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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH XEN v2 14/15] tools: Refactor foreign memory mapping into libxenforeignmemory
libxenforeignmemory will provide a stable API and ABI for mapping
foreign domain memory (subject to appropriate privileges).
The new library exposes an interface equivalent to
xc_map_foreign_memory_bulk, which all the other
xc_map_foreign_memory_* functions (which remain in libxc) are
implemented in terms of.
Upon request (via #define XC_WANT_COMPAT_MAP_FOREIGN_API) libxenctrl
will provide a compat API for the old names. This is used by qemu-xen
and qemu-trad as well as various in tree things (which required
de-dupping various #includes in some too to get the #define before the
first).
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
Must be applied with:
- "qemu-xen-traditional: qemu-xen-traditional: Add
libxenforeignmemory to rpath-link" and a corresponding QEMU_TAG
update folded here.
- "mini-os: mini-os: Include libxenforeignmemory with libxc" and a
corresponding bump to MINIOS_UPSTREAM_REVISION folded in here.
---
.gitignore | 2 +
docs/misc/toolstack-library-abis.pandoc | 22 +-
stubdom/Makefile | 21 +-
tools/Makefile | 3 +
tools/Rules.mk | 11 +-
tools/console/daemon/utils.c | 1 -
tools/console/daemon/utils.h | 1 +
tools/libxc/Makefile | 8 +-
tools/libxc/include/xenctrl.h | 26 --
tools/libxc/include/xenctrl_compat.h | 36 +++
tools/libxc/xc_domain_restore.c | 4 +-
tools/libxc/xc_domain_save.c | 4 +-
tools/libxc/xc_foreign_memory.c | 49 +---
tools/libxc/xc_freebsd_osdep.c | 137 ----------
tools/libxc/xc_linux_osdep.c | 296 ---------------------
tools/libxc/xc_minios.c | 29 --
tools/libxc/xc_netbsd.c | 73 -----
tools/libxc/xc_private.c | 13 +-
tools/libxc/xc_private.h | 11 +-
tools/libxc/xc_solaris.c | 73 -----
tools/libxc/xc_sr_restore.c | 4 +-
tools/libxc/xc_sr_save.c | 4 +-
tools/libxc/xc_vm_event.c | 10 +-
tools/libxc/xg_private.h | 3 +-
tools/libxenforeignmemory/Makefile | 67 +++++
tools/libxenforeignmemory/compat.c | 72 +++++
tools/libxenforeignmemory/core.c | 65 +++++
tools/libxenforeignmemory/freebsd.c | 126 +++++++++
.../libxenforeignmemory/include/xenforeignmemory.h | 68 +++++
tools/libxenforeignmemory/libxenforeignmemory.map | 7 +
tools/libxenforeignmemory/linux.c | 284 ++++++++++++++++++++
tools/libxenforeignmemory/minios.c | 59 ++++
tools/libxenforeignmemory/netbsd.c | 92 +++++++
tools/libxenforeignmemory/private.h | 47 ++++
tools/libxenforeignmemory/solaris.c | 95 +++++++
tools/libxl/libxl_internal.h | 1 +
tools/misc/xen-mfndump.c | 1 +
tools/ocaml/libs/xc/xenctrl_stubs.c | 1 +
tools/python/xen/lowlevel/xc/xc.c | 2 +-
tools/xenmon/xenbaked.c | 1 +
tools/xenpaging/pagein.c | 1 -
tools/xenpaging/xenpaging.c | 1 -
tools/xenpaging/xenpaging.h | 2 +
tools/xenstore/xenstored_core.c | 1 -
tools/xenstore/xenstored_core.h | 1 +
tools/xentrace/xenctx.c | 3 +-
tools/xentrace/xentrace.c | 1 +
47 files changed, 1118 insertions(+), 721 deletions(-)
delete mode 100644 tools/libxc/xc_freebsd_osdep.c
delete mode 100644 tools/libxc/xc_linux_osdep.c
create mode 100644 tools/libxenforeignmemory/Makefile
create mode 100644 tools/libxenforeignmemory/compat.c
create mode 100644 tools/libxenforeignmemory/core.c
create mode 100644 tools/libxenforeignmemory/freebsd.c
create mode 100644 tools/libxenforeignmemory/include/xenforeignmemory.h
create mode 100644 tools/libxenforeignmemory/libxenforeignmemory.map
create mode 100644 tools/libxenforeignmemory/linux.c
create mode 100644 tools/libxenforeignmemory/minios.c
create mode 100644 tools/libxenforeignmemory/netbsd.c
create mode 100644 tools/libxenforeignmemory/private.h
create mode 100644 tools/libxenforeignmemory/solaris.c
diff --git a/.gitignore b/.gitignore
index 5841570..bb643f7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,6 +63,7 @@ stubdom/libxentoollog-*
stubdom/libxenevtchn-*
stubdom/libxengnttab-*
stubdom/libxencall-*
+stubdom/libxenforeignmemory-*
stubdom/libxc-*
stubdom/lwip-*
stubdom/mini-os-*
@@ -93,6 +94,7 @@ tools/libxentoollog/headers.chk
tools/libxenevtchn/headers.chk
tools/libxengnttab/headers.chk
tools/libxencall/headers.chk
+tools/libxenforeignmemory/headers.chk
tools/blktap2/daemon/blktapctrl
tools/blktap2/drivers/img2qcow
tools/blktap2/drivers/lock-util
diff --git a/docs/misc/toolstack-library-abis.pandoc
b/docs/misc/toolstack-library-abis.pandoc
index 35674cc..63b83bc 100644
--- a/docs/misc/toolstack-library-abis.pandoc
+++ b/docs/misc/toolstack-library-abis.pandoc
@@ -166,6 +166,16 @@ Interface Underlying interface
Known external
`xencall_free_buffer` `xencall_free_buffer_pages`
`xencall_free_buffer_pages` `munmap(2)`, `madvise(2)`
+## `libxenforeignmemory`: privileged foreign mappings
+
+Mapping foreign guest memory.
+
+Interface Underlying interface Known
external users
+--------------------------------- ------------------------------
--------------------
+`xenforeignmemory_open` `open(2)`
+`xenforeignmemory_close` `close(2)`
+`xenforeignmemory_map` `IOCTL_PRIVCMD_MMAPBATCH` etc
+
# Unstable libraries
These libraries do not provide a stable interface and are required to
@@ -269,12 +279,14 @@ The following are private:
### Mapping foreign memory
-Interface Underlying interface Known
external users
---------------------------------- ------------------------------
--------------------
-`xc_map_foreign_pages` `IOCTL_PRIVCMD_MMAP...` qemu-pv
-`xc_map_foreign_range` `IOCTL_PRIVCMD_MMAP...` qemu-dm, and
qemu-pv
+All implemented in terms of `xenforeignmemory_map`.
+
+Interface Known external users
+--------------------------------- --------------------
+`xc_map_foreign_pages` qemu-pv
+`xc_map_foreign_range` qemu-dm, qemu-pv
`xc_map_foreign_ranges`
-`xc_map_foreign_bulk` `IOCTL_PRIVCMD_MMAPBATCH_V2` qemu-dm
+`xc_map_foreign_bulk` qemu-dm
### Managing guest memory map
diff --git a/stubdom/Makefile b/stubdom/Makefile
index ec058ca..529f5c3 100644
--- a/stubdom/Makefile
+++ b/stubdom/Makefile
@@ -336,6 +336,12 @@ mk-headers-$(XEN_TARGET_ARCH): $(IOEMU_LINKFARM_TARGET)
ln -sf $(XEN_ROOT)/tools/libxencall/include/*.h include/ && \
ln -sf $(XEN_ROOT)/tools/libxencall/*.c . && \
ln -sf $(XEN_ROOT)/tools/libxencall/Makefile . )
+ mkdir -p libxenforeignmemory-$(XEN_TARGET_ARCH)/include
+ [ -h libxenforeignmemory-$(XEN_TARGET_ARCH)/Makefile ] || ( cd
libxenforeignmemory-$(XEN_TARGET_ARCH) && \
+ ln -sf $(XEN_ROOT)/tools/libxenforeignmemory/*.h . && \
+ ln -sf $(XEN_ROOT)/tools/libxenforeignmemory/include/*.h include/ && \
+ ln -sf $(XEN_ROOT)/tools/libxenforeignmemory/*.c . && \
+ ln -sf $(XEN_ROOT)/tools/libxenforeignmemory/Makefile . )
mkdir -p libxc-$(XEN_TARGET_ARCH)
[ -h libxc-$(XEN_TARGET_ARCH)/Makefile ] || ( cd
libxc-$(XEN_TARGET_ARCH) && \
ln -sf $(XEN_ROOT)/tools/libxc/*.h . && \
@@ -390,6 +396,7 @@ libxengnttab-$(XEN_TARGET_ARCH)/libxengnttab.a:
$(NEWLIB_STAMPFILE)
$(MAKE) -C $(XEN_ROOT)/tools/include
$(MAKE) DESTDIR= -C $(MINI_OS) links
CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE)
DESTDIR= -C libxengnttab-$(XEN_TARGET_ARCH)
+APP_LDLIBS += -L$(XEN_ROOT)/stubdom/libxencall-$(MINIOS_TARGET_ARCH)
-whole-archive -lxencall -no-whole-archive
#######
# libxencall
@@ -401,6 +408,18 @@ libxencall-$(XEN_TARGET_ARCH)/libxencall.a:
$(NEWLIB_STAMPFILE)
$(MAKE) -C $(XEN_ROOT)/tools/include
