On Fri, 31 May 2013 09:18:07 -0700 Kees Cook <keescook@xxxxxxxxxxxx> wrote: > Fix various weird constructions of strncpy(dst, src, strlen(src)). Length > limits should be about the space available in the destination, not > repurposed as a method to either always include or always exclude > a trailing NULL byte. Either the NULL should always be copied > (using strlcpy), or it should not be copied (using something like > memcpy). Readable code should not depend on the weird behavior of strncpy > when it hits the length limit. Better to avoid the anti-pattern entirely. > > ... > > --- a/Documentation/accounting/getdelays.c > +++ b/Documentation/accounting/getdelays.c > @@ -23,6 +23,7 @@ > #include <sys/socket.h> > #include <sys/wait.h> > #include <signal.h> > +#include <bsd/string.h> > > #include <linux/genetlink.h> > #include <linux/taskstats.h> > @@ -299,7 +300,7 @@ int main(int argc, char *argv[]) > break; > case 'C': > containerset = 1; > - strncpy(containerpath, optarg, strlen(optarg) + 1); > + strlcpy(containerpath, optarg, sizeof(containerpath)); > break; > case 'w': > logfile = strdup(optarg); Documentation/accounting/getdelays.c:26:24: fatal error: bsd/string.h: No such file or directory I'll revert this part. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
