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1321 vana 1
/*
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 * Copyright (C) 2006 Jakub Vana
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1317 vana 29
#include <sysinfo/sysinfo.h>
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#include <mm/slab.h>
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#include <print.h>
1318 vana 32
#include <syscall/copy.h>
1317 vana 33
 
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sysinfo_item_t *_root=NULL;
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static sysinfo_item_t* sysinfo_find_item(const char *name,sysinfo_item_t *subtree)
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{
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    if(subtree==NULL) return NULL;
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    while(subtree!=NULL)
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    {
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        int i;
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        char *a,*b;
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        a=(char *)name;
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        b=subtree->name;
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        while((a[i]==b[i])&&(b[i])) i++;
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        if((!a[i]) && (!b[i])) return subtree; /*Last name in path matches*/
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        if((a[i]=='.') && (!b[i])) /*Middle name in path matches*/
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        {
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            if(subtree->subinfo_type==SYSINFO_SUBINFO_TABLE) return sysinfo_find_item(a+i+1,subtree->subinfo.table);
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            //if(subtree->subinfo_type==SYSINFO_SUBINFO_FUNCTION) return NULL; /* Subinfo managed by subsystem*/
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            return NULL; /*No subinfo*/
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        }
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        /* No matches try next*/
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        subtree=subtree->next;
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        i=0;
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    }
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    return NULL;
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}
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static sysinfo_item_t* sysinfo_create_path(const char *name,sysinfo_item_t **psubtree)
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{
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    sysinfo_item_t *subtree;
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    subtree = *psubtree;
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    if(subtree==NULL)
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    {
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            sysinfo_item_t *item;
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            int i=0,j;
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            item = malloc(sizeof(sysinfo_item_t),0);
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            ASSERT(item);
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            *psubtree = item;
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            item -> next = NULL;
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            item -> val_type = SYSINFO_VAL_UNDEFINED;
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            item -> subinfo.table = NULL;
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            while(name[i]&&(name[i]!='.')) i++;
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            item -> name = malloc(i,0);
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            ASSERT(item -> name);
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            for(j=0;j<i;j++) item->name[j]=name[j];
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            item->name[j]=0;
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            if(name[i]/*=='.'*/)
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            {
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                item -> subinfo_type = SYSINFO_SUBINFO_TABLE;
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                return sysinfo_create_path(name+i+1,&(item->subinfo.table));
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            }
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            item -> subinfo_type = SYSINFO_SUBINFO_NONE;
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            return item;
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    }
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    while(subtree!=NULL)
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    {
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        int i=0,j;
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        char *a,*b;
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        a=(char *)name;
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        b=subtree->name;
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        while((a[i]==b[i])&&(b[i])) i++;
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        if((!a[i]) && (!b[i])) return subtree; /*Last name in path matches*/
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        if((a[i]=='.') && (!b[i])) /*Middle name in path matches*/
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        {
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            if(subtree->subinfo_type==SYSINFO_SUBINFO_TABLE) return sysinfo_create_path(a+i+1,&(subtree->subinfo.table));
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            if(subtree->subinfo_type==SYSINFO_SUBINFO_NONE)
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            {
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                subtree->subinfo_type=SYSINFO_SUBINFO_TABLE;
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                return sysinfo_create_path(a+i+1,&(subtree->subinfo.table));
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            }  
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            //if(subtree->subinfo_type==SYSINFO_SUBINFO_FUNCTION) return NULL; /* Subinfo managed by subsystem*/
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            return NULL;
113
        }
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        /* No matches try next or create new*/
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        if(subtree->next==NULL)
116
        {
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            sysinfo_item_t *item;
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119
            item = malloc(sizeof(sysinfo_item_t),0);
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            ASSERT(item);
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            subtree -> next = item;
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            item -> next = NULL;
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            item -> val_type = SYSINFO_VAL_UNDEFINED;
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            item -> subinfo.table = NULL;
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            i=0;
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            while(name[i]&&(name[i]!='.')) i++;
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129
            item -> name = malloc(i,0);
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            ASSERT(item -> name);
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            for(j=0;j<i;j++) item->name[j]=name[j];
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            item->name[j]=0;
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            if(name[i]/*=='.'*/)
135
            {
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                item -> subinfo_type = SYSINFO_SUBINFO_TABLE;
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                return sysinfo_create_path(name+i+1,&(item->subinfo.table));
138
            }
139
            item -> subinfo_type = SYSINFO_SUBINFO_NONE;
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            return item;
141
 
142
        }
143
        else
144
        {
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            subtree=subtree->next;
146
            i=0;
147
        }  
148
    }
149
    panic("Not reached\n");
150
    return NULL;
151
}
152
 
