home *** CD-ROM | disk | FTP | other *** search
- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: openlibrary.c,v 1.7 1997/01/01 03:46:13 ldp Exp $
- $Log: openlibrary.c,v $
- Revision 1.7 1997/01/01 03:46:13 ldp
- Committed Amiga native (support) code
-
- Changed clib to proto
-
- Revision 1.6 1996/12/10 13:51:49 aros
- Moved all #include's in the first column so makedepend can see it.
-
- Revision 1.5 1996/10/24 15:50:53 aros
- Use the official AROS macros over the __AROS versions.
-
- Revision 1.4 1996/08/13 13:56:05 digulla
- Replaced AROS_LA by AROS_LHA
- Replaced some AROS_LH*I by AROS_LH*
- Sorted and added includes
-
- Revision 1.3 1996/08/01 17:41:15 digulla
- Added standard header for all files
-
- Desc:
- Lang: english
- */
- #include <exec/execbase.h>
- #include <exec/lists.h>
- #include <exec/libraries.h>
- #include <aros/libcall.h>
- #include <proto/exec.h>
-
- /*****************************************************************************
-
- NAME */
-
- AROS_LH2(struct Library *, OpenLibrary,
-
- /* SYNOPSIS */
- AROS_LHA(UBYTE *, libName, A1),
- AROS_LHA(ULONG, version, D0),
-
- /* LOCATION */
- struct ExecBase *, SysBase, 92, Exec)
-
- /* FUNCTION
- Opens a library given by name and revision. If the library
- doesn't exist in memory it is tried to load it from disk.
- It this fails too, NULL is returned.
-
- INPUTS
- libName - Pointer to the library's name.
- version - the library's version number.
-
- RESULT
- Pointer to library structure or NULL.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
- CloseLibrary().
-
- INTERNALS
-
- HISTORY
- 21-10-95 digulla automatically created from
- include:clib/exec_protos.h
-
- *****************************************************************************/
- {
- AROS_LIBFUNC_INIT
-
- AROS_LIBBASE_EXT_DECL(struct ExecBase *,SysBase)
- struct Library * library;
-
- /* Arbitrate for the library list */
- Forbid();
-
- /* Look for the library in our list */
- library = (struct Library *) FindName (&SysBase->LibList, libName);
-
- /* Something found ? */
- if(library!=NULL)
- {
- /* Check version */
- if(library->lib_Version>=version)
- {
- /* Call Open vector */
- library=AROS_LVO_CALL1(struct Library *,
- AROS_LCA(ULONG,version,D0),
- struct Library *,library,1,lib
- );
- }else
- library=NULL;
- }
- /*
- else
- {
- Under normal circumstances you'd expect the library loading here -
- but this is only exec which doesn't know anything about the
- filesystem level. Therefore dos.library has to SetFunction() this vector
- for the additional functionality.
- }
- */
-
- /* All done. */
- Permit();
- return library;
- AROS_LIBFUNC_EXIT
- } /* OpenLibrary */
-