164   int iAmt,                       /* Size of data to write in bytes */  in demoDirectWrite()  argument
175   nWrite = write(p->fd, zBuf, iAmt);  in demoDirectWrite()
176   if( nWrite!=iAmt ){  in demoDirectWrite()
215   int iAmt,   in demoRead()  argument
238   nRead = read(p->fd, zBuf, iAmt);  in demoRead()
240   if( nRead==iAmt ){  in demoRead()
243     if( nRead<iAmt ){  in demoRead()
244       memset(&((char*)zBuf)[nRead], 0, iAmt-nRead);  in demoRead()
258   int iAmt,   in demoWrite()  argument
265     int n = iAmt;                 /* Number of bytes at z */  in demoWrite()
297     return demoDirectWrite(p, zBuf, iAmt, iOfst);  in demoWrite()