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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-API] [PATCH 4 of 4] REBASE-4.1: xiu: add xenctrlosdep backend
# HG changeset patch
# User root@xxxxxxxxxxxxxxxxxxxxx
# Date 1294651017 18000
# Node ID e7c8eaefec098d4b94a8d5bbad1528a795681a40
# Parent bdd3258405c615d0fa81c6140d1340a1672247a6
REBASE-4.1: xiu: add xenctrlosdep backend.
This interface was recently added to the upstream libxenctrl to allow
interception of the calls to the hypervisor.
Convert eventchn/eventchn_injection.c and xc/xc_lib_injection.c into an XIU
backend for this interface.
(depends on global rebase to Xen 4.1)
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
diff -r bdd3258405c6 -r e7c8eaefec09 Makefile.in
--- a/Makefile.in Mon Jan 10 04:16:55 2011 -0500
+++ b/Makefile.in Mon Jan 10 04:16:57 2011 -0500
@@ -56,6 +56,7 @@ endif
$(MAKE) -C cpuid
$(MAKE) -C vhd
$(MAKE) -C tapctl
+ $(MAKE) -C fake
endif
install:
@@ -104,6 +105,7 @@ endif
$(MAKE) -C cpuid install
$(MAKE) -C vhd install
$(MAKE) -C tapctl install
+ $(MAKE) -C fake install
endif
uninstall:
@@ -152,6 +154,7 @@ endif
$(MAKE) -C cpuid uninstall
$(MAKE) -C vhd uninstall
$(MAKE) -C tapctl uninstall
+ $(MAKE) -C fake uninstall
endif
bins:
@@ -211,6 +214,7 @@ endif
$(MAKE) -C cpuid doc
$(MAKE) -C vhd doc
$(MAKE) -C tapctl doc
+ $(MAKE) -C fake doc
$(MAKE) -C xen-utils doc
.PHONY: clean
@@ -239,6 +243,7 @@ endif
$(MAKE) -C xen-utils clean
cleanxen:
+ $(MAKE) -C fake clean
ifeq ($(WITH_XEN_SYSTEM_BINDINGS),0)
$(MAKE) -C mmap clean
endif
diff -r bdd3258405c6 -r e7c8eaefec09 fake/Makefile
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fake/Makefile Mon Jan 10 04:16:57 2011 -0500
@@ -0,0 +1,27 @@
+CC := gcc
+
+CFLAGS := -O1
+CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
-fno-strict-aliasing -std=gnu99
+CFLAGS += -mno-tls-direct-seg-refs
+CFLAGS += -Wall -Wstrict-prototypes -Wno-unused-value
-Wdeclaration-after-statement -Werror -Wmissing-prototypes
+CFLAGS += -D__XEN_TOOLS__ -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_GNU_SOURCE
+
+all: xenctrl_osdep_xiu.so
+ @:
+
+xeninterrcept_xiu.o: xenctrl_osdep_xiu.c
+ $(CC) $(CFLAGS) -c -o xenctrl_osdep_xiu.o xenctrl_osdep_xiu.c
+
+xenctrl_osdep_xiu.so: xenctrl_osdep_xiu.o
+ $(CC) $(CFLAGS) -shared -o xenctrl_osdep_xiu.so xenctrl_osdep_xiu.o
-lxenctrl
+
+install: xenctrl_osdep_xiu.so
+ mkdir -p $$(DESTDIR)/opt/xensource/lib/xenctrl/
+ cp xenctrl_osdep_xiu.so
$(DESTDIR)/opt/xensource/lib/xenctrl/osdep_xiu.so
+
+clean:
+ rm -f xeninterrcept_xiu.o
+ rm -f xenctrl_osdep_xiu.so
+
+uninstall:
+ rm -f $(DESTDIR)/opt/xensource/lib/xenctrl/osdep_xiu.so
diff -r bdd3258405c6 -r e7c8eaefec09 fake/xenctrl_osdep_xiu.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/fake/xenctrl_osdep_xiu.c Mon Jan 10 04:16:57 2011 -0500
@@ -0,0 +1,609 @@
+/*
+ * Copyright (C) 2010 Citrix Systems Inc.
