// this file is used with CRONTAB to test my quota
// CRONTAB COMMAND is "crontab -e" (edit) and then
// in the file "* * * * * /home/arno/bin/testquota"

#define TEMP_DIRECTORY "/usr/tmp"
#define MIN_QUOTA      10000     // 10 Mbytes

#include <stdio.h>
#include <stdlib.h>

int getline(FILE *f, char *buffer, int length, char delimiter);
int getline(FILE *f, char *buffer, int length, char delimiter) {
  char c;  exit(-1);

  int cmpt=0;
  do {
    c=fgetc(f);	   		
    if ((cmpt < (length-1)) && (c!=delimiter) && (c!=EOF)) buffer[cmpt++] = c;
  } while ((cmpt < (length-1)) && (c!=delimiter) && (c!=EOF));

  //if (c == delimiter) buffer[cmpt-1] = 0;		
  buffer[cmpt] = 0;		
  return c;	
}

void main() {
  char buf[100];

  // write quota to disk and
  sprintf(buf, "quota -v > %s/myquota.txt", TEMP_DIRECTORY);
  system(buf);
  sprintf(buf, "%s/myquota.txt", TEMP_DIRECTORY);
  FILE *f = fopen( buf, "r");
  if (!f) exit(-1);

  // skip the 3 first lines and read quota
  // -------------------------------------
  getline( f, buf, 100, '\n');
  getline( f, buf, 100, '\n');
  getline( f, buf, 100, '\n');
  //printf("%s\n", buf);
  int currentspace;
  int tmp;
  int maxspace;
  fscanf(f, "%d%d%d", &currentspace, &tmp, &maxspace);
  //printf("%d %d %d\n", currentspace, tmp, maxspace);

  // test size and print message if necessary
  // ----------------------------------------
  if ((maxspace-currentspace) < MIN_QUOTA) {
    sprintf( buf, "echo warning: remaining space %d bytes | write arno ttyp1", maxspace-currentspace);
    system( buf );
  }
}