deprecating sprintf(9)

Rink Springer rink at
Wed Sep 8 16:32:14 UTC 2010


On Wed, Sep 08, 2010 at 08:51:57AM -0700, mdf at wrote:
> It seems like a large project, but OTOH sprintf(9) is mighty unsafe in
> the kernel.  It's disapproved of for user-space as being unsafe for
> security reasons as well, but the potential downsides aren't the same,
> and we'll never clean up ports anyways. :-)

Deprecating it may be usable, yet I don't believe we can easily enforce
such a policy [1]. Have you looked at how many (potentially) unsecure
uses there are in the kernel, to give an idea how useful such an effort
would be?

[1] Unless we'd go through things like Visual Studio's
    #define strcpy __strcpy_unsafe_use_string_cb_copy stuff...


Rink P.W. Springer                                -
"The power of accurate observation is commonly
 called cynicism by those who have not got it."
- George Bernard Shaw

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