Shachar Shemesh <shac...@shemesh.biz> writes: > [...] The best way, as far as I can tell, to do that on Linux is to > use the PTRACE_GETSIGINFO command. [...] Unfortunately, utrace (at > least the version integrated into the Fedora Core 9 and Fedore 10 > kernels) totally eliminated this system call. When calling ptrace > with PTRACE_GETSIGINFO I get back "Invalid argument". [...] I just > don't think breaking user space compatibility over the old > interface, broken though you might think it is, is justified.
The version of utrace I see lying around does not flat out disable GETSIGINFO, but does return -EINVAL under some circumstances. I believe that any incompatibility with classical ptrace is unintended. Would you be willing to submit a bugzilla.redhat.com report, with a reproducing example, please? > This is directed not so much against the utrace project as it is > against RedHat including it in production kernels. The costs so far have been far outweighed by the benefits, FWIW. - FChE
