int closeDir(int dirhandle){
// Find the corresponding open file object and remove it
int i;
struct InCoreINode icn;
struct DirEntry d;
struct INode in;
int inodeNo = isOpen(dirhandle, &icn);
if( inodeNo==-1 ){
printf("Directory not open!\n");
return -1;
}
if( icn.ic_inode.i_nlinks==0 ){
// readDirEntry(icn.ic_inode, )
printf("Not a directory!%d\n", icn.ic_ino);
return -1;
}
for(i=1; i<icn.ic_inode.i_nlinks; i++){
readDirEntry(icn.ic_dev, &icn.ic_inode, i, &d);
readINode(icn.ic_dev, d.d_entry.d_inode, &in);
if( in.i_nlinks==0 ) closeFile(d.d_entry.d_inode);
else closeDir(d.d_entry.d_inode);
}
removeOpenFile(dirhandle);
}
void CheckedFile::open( int access, int permission )
//--------------------------------------------------
{
CheckedFile * closeIt; // file to be closed when out of handles
if( !_isOpen ) {
_openAccess = access;
_openPermission = permission;
while( _openFiles->size() >= MaxOpenReadFiles ) {
closeIt = _openFiles->back();
closeIt->privClose();
removeOpenFile( closeIt );
}
_handle = ::open( _fileName, _openAccess, _openPermission );
while( _handle == -1 && errno == EMFILE ) {
if( _openFiles->size() == 0 ) {
FileExcept oops( FileExcept::Open, errno, _fileName );
throw( oops );
}
closeIt = _openFiles->back();
closeIt->privClose();
removeOpenFile( closeIt );
_handle = ::open( _fileName, _openAccess, _openPermission );
}
if( _handle == -1 ) { // error other than out of handles
FileExcept oops( FileExcept::Open, errno, _fileName );
throw( oops );
}
_isOpen = TRUE;
_logOpen = TRUE;
_currOffset = 0;
if( !( _openAccess & O_WRONLY ) ) {
addOpenFile( this );
}
}
}
//nparams: user_ip -> fd
return_type sClose(int nparams, arg_type* a) {
// if (nparams != 3) {
// r.return_val = NULL;
// r.return_size = 0;
// return r;
// }
char *user_ip = (char *)a->arg_val;
char *alias = (char *)a->next->arg_val;
int fd = *(int *)a->next->next->arg_val;
// Check if user is mounted
MountedUser *mounted = findMount(user_ip, alias);
if (mounted == NULL){
return createReturn(1, -1);
}
if (removeOpenFile(user_ip, alias, fd) != 0){
return createReturn(1, -1);
}
return createReturn(0, 0);
}
void CheckedFile::privClose()
//---------------------------
// close the physical file, logical file stays open
// since privClose is called from a destructor, avoid
// doing a throw in it.
{
#ifndef NDEBUG
int retVal;
#endif
if( _isOpen ) {
#ifndef NDEBUG
retVal = ::close( _handle );
assert( retVal == 0 );
#else
::close( _handle );
#endif
if( _openAccess & O_RDONLY ) {
removeOpenFile( this );
}
}
_isOpen = FALSE;
}
