[arch-general] Linux Kernel capabilities
I build my own kernel with ABS. To allow my nspawn container to load kernel modules, I must add this to nspawn unit file: --capability=CAP_SYS_MODULE. Unfortunately, it doesn't work and needed modules are not loaded from container but only from host. I realized there is no #define CAP_SYS_MODULE in /usr/lib/modules/4.1.2-2-ARCH/build/include/linux/capability.h. Is this specific to the arch kernel ? Thank you for hints. -- google.com/+arnaudgabourygabx <https://plus.google.com/_/notifications/emlink?emr=05814804238976922326&emid=CKiv-v6PvboCFcfoQgod6msAAA&path=%2F116159236040461325607%2Fop%2Fu&dt=1383086841306&ub=50>
On Fri, 17 Jul 2015 12:20:39 +0200 arnaud gaboury <arnaud.gaboury@gmail.com> wrote:
I build my own kernel with ABS.
To allow my nspawn container to load kernel modules, I must add this to nspawn unit file: --capability=CAP_SYS_MODULE.
Unfortunately, it doesn't work and needed modules are not loaded from container but only from host. I realized there is no #define CAP_SYS_MODULE in /usr/lib/modules/4.1.2-2-ARCH/build/include/linux/capability.h.
Is this specific to the arch kernel ?
Thank you for hints.
It was moved to include/uapi/linux/capability.h recentlyish. As for your actual issue, SYS_CAP_MODULE isn't listed in the valid capabilities for --capability in the systemd-nspawn manpage. Are you perhaps confusing options? Regards, ~Celti
Not at all, but you are right, it is not mentioned in systemd-nspawn man. But according to Mr Systemd, it is a valid option. On Fri, Jul 17, 2015, 12:42 PM Patrick Burroughs (Celti) <celti@celti.name> wrote:
On Fri, 17 Jul 2015 12:20:39 +0200 arnaud gaboury <arnaud.gaboury@gmail.com> wrote:
I build my own kernel with ABS.
To allow my nspawn container to load kernel modules, I must add this to nspawn unit file: --capability=CAP_SYS_MODULE.
Unfortunately, it doesn't work and needed modules are not loaded from container but only from host. I realized there is no #define CAP_SYS_MODULE in /usr/lib/modules/4.1.2-2-ARCH/build/include/linux/capability.h.
Is this specific to the arch kernel ?
Thank you for hints.
It was moved to include/uapi/linux/capability.h recentlyish.
As for your actual issue, SYS_CAP_MODULE isn't listed in the valid capabilities for --capability in the systemd-nspawn manpage. Are you perhaps confusing options?
Regards, ~Celti
On Fri, Jul 17, 2015, 12:42 PM Patrick Burroughs (Celti) <celti@celti.name> wrote: On Fri, 17 Jul 2015 12:20:39 +0200 arnaud gaboury <arnaud.gaboury@gmail.com> wrote:
I build my own kernel with ABS.
To allow my nspawn container to load kernel modules, I must add this to nspawn unit file: --capability=CAP_SYS_MODULE.
Unfortunately, it doesn't work and needed modules are not loaded from container but only from host. I realized there is no #define CAP_SYS_MODULE in /usr/lib/modules/4.1.2-2-ARCH/build/include/linux/capability.h.
Is this specific to the arch kernel ?
Thank you for hints.
It was moved to include/uapi/linux/capability.h recentlyish The fact it has been moved could well explain why it doesn't work for my container ? As for your actual issue, SYS_CAP_MODULE isn't listed in the valid capabilities for --capability in the systemd-nspawn manpage. Are you perhaps confusing options? Regards, ~Celti
Unfortunately, it doesn't work and needed modules are not loaded from container but only from host. I realized there is no #define CAP_SYS_MODULE in /usr/lib/modules/4.1.2-2-ARCH/build/include/linux/capability.h.
Look at /usr/include/linux/capability.h (linux-api-headers) instead.
It was moved to include/uapi/linux/capability.h recentlyish.
Not really, more like December 2012, with kernel 3.7.
As for your actual issue, SYS_CAP_MODULE isn't listed in the valid capabilities for --capability in the systemd-nspawn manpage. Are you perhaps confusing options?
Looking at the manpage it doesn't say "valid", it's just a list of default capabilities. --byte
On Fri, Jul 17, 2015 at 1:08 PM, Jens Adam <jra@byte.cx> wrote:
Unfortunately, it doesn't work and needed modules are not loaded from container but only from host. I realized there is no #define CAP_SYS_MODULE in /usr/lib/modules/4.1.2-2-ARCH/build/include/linux/capability.h.
Look at /usr/include/linux/capability.h (linux-api-headers) instead.
Much better indeed. TY
It was moved to include/uapi/linux/capability.h recentlyish.
Not really, more like December 2012, with kernel 3.7.
As for your actual issue, SYS_CAP_MODULE isn't listed in the valid capabilities for --capability in the systemd-nspawn manpage. Are you perhaps confusing options?
Looking at the manpage it doesn't say "valid", it's just a list of default capabilities.
--byte
-- google.com/+arnaudgabourygabx <https://plus.google.com/_/notifications/emlink?emr=05814804238976922326&emid=CKiv-v6PvboCFcfoQgod6msAAA&path=%2F116159236040461325607%2Fop%2Fu&dt=1383086841306&ub=50>
participants (3)
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arnaud gaboury
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Jens Adam
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Patrick Burroughs (Celti)