is there such thing as a getcwd() syscall on macos

Question

I am wondering if there is a getcwd system call on macos. I can't seem to find any leads on the code for getcwd apart from https://www.informatik.htw-dresden.de/~beck/ASM/syscall_list.html . However, the code it gives does not function. I have tried using objdump -d on /usr/lib/system/libsystem_c.dylib, which according to nm, has a _getcwd function. However, objdump simply raised an error saying that it could not disassemble the file. Could anyone tell me the system call code, if it exists?

Answer 1

No, there's no getcwd syscall on macOS. The source for the getcwd() library function is here . Note, in particular, the comment for the __getcwd() internal function: "If __getcwd() ever becomes a syscall, we can remove this workaround."

The Unix syscall table is here . The Mach syscall table (using a separate domain/namespace) is here .