$(MAKE) DESTDIR= -C $(MINI_OS) links
CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE)
DESTDIR= -C libxencall-$(XEN_TARGET_ARCH)
+APP_LDLIBS += -L$(XEN_ROOT)/stubdom/libxencall-$(MINIOS_TARGET_ARCH)
-whole-archive -lxencall -no-whole-archive
+
+#######
+# libxenforeignmemory
+#######
+
+.PHONY: libxenforeignmemory
+libxenforeignmemory:
libxenforeignmemory-$(XEN_TARGET_ARCH)/libxenforeignmemory.a
+libxenforeignmemory-$(XEN_TARGET_ARCH)/libxenforeignmemory.a:
$(NEWLIB_STAMPFILE)
+ $(MAKE) -C $(XEN_ROOT)/tools/include
+ $(MAKE) DESTDIR= -C $(MINI_OS) links
+ CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE)
DESTDIR= -C libxenforeignmemory-$(XEN_TARGET_ARCH)
#######
# libxc
@@ -408,7 +427,7 @@ libxencall-$(XEN_TARGET_ARCH)/libxencall.a:
$(NEWLIB_STAMPFILE)
.PHONY: libxc
libxc: libxc-$(XEN_TARGET_ARCH)/libxenctrl.a
libxc-$(XEN_TARGET_ARCH)/libxenguest.a
-libxc-$(XEN_TARGET_ARCH)/libxenctrl.a: libxentoollog libxenevtchn libxengnttab
libxencall cross-zlib
+libxc-$(XEN_TARGET_ARCH)/libxenctrl.a: libxentoollog libxenevtchn libxengnttab
libxencall libxenforeignmemory cross-zlib
$(MAKE) -C $(XEN_ROOT)/tools/include
$(MAKE) DESTDIR= -C $(MINI_OS) links
CPPFLAGS="$(TARGET_CPPFLAGS)" CFLAGS="$(TARGET_CFLAGS)" $(MAKE)
DESTDIR= CONFIG_LIBXC_MINIOS=y -C libxc-$(XEN_TARGET_ARCH)
diff --git a/tools/Makefile b/tools/Makefile
index e5c8879..30abd57 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -7,6 +7,7 @@ SUBDIRS-y += libxentoollog
SUBDIRS-y += libxenevtchn
SUBDIRS-y += libxengnttab
SUBDIRS-y += libxencall
+SUBDIRS-y += libxenforeignmemory
SUBDIRS-y += libxc
SUBDIRS-$(FLASK_ENABLE) += flask
SUBDIRS-y += xenstore
@@ -253,6 +254,7 @@ subdir-all-qemu-xen-dir: qemu-xen-dir-find
--source-path=$$source \
--extra-cflags="-DXC_WANT_COMPAT_EVTCHN_API=1 \
-DXC_WANT_COMPAT_GNTTAB_API=1 \
+ -DXC_WANT_COMPAT_MAP_FOREIGN_API=1 \
-I$(XEN_ROOT)/tools/include \
-I$(XEN_ROOT)/tools/libxentoollog/include \
-I$(XEN_ROOT)/tools/libxenevtchn/include \
@@ -267,6 +269,7 @@ subdir-all-qemu-xen-dir: qemu-xen-dir-find
-Wl,-rpath-link=$(XEN_ROOT)/tools/libxenevtchn \
-Wl,-rpath-link=$(XEN_ROOT)/tools/libxengnttab \
-Wl,-rpath-link=$(XEN_ROOT)/tools/libxencall \
+ -Wl,-rpath-link=$(XEN_ROOT)/tools/libxenforeignmemory \
$(QEMU_UPSTREAM_RPATH)" \
--bindir=$(LIBEXEC_BIN) \
--datadir=$(SHAREDIR)/qemu-xen \
diff --git a/tools/Rules.mk b/tools/Rules.mk
index 405a6a5..4a67f1f 100644
--- a/tools/Rules.mk
+++ b/tools/Rules.mk
@@ -14,6 +14,7 @@ XEN_LIBXENTOOLLOG = $(XEN_ROOT)/tools/libxentoollog
XEN_LIBXENEVTCHN = $(XEN_ROOT)/tools/libxenevtchn
XEN_LIBXENGNTTAB = $(XEN_ROOT)/tools/libxengnttab
XEN_LIBXENCALL = $(XEN_ROOT)/tools/libxencall
+XEN_LIBXENFOREIGNMEMORY = $(XEN_ROOT)/tools/libxenforeignmemory
XEN_LIBXC = $(XEN_ROOT)/tools/libxc
XEN_XENLIGHT = $(XEN_ROOT)/tools/libxl
XEN_XENSTORE = $(XEN_ROOT)/tools/xenstore
@@ -103,12 +104,16 @@ CFLAGS_libxencall = -I$(XEN_LIBXENCALL)/include
$(CFLAGS_xeninclude)
LDLIBS_libxencall = $(XEN_LIBXENCALL)/libxencall$(libextension)
SHLIB_libxencall = -Wl,-rpath-link=$(XEN_LIBXENCALL)
-CFLAGS_libxenctrl = -I$(XEN_LIBXC)/include $(CFLAGS_libxentoollog)
$(CFLAGS_xeninclude)
-SHDEPS_libxenctrl = $(SHLIB_libxentoollog) $(SHLIB_libxenevtchn)
$(SHLIB_libxengnttab) $(SHLIB_libxengntshr) $(SHLIB_libxencall)
+CFLAGS_libxenforeignmemory = -I$(XEN_LIBXENFOREIGNMEMORY)/include
$(CFLAGS_xeninclude)
+LDLIBS_libxenforeignmemory =
$(XEN_LIBXENFOREIGNMEMORY)/libxenforeignmemory$(libextension)
+SHLIB_libxenforeignmemory = -Wl,-rpath-link=$(XEN_LIBXENFOREIGNMEMORY)
+
+CFLAGS_libxenctrl = -I$(XEN_LIBXC)/include $(CFLAGS_libxentoollog)
$(CFLAGS_libxenforeignmemory) $(CFLAGS_xeninclude)
+SHDEPS_libxenctrl = $(SHLIB_libxentoollog) $(SHLIB_libxenevtchn)
$(SHLIB_libxengnttab) $(SHLIB_libxengntshr) $(SHLIB_libxencall)
$(SHLIB_libxenforeignmemory)
LDLIBS_libxenctrl = $(SHDEPS_libxenctrl) $(XEN_LIBXC)/libxenctrl$(libextension)
SHLIB_libxenctrl = $(SHDEPS_libxenctrl) -Wl,-rpath-link=$(XEN_LIBXC)
-CFLAGS_libxenguest = -I$(XEN_LIBXC)/include $(CFLAGS_libxenevtchn)
$(CFLAGS_xeninclude)
+CFLAGS_libxenguest = -I$(XEN_LIBXC)/include $(CFLAGS_libxenevtchn)
$(CFLAGS_libxenforeignmemory) $(CFLAGS_xeninclude)
SHDEPS_libxenguest = $(SHLIB_libxenevtchn)
LDLIBS_libxenguest = $(SHDEPS_libxenguest)
$(XEN_LIBXC)/libxenguest$(libextension)
SHLIB_libxenguest = $(SHDEPS_libxenguest) -Wl,-rpath-link=L$(XEN_LIBXC)
diff --git a/tools/console/daemon/utils.c b/tools/console/daemon/utils.c
index 71dd185..edc1595 100644
--- a/tools/console/daemon/utils.c
+++ b/tools/console/daemon/utils.c
@@ -34,7 +34,6 @@
#include <string.h>
#include <signal.h>
-#include "xenctrl.h"
#include "utils.h"
struct xs_handle *xs;
diff --git a/tools/console/daemon/utils.h b/tools/console/daemon/utils.h
index 8725dcd..45c7c34 100644
--- a/tools/console/daemon/utils.h
+++ b/tools/console/daemon/utils.h
@@ -24,6 +24,7 @@
#include <stdbool.h>
#include <syslog.h>
#include <stdio.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xenstore.h>
diff --git a/tools/libxc/Makefile b/tools/libxc/Makefile
index 42fbabe..79afb78 100644
--- a/tools/libxc/Makefile
+++ b/tools/libxc/Makefile
@@ -41,8 +41,8 @@ CTRL_SRCS-y += xc_kexec.c
CTRL_SRCS-y += xc_resource.c
CTRL_SRCS-$(CONFIG_X86) += xc_psr.c
CTRL_SRCS-$(CONFIG_X86) += xc_pagetab.c
-CTRL_SRCS-$(CONFIG_Linux) += xc_linux.c xc_linux_osdep.c
-CTRL_SRCS-$(CONFIG_FreeBSD) += xc_freebsd.c xc_freebsd_osdep.c
+CTRL_SRCS-$(CONFIG_Linux) += xc_linux.c
+CTRL_SRCS-$(CONFIG_FreeBSD) += xc_freebsd.c
CTRL_SRCS-$(CONFIG_SunOS) += xc_solaris.c
CTRL_SRCS-$(CONFIG_NetBSD) += xc_netbsd.c
CTRL_SRCS-$(CONFIG_NetBSDRump) += xc_netbsd.c
@@ -126,7 +126,7 @@ $(CTRL_PIC_OBJS) $(GUEST_PIC_OBJS): CFLAGS += -include
$(XEN_ROOT)/tools/config.
# libxenguest includes xc_private.h, so needs this despite not using
# this functionality directly.
$(CTRL_LIB_OBJS) $(GUEST_LIB_OBJS) \
-$(CTRL_PIC_OBJS) $(GUEST_PIC_OBJS): CFLAGS += $(CFLAGS_libxencall)
+$(CTRL_PIC_OBJS) $(GUEST_PIC_OBJS): CFLAGS += $(CFLAGS_libxencall)
$(CFLAGS_libxenforeignmemory)
$(CTRL_LIB_OBJS) $(CTRL_PIC_OBJS): CFLAGS += $(CFLAGS_libxengnttab)
$(CFLAGS_libxengntshr)
@@ -208,7 +208,7 @@ libxenctrl.so.$(MAJOR): libxenctrl.so.$(MAJOR).$(MINOR)
$(SYMLINK_SHLIB) $< $@
libxenctrl.so.$(MAJOR).$(MINOR): $(CTRL_PIC_OBJS)
- $(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG)
-Wl,libxenctrl.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(LDLIBS_libxentoollog)
$(LDLIBS_libxenevtchn) $(LDLIBS_libxengnttab) $(LDLIBS_libxengntshr)
$(LDLIBS_libxencall) $(PTHREAD_LIBS) $(APPEND_LDFLAGS)
+ $(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG)
-Wl,libxenctrl.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $^ $(LDLIBS_libxentoollog)
$(LDLIBS_libxenevtchn) $(LDLIBS_libxengnttab) $(LDLIBS_libxengntshr)
$(LDLIBS_libxencall) $(LDLIBS_libxenforeignmemory) $(PTHREAD_LIBS)
$(APPEND_LDFLAGS)
# libxenguest
diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 201fd70..bfa11a7 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -1349,32 +1349,6 @@ int xc_lockprof_query(xc_interface *xch,
void *xc_memalign(xc_interface *xch, size_t alignment, size_t size);
/**
- * Memory maps a range within one domain to a local address range. Mappings
- * should be unmapped with munmap and should follow the same rules as mmap
- * regarding page alignment. Returns NULL on failure.
