lockfile

A very polite lock file utility, which endeavors to not litter, and to wait patiently for others.
OpenBrowse Files
lockfilelockfilefsO_EXCL

@ronomon/direct-io

Direct IO helpers for block devices and regular files on FreeBSD, Linux, macOS and Windows.
OpenBrowse Files
_aligned_bufferaligned bufferalignmentblock sizeblock device pathdevice sizedirect memory accessdisk cachedisk sizedmaF_NOCACHEFSCTL_LOCK_VOLUMEFSCTL_UNLOCK_VOLUMElogical sector sizemechanical sympathyO_DIRECTO_DSYNCO_EXCLO_EXLOCKO_SYNCopening block devicephysical sector sizeposix_memalignraw diskthroughputvolumezero copy

@tidepool/direct-io

Direct IO helpers for block devices and regular files on FreeBSD, Linux, macOS and Windows.
OpenBrowse Files
_aligned_bufferaligned bufferalignmentblock sizeblock device pathdevice sizedirect memory accessdisk cachedisk sizedmaF_NOCACHEFSCTL_LOCK_VOLUMEFSCTL_UNLOCK_VOLUMElogical sector sizemechanical sympathyO_DIRECTO_DSYNCO_EXCLO_EXLOCKO_SYNCopening block devicephysical sector sizeposix_memalignraw diskthroughputvolumezero copy

@extra-fs/constants

Useful additions to inbuilt fs module {constants}.
OpenBrowse Files
extrafsconstantsF_OKR_OKW_OKX_OKCOPYFILE_EXCLCOPYFILE_FICLONECOPYFILE_FICLONE_FORCEO_RDONLYO_WRONLYO_RDWRO_CREATO_EXCLO_NOCTTYO_TRUNCO_APPENDO_DIRECTORYO_NOATIMEO_NOFOLLOWO_SYNCO_DSYNCO_SYMLINKO_DIRECTO_NONBLOCKS_IFMTS_IFREGS_IFDIRS_IFCHRS_IFBLKS_IFIFOS_IFLNKS_IFSOCKS_IRWXUS_IRUSRS_IWUSRS_IXUSRS_IRWXGS_IRGRPS_IWGRPS_IXGRPS_IRWXOS_IROTHS_IWOTHS_IXOTHUV_FS_O_FILEMAPMOVEFILE_EXCL

pidlock

Simple PID-based solution to ensure at most one instance of a node.js app is running.
OpenBrowse Files
locklockinglinuxfileprocpidpidlockguardsingleinstancelockfilefsO_EXCL