usr/src/cmd/sgs/libconv/common/tokens.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 (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 2008 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 <sys/systeminfo.h>
  30 #include <sys/utsname.h>
  31 #include <limits.h>
  32 #include <strings.h>
  33 #include "_conv.h"
  34
  35 /*
  36  * Isalist(1) expansion.
  37  *
  38  * Obtain the native instruction sets executable on this platform and unpack
  39  * each element into the isalist descriptor.
  40  */
  41 Isa_desc *
  42 conv_isalist(void)
  43 {
  44         char            info[SYS_NMLN], * list, * ptr, * optr;
  45         Isa_desc *      desc;
  46         Isa_opt *       opt;
  47         long            size;
  48         int             no;
  49
  50         if ((desc = calloc(1, sizeof (Isa_desc))) == 0)
  51                 return (0);
  52
  53         /*
  54          * If we can't get the isalist() perhaps we've gone back to a release
  55          * too old to support it - silently ignore.
  56          */
  57         if ((size = sysinfo(SI_ISALIST, info, SYS_NMLN)) == -1)
  58                 return (desc);
  59         desc->isa_listsz = (size_t)size;
  60
  61         /*
  62          * Duplicate the isalist string in preparation for breaking it up.
  63          */
  64         if ((list = strdup(info)) == 0)
  65                 return (desc);
  66         desc->isa_list = list;
  67
  68         /*
  69          * Determine the number of instruction sets and use this to size the
  70          * isalist option table.
  71          */
  72         for (no = 1, ptr = list; *ptr; ptr++) {
  73                 if (*ptr == ' ')
  74                         no++;
  75         }
  76         if ((opt = malloc(no * sizeof (Isa_opt))) == 0)
  77                 return (desc);
  78         desc->isa_opt = opt;
  79         desc->isa_optno = no;
  80
  81         /*
  82          * Unpack the instruction set list.
  83          */
  84         for (optr = ptr = list; *ptr; ptr++) {
  85                 if (*ptr != ' ')
  86                         continue;
  87
  88                 opt->isa_name = optr;
  89                 opt->isa_namesz = ptr - optr;
  90                 opt++;
  91
  92                 *ptr = '\0';
  93                 optr = ptr + 1;
  94         }
  95         opt->isa_name = optr;
  96         opt->isa_namesz = ptr - optr;
  97
  98         return (desc);
  99 }
 100
 101 /*
 102  * uname(2) expansion.
 103  *
 104  * Obtain the information that identifies the current operating system and
 105  * unpack those elements we're interested in (presently name and release).
 106  */
 107 Uts_desc *
 108 conv_uts(void)
 109 {
 110         struct utsname  utsname;
 111         Uts_desc *      desc;
 112         size_t          size;
 113
 114         if ((desc = calloc(1, sizeof (Uts_desc))) == 0)
 115                 return (0);
 116
 117         /*
 118          * If we can't get the uname(2) silently ignore.
 119          */
 120         if (uname(&utsname) == -1)
 121                 return (desc);
 122
 123         /*
 124          * Duplicate the operating system name and release components.
 125          */
 126         size = strlen(utsname.sysname);
 127         if ((desc->uts_osname = malloc(size + 1)) == 0)
 128                 return (desc);
 129         desc->uts_osnamesz = size;
 130         (void) strncpy(desc->uts_osname, utsname.sysname, size);
 131
 132         size = strlen(utsname.release);
 133         if ((desc->uts_osrel = malloc(size + 1)) == 0)
 134                 return (0);
 135         desc->uts_osrelsz = size;
 136         (void) strncpy(desc->uts_osrel, utsname.release, size);
 137
 138         return (desc);
 139 }