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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC] libxc: Add trusted decompressors
Add trusted decompressors based on hypervisor code.
This are used in mini-os by pv-grub.
Signed-off-by: Bastian Blank <waldi@xxxxxxxxxx>
diff -r efdc4bbfdd20 stubdom/Makefile
--- a/stubdom/Makefile Tue Feb 26 19:42:36 2013 +0100
+++ b/stubdom/Makefile Tue Feb 26 23:20:22 2013 +0100
@@ -328,7 +328,7 @@
.PHONY: libxc
libxc: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a
libxc-$(XEN_TARGET_ARCH)/libxenguest.a
libxc-$(XEN_TARGET_ARCH)/libxenctrl.a: cross-zlib
- CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE)
DESTDIR= -C libxc-$(XEN_TARGET_ARCH)
+ CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE)
DESTDIR= CONFIG_LIBXC_MINIOS=y -C libxc-$(XEN_TARGET_ARCH)
libxc-$(XEN_TARGET_ARCH)/libxenguest.a: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a
diff -r efdc4bbfdd20 tools/libxc/Makefile
--- a/tools/libxc/Makefile Tue Feb 26 19:42:36 2013 +0100
+++ b/tools/libxc/Makefile Tue Feb 26 23:20:22 2013 +0100
@@ -58,7 +58,6 @@
GUEST_SRCS-y += xc_dom_core.c xc_dom_boot.c
GUEST_SRCS-y += xc_dom_elfloader.c
GUEST_SRCS-$(CONFIG_X86) += xc_dom_bzimageloader.c
-GUEST_SRCS-$(CONFIG_X86) += xc_dom_decompress.c
GUEST_SRCS-$(CONFIG_ARM) += xc_dom_armzimageloader.c
GUEST_SRCS-y += xc_dom_binloader.c
GUEST_SRCS-y += xc_dom_compat_linux.c
@@ -69,6 +68,16 @@
GUEST_SRCS-$(CONFIG_ARM) += xc_dom_arm.c
GUEST_SRCS-$(CONFIG_ARM) += xc_hvm_build_arm.c
+ifeq ($(CONFIG_LIBXC_MINIOS),y)
+GUEST_SRCS-y += xc_dom_decompress_trusted.c
+GUEST_SRCS-y += xc_dom_decompress_trusted_bzip2.c
+GUEST_SRCS-y += xc_dom_decompress_trusted_lzma.c
+GUEST_SRCS-y += xc_dom_decompress_trusted_lzo1x.c
+GUEST_SRCS-y += xc_dom_decompress_trusted_xz.c
+else
+GUEST_SRCS-y += xc_dom_decompress.c
+endif
+
OSDEP_SRCS-y += xenctrl_osdep_ENOSYS.c
-include $(XEN_TARGET_ARCH)/Makefile
diff -r efdc4bbfdd20 tools/libxc/xc_dom_decompress_trusted.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_dom_decompress_trusted.c Tue Feb 26 23:20:22 2013 +0100
@@ -0,0 +1,49 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "xg_private.h"
+#include "xc_dom_decompress_trusted.h"
+
+struct xc_dom_image *trusted_dom;
+static unsigned char *output_blob;
+static unsigned int output_size;
+
+static void trusted_error(const char *msg)
+{
+ xc_dom_panic(trusted_dom->xch, XC_INVALID_KERNEL, "%s", msg);
+}
+
+static int trusted_flush(void *src, unsigned int size)
+{
+ void *n = realloc(output_blob, output_size + size);
+ if (!n)
+ return -1;
+ output_blob = n;
+
+ memcpy(&output_blob[output_size], src, size);
+ output_size += size;
+ return size;
+}
+
+int xc_dom_decompress_trusted_decompress(
+ decompress_fn fn, struct xc_dom_image *dom, void **blob, size_t *size)
+{
+ int ret;
+
+ trusted_dom = dom;
+ output_blob = NULL;
+ output_size = 0;
+
+ ret = fn(dom->kernel_blob, dom->kernel_size, NULL, trusted_flush, NULL,
NULL, trusted_error);
+
+ if (ret)
+ free(output_blob);
+ else {
+ *blob = output_blob;
+ *size = output_size;
