[MIPS] Update pnx8500-jbs_defconfig
[linux-2.6] / net / sunrpc / sysctl.c
1 /*
2  * linux/net/sunrpc/sysctl.c
3  *
4  * Sysctl interface to sunrpc module.
5  *
6  * I would prefer to register the sunrpc table below sys/net, but that's
7  * impossible at the moment.
8  */
9
10 #include <linux/types.h>
11 #include <linux/linkage.h>
12 #include <linux/ctype.h>
13 #include <linux/fs.h>
14 #include <linux/sysctl.h>
15 #include <linux/module.h>
16
17 #include <asm/uaccess.h>
18 #include <linux/sunrpc/types.h>
19 #include <linux/sunrpc/sched.h>
20 #include <linux/sunrpc/stats.h>
21 #include <linux/sunrpc/xprt.h>
22
23 /*
24  * Declare the debug flags here
25  */
26 unsigned int    rpc_debug;
27 unsigned int    nfs_debug;
28 unsigned int    nfsd_debug;
29 unsigned int    nlm_debug;
30
31 #ifdef RPC_DEBUG
32
33 static struct ctl_table_header *sunrpc_table_header;
34 static ctl_table                sunrpc_table[];
35
36 void
37 rpc_register_sysctl(void)
38 {
39         if (!sunrpc_table_header) {
40                 sunrpc_table_header = register_sysctl_table(sunrpc_table, 1);
41 #ifdef CONFIG_PROC_FS
42                 if (sunrpc_table[0].de)
43                         sunrpc_table[0].de->owner = THIS_MODULE;
44 #endif
45         }
46                         
47 }
48
49 void
50 rpc_unregister_sysctl(void)
51 {
52         if (sunrpc_table_header) {
53                 unregister_sysctl_table(sunrpc_table_header);
54                 sunrpc_table_header = NULL;
55         }
56 }
57
58 static int
59 proc_dodebug(ctl_table *table, int write, struct file *file,
60                                 void __user *buffer, size_t *lenp, loff_t *ppos)
61 {
62         char            tmpbuf[20], c, *s;
63         char __user *p;
64         unsigned int    value;
65         size_t          left, len;
66
67         if ((*ppos && !write) || !*lenp) {
68                 *lenp = 0;
69                 return 0;
70         }
71
72         left = *lenp;
73
74         if (write) {
75                 if (!access_ok(VERIFY_READ, buffer, left))
76                         return -EFAULT;
77                 p = buffer;
78                 while (left && __get_user(c, p) >= 0 && isspace(c))
79                         left--, p++;
80                 if (!left)
81                         goto done;
82
83                 if (left > sizeof(tmpbuf) - 1)
84                         return -EINVAL;
85                 if (copy_from_user(tmpbuf, p, left))
86                         return -EFAULT;
87                 tmpbuf[left] = '\0';
88
89                 for (s = tmpbuf, value = 0; '0' <= *s && *s <= '9'; s++, left--)
90                         value = 10 * value + (*s - '0');
91                 if (*s && !isspace(*s))
92                         return -EINVAL;
93                 while (left && isspace(*s))
94                         left--, s++;
95                 *(unsigned int *) table->data = value;
96                 /* Display the RPC tasks on writing to rpc_debug */
97                 if (table->ctl_name == CTL_RPCDEBUG) {
98                         rpc_show_tasks();
99                 }
100         } else {
101                 if (!access_ok(VERIFY_WRITE, buffer, left))
102                         return -EFAULT;
103                 len = sprintf(tmpbuf, "%d", *(unsigned int *) table->data);
104                 if (len > left)
105                         len = left;
106                 if (__copy_to_user(buffer, tmpbuf, len))
107                         return -EFAULT;
108                 if ((left -= len) > 0) {
109                         if (put_user('\n', (char __user *)buffer + len))
110                                 return -EFAULT;
111                         left--;
112                 }
113         }
114
115 done:
116         *lenp -= left;
117         *ppos += *lenp;
118         return 0;
119 }
120
121
122 static unsigned int min_slot_table_size = RPC_MIN_SLOT_TABLE;
123 static unsigned int max_slot_table_size = RPC_MAX_SLOT_TABLE;
124 static unsigned int xprt_min_resvport_limit = RPC_MIN_RESVPORT;
