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Continue eliminating the sregs array in favor of individual members.
Does not correct the width of BTR, yet.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Continue eliminating the sregs array in favor of individual members.
Does not correct the width of FSR, yet.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Continue eliminating the sregs array in favor of individual members.
Does not correct the width of ESR, yet.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Continue eliminating the sregs array in favor of individual members.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Continue eliminating the sregs array in favor of individual members.
Does not correct the width of MSR, yet.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Begin eliminating the sregs array in favor of individual members.
Does not correct the width of pc, yet.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Use an enumeration for the gdb register mapping. Use one
switch statement for the entire dispatch. Drop sreg_map
and simply enumerate those cases explicitly. Force r0 to
have value 0 and ignore writes.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Define anything that is missing as 0, so that flags & FE_FOO
is false for any missing FOO.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This is optional in ISO C, and not all cpus provide it.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Not attempting to use a single cross-compiler for both
big-endian and little-endian at this time.
Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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into staging
usb: usb_packet_map fixes for ehci and xhci.
usb: setup_len fix (CVE-2020-14364).
usb: u2f key support (GSoC).
* v2: 32bit build fixed.
* v3: libu2f-emu dependency fixed.
# gpg: Signature made Mon 31 Aug 2020 09:32:49 BST
# gpg: using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/usb-20200831-pull-request:
usb: fix setup_len init (CVE-2020-14364)
usb-host: workaround libusb bug
hw/usb: Add U2F device autoscan to passthru mode
hw/usb: Add U2F device check to passthru mode
scripts: Add u2f-setup-gen script
docs/qdev-device-use.txt: Add USB U2F key to the QDEV devices examples
docs/system: Add U2F key to the USB devices examples
meson: Add U2F key to meson
hw/usb: Add U2F key emulated mode
hw/usb: Add U2F key passthru mode
hw/usb: Add U2F key base class implementation
hw/usb: Add U2F key base class
docs: Add USB U2F key device documentation
hw/usb: Regroup USB HID protocol values
ehci: drop pointless warn_report for guest bugs.
hw: ehci: check return value of 'usb_packet_map'
hw: ehci: destroy sglist in error path
hw: xhci: check return value of 'usb_packet_map'
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Store calculated setup_len in a local variable, verify it, and only
write it to the struct (USBDevice->setup_len) in case it passed the
sanity checks.
This prevents other code (do_token_{in,out} functions specifically)
from working with invalid USBDevice->setup_len values and overrunning
the USBDevice->setup_buf[] buffer.
Fixes: CVE-2020-14364
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-id: 20200825053636.29648-1-kraxel@redhat.com
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libusb_get_device_speed() does not work for
libusb_wrap_sys_device() devices in v1.0.23.
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1871090
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200824110057.32089-1-kraxel@redhat.com
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This patch adds an autoscan to let u2f-passthru choose the first U2F
device it finds.
The autoscan is performed using libudev with an enumeration of all the
hidraw devices present on the host.
The first device which happens to be a U2F device is taken to do the
passtru.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-13-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patchs adds a check to verify that the device passed through the
hidraw property is a U2F device.
The check is done by ensuring that the first values of the report
descriptor (USAGE PAGE and USAGE) correspond to those of a U2F device.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-12-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch adds the script used to generate setup directories, needed
for the device u2f-emulated configuration in directory mode:
python u2f-setup-gen.py $DIR
qemu -usb -device u2f-emulated,dir=$DIR
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-11-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-10-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-9-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-8-cesar.belley@lse.epita.fr
[ fixes suggested by paolo ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch adds the U2F key emulated mode.
The emulated mode consists of completely emulating the behavior of a
U2F device through software part. Libu2f-emu is used for that.
The emulated mode is associated with a device inheriting from
u2f-key base.
To work, an emulated U2F device must have differents elements which
can be given in different ways. This is detailed in docs/u2f.txt.
