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| 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¶
unsigned int fd
the file descriptor to lock.
unsigned int 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¶
| July 2017 | Kernel Hackers Manual 4.12 |