125 static unsigned int xprt_max_resvport_limit = RPC_MAX_RESVPORT;
126
127 static ctl_table debug_table[] = {
128         {
129                 .ctl_name       = CTL_RPCDEBUG,
130                 .procname       = "rpc_debug",
131                 .data           = &rpc_debug,
132                 .maxlen         = sizeof(int),
133                 .mode           = 0644,
134                 .proc_handler   = &proc_dodebug
135         }, 
136         {
137                 .ctl_name       = CTL_NFSDEBUG,
138                 .procname       = "nfs_debug",
139                 .data           = &nfs_debug,
140                 .maxlen         = sizeof(int),
141                 .mode           = 0644,
142                 .proc_handler   = &proc_dodebug
143         }, 
144         {
145                 .ctl_name       = CTL_NFSDDEBUG,
146                 .procname       = "nfsd_debug",
147                 .data           = &nfsd_debug,
148                 .maxlen         = sizeof(int),
149                 .mode           = 0644,
150                 .proc_handler   = &proc_dodebug
151         }, 
152         {
153                 .ctl_name       = CTL_NLMDEBUG,
154                 .procname       = "nlm_debug",
155                 .data           = &nlm_debug,
156                 .maxlen         = sizeof(int),
157                 .mode           = 0644,
158                 .proc_handler   = &proc_dodebug
159         }, 
160         {
161                 .ctl_name       = CTL_SLOTTABLE_UDP,
162                 .procname       = "udp_slot_table_entries",
163                 .data           = &xprt_udp_slot_table_entries,
164                 .maxlen         = sizeof(unsigned int),
165                 .mode           = 0644,
166                 .proc_handler   = &proc_dointvec_minmax,
167                 .strategy       = &sysctl_intvec,
168                 .extra1         = &min_slot_table_size,
169                 .extra2         = &max_slot_table_size
170         },
171         {
172                 .ctl_name       = CTL_SLOTTABLE_TCP,
173                 .procname       = "tcp_slot_table_entries",
174                 .data           = &xprt_tcp_slot_table_entries,
175                 .maxlen         = sizeof(unsigned int),
176                 .mode           = 0644,
177                 .proc_handler   = &proc_dointvec_minmax,
178                 .strategy       = &sysctl_intvec,
179                 .extra1         = &min_slot_table_size,
180                 .extra2         = &max_slot_table_size
181         },
182         {
183                 .ctl_name       = CTL_MIN_RESVPORT,
184                 .procname       = "min_resvport",
185                 .data           = &xprt_min_resvport,
186                 .maxlen         = sizeof(unsigned int),
187                 .mode           = 0644,
188                 .proc_handler   = &proc_dointvec_minmax,
189                 .strategy       = &sysctl_intvec,
190                 .extra1         = &xprt_min_resvport_limit,
191                 .extra2         = &xprt_max_resvport_limit
192         },
193         {
194                 .ctl_name       = CTL_MAX_RESVPORT,
195                 .procname       = "max_resvport",
196                 .data           = &xprt_max_resvport,
197                 .maxlen         = sizeof(unsigned int),
198                 .mode           = 0644,
199                 .proc_handler   = &proc_dointvec_minmax,
200                 .strategy       = &sysctl_intvec,
201                 .extra1         = &xprt_min_resvport_limit,
202                 .extra2         = &xprt_max_resvport_limit
203         },
204         { .ctl_name = 0 }
205 };
206
207 static ctl_table sunrpc_table[] = {
208         {
209                 .ctl_name       = CTL_SUNRPC,
210                 .procname       = "sunrpc",
211                 .mode           = 0555,
212                 .child          = debug_table
213         },
214         { .ctl_name = 0 }
215 };
216
217 #endif