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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] libxc: osdep: add framework for abstracting access to dom0 OS hypervisor interfaces.
# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1291369006 0
# Node ID bc00db3ff3f9acb2b8044eea74eebb641c356586
# Parent 9a1a0f77259ec498e07cbf4a07f2502f046b1297
libxc: osdep: add framework for abstracting access to dom0 OS hypervisor
interfaces.
This patch introduces the basic infrastructure and uses it for open
and close operations on privcmd, evtchn and gnttab devices.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
---
tools/libxc/Makefile | 2
tools/libxc/xc_linux.c | 102 +++++++++++++++++++++++++++++++++------------
tools/libxc/xc_minios.c | 99 ++++++++++++++++++++++++++++++++-----------
tools/libxc/xc_netbsd.c | 74 +++++++++++++++++++++++++-------
tools/libxc/xc_private.c | 84 +++++++++++++++++++++++++++----------
tools/libxc/xc_private.h | 22 ++-------
tools/libxc/xc_solaris.c | 82 +++++++++++++++++++++++++++---------
tools/libxc/xenctrlosdep.h | 90 +++++++++++++++++++++++++++++++++++++++
8 files changed, 429 insertions(+), 126 deletions(-)
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/Makefile
--- a/tools/libxc/Makefile Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/Makefile Fri Dec 03 09:36:46 2010 +0000
@@ -109,7 +109,7 @@ install: build
$(INSTALL_DATA) libxenctrl.a $(DESTDIR)$(LIBDIR)
ln -sf libxenctrl.so.$(MAJOR).$(MINOR)
$(DESTDIR)$(LIBDIR)/libxenctrl.so.$(MAJOR)
ln -sf libxenctrl.so.$(MAJOR) $(DESTDIR)$(LIBDIR)/libxenctrl.so
- $(INSTALL_DATA) xenctrl.h xentoollog.h $(DESTDIR)$(INCLUDEDIR)
+ $(INSTALL_DATA) xenctrl.h xenctrlosdep.h xentoollog.h
$(DESTDIR)$(INCLUDEDIR)
$(INSTALL_PROG) libxenguest.so.$(MAJOR).$(MINOR) $(DESTDIR)$(LIBDIR)
$(INSTALL_DATA) libxenguest.a $(DESTDIR)$(LIBDIR)
ln -sf libxenguest.so.$(MAJOR).$(MINOR)
$(DESTDIR)$(LIBDIR)/libxenguest.so.$(MAJOR)
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xc_linux.c
--- a/tools/libxc/xc_linux.c Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/xc_linux.c Fri Dec 03 09:36:46 2010 +0000
@@ -29,7 +29,7 @@
#include <unistd.h>
#include <fcntl.h>
-int xc_interface_open_core(xc_interface *xch)
+static xc_osdep_handle linux_privcmd_open(xc_interface *xch)
{
int flags, saved_errno;
int fd = open("/proc/xen/privcmd", O_RDWR);
@@ -37,7 +37,7 @@ int xc_interface_open_core(xc_interface
if ( fd == -1 )
{
PERROR("Could not obtain handle on privileged command interface");
- return -1;
+ return XC_OSDEP_OPEN_ERROR;
}
/* Although we return the file handle as the 'xc handle' the API
@@ -58,19 +58,21 @@ int xc_interface_open_core(xc_interface
goto error;
}
- return fd;
+ xch->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+
+ return (xc_osdep_handle)fd;
error:
saved_errno = errno;
close(fd);
errno = saved_errno;
-
- return -1;
-}
-
-int xc_interface_close_core(xc_interface *xch)
-{
- return close(xch->fd);
