1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 
  22 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28 
  29 /*
  30  * We don't support Linux modules, but we have to emulate enough of the system
  31  * calls to show that we don't have any modules installed.
  32  */
  33 
  34 #include <errno.h>
  35 #include <sys/types.h>
  36 #include <sys/lx_misc.h>
  37 
  38 /*
  39  * For query_module(), we provide an empty list of modules, and return ENOENT
  40  * on any request for a specific module.
  41  */
  42 #define LX_QM_MODULES   1
  43 #define LX_QM_DEPS      2
  44 #define LX_QM_REFS      3
  45 #define LX_QM_SYMBOLS   4
  46 #define LX_QM_INFO      5
  47 
  48 /*ARGSUSED*/
  49 int
  50 lx_query_module(uintptr_t p1, uintptr_t p2, uintptr_t p3, uintptr_t p4,
  51     uintptr_t p5)
  52 {
  53         /*
  54          * parameter p1 is the 'name' argument.
  55          */
  56         int which = (int)p2;
  57         char *buf = (char *)p3;
  58         size_t bufsize = (size_t)p4;
  59         size_t *ret = (size_t *)p5;
  60 
  61         switch (which) {
  62         case 0:
  63                 /*
  64                  * Special case: always return 0
  65                  */
  66                 return (0);
  67 
  68         case LX_QM_MODULES:
  69                 /*
  70                  * Generate an empty list of modules.
  71                  */
  72                 if (bufsize && buf)
  73                         buf[0] = '\0';
  74                 if (ret)
  75                         *ret = 0;
  76                 return (0);
  77 
  78         case LX_QM_DEPS:
  79         case LX_QM_REFS:
  80         case LX_QM_SYMBOLS:
  81         case LX_QM_INFO:
  82                 /*
  83                  * Any requests for specific module information return ENOENT.
  84                  */
  85                 return (-ENOENT);
  86 
  87         default:
  88                 return (-EINVAL);
  89         }
  90 }