code.ossystems Code Review - openembedded-core.git/blob

   1 From 8a6e43726ad0ae41bd1cc2c248d91deb31459357 Mon Sep 17 00:00:00 2001
   2 From: Lei Maohui <leimaohui@cn.fujitsu.com>
   3 Date: Tue, 9 Jun 2015 11:11:48 +0900
   4 Subject: [PATCH] packlib.c: support dictionary byte order dependent
   5
   6 The previous dict files are NOT byte-order independent, in fact they are
   7 probably ARCHITECTURE SPECIFIC.
   8 Create the dict files in big endian, and convert to host endian while
   9 load them. This could fix the endian issue on multiple platform.
  10
  11 Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
  12 Upstream-Status: Pending
  13
  14 We can't use the endian.h, htobe* and be*toh functions because they are
  15 not available on older versions of glibc, such as that found in RHEL
  16 5.9.
  17
  18 Change to checking endian and directly calling bswap_* as defined in
  19 byteswap.h.
  20
  21 Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
  22
  23 Signed-off-by: Lei Maohui <leimaohui@cn.fujitsu.com>
  24 ---
  25  lib/packlib.c | 214 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
  26  1 file changed, 210 insertions(+), 4 deletions(-)
  27
  28 diff --git a/lib/packlib.c b/lib/packlib.c
  29 index f851424..3aac805 100644
  30 --- a/lib/packlib.c
  31 +++ b/lib/packlib.c
  32 @@ -16,6 +16,12 @@
  33  #ifdef HAVE_STDINT_H
  34  #include <stdint.h>
  35  #endif
  36 +
  37 +#ifndef _BSD_SOURCE
  38 +#define _BSD_SOURCE             /* See feature_test_macros(7) */
  39 +#endif
  40 +#include <endian.h>
  41 +#include <byteswap.h>
  42  #include "packer.h"
  43
  44  static const char vers_id[] = "packlib.c : v2.3p2 Alec Muffett 18 May 1993";
  45 @@ -45,6 +51,185 @@ typedef struct
  46      char data_get[NUMWORDS][MAXWORDLEN];
  47  } PWDICT64;
  48
  49 +enum{
  50 +    en_is32,
  51 +    en_is64
  52 +};
  53 +
  54 +static int
  55 +IheaderHostToBigEndian(char *pHeader, int nBitType)
  56 +{
  57 +    if (nBitType == en_is64 && __BYTE_ORDER == __LITTLE_ENDIAN)
  58 +    {
  59 +        struct pi_header64 *pHeader64 = (struct pi_header64*)pHeader;
  60 +
  61 +        pHeader64->pih_magic = bswap_64(pHeader64->pih_magic);
  62 +        pHeader64->pih_numwords = bswap_64(pHeader64->pih_numwords);
  63 +        pHeader64->pih_blocklen = bswap_16(pHeader64->pih_blocklen);
  64 +        pHeader64->pih_pad = bswap_16(pHeader64->pih_pad);
  65 +
  66 +#if DEBUG
  67 +        printf("Header64: magic %x, numwords %x, blocklen %x, pad %x\n",
  68 +          pHeader64->pih_magic, pHeader64->pih_numwords,
  69 +          pHeader64->pih_blocklen, pHeader64->pih_pad);
  70 +#endif
  71 +    }
  72 +    else if (nBitType == en_is32 && __BYTE_ORDER == __LITTLE_ENDIAN)
  73 +    {
  74 +        struct pi_header *pHeader32 = (struct pi_header*)pHeader;
  75 +
  76 +        pHeader32->pih_magic = bswap_32(pHeader32->pih_magic);
  77 +        pHeader32->pih_numwords = bswap_32(pHeader32->pih_numwords);
  78 +        pHeader32->pih_blocklen = bswap_16(pHeader32->pih_blocklen);
  79 +        pHeader32->pih_pad = bswap_16(pHeader32->pih_pad);
