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  1. /*
  2.  * Copyright (C) 2006 Jakub Vana
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <sysinfo/sysinfo.h>
  30. #include <mm/slab.h>
  31. #include <print.h>
  32. #include <syscall/copy.h>
  33.  
  34. sysinfo_item_t *_root=NULL;
  35.  
  36.  
  37. static sysinfo_item_t* sysinfo_find_item(const char *name,sysinfo_item_t *subtree)
  38. {
  39.     if(subtree==NULL) return NULL;
  40.     while(subtree!=NULL)
  41.     {
  42.         int i;
  43.         char *a,*b;
  44.         a=(char *)name;
  45.         b=subtree->name;
  46.         while((a[i]==b[i])&&(b[i])) i++;
  47.         if((!a[i]) && (!b[i])) return subtree; /*Last name in path matches*/
  48.         if((a[i]=='.') && (!b[i])) /*Middle name in path matches*/
  49.         {
  50.             if(subtree->subinfo_type==SYSINFO_SUBINFO_TABLE) return sysinfo_find_item(a+i+1,subtree->subinfo.table);
  51.             //if(subtree->subinfo_type==SYSINFO_SUBINFO_FUNCTION) return NULL; /* Subinfo managed by subsystem*/
  52.             return NULL; /*No subinfo*/
  53.         }
  54.         /* No matches try next*/
  55.         subtree=subtree->next;
  56.         i=0;
  57.     }
  58.     return NULL;
  59. }
  60.  
  61. static sysinfo_item_t* sysinfo_create_path(const char *name,sysinfo_item_t **psubtree)
  62. {
  63.     sysinfo_item_t *subtree;
  64.     subtree = *psubtree;
  65.    
  66.     if(subtree==NULL)
  67.     {
  68.             sysinfo_item_t *item;
  69.             int i=0,j;
  70.            
  71.             item = malloc(sizeof(sysinfo_item_t),0);
  72.             ASSERT(item);
  73.             *psubtree = item;
  74.             item -> next = NULL;
  75.             item -> val_type = SYSINFO_VAL_UNDEFINED;
  76.             item -> subinfo.table = NULL;
  77.  
  78.             while(name[i]&&(name[i]!='.')) i++;
  79.            
  80.             item -> name = malloc(i,0);
  81.             ASSERT(item -> name);
  82.  
  83.             for(j=0;j<i;j++) item->name[j]=name[j];
  84.             item->name[j]=0;
  85.            
  86.             if(name[i]/*=='.'*/)
  87.             {
  88.                 item -> subinfo_type = SYSINFO_SUBINFO_TABLE;
  89.                 return sysinfo_create_path(name+i+1,&(item->subinfo.table));
  90.             }
  91.             item -> subinfo_type = SYSINFO_SUBINFO_NONE;
  92.             return item;
  93.     }
  94.  
  95.     while(subtree!=NULL)
  96.     {
  97.         int i=0,j;
  98.         char *a,*b;
  99.         a=(char *)name;
  100.         b=subtree->name;
  101.         while((a[i]==b[i])&&(b[i])) i++;
  102.         if((!a[i]) && (!b[i])) return subtree; /*Last name in path matches*/
  103.         if((a[i]=='.') && (!b[i])) /*Middle name in path matches*/
  104.         {
  105.             if(subtree->subinfo_type==SYSINFO_SUBINFO_TABLE) return sysinfo_create_path(a+i+1,&(subtree->subinfo.table));
  106.             if(subtree->subinfo_type==SYSINFO_SUBINFO_NONE)
  107.             {
  108.                 subtree->subinfo_type=SYSINFO_SUBINFO_TABLE;
  109.                 return sysinfo_create_path(a+i+1,&(subtree->subinfo.table));
  110.             }  
  111.             //if(subtree->subinfo_type==SYSINFO_SUBINFO_FUNCTION) return NULL; /* Subinfo managed by subsystem*/
  112.             return NULL;
  113.         }
  114.         /* No matches try next or create new*/
  115.         if(subtree->next==NULL)
  116.         {
  117.             sysinfo_item_t *item;
  118.            
  119.             item = malloc(sizeof(sysinfo_item_t),0);
  120.             ASSERT(item);
  121.             subtree -> next = item;
  122.             item -> next = NULL;
  123.             item -> val_type = SYSINFO_VAL_UNDEFINED;
  124.             item -> subinfo.table = NULL;
  125.  
  126.             i=0;
  127.             while(name[i]&&(name[i]!='.')) i++;
  128.  
  129.             item -> name = malloc(i,0);
  130.             ASSERT(item -> name);
  131.             for(j=0;j<i;j++) item->name[j]=name[j];
  132.             item->name[j]=0;
  133.  
  134.             if(name[i]/*=='.'*/)
  135.             {
  136.                 item -> subinfo_type = SYSINFO_SUBINFO_TABLE;
  137.                 return sysinfo_create_path(name+i+1,&(item->subinfo.table));
  138.             }
  139.             item -> subinfo_type = SYSINFO_SUBINFO_NONE;
  140.             return item;
  141.  
  142.         }
  143.         else
  144.         {
  145.             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)
  154. {
  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
  158.                                             If ! , create it */
  159.     if(item!=NULL) /* If in subsystem, unable to create or return so unable to set */
  160.     {
  161.         item->val.val=val;                  
  162.         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)
  167. {
  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
  171.                                             If ! , create it */
  172.     if(item!=NULL)  /* If in subsystem, unable to create or return so  unable to set */
  173.     {
  174.         item->val.fn=fn;                  
  175.         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("  ");
  204.        
  205.         switch (root->val_type)
  206.         {
  207.             case (SYSINFO_VAL_UNDEFINED):
  208.                                          val=0;
  209.                                          vtype="UND";
  210.                                                                      break;
  211.             case (SYSINFO_VAL_VAL):
  212.                                          val=root->val.val;
  213.                                          vtype="VAL";
  214.                                                                      break;
  215.             case (SYSINFO_VAL_FUNCTION):
  216.                                          val=((sysinfo_val_fn_t)(root->val.fn))(root);
  217.                                          vtype="FUN";
  218.                                                                      break;
  219.         }                            
  220.         printf("%s    %s val:%d(%X) sub:%s\n",root->name,vtype,val,val,
  221.             (root->subinfo_type==SYSINFO_SUBINFO_NONE)?"NON":((root->subinfo_type==SYSINFO_SUBINFO_TABLE)?"TAB":"FUN"));
  222.        
  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. }
  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);
  259.     if(!((copy_from_uspace(str,(void *)ptr,len+1))||(str[len])))
  260.         ret=sysinfo_get_val(str,NULL);
  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);
  271.     if(!((copy_from_uspace(str,(void *)ptr,len+1))||(str[len])))
  272.         ret=sysinfo_get_val(str,NULL);
  273.     free(str);
  274.     return ret.val;
  275. }
  276.  
  277.  
  278.