/*
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/*
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* linux/net/sunrpc/sysctl.c
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* linux/net/sunrpc/sysctl.c
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*
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*
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* Sysctl interface to sunrpc module. This is for debugging only now.
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* Sysctl interface to sunrpc module. This is for debugging only now.
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*
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*
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* I would prefer to register the sunrpc table below sys/net, but that's
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* I would prefer to register the sunrpc table below sys/net, but that's
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* impossible at the moment.
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* impossible at the moment.
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*/
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*/
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#include <linux/config.h>
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#include <linux/config.h>
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#include <linux/version.h>
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#include <linux/version.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/linkage.h>
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#include <linux/linkage.h>
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#include <linux/ctype.h>
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#include <linux/ctype.h>
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#include <linux/fs.h>
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#include <linux/fs.h>
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#include <linux/sysctl.h>
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#include <linux/sysctl.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include <asm/uaccess.h>
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#include <asm/uaccess.h>
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#include <linux/sunrpc/types.h>
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#include <linux/sunrpc/types.h>
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#include <linux/sunrpc/sched.h>
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#include <linux/sunrpc/sched.h>
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#include <linux/sunrpc/stats.h>
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#include <linux/sunrpc/stats.h>
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/*
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/*
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* Declare the debug flags here
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* Declare the debug flags here
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*/
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*/
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unsigned int rpc_debug;
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unsigned int rpc_debug;
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unsigned int nfs_debug;
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unsigned int nfs_debug;
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unsigned int nfsd_debug;
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unsigned int nfsd_debug;
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unsigned int nlm_debug;
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unsigned int nlm_debug;
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#ifdef RPC_DEBUG
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#ifdef RPC_DEBUG
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static struct ctl_table_header *sunrpc_table_header;
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static struct ctl_table_header *sunrpc_table_header;
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static ctl_table sunrpc_table[];
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static ctl_table sunrpc_table[];
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void
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void
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rpc_register_sysctl(void)
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rpc_register_sysctl(void)
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{
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{
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if (!sunrpc_table_header) {
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if (!sunrpc_table_header) {
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sunrpc_table_header = register_sysctl_table(sunrpc_table, 1);
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sunrpc_table_header = register_sysctl_table(sunrpc_table, 1);
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#ifdef CONFIG_PROC_FS
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#ifdef CONFIG_PROC_FS
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if (sunrpc_table[0].de)
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if (sunrpc_table[0].de)
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sunrpc_table[0].de->owner = THIS_MODULE;
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sunrpc_table[0].de->owner = THIS_MODULE;
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#endif
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#endif
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}
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}
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}
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}
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void
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void
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rpc_unregister_sysctl(void)
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rpc_unregister_sysctl(void)
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{
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{
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if (sunrpc_table_header) {
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if (sunrpc_table_header) {
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unregister_sysctl_table(sunrpc_table_header);
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unregister_sysctl_table(sunrpc_table_header);
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sunrpc_table_header = NULL;
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sunrpc_table_header = NULL;
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}
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}
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}
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}
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static int
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static int
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proc_dodebug(ctl_table *table, int write, struct file *file,
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proc_dodebug(ctl_table *table, int write, struct file *file,
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void *buffer, size_t *lenp)
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void *buffer, size_t *lenp)
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{
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{
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char tmpbuf[20], *p, c;
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char tmpbuf[20], *p, c;
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unsigned int value;
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unsigned int value;
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size_t left, len;
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size_t left, len;
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if ((file->f_pos && !write) || !*lenp) {
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if ((file->f_pos && !write) || !*lenp) {
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*lenp = 0;
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*lenp = 0;
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return 0;
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return 0;
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}
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}
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left = *lenp;
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left = *lenp;
