[Xen-changelog] * Enable xenstat to use xenstore

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User jeroney@xxxxxxxxxxxxxxxxxxxxx
# Node ID a793b7a53605c8e21901ea9d6c68e085247eb8b7
# Parent  20d1a79ebe31fd1073924ab0c78410ffcd20447b
* Enable xenstat to use xenstore
* Have xentop display names instead of DomIDs
  as requested in Bugzilla#311 filed by Ian

diff -r 20d1a79ebe31 -r a793b7a53605 tools/xenstat/libxenstat/Makefile
--- a/tools/xenstat/libxenstat/Makefile Wed Oct 26 15:59:13 2005
+++ b/tools/xenstat/libxenstat/Makefile Thu Oct 27 09:19:58 2005
@@ -38,13 +38,13 @@
 
 WARN_FLAGS=-Wall -Werror
 
-CFLAGS+=-Isrc -I$(XEN_LIBXC)
+CFLAGS+=-Isrc -I$(XEN_LIBXC) -I$(XEN_XENSTORE)
 LDFLAGS+=-Lsrc
 
 all: $(LIB)
 
 $(LIB): $(OBJECTS)
-       $(AR) rc $@ $^
+       $(AR) rc $@ $^ $(XEN_XENSTORE)/libxenstore.so
        $(RANLIB) $@
 
 $(SHLIB): $(OBJECTS)
diff -r 20d1a79ebe31 -r a793b7a53605 tools/xenstat/libxenstat/src/xenstat.c
--- a/tools/xenstat/libxenstat/src/xenstat.c    Wed Oct 26 15:59:13 2005
+++ b/tools/xenstat/libxenstat/src/xenstat.c    Thu Oct 27 09:19:58 2005
@@ -21,6 +21,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <xen-interface.h>
+#include <xs.h>
 #include "xenstat.h"
 
 /*
@@ -31,6 +32,7 @@
 
 struct xenstat_handle {
        xi_handle *xihandle;
+       struct xs_handle *xshandle; /* xenstore handle */
        int page_size;
        FILE *procnetdev;
        char xen_version[VERSION_SIZE]; /* xen version running on this node */
@@ -49,6 +51,7 @@
 
 struct xenstat_domain {
        unsigned int id;
+       char *name;
        unsigned int state;
        unsigned long long cpu_ns;
        unsigned int num_vcpus;         /* No. vcpus configured for domain */
@@ -110,6 +113,7 @@
 static void xenstat_uninit_vcpus(xenstat_handle * handle);
 static void xenstat_uninit_networks(xenstat_handle * handle);
 static void xenstat_uninit_xen_version(xenstat_handle * handle);
+static char *xenstat_get_domain_name(xenstat_handle * handle, unsigned int 
domain_id);
 
 static xenstat_collector collectors[] = {
        { XENSTAT_VCPU, xenstat_collect_vcpus,
@@ -153,6 +157,13 @@
                return NULL;
        }
 
+       handle->xshandle = xs_daemon_open_readonly(); /* open handle to 
xenstore*/
+       if (handle->xshandle == NULL) {
+               perror("unable to open xenstore\n");
+               free(handle);
+               return NULL;
+       }
+
        return handle;
 }
 
@@ -163,6 +174,7 @@
                for (i = 0; i < NUM_COLLECTORS; i++)
                        collectors[i].uninit(handle);
                xi_uninit(handle->xihandle);
+               xs_daemon_close(handle->xshandle);
                free(handle);
        }
 }
@@ -228,6 +240,7 @@
                for (i = 0; i < new_domains; i++) {
                        /* Fill in domain using domaininfo[i] */
                        domain->id = domaininfo[i].domain;
+                       domain->name = xenstat_get_domain_name(handle, 
domaininfo[i].domain);
                        domain->state = domaininfo[i].flags;
                        domain->cpu_ns = domaininfo[i].cpu_time;
                        domain->num_vcpus = (domaininfo[i].max_vcpu_id+1);
@@ -337,6 +350,12 @@
 unsigned xenstat_domain_id(xenstat_domain * domain)
 {
        return domain->id;
+}
+
+/* Get the domain name for the domain */
+char *xenstat_domain_name(xenstat_domain * domain)
+{
+       return domain->name;
 }
 
