@@ -243,6 +243,7 @@ tools/misc/xen_cpuperf
tools/misc/xen-cpuid
tools/misc/xen-detect
tools/misc/xen-diag
+tools/misc/xen-domctx
tools/misc/xen-tmem-list-parse
tools/misc/xen-livepatch
tools/misc/xenperf
@@ -32,6 +32,7 @@ INSTALL_SBIN += xenpm
INSTALL_SBIN += xenwatchdogd
INSTALL_SBIN += xen-livepatch
INSTALL_SBIN += xen-diag
+INSTALL_SBIN += xen-domctx
INSTALL_SBIN += $(INSTALL_SBIN-y)
# Everything to be installed in a private bin/
@@ -111,6 +112,9 @@ xen-livepatch: xen-livepatch.o
xen-diag: xen-diag.o
$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+xen-domctx: xen-domctx.o
+ $(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
+
xen-lowmemd: xen-lowmemd.o
$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
new file mode 100644
@@ -0,0 +1,172 @@
+/*
+ * xen-domctx.c
+ *
+ * Print out domain save records in a human-readable way.
+ *
+ * Copyright Amazon.com Inc. or its affiliates.
+ *
+ * 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 <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <err.h>
+
+#include <xenctrl.h>
+#include <xen-tools/libs.h>
+#include <xen/xen.h>
+#include <xen/domctl.h>
+#include <xen/save.h>
+
+static void *buf = NULL;
+static size_t len, off;
+
+#define GET_PTR(_x) \
+ do { \
+ if ( len - off < sizeof(*(_x)) ) \
+ errx(1, "error: need another %lu bytes, only %lu available", \
+ sizeof(*(_x)), len - off); \
+ (_x) = buf + off; \
+ } while (false);
+
+static void dump_start(void)
+{
+ struct domain_context_start *s;
+
+ GET_PTR(s);
+
+ printf(" START: Xen %u.%u\n", s->xen_major, s->xen_minor);
+}
+
+static void dump_end(void)
+{
+ struct domain_context_end *e;
+
+ GET_PTR(e);
+
+ printf(" END\n");
+}
+
+static void usage(void)
+{
+ errx(1, "usage: <domid> [ <type> [ <instance> ]]");
+}
+
+int main(int argc, char **argv)
+{
+ char *s, *e;
+ long domid;
+ long type = -1;
+ long instance = -1;
+ unsigned int entry;
+ xc_interface *xch;
+ int rc;
+
+ if ( argc < 2 || argc > 4 )
+ usage();
+
+ s = e = argv[1];
+ domid = strtol(s, &e, 0);
+
+ if ( *s == '\0' || *e != '\0' ||
+ domid < 0 || domid >= DOMID_FIRST_RESERVED )
+ errx(1, "invalid domid '%s'", s);
+
+ if ( argc >= 3 )
+ {
+ s = e = argv[2];
+ type = strtol(s, &e, 0);
+
+ if ( *s == '\0' || *e != '\0' )
+ errx(1, "invalid type '%s'", s);
+ }
+
+ if ( argc == 4 )
+ {
+ s = e = argv[3];
+ instance = strtol(s, &e, 0);
+
+ if ( *s == '\0' || *e != '\0' )
+ errx(1, "invalid instance '%s'", s);
+ }
+
+ xch = xc_interface_open(0, 0, 0);
+ if ( !xch )
+ err(1, "can't open libxc handle");
+
+ rc = xc_domain_get_context(xch, domid, NULL, &len);
+ if ( rc < 0 )
+ err(1, "can't get context length for dom %lu", domid);
+
+ buf = malloc(len);
+ if ( !buf )
+ err(1, "can't allocate %lu bytes", len);
+
+ rc = xc_domain_get_context(xch, domid, buf, &len);
+ if ( rc < 0 )
+ err(1, "can't get context for dom %lu", domid);
+
+ off = 0;
+
+ entry = 0;
+ for ( ;; )
+ {
+ struct domain_context_record *rec;
+
+ GET_PTR(rec);
+
+ off += sizeof(*rec);
+
+ if ( (type < 0 || type == rec->type) &&
+ (instance < 0 || instance == rec->instance) )
+ {
+ printf("[%u] type: %u instance: %u length: %"PRIu64"\n", entry++,
+ rec->type, rec->instance, rec->length);
+
+ switch (rec->type)
+ {
+ case DOMAIN_CONTEXT_START: dump_start(); break;
+ case DOMAIN_CONTEXT_END: dump_end(); break;
+ default:
+ printf("Unknown type %u: skipping\n", rec->type);
+ break;
+ }
+ }
+
+ if ( rec->type == DOMAIN_CONTEXT_END )
+ break;
+
+ off += ROUNDUP(rec->length, _DOMAIN_CONTEXT_RECORD_ALIGN);
+ }
+
+ return 0;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */