VFS_TEST_LOCK(9) The Linux VFS VFS_TEST_LOCK(9)NAME
vfs_test_lock - test file byte range lock
int vfs_test_lock(struct file * filp, struct file_lock * fl);
The file to test lock for
The lock to test; also used to hold result
Returns -ERRNO on failure. Indicates presence of conflicting lock by setting conf->fl_type to something other than F_UNLCK.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 VFS_TEST_LOCK(9)
Check Out this Related Man Page
VOP_ADVLOCK(9) BSD Kernel Developer's Manual VOP_ADVLOCK(9)NAME
VOP_ADVLOCK -- advisory record locking
VOP_ADVLOCK(struct vnode *vp, caddr_t id, int op, struct flock *fl, int flags);
The arguments are:
vp The vnode being manipulated.
id The id token which is changing the lock.
op The operation to perform (see fcntl(2)).
fl Description of the lock.
flags One of more of the following:
F_RDLCK Shared or read lock.
F_WRLCK Exclusive or write lock.
F_WAIT Wait until lock is granted.
F_FLOCK Use flock(2) semantics for lock.
F_POSIX Use POSIX semantics for lock.
This entry point manipulates advisory record locks on the file. Most file systems delegate the work for this call to lf_advlock().
Zero is returned on success, otherwise an error is returned.
SEE ALSO fcntl(2), flock(2), vnode(9)AUTHORS
This manual page was written by Doug Rabson.
BSD June 30, 1999 BSD
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