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path: root/extras/chassis_id/table.c
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  /* -*-c-*-: 
   **
   ** (C) 2003 Intel Corporation
   **          Atul Sabharwal <atul.sabharwal@intel.com>
   **
   ** $Id: table.c,v 1.4 2004/03/18 21:56:24 atul Exp $
   **
   ** Distributed under the terms of the GNU Public License, v2.0 or
   ** later.
   **
   ** Many parts heavily based on test-skeleton.c, by Ulrich Drepper;
   ** with his permission, they have been re-licensed GPL, and his
   ** copyright still applies on them. 
   **
   */

#include <stdio.h>
#define TABLE_SIZE 100
#define PROVISION_DB  "/usr/local/bin/provision.tbl"

struct provision_record
{
    int  id;
    int  host_num;          //port # or adaptor number
    int  num_disks;
    int  chassis_num;
    int  slot_num;
    char serial_num[32];
    char name[32];

} ptable[TABLE_SIZE];

int ptable_size;

/* Initialize the provisioning table by reading the data from special file provision.tbl *
   Return error if something does not work appropriately.                                */
int table_init()
{
   FILE *fp;
   char ptr[255];
   int i;
   
   fp=fopen( PROVISION_DB, "r");

   if ((fp== NULL) || feof(fp))
        return -1;

   //skip the first line of text which contains descriptive details.
   fgets(ptr, 80, fp);	
   i = 0;
   while (!feof(fp))
   {
       fgets(ptr, 80, fp);	
       sscanf( ptr, "%d %d %d %d %d %s %s", &ptable[i].id, &ptable[i].host_num, 
            &ptable[i].num_disks, &ptable[i].chassis_num, &ptable[i].slot_num, 
              ptable[i].serial_num, ptable[i].name );
       i++;       
   }  

   ptable_size = i;
   fclose(fp);
   return 0;
}


/*  return -1 when no disk found. Otherwise return index of disk */
int table_find_disk( char * serialnumber , int * host_num, int * chassis_num, int *slot_num)
{
    
   int i;
 
   for(i = 0; i < ptable_size; i++)
   {

      if(strcmp(ptable[i].serial_num, serialnumber) == 0)
      {

            *host_num =  ptable[i].host_num;
            *chassis_num =  ptable[i].chassis_num;
            *slot_num = ptable[i].slot_num;
            break;
      }
   }

   if(i == ptable_size)
       return -1;
   else
       return i;
}

/* This function is primarily there for passing the selected disk entry to udev so that *
 * it can create descriptive GDN for it. So, for that we need to output this data to    *
 * stdout.                                                                              */
int table_select_disk( int diskindex )
{
   printf("%d ", ptable[diskindex].chassis_num);
   printf("%d ", ptable[diskindex].slot_num);
   printf("%d ", ptable[diskindex].host_num);
   printf("%s ", ptable[diskindex].name);

}