home *** CD-ROM | disk | FTP | other *** search
- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: assignlock.c,v 1.3 1996/08/13 13:52:44 digulla Exp $
- $Log: assignlock.c,v $
- Revision 1.3 1996/08/13 13:52:44 digulla
- Replaced <dos/dosextens.h> by "dos_intern.h" or added "dos_intern.h"
- Replaced __AROS_LA by __AROS_LHA
-
- Revision 1.2 1996/08/01 17:40:47 digulla
- Added standard header for all files
-
- Desc:
- Lang: english
- */
- #include <exec/memory.h>
- #include <clib/exec_protos.h>
- #include <dos/filesystem.h>
- #include "dos_intern.h"
-
- /*****************************************************************************
-
- NAME */
- #include <clib/dos_protos.h>
-
- __AROS_LH2(BOOL, AssignLock,
-
- /* SYNOPSIS */
- __AROS_LHA(STRPTR, name, D1),
- __AROS_LHA(BPTR, lock, D2),
-
- /* LOCATION */
- struct DosLibrary *, DOSBase, 102, Dos)
-
- /* FUNCTION
- Create an assign from a given name to a lock. Replaces any older
- assignments from that name, 0 cancels the assign completely. Do not
- use or free the lock after calling this function - it becomes
- the assign and will be freed by the system if the assign is removed.
-
- INPUTS
- name - NUL terminated name of the assign.
- lock - Lock to assigned directory.
-
- RESULT
- !=0 success, 0 on failure. IoErr() gives additional information
- in that case. The lock is freed on failure and must not be used
- in that case too.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
-
- INTERNALS
-
- HISTORY
- 29-10-95 digulla automatically created from
- dos_lib.fd and clib/dos_protos.h
-
- *****************************************************************************/
- {
- __AROS_FUNC_INIT
- __AROS_BASE_EXT_DECL(struct DosLibrary *,DOSBase)
-
- BOOL success=1;
- struct DosList *dl, *newdl=NULL;
- struct Process *me=(struct Process *)FindTask(NULL);
- struct IOFileSys io,*iofs=&io;
- struct FileHandle *fh=(struct FileHandle *)BADDR(lock);
-
- if(lock)
- {
- newdl=MakeDosEntry(name,DLT_DIRECTORY);
- if(newdl==NULL)
- {
- UnLock(lock);
- me->pr_Result2=ERROR_NO_FREE_STORE;
- return 0;
- }else
- {
- newdl->dol_Unit =fh->fh_Unit;
- newdl->dol_Device=fh->fh_Device;
- FreeDosObject(DOS_FILEHANDLE,fh);
- }
- }
-
- dl=LockDosList(LDF_DEVICES|LDF_ASSIGNS|LDF_WRITE);
-
- dl=FindDosEntry(dl,name,LDF_DEVICES|LDF_ASSIGNS);
- if(dl==NULL)
- {
- if(newdl!=NULL)
- AddDosEntry(newdl);
- }else if(dl->dol_Type==DLT_DEVICE)
- {
- dl=newdl;
- me->pr_Result2=ERROR_OBJECT_EXISTS;
- success=0;
- }else
- {
- RemDosEntry(dl);
- if(newdl!=NULL)
- AddDosEntry(newdl);
- }
-
- if(dl!=NULL)
- {
- /* Prepare I/O request. */
- iofs->IOFS.io_Message.mn_Node.ln_Type=NT_REPLYMSG;
- iofs->IOFS.io_Message.mn_ReplyPort =&me->pr_MsgPort;
- iofs->IOFS.io_Message.mn_Length =sizeof(struct IOFileSys);
- iofs->IOFS.io_Device =dl->dol_Device;
- iofs->IOFS.io_Unit =dl->dol_Unit;
- iofs->IOFS.io_Command=FSA_CLOSE;
- iofs->IOFS.io_Flags =0;
-
- /* Send the request. No errors possible. */
- (void)DoIO(&iofs->IOFS);
-
- FreeDosEntry(dl);
- }
-
- UnLockDosList(LDF_DEVICES|LDF_ASSIGNS|LDF_WRITE);
-
- return success;
- __AROS_FUNC_EXIT
- } /* AssignLock */
-