+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: General Coding Help (https://python-forum.io/forum-8.html)
+--- Thread: calling os functions not in module os (/thread-13988.html)
calling os functions not in module os - Skaperen - Nov-09-2018
i recall seeing a way to make calls to libc functions and/or kernel syscalls but now that i need it it can't find it. i did find module dl but it was depricated in version 2.6 so that is not what i would use, even if i could. i'd rather not name the calls i want to make so that any answers can stay focused on what is a general way to do Linux syscalls. at least one of the syscalls i want to do is not even in gnu libc. i also recall seeing a way to call a C library. but that might not help for the one syscall that is not in libc unless i can find a way to build my own C library to do it.
RE: calling os functions not in module os - Larz60+ - Nov-09-2018
see Calling functions here: https://docs.python.org/3/library/ctypes.html
simple example:
>>> print(libc.time(None)) 1150640792 >>> print(hex(windll.kernel32.GetModuleHandleA(None))) 0x1d000000 >>>
RE: calling os functions not in module os - Skaperen - Nov-10-2018
that was the thing i saw a while back. thanks!!
i think i might have overlooked it in my google searches because of the name.
now i can say what it is for. i will be calling some or all of these kernel syscalls: chroot(), clone(), kcmp(), pivot_root(), setns(), syscall(), and unshare(). the project is to use the Linux container facility to run 2 or more Linux distros is parallel without a parent (which means i have to do it directly, not with LXC). and i want Python to be the system programming language of choice. another project is to run a distro entirely in RAM, unmounting the system volumes (and detaching them where possible in container and cloud environments).