anyone answer this question?
Rc run commands ;-)
Giacomo
diffs the changed files.
> git/merge: Yup, what it says on the label. Should
> also be a script around git/fs.
> git/log:Need to figure out how to make it filter
> by files.
> /n/git/HEAD:add /n/git/head subtree which points
> to the current commit.
>
>...And a whole bunch more.
Impressive!
I didn't imagine one could implement git in so few lines of C! Thanks for
challenging my assumptions!
I'd like to port it to Jehanne but I cannot find a license in the repository,
so in theory it's "all rights reserved" under most jurisdictions.
What's your take on this?
Did you intend to put it under public domain instead? Maybe MIT? Or LPL?
Giacomo
On April 3, 2019 4:02:49 PM UTC, o...@eigenstate.org wrote:
>Don't particularly care. At some point I'd like to commit it to 9front,
>but I can relicense it then.
>
>Do you have a preference?
Probably MIT or a BSD.
But I can also live with any copyleft of your choice.
Giacomo
> virtualization is fine. But my recommendation is that you use lguest
> or kvm -- not xen. Xen is painful to set up and run.
>
> ron
Any problem with intel x86_64?
I knew lguest could guest linux only!
Giacomo
g with the
glenda user.
BUT, after the rio start I got the attached error.
I'll use QEMU as I read it should work, but I hope this feedback could help.
Giacomo
<>
lar procedure worked on QEMU, but it's by far slower.
If you managed to get a Plan9 working Microsoft Virtual PC please tell me
the procedure you used, the hd settings, the partitions and how you
configured the mbr...
Thanks a lot!
Giacomo
On Fri, Jan 29, 2010 at 4:46 PM, Patrick Kel
read (obviously I'm just talking about single files, not directory).
When I should clunk the afid?
What about encryption? Is it completely delegated to the transport layer?
Thanks for your help!
Giacomo
Il 29/Gen/2015 11:12 "Charles Forsyth" ha
scritto:
>
>
> On 29 January 2015 at 09:04, Giacomo Tesio wrote:
>>
>> What's the meaning of qids? I see that responses often include them but
request messages do not.
>
> see intro(5) or intro(9P) depe
Actually I wasn't able to understand when the afid was supposed to be clunk
reading attach 5.
I was in doubt that the afid had to be the last fid clunked.
Giacomo
Il 29/Gen/2015 15:56 ha scritto:
> size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s]
> size
usly I'm not referring to Plan 9 file servers (I guess this would be a
non retrocompatbile change), but I'm considering if such interpretation
would be wrong (according to the official specifications).
A server supporting such behaviour could be considered a 9p2000 conformant
server?
Giacomo
this could be a typo in the intro(5) man
page, or in my understanding of its phrasing.
Still, using this protocol "feature" to enable atomic directory change
could be useful in my use cases, but I don't want to build yet another
9p2000 extension.
Giacomo
2015-01-30 15:13 GMT+0
kind of operations?
Thanks for your patience... :-)
Giacomo
2015-01-30 23:49 GMT+01:00 Anthony Sorace :
>
> > On Jan 30, 2015, at 10:59 , Giacomo Tesio wrote:
> >
> > It surely would not be conformant to Plan 9 systems, but to the protocol?
>
> No. Joel has it rig
tions that I saw were synchronous, allowing only one
client per connection.
Where can I find an implementation of these features?
I guess it would be a really instructive read.
Giacomo
requires delving into the namespace to tell that the directories are
> still under the
> same mount, and some non-uniform operations.
>
Good point. But thus, what are the alternatives?
Giacomo
structure at the end of a directory entry.
However this solution probably has not been adopted to enable safe
concurrency in the file creation and removal.
However this asymmetry shows that directories cannot be (pratically)
handled in the same way of files.
Giacomo
2015-02-04 15:06 GMT+01:00 erik
ge real files is not my actual issue here. I'm wondering for a
synthetic filesystem in which, when you move a folder in a special
directory, something magic happens.
As far as I can see, it is not possible with a 9p2000 fileservice, is it?
Giacomo
2015-02-04 20:23 GMT+01:00 erik quanstrom :
2015-02-05 5:26 GMT+01:00 :
> > But why we don't have Tmove for example?