+ *
+ * This program 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 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program 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 <stdlib.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <xenctrl.h>
+#include <xenctrlosdep.h>
+
+#include "marshall.h"
+
+#define IPRINTF(_x, _f, _a...) xc_osdep_log(_x,XTL_INFO,0, _f , ## _a)
+
+#define ERROR(_x, _m, _a...) xc_osdep_log(_x,XTL_ERROR,XC_INTERNAL_ERROR,_m ,
## _a )
+#define PERROR(_x, _m, _a...) xc_osdep_log(_x,XTL_ERROR,XC_INTERNAL_ERROR,_m \
+ " (%d = %s)", ## _a , errno, xc_strerror(xch, errno))
+
+#define HYPCALLcmd "hypcall"
+
+static xc_osdep_handle xiu_privcmd_open(xc_interface *xch)
+{
+ struct sockaddr_un remote;
+ char *s;
+ int fd, len;
+
+ s = getenv("XIU");
+ if (!s)
+ {
+ ERROR(xch, "XIU not found. Set $XIU");
+ return XC_OSDEP_OPEN_ERROR;
+ }
+
+ snprintf(remote.sun_path, 256, "%s-xc", s);
+ remote.sun_family = AF_UNIX;
+ len = strlen(remote.sun_path) + sizeof(remote.sun_family);
+
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd == -1)
+ {
+ ERROR(xch, "XIU: Cannot open Unix domain socket");
+ return XC_OSDEP_OPEN_ERROR;
+ }
+
+ if (connect(fd, (struct sockaddr *)&remote, len) != 0)
+ {
+ ERROR(xch, "XIU: Cannot connect to Unix domain socket %s.",
remote.sun_path);
+ return XC_OSDEP_OPEN_ERROR;
+ }
+
+ return (xc_osdep_handle)fd;
+}
+
+static int xiu_privcmd_close(xc_interface *xch, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
+}
+
+#define DOMAINHANDLE
"%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x-%02x"
+
+static int fake_xen_domctl(int fd, struct xen_domctl *domctl)
+{
+ #define DOMCTLcmd "domctl"
+ switch (domctl->cmd) {
+ case XEN_DOMCTL_pausedomain:
+ case XEN_DOMCTL_unpausedomain:
+ case XEN_DOMCTL_resumedomain:
+ case XEN_DOMCTL_destroydomain:
+ marshall_command(fd, "%s,%d,%d\n", DOMCTLcmd, domctl->cmd,
domctl->domain);
+ return unmarshall_return(fd);
+ case XEN_DOMCTL_createdomain: /* W ssidref */
+ marshall_command(fd, "%s,%d,%d,%d," DOMAINHANDLE "\n", DOMCTLcmd,
+ domctl->cmd,
+
(domctl->u.createdomain.flags|XEN_DOMCTL_CDF_hvm_guest)?1:0,
+ (domctl->u.createdomain.flags|XEN_DOMCTL_CDF_hap)?1:0,
+ domctl->u.createdomain.handle[0],
+ domctl->u.createdomain.handle[1],
+ domctl->u.createdomain.handle[2],
+ domctl->u.createdomain.handle[3],
+ domctl->u.createdomain.handle[4],
+ domctl->u.createdomain.handle[5],
+ domctl->u.createdomain.handle[6],
+ domctl->u.createdomain.handle[7],
+ domctl->u.createdomain.handle[8],
+ domctl->u.createdomain.handle[9],
+ domctl->u.createdomain.handle[10],
+ domctl->u.createdomain.handle[11],
+ domctl->u.createdomain.handle[12],
+ domctl->u.createdomain.handle[13],
+ domctl->u.createdomain.handle[14],
+ domctl->u.createdomain.handle[15]);
