Move all the frontend struct and methods to a seperate unit. This avoids
accidentally mixing backend and frontend calls, and helps with readabilty.
Make qemu_chr_replay() a macro shared by both char and char-fe.
Export qemu_chr_write(), and use a macro for qemu_chr_write_all()
(nb: yes, CharBackend is for char frontend :)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
So they are all in one place. The following patch will move serial &
parallel declarations to the respective headers.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Those are apparently unnecessary includes.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Drop the old SysBusDeviceClass::init and use instance_init
or DeviceClass::realize instead
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Drop the old SysBusDeviceClass::init and use instance_init
or DeviceClass::realize instead
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
rename slavio_timer_init1 to slavio_timer_init and assign
it to slavio_timer_info.instance_init, then we drop the
SysBusDeviceClass::init
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
* split the old SysBus init function into an instance_init
and a Device realize function
* use DeviceClass::realize instead of SysBusDeviceClass::init
* assign DeviceClass::vmsd instead of using vmstate_register function
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Drop the old SysBus init function and use instance_init
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Drop the old SysBus init function and use instance_init
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Drop the old SysBus init function and use instance_init
and an realize function
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
* Split the old SysBus init into an instance_init and a
DeviceClass::realize function
* Drop the old SysBus init function and use instance_init
Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Split the file into public and internal interfaces. I have to rename
the external one because we can't have two include files with the same
name in the same directory. Build system gets confused. The only
exported functions are the ones that handle basic types.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
mapped-file security mode (especially for the virtfs root).
-----BEGIN PGP SIGNATURE-----
iEYEABECAAYFAlktdVYACgkQAvw66wEB28LaTgCfS/bunOy4Wp+I+DO/Gx/5bfNp
7/IAn3qfJYBqRnpfz8KNKRZJ8QG/Bu5X
=KTTf
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging
Various bugfixes and code cleanups. Most notably, it fixes metadata handling in
mapped-file security mode (especially for the virtfs root).
# gpg: Signature made Tue 30 May 2017 14:36:22 BST
# gpg: using DSA key 0x02FC3AEB0101DBC2
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Greg Kurz <groug@free.fr>"
# gpg: aka "Greg Kurz <gkurz@linux.vnet.ibm.com>"
# gpg: aka "Gregory Kurz (Groug) <groug@free.fr>"
# gpg: aka "[jpeg image of size 3330]"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 2BD4 3B44 535E C0A7 9894 DBA2 02FC 3AEB 0101 DBC2
* remotes/gkurz/tags/for-upstream:
9pfs: local: metadata file for the VirtFS root
9pfs: local: simplify file opening
9pfs: local: resolve special directories in paths
9pfs: check return value of v9fs_co_name_to_path()
util: drop old utimensat() compat code
9pfs: assume utimensat() and futimens() are present
fsdev: fix virtfs-proxy-helper cwd
9pfs: local: fix unlink of alien files in mapped-file mode
9pfs: drop pdu_push_and_notify()
fsdev: don't allow unknown format in marshal/unmarshal
virtio-9p/xen-9p: move 9p specific bits to core 9p code
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=kkU0
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'kwolf/tags/for-upstream' into staging
Block layer patches
# gpg: Signature made Mon 29 May 2017 03:34:59 PM BST
# gpg: using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* kwolf/tags/for-upstream:
block/file-*: *_parse_filename() and colons
block: Fix backing paths for filenames with colons
block: Tweak error message related to qemu-img amend
qemu-img: Fix leakage of options on error
qemu-img: copy *key-secret opts when opening newly created files
qemu-img: introduce --target-image-opts for 'convert' command
qemu-img: fix --image-opts usage with dd command
qemu-img: add support for --object with 'dd' command
qemu-img: Fix documentation of convert
qcow2: remove extra local_error variable
mirror: Drop permissions on s->target on completion
nvme: Add support for Controller Memory Buffers
iotests: 147: Don't test inet6 if not available
qemu-iotests: Test streaming with missing job ID
stream: fix crash in stream_start() when block_job_create() fails
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
A bunch of fixes all over the place. Most notably this fixes
the new MTU feature when using vhost.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJZK2bwAAoJECgfDbjSjVRpNBgIALmNG7VaixhNUlnfX1n1JBnh
+HBP2zNfvi0q5roBuPFmlziKa3IBHb2Fcte4nb6QxmPg+uoaj39AOzfrrvz210kR
h2j5Qk2bCdMeWBpxI+xDDScwi/Im23Y6KN1eZyMekFr2CaSGiqOHZPPdbsyEcHPB
VylM0uHqSTZL5JAAzEuYlH+LLfPu91HoxMsIAdNuQX+qKyM2DZ4eICBQ0zA73USt
OduZltcRMk7UpvQMqY+2iaEXapXQQEUGrP2Mo8ZyqeIl2ItC33GspqBQIKjuZdrr
tpr/T1VWsLdZnURZXyELrFqrErDXvKaP9HROwvyLyYPXZF+pJ3LA7TopS5UmfNQ=
=Z4xG
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'mst/tags/for_upstream' into staging
pci, virtio, vhost: fixes
A bunch of fixes all over the place. Most notably this fixes
the new MTU feature when using vhost.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon 29 May 2017 01:10:24 AM BST
# gpg: using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* mst/tags/for_upstream:
acpi-test: update expected files
pc: ACPI BIOS: use highest NUMA node for hotplug mem hole SRAT entry
vhost-user: pass message as a pointer to process_message_reply()
virtio_net: Bypass backends for MTU feature negotiation
intel_iommu: turn off pt before 2.9
intel_iommu: support passthrough (PT)
intel_iommu: allow dev-iotlb context entry conditionally
intel_iommu: use IOMMU_ACCESS_FLAG()
intel_iommu: provide vtd_ce_get_type()
intel_iommu: renaming context entry helpers
x86-iommu: use DeviceClass properties
memory: remove the last param in memory_region_iommu_replay()
memory: tune last param of iommu_ops.translate()
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Assorted accumulated patches. These are nearly all bugfixes at one
level or another - some for longstanding problems, others for some
regressions caused by more recent cleanups.
This includes preliminary patches towards fixing migration for Radix
Page Table guests under POWER9 and also fixing some migration
regressions due to the re-organization of the interrupt controller
code. Not all the pieces are there yet, so those still won't quite
work, but the preliminary changes make sense on their own.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=nlnV
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'dgibson/tags/ppc-for-2.10-20170525' into staging
ppc patch queue 2017-05-25
Assorted accumulated patches. These are nearly all bugfixes at one
level or another - some for longstanding problems, others for some
regressions caused by more recent cleanups.
This includes preliminary patches towards fixing migration for Radix
Page Table guests under POWER9 and also fixing some migration
regressions due to the re-organization of the interrupt controller
code. Not all the pieces are there yet, so those still won't quite
work, but the preliminary changes make sense on their own.
# gpg: Signature made Thu 25 May 2017 04:50:00 AM BST
# gpg: using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>"
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* dgibson/tags/ppc-for-2.10-20170525:
xics: add unrealize handler
hw/ppc/spapr.c: recover pending LMB unplug info in spapr_lmb_release
hw/ppc: migrating the DRC state of hotplugged devices
hw/ppc: removing drc->detach_cb and drc->detach_cb_opaque
hw/ppc/spapr.c: adding pending_dimm_unplugs to sPAPRMachineState
spapr: add pre_plug function for memory
pseries: Restore support for total vcpus not a multiple of threads-per-core for old machine types
pseries: Split CAS PVR negotiation out into a separate function
spapr: fix error reporting in xics_system_init()
spapr_cpu_core: drop reference on ICP object during CPU realization
hw/ppc/spapr_events.c: removing 'exception' from sPAPREventLogEntry
spapr: ensure core_slot isn't NULL in spapr_core_unplug()
xics_kvm: cache already enabled vCPU ids
spapr: Consolidate HPT freeing code into a routine
spapr-cpu-core: release ICP object when realization fails
spapr: sanitize error handling in spapr_ics_create()
ppc/xics: simplify prototype of xics_spapr_init()
target/ppc: reset reservation in do_rfi()
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
ehci registers ehci_frame_timer as both timer and bottom half, which
turned out to be a bad idea as it can be called as bottom half then
while it is running as timer, and it isn't prepared to handle recursive
calls.
Change the timer func to just schedule the bottom half to avoid this.
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1449609
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170519120428.25981-1-kraxel@redhat.com
PORT_STAT_C_SUSPEND should be set even on host-initiated wake-up,
i.e. on ClearPortFeature(PORT_SUSPEND). Windows is known to not
work properly otherwise.
Side note, since PORT_ENABLE looks similar and might appear to
have the same issue: According to 11.24.2.7.2.2 C_PORT_ENABLE:
"This bit is set when the PORT_ENABLE bit changes from one to
zero as a result of a Port Error condition (see Section 11.8.1).
This bit is not set on any other changes to PORT_ENABLE."
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Message-id: 20170522123325.2199-1-lprosek@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Moved structs and defines to hcd-xhci.h.
Move nec controller variant to hcd-xhci-nec.c.
No functional changes.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170517103313.8459-1-kraxel@redhat.com
Coverity complains about the current code, so let's get rid of
the now unneeded while loop and simply always emit "unrecognized
serial USB option" for all unsupported options.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1495177204-16808-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
In case the frame timer doesn't run for a while due to the host being
busy skipped_uframes can become big enough that UFRAME_TIMER_NS *
skipped_uframes overflows. Which in turn throws off all subsequent
ehci frame timer calculations.
Reported-by: 李林 <8610_28@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170515104543.32044-1-kraxel@redhat.com
For reasons unknown, Windows won't online all memory, both at command
line and hot-plugged later, unless the hotplug mem hole SRAT entry
specifies a node greater than or equal to the ones where memory is
added.
Using the highest node on the machine makes recent versions of Windows
happy.
With this example command line:
... \
-m 1024,slots=4,maxmem=32G \
-numa node,nodeid=0 \
-numa node,nodeid=1 \
-numa node,nodeid=2 \
-numa node,nodeid=3 \
-object memory-backend-ram,size=1G,id=mem-mem1 \
-device pc-dimm,id=dimm-mem1,memdev=mem-mem1,node=1
Windows reports a total of 1G of RAM without this commit and the expected
2G with this commit.
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Implement NVMe Controller Memory Buffers (CMBs) which were added in
version 1.2 of the NVMe Specification. This patch adds an optional
argument (cmb_size_mb) which indicates the size of the CMB (in
MB). Currently only the Submission Queue Support (SQS) is enabled
which aligns with the current Linux driver for NVMe.
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
process_message_reply() was recently updated to get full message
content instead of only its request field.
There is no need to copy all the struct content into the stack,
so just pass its pointer as const.
Reviewed-by: Jens Freimann <jfreiman@redhat.com>
Reviewed-by: Zhiyong Yang <zhiyong.yang@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This patch adds a new internal "x-mtu-bypass-backend" property
to bypass backends for MTU feature negotiation.
When this property is set, the MTU feature is negotiated as soon
as supported by the guest and a MTU value is set via the host_mtu
parameter. In case the backend advertises the feature (e.g. DPDK's
vhost-user backend), the feature negotiation is propagated down to
the backend.
When this property is not set, the backend has to support the MTU
feature for its negotiation to succeed.
For compatibility purpose, this property is disabled for machine
types v2.9 and older.
Cc: Aaron Conole <aconole@redhat.com>
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Vlad Yasevich <vyasevic@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Hardware support for VT-d device passthrough. Although current Linux can
live with iommu=pt even without this, but this is faster than when using
software passthrough.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Liu, Yi L <yi.l.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
When device-iotlb is not specified, we should fail this check. A new
function vtd_ce_type_check() is introduced.
While I'm at it, clean up the vtd_dev_to_context_entry() a bit - replace
many "else if" usage into direct if check. That'll make the logic more
clear.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
We have that now, so why not use it.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Helper to fetch VT-d context entry type.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
The old names are too long and less ordered. Let's start to use
vtd_ce_*() as a pattern.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
No reason to keep tens of lines if we can do it actually far shorter.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
We were always passing in that one as "false" to assume that's an read
operation, and we also assume that IOMMU translation would always have
that read permission. A better permission would be IOMMU_NONE since the
replay is after all not a real read operation, but just a page table
rebuilding process.
CC: David Gibson <david@gibson.dropbear.id.au>
CC: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
This patch converts the old "is_write" bool into IOMMUAccessFlags. The
difference is that "is_write" can only express either read/write, but
sometimes what we really want is "none" here (neither read nor write).
Replay is an good example - during replay, we should not check any RW
permission bits since thats not an actual IO at all.
