HelenOS sources

F_OK              411 uspace/lib/posix/src/unistd.c 	if (amode == F_OK || (amode & (X_OK | W_OK | R_OK))) {
F_OK               53 uspace/lib/posix/test/unistd.c 	rc = access(name, F_OK);
F_OK               71 uspace/lib/posix/test/unistd.c 	rc = access(name, F_OK);