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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/zconf.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/linux/zconf.h')
-rw-r--r--include/linux/zconf.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/include/linux/zconf.h b/include/linux/zconf.h
new file mode 100644
index 000000000000..f1cfd66b9554
--- /dev/null
+++ b/include/linux/zconf.h
@@ -0,0 +1,45 @@
1/* zconf.h -- configuration of the zlib compression library
2 * Copyright (C) 1995-1998 Jean-loup Gailly.
3 * For conditions of distribution and use, see copyright notice in zlib.h
4 */
5
6/* @(#) $Id$ */
7
8#ifndef _ZCONF_H
9#define _ZCONF_H
10
11/* The memory requirements for deflate are (in bytes):
12 (1 << (windowBits+2)) + (1 << (memLevel+9))
13 that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
14 plus a few kilobytes for small objects. For example, if you want to reduce
15 the default memory requirements from 256K to 128K, compile with
16 make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
17 Of course this will generally degrade compression (there's no free lunch).
18
19 The memory requirements for inflate are (in bytes) 1 << windowBits
20 that is, 32K for windowBits=15 (default value) plus a few kilobytes
21 for small objects.
22*/
23
24/* Maximum value for memLevel in deflateInit2 */
25#ifndef MAX_MEM_LEVEL
26# define MAX_MEM_LEVEL 8
27#endif
28
29/* Maximum value for windowBits in deflateInit2 and inflateInit2.
30 * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
31 * created by gzip. (Files created by minigzip can still be extracted by
32 * gzip.)
33 */
34#ifndef MAX_WBITS
35# define MAX_WBITS 15 /* 32K LZ77 window */
36#endif
37
38 /* Type declarations */
39
40typedef unsigned char Byte; /* 8 bits */
41typedef unsigned int uInt; /* 16 bits or more */
42typedef unsigned long uLong; /* 32 bits or more */
43typedef void *voidp;
44
45#endif /* _ZCONF_H */