rootless: use snprintf
use directly snprintf instead of strlen+strcpy.
@@ -288,6 +288,7 @@ static void __attribute__((constructor)) init()
char *cwd = getcwd (NULL, 0);
char uid_fmt[16];
char gid_fmt[16];
+ size_t len;
if (cwd == NULL)
{
@@ -295,13 +296,13 @@ static void __attribute__((constructor)) init()
_exit (EXIT_FAILURE);
}
- if (strlen (xdg_runtime_dir) >= PATH_MAX - strlen (suffix))
+ len = snprintf (path, PATH_MAX, "%s%s", xdg_runtime_dir, suffix);
+ if (len >= PATH_MAX)
{
fprintf (stderr, "invalid value for XDG_RUNTIME_DIR: %s", strerror (ENAMETOOLONG));
exit (EXIT_FAILURE);
}
- sprintf (path, "%s%s", xdg_runtime_dir, suffix);
fd = open (path, O_RDONLY);
if (fd < 0)
{