+ return XC_OSDEP_OPEN_ERROR;
+}
+
+static int linux_privcmd_close(xc_interface *xch, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
static int xc_map_foreign_batch_single(xc_interface *xch, uint32_t dom,
@@ -325,16 +327,27 @@ int do_xen_hypercall(xc_interface *xch,
(unsigned long)hypercall);
}
+static struct xc_osdep_ops linux_privcmd_ops = {
+ .open = &linux_privcmd_open,
+ .close = &linux_privcmd_close,
+};
+
#define DEVXEN "/dev/xen/"
-int xc_evtchn_open_core(xc_evtchn *xce)
-{
- return open(DEVXEN "evtchn", O_RDWR);
-}
-
-int xc_evtchn_close_core(xc_evtchn *xce)
-{
- return close(xce->fd);
+static xc_osdep_handle linux_evtchn_open(xc_evtchn *xce)
+{
+ int fd = open(DEVXEN "evtchn", O_RDWR);
+ if ( fd == -1 )
+ return XC_OSDEP_OPEN_ERROR;
+
+ xce->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int linux_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
int xc_evtchn_fd(xc_evtchn *xce)
@@ -407,6 +420,11 @@ int xc_evtchn_unmask(xc_evtchn *xce, evt
{
return write_exact(xce->fd, (char *)&port, sizeof(port));
}
+
+static struct xc_osdep_ops linux_evtchn_ops = {
+ .open = &linux_evtchn_open,
+ .close = &linux_evtchn_close,
+};
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
@@ -443,14 +461,21 @@ void discard_file_cache(xc_interface *xc
errno = saved_errno;
}
-int xc_gnttab_open_core(xc_gnttab *xcg)
-{
- return open(DEVXEN "gntdev", O_RDWR);
-}
-
-int xc_gnttab_close_core(xc_gnttab *xcg)
-{
- return close(xcg->fd);
+static xc_osdep_handle linux_gnttab_open(xc_gnttab *xcg)
+{
+ int fd = open(DEVXEN "gntdev", O_RDWR);
+
+ if ( fd == -1 )
+ return XC_OSDEP_OPEN_ERROR;
+
+ xcg->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int linux_gnttab_close(xc_gnttab *xcg, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
void *xc_gnttab_map_grant_ref(xc_gnttab *xch, uint32_t domid, uint32_t ref,
int prot)
@@ -602,6 +627,31 @@ int xc_gnttab_set_max_grants(xc_gnttab *
return 0;
}
+static struct xc_osdep_ops linux_gnttab_ops = {
+ .open = &linux_gnttab_open,
+ .close = &linux_gnttab_close,
+};
+
+static struct xc_osdep_ops *linux_osdep_init(xc_interface *xch, enum
xc_osdep_type type)
+{
+ switch ( type )
+ {
+ case XC_OSDEP_PRIVCMD:
+ return &linux_privcmd_ops;
+ case XC_OSDEP_EVTCHN:
+ return &linux_evtchn_ops;
+ case XC_OSDEP_GNTTAB:
+ return &linux_gnttab_ops;
+ default:
+ return NULL;
+ }
+}
+
+xc_osdep_info_t xc_osdep_info = {
+ .name = "Linux Native OS interface",
+ .init = &linux_osdep_init,
+};
+
/*
* Local variables:
* mode: C
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xc_minios.c
--- a/tools/libxc/xc_minios.c Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/xc_minios.c Fri Dec 03 09:36:46 2010 +0000
@@ -49,14 +49,21 @@ extern void minios_evtchn_close_fd(int f
extern struct wait_queue_head event_queue;
-int xc_interface_open_core(xc_interface *xch)
-{
- return alloc_fd(FTYPE_XC);
-}
-
-int xc_interface_close_core(xc_interface *xch)
-{
- return close(xch->fd);
