1 #include <linux/zlib.h>
3 /* bits taken from ppc */
5 extern void *avail_ram, *end_avail;
12 void *zalloc(unsigned size)
16 size = (size + 7) & -8;
18 if (avail_ram > end_avail) {
19 //puts("oops... out of memory\n");
34 void gunzip (void *dst, int dstlen, unsigned char *src, int *lenp)
42 if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
43 //puts("bad gzipped data\n");
46 if ((flags & EXTRA_FIELD) != 0)
47 i = 12 + src[10] + (src[11] << 8);
48 if ((flags & ORIG_NAME) != 0)
51 if ((flags & COMMENT) != 0)
54 if ((flags & HEAD_CRC) != 0)
57 //puts("gunzip: ran out of data in header\n");
61 s.workspace = zalloc(zlib_inflate_workspacesize());
62 r = zlib_inflateInit2(&s, -MAX_WBITS);
64 //puts("inflateInit2 returned "); puthex(r); puts("\n");
68 s.avail_in = *lenp - i;
71 r = zlib_inflate(&s, Z_FINISH);
72 if (r != Z_OK && r != Z_STREAM_END) {
73 //puts("inflate returned "); puthex(r); puts("\n");
76 *lenp = s.next_out - (unsigned char *) dst;