- *
- * @parm xch a handle on an open hypervisor interface
- * @parm dom the domain to map memory from
- * @parm size the amount of memory to map (in multiples of page size)
- * @parm prot same flag as in mmap().
- * @parm mfn the frame address to map.
- */
-void *xc_map_foreign_range(xc_interface *xch, uint32_t dom,
- int size, int prot,
- unsigned long mfn );
-
-void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
- const xen_pfn_t *arr, int num );
-
-/**
- * Like xc_map_foreign_pages(), except it can succeed partially.
- * When a page cannot be mapped, its respective field in @err is
- * set to the corresponding errno value.
- */
-void *xc_map_foreign_bulk(xc_interface *xch, uint32_t dom, int prot,
- const xen_pfn_t *arr, int *err, unsigned int num);
-
-/**
* Translates a virtual address in the context of a given domain and
* vcpu returning the GFN containing the address (that is, an MFN for
* PV guests, a PFN for HVM guests). Returns 0 for failure.
diff --git a/tools/libxc/include/xenctrl_compat.h
b/tools/libxc/include/xenctrl_compat.h
index d99fa11..54c23a4 100644
--- a/tools/libxc/include/xenctrl_compat.h
+++ b/tools/libxc/include/xenctrl_compat.h
@@ -12,6 +12,42 @@
#ifndef XENCTRL_COMPAT_H
#define XENCTRL_COMPAT_H
+#ifdef XC_WANT_COMPAT_MAP_FOREIGN_API
+/**
+ * Memory maps a range within one domain to a local address range. Mappings
+ * should be unmapped with munmap and should follow the same rules as mmap
+ * regarding page alignment. Returns NULL on failure.
+ *
+ * @parm xch a handle on an open hypervisor interface
+ * @parm dom the domain to map memory from
+ * @parm size the amount of memory to map (in multiples of page size)
+ * @parm prot same flag as in mmap().
+ * @parm mfn the frame address to map.
+ */
+void *xc_map_foreign_range(xc_interface *xch, uint32_t dom,
+ int size, int prot,
+ unsigned long mfn );
+
+void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
+ const xen_pfn_t *arr, int num );
+
+/* Nothing within the library itself other than the compat wrapper
+ * itself should be using this, everything inside has access to
+ * xenforeignmemory_map().
+ */
+#if !defined(XC_INTERNAL_COMPAT_MAP_FOREIGN_API) || \
+ defined(XC_BUILDING_COMPAT_MAP_FOREIGN_API)
+/**
+ * Like xc_map_foreign_pages(), except it can succeed partially.
+ * When a page cannot be mapped, its respective field in @err is
+ * set to the corresponding errno value.
+ */
+void *xc_map_foreign_bulk(xc_interface *xch, uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err, unsigned int num);
+#endif
+
+#endif
+
#ifdef XC_WANT_COMPAT_EVTCHN_API
typedef struct xenevtchn_handle xc_evtchn;
diff --git a/tools/libxc/xc_domain_restore.c b/tools/libxc/xc_domain_restore.c
index 8435f6b..5d44512 100644
--- a/tools/libxc/xc_domain_restore.c
+++ b/tools/libxc/xc_domain_restore.c
@@ -1284,8 +1284,8 @@ static int apply_batch(xc_interface *xch, uint32_t dom,
struct restore_ctx *ctx,
PERROR("allocation for pfn_err failed");
return -1;
}
- region_base = xc_map_foreign_bulk(
- xch, dom, PROT_WRITE, region_mfn, pfn_err, j);
+ region_base = xenforeignmemory_map(xch->fmem,
+ dom, PROT_WRITE, region_mfn, pfn_err, j);
if ( region_base == NULL )
{
diff --git a/tools/libxc/xc_domain_save.c b/tools/libxc/xc_domain_save.c
index 3222473..412819f 100644
--- a/tools/libxc/xc_domain_save.c
+++ b/tools/libxc/xc_domain_save.c
@@ -1265,8 +1265,8 @@ int xc_domain_save(xc_interface *xch, int io_fd, uint32_t
dom, uint32_t max_iter
if ( batch == 0 )
goto skip; /* vanishingly unlikely... */
- region_base = xc_map_foreign_bulk(
- xch, dom, PROT_READ, pfn_type, pfn_err, batch);
+ region_base = xenforeignmemory_map(xch->fmem,
+ dom, PROT_READ, pfn_type, pfn_err, batch);
if ( region_base == NULL )
{
PERROR("map batch failed");
diff --git a/tools/libxc/xc_foreign_memory.c b/tools/libxc/xc_foreign_memory.c
index c96489d..b6bf132 100644
--- a/tools/libxc/xc_foreign_memory.c
+++ b/tools/libxc/xc_foreign_memory.c
@@ -18,6 +18,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
*/
+#define XC_BUILDING_COMPAT_MAP_FOREIGN_API
#include "xc_private.h"
void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
@@ -35,7 +36,7 @@ void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom,
int prot,
if (!err)
return NULL;
- res = xc_map_foreign_bulk(xch, dom, prot, arr, err, num);
+ res = xenforeignmemory_map(xch->fmem, dom, prot, arr, err, num);
if (res) {
for (i = 0; i < num; i++) {
if (err[i]) {
@@ -101,53 +102,11 @@ void *xc_map_foreign_ranges(xc_interface *xch,
return ret;
}
-/*
- * stub for all not yet converted OSes (NetBSD and Solaris). New OSes should
- * just implement xc_map_foreign_bulk.
- */
-#if defined(__NetBSD__) || defined(__sun__)
-void *osdep_map_foreign_batch(xc_interface *xch, uint32_t dom, int prot,
- xen_pfn_t *arr, int num );
-void *xc_map_foreign_bulk(xc_interface *xch,
- uint32_t dom, int prot,
+void *xc_map_foreign_bulk(xc_interface *xch, uint32_t dom, int prot,
const xen_pfn_t *arr, int *err, unsigned int num)
{
- xen_pfn_t *pfn;
- unsigned int i;
- void *ret;
-
- if ((int)num <= 0) {
- errno = EINVAL;
- return NULL;
- }
-
- pfn = malloc(num * sizeof(*pfn));
- if (!pfn) {
- errno = ENOMEM;
- return NULL;
- }
-
- memcpy(pfn, arr, num * sizeof(*arr));
- ret = osdep_map_foreign_batch(xch, dom, prot, pfn, num);
-
- if (ret) {
- for (i = 0; i < num; ++i)
- switch (pfn[i] ^ arr[i]) {
- case 0:
- err[i] = 0;
- break;
- default:
- err[i] = -EINVAL;
- break;
- }
- } else
- memset(err, 0, num * sizeof(*err));
-
- free(pfn);
-
- return ret;
+ return xenforeignmemory_map(xch->fmem, dom, prot, arr, err, num);
}
-#endif
/*
* Local variables:
diff --git a/tools/libxc/xc_freebsd_osdep.c b/tools/libxc/xc_freebsd_osdep.c
deleted file mode 100644
index d09e0da..0000000
--- a/tools/libxc/xc_freebsd_osdep.c
+++ /dev/null
@@ -1,137 +0,0 @@
-
/******************************************************************************
- *
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
- *
- * xc_gnttab functions:
- * Copyright (c) 2007-2008, D G Murray <Derek.Murray@xxxxxxxxxxxx>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-
-#include <xen/memory.h>
-
-#include "xc_private.h"
-
-#define PRIVCMD_DEV "/dev/xen/privcmd"
-
-/*------------------------- Privcmd device interface
-------------------------*/
-int osdep_privcmd_open(xc_interface *xch)
-{
- int flags, saved_errno;
- int fd = open(PRIVCMD_DEV, O_RDWR);
-
- if ( fd == -1 )
- {
- PERROR("Could not obtain handle on privileged command interface "
- PRIVCMD_DEV);
- return -1
- }
-
- /*
- * Although we return the file handle as the 'xc handle' the API
- * does not specify / guarentee that this integer is in fact
- * a file handle. Thus we must take responsiblity to ensure
- * it doesn't propagate (ie leak) outside the process.
