On 1/13/16 8:52 AM, Ludovic Courtès wrote:
> Greg Wooledge <[email protected]> skribis:
>
>> On Wed, Jan 13, 2016 at 11:25:03AM +0100, Ludovic Courtès wrote:
>>> Hello,
>>>
>>> The ???READ_SAMPLE_BUF??? macro in execute_cmd.c reads at most 80 bytes from
>>> the hash-bang line. This is less than the already-small 128-byte limit
>>> in the Linux kernel¹ and can quite easily be hit².
>>
>> That's actually much bigger than one expects for shebang handling on
>> any traditional Unix system.
>
> Sure, but the fact that it’s smaller than that of the kernel Linux is
> problematic: when a hash-bang line > 127 chars is encountered, ‘execve’
> fails with ENOENT, so Bash’s fallback code is executed, fails as well,
No. Since the execve fails with ENOENT, bash just prints an error
message.
> but it prints a misleading error message with an even more truncated
> hash-bang line.
Again, it's only a cosmetic issue. I don't have a problem with increasing
the buffer size, but let's not pretend it's anything but that.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
