/**
* Release space to the free space for the filesystem.
*
* @param sess SrvSession
* @param tree TreeConnection
* @param fid int
* @param path String
* @param alloc long
* @exception IOException
*/
public void releaseSpace(SrvSession sess, TreeConnection tree, int fid, String path, long alloc)
throws IOException {
// Check if content usage is enabled
if (m_usageService.getEnabled() == false) return;
// Check if there is a live usage record for the user
UserQuotaDetails userQuota = getQuotaDetails(sess, true);
if (userQuota != null) {
synchronized (userQuota) {
// Release the space from the live usage value
userQuota.subtractFromCurrentUsage(alloc);
}
// DEBUG
if (logger.isDebugEnabled())
logger.debug("Released " + alloc + " bytes, userQuota=" + userQuota);
} else if (logger.isDebugEnabled())
logger.debug("Failed to release " + alloc + " bytes for sess " + sess.getUniqueId());
}
/**
* Allocate space on the filesystem.
*
* @param sess SrvSession
* @param tree TreeConnection
* @param file NetworkFile
* @param alloc long requested allocation size
* @return long granted allocation size
* @exception IOException
*/
public long allocateSpace(SrvSession sess, TreeConnection tree, NetworkFile file, long alloc)
throws IOException {
// Check if content usage is enabled
if (m_usageService.getEnabled() == false) return alloc;
// Check if there is a live usage record for the user
UserQuotaDetails userQuota = getQuotaDetails(sess, true);
long allowedAlloc = 0L;
if (userQuota != null) {
// Check if the user has a usage quota
synchronized (userQuota) {
if (userQuota.hasUserQuota()) {
// Check if the user has enough free space allocation
if (alloc > 0 && userQuota.getAvailableSpace() >= alloc) {
userQuota.addToCurrentUsage(alloc);
allowedAlloc = alloc;
}
} else {
// Update the live usage
userQuota.addToCurrentUsage(alloc);
allowedAlloc = alloc;
}
}
} else if (logger.isDebugEnabled())
logger.debug("Failed to allocate " + alloc + " bytes for sess " + sess.getUniqueId());
// Check if the allocation was allowed
if (allowedAlloc < alloc) {
// DEBUG
if (logger.isDebugEnabled()) logger.debug("Allocation failed userQuota=" + userQuota);
throw new DiskFullException();
} else if (logger.isDebugEnabled())
logger.debug("Allocated " + alloc + " bytes, userQuota=" + userQuota);
// Return the allocation size
return allowedAlloc;
}