>
> http://9front.org/img/tmove.jpg
>
>
ROFTL! :-D
transfers your
> entire disk contents to the cloud: would you like it to be perceived
> as trivial? What happens if you interrupt it? Worse, what happens if
> you can't interrupt it?
I won't be drammatic: you can always unplug the enthernet! :-D
Btw, I see the point.
Giacomo
about the arguments that lead to such decision?
Giacomo
2015-02-05 9:21 GMT+01:00 Giacomo Tesio :
> 2015-02-05 5:13 GMT+01:00 :
>>
>> > But why we don't have Tmove for example?
>>
>> Because its semantics are much, much more complex and the users need
>> to
e, is
it?
>
> i don't see why you can't make a magic directory that works that way.
>
How? Which 9p message would trigger the magic?
I just see 2 options:
1. Have a control file
2. Use custom wstat with full path to move
But if both are wrong, I'm lost.
Giacomo
lly forge an http request.
However I can't understand hot to specify a port reading man telnet.
What's plan9 equivalent of
telnet www.google.com 80
Giacomo
Yes hget is an rc script running on webfs.
Giacomo
Il 12/Feb/2015 13:14 "Quintile" ha scritto:
> I have s feeling that get is a script that accesses webfs, and maybe the
> 9front mothers does the same. are you running webfs?
>
> -Steve
>
>
>
>
>
> &
host in /usr/glenda/.hgrc).
Giacomo
2015-02-12 17:27 GMT+01:00 :
> the httpproxy variable is read by webfs on startup only. webfs is usually
> started in your $home/lib/profile to provide http client service.
>
> just setting httpproxy before running hget or mothra has no
> effect
I'll find my way to acme and plan9 I'll send you a patch...
Thanks you all for your help!
Giacomo
2015-02-13 10:11 GMT+01:00 :
> heres how it should look like (tuttle.9hal: is my proxy servr):
>
> term% httpproxy=http://tuttle.9hal: webfs -d; hget http://goo
Once it works, you can add it at the beginning of your lib/profile.
Note that, strangely enough, hg ignores the .hgrc in your home directory.
The hgrc(8) speak about Unix (and Windows) but since GNU is Not U...
ehm... Plan9 is not Unix (:-D), I can't say where to write it.
Giacomo
2015-0
.
I noted that all files in http://9front.org/pkg/386/ are tbz.
I'd like to know if (and how) I could install the tar.gz and tar.bz2
packages from that repo or I have to manually download them, repackage
as with pkg/create and then install from a local pkgpath.
Thanks for your help!
Giacomo
So have I any hope to compile them?
Giacomo
2015-02-19 12:24 GMT+01:00 Álvaro Jurado :
> I don't think it can work with pkg.
> Note that it isn't a "repo" and has only 72 KB/s max uploading rate. So it
> means that will be very slow and
> none of that packages w
Ops. Sorry I thought I was writing to 9front.
Thanks for your help!
Giacomo
Il 19/Feb/2015 12:49 "Álvaro Jurado" ha scritto:
> First, you need a gcc to compile gcc. There is a complete set here
> <https://drive.google.com/folderview?id=0B6YNt0aHfaA0am1oNGNSR3pXU1U&us
Hi, I'm a bit dumb, but reading rc(1) I can't grasp how I can have the
current dir printed in prompt.
Is it possible at all?
Giacomo
Ops... Thanks! :-)
Giacomo
2015-02-26 11:08 GMT+01:00 Álvaro Jurado :
> http://www.plan9.bell-labs.com/wiki/plan9/Tip_o%27_the_day/index.html
>
> "To set your prompt in rc to reflect your current directory add this to your
> profile" part.
>
> Álvaro Jurado Cuevas
&
impler solution? Buying a three-button mouse is quite
hard in Italy, and above all its usage is not viable on my couch...
:-)
Thanks for your help!
Giacomo
Thanks a lot! :-D
Giacomo
2015-03-02 11:55 GMT+01:00 yy :
> On 2 March 2015 at 11:06, Giacomo Tesio wrote:
>> - where I can find the most updated sources of drawterm? (links from
>> http://swtch.com/drawterm/ seem to be broken)
>
> https://bitbucket.org/rsc/drawterm
>
&
ource (why the hell we still use troff for manual pages?
