Fix the following strncpy() string truncation warning:
In function ‘strncpy’,
inlined from ‘print_all_controllers_in_hierarchy’ at lssubsys.c:127:4,
inlined from ‘cgroup_list_all_controllers’ at lssubsys.c:223:9,
inlined from ‘main’ at lssubsys.c:291:8:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: warning:
‘__builtin_strncpy’ output may be truncated copying 4095 bytes from a string of
length 4095 [-Wstringop-truncation]
106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Tom Hromatka <[email protected]>
---
src/tools/lssubsys.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/tools/lssubsys.c b/src/tools/lssubsys.c
index e77859b40e33..a6713b8bf066 100644
--- a/src/tools/lssubsys.c
+++ b/src/tools/lssubsys.c
@@ -125,6 +125,8 @@ static int print_all_controllers_in_hierarchy(const char
*tname,
/* the first controller in the hierarchy */
memset(cont_name, 0, FILENAME_MAX);
strncpy(cont_name, info.name, FILENAME_MAX-1);
+ cont_name[sizeof(cont_name) - 1] = '\0';
+
memset(cont_names, 0, FILENAME_MAX);
strncpy(cont_names, info.name, FILENAME_MAX-1);
first = 0;
--
2.25.1
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