Hi Martin,
> I'm using a fbt probe where I get a system call id as an argument, how do I
> look up the name of it? At the moment I'm post-processing the output using
> /etc/name/to_sysnum but that doesn't feel right :)
This may not be quite what you want for your particular issue but
a way to answer the initial question is to use the sysent[] array
to extract this information. An example using post_syscall():
fbt::post_syscall:entry
{
this->call = curthread->t_sysnum;
this->addr = (struct sysent *)((char *)&`sysent +
this->call * sizeof(struct sysent));
@calls[this->addr->sy_callc] = count();
}
END
{
printa("[EMAIL PROTECTED]", @calls);
}
# ./sysent.d
^C
genunix`lwp_cond_wait 1
genunix`sigsuspend 2
genunix`syslwp_park 3
genunix`read 4
genunix`getsetcontext 7
genunix`lwp_sigmask 19
genunix`pollsys 44
genunix`p_online 62
genunix`ioctl 125
Jon.
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