proc_locks(5) File Formats Manual proc_locks(5) /proc/locks - /proc/locks (flock(2) fcntl(2)) (fcntl(2)). : 1: POSIX ADVISORY READ 5433 08:01:7864448 128 128 2: FLOCK ADVISORY WRITE 2001 08:01:7864554 0 EOF 3: FLOCK ADVISORY WRITE 1568 00:2f:32388 0 EOF 4: POSIX ADVISORY WRITE 699 00:16:28457 0 EOF 5: POSIX ADVISORY WRITE 764 00:16:21448 0 0 6: POSIX ADVISORY READ 3548 08:01:7867240 1 1 7: POSIX ADVISORY READ 3548 08:01:7865567 1826 2335 8: OFDLCK ADVISORY WRITE -1 08:01:8713209 128 191 : [1] . [2] . : FLOCK BSD flock(2). OFDLCK (OFD) fcntl(2). POSIX POSIX fcntl(2). [3] : ADVISORY . MANDATORY . [4] . : POSIX OFD BSD. POSIX OFD BSD. [5] (PID) . OFD ( ) -1 OFD. ( Linux 4.14 -1.) [6] inode . [7] . BSD 0. [8] . EOF . BSD EOF. Linux 4.9 /proc/locks PID ( pid_namespaces(7)) /proc. ( PID .) lslocks(8) . proc(5) 3 . . : . 6.18 8 2026 proc_locks(5)