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ENOENT should be treated as "false", but because of the broken errno check it
was treated as an error. So ConditionVirtualization=user-namespaces probably
returned the correct answer, but only by accident.
Fixes #4608.
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Various things don't work when we're running in a user namespace, but it's
pretty hard to reliably detect if that is true.
A function is added which looks at /proc/self/uid_map and returns false
if the default "0 0 UINT32_MAX" is found, and true if it finds anything else.
This misses the case where an 1:1 mapping with the full range was used, but
I don't know how to distinguish this case.
'systemd-detect-virt --private-users' is very similar to
'systemd-detect-virt --chroot', but we check for a user namespace instead.
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https://bugzilla.redhat.com/show_bug.cgi?id=1379852
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The CPUID and DMI vendor strings do not seem to be documented.
Values were found experimentally and by inspecting the source code.
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This is hardly useful, it's trivial for developers to get that info by running
cat /proc/cpuinfo.
Fixes #3155
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When running in XEN Dom0 the virtualization check:
1) detect_xen returns HYPERVISOR_NONE so next checks are executed
2) /proc/sys/hypervisor detects a XEN hypervisor
it is lacking the special Dom0 detection as in detect_xen
With this patch, at the end of all virtualization checks we double-check if running in XEN Dom0 or DomU.
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print out every single detection executed and its result.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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My previous patch to only include what we use accidentially placed
the added inlcudes in non-sorted order.
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This is a cleaned up result of running iwyu but without forward
declarations on src/basic.
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Virtualbox should be detected as 'oracle'. This used to work but broke
with commit:
commit 75f86906c52735c98dc0aa7e24b773edb42ee814
Author: Lennart Poettering <lennart@poettering.net>
Date: Mon Sep 7 13:42:47 2015 +0200
basic: rework virtualization detection API
We swap detection for dmi and cpuid, this fixes Virtualbox with KVM.
Hopefully it does not break anything else.
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nitpick from PR #1910
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src/basic/virt.c: In function 'detect_vm_device_tree':
src/basic/virt.c:117:17: error: unknown type name '_cleanup_closedir_'
_cleanup_closedir_ DIR *dir = NULL;
src/basic/virt.c:128:17: error: implicit declaration of function 'FOREACH_DIRENT' [-Werror=implicit-function-declaration]
FOREACH_DIRENT(dent, dir, return -errno)
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VIRTUALIZATION_CONTAINER_OTHER
If we don't know a container manager, we should consider it as "other"
rather than as no container manager at all, to provide a somwhat useful
upgrade path.
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Some guests (ARM, AArch64, x86-RHEL) have 'KVM' in the product name.
Look for that first in order to more precisely report "kvm" when
detecting a QEMU/KVM guest. Without this patch we report "qemu",
even if KVM acceleration is in use on ARM/AArch64 guests.
I've only tested a backported version of this and the previous
patch on an AArch64 guest (which worked). Of course it would be
nice to get regression testing on all guest types that depend on
dmi done.
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ARM/AArch64 guests now have SMBIOS tables populated (when boot
with a late enough QEMU and a late enough AAVMF is used as the
bootloader). Furthermore, when booting ARM/AArch64 guests with
ACPI, the DT detection obviously no longer works, so we need
dmi detection.
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afaict, this will fix a regression caused by commit 75f86906c5.
Where we used to report "kvm" before that patch, without this patch,
we would only report "qemu". The reason is because cpuid detection
must come before dmi detection. Also, both can safely come before
other xen heuristics. Untested.
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It's a very weak kind of virtualization, after all.
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string-util.[ch]
There are more than enough calls doing string manipulations to deserve
its own files, hence do something about it.
This patch also sorts the #include blocks of all files that needed to be
updated, according to the sorting suggestions from CODING_STYLE. Since
pretty much every file needs our string manipulation functions this
effectively means that most files have sorted #include blocks now.
Also touches a few unrelated include files.
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All users of get_status_field() expect the field pattern to occur in
the beginning of a line, and the delimiter is ':'.
Hardcode this into the function, and also skip any whitespace before ':'
to support fields in files like /proc/cpuinfo. Add support for returning
the full field value (currently stops on first whitespace).
Rename the function so it's easier to ensure all callers switch to new
semantics.
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Introduce a proper enum, and don't pass around string ids anymore. This
simplifies things quite a bit, and makes virtualization detection more
similar to architecture detection.
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inspired by http://people.redhat.com/~rjones/virt-what/
see:
* http://git.annexia.org/?p=virt-what.git;a=blob;f=virt-what.in;h=a5ed33ef3e4bfa3281c9589eccac4d92dff1babe;hb=HEAD#l200
* http://git.annexia.org/?p=virt-what.git;a=blob;f=virt-what.in;h=a5ed33ef3e4bfa3281c9589eccac4d92dff1babe;hb=HEAD#l253
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Virtualbox 5.0 now supports kvm hypervisor. In this case cpuid
identidies as "kvm", which breaks units depending on
ConditionVirtualization=oracle.
So return "oracle" even with kvm hypervisor.
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basic/ can be used by everything
cannot use anything outside of basic/
libsystemd/ can use basic/
cannot use shared/
shared/ can use libsystemd/
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