+ domctl->domain = unmarshall_int(fd);
+ return unmarshall_return(fd);
+ case XEN_DOMCTL_max_mem: /* W domid, maxmem */
+ marshall_command(fd, "%s,%d,%d,%d\n", DOMCTLcmd,
+ domctl->cmd,
+ domctl->domain, domctl->u.max_mem.max_memkb);
+ return unmarshall_return(fd);
+ case XEN_DOMCTL_settimeoffset: /* W domid, time */
+ marshall_command(fd, "%s,%d,%d,%d\n", DOMCTLcmd,
+ domctl->cmd,
+ domctl->domain,
+ domctl->u.settimeoffset.time_offset_seconds);
+ return unmarshall_return(fd);
+#ifdef XEN_DOMCTL_setvmxassist
+ case XEN_DOMCTL_setvmxassist: /* W domid, use_vmxassist */
+ marshall_command(fd, "%s,%d,%d,%d\n", DOMCTLcmd,
+ domctl->cmd,
+ domctl->domain,
+ domctl->u.setvmxassist.use_vmxassist);
+ return unmarshall_return(fd);
+#endif
+ case XEN_DOMCTL_max_vcpus: /* W domid, max */
+ marshall_command(fd, "%s,%d,%d,%d\n", DOMCTLcmd,
+ domctl->cmd,
+ domctl->domain,
+ domctl->u.max_vcpus.max);
+ return unmarshall_return(fd);
+ case XEN_DOMCTL_setdomainhandle: { /* domid, fd */
+ marshall_command(fd, "%s,%d,%d," DOMAINHANDLE "\n", DOMCTLcmd,
+ domctl->cmd,
+ domctl->domain,
+ domctl->u.setdomainhandle.handle[0],
+ domctl->u.setdomainhandle.handle[1],
+ domctl->u.setdomainhandle.handle[2],
+ domctl->u.setdomainhandle.handle[3],
+ domctl->u.setdomainhandle.handle[4],
+ domctl->u.setdomainhandle.handle[5],
+ domctl->u.setdomainhandle.handle[6],
+ domctl->u.setdomainhandle.handle[7],
+ domctl->u.setdomainhandle.handle[8],
+ domctl->u.setdomainhandle.handle[9],
+ domctl->u.setdomainhandle.handle[10],
+ domctl->u.setdomainhandle.handle[11],
+ domctl->u.setdomainhandle.handle[12],
+ domctl->u.setdomainhandle.handle[13],
+ domctl->u.setdomainhandle.handle[14],
+ domctl->u.setdomainhandle.handle[15]);
+ return unmarshall_return(fd);
+ }
+ /* just returning success : might need init */
+ case XEN_DOMCTL_getvcpucontext:
+ case XEN_DOMCTL_getvcpuaffinity:
+ return 0;
+ /* just returning success */
+ case XEN_DOMCTL_scheduler_op:
+ return 0;
+ case XEN_DOMCTL_shadow_op:
+ /* Only fd set/get allocation at the moment */
+ marshall_command(fd, "%s,%d,%d,%d,%d,%d\n", DOMCTLcmd,
+ domctl->cmd,
+ domctl->domain,
+ domctl->u.shadow_op.op,
+ domctl->u.shadow_op.mode,
+ domctl->u.shadow_op.mb);
+ if(domctl->u.shadow_op.op == XEN_DOMCTL_SHADOW_OP_GET_ALLOCATION)
+ domctl->u.shadow_op.mb = unmarshall_int(fd);
+
+ return unmarshall_return(fd);
+
+ /* just return success */
+ case XEN_DOMCTL_ioport_permission:
+ case XEN_DOMCTL_irq_permission:
+ case XEN_DOMCTL_iomem_permission:
+ case XEN_DOMCTL_setvcpuaffinity:
+ case XEN_DOMCTL_setvcpucontext:
+ case XEN_DOMCTL_getmemlist:
+ case XEN_DOMCTL_getvcpuinfo:
+#ifdef XEN_DOMCTL_get_runstate_info
+ case XEN_DOMCTL_get_runstate_info:
+#endif
+ case XEN_DOMCTL_set_machine_address_size:
+#ifdef XEN_DOMCTL_suppress_spurious_page_faults
