[LU-16980] format-truncation errors

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Affects Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Jian Yu
• Reporter: Jian Yu

Description

While building master branch against kernel 6.2.0-26-generic with gcc 12.2.0, the following errors occurred:

liblnetconfig.c: In function 'open_sysfs_file':
liblnetconfig.c:106:49: error: '%s' directive output may be truncated writing up to 127 bytes into a region of size between 1 and 128 [-Werror=format-truncation=]
  106 |         snprintf(filename, sizeof(filename), "%s%s",
      |                                                 ^~

lfs_project.c: In function ‘lfs_project_handle_dir’:
lfs_project.c:324:50: error: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size between 1 and 4095 [-Werror=format-truncation=]
  324 |                 snprintf(fullname, PATH_MAX, "%s/%s", pathname,
      |                                                  ^~

statx.c: In function ‘do_dir_list’:
statx.c:1427:58: error: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size between 1 and 4095 [-Werror=format-truncation=]
 1427 |                         snprintf(fullname, PATH_MAX, "%s/%s",
      |                                                          ^~