Date: Fri, 06 Sep 2024 01:03:01 +0200 From: Steffen Nurpmeso <steffen@sdaoden.eu> To: ske-89@pkmab.se, freebsd-hackers@freebsd.org Subject: Re: The Case for Rust (in any system) Message-ID: <20240905230301.XxRHheIX@steffen%sdaoden.eu> In-Reply-To: <20240905225129.UvYYMXDa@steffen%sdaoden.eu> References: <202409052313.aa18097@berenice.pkmab.se> <20240905225129.UvYYMXDa@steffen%sdaoden.eu>
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Steffen Nurpmeso wrote in
<20240905225129.UvYYMXDa@steffen%sdaoden.eu>:
...
hihihi saw the Somers .. but wanted to add
|Ie, if you implement some SCSI command
..
| we_parse_THIS_SCSI_COMMAND([.]u8 *buf, u16 len){
|...
| /* C99 */{
| struct a_mmc_cmd_x42_resp_data_head *dhp;
|
|^argument etc of THIS_SCSI_COMMAND
|
| dhp = R(struct a_mmc_cmd_x42_resp_data_head*,buf);
| buf += sizeof(*dhp);
| len -= sizeof(*dhp);
|}
|...
| irp = R(struct a_mmc_cmd_x42_isrc_resp*,buf);
This thing tested the lengths accordingly, of course.
...
|very safely in C, if instead of strnlen() etc something more sane
|would have been used. Like a string object. But it is more
|typing work etc. *That* of course, yes.
Now Option<Box<Vec<u8>>> or Vec::with_capacity(262144) is not that
much shorter than doing something in C proper types at hand
provided. (Btw C object constructors usually initialize their
types, too, .. that is why they are called constructors.
Of course: you need these objects, stdlib has none, but FILE,
which is horrific. Vec<u8>, hmhm...)
..etcetcetc.
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
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