release/src-rt/linux/linux-2.6/fs/squashfs/sqlzma.c

   1 #include <linux/init.h>
   2 #include <linux/kernel.h>
   3 #include <linux/vmalloc.h>
   4
   5 #include "LzmaDec.h"
   6 #include "LzmaDec.c"
   7 #include "sqlzma.h"
   8
   9 static void *SzAlloc(void *p, size_t size) { p = p; return vmalloc(size); }
  10 static void SzFree(void *p, void *address) { p = p; vfree(address); }
  11 static ISzAlloc g_Alloc = { SzAlloc, SzFree };
  12
  13 int LzmaUncompress(void *dst, int *dstlen, void *src, int srclen)
  14 {
  15         int res;
  16         SizeT inSizePure;
  17         ELzmaStatus status;
  18
  19         if (srclen < LZMA_PROPS_SIZE)
  20         {
  21                 memcpy(dst, src, srclen);
  22                 return srclen;
  23         }
  24         inSizePure = srclen - LZMA_PROPS_SIZE;
  25         res = LzmaDecode(dst, dstlen, src + LZMA_PROPS_SIZE, &inSizePure,
  26                          src, LZMA_PROPS_SIZE, LZMA_FINISH_ANY, &status, &g_Alloc);
  27         srclen = inSizePure ;
  28
  29         if ((res == SZ_OK) ||
  30                 ((res == SZ_ERROR_INPUT_EOF) && (srclen == inSizePure)))
  31                 res = 0;
  32         return res;
  33 }