  80 +
  81 +#if DEBUG
  82 +        printf("Header32: magic %x, numwords %x, blocklen %x, pad %x\n",
  83 +          pHeader32->pih_magic, pHeader32->pih_numwords,
  84 +          pHeader32->pih_blocklen, pHeader32->pih_pad);
  85 +#endif
  86 +    }
  87 +    else if (__BYTE_ORDER == __LITTLE_ENDIAN)
  88 +    {
  89 +        fprintf(stderr, "Neither 32 or 64: %d\n", nBitType);
  90 +        return (-1);
  91 +    }
  92 +
  93 +    return 0;
  94 +}
  95 +
  96 +static int
  97 +IheaderBigEndianToHost(char *pHeader, int nBitType)
  98 +{
  99 +    if (nBitType == en_is64 && __BYTE_ORDER == __LITTLE_ENDIAN)
 100 +    {
 101 +        struct pi_header64 *pHeader64 = (struct pi_header64*)pHeader;
 102 +
 103 +        pHeader64->pih_magic = bswap_64(pHeader64->pih_magic);
 104 +        pHeader64->pih_numwords = bswap_64(pHeader64->pih_numwords);
 105 +        pHeader64->pih_blocklen = bswap_16(pHeader64->pih_blocklen);
 106 +        pHeader64->pih_pad = bswap_16(pHeader64->pih_pad);
 107 +
 108 +#if DEBUG
 109 +        printf("Header64: magic %x, numwords %x, blocklen %x, pad %x\n",
 110 +          pHeader64->pih_magic, pHeader64->pih_numwords,
 111 +          pHeader64->pih_blocklen, pHeader64->pih_pad);
 112 +#endif
 113 +    }
 114 +    else if (nBitType == en_is32 && __BYTE_ORDER == __LITTLE_ENDIAN)
 115 +    {
 116 +        struct pi_header *pHeader32 = (struct pi_header*)pHeader;
 117 +
 118 +        pHeader32->pih_magic = bswap_32(pHeader32->pih_magic);
 119 +        pHeader32->pih_numwords = bswap_32(pHeader32->pih_numwords);
 120 +        pHeader32->pih_blocklen = bswap_16(pHeader32->pih_blocklen);
 121 +        pHeader32->pih_pad = bswap_16(pHeader32->pih_pad);
 122 +
 123 +#if DEBUG
 124 +        printf("Header32: magic %x, numwords %x, blocklen %x, pad %x\n",
 125 +            pHeader32->pih_magic, pHeader32->pih_numwords,
 126 +            pHeader32->pih_blocklen, pHeader32->pih_pad);
 127 +#endif
 128 +    }
 129 +    else if (__BYTE_ORDER == __LITTLE_ENDIAN)
 130 +    {
 131 +        fprintf(stderr, "Neither 32 or 64: %d\n", nBitType);
 132 +        return (-1);
 133 +    }
 134 +
 135 +    return 0;
 136 +}
 137 +
 138 +static int
 139 +HwmsHostToBigEndian(char *pHwms, int nLen,int nBitType)
 140 +{
 141 +    int i = 0;
 142 +
 143 +    if (nBitType == en_is64 && __BYTE_ORDER == __LITTLE_ENDIAN)
 144 +    {
 145 +        uint64_t *pHwms64 = (uint64_t*)pHwms;
 146 +
 147 +        for (i = 0; i < nLen / sizeof(uint64_t); i++)
 148 +        {
 149 +            *pHwms64 = bswap_64(*pHwms64);
 150 +            *pHwms64++;
 151 +        }
 152 +
 153 +    }
 154 +    else if (nBitType == en_is32 && __BYTE_ORDER == __LITTLE_ENDIAN)
 155 +    {
 156 +        uint32_t *pHwms32 = (uint32_t*)pHwms;
 157 +
 158 +        for (i = 0; i < nLen / sizeof(uint32_t); i++)
 159 +        {
 160 +            *pHwms32 = bswap_32(*pHwms32);
 161 +            *pHwms32++;
 162 +        }
 163 +
 164 +    }
 165 +    else if (__BYTE_ORDER == __LITTLE_ENDIAN)
 166 +    {
 167 +        fprintf(stderr, "Neither 32 or 64: %d\n", nBitType);
