https://www.evanjones.ca/setenv-is-not-thread-safe.html today I learned.

[xabean@infosec.exchange]

RE: https://infosec.exchange/@pancake/116572937101696701

https://www.evanjones.ca/setenv-is-not-thread-safe.html today I learned. Wow.

[pancake@infosec.exchange]

@xabean yeah i assume setenv is not thread safe, but i assume that if i fork a process i can setenv before calling execvp.. turns out it's not the case. POSIX is full of traps, in macos fork(2) manpage explains that in the last section. it's like a limbo for anything that's not listed in man 7 signal-safety.