- */
- if ( (flags = fcntl(fd, F_GETFD)) < 0 )
- {
- PERROR("Could not get file handle flags");
- goto error;
- }
-
- flags |= FD_CLOEXEC;
-
- if ( fcntl(fd, F_SETFD, flags) < 0 )
- {
- PERROR("Could not set file handle flags");
- goto error;
- }
-
- xch->privcmdfd = fd;
- return 0;
-
- error:
- saved_errno = errno;
- close(fd);
- errno = saved_errno;
-
- return -1;
-}
-
-int osdep_privcmd_close(xc_interface *xch)
-{
- int fd = xch->privcmdfd;
- if ( fd == -1 )
- return 0;
- return close(fd);
-}
-
-/*----------------------- Privcmd foreign map interface
----------------------*/
-void *xc_map_foreign_bulk(xc_interface *xch,
- uint32_t dom, int prot,
- const xen_pfn_t *arr, int *err,
- unsigned int num)
-{
- int fd = xch->privcmdfd;
- privcmd_mmapbatch_t ioctlx;
- void *addr;
- int rc;
-
- addr = mmap(NULL, num << XC_PAGE_SHIFT, prot, MAP_SHARED, fd, 0);
- if ( addr == MAP_FAILED )
- {
- PERROR("xc_map_foreign_bulk: mmap failed");
- return NULL;
- }
-
- ioctlx.num = num;
- ioctlx.dom = dom;
- ioctlx.addr = (unsigned long)addr;
- ioctlx.arr = arr;
- ioctlx.err = err;
-
- rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
- if ( rc < 0 )
- {
- int saved_errno = errno;
- PERROR("xc_map_foreign_bulk: ioctl failed");
- (void)munmap(addr, num << XC_PAGE_SHIFT);
- errno = saved_errno;
- return NULL;
- }
-
- return addr;
-}
-
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
diff --git a/tools/libxc/xc_linux_osdep.c b/tools/libxc/xc_linux_osdep.c
deleted file mode 100644
index 9f8805a..0000000
--- a/tools/libxc/xc_linux_osdep.c
+++ /dev/null
@@ -1,296 +0,0 @@
-
/******************************************************************************
- *
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
- *
- * xc_gnttab functions:
- * Copyright (c) 2007-2008, D G Murray <Derek.Murray@xxxxxxxxxxxx>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <sys/mman.h>
-#include <sys/ioctl.h>
-
-#include <xen/memory.h>
-
-#include "xenctrl.h"
-
-#include "xc_private.h"
-
-#define ROUNDUP(_x,_w) (((unsigned long)(_x)+(1UL<<(_w))-1) & ~((1UL<<(_w))-1))
-
-int osdep_privcmd_open(xc_interface *xch)
-{
- int flags, saved_errno;
- int fd = open("/proc/xen/privcmd", O_RDWR);
-
- if ( fd == -1 )
- {
- PERROR("Could not obtain handle on privileged command interface");
- return -1;
- }
-
- /* Although we return the file handle as the 'xc handle' the API
- does not specify / guarentee that this integer is in fact
- a file handle. Thus we must take responsiblity to ensure
- it doesn't propagate (ie leak) outside the process */
- if ( (flags = fcntl(fd, F_GETFD)) < 0 )
- {
- PERROR("Could not get file handle flags");
- goto error;
- }
-
- flags |= FD_CLOEXEC;
-
- if ( fcntl(fd, F_SETFD, flags) < 0 )
- {
- PERROR("Could not set file handle flags");
- goto error;
- }
-
- xch->privcmdfd = fd;
- return 0;
-
- error:
- saved_errno = errno;
- close(fd);
- errno = saved_errno;
- return -1;
-}
-
-int osdep_privcmd_close(xc_interface *xch)
-{
- int fd = xch->privcmdfd;
- if (fd == -1)
- return 0;
- return close(fd);
-}
-
-static int map_foreign_batch_single(int fd, uint32_t dom,
- xen_pfn_t *mfn, unsigned long addr)
-{
- privcmd_mmapbatch_t ioctlx;
- int rc;
-
- ioctlx.num = 1;
- ioctlx.dom = dom;
- ioctlx.addr = addr;
- ioctlx.arr = mfn;
-
- do
- {
- *mfn ^= PRIVCMD_MMAPBATCH_PAGED_ERROR;
- usleep(100);
- rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
- }
- while ( (rc < 0) && (errno == ENOENT) );
-
- return rc;
-}
-
-/*
- * Retry mmap of all paged gfns in batches
- * retuns < 0 on fatal error
- * returns 0 if all gfns left paging state
- * returns > 0 if some gfns are still in paging state
- *
- * Walk all gfns and try to assemble blocks of gfns in paging state.
- * This will keep the request ring full and avoids delays.
- */
-static int retry_paged(int fd, uint32_t dom, void *addr,
- const xen_pfn_t *arr, int *err, unsigned int num)
-{
- privcmd_mmapbatch_v2_t ioctlx;
- int rc, paged = 0, i = 0;
-
- do
- {
- /* Skip gfns not in paging state */
- if ( err[i] != -ENOENT )
- {
- i++;
- continue;
- }
-
- paged++;
-
- /* At least one gfn is still in paging state */
- ioctlx.num = 1;
- ioctlx.dom = dom;
- ioctlx.addr = (unsigned long)addr + ((unsigned long)i<<XC_PAGE_SHIFT);
- ioctlx.arr = arr + i;
- ioctlx.err = err + i;
-
- /* Assemble a batch of requests */
- while ( ++i < num )
- {
- if ( err[i] != -ENOENT )
- break;
- ioctlx.num++;
- }
-
- /* Send request and abort on fatal error */
- rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH_V2, &ioctlx);
- if ( rc < 0 && errno != ENOENT )
- goto out;
-
- } while ( i < num );
-
- rc = paged;
-out:
- return rc;
-}
-
-void *xc_map_foreign_bulk(xc_interface *xch,
- uint32_t dom, int prot,
- const xen_pfn_t *arr, int *err, unsigned int num)
-{
- int fd = xch->privcmdfd;
- privcmd_mmapbatch_v2_t ioctlx;
- void *addr;
- unsigned int i;
- int rc;
-
- addr = mmap(NULL, (unsigned long)num << XC_PAGE_SHIFT, prot, MAP_SHARED,
- fd, 0);
- if ( addr == MAP_FAILED )
- {
- PERROR("xc_map_foreign_bulk: mmap failed");
- return NULL;
- }
-
- ioctlx.num = num;
- ioctlx.dom = dom;
- ioctlx.addr = (unsigned long)addr;
- ioctlx.arr = arr;
- ioctlx.err = err;
-
- rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH_V2, &ioctlx);
-
- /* Command was recognized, some gfn in arr are in paging state */
- if ( rc < 0 && errno == ENOENT )
- {
- do {
- usleep(100);
- rc = retry_paged(fd, dom, addr, arr, err, num);
- } while ( rc > 0 );
- }
- /* Command was not recognized, use fall back */
- else if ( rc < 0 && errno == EINVAL && (int)num > 0 )
- {
- /*
- * IOCTL_PRIVCMD_MMAPBATCH_V2 is not supported - fall back to
- * IOCTL_PRIVCMD_MMAPBATCH.
- */
- privcmd_mmapbatch_t ioctlx;
- xen_pfn_t *pfn;
- unsigned int pfn_arr_size = ROUNDUP((num * sizeof(*pfn)),
XC_PAGE_SHIFT);
-
- if ( pfn_arr_size <= XC_PAGE_SIZE )
- pfn = alloca(num * sizeof(*pfn));
- else
- {
- pfn = mmap(NULL, pfn_arr_size, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANON | MAP_POPULATE, -1, 0);
- if ( pfn == MAP_FAILED )
- {
- PERROR("xc_map_foreign_bulk: mmap of pfn array failed");
- (void)munmap(addr, (unsigned long)num << XC_PAGE_SHIFT);
- return NULL;
- }
- }
-
- memcpy(pfn, arr, num * sizeof(*arr));
-
- ioctlx.num = num;
- ioctlx.dom = dom;
- ioctlx.addr = (unsigned long)addr;
- ioctlx.arr = pfn;
-
- rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
-
- rc = rc < 0 ? -errno : 0;
-
- for ( i = 0; i < num; ++i )
- {
- switch ( pfn[i] ^ arr[i] )
- {
- case 0:
- err[i] = rc != -ENOENT ? rc : 0;
- continue;
- default:
- err[i] = -EINVAL;
- continue;
- case PRIVCMD_MMAPBATCH_PAGED_ERROR:
- if ( rc != -ENOENT )
- {
- err[i] = rc ?: -EINVAL;
- continue;
- }
- rc = map_foreign_batch_single(fd, dom, pfn + i,
- (unsigned long)addr + ((unsigned
long)i<<XC_PAGE_SHIFT));
- if ( rc < 0 )
- {
- rc = -errno;
- break;
- }
- rc = -ENOENT;
- continue;
- }
- break;
- }
-
- if ( pfn_arr_size > XC_PAGE_SIZE )
- munmap(pfn, pfn_arr_size);
-
- if ( rc == -ENOENT && i == num )
- rc = 0;
- else if ( rc )
- {
- errno = -rc;
- rc = -1;
- }
- }
-
- if ( rc < 0 )
- {
- int saved_errno = errno;
-
- PERROR("xc_map_foreign_bulk: ioctl failed");
- (void)munmap(addr, (unsigned long)num << XC_PAGE_SHIFT);
- errno = saved_errno;
- return NULL;
- }
-
- return addr;
-}
-
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 4
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
diff --git a/tools/libxc/xc_minios.c b/tools/libxc/xc_minios.c
index 1616c58..7373e54 100644
--- a/tools/libxc/xc_minios.c
+++ b/tools/libxc/xc_minios.c
@@ -40,40 +40,11 @@ void minios_interface_close_fd(int fd);
extern void minios_interface_close_fd(int fd);
-int osdep_privcmd_open(xc_interface *xch)
-{
- int fd = alloc_fd(FTYPE_XC);
-
- if ( fd == -1)
- return -1;
-
- xch->privcmdfd = fd;
- return 0;
-}
-
-int osdep_privcmd_close(xc_interface *xch)
-{
- int fd = xch->privcmdfd;
- return close(fd);
-}
-
void minios_interface_close_fd(int fd)
{
files[fd].type = FTYPE_NONE;
}
-void *xc_map_foreign_bulk(xc_interface *xch,
- uint32_t dom, int prot,
- const xen_pfn_t *arr, int *err, unsigned int num)
-{
- unsigned long pt_prot = 0;
- if (prot & PROT_READ)
- pt_prot = L1_PROT_RO;
- if (prot & PROT_WRITE)
- pt_prot = L1_PROT;
- return map_frames_ex(arr, num, 1, 0, 1, dom, err, pt_prot);
-}
-
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
{
diff --git a/tools/libxc/xc_netbsd.c b/tools/libxc/xc_netbsd.c
index 2654d18..8d6742d 100644
--- a/tools/libxc/xc_netbsd.c
+++ b/tools/libxc/xc_netbsd.c
@@ -23,79 +23,6 @@
#include <unistd.h>
#include <fcntl.h>
#include <malloc.h>
-#include <sys/mman.h>
-
-int osdep_privcmd_open(xc_interface *xch)
-{
- int flags, saved_errno;
- int fd = open("/kern/xen/privcmd", O_RDWR);
-
- if ( fd == -1 )
- {
- PERROR("Could not obtain handle on privileged command interface");
- return -1;
- }
-
- /* Although we return the file handle as the 'xc handle' the API
- does not specify / guarentee that this integer is in fact
- a file handle. Thus we must take responsiblity to ensure
- it doesn't propagate (ie leak) outside the process */
- if ( (flags = fcntl(fd, F_GETFD)) < 0 )
- {
- PERROR("Could not get file handle flags");
- goto error;
- }
- flags |= FD_CLOEXEC;
- if ( fcntl(fd, F_SETFD, flags) < 0 )
- {
- PERROR("Could not set file handle flags");
- goto error;
- }
-
- xch->privcmdfd = fd;
- return 0;
-
- error:
- saved_errno = errno;
- close(fd);
- errno = saved_errno;
- return -1;
-}
-
-int osdep_privcmd_close(xc_interface *xch)
-{
- int fd = xch->privcmdfd;
- return close(fd);
-}
-
-void *osdep_map_foreign_batch(xc_interface *xch,
- uint32_t dom, int prot,
- xen_pfn_t *arr, int num)
-{
- int fd = xch->privcmdfd;
- privcmd_mmapbatch_t ioctlx;
- void *addr;
- addr = mmap(NULL, num*XC_PAGE_SIZE, prot, MAP_ANON | MAP_SHARED, -1, 0);
- if ( addr == MAP_FAILED ) {
- PERROR("osdep_map_foreign_batch: mmap failed");
- return NULL;
- }
-
- ioctlx.num=num;
- ioctlx.dom=dom;
- ioctlx.addr=(unsigned long)addr;
- ioctlx.arr=arr;
- if ( ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
- {
- int saved_errno = errno;
- PERROR("osdep_map_foreign_batch: ioctl failed");
- (void)munmap(addr, num*XC_PAGE_SIZE);
- errno = saved_errno;
- return NULL;
- }
- return addr;
-
-}
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
diff --git a/tools/libxc/xc_private.c b/tools/libxc/xc_private.c
index 00f96ba..94ec444 100644
--- a/tools/libxc/xc_private.c
+++ b/tools/libxc/xc_private.c
@@ -59,11 +59,12 @@ struct xc_interface_core
*xc_interface_open(xentoollog_logger *logger,
if (open_flags & XC_OPENFLAG_DUMMY)
return xch; /* We are done */
- if ( osdep_privcmd_open(xch) < 0 )
- goto err;
-
xch->xcall = xencall_open(xch->error_handler,
open_flags & XC_OPENFLAG_NON_REENTRANT ?
