unistd fortify macros broken

[Peter S. Mazinger]

On Wed, 10 May 2006, Nitin Gupta wrote:

> When adding -D_FORTIFY_SOURCE=2, the uclibc unistd.h file includes
> bits/unistd.h, which apparently doesn't exist.
> 
> The problem code in unistd.h is here:
> /* Define some macros helping to catch buffer overflows.  */
> #if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
> # include <bits/unistd.h>
> #endif
> 
> One suggestion is there should be a warning in its place if the macros don't actually
> do anything.

If that part of code is in, it does not mean that it will be supported (it 
would need duplicating many of functions that would make uClibc 
much bigger). 
Normally those parts when they are synced from glibc should either be left 
out or should be changed to #if 0 /*earlier used part*/
If you need such functionality, then you should look into libsafe and add 
the "secured" versions for all the functions you want to replace.

Peter

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Peter S. Mazinger <ps dot m at gmx dot net>           ID: 0xA5F059F2
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