O_RDONLY 456 daemons/pacemakerd/pcmkd_subdaemons.c pcmk__open_devnull(O_RDONLY); // stdin (fd 0) O_RDONLY 133 lib/common/pid.c fd = open(filename, O_RDONLY); O_RDONLY 63 lib/common/procfs.c fd = open(procpath, O_RDONLY); O_RDONLY 501 lib/common/utils.c pcmk__open_devnull(O_RDONLY); // stdin (fd 0)