XENCALL_OPENFLAG_NON_REENTRANT : 0U);
+ if ( xch->xcall == NULL )
+ goto err;
+
+ xch->fmem = xenforeignmemory_open(xch->error_handler, 0);
if ( xch->xcall == NULL )
goto err;
@@ -71,7 +72,7 @@ struct xc_interface_core *xc_interface_open(xentoollog_logger
*logger,
return xch;
err:
- osdep_privcmd_close(xch);
+ xencall_close(xch->xcall);
xtl_logger_destroy(xch->error_handler_tofree);
if (xch != &xch_buf) free(xch);
return NULL;
@@ -87,8 +88,8 @@ int xc_interface_close(xc_interface *xch)
rc = xencall_close(xch->xcall);
if (rc) PERROR("Could not close xencall interface");
- rc = osdep_privcmd_close(xch);
- if (rc) PERROR("Could not close hypervisor interface");
+ rc = xenforeignmemory_close(xch->fmem);
+ if (rc) PERROR("Could not close foreign memory interface");
xtl_logger_destroy(xch->dombuild_logger_tofree);
xtl_logger_destroy(xch->error_handler_tofree);
diff --git a/tools/libxc/xc_private.h b/tools/libxc/xc_private.h
index c8c2bdc..b230854 100644
--- a/tools/libxc/xc_private.h
+++ b/tools/libxc/xc_private.h
@@ -30,8 +30,13 @@
#include <sys/ioctl.h>
#include "_paths.h"
+
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
+#define XC_INTERNAL_COMPAT_MAP_FOREIGN_API
#include "xenctrl.h"
+
#include <xencall.h>
+#include <xenforeignmemory.h>
#include <xen/sys/privcmd.h>
@@ -95,11 +100,11 @@ struct xc_interface_core {
FILE *dombuild_logger_file;
const char *currently_progress_reporting;
- /* Privcmd interface */
- int privcmdfd;
-
/* Hypercall interface */
xencall_handle *xcall;
+
+ /* Foreign mappings */
+ xenforeignmemory_handle *fmem;
};
int osdep_privcmd_open(xc_interface *xch);
diff --git a/tools/libxc/xc_solaris.c b/tools/libxc/xc_solaris.c
index e1e126d..c2e87d1 100644
--- a/tools/libxc/xc_solaris.c
+++ b/tools/libxc/xc_solaris.c
@@ -20,81 +20,8 @@
#include "xc_private.h"
-#include <xen/memory.h>
-#include <unistd.h>
-#include <fcntl.h>
#include <malloc.h>
-int osdep_privcmd_open(xc_interface *xch)
-{
- int flags, saved_errno;
- int fd = open("/dev/xen/privcmd", O_RDWR);
-
- if ( fd == -1 )
- {
- PERROR("Could not obtain handle on privileged command interface");
- return -1;
- }
-
- /* Although we return the file handle as the 'xc handle' the API
- does not specify / guarentee that this integer is in fact
- a file handle. Thus we must take responsiblity to ensure
- it doesn't propagate (ie leak) outside the process */
- if ( (flags = fcntl(fd, F_GETFD)) < 0 )
- {
- PERROR("Could not get file handle flags");
- goto error;
- }
- flags |= FD_CLOEXEC;
- if ( fcntl(fd, F_SETFD, flags) < 0 )
- {
- PERROR("Could not set file handle flags");
- goto error;
- }
-
- xch->privcmdfd = fd;
- return 0;
-
- error:
- saved_errno = errno;
- close(fd);
- errno = saved_errno;
- return -1;
-}
-
-int osdep_privcmd_close(xc_interface *xch)
-{
- int fd = xch->privcmdfd;
- return close(fd);
-}
-
-void *osdep_map_foreign_batch(xc_interface *xch,
- uint32_t dom, int prot,
- xen_pfn_t *arr, int num)
-{
- int fd = xch->privcmdfd;
- privcmd_mmapbatch_t ioctlx;
- void *addr;
- addr = mmap(NULL, num*XC_PAGE_SIZE, prot, MAP_SHARED, fd, 0);
- if ( addr == MAP_FAILED )
- return NULL;
-
- ioctlx.num=num;
- ioctlx.dom=dom;
- ioctlx.addr=(unsigned long)addr;
- ioctlx.arr=arr;
- if ( ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
- {
- int saved_errno = errno;
- PERROR("XXXXXXXX");
- (void)munmap(addr, num*XC_PAGE_SIZE);
- errno = saved_errno;
- return NULL;
- }
- return addr;
-
-}
-
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
{
diff --git a/tools/libxc/xc_sr_restore.c b/tools/libxc/xc_sr_restore.c
index bf1ee15..4bbda9d 100644
--- a/tools/libxc/xc_sr_restore.c
+++ b/tools/libxc/xc_sr_restore.c
@@ -315,8 +315,8 @@ static int process_page_data(struct xc_sr_context *ctx,
unsigned count,
if ( nr_pages == 0 )
goto done;
- mapping = guest_page = xc_map_foreign_bulk(
- xch, ctx->domid, PROT_READ | PROT_WRITE,
+ mapping = guest_page = xenforeignmemory_map(xch->fmem,
+ ctx->domid, PROT_READ | PROT_WRITE,
mfns, map_errs, nr_pages);
if ( !mapping )
{
diff --git a/tools/libxc/xc_sr_save.c b/tools/libxc/xc_sr_save.c
index d63b783..2672ad3 100644
--- a/tools/libxc/xc_sr_save.c
+++ b/tools/libxc/xc_sr_save.c
@@ -153,8 +153,8 @@ static int write_batch(struct xc_sr_context *ctx)
if ( nr_pages > 0 )
{
- guest_mapping = xc_map_foreign_bulk(
- xch, ctx->domid, PROT_READ, mfns, errors, nr_pages);
+ guest_mapping = xenforeignmemory_map(xch->fmem,
+ ctx->domid, PROT_READ, mfns, errors, nr_pages);
if ( !guest_mapping )
{
PERROR("Failed to map guest pages");
diff --git a/tools/libxc/xc_vm_event.c b/tools/libxc/xc_vm_event.c
index 4d7e7cc..940efd7 100644
--- a/tools/libxc/xc_vm_event.c
+++ b/tools/libxc/xc_vm_event.c
@@ -74,8 +74,9 @@ void *xc_vm_event_enable(xc_interface *xch, domid_t
domain_id, int param,
ring_pfn = pfn;
mmap_pfn = pfn;
- ring_page = xc_map_foreign_bulk(xch, domain_id, PROT_READ | PROT_WRITE,
- &mmap_pfn, &err, 1);
+ ring_page = xenforeignmemory_map(xch->fmem,
+ domain_id, PROT_READ | PROT_WRITE,
+ &mmap_pfn, &err, 1);
if ( !ring_page )
{
/* Map failed, populate ring page */
@@ -88,8 +89,9 @@ void *xc_vm_event_enable(xc_interface *xch, domid_t
domain_id, int param,
}
mmap_pfn = ring_pfn;
- ring_page = xc_map_foreign_bulk(xch, domain_id, PROT_READ | PROT_WRITE,
- &mmap_pfn, &err, 1);
+ ring_page = xenforeignmemory_map(xch->fmem,
+ domain_id, PROT_READ | PROT_WRITE,
+ &mmap_pfn, &err, 1);
if ( !ring_page )
{
PERROR("Could not map the ring page: %d\n", err);
diff --git a/tools/libxc/xg_private.h b/tools/libxc/xg_private.h
index 1910361..0baf403 100644
--- a/tools/libxc/xg_private.h
+++ b/tools/libxc/xg_private.h
@@ -27,9 +27,8 @@
#include <sys/types.h>
#include <sys/stat.h>
-#include "xenctrl.h"
-#include "xenguest.h"
#include "xc_private.h"
+#include "xenguest.h"
#include <xen/memory.h>
#include <xen/elfnote.h>
diff --git a/tools/libxenforeignmemory/Makefile
b/tools/libxenforeignmemory/Makefile
new file mode 100644
index 0000000..4c84115
--- /dev/null
+++ b/tools/libxenforeignmemory/Makefile
@@ -0,0 +1,67 @@
+XEN_ROOT = $(CURDIR)/../..