:-D) I can see no command that explain this behaviour.
Any tip to fix them?
Giacomo
[image: Immagine in linea 1]
ve to inform troff about the glyphs sizes... but how?
Giacomo
2015-03-04 17:13 GMT+01:00 Giacomo Tesio :
> Hi, I've just installed a compact sans font (from
> http://input.fontbureau.com/ ) and manual pages started to look broken.
>
> As you can see in the screenshot (man 2 con
Well... docx, obviously! :-D
Seriously, a markdown/asciidoc like language would be far easier to
write and update.
We could even compile it to troff, we we had to print it.
However, this is not a rant specific to plan9. Linux is not better
from this point of view.
Giacomo
2015-03-04 22:31 GMT
Well, while a bit offtopic... what do you mean by "programmatically".
And btw, programs don't write man pages... yet.
Giacomo
2015-03-04 23:39 GMT+01:00 Stanley Lieber :
> troff is great. easy to maintain programmatically.
>
> sl
>
age can be generated
from code. They are a specialized kind of prose.
What I can't undestand I why we still need troff for them.
It's almost like using a teletype to chat! :-)
Giacomo
could be due to troff assuming fixed with font and inserting spaces
instead of tabs. And its a pity, because probably libframe would align
tabs properly.
But this is just a guess, I had no time to check the troff code for this
second issue.
Giacomo
Il 05/Mar/2015 15:23 "erik quanstrom"
amp;& *(p-2) == ' ') {
This is a better fix that redefining col in /rc/bin/man since this way col
correctly replace spaces with tabs when appropriate. It just stops to
replace single spaces at positions multiple of 8 with tabs.
Giacomo
PS: col.c ignores $tabstop. This could be some
n use a 3 column acme to browse
/sys/src/ && read the code && browse man pages.
This should also reduce the man output size more than col.
Giacomo
2015-03-06 17:33 GMT+01:00 erik quanstrom :
> On Fri Mar 6 04:57:18 PST 2015, giac...@tesio.it wrote:
>
> > if ((++
ehm... well... actually I could try with vnc... :-)
Giacomo
2015-03-06 18:22 GMT+01:00 Giacomo Tesio :
> Actually I'm using drawterm, as a sort of remote desktop connection. But I
> can't see the problem you are talking about.
> The clients (either windows or linux)
Ehm... obviously I was talking about 2c(1)...
Too much coffe, today... :-D
2015-03-10 16:53 GMT+01:00 Giacomo Tesio :
> 2c(2) states:
>
> Array initializers can specify the indices of the array in
>> square brackets, as
>> int a[] = { [3] 1, [10] 5 };
>>
should have
index 2 and 9. Moreover if the tenth element is actually referred by index
10, why the array should hold eleven elements?
A simple check shows that actually the array has 11 elements and the one
initialized are the forth and the eleventh.
Giacomo
diff -r 51285ae4f545 sys/man/1/2c
--- a/
ay to cope with such old and small bugs,
is to report them on 9fans (and other related mailing lists), possibly with
a patch.
This way, any other user that hit the bug (and find your email) can apply
the patch and fix them in his $home/bin (or somewhere else) and then bind
-b it to /bin.
Giacomo
dHat or Suse.
In the Plan9 ecosystem, while looks that some are quite upsets about such
differences, it's hard to grasp them from the outside.
Giacomo
chive?
Giacomo
Thanks David!
2015-03-25 12:12 GMT+01:00 David du Colombier <0in...@gmail.com>:
> > How should I extract files from an .arch archive?
>
> disk/mkext -d / < cpython-src.arch
>
> --
> David du Colombier
>
>
good to keep track of the progress of the project.
My two cents.
Giacomo
2015-03-28 15:00 GMT+01:00 Paul Lalonde :
> I'd like to hear it too - much to learn from others' process.
> Paul
>
> On Sat, Mar 28, 2015 at 4:16 AM Charles Forsyth
> wrote:
>
>>
quot;workedhere", "shittorefactortomorrow" and so on).
Giacomo
2015-03-30 11:48 GMT+02:00 Giacomo Tesio :
> As I use both git and hg, I really miss the feature-branching in hg
> (obviously, you can, if you try hard enough, use feature branching with hg
> too, but git makes it so
ement a native gitfs over that, in C, using the
network fs available in Plan9.
Compared to hgfs, a bit more design of the fs structure would probably be
needed to capture the concept of branch in a hierarchical filesystem.
How much you would estimate such development?
Giacomo
2015-03-30 18:1
watch?v=qlRTbl_IB-s (and this site
http://2045.com/ !)
I've just found it, and suddenly I realized that all the crazy ideas I've
got in the past were quite realistic, after all. :-D
Giacomo
Il 27/Lug/2015 23:47, "Skip Tavakkolian" <9...@9netics.com> ha scritto:
>
> > you are aware of the 9fans' fetish for movies
>
> and rabbits
...and feticists. ;-)
plan9/blob/master/sys/src/cmd/ip/ftpfs/ftpfs.c#L273-L279
I'm a bit confused about this. What's the proper use of the 0 return value?
Giacomo
2015-08-10 16:22 GMT+02:00 erik quanstrom :
> on plan 9 systems 0 writes are not discarded.
>
Interesting! Is this "by design"?
And what is the intended usage of 0 writes?
BTW, so fcall(2) is misleading, a 0 read can not be used to identify an
EOF, right?
Giacomo
;I'm alive but boring".
I can't see how a reliable communication (a cpu connection for example) can
survive this mismatch.
I'm probably missing something.
Giacomo
2015-08-11 17:48 GMT+02:00 Charles Forsyth :
>
> On 10 August 2015 at 15:11, Giacomo Tesio wrote:
>
>> /*
>> * reading from a pipe or a network device
>> * will give an error after a few eof reads.
>> * however, we cannot tell the difference
>> * betw
rsyth :
> As a further historical note, originally 9P required a stream that
> preseved record boundaries, and the reliable datagram protocol IL/IP and
> pipes did that.
>
So, seem that ignoring zeros is simply wrong. A residual from the past...
Giacomo
2008-12-16 23:16 GMT+01:00 Steve Simon :
> I have a distant memory that somone implemented some of POSIX pthreads
> on plan9, i.e. I want to compile programs that use pthreads under APE.
>
> anyone got any pointers?
>
Hi Steve, did you find anything (even incomplete) back then?
Giacomo
Hi, anybody knows where the u9fs sources are currently maintained?
I have just found https://bitbucket.org/plan9-from-bell-labs/u9fs but it's
only linked by an old googlecode repo: I was unable to find any official
link in the bell labs pages.
Giacomo
ment and testing.
>
> Lucio.
>
I shouldn't need any hardware (a Xen domU should be enough), but in case
I'll write you when I'm ready to work on this.
Can you share links to the most updated sources for NetBSD?
Giacomo
p == nil) just after rfork, and after a
few (apparently?) successful spawns, the assert fails.
What I need is a sort of thread-local storage for the MyStruct*, so that
each child process can find it's own dedicated MyStruct.
I know that could get this with an hashtable based on the pid, but I'd
prefer to avoid the book keeping if possible.
Giacomo
... and given getpid(2) implementation, a pid based table could be quite
expensive, since MyStruct is accessed very very often.
2015-09-05 16:03 GMT+02:00 Giacomo Tesio :
> 2011-05-20 3:30 GMT+02:00 erik quanstrom :
>
>> one note is that while i'm aware of privalloc(2), i di
Nice example thanks.
May be my problem is that p is global in my case?
Giacomo
Il 05/Set/2015 18:50, "erik quanstrom" ha scritto:
> by the way, the following program runs without asserting for me
> with or without the waits.
>
> - erik
>
> ---
>
> #include
&g
ctly what happened.
I misread privalloc(2), and assumed that privalloc()ed addresses were
somehow reset on rfork.
This is probably something to explicitly state the man page.
Thanks you all!
Giacomo
ar effect as fsync (see stat(5)).
>
Thus Plan9 HAS fsync! :-o
And it also has server-defined semantics! Very impressive!
Giacomo
pile many
different language optimized for many different OS and architectures on
many different OS and architecture.
Alternative compilers, like tcc, only build C on very few architectures /
os with almost no optimization: they are much smaller, but still not
standard compliant.
How can it be?
Giacomo
2015-11-27 13:42 GMT+01:00 :
> On Fri, Nov 27, 2015 at 09:13:20AM +0100, Giacomo Tesio wrote:
> >
> > I know nothing about compilers, but actually gcc and clang dimension and
> > complexity is astonishing.
>
> It's not astonishing: it's research. They want to
t is actually deprecated.
Do you know any paper that can explain its design and intent?
Giacomo
should be equivalent to
.align 4
.globl insb
insb:
mov%ebp,%edx
mov0x10(%rsp),%rdi
mov0x18(%rsp),%ecx
cld
rep insb
retq
Again I cannot find a definition of address and count, but both seem to be
be valued as 8, why?
Giacomo
umentation/abi.pdf and always pushes
parameters to the stack?
Giacomo
2016-02-01 23:48 GMT+01:00 :
> FP is a translated to a varying offset to SP depending on where in the
> program
> you are. arguments on the stack are padded to 8 bytes on amd64, the first
> argument
> is n
I kinda agree, but I'm too incompetent in the matter. :-)
However, I was simply asking if, on amd64, kencc uses the 6 registers that
the abi deserves to the parameters.
As far as I've understood only BP is used (for the first argument, if
integer).
Can you confirm?
Giacomo
2016-
Out of curiosity, why the startboot function in port/initcode.c is `void
startboot(char *argv0, char **argv)` given the argv0 is ignored?
I see that this simplify various main() in init9.s but I wonder why not
simply use `void startboot(char **argv)`
Giacomo
iven
their use of rendezvous I can't find anything related.
Can you provide me some references?
Giacomo
Thanks Charles!
Giacomo
2016-03-25 17:38 GMT+01:00 Charles Forsyth :
> If you look for "condition variables" for event notification,
> you'll find relevant material, such as this paper
> https://www.cs.berkeley.edu/~brewer/cs262/Mesa.pdf
> which has a few references
ent, now we can even start to ignore the information from the
physical world, while accepting the virtual information that someone else
feed us.
Giacomo
2016-04-01 22:00 GMT+02:00 :
> lu...@proxima.alt.za writes:
>
> > I don't even remember the name of the feature, but I used a tool
e challenging mainstream opinions (this is Plan9,
isn't it? :-D), I'm afraid of people doubting about evident facts or simply
ignoring them: climatic changes? unsustainable distribution of wealth?
parents negating their kids misbehavior? inadequate legal systems for the
current world? and so on...
Giacomo
entirely off topic, sorry
reate(2)
syscall?
Giacomo
Hi, I'm looking for an usage example of devsegment.
I cannot find anything neither in bhro's plan9 nor in 9front.
Can anybody share a real usage world example?
Giacomo
is it designed to solve?
Moreover, Zinq's graphics use a very smart approach, but it's specific to
9front evolution of the device with the "fixed" type.
I'm also looking for the general use case, when segments are not used for
DMA, as designed in the original Plan9.
Giaco
e create syscall does not simply return an
error if the file already exists?
You might save me a few headache...
Thanks for your help!
Giacomo
2016-05-24 23:25 GMT+02:00 Giacomo Tesio :
> I'm pretty curious about the create(2)/create(5) race described in a
> comment in namec (see h
(file, mode|OTRUNC)) < 0 ||
> (fd = create(file, mode, perm)) < 0 ||
> (fd = open(file, mode|OTRUNC)) < 0 ||
> error...
> }
>
> This is precisely the current create(2) call and the nasty
> race is clear.
>
>
Why the initial open() would be needed if c
2016-11-30 16:08 GMT+01:00 Charles Forsyth :
>
> On 30 November 2016 at 15:02, Giacomo Tesio wrote:
>
>>
>> But reading that thread I can't actually see why the OEXCL path has been
>> taken instead of eliminating the race mapping the syscall to the 9p me
arles perfectly described them, something that break without it, so that
I can dive deeper into the matter.
Giacomo
Thanks Charles! This is exactly the kind of info I was looking for.
Giacomo
2016-11-30 22:53 GMT+01:00 Charles Forsyth :
>
> On 30 November 2016 at 21:51, Charles Forsyth
> wrote:
>
>> that the whole path name is re-evaluated 3 times
>
>
> That doesn't happen
help.
Thanks.
Giacomo
2017-01-06 10:34 GMT+01:00 Anthony Martin :
> Ciao Giacomo,
>
Ciao Anthony, ottime domande! :-)
Let's start from the easy ones:
> Oh, and where are the man pages? /doc/hacking is missing.
Man pages in Jehanne will be readable in source form. Cat should be enough
to render th
code compiled and runs on 9front. I generated the c
> code on linux though.
>
Can you detail the process?
I'd like to give it a try on Jehanne (which is built with gcc).
Giacomo
verified that the code is more or less the same on 9front.
I "fixed" the first with an assert, but I'm not sure wherther passing
sizeof(m->u.finished.verify) to memset in the second is the correct
solution.
Am I missing something?
Giacomo
stop to annoy the list.
Giacomo
simple reasoning I did during triage was: consider a pointer to a
struct holding both buf and its length:
mptole(num, s->buf, s->len, nil)
it will cause the leak if the struct was just zeroed.
In this case I prefer the assert fail to the leak, so that I, as a dumb
guy, would notice the issue
< ep; p++)
if(*p == '\0')
*p = ' ';
ans[s] = '\0';
}
Anybody know why this replacement is done?
It does not seem a good fix to read/write or read/truncate races, but
I can't find a better explanation.
Giacomo
Yes that would be a plausible explanation but actually rc does not use
getenv: it reads /env/ files directly.
I've tried to remove the loop and I can't see any issue.
Giacomo
2017-01-18 21:13 GMT+01:00 Charles Forsyth :
> Yes, it's the lists. Nothing will cope with \0 in a C
cation actually using such semantics
(either ported to Plan9 or not).
Giacomo
You might find https://lsub.org/ls/clive.html interesting.
Giacomo
2017-05-05 15:25 GMT+02:00 Dave MacFarlane :
> On Fri, May 5, 2017 at 6:21 AM, Stanley Lieber wrote:
>>
>> Plan 9 has not yet been re-implemented in Go.
>>
>> sl
>>
>
> I started trying to
I agree that in a network, several different os should be able to work
together seemlessy.
But despite my efforts in Jehanne I don't think the key to achieve this is
a os, nor a language. IMHO the key is a better general purpose protocol, as
simple as 9p but able to replace http.
Giacomo
Hi, to write a test I'm looking for an easy way to have a write()
blocking forever.
Is there any fs/device in Plan9 that can easily provide such behaviour?
Giacomo
Thanks Charles!
Giacomo
2017-05-15 12:32 GMT+02:00 Charles Forsyth :
>
> On 15 May 2017 at 11:05, Giacomo Tesio wrote:
>>
>> Is there any fs/device in Plan9 that can easily provide such behaviour?
>
>
> Bind #| to a name and fill up one of the data files (blocks at
open, and still works, as you can see in
the attached test.
Shouldn't the waserror code check that the queue has been actually closed?
Giacomo
2017-05-15 15:36 GMT+02:00 Giacomo Tesio :
> Thanks Charles!
>
>
> Giacomo
>
> 2017-05-15 12:32 GMT+02:00 Charles Forsyth :
>&g
Actually a --fu variable is not that useful in Plan 9:
% --fu=bar
% echo $--fu
rc: null list in concatenation
% echo "$--fu"
rc: null list in concatenation
% ls /env
'/env/*'
/env/--fu
...
So rc can create a variable starting with more than one '-', but can't use
it.
So I wonder if there is a de
r than the loss.
Am I missing an obvious use case? Or maybe the changes to rc's code would
be too complex?
Giacomo
Il 15/Mag/2017 18:39, "Charles Forsyth" ha
scritto:
>
> On 15 May 2017 at 17:30, Giacomo Tesio wrote:
>
>> % echo "$--fu"
>> rc: nu
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