fsal_attrs.c

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/*
 * vim:expandtab:shiftwidth=8:tabstop=8:
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "fsal.h"
#include "fsal_internal.h"
#include "fsal_convert.h"

fsal_status_t FSAL_getattrs(fsal_handle_t * filehandle, /* IN */
                            fsal_op_context_t * p_context,      /* IN */
                            fsal_attrib_list_t * object_attributes      /* IN/OUT */
    )
{

  int rc;
  fsal_status_t status;

  /* sanity checks.
   * note : object_attributes is mandatory in FSAL_getattrs.
   */
  if(!filehandle || !p_context || !object_attributes)
    Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_getattrs);

  TakeTokenFSCall();

  /* >> get attributes from your filesystem << */

  ReleaseTokenFSCall();

  /* >> convert error code, and return on error << */

  /* >> convert your filesystem attributes to FSAL attributes << */

  Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);

}

fsal_status_t FSAL_setattrs(fsal_handle_t * filehandle, /* IN */
                            fsal_op_context_t * p_context,      /* IN */
                            fsal_attrib_list_t * attrib_set,    /* IN */
                            fsal_attrib_list_t * object_attributes      /* [ IN/OUT ] */
    )
{

  int rc;
  fsal_status_t status;
  fsal_attrib_list_t attrs;

  /* sanity checks.
   * note : object_attributes is optional.
   */
  if(!filehandle || !p_context || !attrib_set)
    Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_setattrs);

  /* local copy of attributes */
  attrs = *attrib_set;

  /* First, check that FSAL attributes changes are allowed. */

  /* Is it allowed to change times ? */

  if(!global_fs_info.cansettime)
    {

      if(attrs.asked_attributes
         & (FSAL_ATTR_ATIME | FSAL_ATTR_CREATION | FSAL_ATTR_CTIME | FSAL_ATTR_MTIME))
        {

          /* handled as an unsettable attribute. */
          Return(ERR_FSAL_INVAL, 0, INDEX_FSAL_setattrs);
        }

    }

  /* apply umask, if mode attribute is to be changed */

  if(FSAL_TEST_MASK(attrs.asked_attributes, FSAL_ATTR_MODE))
    {
      attrs.mode &= (~global_fs_info.umask);
    }

  /* >> Then, convert the attribute set to your FS format << */

  TakeTokenFSCall();

  /* >> Call your fs setattr function << */

  ReleaseTokenFSCall();

  /* >> convert error code, and return on error << */

  /* >> Optionaly fill output attributes.
   * If your filesystem setattr call doesn't
   * return object attributes, you may do something
   * like that : << */

  if(object_attributes)
    {

      status = FSAL_getattrs(filehandle, p_context, object_attributes);

      /* on error, we set a special bit in the mask. */
      if(FSAL_IS_ERROR(status))
        {
          FSAL_CLEAR_MASK(object_attributes->asked_attributes);
          FSAL_SET_MASK(object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
        }

    }

  Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_setattrs);

}

fsal_status_t FSAL_getextattrs(fsal_handle_t * p_filehandle, /* IN */
                               fsal_op_context_t * p_context,        /* IN */
                               fsal_extattrib_list_t * p_object_attributes /* OUT */
    )
{
  Return(ERR_FSAL_NOTSUPP, 0, INDEX_FSAL_getextattrs);
} /* FSAL_getextattrs */