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if (write) {
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if (write) {
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if (!access_ok(VERIFY_READ, buffer, left))
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if (!access_ok(VERIFY_READ, buffer, left))
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return -EFAULT;
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return -EFAULT;
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p = (char *) buffer;
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p = (char *) buffer;
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while (left && __get_user(c, p) >= 0 && isspace(c))
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while (left && __get_user(c, p) >= 0 && isspace(c))
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left--, p++;
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left--, p++;
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if (!left)
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if (!left)
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goto done;
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goto done;
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if (left > sizeof(tmpbuf) - 1)
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if (left > sizeof(tmpbuf) - 1)
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return -EINVAL;
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return -EINVAL;
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copy_from_user(tmpbuf, p, left);
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copy_from_user(tmpbuf, p, left);
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tmpbuf[left] = '\0';
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tmpbuf[left] = '\0';
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for (p = tmpbuf, value = 0; '0' <= *p && *p <= '9'; p++, left--)
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for (p = tmpbuf, value = 0; '0' <= *p && *p <= '9'; p++, left--)
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value = 10 * value + (*p - '0');
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value = 10 * value + (*p - '0');
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if (*p && !isspace(*p))
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if (*p && !isspace(*p))
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return -EINVAL;
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return -EINVAL;
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while (left && isspace(*p))
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while (left && isspace(*p))
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left--, p++;
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left--, p++;
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*(unsigned int *) table->data = value;
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*(unsigned int *) table->data = value;
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/* Display the RPC tasks on writing to rpc_debug */
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/* Display the RPC tasks on writing to rpc_debug */
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if (table->ctl_name == CTL_RPCDEBUG) {
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if (table->ctl_name == CTL_RPCDEBUG) {
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rpc_show_tasks();
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rpc_show_tasks();
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}
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}
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} else {
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} else {
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if (!access_ok(VERIFY_WRITE, buffer, left))
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if (!access_ok(VERIFY_WRITE, buffer, left))
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return -EFAULT;
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return -EFAULT;
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len = sprintf(tmpbuf, "%d", *(unsigned int *) table->data);
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len = sprintf(tmpbuf, "%d", *(unsigned int *) table->data);
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if (len > left)
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if (len > left)
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len = left;
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len = left;
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copy_to_user(buffer, tmpbuf, len);
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copy_to_user(buffer, tmpbuf, len);
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if ((left -= len) > 0) {
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if ((left -= len) > 0) {
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put_user('\n', (char *)buffer + len);
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put_user('\n', (char *)buffer + len);
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left--;
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left--;
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}
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}
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}
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}
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done:
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done:
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*lenp -= left;
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*lenp -= left;
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file->f_pos += *lenp;
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file->f_pos += *lenp;
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return 0;
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return 0;
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}
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}
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#define DIRENTRY(nam1, nam2, child) \
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#define DIRENTRY(nam1, nam2, child) \
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{CTL_##nam1, #nam2, NULL, 0, 0555, child }
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{CTL_##nam1, #nam2, NULL, 0, 0555, child }
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#define DBGENTRY(nam1, nam2) \
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#define DBGENTRY(nam1, nam2) \
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{CTL_##nam1##DEBUG, #nam2 "_debug", &nam2##_debug, sizeof(int),\
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{CTL_##nam1##DEBUG, #nam2 "_debug", &nam2##_debug, sizeof(int),\
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0644, NULL, &proc_dodebug}
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0644, NULL, &proc_dodebug}
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static ctl_table debug_table[] = {
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static ctl_table debug_table[] = {
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DBGENTRY(RPC, rpc),
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DBGENTRY(RPC, rpc),
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DBGENTRY(NFS, nfs),
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DBGENTRY(NFS, nfs),
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DBGENTRY(NFSD, nfsd),
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DBGENTRY(NFSD, nfsd),
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DBGENTRY(NLM, nlm),
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DBGENTRY(NLM, nlm),
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{0}
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{0}
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};
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};
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static ctl_table sunrpc_table[] = {
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static ctl_table sunrpc_table[] = {
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DIRENTRY(SUNRPC, sunrpc, debug_table),
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DIRENTRY(SUNRPC, sunrpc, debug_table),
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{0}
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{0}
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};
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};
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#endif
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#endif
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