[ltt-dev] can we get a analysis of error return about syscall

Mathieu Desnoyers compudj at krystal.dyndns.org
Mon Jan 31 11:04:18 EST 2011

* loody (miloody at gmail.com) wrote:
> hi all:
> if i have a user mode program which try to open a non-exist file, the
> return value as  ENOENT, can I see the same value in LTT?

Yes, but we get the value in decimal, not its mapping to the errno*.h
files (these are defines).

> Is any button or filter commands on lttv to help me to list all the
> return value of system call a user mode program called?

No. See /usr/include/asm-generic/errno.h and errno-base.h.


> -- 
> Regards,
> miloody
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Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.

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