+ }
+
+ return ret;
+}
+
diff -r efdc4bbfdd20 tools/libxc/xc_dom_decompress_trusted.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_dom_decompress_trusted.h Tue Feb 26 23:20:22 2013 +0100
@@ -0,0 +1,12 @@
+#include "xc_dom.h"
+
+typedef int decompress_fn(unsigned char *inbuf, unsigned int len,
+ int (*fill)(void*, unsigned int),
+ int (*flush)(void*, unsigned int),
+ unsigned char *outbuf, unsigned int *posp,
+ void (*error)(const char *x));
+
+int xc_dom_decompress_trusted_decompress(
+ decompress_fn fn, struct xc_dom_image *dom, void **blob, size_t *size)
+ __attribute__((visibility("hidden")));
+
diff -r efdc4bbfdd20 tools/libxc/xc_dom_decompress_trusted_bzip2.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_dom_decompress_trusted_bzip2.c Tue Feb 26 23:20:22
2013 +0100
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "xg_private.h"
+#include "xc_dom_decompress_trusted.h"
+
+#include "../../xen/common/bunzip2.c"
+
+int xc_try_bzip2_decode(
+ struct xc_dom_image *dom, void **blob, size_t *size)
+{
+ return xc_dom_decompress_trusted_decompress(bunzip2, dom, blob, size);
+}
diff -r efdc4bbfdd20 tools/libxc/xc_dom_decompress_trusted_lzma.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_dom_decompress_trusted_lzma.c Tue Feb 26 23:20:22
2013 +0100
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "xg_private.h"
+#include "xc_dom_decompress_trusted.h"
+
+#include "../../xen/common/unlzma.c"
+
+int xc_try_lzma_decode(
+ struct xc_dom_image *dom, void **blob, size_t *size)
+{
+ return xc_dom_decompress_trusted_decompress(unlzma, dom, blob, size);
+}
diff -r efdc4bbfdd20 tools/libxc/xc_dom_decompress_trusted_lzo1x.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_dom_decompress_trusted_lzo1x.c Tue Feb 26 23:20:22
2013 +0100
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "xg_private.h"
+#include "xc_dom_decompress_trusted.h"
+
+#include "../../xen/common/lzo.c"
+#include "../../xen/common/unlzo.c"
+
+int xc_try_lzo1x_decode(
+ struct xc_dom_image *dom, void **blob, size_t *size)
+{
+ return xc_dom_decompress_trusted_decompress(unlzo, dom, blob, size);
+}
diff -r efdc4bbfdd20 tools/libxc/xc_dom_decompress_trusted_xz.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xc_dom_decompress_trusted_xz.c Tue Feb 26 23:20:22
2013 +0100
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "xg_private.h"
+#include "xc_dom_decompress_trusted.h"
+
+// TODO
+#define XZ_DEC_X86
+
+#include "../../xen/common/unxz.c"
+
+int xc_try_xz_decode(
+ struct xc_dom_image *dom, void **blob, size_t *size)
+{
+ return xc_dom_decompress_trusted_decompress(unxz, dom, blob, size);
+}
diff -r efdc4bbfdd20 xen/common/decompress.h
--- a/xen/common/decompress.h Tue Feb 26 19:42:36 2013 +0100
+++ b/xen/common/decompress.h Tue Feb 26 23:20:22 2013 +0100
@@ -1,3 +1,5 @@
+#ifdef __XEN__
+
#include <xen/config.h>
#include <xen/cache.h>
#include <xen/decompress.h>
@@ -15,3 +17,14 @@
#define large_malloc xmalloc_bytes
#define large_free xfree
+
+#else
+
+#define STATIC static
+#define INIT
+#define INITDATA
+