+include $(XEN_ROOT)/tools/Rules.mk
+
+MAJOR = 1
+MINOR = 0
+SHLIB_LDFLAGS += -Wl,--version-script=libxenforeignmemory.map
+
+CFLAGS += -Werror -Wmissing-prototypes
+CFLAGS += -I./include $(CFLAGS_xeninclude)
+CFLAGS += $(CFLAGS_libxentoollog)
+
+SRCS-y += core.c
+SRCS-$(CONFIG_Linux) += linux.c
+SRCS-$(CONFIG_FreeBSD) += freebsd.c
+SRCS-$(CONFIG_SunOS) += compat.c solaris.c
+SRCS-$(CONFIG_NetBSD) += compat.c netbsd.c
+SRCS-$(CONFIG_MiniOS) += minios.c
+
+LIB_OBJS := $(patsubst %.c,%.o,$(SRCS-y))
+PIC_OBJS := $(patsubst %.c,%.opic,$(SRCS-y))
+
+LIB := libxenforeignmemory.a
+ifneq ($(nosharedlibs),y)
+LIB += libxenforeignmemory.so
+endif
+
+.PHONY: all
+all: build
+
+.PHONY: build
+build:
+ $(MAKE) libs
+
+.PHONY: libs
+libs: headers.chk $(LIB)
+
+headers.chk: $(wildcard include/*.h)
+
+libxenforeignmemory.a: $(LIB_OBJS)
+ $(AR) rc $@ $^
+
+libxenforeignmemory.so: libxenforeignmemory.so.$(MAJOR)
+ $(SYMLINK_SHLIB) $< $@
+libxenforeignmemory.so.$(MAJOR): libxenforeignmemory.so.$(MAJOR).$(MINOR)
+ $(SYMLINK_SHLIB) $< $@
+
+libxenforeignmemory.so.$(MAJOR).$(MINOR): $(PIC_OBJS) libxenforeignmemory.map
+ $(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG)
-Wl,libxenforeignmemory.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $(PIC_OBJS)
$(LDLIBS_libxentoollog) $(APPEND_LDFLAGS)
+
+.PHONY: install
+install: build
+ $(INSTALL_DIR) $(DESTDIR)$(libdir)
+ $(INSTALL_DIR) $(DESTDIR)$(includedir)
+ $(INSTALL_SHLIB) libxenforeignmemory.so.$(MAJOR).$(MINOR)
$(DESTDIR)$(libdir)
+ $(INSTALL_DATA) libxenforeignmemory.a $(DESTDIR)$(libdir)
+ $(SYMLINK_SHLIB) libxenforeignmemory.so.$(MAJOR).$(MINOR)
$(DESTDIR)$(libdir)/libxenforeignmemory.so.$(MAJOR)
+ $(SYMLINK_SHLIB) libxenforeignmemory.so.$(MAJOR)
$(DESTDIR)$(libdir)/libxenforeignmemory.so
+ $(INSTALL_DATA) include/xenforeignmemory.h $(DESTDIR)$(includedir)
+
+.PHONY: TAGS
+TAGS:
+ etags -t *.c *.h
+
+.PHONY: clean
+clean:
+ rm -rf *.rpm $(LIB) *~ $(DEPS) $(LIB_OBJS) $(PIC_OBJS)
+ rm -f headers.chk
diff --git a/tools/libxenforeignmemory/compat.c
b/tools/libxenforeignmemory/compat.c
new file mode 100644
index 0000000..0d2cf36
--- /dev/null
+++ b/tools/libxenforeignmemory/compat.c
@@ -0,0 +1,72 @@
+/******************************************************************************
+ *
+ * Compatibility functions for mapping foreign domain's memory.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * Split out from xc_foreign_memory.c
+ */
+#if !defined(__NetBSD__) && !defined(__sun__)
+#error Please implement xc_map_foreign_bulk directly for new ports.
+#endif
+
+#include "private.h"
+
+void *xc_map_foreign_bulk(xenforeignmem_handle *fmem,
+ uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err, unsigned int num)
+{
+ xen_pfn_t *pfn;
+ unsigned int i;
+ void *ret;
+
+ if ((int)num <= 0) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ pfn = malloc(num * sizeof(*pfn));
+ if (!pfn) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ memcpy(pfn, arr, num * sizeof(*arr));
+ ret = osdep_map_foreign_batch(fmem, dom, prot, pfn, num);
+
+ if (ret) {
+ for (i = 0; i < num; ++i)
+ switch (pfn[i] ^ arr[i]) {
+ case 0:
+ err[i] = 0;
+ break;
+ default:
+ err[i] = -EINVAL;
+ break;
+ }
+ } else
+ memset(err, 0, num * sizeof(*err));
+
+ free(pfn);
+
+ return ret;
+}
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/core.c b/tools/libxenforeignmemory/core.c
new file mode 100644
index 0000000..efb3e54
--- /dev/null
+++ b/tools/libxenforeignmemory/core.c
@@ -0,0 +1,65 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#include <stdlib.h>
+
+#include "private.h"
+
+xenforeignmemory_handle *xenforeignmemory_open(xentoollog_logger *logger,
+ unsigned open_flags)
+{
+ xenforeignmemory_handle *fmem = malloc(sizeof(*fmem));
+ int rc;
+
+ if (!fmem) return NULL;
+
+ fmem->logger = logger;
+ fmem->logger_tofree = NULL;
+
+ if (!fmem->logger) {
+ fmem->logger = fmem->logger_tofree =
+ (xentoollog_logger*)
+ xtl_createlogger_stdiostream(stderr, XTL_PROGRESS, 0);
+ if (!fmem->logger) goto err;
+ }
+
+ rc = osdep_xenforeignmemory_open(fmem);
+ if ( rc < 0 ) goto err;
+
+ return fmem;
+
+err:
+ osdep_xenforeignmemory_close(fmem);
+ xtl_logger_destroy(fmem->logger_tofree);
+ free(fmem);
+ return NULL;
+}
+
+int xenforeignmemory_close(xenforeignmemory_handle *fmem)
+{
+ int rc;
+
+ rc = osdep_xenforeignmemory_close(fmem);
+ xtl_logger_destroy(fmem->logger_tofree);
+ free(fmem);
+ return rc;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/freebsd.c
b/tools/libxenforeignmemory/freebsd.c
new file mode 100644
index 0000000..b93db51
--- /dev/null
+++ b/tools/libxenforeignmemory/freebsd.c
@@ -0,0 +1,126 @@
+
/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+
+#include "private.h"
+
+#define PRIVCMD_DEV "/dev/xen/privcmd"
+
+int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
+{
+ int flags, saved_errno;
+ int fd = open(PRIVCMD_DEV, O_RDWR);
+
+ if ( fd == -1 )
+ {
+ PERROR("Could not obtain handle on privileged command interface "
+ PRIVCMD_DEV);
+ return -1;
+ }
+
+ /*
+ * Although we return the file handle as the 'xc handle' the API
+ * does not specify / guarentee that this integer is in fact
+ * a file handle. Thus we must take responsiblity to ensure
+ * it doesn't propagate (ie leak) outside the process.
+ */
+ if ( (flags = fcntl(fd, F_GETFD)) < 0 )
+ {
+ PERROR("Could not get file handle flags");
+ goto error;
+ }
+
+ flags |= FD_CLOEXEC;
+
+ if ( fcntl(fd, F_SETFD, flags) < 0 )
+ {
+ PERROR("Could not set file handle flags");
+ goto error;
+ }
+
+ fmem->fd = fd;
+ return 0;
+
+ error:
+ saved_errno = errno;
+ close(fd);
+ errno = saved_errno;
+
+ return -1;
+}
+
+int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
+{
+ int fd = fmem->fd;
+ if ( fd == -1 )
+ return 0;
+ return close(fd);
+}
+
+void *xenforeignmemory_map(xenforeignmemory_handle *fmem,
+ uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err,
+ unsigned int num)
+{
+ int fd = fmem->fd;
+ privcmd_mmapbatch_t ioctlx;
+ void *addr;
+ int rc;
+
+ addr = mmap(NULL, num << PAGE_SHIFT, prot, MAP_SHARED, fd, 0);
+ if ( addr == MAP_FAILED )
+ {
+ PERROR("xc_map_foreign_bulk: mmap failed");
+ return NULL;
+ }
+
+ ioctlx.num = num;
+ ioctlx.dom = dom;
+ ioctlx.addr = (unsigned long)addr;
+ ioctlx.arr = arr;
+ ioctlx.err = err;
+
+ rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
+ if ( rc < 0 )
+ {
+ int saved_errno = errno;
+ PERROR("xc_map_foreign_bulk: ioctl failed");
+ (void)munmap(addr, num << PAGE_SHIFT);
+ errno = saved_errno;
+ return NULL;
+ }
+
+ return addr;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/include/xenforeignmemory.h
b/tools/libxenforeignmemory/include/xenforeignmemory.h
new file mode 100644
index 0000000..3f3d1c7
--- /dev/null
+++ b/tools/libxenforeignmemory/include/xenforeignmemory.h
@@ -0,0 +1,68 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+#ifndef XENFOREIGNMEMORY_H
+#define XENFOREIGNMEMORY_H
+
+/*
+ * This library allows you to map foreign domain memory, subject to
+ * permissions for both the process and the domain in which the
+ * process runs.
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include <xen/xen.h>
+
+/* Callers who don't care don't need to #include <xentoollog.h> */
+typedef struct xentoollog_logger xentoollog_logger;
+
+typedef struct xenforeignmemory_handle xenforeignmemory_handle;
+
+/*
+ * Return a handle onto the hypercall driver. Logs errors.
+ */
+xenforeignmemory_handle *xenforeignmemory_open(xentoollog_logger *logger,
+ unsigned open_flags);
+
+/*
+ * Close a handle previously allocated with xenforeignmemory_open().
+ */
+int xenforeignmemory_close(xenforeignmemory_handle *xmem);
+
+/*
+ * Maps a range within one domain to a local address range. Mappings
+ * should be unmapped with munmap and should follow the same rules as mmap
+ * regarding page alignment.
+ *
+ * prot is as for mmap(2).
+ *
+ * Can partially succeed. When a page cannot be mapped, its respective
+ * field in @err is set to the corresponding errno value.
+ *
+ * Returns NULL if no pages can be mapped.
