// Pine 4.xx, ipop3d 4.xx and other /tmp-lock based mail stuff.

#include <sys/file.h>
#include <sys/stat.h>
#include <unistd.h>

main(int argc,char* argv[])
{
  int i,a=0;
  char s[100];
  struct stat x;
  if (!argv[1]) exit(printf("Usage: %s account_name\n",argv[0]));
  sprintf(s,"/var/spool/mail/%s",argv[1]);
  if (stat(s,&x)) exit(printf("Mailbox (%s) not found.\n",s));
  sprintf(s,"/tmp/.%x.%x",(int)x.st_dev,(int)x.st_ino);
  fchmod(i=open(s,O_RDWR|O_CREAT,0600),0666);
  while (1)
    {
      lseek(i,0,0);
      write(i,"-1",2);
      ftruncate(i,2);
      fsync(i);
      if (!a++) if (!flock(i,LOCK_EX)) printf("Got lock on %s.\n",s);
        else printf("File %s already locked, wait...\n",s);
      sleep(1);
    }
}
/*                    www.hack.co.za              [2000]*/