strace on irix 6.5

Rainer M. Canavan strace at
Mon Nov 10 20:10:15 UTC 2008

"Dmitry V. Levin" <ldv at> wrote:
> I'm not sure that such a place exists.
> The decode_open() function was made from sys_open() just to reuse the code
> common for sys_open and sys_openat.

I'm quite certain that fixing all the decode_... functions 
is not the right way to get strace to work properly again.
It's probably way too late in the process. I'd think that
either struct tcb, some of its members or the function
that fills it needs to be modified to shift all parameters
by one and get rid of the unneccesary 0 in the parameter
list. To illustrate the problem, here's a small sample
of strace output (with open fixed and read() partially

open("/usr/lib/locale/en_US/LC_NUMERIC", O_RDONLY) = 3
read(3, NULL, 2592)                     = 2
close(0)                                = 0
BSD_getime(0)                           = 0
ioctl(0, 0x1, 0)                        = 0
syssgi(SGI_SYSCONF, 0, 0x19, 0, 0x8)    = 0
ioctl(0, 0x1, 0)                        = 0
brk(0)                                  = 0
lxstat(0, 0x2, NULL)                    = 0



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