On Sunday 14 October 2012 16:22:25 Sami Kerola wrote: > - - (!) rewrite ipcs to use /proc/sys/kernel rather than unreliable > syscalls > - (there are problems with 32bit userspace on 64bit kernel) this makes me a bit suspicious since the new code turns around and uses size_t to read values. that says to me that the same problems that [allegedly] plague the kernel syscall interface will bite your proc reading code. looking at the most common case (which will directly apply to all the others): - 32bit ia32 kernel: sizeof(size_t) == 4 - 64bit x86_64 kernel: sizeof(size_t) == 8 - 64bit x86_64 userland: sizeof(size_t) == 8 - 32bit ia32 userland: sizeof(size_t) == 4 - 32bit x86_x32 userland: sizeof(size_t) == 4 so running any of the last two setups could (in theory) be problematic because this new code still uses size_t. -mike
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