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  • Committer: Brian Aker
  • Date: 2008-07-01 20:14:24 UTC
  • Revision ID: brian@tangent.org-20080701201424-rsof5enxl7gkr50p
More cleanup on pread()

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Lines of Context:
mysys/my_write.c
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        /* Write a chunk of bytes to a file */
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size_t my_write(int Filedes, const unsigned char *Buffer, size_t Count, myf MyFlags)
 
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size_t my_write(int Filedes, const uchar *Buffer, size_t Count, myf MyFlags)
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{
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  size_t writenbytes, written;
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  uint32_t errors;
 
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  uint errors;
 
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  DBUG_ENTER("my_write");
 
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  DBUG_PRINT("my",("Fd: %d  Buffer: 0x%lx  Count: %lu  MyFlags: %d",
 
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                   Filedes, (long) Buffer, (ulong) Count, MyFlags));
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  errors=0; written=0;
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  /* The behavior of write(fd, buf, 0) is not portable */
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  if (unlikely(!Count))
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    return(0);
 
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    DBUG_RETURN(0);
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  for (;;)
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  {
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      Count-=writenbytes;
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    }
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    my_errno=errno;
 
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    DBUG_PRINT("error",("Write only %ld bytes, error: %d",
 
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                        (long) writenbytes, my_errno));
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#ifndef NO_BACKGROUND
 
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#ifdef THREAD
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    if (my_thread_var->abort)
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      MyFlags&= ~ MY_WAIT_IF_FULL;              /* End if aborted by user */
 
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#endif
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    if ((my_errno == ENOSPC || my_errno == EDQUOT) &&
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        (MyFlags & MY_WAIT_IF_FULL))
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    {
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      if (!(errors++ % MY_WAIT_GIVE_USER_A_MESSAGE))
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        my_error(EE_DISK_FULL,MYF(ME_BELL | ME_NOREFRESH),
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                 my_filename(Filedes),my_errno,MY_WAIT_FOR_USER_TO_FIX_PANIC);
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      sleep(MY_WAIT_FOR_USER_TO_FIX_PANIC);
 
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      VOID(sleep(MY_WAIT_FOR_USER_TO_FIX_PANIC));
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      continue;
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    }
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    {
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      if (my_errno == EINTR)
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      {
 
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        DBUG_PRINT("debug", ("my_write() was interrupted and returned %ld",
 
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                             (long) writenbytes));
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        continue;                               /* Interrupted */
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      }
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        my_error(EE_WRITE, MYF(ME_BELL+ME_WAITTANG),
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                 my_filename(Filedes),my_errno);
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      }
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      return(MY_FILE_ERROR);            /* Error on read */
 
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      DBUG_RETURN(MY_FILE_ERROR);               /* Error on read */
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    }
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    else
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      break;                                    /* Return bytes written */
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  }
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  if (MyFlags & (MY_NABP | MY_FNABP))
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    return(0);                  /* Want only errors */
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  return(writenbytes+written);
 
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    DBUG_RETURN(0);                     /* Want only errors */
 
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  DBUG_RETURN(writenbytes+written);
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} /* my_write */