|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC XEN PATCH v2 15/15] tools/misc: add xen-ndctl
xen-ndctl is a tool for users in Dom0 to setup the host pmem with Xen
hypervisor. It's used to specify the storage, which is either the
regular RAM or a pmem range, to manage the specified pmem.
Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
---
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
---
.gitignore | 1 +
tools/misc/Makefile | 4 +
tools/misc/xen-ndctl.c | 227 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 232 insertions(+)
diff --git a/.gitignore b/.gitignore
index 4567de7a59..1af7cda8bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -206,6 +206,7 @@ tools/misc/xen-hvmctx
tools/misc/xenlockprof
tools/misc/lowmemd
tools/misc/xencov
+tools/misc/xen-ndctl
tools/pkg-config/*
tools/qemu-xen-build
tools/xentrace/xenalyze
diff --git a/tools/misc/Makefile b/tools/misc/Makefile
index 8152f7bfb5..86d89f1577 100644
--- a/tools/misc/Makefile
+++ b/tools/misc/Makefile
@@ -31,6 +31,7 @@ INSTALL_SBIN += xenperf
INSTALL_SBIN += xenpm
INSTALL_SBIN += xenwatchdogd
INSTALL_SBIN += xen-livepatch
+INSTALL_SBIN += xen-ndctl
INSTALL_SBIN += $(INSTALL_SBIN-y)
# Everything to be installed in a private bin/
@@ -108,4 +109,7 @@ xen-lowmemd: xen-lowmemd.o
xencov: xencov.o
$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+xen-ndctl: xen-ndctl.o
+ $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+
-include $(DEPS)
diff --git a/tools/misc/xen-ndctl.c b/tools/misc/xen-ndctl.c
index e69de29bb2..f556a31dcf 100644
--- a/tools/misc/xen-ndctl.c
+++ b/tools/misc/xen-ndctl.c
@@ -0,0 +1,227 @@
+/*
+ * xen-ndctl.c
+ *
+ * Xen NVDIMM management tool
+ *
+ * Copyright (C) 2017, Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <xenctrl.h>
+
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+
+static xc_interface *xch;
+
+static int handle_help(int argc, char *argv[]);
+static int handle_list_cmds(int argc, char *argv[]);
+static int handle_setup(int argc, char *argv[]);
+
+static const struct
+{
+ const char *name;
+ const char *syntax;
+ const char *help;
+ int (*handler)(int argc, char *argv[]);
+ bool need_xc;
+} cmds[] =
+{
+ {
+ .name = "help",
+ .syntax = "[command]",
+ .help = "Show this message or the help message of 'command'.\n"
+ "Use command 'list-cmds' to list all supported commands.\n",
+ .handler = handle_help,
+ },
+
+ {
+ .name = "list-cmds",
+ .syntax = "",
+ .help = "List all supported commands\n",
+ .handler = handle_list_cmds,
+ },
+
+ {
+ .name = "setup",
+ .syntax = "<smfn> <emfn> [<mgmt_smfn> <mgmt_emfn>]",
+ .help = "Setup Xen hypervisor to prepare for mapping host pmem
pages\n"
+ "from MFN 'smfn' to 'emfn'. If 'mgmt_smfn' and 'mgmt_emfn'
are\n"
+ "specified, host pmem pages from MFN 'mgmt_smfn' and
'mgmt_emfn'\n"
+ "will be used by Xen hypervisor to manage this mapping.\n",
+ .handler = handle_setup,
+ .need_xc = true,
+ },
+};
+
+static void show_help(const char *cmd)