+static xc_osdep_handle minios_privcmd_open(xc_interface *xch)
+{
+ int fd = alloc_fd(FTYPE_XC);
+
+ if ( fd == -1)
+ return XC_OSDEP_OPEN_ERROR;
+
+ xch->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int minios_privcmd_close(xc_interface *xch, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
void minios_interface_close_fd(int fd)
@@ -172,20 +179,29 @@ int do_xen_hypercall(xc_interface *xch,
return call.result;
}
-int xc_evtchn_open_core(xc_evtchn *xce)
+static struct xc_osdep_ops minios_privcmd_ops = {
+ .open = &minios_privcmd_open,
+ .close = &minios_privcmd_close,
+};
+
+static xc_osdep_handle minios_evtchn_open(xc_evtchn *xce)
{
int fd = alloc_fd(FTYPE_EVTCHN), i;
+ if ( fd == -1 )
+ return XC_OSDEP_OPEN_ERROR;
for (i = 0; i < MAX_EVTCHN_PORTS; i++) {
files[fd].evtchn.ports[i].port = -1;
files[fd].evtchn.ports[i].bound = 0;
}
printf("evtchn_open() -> %d\n", fd);
- return fd;
-}
-
-int xc_evtchn_close_core(xc_evtchn *xce)
-{
- return close(xce->fd);
+ xce->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int minios_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
void minios_evtchn_close_fd(int fd)
@@ -368,6 +384,11 @@ int xc_evtchn_unmask(xc_evtchn *xce, evt
return 0;
}
+static struct xc_osdep_ops minios_evtchn_ops = {
+ .open = &minios_evtchn_open,
+ .close = &minios_evtchn_close,
+};
+
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
{
@@ -375,17 +396,20 @@ void discard_file_cache(xc_interface *xc
fsync(fd);
}
-int xc_gnttab_open_core(xc_gnttab *xcg)
-{
- int fd;
- fd = alloc_fd(FTYPE_GNTMAP);
+static xc_osdep_handle minios_gnttab_open(xc_gnttab *xcg)
+{
+ int fd = alloc_fd(FTYPE_GNTMAP);
+ if ( fd == -1 )
+ return XC_OSDEP_OPEN_ERROR;
gntmap_init(&files[fd].gntmap);
- return fd;
-}
-
-int xc_gnttab_close_core(xc_gnttab *xcg)
-{
- return close(xcg->fd);
+ xcg->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int minios_gnttab_close(xc_gnttab *xcg, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
void minios_gnttab_close_fd(int fd)
@@ -459,6 +483,31 @@ int xc_gnttab_set_max_grants(xc_gnttab *
}
return ret;
}
+
+static struct xc_osdep_ops minios_gnttab_ops = {
+ .open = &minios_gnttab_open,
+ .close = &minios_gnttab_close,
+};
+
+static struct xc_osdep_ops *minios_osdep_init(xc_interface *xch, enum
xc_osdep_type type)
+{
+ switch ( type )
+ {
+ case XC_OSDEP_PRIVCMD:
+ return &minios_privcmd_ops;
+ case XC_OSDEP_EVTCHN:
+ return &minios_evtchn_ops;
+ case XC_OSDEP_GNTTAB:
+ return &minios_gnttab_ops;
+ default:
+ return NULL;
+ }
+}
+
+xc_osdep_info_t xc_osdep_info = {
+ .name = "Minios Native OS interface",
+ .init = &minios_osdep_init,
+};
/*
* Local variables:
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xc_netbsd.c
--- a/tools/libxc/xc_netbsd.c Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/xc_netbsd.c Fri Dec 03 09:36:46 2010 +0000
@@ -24,7 +24,7 @@
#include <unistd.h>
#include <fcntl.h>
-int xc_interface_open_core(xc_interface *xch)
