Re: [PATCH 2.6]: IPv6: strcpy -> strlcpy

[Ihar 'Philips' Filipau]

Russell King wrote:
> That ends up writing uninitialised kernel data to (unprivileged) user
> space.  So would strcpy() used in that situation.

  I used to use:

   char buf[MAX];
    ...
   buf[MAX-1] = 0; /* zero terminate */
   strncpy(buf, src, MAX-1);

  This is safe regarding both 0 termination and 0 padding rest of string.

--
Ihar 'Philips' Filipau  / with best regards from Saarbruecken.
--                                                           _ _ _
 Because the kernel depends on it existing. "init"          |_|*|_|
 literally _is_ special from a kernel standpoint,           |_|_|*|
 because its' the "reaper of zombies" (and, may I add,      |*|*|*|
 that would be a great name for a rock band).
                                -- Linus Torvalds

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