+ case XEN_DOMCTL_suppress_spurious_page_faults:
+#endif
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int fake_xen_sysctl(int fd, struct xen_sysctl *sysctl)
+{
+ #define SYSCTLcmd "sysctl"
+ switch (sysctl->cmd) {
+ case XEN_SYSCTL_getdomaininfolist: {
+ xc_domaininfo_t *info; int num, i;
+
+ get_xen_guest_handle(info, sysctl->u.getdomaininfolist.buffer);
+
+ marshall_command(fd, "%s,%d,%d,%d\n", SYSCTLcmd, sysctl->cmd,
+ sysctl->u.getdomaininfolist.first_domain,
+ sysctl->u.getdomaininfolist.max_domains);
+ num = unmarshall_int(fd);
+ for (i = 0; i < num; i++) {
+ int uuid[16], j, flags;
+ char **ret;
+
+ ret = unmarshall_multiple(fd);
+ if (!ret)
+ return -EBADF;
+
+ /* domid,uuid,flags */
+ info->domain = atoi(ret[0]);
+
+ parse_uuid(ret[1], uuid);
+ for (j = 0; j < 16; j++)
+ info->handle[j] = uuid[j] & 0xff;
+
+ flags = atoi(ret[2]);
+ info->flags = 0;
+ if (flags & 0x1) info->flags |= XEN_DOMINF_dying;
+ if (flags & 0x2) info->flags |= XEN_DOMINF_shutdown;
+ if (flags & 0x4) info->flags |= XEN_DOMINF_paused;
+ if (flags & 0x8) info->flags |= XEN_DOMINF_blocked;
+ if (flags & 0x10) info->flags |= XEN_DOMINF_running;
+ if (flags & 0x20) info->flags |= XEN_DOMINF_hvm_guest;
+ info->flags |= ((flags >> 8) & 0xff) << XEN_DOMINF_shutdownshift;
+
+ info->nr_online_vcpus = atoi(ret[3]);
+ info->max_vcpu_id = atoi(ret[4]);
+
+ info->tot_pages = atoi(ret[5]);
+ info->max_pages = atoi(ret[6]);
+ info->shared_info_frame = atoi(ret[7]);
+ info->cpu_time = atoi(ret[8]);
+ info->ssidref = atoi(ret[9]);
+
+ string_split_free(ret);
+ info++;
+
+ }
+ sysctl->u.getdomaininfolist.num_domains = num;
+ return unmarshall_return(fd);
+ }
+ case XEN_SYSCTL_readconsole:
+ case XEN_SYSCTL_debug_keys:
+ return 0;
+ case XEN_SYSCTL_physinfo: {
+ char **ret;
+ int sockets_per_node;
+
+ marshall_command(fd, "%s,%d\n", SYSCTLcmd, sysctl->cmd);
+ ret = unmarshall_multiple(fd);
+ if (!ret) return -EBADF;
+
+ sockets_per_node = atoi(ret[2]);
+
+ sysctl->u.physinfo.threads_per_core = atoi(ret[0]);
+ sysctl->u.physinfo.cores_per_socket = atoi(ret[1]);
+#if XEN_SYSCTL_INTERFACE_VERSION < 6
+ sysctl->u.physinfo.sockets_per_node = sockets_per_node;
+#endif
+ sysctl->u.physinfo.nr_nodes = atoi(ret[3]);
+#if XEN_SYSCTL_INTERFACE_VERSION >= 6
+ sysctl->u.physinfo.nr_cpus =
+ sysctl->u.physinfo.threads_per_core *
+ sysctl->u.physinfo.cores_per_socket *
+ sockets_per_node *
+ sysctl->u.physinfo.nr_nodes;
+#endif
+ sysctl->u.physinfo.cpu_khz = atoi(ret[4]);
+ sysctl->u.physinfo.total_pages = atoi(ret[5]);
+ sysctl->u.physinfo.free_pages = atoi(ret[6]);
+ sysctl->u.physinfo.scrub_pages = 0;
+
+ string_split_free(ret);
+ return unmarshall_return(fd);
+ }
+ case XEN_SYSCTL_getcpuinfo: {
+ xen_sysctl_cpuinfo_t *info;
+ int num, i;
+
+ get_xen_guest_handle(info, sysctl->u.getcpuinfo.info);
+ marshall_command(fd, "%s,%d,%d\n", SYSCTLcmd, sysctl->cmd,
sysctl->u.getcpuinfo.max_cpus);
+ num = unmarshall_int(fd);
+ for (i = 0; i < num; i++) {
+ info[i].idletime = unmarshall_int64(fd);
+ }
+ return unmarshall_return(fd);
+ }
+ case XEN_SYSCTL_sched_id:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fake_xen_eventchn(int fd, unsigned long cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case EVTCHNOP_alloc_unbound:
+ case EVTCHNOP_reset:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fake_xen_memoryop(int fd, unsigned long cmd, struct
xen_memory_reservation *reservation)
+{
+ switch (cmd) {
+ case XENMEM_set_memory_map:
+ case XENMEM_increase_reservation:
+ case XENMEM_decrease_reservation:
+ case XENMEM_populate_physmap:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fake_xen_hvmop(int fd, unsigned long cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case HVMOP_get_param:
+ return 0;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fake_xen_schedop(int fd, unsigned long cmd, sched_remote_shutdown_t
*arg)
+{
+ switch (cmd) {
+ case SCHEDOP_remote_shutdown:
+ marshall_command(fd, "%s,%d,%d,%d\n", HYPCALLcmd,
+ 1,
+ arg->domain_id,
+ arg->reason);
+ return unmarshall_return(fd);
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int fake_xen_versionop(int fd, unsigned long cmd, void * arg)
+{
+ switch (cmd) {
+ case XENVER_extraversion:
+ memset(arg, '\0', sizeof(xen_extraversion_t));
+ memcpy(arg, ".0", 2);
+ return 0;
+ case XENVER_compile_info:
+ memset(arg, '\0', sizeof(xen_compile_info_t));
+ return 0;
+ case XENVER_capabilities:
+ memset(arg, '\0', sizeof(xen_capabilities_info_t));
+ #define CAPA "xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32
hvm-3.0-x86_32p hvm-3.0-x86_64"
+ memcpy(arg, CAPA, strlen(CAPA));
+ #undef CAPA
+ return 0;
+ case XENVER_changeset:
+ memset(arg, '\0', sizeof(xen_changeset_info_t));
+ return 0;
+ case XENVER_platform_parameters:
+ memset(arg, '\0', sizeof(xen_platform_parameters_t));
+ return 0;
+ case XENVER_version:
+ return (((3 << 16) & 0xffff0000) + (1 & 0xffff)); /* 3.1 */
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int xiu_privcmd_hypercall(xc_interface *xch, xc_osdep_handle h,
privcmd_hypercall_t *hypercall)
+{
+ int fd = (int)h;
+ if (!hypercall) return -EINVAL;
+ switch (hypercall->op) {
+ case __HYPERVISOR_domctl:
+ return fake_xen_domctl(fd, (struct xen_domctl *)
(intptr_t)hypercall->arg[0]);
+ case __HYPERVISOR_sysctl:
+ return fake_xen_sysctl(fd, (struct xen_sysctl *)
(intptr_t)hypercall->arg[0]);
+ case __HYPERVISOR_event_channel_op:
+ return fake_xen_eventchn(fd, hypercall->arg[0], hypercall->arg[1]);
+ case __HYPERVISOR_memory_op:
+ return fake_xen_memoryop(fd, hypercall->arg[0], (struct