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
When using the mapped-file security, credentials are stored in a metadata
directory located in the parent directory. This is okay for all paths with
the notable exception of the root path, since we don't want and probably
can't create a metadata directory above the virtfs directory on the host.
This patch introduces a dedicated metadata file, sitting in the virtfs root
for this purpose. It relies on the fact that the "." name necessarily refers
to the virtfs root.
As for the metadata directory, we don't want the client to see this file.
The current code only cares for readdir() but there are many other places
to fix actually. The filtering logic is hence put in a separate function.
Before:
# ls -ld
drwxr-xr-x. 3 greg greg 4096 May 5 12:49 .
# chown root.root .
chown: changing ownership of '.': Is a directory
# ls -ld
drwxr-xr-x. 3 greg greg 4096 May 5 12:49 .
After:
# ls -ld
drwxr-xr-x. 3 greg greg 4096 May 5 12:49 .
# chown root.root .
# ls -ld
drwxr-xr-x. 3 root root 4096 May 5 12:50 .
and from the host:
ls -al .virtfs_metadata_root
-rwx------. 1 greg greg 26 May 5 12:50 .virtfs_metadata_root
$ cat .virtfs_metadata_root
virtfs.uid=0
virtfs.gid=0
Reported-by: Leo Gaspard <leo@gaspard.io>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Leo Gaspard <leo@gaspard.io>
[groug: work around a patchew false positive in
local_set_mapped_file_attrat()]
The logic to open a path currently sits between local_open_nofollow() and
the relative_openat_nofollow() helper, which has no other user.
For the sake of clarity, this patch moves all the code of the helper into
its unique caller. While here we also:
- drop the code to skip leading "/" because the backend isn't supposed to
pass anything but relative paths without consecutive slashes. The assert()
is kept because we really don't want a buggy backend to pass an absolute
path to openat().
- use strchrnul() to get a simpler code. This is ok since virtfs is for
linux+glibc hosts only.
- don't dup() the initial directory and add an assert() to ensure we don't
return the global mountfd to the caller. BTW, this would mean that the
caller passed an empty path, which isn't supposed to happen either.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
[groug: fixed typos in changelog]
When using the mapped-file security mode, the creds of a path /foo/bar
are stored in the /foo/.virtfs_metadata/bar file. This is okay for all
paths unless they end with '.' or '..', because we cannot create the
corresponding file in the metadata directory.
This patch ensures that '.' and '..' are resolved in all paths.
The core code only passes path elements (no '/') to the backend, with
the notable exception of the '/' path, which refers to the virtfs root.
This patch preserves the current behavior of converting it to '.' so
that it can be passed to "*at()" syscalls ('/' would mean the host root).
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
These v9fs_co_name_to_path() call sites have always been around. I guess
no care was taken to check the return value because the name_to_path
operation could never fail at the time. This is no longer true: the
handle and synth backends can already fail this operation, and so will the
local backend soon.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
The utimensat() and futimens() syscalls have been around for ages (ie,
glibc 2.6 and linux 2.6.22), and the decision was already taken to
switch to utimensat() anyway when fixing CVE-2016-9602 in 2.9.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
When trying to remove a file from a directory, both created in non-mapped
mode, the file remains and EBADF is returned to the guest.
This is a regression introduced by commit "df4938a665 9pfs: local:
unlinkat: don't follow symlinks" when fixing CVE-2016-9602. It changed the
way we unlink the metadata file from
ret = remove("$dir/.virtfs_metadata/$name");
if (ret < 0 && errno != ENOENT) {
/* Error out */
}
/* Ignore absence of metadata */
to
fd = openat("$dir/.virtfs_metadata")
unlinkat(fd, "$name")
if (ret < 0 && errno != ENOENT) {
/* Error out */
}
/* Ignore absence of metadata */
If $dir was created in non-mapped mode, openat() fails with ENOENT and
we pass -1 to unlinkat(), which fails in turn with EBADF.
We just need to check the return of openat() and ignore ENOENT, in order
to restore the behaviour we had with remove().
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
[groug: rewrote the comments as suggested by Eric]
Only pdu_complete() needs to notify the client that a request has completed.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
These bits aren't related to the transport so let's move them to the core
code.
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Now that ICPState objects get finalized on CPU unplug, we should unregister
reset handlers as well to avoid a QEMU crash at machine reset time.
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