+ */
+void *xenforeignmemory_map(xenforeignmemory_handle *fmem, uint32_t dom,
+ int prot, const xen_pfn_t *arr, int *err,
+ unsigned int num);
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/libxenforeignmemory.map
b/tools/libxenforeignmemory/libxenforeignmemory.map
new file mode 100644
index 0000000..11f0d2b
--- /dev/null
+++ b/tools/libxenforeignmemory/libxenforeignmemory.map
@@ -0,0 +1,7 @@
+VERS_1.0 {
+ global:
+ xenforeignmemory_open;
+ xenforeignmemory_close;
+ xenforeignmemory_map;
+ local: *; /* Do not expose anything by default */
+};
diff --git a/tools/libxenforeignmemory/linux.c
b/tools/libxenforeignmemory/linux.c
new file mode 100644
index 0000000..6343ebe
--- /dev/null
+++ b/tools/libxenforeignmemory/linux.c
@@ -0,0 +1,284 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * Split out from xc_linus_osdep.c:
+ *
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ */
+
+#include <alloca.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+
+#include "private.h"
+
+#define ROUNDUP(_x,_w) (((unsigned long)(_x)+(1UL<<(_w))-1) & ~((1UL<<(_w))-1))
+
+int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
+{
+ int flags, saved_errno;
+ int fd = open("/proc/xen/privcmd", O_RDWR);
+
+ if ( fd == -1 )
+ {
+ PERROR("Could not obtain handle on privileged command interface");
+ return -1;
+ }
+
+ /* Although we return the file handle as the 'xc handle' the API
+ does not specify / guarentee that this integer is in fact
+ a file handle. Thus we must take responsiblity to ensure
+ it doesn't propagate (ie leak) outside the process */
+ if ( (flags = fcntl(fd, F_GETFD)) < 0 )
+ {
+ PERROR("Could not get file handle flags");
+ goto error;
+ }
+
+ flags |= FD_CLOEXEC;
+
+ if ( fcntl(fd, F_SETFD, flags) < 0 )
+ {
+ PERROR("Could not set file handle flags");
+ goto error;
+ }
+
+ fmem->fd = fd;
+ return 0;
+
+ error:
+ saved_errno = errno;
+ close(fd);
+ errno = saved_errno;
+ return -1;
+}
+
+int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
+{
+ int fd = fmem->fd;
+ if (fd == -1)
+ return 0;
+ return close(fd);
+}
+
+static int map_foreign_batch_single(int fd, uint32_t dom,
+ xen_pfn_t *mfn, unsigned long addr)
+{
+ privcmd_mmapbatch_t ioctlx;
+ int rc;
+
+ ioctlx.num = 1;
+ ioctlx.dom = dom;
+ ioctlx.addr = addr;
+ ioctlx.arr = mfn;
+
+ do
+ {
+ *mfn ^= PRIVCMD_MMAPBATCH_PAGED_ERROR;
+ usleep(100);
+ rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
+ }
+ while ( (rc < 0) && (errno == ENOENT) );
+
+ return rc;
+}
+
+/*
+ * Retry mmap of all paged gfns in batches
+ * retuns < 0 on fatal error
+ * returns 0 if all gfns left paging state
+ * returns > 0 if some gfns are still in paging state
+ *
+ * Walk all gfns and try to assemble blocks of gfns in paging state.
+ * This will keep the request ring full and avoids delays.
+ */
+static int retry_paged(int fd, uint32_t dom, void *addr,
+ const xen_pfn_t *arr, int *err, unsigned int num)
+{
+ privcmd_mmapbatch_v2_t ioctlx;
+ int rc, paged = 0, i = 0;
+
+ do
+ {
+ /* Skip gfns not in paging state */
+ if ( err[i] != -ENOENT )
+ {
+ i++;
+ continue;
+ }
+
+ paged++;
+
+ /* At least one gfn is still in paging state */
+ ioctlx.num = 1;
+ ioctlx.dom = dom;
+ ioctlx.addr = (unsigned long)addr + ((unsigned long)i<<PAGE_SHIFT);
+ ioctlx.arr = arr + i;
+ ioctlx.err = err + i;
+
+ /* Assemble a batch of requests */
+ while ( ++i < num )
+ {
+ if ( err[i] != -ENOENT )
+ break;
+ ioctlx.num++;
+ }
+
+ /* Send request and abort on fatal error */
+ rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH_V2, &ioctlx);
+ if ( rc < 0 && errno != ENOENT )
+ goto out;
+
+ } while ( i < num );
+
+ rc = paged;
+out:
+ return rc;
+}
+
+void *xenforeignmemory_map(xenforeignmemory_handle *fmem,
+ uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err, unsigned int num)
+{
+ int fd = fmem->fd;
+ privcmd_mmapbatch_v2_t ioctlx;
+ void *addr;
+ unsigned int i;
+ int rc;
+
+ addr = mmap(NULL, (unsigned long)num << PAGE_SHIFT, prot, MAP_SHARED,
+ fd, 0);
+ if ( addr == MAP_FAILED )
+ {
+ PERROR("mmap failed");
+ return NULL;
+ }
+
+ ioctlx.num = num;
+ ioctlx.dom = dom;
+ ioctlx.addr = (unsigned long)addr;
+ ioctlx.arr = arr;
+ ioctlx.err = err;
+
+ rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH_V2, &ioctlx);
+
+ /* Command was recognized, some gfn in arr are in paging state */
+ if ( rc < 0 && errno == ENOENT )
+ {
+ do {
+ usleep(100);
+ rc = retry_paged(fd, dom, addr, arr, err, num);
+ } while ( rc > 0 );
+ }
+ /* Command was not recognized, use fall back */
+ else if ( rc < 0 && errno == EINVAL && (int)num > 0 )
+ {
+ /*
+ * IOCTL_PRIVCMD_MMAPBATCH_V2 is not supported - fall back to
+ * IOCTL_PRIVCMD_MMAPBATCH.
+ */
+ privcmd_mmapbatch_t ioctlx;
+ xen_pfn_t *pfn;
+ unsigned int pfn_arr_size = ROUNDUP((num * sizeof(*pfn)), PAGE_SHIFT);
+
+ if ( pfn_arr_size <= PAGE_SIZE )
+ pfn = alloca(num * sizeof(*pfn));
+ else
+ {
+ pfn = mmap(NULL, pfn_arr_size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANON | MAP_POPULATE, -1, 0);
+ if ( pfn == MAP_FAILED )
+ {
+ PERROR("mmap of pfn array failed");
+ (void)munmap(addr, (unsigned long)num << PAGE_SHIFT);
+ return NULL;
+ }
+ }
+
+ memcpy(pfn, arr, num * sizeof(*arr));
+
+ ioctlx.num = num;
+ ioctlx.dom = dom;
+ ioctlx.addr = (unsigned long)addr;
+ ioctlx.arr = pfn;
+
+ rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
+
+ rc = rc < 0 ? -errno : 0;
+
+ for ( i = 0; i < num; ++i )
+ {
+ switch ( pfn[i] ^ arr[i] )
+ {
+ case 0:
+ err[i] = rc != -ENOENT ? rc : 0;
+ continue;
+ default:
+ err[i] = -EINVAL;
+ continue;
+ case PRIVCMD_MMAPBATCH_PAGED_ERROR:
+ if ( rc != -ENOENT )
+ {
+ err[i] = rc ?: -EINVAL;
+ continue;
+ }
+ rc = map_foreign_batch_single(fd, dom, pfn + i,
+ (unsigned long)addr + ((unsigned long)i<<PAGE_SHIFT));
+ if ( rc < 0 )
+ {
+ rc = -errno;
+ break;
+ }
+ rc = -ENOENT;
+ continue;
+ }
+ break;
+ }
+
+ if ( pfn_arr_size > PAGE_SIZE )
+ munmap(pfn, pfn_arr_size);
+
+ if ( rc == -ENOENT && i == num )
+ rc = 0;
+ else if ( rc )
+ {
+ errno = -rc;
+ rc = -1;
+ }
+ }
+
+ if ( rc < 0 )
+ {
+ int saved_errno = errno;
+
+ PERROR("ioctl failed");
+ (void)munmap(addr, (unsigned long)num << PAGE_SHIFT);
+ errno = saved_errno;
+ return NULL;
+ }
+
+ return addr;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/minios.c
b/tools/libxenforeignmemory/minios.c
new file mode 100644
index 0000000..ac7c0ce
--- /dev/null
+++ b/tools/libxenforeignmemory/minios.c
@@ -0,0 +1,59 @@
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * Split out from xc_minios.c
+ *
+ * Copyright 2007-2008 Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>.
