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VFS_SETLEASE(9) | The Linux VFS | VFS_SETLEASE(9) |
NAME¶
vfs_setlease - sets a lease on an open fileSYNOPSIS¶
int vfs_setlease(struct file * filp, long arg, struct file_lock ** lease, void ** priv);
ARGUMENTS¶
struct file * filpfile pointer
long arg
type of lease to obtain
struct file_lock ** lease
file_lock to use when adding a lease
void ** priv
private info for lm_setup when adding a lease (may be
NULL if lm_setup doesn't require it)
DESCRIPTION¶
Call this to establish a lease on the file. The “lease” argument is not used for F_UNLCK requests and may be NULL. For commands that set or alter an existing lease, the (*lease)->fl_lmops->lm_break operation must be set; if not, this function will return -ENOLCK (and generate a scary-looking stack trace).The “priv” pointer is passed directly to the lm_setup function as-is. It may be NULL if the lm_setup operation doesn't require it.
COPYRIGHT¶
September 2017 | Kernel Hackers Manual 4.12 |