int VCSAgUnlockFile(const char *fname, VCSAgErrnoType *errp)
Release read or write (i.e shared or exclusive) lock on the given file. Returns 0, if the lock could be released, or else returns -1.
Warning: Do not do any operations on the file (ex, open, or close) within this process, except through the VCSAgReadLockFile(), VCSAgWriteLockFile(), and VCSAgUnlockFile() interfaces.
