SYS_FLOCK(9) The Linux VFS SYS_FLOCK(9)
NAME
sys_flock - flock system call.
SYNOPSIS
long sys_flock(unsigned int fd, unsigned int cmd);
ARGUMENTS
fd
the file descriptor to lock.
cmd
the type of lock to apply.
DESCRIPTION
Apply a FL_FLOCK style lock to an open file descriptor. The cmd can be one of
LOCK_SH -- a shared lock.
LOCK_EX -- an exclusive lock.
LOCK_UN -- remove an existing lock.
LOCK_MAND -- a `mandatory' flock. This exists to emulate Windows Share Modes.
LOCK_MAND can be combined with LOCK_READ or LOCK_WRITE to allow other processes read and write access respectively.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SYS_FLOCK(9)
