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 #if defined(FEDORA) || defined(MAGEIA)
  25   "x86_64",     "x86_64:athlon:i686:i586:i486:i386",
  26 #else
  27   "x86_64",     "x86_64:i686:i586:i486:i386",
  28 #endif
  29   "i686",       "i686:i586:i486:i386",
  30   "i586",       "i586:i486:i386",
  31   "i486",       "i486:i386",
  32   "s390x",      "s390x:s390",
  33   "ppc64",      "ppc64:ppc",
  34   "ppc64p7",    "ppc64p7:ppc64:ppc",
  35   "ia64",       "ia64:i686:i586:i486:i386",
  36   "armv7hnl",   "armv7hnl:armv7hl:armv6hl",
  37   "armv7hl",    "armv7hl:armv6hl",
  38   "armv7l",     "armv7l:armv6l:armv5tejl:armv5tel:armv5tl:armv5l:armv4tl:armv4l:armv3l",
  39   "armv6l",     "armv6l:armv5tejl:armv5tel:armv5tl:armv5l:armv4tl:armv4l:armv3l",
  40   "armv5tejl",  "armv5tejl:armv5tel:armv5tl:armv5l:armv4tl:armv4l:armv3l",
  41   "armv5tel",   "armv5tel:armv5tl:armv5l:armv4tl:armv4l:armv3l",
  42   "armv5tl",    "armv5tl:armv5l:armv4tl:armv4l:armv3l",
  43   "armv5l",     "armv5l:armv4tl:armv4l:armv3l",
  44   "armv4tl",    "armv4tl:armv4l:armv3l",
  45   "armv4l",     "armv4l:armv3l",
  46   "sh4a",       "sh4a:sh4",
  47   "sparc64v",   "sparc64v:sparc64:sparcv9v:sparcv9:sparcv8:sparc",
  48   "sparc64",    "sparc64:sparcv9:sparcv8:sparc",
  49   "sparcv9v",   "sparcv9v:sparcv9:sparcv8:sparc",
  50   "sparcv9",    "sparcv9:sparcv8:sparc",
  51   "sparcv8",    "sparcv8:sparc",
  52 #if defined(FEDORA) || defined(MAGEIA)
  53   "ia32e",      "ia32e:x86_64:athlon:i686:i586:i486:i386",
  54   "athlon",     "athlon:i686:i586:i486:i386",
  55   "amd64",      "amd64:x86_64:athlon:i686:i586:i486:i386",
  56   "geode",      "geode:i586:i486:i386",
  57   "ppc64iseries", "ppc64iseries:ppc64:ppc",
  58   "ppc64pseries", "ppc64pseries:ppc64:ppc",
  59 #endif
  60   0
  61 };
  62
  63 void
  64 pool_setarch(Pool *pool, const char *arch)
  65 {
  66   if (arch)
  67     {
  68       int i;
  69       /* convert arch to known policy */
  70       for (i = 0; archpolicies[i]; i += 2)
  71         if (!strcmp(archpolicies[i], arch))
  72           {
  73             arch = archpolicies[i + 1];
  74             break;
  75           }
  76     }
  77   pool_setarchpolicy(pool, arch);
  78 }
  79
  80 /*
  81  * we support three relations:
  82  *
  83  * a = b   both architectures a and b are treated as equivalent
  84  * a > b   a is considered a "better" architecture, the solver
  85  *         should change from a to b, but must not change from b to a
  86  * a : b   a is considered a "better" architecture, the solver
  87  *         must not change the architecture from a to b or b to a
  88  */
  89 void
  90 pool_setarchpolicy(Pool *pool, const char *arch)
  91 {
  92   unsigned int score = 0x10001;
  93   size_t l;
  94   char d;
  95   Id *id2arch;
  96   Id id, lastarch;
  97
  98   pool->id2arch = solv_free(pool->id2arch);
  99   pool->id2color = solv_free(pool->id2color);
 100   if (!arch)
 101     {
 102       pool->lastarch = 0;
 103       return;
 104     }
 105   id = pool->noarchid;
 106   lastarch = id + 255;
 107   /* note that we overallocate one element to be compatible with
 108    * old versions that accessed id2arch[lastarch].
 109    * id2arch[lastarch] will always be zero */
 110   id2arch = solv_calloc(lastarch + 1, sizeof(Id));
 111   id2arch[id] = 1;      /* the "noarch" class */
 112
 113   d = 0;
 114   while (*arch)
 115     {
 116       l = strcspn(arch, ":=>");
 117       if (l)
 118         {
 119           id = pool_strn2id(pool, arch, l, 1);
 120           if (id >= lastarch)
 121             {
 122               id2arch = solv_realloc2(id2arch, (id + 255 + 1), sizeof(Id));
 123               memset(id2arch + lastarch + 1, 0, (id + 255 - lastarch) * sizeof(Id));
 124               lastarch = id + 255;
 125             }
 126           if (id2arch[id] == 0)
 127             {
 128               if (d == ':')
 129                 score += 0x10000;
 130               else if (d == '>')
 131                 score += 0x00001;
 132               id2arch[id] = score;
 133             }
 134         }
 135       arch += l;
 136       if ((d = *arch++) == 0)
 137         break;
 138     }
 139   pool->id2arch = id2arch;
 140   pool->lastarch = lastarch;
 141 }
 142
 143 unsigned char
 144 pool_arch2color_slow(Pool *pool, Id arch)
 145 {
 146   const char *s;
 147   unsigned char color;
 148
 149   if ((unsigned int)arch >= (unsigned int)pool->lastarch)
 150     return ARCHCOLOR_ALL;
 151   if (!pool->id2color)
 152     pool->id2color = solv_calloc(pool->lastarch + 1, 1);
 153   s = pool_id2str(pool, arch);
 154   if (arch == ARCH_NOARCH || arch == ARCH_ALL || arch == ARCH_ANY)
 155     color = ARCHCOLOR_ALL;
 156   else if (!strcmp(s, "s390x") || strstr(s, "64"))
 157     color = ARCHCOLOR_64;
 158   else
 159     color = ARCHCOLOR_32;
 160   pool->id2color[arch] = color;
 161   return color;
 162 }
 163