 /* Get information about how much CPU time has been used */
@@ -675,3 +694,25 @@
 static void xenstat_uninit_xen_version(xenstat_handle * handle)
 {
 }
+
+static char *xenstat_get_domain_name(xenstat_handle *handle, unsigned int 
domain_id)
+{
+       char path[80];
+       char *name;
+       unsigned int *len;
+       struct xs_transaction_handle *xstranshandle;
+
+       snprintf(path, sizeof(path),"/local/domain/%i/name", domain_id);
+       
+       xstranshandle = xs_transaction_start(handle->xshandle);
+       if (xstranshandle == NULL) {
+               perror("Unable to get transcation handle from xenstore\n");
+               exit(1); /* Change this */
+       }
+
+       name = (char *) xs_read(handle->xshandle, xstranshandle, path, len);
+       
+       xs_transaction_end(handle->xshandle, xstranshandle, false);
+
+       return name;
+}      
diff -r 20d1a79ebe31 -r a793b7a53605 tools/xenstat/libxenstat/src/xenstat.h
--- a/tools/xenstat/libxenstat/src/xenstat.h    Wed Oct 26 15:59:13 2005
+++ b/tools/xenstat/libxenstat/src/xenstat.h    Thu Oct 27 09:19:58 2005
@@ -80,6 +80,9 @@
 /* Get the domain ID for this domain */
 unsigned xenstat_domain_id(xenstat_domain * domain);
 
+/* Set the domain name for the domain */
+char *xenstat_domain_name(xenstat_domain * domain);
+
 /* Get information about how much CPU time has been used */
 unsigned long long xenstat_domain_cpu_ns(xenstat_domain * domain);
 
diff -r 20d1a79ebe31 -r a793b7a53605 tools/xenstat/xentop/Makefile
--- a/tools/xenstat/xentop/Makefile     Wed Oct 26 15:59:13 2005
+++ b/tools/xenstat/xentop/Makefile     Thu Oct 27 09:19:58 2005
@@ -26,7 +26,7 @@
 man1dir=$(mandir)/man1
 sbindir=$(prefix)/sbin
 
-CFLAGS += -DGCC_PRINTF -Wall -Werror -I$(XEN_LIBXENSTAT)
+CFLAGS += -DGCC_PRINTF -Wall -I$(XEN_LIBXENSTAT)
 LDFLAGS += -L$(XEN_LIBXENSTAT)
 LDLIBS += -lxenstat -lncurses
 
diff -r 20d1a79ebe31 -r a793b7a53605 tools/xenstat/xentop/xentop.c
--- a/tools/xenstat/xentop/xentop.c     Wed Oct 26 15:59:13 2005
+++ b/tools/xenstat/xentop/xentop.c     Thu Oct 27 09:19:58 2005
@@ -28,6 +28,7 @@
 #include <time.h>
 #include <unistd.h>
 
+#include <xs.h>
 #include <xenstat.h>
 
 #define XENTOP_VERSION "1.0"
@@ -91,6 +92,8 @@
 static void print_net_rx(xenstat_domain *domain);
 static int compare_ssid(xenstat_domain *domain1, xenstat_domain *domain2);
 static void print_ssid(xenstat_domain *domain);
+static int compare_name(xenstat_domain *domain1, xenstat_domain *domain2);
+static void print_name(xenstat_domain *domain);
 
 /* Section printing functions */
 static void do_summary(void);
@@ -104,6 +107,7 @@
 /* Field types */
 typedef enum field_id {
        FIELD_DOMID,
+       FIELD_NAME,
        FIELD_STATE,
        FIELD_CPU,
        FIELD_CPU_PCT,
@@ -127,7 +131,8 @@
 } field;
 
 field fields[] = {
-       { FIELD_DOMID,   "DOMID",      5, compare_domid,   print_domid   },
+//     { FIELD_DOMID,   "DOMID",      5, compare_domid,   print_domid   },
+       { FIELD_NAME,    "NAME",      10, compare_name,    print_name    },
        { FIELD_STATE,   "STATE",      6, compare_state,   print_state   },
        { FIELD_CPU,     "CPU(sec)",  10, compare_cpu,     print_cpu     },
        { FIELD_CPU_PCT, "CPU(%)",     6, compare_cpu_pct, print_cpu_pct },
@@ -356,6 +361,18 @@
        print("%5u", xenstat_domain_id(domain));
 }
 
+/* Compare domain names, returning -1,0,1 for <,=,> */
+int compare_name(xenstat_domain *domain1, xenstat_domain *domain2)
+{
+       return strcasecmp(xenstat_domain_name(domain1), 
xenstat_domain_name(domain2));
+}
+
+/* Prints domain name */
+void print_name(xenstat_domain *domain)
+{
+       print("%10s", xenstat_domain_name(domain));
+}
+
 struct {
        unsigned int (*get)(xenstat_domain *);
        char ch;

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