+static xc_osdep_handle netbsd_privcmd_open(xc_interface *xch)
{
int flags, saved_errno;
int fd = open("/kern/xen/privcmd", O_RDWR);
@@ -32,7 +32,7 @@ int xc_interface_open_core(xc_interface
if ( fd == -1 )
{
PERROR("Could not obtain handle on privileged command interface");
- return -1;
+ return XC_OSDEP_OPEN_ERROR;
}
/* Although we return the file handle as the 'xc handle' the API
@@ -51,18 +51,21 @@ int xc_interface_open_core(xc_interface
goto error;
}
- return fd;
+ xch->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+
+ return (xc_osinteface_handle)fd;
error:
saved_errno = errno;
close(fd);
errno = saved_errno;
- return -1;
-}
-
-int xc_interface_close_core(xc_interface *xch)
-{
- return close(xch->fd);
+ return XC_OSDEP_OPEN_ERROR;
+}
+
+static int netbsd_privcmd_close(xc_interface *xch, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
void *xc_map_foreign_batch(xc_interface *xch, uint32_t dom, int prot,
@@ -179,16 +182,27 @@ int do_xen_hypercall(xc_interface *xch,
return (hypercall->retval);
}
+static struct xc_osdep_ops netbsd_privcmd_ops = {
+ .open = &netbsd_privcmd_open,
+ .close = &netbsd_privcmd_close,
+};
+
#define EVTCHN_DEV_NAME "/dev/xenevt"
-int xc_evtchn_open_core(xc_evtchn *xce)
-{
- return open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
-}
-
-int xc_evtchn_close_core(xc_evtchn *xce)
-{
- return close(xce->fd);
+static xc_osdep_handle netbsd_evtchn_open(xc_evtchn *xce)
+{
+ int fd = open(EVTCHN_DEV_NAME, O_NONBLOCK|O_RDWR);
+ if ( fd == -1 )
+ return XC_OSDEP_OPEN_ERROR;
+
+ xce->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int netbsd_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
int xc_evtchn_fd(xc_evtchn *xce)
@@ -276,6 +290,11 @@ int xc_evtchn_unmask(xc_evtchn *xce, evt
{
return write_exact(xce->fd, (char *)&port, sizeof(port));
}
+
+static struct xc_osdep_ops netbsd_evtchn_ops = {
+ .open = &netbsd_evtchn_open,
+ .close = &netbsd_evtchn_close,
+};
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
@@ -311,6 +330,27 @@ void discard_file_cache(xc_interface *xc
out:
errno = saved_errno;
}
+
+static struct xc_osdep_ops *netbsd_osdep_init(xc_interface *xch, enum
xc_osdep_type type)
+{
+ switch ( type )
+ {
+ case XC_OSDEP_PRIVCMD:
+ return &netbsd_privcmd_ops;
+ case XC_OSDEP_EVTCHN:
+ return &netbsd_evtchn_ops;
+ case XC_OSDEP_GNTTAB:
+ ERROR("GNTTAB interface not supported on this platform");
+ return NULL;
+ default:
+ return NULL;
+ }
+}
+
+xc_osdep_info_t xc_osdep_info = {
+ .name = "Netbsd Native OS interface",
+ .init = &netbsd_osdep_init,
+};
/*
* Local variables:
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xc_private.c
--- a/tools/libxc/xc_private.c Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/xc_private.c Fri Dec 03 09:36:46 2010 +0000
@@ -27,11 +27,33 @@
#include <pthread.h>
#include <assert.h>
+/*
+ * Returns a (shallow) copy of the xc_osdep_info_t for the
+ * active OS interface.
