posix_lock_file9
Apply a posix-style lock to a file
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.
History
- Debian 9 (Stretch): the text shown here
- Debian 8 (Jessie)
- Debian 7 (Wheezy)
- Debian 6.0 (Squeeze)
- Debian 5.0 (Lenny)
- Debian 4.0 (Etch)