llvm-project

7e2d1797 - [libc] Implement lockf in unistd (#230856) (#231145)

[libc] Implement lockf in unistd (#230856) (#231145) Implement the POSIX function `lockf(int fd, int cmd, off_t len)` in `<unistd.h>`. Fixes #230856. Assisted by Antigravity and reviewed by Aman Maurya.