+ *
+ * Returns:
+ * 0 - on success
+ * -1 - on error
+ */
+static int xc_osdep_get_info(xc_interface *xch, xc_osdep_info_t *info)
+{
+ int rc = -1;
+
+ *info = xc_osdep_info;
+
+ rc = 0;
+
+ return rc;
+}
+
+static void xc_osdep_put(xc_osdep_info_t *info)
+{
+}
+
static struct xc_interface_core *xc_interface_open_common(xentoollog_logger
*logger,
- xentoollog_logger
*dombuild_logger,
- unsigned open_flags,
- enum xc_interface_type type,
- int (*open_core)(struct
xc_interface_core *xch))
+ xentoollog_logger
*dombuild_logger,
+ unsigned open_flags,
+ enum xc_osdep_type
type)
{
struct xc_interface_core xch_buf, *xch = &xch_buf;
@@ -43,6 +65,9 @@ static struct xc_interface_core *xc_inte
xch->error_handler = logger; xch->error_handler_tofree = 0;
xch->dombuild_logger = dombuild_logger; xch->dombuild_logger_tofree = 0;
+
+ xch->ops_handle = XC_OSDEP_OPEN_ERROR;
+ xch->ops = NULL;
if (!xch->error_handler) {
xch->error_handler = xch->error_handler_tofree =
@@ -61,30 +86,37 @@ static struct xc_interface_core *xc_inte
*xch = xch_buf;
if (!(open_flags & XC_OPENFLAG_DUMMY)) {
- xch->fd = open_core(xch);
- if (xch->fd < 0)
+ if ( xc_osdep_get_info(xch, &xch->osdep) < 0 )
goto err;
+
+ xch->ops = xch->osdep.init(xch, type);
+ if ( xch->ops == NULL )
+ goto err_put_iface;
+
+ xch->ops_handle = xch->ops->open(xch);
+ if (xch->ops_handle == XC_OSDEP_OPEN_ERROR)
+ goto err_put_iface;
}
return xch;
+err_put_iface:
+ xc_osdep_put(&xch->osdep);
err:
if (xch) xtl_logger_destroy(xch->error_handler_tofree);
if (xch != &xch_buf) free(xch);
- return 0;
-}
-
-static int xc_interface_close_common(xc_interface *xch, int
(*close_core)(struct xc_interface_core *xch))
+ return NULL;
+}
+
+static int xc_interface_close_common(xc_interface *xch)
{
int rc = 0;
xtl_logger_destroy(xch->dombuild_logger_tofree);
xtl_logger_destroy(xch->error_handler_tofree);
- if (xch->fd >= 0) {
- rc = close_core(xch);
- if (rc) PERROR("Could not close hypervisor interface");
- }
+ rc = xch->ops->close(xch, xch->ops_handle);
+ if (rc) PERROR("Could not close hypervisor interface");
free(xch);
return rc;
@@ -94,37 +126,45 @@ xc_interface *xc_interface_open(xentooll
xentoollog_logger *dombuild_logger,
unsigned open_flags)
{
- return xc_interface_open_common(logger, dombuild_logger, open_flags,
- XC_INTERFACE_PRIVCMD,
&xc_interface_open_core);
+ xc_interface *xch;
+
+ xch = xc_interface_open_common(logger, dombuild_logger, open_flags,
+ XC_OSDEP_PRIVCMD);
+
+ return xch;
}
int xc_interface_close(xc_interface *xch)
{
- return xc_interface_close_common(xch, &xc_interface_close_core);
+ return xc_interface_close_common(xch);
}
xc_evtchn *xc_evtchn_open(xentoollog_logger *logger,
unsigned open_flags)
{
- return xc_interface_open_common(logger, NULL, open_flags,
- XC_INTERFACE_EVTCHN, &xc_evtchn_open_core);
+ xc_evtchn *xce;
+
+ xce = xc_interface_open_common(logger, NULL, open_flags,
+ XC_OSDEP_EVTCHN);
+
+ return xce;
}
int xc_evtchn_close(xc_evtchn *xce)
{
- return xc_interface_close_common(xce, &xc_evtchn_close_core);
+ return xc_interface_close_common(xce);
}
xc_gnttab *xc_gnttab_open(xentoollog_logger *logger,
unsigned open_flags)
{
return xc_interface_open_common(logger, NULL, open_flags,
- XC_INTERFACE_GNTTAB, &xc_gnttab_open_core);
+ XC_OSDEP_GNTTAB);
}
int xc_gnttab_close(xc_gnttab *xcg)
{
- return xc_interface_close_common(xcg, &xc_gnttab_close_core);
+ return xc_interface_close_common(xcg);
}
static pthread_key_t errbuf_pkey;
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xc_private.h
--- a/tools/libxc/xc_private.h Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/xc_private.h Fri Dec 03 09:36:46 2010 +0000
@@ -30,6 +30,7 @@
#include <sys/ioctl.h>
#include "xenctrl.h"
+#include "xenctrlosdep.h"
#include <xen/sys/privcmd.h>
@@ -65,14 +66,8 @@
*/
#define MAX_PAGECACHE_USAGE (4*1024)
-enum xc_interface_type {
