunrpc_table
[] = {
179 .procname
= "sunrpc",