xen_memory_reservation *) (intptr_t)hypercall->arg[2]);
+ case __HYPERVISOR_hvm_op:
+ return fake_xen_hvmop(fd, hypercall->arg[0], hypercall->arg[2]);
+ case __HYPERVISOR_sched_op:
+ return fake_xen_schedop(fd, hypercall->arg[0],
(sched_remote_shutdown_t *) (intptr_t)hypercall->arg[1]);
+ case __HYPERVISOR_xen_version:
+ return fake_xen_versionop(fd, hypercall->arg[0], (void *)
(intptr_t)hypercall->arg[1]);
+ default:
+ return -EINVAL;
+ }
+}
+
+static void *xiu_privcmd_map_foreign_batch(xc_interface *xch, xc_osdep_handle
h, uint32_t dom, int prot,
+ xen_pfn_t *arr, int num)
+{
+ return mmap(NULL, num << XC_PAGE_SHIFT, prot, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0);
+}
+
+static void *xiu_privcmd_map_foreign_bulk(xc_interface *xch, xc_osdep_handle
h, uint32_t dom, int prot,
+ const xen_pfn_t *arr, int *err, unsigned
int num)
+{
+ return mmap(NULL, (unsigned long)num << XC_PAGE_SHIFT, prot,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+}
+
+static void *xiu_privcmd_map_foreign_range(xc_interface *xch, xc_osdep_handle
h, uint32_t dom, int size, int prot,
+ unsigned long mfn)
+{
+ int num = (size + XC_PAGE_SIZE - 1) >> XC_PAGE_SHIFT;
+ return mmap(NULL, num, prot, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+}
+
+static void *xiu_privcmd_map_foreign_ranges(xc_interface *xch, xc_osdep_handle
h, uint32_t dom, size_t size, int prot,
+ size_t chunksize, privcmd_mmap_entry_t
entries[],
+ int nentries)
+{
+ int num_per_entry;
+ int num;
+
+ num_per_entry = chunksize >> XC_PAGE_SHIFT;
+ num = num_per_entry * nentries;
+ return mmap(NULL, num, prot, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+}
+
+static struct xc_osdep_ops xiu_privcmd_ops =
+{
+ .open = &xiu_privcmd_open,
+ .close = &xiu_privcmd_close,
+ .u.privcmd = {
+ .hypercall = &xiu_privcmd_hypercall,
+
+ .map_foreign_batch = &xiu_privcmd_map_foreign_batch,
+ .map_foreign_bulk = &xiu_privcmd_map_foreign_bulk,
+ .map_foreign_range = &xiu_privcmd_map_foreign_range,
+ .map_foreign_ranges = &xiu_privcmd_map_foreign_ranges,
+ }
+};
+
+static xc_osdep_handle xiu_evtchn_open(xc_evtchn *xce)
+{
+ struct sockaddr_un remote;
+ char *s;
+ int fd, len;
+
+ s = getenv("XIU");
+ if (!s)
+ {
+ ERROR(xce, "XIU not found. Set $XIU");
+ return XC_OSDEP_OPEN_ERROR;
+ }
+ snprintf(remote.sun_path, 256, "%s-ev", s);
+ remote.sun_family = AF_UNIX;
+ len = strlen(remote.sun_path) + sizeof(remote.sun_family);
+
+ fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (fd == -1)
+ {
+ ERROR(xce, "XIU: Cannot open Unix domain socket");
+ return XC_OSDEP_OPEN_ERROR;
+ }
+
+ if (connect(fd, (struct sockaddr *)&remote, len) != 0)
+ {
+ ERROR(xce, "XIU: Cannot connect to Unix domain socket %s.",
remote.sun_path);
+ return XC_OSDEP_OPEN_ERROR;
+ }
+
