On Dec 17 09:32, Andrey Repin wrote:
> Greetings, Ulli Horlacher!
>
> > /dev/shm ist not a tmpfs on cygwin:
>
> Cygwin is a userspace DLL. It is not a filesystem driver.
>
> > /dev/shm: df -TH /dev/shm
> > Filesystem Type Size Used Avail Use% Mounted on
> > C:/cygwin64ntfs 34G 25G
Greetings, Ulli Horlacher!
> /dev/shm ist not a tmpfs on cygwin:
Cygwin is a userspace DLL. It is not a filesystem driver.
> /dev/shm: df -TH /dev/shm
> Filesystem Type Size Used Avail Use% Mounted on
> C:/cygwin64ntfs 34G 25G 9.1G 74% /
> When I write something into this
On Dec 13 10:34, Ulli Horlacher wrote:
> On Fri 2019-12-13 (07:27), Jürgen Wagner wrote:
> > And regarding the tmpfs (RAM disk) , you can use /dev/shm.
> >
> > # date > /dev/shm/key
> > # cat /dev/shm/key
> > Fri Dec 13 07:26:03 CET 2019
>
> /dev/shm ist not a tmpfs on cygwin:
>
> /dev/shm: df
On Fri, 13 Dec 2019 17:57:23 -0500, Erik Soderquist wrote:
I've test all of the suggestions I've seen so far with the exception
of the cygserver and shared memory, and all of the ones I've tested
failed the power failure scenario.
/dev/clipboard?
--
Problem reports:
On Fri, Dec 13, 2019 at 11:20 AM Buchbinder, Barry (NIH/NIAID) [E] via
cygwin wrote:
> One could put a script, batch file, or a link thereto in one's startup
> folder that will run on Windows' boot.
The OP's issue is that the data must be destroyed instantly even in
the event of a power failure.
Ulli Horlacher wrote:
On Fri 2019-12-13 (00:51), Jürgen Wagner wrote:
- Run cygserver-config as an administrator.
~: cygserver-config
Generating /etc/cygserver.conf file
Warning: The following function requires administrator privileges!
Do you want to install cygserver as service?
(Say
>On Thu, Dec 12, 2019 at 5:08 PM Ulli Horlacher wrote:
>
>>Erik Soderquist sent the following at Thursday, December 12, 2019 5:45 pm
>>
>> On Thu 2019-12-12 (21:59), Buchbinder, Barry (NIH/NIAID) [E] via cygwin
>> wrote:
>>>
>>> If the temp file was created by mktemp and the name saved in an
>>>
Am 13.12.2019 um 11:06 schrieb Ulli Horlacher:
On Fri 2019-12-13 (00:51), Jürgen Wagner wrote:
- Run cygserver-config as an administrator.
~: cygserver-config
Generating /etc/cygserver.conf file
Warning: The following function requires administrator privileges!
Do you want to install
On Fri 2019-12-13 (00:51), Jürgen Wagner wrote:
> - Run cygserver-config as an administrator.
~: cygserver-config
Generating /etc/cygserver.conf file
Warning: The following function requires administrator privileges!
Do you want to install cygserver as service?
(Say "no" if it's already
On Fri 2019-12-13 (07:27), Jürgen Wagner wrote:
> And regarding the tmpfs (RAM disk) , you can use /dev/shm.
>
> # date > /dev/shm/key
> # cat /dev/shm/key
> Fri Dec 13 07:26:03 CET 2019
/dev/shm ist not a tmpfs on cygwin:
/dev/shm: df -TH /dev/shm
Filesystem Type Size Used Avail Use%
And regarding the tmpfs (RAM disk) , you can use /dev/shm.
# date > /dev/shm/key
# cat /dev/shm/key
Fri Dec 13 07:26:03 CET 2019
#
It is not advisable to store larger amounts of data there, but an
encryption key should be fine.
Cheers,
--j.
On 13.12.2019 00:21, Ulli Horlacher wrote:
On Fri
Ok, we're getting closer.
- Run cygserver-config as an administrator.
- Do "net start cygserver"
That will provide shared memory capabilities. Then try this:
# shmtool w myFunnyC8380ufsKey
Shared memory segment exists - opening as client
Done...
# shmtool r
Shared memory segment exists -
On Fri 2019-12-13 (00:03), Jürgen Wagner wrote:
> 1. You create a RAM disk
How do I do it with cygwin?
> 2. You encrypt the data with a ephemeral key
This is exactly what I want to share between processes!
--
Ullrich Horlacher Server und Virtualisierung
Rechenzentrum TIK
On Thu 2019-12-12 (17:45), Erik Soderquist wrote:
> This is very hacky, but I believe you can get the effect you want by
> having an admin process auto-start at host startup, identify itself,
> and then set parts of its own /proc/ process ID tree as world
> read/write.
It is not possible to
I can see two options:
1. You create a RAM disk and the contents will obviously be gone when
the system reboots or crashes.
2. You encrypt the data with a ephemeral key that will be lost on reboot
(e.g., kept in shared memory). When the system comes up and finds itself
unable to read the data,
On Thu, Dec 12, 2019 at 5:45 PM Erik Soderquist wrote:
> This is very hacky, but I believe you can get the effect you want by
> having an admin process auto-start at host startup, identify itself,
> and then set parts of its own /proc/ process ID tree as world
> read/write. I think this will give
On Thu, Dec 12, 2019 at 5:08 PM Ulli Horlacher wrote:
>
> On Thu 2019-12-12 (21:59), Buchbinder, Barry (NIH/NIAID) [E] via cygwin wrote:
>
> > If the temp file was created by mktemp and the name saved in an
> > environmental variable, each bash shell could have its own file with not
> > risk that
On Thu 2019-12-12 (21:59), Buchbinder, Barry (NIH/NIAID) [E] via cygwin wrote:
> If the temp file was created by mktemp and the name saved in an
> environmental variable, each bash shell could have its own file with not
> risk that an instance of bash would erase another instance's file.
I need
Eliot Moss sent the following at Thursday, December 12, 2019 2:19 pm
>On 12/12/2019 7:00 AM, Ulli Horlacher wrote:
>
>> I need to store some data (a few kB) non-persistent.
>> On a real UNIX I would use /var/run, because after a shutdown all its
>> content is lost.
>> But on cygwin /var/run is
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