follow_pfn(9) [suse man page]

FOLLOW_PFN(9)						    Memory Management in Linux						     FOLLOW_PFN(9)

NAME

       follow_pfn - look up PFN at a user virtual address

SYNOPSIS

       int follow_pfn(struct vm_area_struct * vma, unsigned long address, unsigned long * pfn);

ARGUMENTS

       vma
	   memory mapping

       address
	   user virtual address

       pfn
	   location to store found PFN

DESCRIPTION

       Only IO mappings and raw PFN mappings are allowed.

       Returns zero and the pfn at pfn on success, -ve otherwise.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							     FOLLOW_PFN(9)

Query Results(3)						 globus rls client						  Query Results(3)

NAME

       Query Results -

   Data Structures
       struct globus_rls_attribute_object_t
	   globus_rls_client_lrc_attr_search() returns a list of these structures which include the object name (LFN or PFN) and attribute value
	   found by the query.
       struct globus_rls_string2_t
	   String pair result.
       struct globus_rls_string2_bulk_t
	   String pair result with return code, returned by bulk query operations.

   Functions
       globus_result_t globus_rls_client_free_list (globus_list_t *list)

Detailed Description
       List results are returned as globus_list_t's, list datums depend on the type of query (eg globus_rls_string2_t, globus_rls_attribute_t,
       etc).

       A list result should be freed with globus_rls_client_free_list() when it's no longer needed. RLS supports limiting the number of results
       returned by a single query using an offset and reslimit. The offset specifies which result to begin with, reslimit specifies how many
       results to return. Offset should begin at 0 to retrieve all records. If reslimit is 0 then all results are returned at once, unless the
       server has a limit on results configured. If NULL is passed as the offset argument then the API will repeatedly call the query function
       until are results are retrieved. The following are equivalent examples of how to print the lfn,pfn pairs returned by
       globus_rls_client_lrc_get_lfn():

	  globus_list_t *str2_list;
	  globus_list_t *p;
	  globus_rls_string2_t *str2;

	  // Retrieve all results, API will handle looping through partial results
	  // if the server has a limit configured.  Error handling has been omitted.
	  globus_rls_client_lrc_get_lfn(h, "somepfn", NULL, 0, &str2_list);
	  for (p = str2_list; p; p = globus_list_rest(p)) {
	    str2 = (globus_rls_string2_t *) globus_list_first(p);
	    printf("lfn: %s pfn:%s0, str2->s1, str2->s2);
	  }
	  globus_rls_client_free_list(str2_list);

	  // This code fragment retrieves results 5 at a time.	Note offset is set
	  // to -1 when the server has no more results to return.
	  int offset = 0;

	  while (globus_rls_client_lrc_get_lfn(h, "somepfn", &offset, 5, &str2_list) == GLOBUS_SUCCESS) {
	    for (p = str2_list; p; p = globus_list_rest(p)) {
	      str2 = (globus_rls_string2_t *) globus_list_first(p);
	      printf("lfn: %s pfn:%s0, str2->s1, str2->s2);
	    }
	    globus_rls_client_free_list(str2_list);
	    if (offset == -1)
	      break;
	  }
	  .fi

Function Documentation
   globus_result_t globus_rls_client_free_list (globus_list_t *list)
       Free result list returned by one of the query functions. Parameters:
	   list List returned by one of the query functions.

       Return values:
	   GLOBUS_SUCCESS List and contents successfully freed.

Author
       Generated automatically by Doxygen for globus rls client from the source code.

Version 5.2							  Wed Jan 25 2012						  Query Results(3)