+ return (xc_osdep_handle)fd;
+}
+
+static int xiu_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
+}
+
+static int xiu_evtchn_fd(xc_evtchn *xce, xc_osdep_handle h)
+{
+ return (int)h;
+}
+
+static int xiu_evtchn_notify(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
port)
+{
+ int fd = (int)h;
+ marshall_command(fd, "ioctl,notify,%d\n", port);
+ return unmarshall_return(fd);
+}
+
+static evtchn_port_or_error_t
+xiu_evtchn_bind_unbound_port(xc_evtchn *xce, xc_osdep_handle h, int domid)
+{
+ return -EINVAL;
+}
+
+static evtchn_port_or_error_t
+xiu_evtchn_bind_interdomain(xc_evtchn *xce, xc_osdep_handle h, int domid,
+ evtchn_port_t remote_port)
+{
+ int fd = (int)h;
+ marshall_command(fd, "ioctl,bind_interdomain,%d,%d\n", domid, remote_port);
+ return unmarshall_return(fd);
+}
+
+static evtchn_port_or_error_t
+xiu_evtchn_bind_virq(xc_evtchn *xce, xc_osdep_handle h, unsigned int virq)
+{
+ int fd = (int)h;
+ marshall_command(fd, "ioctl,bind_virq,%d\n", virq);
+ return unmarshall_return(fd);
+}
+
+static int xiu_evtchn_unbind(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
port)
+{
+ int fd = (int)h;
+ marshall_command(fd, "ioctl,unbind,%d\n", port);
+ return unmarshall_return(fd);
+}
+
+static evtchn_port_or_error_t xiu_evtchn_pending(xc_evtchn *xce,
xc_osdep_handle h)
+{
+ int fd = (int)h;
+ evtchn_port_t port;
+
+ marshall_command(fd, "read\n");
+ port = unmarshall_int(fd);
+ if (unmarshall_return(fd) < 0)
+ return port;
+ else
+ return -1;
+}
+
+static int xiu_evtchn_unmask(xc_evtchn *xce, xc_osdep_handle h, evtchn_port_t
port)
+{
+ int fd = (int)h;
+ marshall_command(fd, "write,%d\n", port);
+ return unmarshall_return(fd);
+}
+
+static struct xc_osdep_ops xiu_evtchn_ops = {
+ .open = &xiu_evtchn_open,
+ .close = &xiu_evtchn_close,
+
+ .u.evtchn = {
+ .fd = &xiu_evtchn_fd,
+ .notify = &xiu_evtchn_notify,
+ .bind_unbound_port = &xiu_evtchn_bind_unbound_port,
+ .bind_interdomain = &xiu_evtchn_bind_interdomain,
+ .bind_virq = &xiu_evtchn_bind_virq,
+ .unbind = &xiu_evtchn_unbind,
+ .pending = &xiu_evtchn_pending,
+ .unmask = &xiu_evtchn_unmask,
+ },
+};
+
+static struct xc_osdep_ops * xiu_osdep_init(xc_interface *xch, enum
xc_osdep_type type)
+{
+ if (getenv("XIU") == NULL)
+ {
+ ERROR(xch, "XIU not found. Set $XIU");
+ return NULL;
+ }
+
+ switch ( type )
+ {
+ case XC_OSDEP_PRIVCMD:
+ return &xiu_privcmd_ops;
+ case XC_OSDEP_EVTCHN:
+ return &xiu_evtchn_ops;
+ case XC_OSDEP_GNTTAB:
+ ERROR(xch, "GNTTAB interface not supported on this platform");
+ return NULL;
+ default:
+ return NULL;
+ }
+}
+
+xc_osdep_info_t xc_osdep_info = {
+ .name = "Xen In Userspace (XIU) Simulator",
+ .init = &xiu_osdep_init,
+ .fake = 1,
+};
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
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