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/*
* Copyright (C) 2006 Jakub Vana
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup generic
* @{
*/
/** @file
*/
#include <sysinfo/sysinfo.h>
#include <mm/slab.h>
#include <print.h>
#include <syscall/copy.h>
sysinfo_item_t *_root = NULL;
static sysinfo_item_t *sysinfo_find_item(const char *name, sysinfo_item_t *subtree)
{
if (subtree == NULL)
return NULL;
while (subtree != NULL) {
int i = 0;
char *a = (char *) name;
char *b = subtree->name;
while ((a[i] == b[i]) && (b[i]))
i++;
if ((!a[i]) && (!b[i])) /* Last name in path matches */
return subtree;
if ((a[i] == '.') && (!b[i])) { /* Middle name in path matches */
if (subtree->subinfo_type == SYSINFO_SUBINFO_TABLE)
return sysinfo_find_item(a + i + 1, subtree->subinfo.table);
//if (subtree->subinfo_type == SYSINFO_SUBINFO_FUNCTION) /* Subinfo managed by subsystem */
// return NULL;
return NULL; /* No subinfo */
}
/* No matches try next */
subtree = subtree->next;
i = 0;
}
return NULL;
}
static sysinfo_item_t *sysinfo_create_path(const char *name, sysinfo_item_t **psubtree)
{
sysinfo_item_t *subtree;
subtree = *psubtree;
if (subtree == NULL) {
sysinfo_item_t *item = malloc(sizeof(sysinfo_item_t), 0);
int i = 0, j;
ASSERT(item);
*psubtree = item;
item->next = NULL;
item->val_type = SYSINFO_VAL_UNDEFINED;
item->subinfo.table = NULL;
while (name[i] && (name[i] != '.'))
i++;
item->name = malloc(i, 0);
ASSERT(item->name);
for (j = 0; j < i; j++)
item->name[j] = name[j];
item->name[j] = 0;
if (name[i]) { /* =='.' */
item->subinfo_type = SYSINFO_SUBINFO_TABLE;
return sysinfo_create_path(name + i + 1, &(item->subinfo.table));
}
item->subinfo_type = SYSINFO_SUBINFO_NONE;
return item;
}
while (subtree != NULL) {
int i = 0, j;
char *a = (char *) name;
char *b = subtree->name;
while ((a[i] == b[i]) && (b[i]))
i++;
if ((!a[i]) && (!b[i])) /* Last name in path matches */
return subtree;
if ((a[i] == '.') && (!b[i])) { /* Middle name in path matches */
if (subtree->subinfo_type == SYSINFO_SUBINFO_TABLE)
return sysinfo_create_path(a + i + 1, &(subtree->subinfo.table));
if (subtree->subinfo_type == SYSINFO_SUBINFO_NONE) {
subtree->subinfo_type = SYSINFO_SUBINFO_TABLE;
return sysinfo_create_path(a + i + 1,&(subtree->subinfo.table));
}
//if (subtree->subinfo_type == SYSINFO_SUBINFO_FUNCTION) /* Subinfo managed by subsystem */
// return NULL;
return NULL;
}
/* No matches try next or create new*/
if (subtree->next == NULL) {
sysinfo_item_t *item = malloc(sizeof(sysinfo_item_t), 0);
ASSERT(item);
subtree->next = item;
item->next = NULL;
item->val_type = SYSINFO_VAL_UNDEFINED;
item->subinfo.table = NULL;
i = 0;
while (name[i] && (name[i] != '.'))
