fix cgroup_get_value_string problem with *.stat output

fix cgroup_get_value_string problem with *.stat output
the problem was in the low limit for value for the output of stat variables - now there are used the functions cgroup_read_stats_{begin/next/end} for this purpose

bogus output:
./src/tools/cgget -r memory.stat /
/:
memory.stat=cache 1024561152
rss 291270656
pgpgin 1209259
pgpgout 888011
inactive_anon 8192
active_anon 2976481

fixed output:
$ ./src/tools/cgget -r memory.stat /
/:
memory.stat=cache 1024610304
	rss 291270656
	pgpgin 1209271
	pgpgout 888011
	inactive_anon 8192
	active_anon 297648128
	inactive_file 619126784
	active_file 399073280
	unevictable 24576
	hierarchical_memory_limit 9223372036854775807
	hierarchical_memsw_limit 9223372036854775807
	total_cache 1024610304
	total_rss 291270656
	total_pgpgin 1209271
	total_pgpgout 888011
	total_inactive_anon 8192
	total_active_anon 297648128
	total_inactive_file 619126784
	total_active_file 399073280
	total_unevictable 24576

Signed-off-by: Ivana Hutarova Varekova <varekova@redhat.com>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>

2 files changed, 23 insertions, 1 deletions

diff --git a/include/libcgroup.h b/include/libcgroup.h
index ce75d2e..c8f1240 100644
--- a/include/libcgroup.h
+++ b/include/libcgroup.h
@@ -141,6 +141,7 @@ struct cgroup_file_info {
 
 #define CG_NV_MAX 100
 #define CG_CONTROLLER_MAX 100
+/* this is NOT ENOUGH for stat variables */
 #define CG_VALUE_MAX 100
 /* Max number of mounted hierarchies. Event if one controller is mounted per
  * hier, it can not exceed CG_CONTROLLER_MAX
diff --git a/src/tools/cgget.c b/src/tools/cgget.c
index 4ca064e..f4feb4f 100644
--- a/src/tools/cgget.c
+++ b/src/tools/cgget.c
@@ -43,7 +43,28 @@ int display_one_record(char *name, struct cgroup_controller *group_controller,
 	if (mode & MODE_SHOW_NAMES)
 		printf("%s=", name);
 
-	printf("%s\n", value);
+	if (strcmp(strchr(name, '.')+1, "stat"))
+		printf("%s\n", value);
+
+	else {
+		void *handle;
+		struct cgroup_stat stat;
+
+		cgroup_read_stats_begin(group_controller->name,
+			"/", &handle, &stat);
+		if (ret != 0) {
+			fprintf(stderr, "stats read failed\n");
+			return ret;
+		}
+		printf("%s %s", stat.name, stat.value);
+
+		while ((ret = cgroup_read_stats_next(&handle, &stat)) !=
+				ECGEOF) {
+			printf("\t%s %s", stat.name, stat.value);
+		}
+
+		cgroup_read_stats_end(&handle);
+	}
 
 	free(value);
 	return ret;