Date: Thu, 30 Sep 1999 15:41:20 -0400 From: Simon Shapiro as Himself <shimon@simon-shapiro.org> To: hackers@freebsd.org Subject: Kernel cdevsw.size Message-ID: <37F3BCE0.A7D1E168@simon-shapiro.org>
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Hi Y'll
The function pointer (entry point, etc.) that indicates a device size is
defined in sys/conf.h as:
typedef int d_psize_t __P((dev_t dev));
The problem I have is that i2o devices express size as 64bit
unsigned value (this is in bytes).
This means that a device with more than 2billion sectors will
fail to work correctly.
While I realize this is not a very practical worry to most,
such devices are not purely imaginary, nor inconcievable.
Just casting the data will intruduce a latent and undocumented
bug, sort of y2k of device sizes.
Suggestions?
--
Sincerely Yours, Shimon@Simon-Shapiro.ORG
404.644.6401
Simon Shapiro
Unwritten code has no bugs and executes at twice the speed of mouth
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