This is not the point.
4/27/03 11:42:15 PM, Werner Almesberger <wa@almesberger.net> wrote:
>Mark Grosberg wrote:
>> fmap[0] = in[0]; /* STDIN */
>> fmap[1] = out[1]; /* STDOUT */
>> fmap[2] = open("/dev/null", O_RDWR); /* STDERR */
>> fmap[3] = -1; /* end */
>>
>> p = nexec("/bin/cat",
>> null_argv,
>> NULL,
>> filmap);
>
>How about
>
> fdrplc(3,fmap);
> exec("/bin/cat",...);
>
>?
>
>0) System call names must be short and cryptic :-)
>1) Requiring the kernel to iterate over the array element by element
> in order to find out how big it is may be inefficient. Better to
> pass the length.
>2) System call overhead is marginal, particularly in this case.
>3) There may be other uses than exec(2), where a way for closeing
> all fds and getting a new set may be useful.
>
>- Werner
>
>--
> _________________________________________________________________________
> / Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net /
>/_http://www.almesberger.net/____________________________________________/
>-
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>
Rafael Costa dos Santos
ThinkFreak Comércio e Soluções em Hardware e Software
Rio de Janeiro / RJ / Brazil
rafael@thinkfreak.com.br
+ 55 21 9432-9266
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This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:28 EST