/g/ - syscall of the day: uselib - Technology

Anonymous

syscall of the day: uselib 04/05/26(Sun)09:36:15 No.108532493

File: 1769381036688605.png (5 KB, 300x300)

syscall of the day: uselib Anonymous 04/05/26(Sun)09:36:15 No.108532493 Archived

previous: >>108525108
#define __NR_uselib                134
https://man7.org/linux/man-pages/man2/uselib.2.html

tl;dr:
dlopen, but as a syscall

bit of a weird one today. this syscall is basically nonexistent on modern platforms, but if you really wanted to, you could enable its compilation flag. honestly quite strange that this ever existed. i wonder if any of those anons who know a lot about the history of *nix systems might have anything to say about this one?

relevant resources:
man man
man syscalls
https://man7.org/linux/man-pages/
https://linux.die.net/man/
https://elixir.bootlin.com/linux/
https://elixir.bootlin.com/musl/
https://elixir.bootlin.com/glibc/

Anonymous
04/05/26(Sun)10:28:22 No.108532853

Anonymous 04/05/26(Sun)10:28:22 No.108532853

>>108532493
Good Thread™ as usual, thank you anon. I'm honestly quite puzzled as well regarding the reasons for this syscall existing.

Anonymous
04/05/26(Sun)14:49:21 No.108534518

Anonymous 04/05/26(Sun)14:49:21 No.108534518

bampu

Anonymous
04/05/26(Sun)14:52:10 No.108534542

Anonymous 04/05/26(Sun)14:52:10 No.108534542

what if a static syscall to make a copy of the library so you can'td corrupt it, like it has it's own, CoW lib or something? like how you could do it if it made it's own and somehow a program calls it and overwrites the string functions, you'd still have yours