i++;
item->name = malloc(i, 0);
ASSERT(item->name);
for (j = 0; j < i; j++)
item->name[j] = name[j];
item->name[j] = 0;
if(name[i]) { /* =='.' */
item->subinfo_type = SYSINFO_SUBINFO_TABLE;
return sysinfo_create_path(name + i + 1, &(item->subinfo.table));
}
item->subinfo_type = SYSINFO_SUBINFO_NONE;
return item;
} else {
subtree = subtree->next;
i = 0;
}
}
panic("Not reached\n");
return NULL;
}
void sysinfo_set_item_val(const char *name, sysinfo_item_t **root, unative_t val)
{
if (root == NULL)
root = &_root;
/* If already created create only returns pointer
If not, create it */
sysinfo_item_t *item = sysinfo_create_path(name, root);
if (item != NULL) { /* If in subsystem, unable to create or return so unable to set */
item->val.val=val;
item->val_type = SYSINFO_VAL_VAL;
}
}
void sysinfo_set_item_function(const char *name, sysinfo_item_t **root, sysinfo_val_fn_t fn)
{
if (root == NULL)
root = &_root;
/* If already created create only returns pointer
If not, create it */
sysinfo_item_t *item = sysinfo_create_path(name, root);
if (item != NULL) { /* If in subsystem, unable to create or return so unable to set */
item->val.fn=fn;
item->val_type = SYSINFO_VAL_FUNCTION;
}
}
void sysinfo_set_item_undefined(const char *name, sysinfo_item_t **root)
{
if (root == NULL)
root = &_root;
/* If already created create only returns pointer
If not, create it */
sysinfo_item_t *item = sysinfo_create_path(name, root);
if (item != NULL)
item->val_type = SYSINFO_VAL_UNDEFINED;
}
void sysinfo_dump(sysinfo_item_t **proot, int depth)
{
sysinfo_item_t *root;
if (proot == NULL)
proot = &_root;
root = *proot;
while (root != NULL) {
int i;
unative_t val = 0;
char *vtype = NULL;
for (i = 0; i < depth; i++)
printf(" ");
switch (root->val_type) {
case SYSINFO_VAL_UNDEFINED:
val = 0;
vtype = "UND";
break;
case SYSINFO_VAL_VAL:
val = root->val.val;
vtype = "VAL";
break;
case SYSINFO_VAL_FUNCTION:
val = ((sysinfo_val_fn_t) (root->val.fn)) (root);
vtype = "FUN";
break;
}
printf("%s %s val:%d(%x) sub:%s\n", root->name, vtype, val, val, (root->subinfo_type == SYSINFO_SUBINFO_NONE) ? "NON" : ((root->subinfo_type == SYSINFO_SUBINFO_TABLE) ? "TAB" : "FUN"));
if (root->subinfo_type == SYSINFO_SUBINFO_TABLE)
sysinfo_dump(&(root -> subinfo.table), depth + 1);
root = root->next;
}
}
sysinfo_rettype_t sysinfo_get_val(const char *name, sysinfo_item_t **root)
{
// TODO: Implement Subsystem subinfo (by function implemented subinfo)
sysinfo_rettype_t ret = {0, false};
if (root == NULL)
root = &_root;
sysinfo_item_t *item = sysinfo_find_item(name, *root);
if (item != NULL) {
if (item->val_type == SYSINFO_VAL_UNDEFINED)
return ret;
else
ret.valid = true;
if (item->val_type == SYSINFO_VAL_VAL)
ret.val = item->val.val;
else
ret.val = ((sysinfo_val_fn_t) (item->val.fn)) (item);
}
return ret;
}
unative_t sys_sysinfo_valid(unative_t ptr, unative_t len)
{
char *str;
sysinfo_rettype_t ret = {0, 0};
str = malloc(len + 1, 0);
ASSERT(str);
if (!((copy_from_uspace(str, (void *) ptr, len + 1)) || (str[len])))
ret = sysinfo_get_val(str, NULL);
free(str);
return ret.valid;
}
unative_t sys_sysinfo_value(unative_t ptr, unative_t len)
{
char *str;
sysinfo_rettype_t ret = {0, 0};
str = malloc(len + 1, 0);
ASSERT(str);
if (!((copy_from_uspace(str, (void *) ptr, len + 1)) || (str[len])))
ret = sysinfo_get_val(str, NULL);
free(str);
return ret.val;
}
/** @}
*/