int _rename_r( struct _reent *r, const char *oldname, const char *newname )
{
char *actname_old, *actname_new;
int devid_old, devid_new;
const DM_INSTANCE_DATA *pinst;
// Look for device, return error if not found or if function not implemented
if( ( devid_old = find_dm_entry( oldname, &actname_old ) ) == -1 )
{
r->_errno = ENODEV;
return -1;
}
if( ( devid_new = find_dm_entry( newname, &actname_new ) ) == -1 )
{
r->_errno = ENODEV;
return -1;
}
if( devid_old == devid_new )
{
pinst = dm_get_instance_at( devid_old );
if( pinst->pdev->p_rename_r == NULL )
{
r->_errno = EPERM;
return -1;
}
// Device found, call its function
return pinst->pdev->p_rename_r( r, actname_old, actname_new, pinst->pdata );
}
// Cannot rename between different devices (EXDEV)
r->_errno = EXDEV;
return -1;
}
int _unlink_r( struct _reent *r, const char *fname )
{
const DM_DEVICE* pdev;
char* actname;
int devid;
if( !fname || *fname == '\0' )
{
r->_errno = ENOENT;
return -1;
}
// Look for device, return error if not found or if function not implemented
if( ( devid = find_dm_entry( fname, &actname ) ) == -1 )
{
r->_errno = ENODEV;
return -1;
}
pdev = dm_get_device_at( devid );
if( pdev->p_unlink_r == NULL )
{
r->_errno = ENOSYS;
return -1;
}
// And call the unlink function
return pdev->p_unlink_r( r, actname );
}
// ****************************************************************************
// _mkdir_r
int _mkdir_r( struct _reent *r, const char *path, mkdir_mode_t mode )
{
char *actname;
int res, devid;
const DM_INSTANCE_DATA *pinst;
// Look for device, return error if not found or if function not implemented
if( ( devid = find_dm_entry( path, &actname ) ) == -1 ) {
r->_errno = ENODEV;
return -1;
}
pinst = dm_get_instance_at( devid );
if( pinst->pdev->p_mkdir_r == NULL ) {
r->_errno = EPERM;
return -1;
}
// Device found, call its function
return pinst->pdev->p_mkdir_r( r, actname - 1, mode, pinst->pdata );
}
int rmdir( const char *path )
{
char* actname;
int devid;
const DM_INSTANCE_DATA *pinst;
// Look for device, return error if not found or if function not implemented
if( ( devid = find_dm_entry( path, &actname ) ) == -1 )
{
_REENT->_errno = ENODEV;
return -1;
}
pinst = dm_get_instance_at( devid );
if( pinst->pdev->p_rmdir_r == NULL )
{
_REENT->_errno = ENOSYS;
return -1;
}
// Device found, call its function
return pinst->pdev->p_rmdir_r( _REENT, actname, pinst->pdata );
}
// ****************************************************************************
// _unlink_r
int _unlink_r( struct _reent *r, const char *fname )
{
char* actname;
int devid;
const DM_INSTANCE_DATA *pinst;
// Look for device, return error if not found or if function not implemented
if( ( devid = find_dm_entry( fname, &actname ) ) == -1 )
{
r->_errno = ENODEV;
return -1;
}
pinst = dm_get_instance_at( devid );
if( pinst->pdev->p_unlink_r == NULL )
{
r->_errno = ENOSYS;
return -1;
}
// Device found, call its function
return pinst->pdev->p_unlink_r( r, actname, pinst->pdata );
}
// *****************************************************************************
// _open_r
int _open_r( struct _reent *r, const char *name, int flags, int mode )
{
char *actname;
int res, devid;
const DM_INSTANCE_DATA *pinst;
// Look for device, return error if not found or if function not implemented
if( ( devid = find_dm_entry( name, &actname ) ) == -1 ) {
r->_errno = ENODEV;
return -1;
}
pinst = dm_get_instance_at( devid );
if( pinst->pdev->p_open_r == NULL ) {
r->_errno = ENOSYS;
return -1;
}
// Device found, call its function
if( ( res = pinst->pdev->p_open_r( r, actname, flags, mode, pinst->pdata ) ) < 0 )
return res;
return DM_MAKE_DESC( devid, res );
}