 168 +        return (-1);
 169 +    }
 170 +
 171 +#if DEBUG
 172 +    for (i = 0; i < nLen; i+=8)
 173 +    {
 174 +        printf("hwms%s: %02X %02X %02X %02X %02X %02X %02X %02X\n",
 175 +            nBitType==en_is64?"64":"32", pHwms[i+0]&0xFF, pHwms[i+1]&0xFF,
 176 +            pHwms[i+2]&0xFF, pHwms[i+3]&0xFF, pHwms[i+4]&0xFF,
 177 +            pHwms[i+5]&0xFF, pHwms[i+6]&0xFF, pHwms[i+7]&0xFF);
 178 +    }
 179 +#endif
 180 +
 181 +    return 0;
 182 +}
 183 +
 184 +static int
 185 +HwmsBigEndianToHost(char *pHwms, int nLen, int nBitType)
 186 +{
 187 +    int i = 0;
 188 +
 189 +    if (nBitType == en_is64 && __BYTE_ORDER == __LITTLE_ENDIAN)
 190 +    {
 191 +        uint64_t *pHwms64 = (uint64_t*)pHwms;
 192 +
 193 +        for (i = 0; i < nLen / sizeof(uint64_t); i++)
 194 +        {
 195 +            *pHwms64++ = bswap_64(*pHwms64);
 196 +        }
 197 +
 198 +    }
 199 +    else if (nBitType == en_is32 && __BYTE_ORDER == __LITTLE_ENDIAN)
 200 +    {
 201 +        uint32_t *pHwms32 = (uint32_t*)pHwms;
 202 +
 203 +        for (i = 0; i < nLen / sizeof(uint32_t); i++)
 204 +        {
 205 +            *pHwms32 = bswap_32(*pHwms32);
 206 +            *pHwms32++;
 207 +        }
 208 +
 209 +    }
 210 +    else if (__BYTE_ORDER == __LITTLE_ENDIAN)
 211 +    {
 212 +        fprintf(stderr, "Neither 32 or 64: %d\n", nBitType);
 213 +        return (-1);
 214 +    }
 215 +
 216 +#if DEBUG
 217 +    for (i = 0; i < nLen; i+=8)
 218 +    {
 219 +        printf("hwms%s: %02X %02X %02X %02X %02X %02X %02X %02X\n",
 220 +            nBitType==en_is64?"64":"32", pHwms[i+0]&0xFF, pHwms[i+1]&0xFF,
 221 +            pHwms[i+2]&0xFF, pHwms[i+3]&0xFF, pHwms[i+4]&0xFF,
 222 +            pHwms[i+5]&0xFF, pHwms[i+6]&0xFF, pHwms[i+7]&0xFF);
 223 +    }
 224 +#endif
 225 +
 226 +    return 0;
 227 +}
 228
 229  static int
 230  _PWIsBroken64(FILE *ifp)
 231 @@ -57,6 +242,7 @@ _PWIsBroken64(FILE *ifp)
 232         return 0;
 233      }
 234
 235 +    IheaderBigEndianToHost((char *) &pdesc64.header, en_is64);
 236      return (pdesc64.header.pih_magic == PIH_MAGIC);
 237  }
 238
 239 @@ -149,7 +335,11 @@ PWOpen(prefix, mode)
 240         pdesc.header.pih_blocklen = NUMWORDS;
 241         pdesc.header.pih_numwords = 0;
 242
 243 -       fwrite((char *) &pdesc.header, sizeof(pdesc.header), 1, ifp);
 244 +       struct pi_header tmpheader32;
 245 +
 246 +       memcpy(&tmpheader32,  &pdesc.header, sizeof(pdesc.header));
 247 +       IheaderHostToBigEndian((char *) &tmpheader32, en_is32);
 248 +       fwrite((char *) &tmpheader32, sizeof(tmpheader32), 1, ifp);
 249      } else
 250      {
 251         pdesc.flags &= ~PFOR_WRITE;
 252 @@ -173,6 +363,7 @@ PWOpen(prefix, mode)
 253             return NULL;
 254         }
 255
 256 +        IheaderBigEndianToHost((char *) &pdesc.header, en_is32);
 257          if ((pdesc.header.pih_magic == 0) || (pdesc.header.pih_numwords == 0))
 258          {
 259              /* uh-oh. either a broken "64-bit" file or a garbage file. */
 260 @@ -195,6 +386,7 @@ PWOpen(prefix, mode)
 261                 }
