Re: [RFH/PATCH] prefix_path(): disallow absolute paths

[Junio C Hamano <gitster@pobox.com>]

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

>> This is not to be applied (especially before auditing the callers), but 
>> to be thought about.  Although it passes all the tests...
>
> It certainly is tempting.
>
>
>> +			while (c == '/')
>> +				c = *src++;
>> +			src--;
>
> This is ugly.  I would like this better:
>
> 			while (src[1] == '/')
> 				src++;

Whatever.  That was just for discussion.

>> +const char *prefix_path(const char *prefix, int len, const char *path)
>> +{
>> +	const char *orig = path;
>> +	char *sanitized = xmalloc(len + strlen(path) + 1);
>
> There _has_ to be a way to avoid malloc()ing things that will _never_ be 
> free()d again with every second patch ;-)

Huh?  prefix_path() already allocates for rewritten pathspec
entries; this is nothing new.