package/kernel/mac80211/patches/011-backport_strscpy.patch

   1 --- a/backport-include/linux/string.h
   2 +++ b/backport-include/linux/string.h
   3 @@ -25,4 +25,8 @@ extern void *memdup_user_nul(const void
   4  void memzero_explicit(void *s, size_t count);
   5  #endif
   6
   7 +#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,3,0))
   8 +ssize_t strscpy(char *dest, const char *src, size_t count);
   9 +#endif
  10 +
  11  #endif /* __BACKPORT_LINUX_STRING_H */
  12 --- a/compat/backport-4.3.c
  13 +++ b/compat/backport-4.3.c
  14 @@ -57,3 +57,29 @@ void seq_hex_dump(struct seq_file *m, co
  15         }
  16  }
  17  EXPORT_SYMBOL_GPL(seq_hex_dump);
  18 +
  19 +ssize_t strscpy(char *dest, const char *src, size_t count)
  20 +{
  21 +       long res = 0;
  22 +
  23 +       if (count == 0)
  24 +               return -E2BIG;
  25 +
  26 +       while (count) {
  27 +               char c;
  28 +
  29 +               c = src[res];
  30 +               dest[res] = c;
  31 +               if (!c)
  32 +                       return res;
  33 +               res++;
  34 +               count--;
  35 +       }
  36 +
  37 +       /* Hit buffer length without finding a NUL; force NUL-termination. */
  38 +       if (res)
  39 +               dest[res-1] = '\0';
  40 +
  41 +       return -E2BIG;
  42 +}
  43 +EXPORT_SYMBOL_GPL(strscpy);