 262                  return NULL;
 263              }
 264 +            IheaderBigEndianToHost((char *) &pdesc64.header, en_is64);
 265              if (pdesc64.header.pih_magic != PIH_MAGIC)
 266              {
 267                  /* nope, not "64-bit" after all */
 268 @@ -290,6 +482,7 @@ PWOpen(prefix, mode)
 269                  {
 270                      pdesc.flags &= ~PFOR_USEHWMS;
 271                  }
 272 +                HwmsBigEndianToHost((char*)pdesc64.hwms, sizeof(pdesc64.hwms), en_is64);
 273                  for (i = 0; i < sizeof(pdesc.hwms) / sizeof(pdesc.hwms[0]); i++)
 274                  {
 275                      pdesc.hwms[i] = pdesc64.hwms[i];
 276 @@ -299,6 +492,7 @@ PWOpen(prefix, mode)
 277             {
 278                 pdesc.flags &= ~PFOR_USEHWMS;
 279             }
 280 +           HwmsBigEndianToHost((char*)pdesc.hwms, sizeof(pdesc.hwms), en_is32);
 281  #if DEBUG
 282              for (i=1; i<=0xff; i++)
 283              {
 284 @@ -332,7 +526,11 @@ PWClose(pwp)
 285             return (-1);
 286         }
 287
 288 -       if (!fwrite((char *) &pwp->header, sizeof(pwp->header), 1, pwp->ifp))
 289 +       struct pi_header tmpheader32;
 290 +
 291 +       memcpy(&tmpheader32,  &pwp->header, sizeof(pwp->header));
 292 +       IheaderHostToBigEndian((char *) &tmpheader32, en_is32);
 293 +       if (!fwrite((char *) &tmpheader32, sizeof(tmpheader32), 1, pwp->ifp))
 294         {
 295             fprintf(stderr, "index magic fwrite failed\n");
 296             return (-1);
 297 @@ -351,7 +549,12 @@ PWClose(pwp)
 298                 printf("hwm[%02x] = %d\n", i, pwp->hwms[i]);
 299  #endif
 300             }
 301 -           fwrite(pwp->hwms, 1, sizeof(pwp->hwms), pwp->wfp);
 302 +
 303 +           PWDICT tmp_pwp;
 304 +
 305 +           memcpy(&tmp_pwp, pwp, sizeof(PWDICT));
 306 +           HwmsHostToBigEndian(tmp_pwp.hwms, sizeof(tmp_pwp.hwms), en_is32);
 307 +           fwrite(tmp_pwp.hwms, 1, sizeof(tmp_pwp.hwms), pwp->wfp);
 308         }
 309      }
 310
 311 @@ -405,7 +608,8 @@ PutPW(pwp, string)
 312
 313         datum = (uint32_t) ftell(pwp->dfp);
 314
 315 -       fwrite((char *) &datum, sizeof(datum), 1, pwp->ifp);
 316 +       uint32_t tmpdatum = (__BYTE_ORDER == __LITTLE_ENDIAN) ? bswap_32(datum) : datum;
 317 +       fwrite((char *) &tmpdatum, sizeof(tmpdatum), 1, pwp->ifp);
 318
 319         fputs(pwp->data_put[0], pwp->dfp);
 320         putc(0, pwp->dfp);
 321 @@ -464,6 +668,7 @@ GetPW(pwp, number)
 322             perror("(index fread failed)");
 323             return NULL;
 324         }
 325 +       datum64 = (__BYTE_ORDER == __LITTLE_ENDIAN) ? bswap_64(datum64) : datum64;
 326         datum = datum64;
 327      } else {
 328         if (fseek(pwp->ifp, sizeof(struct pi_header) + (thisblock * sizeof(uint32_t)), 0))
 329 @@ -477,6 +682,7 @@ GetPW(pwp, number)
 330             perror("(index fread failed)");
 331             return NULL;
 332         }
 333 +       datum = (__BYTE_ORDER == __LITTLE_ENDIAN) ? bswap_32(datum) : datum;
 334      }
 335
 336         int r = 1;
 337 --
 338 1.8.4.2
 339