Safe error numbers for User-defined return values

Andy Jeffries (lkml@andyjeffries.co.uk)
Tue, 6 Nov 2001 11:22:16 +0000

Hi,

I want to define custom return values for my ioctl calls in my Kernel module. What is the recommended start value for user defined constants? I notice asm/errno.h only goes up to 124 (in 2.4.12), so should I start at 125 or should I start at 200 to be safe?

I probably only need 30 or so different codes.

Thanks,

-- 
Andy Jeffries                   | Scramdisk Linux Project
http://www.scramdisklinux.org   | Lead developer
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