patches/kmod/kmod.patch

   1 remove non-portable usage of strndupa
   2
   3 usage of strndupa is neither C99 nor POSIX,
   4 it's a glibc invention, and a dangerous one since
   5 alloca() is used behind the scenes which does not
   6 give any guarantuees that it won't overflow the
   7 stack.
   8
   9 --- kmod-15.org/libkmod/libkmod-util.c  2013-08-26 16:03:22.239000003 +0000
  10 +++ kmod-15/libkmod/libkmod-util.c      2013-08-26 16:07:26.684000003 +0000
  11 @@ -28,6 +28,7 @@
  12  #include <unistd.h>
  13  #include <errno.h>
  14  #include <string.h>
  15 +#include <limits.h>
  16  #include <ctype.h>
  17
  18  #include "libkmod.h"
  19 @@ -323,8 +324,11 @@
  20  int mkdir_p(const char *path, int len, mode_t mode)
  21  {
  22         char *start, *end;
  23 -
  24 -       start = strndupa(path, len);
  25 +       char buf[PATH_MAX+1];
  26 +       snprintf(buf, sizeof buf, "%s", path);
  27 +       assert(len < sizeof(buf));
  28 +       buf[len] = 0;
  29 +       start = buf;
  30         end = start + len;
  31
  32         /*