src/poolarch.c

   1 /*
   2  * Copyright (c) 2007, Novell Inc.
   3  *
   4  * This program is licensed under the BSD license, read LICENSE.BSD
   5  * for further information
   6  */
   7
   8 /*
   9  * poolarch.c
  10  *
  11  * create architecture policies
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17
  18 #include "pool.h"
  19 #include "poolid.h"
  20 #include "poolarch.h"
  21 #include "util.h"
  22
  23 static const char *archpolicies[] = {
  24   "x86_64",     "x86_64:i686:i586:i486:i386",
  25   "i686",       "i686:i586:i486:i386",
  26   "i586",       "i586:i486:i386",
  27   "i486",       "i486:i386",
  28   "i386",       "i386",
  29   "s390x",      "s390x:s390",
  30   "s390",       "s390",
  31   "ia64",       "ia64:i686:i586:i486:i386",
  32   "ppc64",      "ppc64:ppc",
  33   "ppc",        "ppc",
  34   "armv7tnhl",  "arvm7tnhl:armv7thl:armv7nhl:armv7hl",
  35   "armv7thl",   "armv7thl:armv7hl",
  36   "armv7nhl",   "armv7nhl:armv7hl",
  37   "armv7hl",    "armv7hl",
  38   "armv7l",     "armv7l:armv6l:armv5tejl:armv5tel:armv5l:armv4tl:armv4l:armv3l",
  39   "armv6l",     "armv6l:armv5tejl:armv5tel:armv5l:armv4tl:armv4l:armv3l",
  40   "armv5tejl",  "armv5tejl:armv5tel:armv5l:armv4tl:armv4l:armv3l",
  41   "armv5tel",   "armv5tel:armv5l:armv4tl:armv4l:armv3l",
  42   "armv5l",     "armv5l:armv4tl:armv4l:armv3l",
  43   "armv4tl",    "armv4tl:armv4l:armv3l",
  44   "armv4l",     "armv4l:armv3l",
  45   "armv3l",     "armv3l",
  46   "sh3",        "sh3",
  47   "sh4",        "sh4",
  48   "sh4a",       "sh4a:sh4",
  49   "sparc64v",   "sparc64v:sparc64:sparcv9v:sparcv9:sparcv8:sparc",
  50   "sparc64",    "sparc64:sparcv9:sparcv8:sparc",
  51   "sparcv9v",   "sparcv9v:sparcv9:sparcv8:sparc",
  52   "sparcv9",    "sparcv9:sparcv8:sparc",
  53   "sparcv8",    "sparcv8:sparc",
  54   "sparc",      "sparc",
  55   0
  56 };
  57
  58 void
  59 pool_setarch(Pool *pool, const char *arch)
  60 {
  61   if (arch)
  62     {
  63       int i;
  64
  65       /* convert arch to known policy */
  66       for (i = 0; archpolicies[i]; i += 2)
  67         if (!strcmp(archpolicies[i], arch))
  68           break;
  69       if (archpolicies[i])
  70         arch = archpolicies[i + 1];
  71       else
  72         arch = "";
  73     }
  74   pool_setarchpolicy(pool, arch);
  75 }
  76
  77 /*
  78  * we support three relations:
  79  *
  80  * a = b   both architectures a and b are treated as equivalent
  81  * a > b   a is considered a "better" architecture, the solver
  82  *         should change from a to b, but must not change from b to a
  83  * a : b   a is considered a "better" architecture, the solver
  84  *         must not change the architecture from a to b or b to a
  85  */
  86 void
  87 pool_setarchpolicy(Pool *pool, const char *arch)
  88 {
  89   unsigned int score = 0x10001;
  90   size_t l;
  91   char d;
  92   Id *id2arch;
  93   Id id, lastarch;
  94
  95   pool->id2arch = solv_free(pool->id2arch);
  96   pool->id2color = solv_free(pool->id2color);
  97   if (!arch)
  98     {
  99       pool->lastarch = 0;
 100       return;
 101     }
 102   id = pool->noarchid;
 103   lastarch = id + 255;
 104   id2arch = solv_calloc(lastarch + 1, sizeof(Id));
 105   id2arch[id] = 1;      /* the "noarch" class */
 106
 107   d = 0;
 108   while (*arch)
 109     {
 110       l = strcspn(arch, ":=>");
 111       if (l)
 112         {
 113           id = pool_strn2id(pool, arch, l, 1);
 114           if (id > lastarch)
 115             {
 116               id2arch = solv_realloc2(id2arch, (id + 255 + 1), sizeof(Id));
 117               memset(id2arch + lastarch + 1, 0, (id + 255 - lastarch) * sizeof(Id));
 118               lastarch = id + 255;
 119             }
 120           if (id2arch[id] == 0)
 121             {
 122               if (d == ':')
 123                 score += 0x10000;
 124               else if (d == '>')
 125                 score += 0x00001;
 126               id2arch[id] = score;
 127             }
 128         }
 129       arch += l;
 130       if ((d = *arch++) == 0)
 131         break;
 132     }
 133   pool->id2arch = id2arch;
 134   pool->lastarch = lastarch;
 135 }
 136
 137 unsigned char
 138 pool_arch2color_slow(Pool *pool, Id arch)
 139 {
 140   const char *s;
 141   unsigned char color;
 142
 143   if (arch > pool->lastarch)
 144     return ARCHCOLOR_ALL;
 145   if (!pool->id2color)
 146     pool->id2color = solv_calloc(pool->lastarch + 1, 1);
 147   s = pool_id2str(pool, arch);
 148   if (arch == ARCH_NOARCH || arch == ARCH_ALL || arch == ARCH_ANY)
 149     color = ARCHCOLOR_ALL;
 150   else if (!strcmp(s, "s390x") || strstr(s, "64"))
 151     color = ARCHCOLOR_64;
 152   else
 153     color = ARCHCOLOR_32;
 154   pool->id2color[arch] = color;
 155   return color;
 156 }
 157