+#define large_malloc malloc
+#define large_free free
+
+#endif
diff -r efdc4bbfdd20 xen/common/lzo.c
--- a/xen/common/lzo.c Tue Feb 26 19:42:36 2013 +0100
+++ b/xen/common/lzo.c Tue Feb 26 23:20:22 2013 +0100
@@ -68,7 +68,19 @@
* Richard Purdie <rpurdie@xxxxxxxxxxxxxx>
*/
+#ifndef __MINIOS__
#include <xen/types.h>
+#else
+#include <stdint.h>
+
+typedef uint32_t u32;
+typedef uint16_t u16;
+
+#define likely(a) a
+#define noinline
+#define unlikely(a) a
+#endif
+
#include <xen/lzo.h>
#define get_unaligned(_p) (*(_p))
#define put_unaligned(_val,_p) (*(_p)=_val)
diff -r efdc4bbfdd20 xen/common/unlzma.c
--- a/xen/common/unlzma.c Tue Feb 26 19:42:36 2013 +0100
+++ b/xen/common/unlzma.c Tue Feb 26 23:20:22 2013 +0100
@@ -54,7 +54,9 @@
* Copyright (c) 1999-2005 Igor Pavlov
*/
+#ifndef __MINIOS__
#include <xen/compiler.h>
+#endif
#define LZMA_IOBUF_SIZE 0x10000
diff -r efdc4bbfdd20 xen/common/unlzo.c
--- a/xen/common/unlzo.c Tue Feb 26 19:42:36 2013 +0100
+++ b/xen/common/unlzo.c Tue Feb 26 23:20:22 2013 +0100
@@ -32,7 +32,43 @@
#include "decompress.h"
#include <xen/lzo.h>
+
+#ifndef __MINIOS__
#include <asm/byteorder.h>
+#else
+#include <endian.h>
+#include <stdint.h>
+
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+
+static inline u16 be16_to_cpup(const u16 *p)
+{
+ u16 v = *p;
+#if BYTE_ORDER == LITTLE_ENDIAN
+ return (((v & 0x00ffU) << 8) |
+ ((v & 0xff00U) >> 8));
+#else
+ return v;
+#endif
+}
+
+static inline u32 be32_to_cpup(const u32 *p)
+{
+ u32 v = *p;
+#if BYTE_ORDER == LITTLE_ENDIAN
+ return (((v & 0x000000ffUL) << 24) |
+ ((v & 0x0000ff00UL) << 8) |
+ ((v & 0x00ff0000UL) >> 8) |
+ ((v & 0xff000000UL) >> 24));
+#else
+ return v;
+#endif
+}
+
+#define unlikely(a) a
+#endif
#if 1 /* ndef CONFIG_??? */
static inline u16 INIT get_unaligned_be16(void *p)
diff -r efdc4bbfdd20 xen/common/xz/private.h
--- a/xen/common/xz/private.h Tue Feb 26 19:42:36 2013 +0100
+++ b/xen/common/xz/private.h Tue Feb 26 23:20:22 2013 +0100
@@ -10,8 +10,53 @@
#ifndef XZ_PRIVATE_H
#define XZ_PRIVATE_H
+#ifndef __MINIOS__
#include <xen/kernel.h>
#include <asm/byteorder.h>
+#else
+#include <endian.h>
+#include <stddef.h>
+#include <stdint.h>
+
+typedef char bool_t;
+typedef uint8_t u8;
+typedef uint16_t u16;
+typedef uint32_t u32;
+typedef uint32_t __le32;
+
+static inline u32 cpu_to_le32(const u32 v)
+{
+#if BYTE_ORDER == BIG_ENDIAN
+ return (((v & 0x000000ffUL) << 24) |
+ ((v & 0x0000ff00UL) << 8) |
+ ((v & 0x00ff0000UL) >> 8) |
+ ((v & 0xff000000UL) >> 24));
+#else
+ return v;
+#endif
+}
+
+static inline u32 le32_to_cpup(const u32 *p)
+{
+ return cpu_to_le32(*p);
+}
+
+#define min(x,y) ({ \
+ const typeof(x) _x = (x); \
+ const typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x < _y ? _x : _y; })
+
+#define min_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
+#define max_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
+
+#define __force
+#define always_inline
+
+#endif
+
#define get_le32(p) le32_to_cpup((const uint32_t *)(p))
#if 1 /* ndef CONFIG_??? */
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