On Thu, Nov 07, 2013 at 17:19, Peter J. Philipp wrote:

>> +       gid = getgid();
>> +
>> +       if (setgroups(1, &gid) == -1)
>> +               err(1, "setgroups");
>> +
>> +       if (setresgid(gid, gid, gid) == -1)
>> +               err(1, "setresgid");
>> +
>>         if (setresuid(uid, uid, uid) == -1)
>>                 err(1, "setresuid");
>>
> 
> 
> I thought about it and thought my patch didn't really do anything.  So

Right. This doesn't do anything. traceroute isn't setgid, it has no
group privileges to revoke.


> /* DiffServ Codepoints and other TOS mappings */
> +       /* KEEP SORTED */
> const struct toskeywords {
> const char      *keyword;
> int              val;
> @@ -1258,14 +1268,13 @@ map_tos(char *s, int *val)
> { NULL,                 -1 },
> };
> 
> -       for (t = toskeywords; t->keyword != NULL; t++) {
> -               if (strcmp(s, t->keyword) == 0) {
> -                       *val = t->val;
> -                       return (1);
> -               }
> -       }
> +       t = bsearch(s, toskeywords, nitems(toskeywords), sizeof(struct
> toskeywords), (int (*)(const void *, const void *))strcmp);

I don't like the way this is abusing types. In fact, I don't think this
even works. Did you test it? A pointer to a struct toskeyword will not
have the same value as the keyword member.

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