HelenOS sources

WALK_MAY_CREATE   169 uspace/lib/c/include/ipc/vfs.h 	WALK_MAY_CREATE = (1 << 0),
WALK_MAY_CREATE   169 uspace/lib/posix/include/libc/ipc/vfs.h 	WALK_MAY_CREATE = (1 << 0),
HelenOS homepage, sources at GitHub