This patch add one return value check for lssubsys
Signed-off-by: Ivana Hutarova Varekova <[email protected]>
---
src/tools/lssubsys.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/src/tools/lssubsys.c b/src/tools/lssubsys.c
index 89d0229..e48daa6 100644
--- a/src/tools/lssubsys.c
+++ b/src/tools/lssubsys.c
@@ -195,6 +195,11 @@ static int print_all_controllers_in_hierarchy(const char
*tname,
}
ret = cgroup_get_all_controller_begin(&handle, &info);
+ if ((ret != 0) && (ret != ECGEOF)) {
+ fprintf(stderr, "cannot read controller data: %s\n",
+ cgroup_strerror(ret));
+ return ret;
+ }
while (ret != ECGEOF) {
/* controller is in the hierrachy */
------------------------------------------------------------------------------
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