- XC_INTERFACE_PRIVCMD,
- XC_INTERFACE_EVTCHN,
- XC_INTERFACE_GNTTAB,
-};
-
struct xc_interface_core {
- enum xc_interface_type type;
+ enum xc_osdep_type type;
int fd;
int flags;
xentoollog_logger *error_handler, *error_handler_tofree;
@@ -80,6 +75,10 @@ struct xc_interface_core {
struct xc_error last_error; /* for xc_get_last_error */
FILE *dombuild_logger_file;
const char *currently_progress_reporting;
+
+ xc_osdep_info_t osdep;
+ xc_osdep_ops *ops; /* backend operations */
+ xc_osdep_handle ops_handle; /* opaque data for xc_osdep_ops */
};
void xc_report_error(xc_interface *xch, int code, const char *fmt, ...);
@@ -263,15 +262,6 @@ static inline int do_sysctl(xc_interface
}
int do_memory_op(xc_interface *xch, int cmd, void *arg, size_t len);
-
-int xc_interface_open_core(struct xc_interface_core *xch); /* returns fd, logs
errors */
-int xc_interface_close_core(struct xc_interface_core *xch); /* no logging */
-
-int xc_evtchn_open_core(struct xc_interface_core *xce); /* returns fd, logs
errors */
-int xc_evtchn_close_core(struct xc_interface_core *xce); /* no logging */
-
-int xc_gnttab_open_core(struct xc_interface_core *xcg); /* returns fd, logs
errors */
-int xc_gnttab_close_core(struct xc_interface_core *xcg); /* no logging */
void *xc_map_foreign_ranges(xc_interface *xch, uint32_t dom,
size_t size, int prot, size_t chunksize,
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xc_solaris.c
--- a/tools/libxc/xc_solaris.c Thu Dec 23 15:32:52 2010 +0000
+++ b/tools/libxc/xc_solaris.c Fri Dec 03 09:36:46 2010 +0000
@@ -25,7 +25,7 @@
#include <unistd.h>
#include <fcntl.h>
-int xc_interface_open_core(xc_interface *xch)
+static xc_osdep_handle solaris_privcmd_open(xc_interface *xch)
{
int flags, saved_errno;
int fd = open("/dev/xen/privcmd", O_RDWR);
@@ -33,7 +33,7 @@ int xc_interface_open_core(xc_interface
if ( fd == -1 )
{
PERROR("Could not obtain handle on privileged command interface");
- return -1;
+ return XC_OSDEP_OPEN_ERROR;
}
/* Although we return the file handle as the 'xc handle' the API
@@ -52,17 +52,19 @@ int xc_interface_open_core(xc_interface
goto error;
}
- return fd;
+ xch->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
error:
saved_errno = errno;
close(fd);
errno = saved_errno;
- return -1;
-}
-
-int xc_interface_close(xc_interface *xch, int fd)
-{
+ return XC_OSDEP_OPEN_ERROR;
+}
+
+static int solaris_privcmd_close(xc_interface *xch, xc_osdep_handle h)
+{
+ int fd = (int)h;
return close(fd);
}
@@ -154,7 +156,6 @@ mmap_failed:
return NULL;
}
-
static int do_privcmd(xc_interface *xch, unsigned int cmd, unsigned long data)
{
return ioctl(xch->fd, cmd, data);
@@ -167,22 +168,29 @@ int do_xen_hypercall(xc_interface *xch,
(unsigned long)hypercall);
}
-int xc_evtchn_open_core(xc_evtchn *xce)
+static struct xc_osdep_ops solaris_privcmd_ops = {
+ .open = &solaris_privcmd_open,
+ .close = &solaris_privcmd_close,
+};
+
+static xc_osdep_handle solaris_evtchn_open(xc_evtchn *xce)
{
int fd;
if ( (fd = open("/dev/xen/evtchn", O_RDWR)) == -1 )
{
PERROR("Could not open event channel interface");
- return -1;
- }
-
- return fd;
-}
-
-int xc_evtchn_close_core(xc_evtchn *xce)
-{
- return close(xce->fd);
+ return XC_OSDEP_OPEN_ERROR;
+ }
+
+ xce->fd = fd; /* Remove after transition to full xc_osdep_ops. */
+ return (xc_osdep_handle)fd;
+}
+
+static int solaris_evtchn_close(xc_evtchn *xce, xc_osdep_handle h)
+{
+ int fd = (int)h;
+ return close(fd);
}
int xc_evtchn_fd(xc_evtchn *xce)
@@ -256,8 +264,44 @@ int xc_evtchn_unmask(xc_evtchn *xce, evt
return write_exact(xce->fd, (char *)&port, sizeof(port));
}
+static struct xc_osdep_ops solaris_evtchn_ops = {
+ .open = &solaris_evtchn_open,
+ .close = &solaris_evtchn_close,
+};
+
/* Optionally flush file to disk and discard page cache */
void discard_file_cache(xc_interface *xch, int fd, int flush)
{
// TODO: Implement for Solaris!
