Interfacing with System Calls

[icy cliff]

The error implies an argument was passed that is "too big"

[unkempt hamlet]

at some point I even tried calling syscall only with the Sysno syscalls::Sysno::rt_tgsigqueueinfo and nothing else (no extra arguments), expecting to get a different error (missing arguments) but I still got the same error.

it seems weird that rt_tgsigqueueinfo is too big considering that it is an enum type (with i32 reprs) specifically defined in the syscall crate and that the syscall macro expect.

I really don't know what's going on tbh 😕

[icy cliff]

With such little to go on and the crate being so small, I wouldn't be surprised if it's an issue you can open on their repo

[unkempt hamlet]

if I try to replace the syscall crate and use instead the libc::syscall I get, more specifically:

Error 7: Argument list too long

so it's still a problem about how I call the syscall or something os related I guess. Nothing wrong with the alternative syscall crate per se

ok, I resolved it by using libc::siginfo_t struct instead of my own siginfo_t

still unclear why I couldn't define my own given that the libc one misses a lot of other important fields

I meant to close the post but I've deleted my original message.

I'm going to re-port here down below before closing just in case it could help someone else in the future