+ */
+
+#include <mini-os/types.h>
+#include <mini-os/os.h>
+#include <mini-os/mm.h>
+#include <mini-os/lib.h>
+
+#include <errno.h>
+
+#include <sys/mman.h>
+
+#include "private.h"
+
+int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
+{
+ /* No fd required */
+ return 0;
+}
+
+int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
+{
+ return 0;
+}
+
+void *xenforeignmemory_map(xenforeignmemory_handle *fmem,
+ uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err, unsigned int num)
+{
+ unsigned long pt_prot = 0;
+ if (prot & PROT_READ)
+ pt_prot = L1_PROT_RO;
+ if (prot & PROT_WRITE)
+ pt_prot = L1_PROT;
+ return map_frames_ex(arr, num, 1, 0, 1, dom, err, pt_prot);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/netbsd.c
b/tools/libxenforeignmemory/netbsd.c
new file mode 100644
index 0000000..b2d8b88
--- /dev/null
+++ b/tools/libxenforeignmemory/netbsd.c
@@ -0,0 +1,92 @@
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include "private.h"
+
+int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
+{
+ int flags, saved_errno;
+ int fd = open("/kern/xen/privcmd", O_RDWR);
+
+ if ( fd == -1 )
+ {
+ PERROR("Could not obtain handle on privileged command interface");
+ return -1;
+ }
+
+ /* Although we return the file handle as the 'xc handle' the API
+ does not specify / guarentee that this integer is in fact
+ a file handle. Thus we must take responsiblity to ensure
+ it doesn't propagate (ie leak) outside the process */
+ if ( (flags = fcntl(fd, F_GETFD)) < 0 )
+ {
+ PERROR("Could not get file handle flags");
+ goto error;
+ }
+ flags |= FD_CLOEXEC;
+ if ( fcntl(fd, F_SETFD, flags) < 0 )
+ {
+ PERROR("Could not set file handle flags");
+ goto error;
+ }
+
+ fmem->fd = fd;
+ return 0;
+
+ error:
+ saved_errno = errno;
+ close(fd);
+ errno = saved_errno;
+ return -1;
+}
+
+int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
+{
+ int fd = fmem->fd;
+ return close(fd);
+}
+
+void *compat_mapforeign_batch(xenforeignmem_handle *fmem, uint32_t dom,
+ int prot, xen_pfn_t *arr, int num)
+{
+ int fd = fmem->fd;
+ privcmd_mmapbatch_t ioctlx;
+ void *addr;
+ addr = mmap(NULL, num*XC_PAGE_SIZE, prot, MAP_ANON | MAP_SHARED, -1, 0);
+ if ( addr == MAP_FAILED ) {
+ PERROR("osdep_map_foreign_batch: mmap failed");
+ return NULL;
+ }
+
+ ioctlx.num=num;
+ ioctlx.dom=dom;
+ ioctlx.addr=(unsigned long)addr;
+ ioctlx.arr=arr;
+ if ( ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
+ {
+ int saved_errno = errno;
+ PERROR("osdep_map_foreign_batch: ioctl failed");
+ (void)munmap(addr, num*XC_PAGE_SIZE);
+ errno = saved_errno;
+ return NULL;
+ }
+ return addr;
+
+}
diff --git a/tools/libxenforeignmemory/private.h
b/tools/libxenforeignmemory/private.h
new file mode 100644
index 0000000..54dd7d5
--- /dev/null
+++ b/tools/libxenforeignmemory/private.h
@@ -0,0 +1,47 @@
+#ifndef XENFOREIGNMEMORY_PRIVATE_H
+#define XENFOREIGNMEMORY_PRIVATE_H
+
+#include <xentoollog.h>
+
+#include <xenforeignmemory.h>
+
+#include <xen/xen.h>
+#include <xen/sys/privcmd.h>
+
+#ifndef PAGE_SHIFT /* Mini-os, Yukk */
+#define PAGE_SHIFT 12
+#endif
+#ifndef __MINIOS__ /* Yukk */
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+#endif
+
+struct xenforeignmemory_handle {
+ xentoollog_logger *logger, *logger_tofree;
+ unsigned flags;
+ int fd;
+};
+
+int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem);
+int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem);
+
+#if defined(__NetBSD__) || defined(__sun__)
+/* Strictly compat for those two only only */
+void *compat_mapforeign_batch(xenforeignmem_handle *fmem, uint32_t dom,
+ int prot, xen_pfn_t *arr, int num);
+#endif
+
+#define PERROR(_f...) \
+ xtl_log(fmem->logger, XTL_ERROR, errno, "xenforeignmemory", _f)
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/tools/libxenforeignmemory/solaris.c
b/tools/libxenforeignmemory/solaris.c
new file mode 100644
index 0000000..035484b
--- /dev/null
+++ b/tools/libxenforeignmemory/solaris.c
@@ -0,0 +1,95 @@
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
+ */
+
+#include "xc_private.h"
+
+#include <xen/memory.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <malloc.h>
+
+int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
+{
+ int flags, saved_errno;
+ int fd = open("/dev/xen/privcmd", O_RDWR);
+
+ if ( fd == -1 )
+ {
+ PERROR("Could not obtain handle on privileged command interface");
+ return -1;
+ }
+
+ /* Although we return the file handle as the 'xc handle' the API
+ does not specify / guarentee that this integer is in fact
+ a file handle. Thus we must take responsiblity to ensure
+ it doesn't propagate (ie leak) outside the process */
+ if ( (flags = fcntl(fd, F_GETFD)) < 0 )
+ {
+ PERROR("Could not get file handle flags");
+ goto error;
+ }
+ flags |= FD_CLOEXEC;
+ if ( fcntl(fd, F_SETFD, flags) < 0 )
+ {
+ PERROR("Could not set file handle flags");
+ goto error;
+ }
+
+ fmem->fd = fd;
+ return 0;
+
+ error:
+ saved_errno = errno;
+ close(fd);
+ errno = saved_errno;
+ return -1;
+}
+
+int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
+{
+ int fd = fmem->fd;
+ return close(fd);
+}
+
+void *compat_mapforeign_batch(xenforeignmem_handle *fmem, uint32_t dom,
+ int prot, xen_pfn_t *arr, int num)
+{
+ int fd = fmem->fd;
+ privcmd_mmapbatch_t ioctlx;
+ void *addr;
+ addr = mmap(NULL, num*XC_PAGE_SIZE, prot, MAP_SHARED, fd, 0);
+ if ( addr == MAP_FAILED )
+ return NULL;
+
+ ioctlx.num=num;
+ ioctlx.dom=dom;
+ ioctlx.addr=(unsigned long)addr;
+ ioctlx.arr=arr;
+ if ( ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
+ {
+ int saved_errno = errno;
+ PERROR("XXXXXXXX");
+ (void)munmap(addr, num*XC_PAGE_SIZE);
+ errno = saved_errno;
+ return NULL;
+ }
+ return addr;
+
+}
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 4b59cad..101acb0 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -50,6 +50,7 @@
#include <xenevtchn.h>
#include <xenstore.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xenguest.h>
diff --git a/tools/misc/xen-mfndump.c b/tools/misc/xen-mfndump.c
index ceeeaa9..1b22ad7 100644
--- a/tools/misc/xen-mfndump.c
+++ b/tools/misc/xen-mfndump.c
@@ -1,3 +1,4 @@
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xc_private.h>
#include <xc_core.h>
diff --git a/tools/ocaml/libs/xc/xenctrl_stubs.c
b/tools/ocaml/libs/xc/xenctrl_stubs.c
index 9a201ee..1f5aba7 100644
--- a/tools/ocaml/libs/xc/xenctrl_stubs.c
+++ b/tools/ocaml/libs/xc/xenctrl_stubs.c
@@ -29,6 +29,7 @@
#include <stdint.h>
#include <string.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include "mmap_stubs.h"
diff --git a/tools/python/xen/lowlevel/xc/xc.c
b/tools/python/xen/lowlevel/xc/xc.c
index ee3e1d0..6750ee1 100644
--- a/tools/python/xen/lowlevel/xc/xc.c
+++ b/tools/python/xen/lowlevel/xc/xc.c
@@ -5,6 +5,7 @@
*/
#include <Python.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xenguest.h>
#include <zlib.h>
@@ -17,7 +18,6 @@
#include <netdb.h>
#include <arpa/inet.h>
-#include "xenctrl.h"
#include <xen/elfnote.h>
#include <xen/tmem.h>
#include "xc_dom.h"
diff --git a/tools/xenmon/xenbaked.c b/tools/xenmon/xenbaked.c
index 9e2a49b..ad77286 100644
--- a/tools/xenmon/xenbaked.c
+++ b/tools/xenmon/xenbaked.c
@@ -39,6 +39,7 @@
#include <errno.h>
#include <signal.h>
#include <xenevtchn.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xen/xen.h>
#include <string.h>
diff --git a/tools/xenpaging/pagein.c b/tools/xenpaging/pagein.c
index 18699ec..0ea8680 100644
--- a/tools/xenpaging/pagein.c
+++ b/tools/xenpaging/pagein.c
@@ -1,6 +1,5 @@
/* Trigger a page-in in a separate thread-of-execution to avoid deadlock */
#include <pthread.h>
-#include <xc_private.h>
#include "xenpaging.h"
struct page_in_args {
diff --git a/tools/xenpaging/xenpaging.c b/tools/xenpaging/xenpaging.c
index a819a5b..8a05e98 100644
--- a/tools/xenpaging/xenpaging.c
+++ b/tools/xenpaging/xenpaging.c
@@ -28,7 +28,6 @@
#include <signal.h>
#include <unistd.h>
#include <poll.h>
-#include <xc_private.h>
#include <xenstore.h>
#include <getopt.h>
diff --git a/tools/xenpaging/xenpaging.h b/tools/xenpaging/xenpaging.h
index 6c12030..3cdd1a8 100644
--- a/tools/xenpaging/xenpaging.h
+++ b/tools/xenpaging/xenpaging.h
@@ -26,6 +26,8 @@
#include <xenevtchn.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
+#include <xenctrl.h>
#include <xc_private.h>
#include <xen/event_channel.h>
#include <xen/vm_event.h>
diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
index 7f1e489..120fd64 100644
--- a/tools/xenstore/xenstored_core.c
+++ b/tools/xenstore/xenstored_core.c
@@ -51,7 +51,6 @@
#include "xenstored_watch.h"
#include "xenstored_transaction.h"
#include "xenstored_domain.h"
-#include "xenctrl.h"
#include "tdb.h"
#include "hashtable.h"
diff --git a/tools/xenstore/xenstored_core.h b/tools/xenstore/xenstored_core.h
index 2b01076..e0fa843 100644
--- a/tools/xenstore/xenstored_core.h
+++ b/tools/xenstore/xenstored_core.h
@@ -20,6 +20,7 @@
#ifndef _XENSTORED_CORE_H
#define _XENSTORED_CORE_H
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xengnttab.h>
diff --git a/tools/xentrace/xenctx.c b/tools/xentrace/xenctx.c
index 4ed120a..e647179 100644
--- a/tools/xentrace/xenctx.c
+++ b/tools/xentrace/xenctx.c
@@ -25,7 +25,8 @@
#include <getopt.h>
#include <limits.h>
-#include "xenctrl.h"
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
+#include <xenctrl.h>
#include <xen/foreign/x86_32.h>
#include <xen/foreign/x86_64.h>
#include <xen/hvm/save.h>
diff --git a/tools/xentrace/xentrace.c b/tools/xentrace/xentrace.c
index f66a77c..28c2b3c 100644
--- a/tools/xentrace/xentrace.c
+++ b/tools/xentrace/xentrace.c
@@ -30,6 +30,7 @@
#include <xen/xen.h>
#include <xen/trace.h>
+#define XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenevtchn.h>
#include <xenctrl.h>
--
2.1.4
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