kernel/ctf/ctf_subr.c

   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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 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 #include <ctf_impl.h>
  30 #include <sys/kobj.h>
  31 #include <sys/kobj_impl.h>
  32
  33 /*
  34  * This module is used both during the normal operation of the kernel (i.e.
  35  * after kmem has been initialized) and during boot (before unix`_start has
  36  * been called).  kobj_alloc is able to tell the difference between the two
  37  * cases, and as such must be used instead of kmem_alloc.
  38  */
  39
  40 void *
  41 ctf_data_alloc(size_t size)
  42 {
  43         void *buf = kobj_alloc(size, KM_NOWAIT|KM_SCRATCH);
  44
  45         if (buf == NULL)
  46                 return (MAP_FAILED);
  47
  48         return (buf);
  49 }
  50
  51 void
  52 ctf_data_free(void *buf, size_t size)
  53 {
  54         kobj_free(buf, size);
  55 }
  56
  57 /*ARGSUSED*/
  58 void
  59 ctf_data_protect(void *buf, size_t size)
  60 {
  61         /* we don't support this operation in the kernel */
  62 }
  63
  64 void *
  65 ctf_alloc(size_t size)
  66 {
  67         return (kobj_alloc(size, KM_NOWAIT|KM_TMP));
  68 }
  69
  70 /*ARGSUSED*/
  71 void
  72 ctf_free(void *buf, size_t size)
  73 {
  74         kobj_free(buf, size);
  75 }
  76
  77 /*ARGSUSED*/
  78 const char *
  79 ctf_strerror(int err)
  80 {
  81         return (NULL); /* we don't support this operation in the kernel */
  82 }
  83
  84 /*PRINTFLIKE1*/
  85 void
  86 ctf_dprintf(const char *format, ...)
  87 {
  88         if (_libctf_debug) {
  89                 va_list alist;
  90
  91                 va_start(alist, format);
  92                 (void) printf("ctf DEBUG: ");
  93                 (void) vprintf(format, alist);
  94                 va_end(alist);
  95         }
  96 }