hlandau

35 ms·

301.
Modifying and running a binary by recompiling a reverse engineered disassembly(devever.net)
74 points by hlandau 6y ago|4 comments
302.
by hlandau 6y ago
Will OpenZFS on Linux ever be integrated with the Linux page cache?
303.
by hlandau 6y ago
I'm a bit confused why pine64 has decided the BL602 should be the target of deblobbing efforts. Surely the ESP32 would be a better, more popular and more available target? (Some background: Most western designs of wireless MCU have a u
304.
by hlandau 6y ago
It really seems to me that archive.org, or some similar organisation, should petition Google to donate their Usenet archive, which they clearly don't care about, to them. Or possibly buy it off them. It's a long shot since it woul
305.
by hlandau 6y ago
I recall reading a series of books long ago called "Hacker's Challenge" which was similar to this, and equally thrilling. Each volume was essentially a set of whodunits - or rather, howdunits - regarding some network compromi
306.
by hlandau 6y ago
https:// is a scheme, not a protocol. In retrospect, it probably should have been called "www://" and "wwws://" rather than http:// and https:// , because a single s
307.
by hlandau 6y ago
>Custom bootloaders are now possible This is interesting; does this mean Apple isn't enabling Intel Boot Guard, relying only on the checks enforced by MacEFIUtil? Fantastic work, by the way.
308.
by hlandau 6y ago
Is this a joke? I feel like this is a parody of AWS, and the notion of using as many AWS services as possible to make something otherwise simple.
309.
by hlandau 6y ago
@cperciva -- I was very surprised to see you not mention bsdiff here as one of your accomplishments. Incidentally, did you ever succeed in freeing the enhanced version of bsdiff from Oxford University? Seems a shame for it to still be going
310.
Serial Attached SCSI (SAS) is a circuit switched computer network(devever.net)
2 points by hlandau 6y ago|0 comments
311.
by hlandau 6y ago
Any chance on board schematics, or even just some basic block diagram of the avionics hardware? It's hard to understand this firmware without having any idea what it ran on.
312.
by hlandau 6y ago
>just to complete the story, SCSI does have ATA command pass through. Very interesting! I just looked it up - it's the ATA PASS-THROUGH command in the SCSI-ATA Translation (SAT) specification. Someone just told me this is apparently
313.
by hlandau 6y ago
Author here. I'm no expert on the problems ACA was intended to solve, but if I understand it correctly, I could see some remaining applications for it. Suppose I schedule 10 commands all at once, with the Ordered task attribute. If the
314.
by hlandau 6y ago
SATA doesn't use the SCSI command set. It's all still ATA, right down to the inability to abort tasks. (But it is common for operating systems, such as FreeBSD, to model all commands internally as SCSI commands and just translate
315.
by hlandau 6y ago
You can tunnel SCSI over PATA/SATA using ATAPI, used for optical drives. That's a bit different from SATA being "SCSI at their core"; the entire point of ATAPI is that ATA isn't SCSI.
316.
USB Mass Storage and USB-Attached SCSI Are Both SCSI(devever.net)
77 points by hlandau 6y ago|39 comments
317.
by hlandau 6y ago
So this basically seems like the AMD equivalent of Intel Boot Guard, except that the keyfusing seems to be done on the CPU, not the PCH. What I'm hearing here is that Dell, HP, etc. are designing their firmware to keyfuse any unfused C
318.
A Brief Introduction to SCSI(devever.net)
2 points by hlandau 6y ago|0 comments
319.
by hlandau 6y ago
A few things. Broadcom is notorious for demanding NDAs for their datasheets, completely pointlessly. I've also heard of companies demanding their parts be redacted on schematics if published, even more ridiculously, though as far as I
320.
by hlandau 6y ago
rpi is one of the most closed SBCs there is. Even basic materials necessary to write OSes and drivers for the device, namely datasheets and register manuals for the SoC have never been published. Unlike every other SBC I'm aware of the
321.
by hlandau 6y ago
Unions are extortion rackets and price fixing cartels. As such, they are not only unethical in themselves and should be illegal, they constitute an attempt to obstruct capitalism. Amusingly, this hypocrisy is literally embedded in US antitr
322.
by hlandau 6y ago
The scale-up chips (used in the E950 and E980 only) aren't the only SMT8 chips. The scale-out chips (Sforza, Monza, LaGrange) can be fused as SMT4 or SMT8, but IBM doesn't appear to sell SMT8-fused chips for other parties. If a gi
323.
China now blocking ESNI-enabled TLS 1.3 connections(theregister.com)
4 points by hlandau 6y ago|0 comments
324.
by hlandau 6y ago
May as well note: SEV relies on AMD-signed vendor firmware blobs. This means that AMD, or anyone who can get their keys, can compromise the security of SEV.
325.
by hlandau 6y ago
Here's an interesting subtlety of modern door handles. Next time you're in a high-rise building, check the door handles on the stairwells. You may find that the movement of the handle on one side of the door is mechanically uncorr
326.
by hlandau 6y ago
To be clear, you're talking about the original POWER ISA. The PowerPC ISA has subsequently been renamed the Power ISA (not to be confused with the POWER ISA). Confusingly, IBM's POWER CPUs (POWER3, POWER4, POWER5, POWER6, POWER7,
327.
by hlandau 6y ago
Yep. This convention also enables the cancellation of a click, which can be useful if you realise your error mid-click. Another piece of software egregious for violating this UI convention is Adobe Reader. I remember upgrading to, IIRC v9?
328.
by hlandau 6y ago
The local part of an email address can also contain spaces if in quotes: "John Smith"@example.com In fact, the local part is a set of elements separated by dots, each of which can be quoted. The following is valid: &quo
329.
by hlandau 7y ago
I remember in the early days of Google, it was a big no-no for sites to serve different content to Google than to actual users. Sites caught doing this would be banned from Google, so SEO advice quickly became widespread: don't do this
330.
by hlandau 7y ago
I distinctly recall cases decades ago (but after the passage of RIPA 2000) of councils trying to use investigatory powers on things like, (I think I'm remembering this right) parents suspected of applying for schools outside their catc

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