153
void sysinfo_set_item_val(const char *name,sysinfo_item_t **root,__native val)
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{
155
    if(root==NULL) root=&_root;
156
    sysinfo_item_t *item;
157
    item = sysinfo_create_path(name,root); /* If already created create only returns pointer
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                                            If ! , create it */
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    if(item!=NULL) /* If in subsystem, unable to create or return so unable to set */
160
    {
161
        item->val.val=val;                  
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        item -> val_type = SYSINFO_VAL_VAL;
163
    }  
164
}
165
 
166
void sysinfo_set_item_function(const char *name,sysinfo_item_t **root,sysinfo_val_fn_t fn)
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{
168
    if(root==NULL) root=&_root;
169
    sysinfo_item_t *item;
170
    item = sysinfo_create_path(name,root); /* If already created create only returns pointer
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                                            If ! , create it */
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    if(item!=NULL)  /* If in subsystem, unable to create or return so  unable to set */
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    {
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        item->val.fn=fn;                  
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        item -> val_type = SYSINFO_VAL_FUNCTION;
176
    }  
177
}
178
 
179
 
180
void sysinfo_set_item_undefined(const char *name,sysinfo_item_t **root)
181
{
182
    if(root==NULL) root=&_root;
183
    sysinfo_item_t *item;
184
    item = sysinfo_find_item(name,*root);  
185
    if(item!=NULL)  item -> val_type = SYSINFO_VAL_UNDEFINED;
186
}
187
 
188
 
189
void sysinfo_dump(sysinfo_item_t **proot,int depth)
190
{
191
    sysinfo_item_t *root;
192
    if(proot==NULL) proot=&_root;
193
    root = *proot;
194
 
195
    while(root!=NULL)
196
    {
197
 
198
        int i;
199
        __native val=0;
200
        char *vtype=NULL;
201
 
202
 
203
        for(i=0;i<depth;i++) printf("  ");
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205
        switch (root->val_type)
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        {
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            case (SYSINFO_VAL_UNDEFINED):
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                                         val=0;
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                                         vtype="UND";
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                                                                     break;
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            case (SYSINFO_VAL_VAL):
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                                         val=root->val.val;
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                                         vtype="VAL";
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                                                                     break;
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            case (SYSINFO_VAL_FUNCTION):
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                                         val=((sysinfo_val_fn_t)(root->val.fn))(root);
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                                         vtype="FUN";
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                                                                     break;
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        }                            
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        printf("%s    %s val:%d(%X) sub:%s\n",root->name,vtype,val,val,
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            (root->subinfo_type==SYSINFO_SUBINFO_NONE)?"NON":((root->subinfo_type==SYSINFO_SUBINFO_TABLE)?"TAB":"FUN"));
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223
 
224
        if(root -> subinfo_type == SYSINFO_SUBINFO_TABLE)
225
            sysinfo_dump(&(root->subinfo.table),depth+1);
226
        root=root->next;
227
    }  
228
}
229
 
230
sysinfo_rettype_t sysinfo_get_val(const char *name,sysinfo_item_t **root)
231
{
232
    /*TODO:
233
        Implement Subsystem subinfo (by function implemented subinfo)
234
    */
235
 
236
    sysinfo_rettype_t ret={0,false};
237
 
238
    if(root==NULL) root=&_root;
239
    sysinfo_item_t *item;
240
    item = sysinfo_find_item(name,*root);  
241
    if(item!=NULL)  
242
    {
243
        if (item -> val_type == SYSINFO_VAL_UNDEFINED)
244
            return ret;
245
        else ret.valid=true;
246
        if (item -> val_type == SYSINFO_VAL_VAL)
247
            ret.val=item -> val.val;
248
        else ret.val=((sysinfo_val_fn_t)(item->val.fn))(item);
249
    }
250
    return ret;
251
}
1318 vana 252
 
253
__native sys_sysinfo_valid(__native ptr,__native len)
254
{
255
    char *str;
256
    sysinfo_rettype_t ret;
257
    str=malloc(len+1,0);
258
    ASSERT(str);
1322 vana 259
    if(!((copy_from_uspace(str,(void *)ptr,len+1))||(str[len])))
260
        ret=sysinfo_get_val(str,NULL);
1318 vana 261
    free(str);
262
    return ret.valid;
263
}
264
 
265
__native sys_sysinfo_value(__native ptr,__native len)
266
{
267
    char *str;
268
    sysinfo_rettype_t ret;
269
    str=malloc(len+1,0);
270
    ASSERT(str);
1322 vana 271
    if(!((copy_from_uspace(str,(void *)ptr,len+1))||(str[len])))
272
        ret=sysinfo_get_val(str,NULL);
1318 vana 273
    free(str);
274
    return ret.val;
275
}
276
 
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