+{
+ int nr = ARRAY_SIZE(cmds);
+ unsigned int i;
+
+ fprintf(stderr, "Usage: xen-ndctl ");
+
+ if ( !cmd )
+ {
+ fprintf(stderr,
+ "<command> [args]\n\n"
+ "List all supported commands by 'xen-ndctl list-cmds'\n"
+ "Get help of a command by 'xen-ndctl help <command>'\n");
+ return;
+ }
+
+ for ( i = 0; i < nr; i++ )
+ if ( !strcmp(cmd, cmds[i].name) )
+ {
+ fprintf(stderr, "%s %s\n\n%s",
+ cmds[i].name, cmds[i].syntax, cmds[i].help);
+ break;
+ }
+
+ if ( i == nr )
+ fprintf(stderr, "Unsupported command '%s'. "
+ "List all supported commands by 'xen-ndctl list-cmds'.\n",
+ cmd);
+}
+
+static int handle_unrecognized_arguments(const char *cmd)
+{
+ fprintf(stderr, "Unrecognized arguments\n\n");
+ show_help(cmd);
+ return -EINVAL;
+}
+
+static int handle_help(int argc, char *argv[])
+{
+ if ( argc == 1 )
+ show_help(NULL);
+ else if ( argc == 2 )
+ show_help(argv[1]);
+ else
+ return handle_unrecognized_arguments(argv[0]);
+
+ return 0;
+}
+
+static int handle_list_cmds(int argc, char *argv[])
+{
+ unsigned int i;
+
+ if ( argc > 1 )
+ return handle_unrecognized_arguments(argv[0]);
+
+ for ( i = 0; i < ARRAY_SIZE(cmds); i++ )
+ fprintf(stderr, "%s\n", cmds[i].name);
+
+ return 0;
+}
+
+static int handle_setup(int argc, char *argv[])
+{
+ unsigned long smfn, emfn, mgmt_smfn = INVALID_MFN, mgmt_emfn = INVALID_MFN;
+
+ if ( argc != 3 /* xen-ndctl setup smfn emfn */ &&
+ argc != 5 /* xen-ndctl setup smfn emfn mgmt_smfn mgmt_emfn */ )
+ return handle_unrecognized_arguments(argv[0]);
+
+#define strtoul_check_overflow(str, ret) \
+ do { \
+ (ret) = strtoul((str), NULL, 0); \
+ if ( errno == ERANGE ) \
+ { \
+ fprintf(stderr, "MFN '%s' overflow\n", (str)); \
+ return -errno; \
+ } \
+ } while (0)
+
+ strtoul_check_overflow(argv[1], smfn);
+ strtoul_check_overflow(argv[2], emfn);
+
+ if ( argc == 5 )
+ {
+ strtoul_check_overflow(argv[3], mgmt_smfn);
+ strtoul_check_overflow(argv[4], mgmt_emfn);
+ }
+
+#undef strtoul_check_overflow
+
+ return xc_nvdimm_pmem_setup(xch, smfn, emfn, mgmt_smfn, mgmt_emfn);
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned int i;
+ int nr_cmds = ARRAY_SIZE(cmds), rc = 0;
+ const char *cmd;
+
+ if ( argc <= 1 )
+ {
+ show_help(NULL);
+ return 0;
+ }
+
+ cmd = argv[1];
+
+ for ( i = 0; i < nr_cmds; i++ )
+ if ( !strcmp(cmd, cmds[i].name) )
+ {
+ if ( cmds[i].need_xc )
+ {
+ xch = xc_interface_open(0, 0, 0);
+ if ( !xch )
+ {
+ rc = -errno;
+ fprintf(stderr, "failed to get xc handler\n");
+ break;
+ }
+ }
+ rc = cmds[i].handler(argc - 1, &argv[1]);
+ if ( rc )
+ fprintf(stderr, "%s failed: %s\n", cmds[i].name,
strerror(-rc));
+ break;
+ }
+
+ if ( i == nr_cmds )
+ {
+ fprintf(stderr, "Unsupported command '%s'. "
+ "List all supported commands by 'xen-ndctl list-cmds'.\n",
+ cmd);
+ rc = -ENOSYS;
+ }
+
+ if ( xch )
+ xc_interface_close(xch);
+
+ return rc;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
--
2.12.0
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |