Re: [systemd-devel] udev_device_get_driver implementation
ll /sys/devices/LNXSYSTM:00/device:00/ACPI0012:00/ndbus0/region1/pfn1.1/block/pmem1/ total 0 -r--r--r-- 1 root root 4096 Apr 19 09:38 alignment_offset -rw-r--r-- 1 root root 4096 Apr 19 09:38 badblocks lrwxrwxrwx 1 root root0 Apr 19 09:38 bdi -> ../../../../../../../../virtual/bdi/259:3 -r--r--r-- 1 root root 4096 Apr 19 09:38 capability drwxr-xr-x 2 root root0 Apr 19 09:38 dax -r--r--r-- 1 root root 4096 Apr 19 09:38 dev lrwxrwxrwx 1 root root0 Apr 19 09:38 device -> ../../../pfn1.1 -r--r--r-- 1 root root 4096 Apr 19 09:38 discard_alignment -r--r--r-- 1 root root 4096 Apr 19 09:38 ext_range drwxr-xr-x 2 root root0 Apr 19 09:38 holders -r--r--r-- 1 root root 4096 Apr 19 09:38 inflight drwxr-xr-x 2 root root0 Apr 19 09:38 power drwxr-xr-x 2 root root0 Apr 19 09:38 queue -r--r--r-- 1 root root 4096 Apr 19 09:38 range -r--r--r-- 1 root root 4096 Apr 19 09:38 removable -r--r--r-- 1 root root 4096 Apr 19 09:38 ro -r--r--r-- 1 root root 4096 Apr 19 09:38 size drwxr-xr-x 2 root root0 Apr 19 09:38 slaves -r--r--r-- 1 root root 4096 Apr 19 09:38 stat lrwxrwxrwx 1 root root0 Apr 19 09:38 subsystem -> ../../../../../../../../../class/block drwxr-xr-x 2 root root0 Apr 19 09:38 trace -rw-r--r-- 1 root root 4096 Apr 19 09:38 uevent On Wed, Apr 24, 2019 at 11:53 AM Greg KH wrote: > On Wed, Apr 24, 2019 at 10:10:08AM -0700, Sayeed hyder wrote: > > Forgot to hit "reply all" > > > > On Wed, Apr 24, 2019 at 9:52 AM Sayeed hyder wrote: > > > > > Hi Greg, > > > > > > Sure, this is what I get if I use the syspath from > > > udev_device_get_syspath. As you can see, it is showing a symlink to a > > > device, and there is no driver. If it helps, it is a DAX mounted > persistent > > > memory device. > > > > > > [image: image.png] > > Sorry, can't see images from a text email client :( > > Anyway, if this is a DAX device, are you _SURE_ you are dealing with a > real device that is controlled by a driver, and not just a class device? > Class devices do not have drivers. How is the DAX device being exposed > to userspace? > > Can you provide a text version of your image? It's just sysfs, which is > text... > > thanks, > > greg k-h > ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] udev_device_get_driver implementation
Forgot to hit "reply all" On Wed, Apr 24, 2019 at 9:52 AM Sayeed hyder wrote: > Hi Greg, > > Sure, this is what I get if I use the syspath from > udev_device_get_syspath. As you can see, it is showing a symlink to a > device, and there is no driver. If it helps, it is a DAX mounted persistent > memory device. > > [image: image.png] > > Thanks, > > On Wed, Apr 24, 2019 at 9:38 AM Greg KH > wrote: > >> On Wed, Apr 24, 2019 at 08:38:02AM -0700, Sayeed hyder wrote: >> > Hi, >> > >> > I was looking at the udev_device_get_driver implementation. It first >> gets >> > the sys path and then appends "driver", and calls readlink to get the >> > driver information. Does it work for all cases? While working on a >> project, >> > I found that following the sys path, there is no "driver", but it >> should be >> > "device/driver" i.e. if I append "device/driver" instead of "driver" >> only, >> > I can use readlink to get the driver information. >> >> What in-kernel driver causes an odd sysfs tree like this? Can you show >> me the full path of it? >> >> thanks, >> >> greg k-h >> > ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] udev_device_get_driver implementation
Hi, I was looking at the udev_device_get_driver implementation. It first gets the sys path and then appends "driver", and calls readlink to get the driver information. Does it work for all cases? While working on a project, I found that following the sys path, there is no "driver", but it should be "device/driver" i.e. if I append "device/driver" instead of "driver" only, I can use readlink to get the driver information. Can anybody explain whether this was missing in the implementation or am I missing something? thanks ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] non-dev systemd-devel package for Linux
Thanks, I am not confused between udev and devel. Let me explain a bit more. My understanding is with the devel package, when I include in my project, I am downloading all the header files and redistributing the code. With the non-devel runtime package (e.g. libudev1 in Ubuntu), I can avoid that. Does that clarify my question and confusion? On Fri, Aug 31, 2018 at 11:17 AM, Vito Caputo wrote: > On Fri, Aug 31, 2018 at 07:11:38PM +0100, Simon McVittie wrote: > > On Fri, 31 Aug 2018 at 10:52:30 -0700, Sayeed hyder wrote: > > > Thanks Silvio. Unfortunately, I cannot use devel. IIUC, rhel/centos > does not > > > provide a non-dev systemd package? That does not sound right. > > > > Are you mixing up the concept of an unstable version that is still under > > development, and the concept of a package containing development headers > > to be used to compile your own software? They both have the word > > "development" in, but the thing that is being developed is different. > > > > I think another source of confusion in this situation is "udev" > containing the word "dev". I've only been skimming this thread as it > develops, but it seemed at times Sayeed is conflating the two to all be > development packages, perhaps not realizing udev is about *devices*. > > Regards, > Vito Caputo > ___ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel > ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] non-dev systemd-devel package for Linux
Thanks Silvio. Unfortunately, I cannot use devel. IIUC, rhel/centos does
not provide a non-dev systemd package? That does not sound right.
On Fri, Aug 31, 2018 at 10:35 AM, Silvio Knizek
wrote:
> Hi Sayeed,
>
> it is expected that header files are in the -devel packages. You can't
> change this. The package "systemd" contains "udev", so in "systemd-
> devel" are the header files for "udev". "udev" is part of systemd.
> RHLE/CentOS don't split this.
>
> Why can't you just use "systemd-devel"? It just contains everything you
> need to be able to compile against systemd and udev (and maybe more).
>
> BR
> Silvio
>
> Am Freitag, den 31.08.2018, 10:29 -0700 schrieb Sayeed hyder:
> > I tried Mantas's suggestion and try to install "yum install
> > libudev.so.1" which shows me "Package systemd-libs-219-
> > 57.el7_5.1.i686 already installed and latest version". Here is the
> > list of systemd packages already installed in my rhel vm. When I use
> > libudev.h in my program, it cannot compile ("no such file or
> > directory").
> >
> > But if i do "yum install libudev-devel", it installs systemd-
> > devel.x86_64 0:219-57.el7_5.1, and I can compile fine. So, the
> > problem seems to be the difference between package systemd-
> > devel.x86_64 0:219-57.el7_5.1 and package systemd-219-
> > 57.el7_5.1.x86_64. In the latter one, the libudev.h header file is
> > not exposed for use. I cannot use the "devel" version.
> > Any suggestion?
> >
> >
> > thanks,
> > Sayeed
> >
> >
> > On Fri, Aug 31, 2018 at 10:05 AM, Ryan Gonzalez
> > wrote:
> >
> > > Isn't it just "libudev", e.g. without the 1?
> > >
> > >
> > > On Fri, Aug 31, 2018, 11:19 AM Sayeed hyder
> > > wrote:
> > >
> > > > Thanks Reindl. Let me be a bit more specific. I am looking for
> > > > the
> > > > non-dev package. For example, for ubuntu and sles, I can do the
> > > > followiing
> > > >
> > > > apt-get install libudev1 works
> > > > zypper install libudev1 works
> > > >
> > > > But, for rhel,
> > > > yum install libudev1 cannot find package
> > > > yum install libudev-devel works
> > > >
> > > > Is there any runtime (non-dev) package for rhel/centos distro? If
> > > > so,
> > > > what is the package name I should look for?
> > > >
> > > >
> > > > thanks,
> > > > Sayeed
> > > >
> > > >
> > > > On Fri, Aug 31, 2018 at 8:24 AM, Reindl Harald <
> > > > h.rei...@thelounge.net>
> > > > wrote:
> > > >
> > > > >
> > > > >
> > > > > Am 31.08.18 um 16:51 schrieb Sayeed hyder:
> > > > > > Where can I get the link of available non-dev packages for
> > > > > > different
> > > > > > Linux distros? I am specifically looking for rhel version of
> > > > > > libudev
> > > > > > package.
> > > > >
> > > > > from the package repo of teh distribution?
> > > > > just download the CentOS one which is identical to RHEL
> > > > > ___
> > > > > systemd-devel mailing list
> > > > > systemd-devel@lists.freedesktop.org
> > > > > https://lists.freedesktop.org/mailman/listinfo/systemd-devel
> > > > >
> > > >
> > > > ___
> > > > systemd-devel mailing list
> > > > systemd-devel@lists.freedesktop.org
> > > > https://lists.freedesktop.org/mailman/listinfo/systemd-devel
> > > >
> > >
> > > --
> > >
> > > Ryan (ライアン)
> > > Yoko Shimomura, ryo (supercell/EGOIST), Hiroyuki Sawano >> everyone
> > > else
> > > https://refi64.com/
> > >
> >
> > ___
> > systemd-devel mailing list
> > systemd-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/systemd-devel
>
>
> ___
> systemd-devel mailing list
> systemd-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/systemd-devel
>
___
systemd-devel mailing list
systemd-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] non-dev systemd-devel package for Linux
I tried Mantas's suggestion and try to install "yum install libudev.so.1"
which shows me "Package systemd-libs-219-57.el7_5.1.i686 already installed
and latest version". Here is the list of systemd packages already installed
in my rhel vm. When I use libudev.h in my program, it cannot compile ("no
such file or directory").
But if i do "yum install libudev-devel", it installs systemd-devel.x86_64
0:219-57.el7_5.1, and I can compile fine. So, the problem seems to be the
difference between package systemd-devel.x86_64 0:219-57.el7_5.1 and
package systemd-219-57.el7_5.1.x86_64. In the latter one, the libudev.h
header file is not exposed for use. I cannot use the "devel" version. Any
suggestion?
thanks,
Sayeed
On Fri, Aug 31, 2018 at 10:05 AM, Ryan Gonzalez wrote:
> Isn't it just "libudev", e.g. without the 1?
>
>
> On Fri, Aug 31, 2018, 11:19 AM Sayeed hyder wrote:
>
>> Thanks Reindl. Let me be a bit more specific. I am looking for the
>> non-dev package. For example, for ubuntu and sles, I can do the followiing
>>
>> apt-get install libudev1 works
>> zypper install libudev1 works
>>
>> But, for rhel,
>> yum install libudev1 cannot find package
>> yum install libudev-devel works
>>
>> Is there any runtime (non-dev) package for rhel/centos distro? If so,
>> what is the package name I should look for?
>>
>>
>> thanks,
>> Sayeed
>>
>>
>> On Fri, Aug 31, 2018 at 8:24 AM, Reindl Harald
>> wrote:
>>
>>>
>>>
>>> Am 31.08.18 um 16:51 schrieb Sayeed hyder:
>>> > Where can I get the link of available non-dev packages for different
>>> > Linux distros? I am specifically looking for rhel version of libudev
>>> > package.
>>> from the package repo of teh distribution?
>>> just download the CentOS one which is identical to RHEL
>>> ___
>>> systemd-devel mailing list
>>> systemd-devel@lists.freedesktop.org
>>> https://lists.freedesktop.org/mailman/listinfo/systemd-devel
>>>
>>
>> ___
>> systemd-devel mailing list
>> systemd-devel@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/systemd-devel
>>
> --
>
> Ryan (ライアン)
> Yoko Shimomura, ryo (supercell/EGOIST), Hiroyuki Sawano >> everyone else
> https://refi64.com/
>
___
systemd-devel mailing list
systemd-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/systemd-devel
Re: [systemd-devel] non-dev systemd-devel package for Linux
Thanks Reindl. Let me be a bit more specific. I am looking for the non-dev package. For example, for ubuntu and sles, I can do the followiing apt-get install libudev1 works zypper install libudev1 works But, for rhel, yum install libudev1 cannot find package yum install libudev-devel works Is there any runtime (non-dev) package for rhel/centos distro? If so, what is the package name I should look for? thanks, Sayeed On Fri, Aug 31, 2018 at 8:24 AM, Reindl Harald wrote: > > > Am 31.08.18 um 16:51 schrieb Sayeed hyder: > > Where can I get the link of available non-dev packages for different > > Linux distros? I am specifically looking for rhel version of libudev > > package. > from the package repo of teh distribution? > just download the CentOS one which is identical to RHEL > ___ > systemd-devel mailing list > systemd-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/systemd-devel > ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
[systemd-devel] non-dev systemd-devel package for Linux
Hi, Where can I get the link of available non-dev packages for different Linux distros? I am specifically looking for rhel version of libudev package. thanks, Sayeed ___ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
