musl does this too. glibc may also, I haven't checked in a long time. I bet rust, etc., does too. You always need to check.
Glibc definitely does this transparent mapping as well. Calling int fd = open(<path>, O_RDONLY) yields openat(AT_FDCWD, <path>, O_RDONLY) when running through strace.
alt Hacker News
Glibc definitely does this transparent mapping as well. Calling int fd = open(<path>, O_RDONLY) yields openat(AT_FDCWD, <path>, O_RDONLY) when running through strace.