posix_lock_file9
Apply a posix-style lock to a file
Usage
int posix_lock_file(struct file * filp, struct file_lock * fl, struct file_lock * conflock);
Arguments
filp
The file to apply the lock to
fl
The lock to be applied
conflock
Place to return a copy of the conflicting lock, if found.
Overview
Add a POSIX style lock to a file. We merge adjacent & overlapping locks whenever possible. POSIX locks are sorted by owner task, then by starting address
Note that if called with an FL_EXISTS argument, the caller may determine whether or not a lock was successfully freed by testing the return value for -ENOENT.
Releases
6 releases since Debian 4.0 (Etch); the text changed 5 times.