}
+
+static struct xc_osdep_ops *solaris_osdep_init(xc_interface *xch, enum
xc_osdep_type type)
+{
+ switch ( type )
+ {
+ case XC_OSDEP_PRIVCMD:
+ return &solaris_privcmd_ops;
+ case XC_OSDEP_EVTCHN:
+ return &solaris_evtchn_ops;
+ case XC_OSDEP_GNTTAB:
+ ERROR("GNTTAB interface not supported on this platform");
+ return NULL;
+ default:
+ return NULL;
+ }
+}
+
+xc_osdep_info_t xc_osdep_info = {
+ .name = "Solaris Native OS interface",
+ .init = &solaris_osdep_init,
+};
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r 9a1a0f77259e -r bc00db3ff3f9 tools/libxc/xenctrlosdep.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/libxc/xenctrlosdep.h Fri Dec 03 09:36:46 2010 +0000
@@ -0,0 +1,90 @@
+/******************************************************************************
+ *
+ * Interface to OS specific low-level operations
+ *
+ * Copyright (c) 2010, Citrix Systems Inc.
+ *
+ * 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
+ */
+
+/*
+ * This interface defines the interactions between the Xen control
+ * libraries and the OS facilities used to communicate with the
+ * hypervisor.
+ */
+
+#ifndef XC_OSDEP_H
+#define XC_OSDEP_H
+
+/* Tell the Xen public headers we are a user-space tools build. */
+#ifndef __XEN_TOOLS__
+#define __XEN_TOOLS__ 1
+#endif
+
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include <xen/sys/privcmd.h>
+
+enum xc_osdep_type {
+ XC_OSDEP_PRIVCMD,
+ XC_OSDEP_EVTCHN,
+ XC_OSDEP_GNTTAB,
+};
+
+/* Opaque handle internal to the backend */
+typedef unsigned long xc_osdep_handle;
+
+#define XC_OSDEP_OPEN_ERROR ((xc_osdep_handle)-1)
+
+struct xc_osdep_ops
+{
+ /* Opens an interface.
+ *
+ * Must return an opaque handle on success or
+ * XC_OSDEP_OPEN_ERROR on failure
+ */
+ xc_osdep_handle (*open)(xc_interface *xch);
+
+ int (*close)(xc_interface *xch, xc_osdep_handle h);
+};
+typedef struct xc_osdep_ops xc_osdep_ops;
+
+typedef xc_osdep_ops *(*xc_osdep_init_fn)(xc_interface *xch, enum
xc_osdep_type);
+
+struct xc_osdep_info
+{
+ /* Describes this backend. */
+ const char *name;
+
+ /* Returns ops function. */
+ xc_osdep_init_fn init;
+};
+typedef struct xc_osdep_info xc_osdep_info_t;
+
+/* All backends, including the builtin backend, must supply this structure. */
+extern xc_osdep_info_t xc_osdep_info;
+
+#endif
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
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