The Ephemeral one is the simplest way to configure, it lets the device
generate all the elements it needs for a single use of the lifetime
of the device:
qemu -usb -device u2f-emulated
For more information about libu2f-emu see this page:
https://github.com/MattGorko/libu2f-emu.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-7-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch adds the U2F key pass-through mode.
The pass-through mode consists of passing all requests made from the
guest to the physical security key connected to the host machine and
vice versa.
In addition, the dedicated pass-through allows to have a U2F security key
shared on several guests which is not possible with a simple host device
assignment pass-through.
The pass-through mode is associated with a device inheriting from
u2f-key base.
To work, it needs the path to a U2F hidraw, obtained from the Qemu
command line, and passed by the user:
qemu -usb -device u2f-passthru,hidraw=/dev/hidrawX
Autoscan and U2F compatibility checking features are given at the end
of the patch series.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-6-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch adds the U2F key base class implementation.
The U2F key base mainly takes care of the HID interfacing with guest.
On the one hand, it retrieves the guest U2FHID packets and transmits
them to the variant associated according to the mode: pass-through
or emulated.
On the other hand, it provides the public API used by its variants to
send U2FHID packets to the guest.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-5-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This patch adds the specification for the U2F key base class.
Used to group the common characteristics, this device class will be
inherited by its two variants, corresponding to the two modes:
passthrough and emulated
This prepares the U2F devices hierarchy which is as follow:
USB device -> u2f-key -> {u2f-passthru, u2f-emulated}.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-4-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Add USB U2F key device documentation:
- USB U2F key device
- Building
- Using u2f-emulated
- Using u2f-passthru
- Libu2f-emu
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200826114209.28821-3-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Group some HID values that are used pretty much everywhere when
dealing with HID devices.
Signed-off-by: César Belley <cesar.belley@lse.epita.fr>
Message-id: 20200812094135.20550-2-cesar.belley@lse.epita.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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We have a tracepoint at the same place which can be enabled if needed.
Buglink: https://bugzilla.redhat.com//show_bug.cgi?id=1859236
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200722072613.10390-1-kraxel@redhat.com>
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If 'usb_packet_map' fails, we should stop to process the usb
request.
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200812161727.29412-1-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This may cause resource leak.
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200812161712.29361-1-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Currently we don't check the return value of 'usb_packet_map',
this will cause an UAF issue. This is LP#1891341.
Following is the reproducer provided in:
-->https://bugs.launchpad.net/qemu/+bug/1891341
cat << EOF | ./i386-softmmu/qemu-system-i386 -device nec-usb-xhci \
-trace usb\* -device usb-audio -device usb-storage,drive=mydrive \
-drive id=mydrive,file=null-co://,size=2M,format=raw,if=none \
-nodefaults -nographic -qtest stdio
outl 0xcf8 0x80001016
outl 0xcfc 0x3c009f0d
outl 0xcf8 0x80001004
outl 0xcfc 0xc77695e
writel 0x9f0d000000000040 0xffff3655
writeq 0x9f0d000000002000 0xff2f9e0000000000
write 0x1d 0x1 0x27
write 0x2d 0x1 0x2e
write 0x17232 0x1 0x03
write 0x17254 0x1 0x06
write 0x17278 0x1 0x34
write 0x3d 0x1 0x27
write 0x40 0x1 0x2e
write 0x41 0x1 0x72
write 0x42 0x1 0x01
write 0x4d 0x1 0x2e
write 0x4f 0x1 0x01
writeq 0x9f0d000000002000 0x5c051a0100000000
write 0x34001d 0x1 0x13
write 0x340026 0x1 0x30
write 0x340028 0x1 0x08
write 0x34002c 0x1 0xfe
write 0x34002d 0x1 0x08
write 0x340037 0x1 0x5e
write 0x34003a 0x1 0x05
write 0x34003d 0x1 0x05
write 0x34004d 0x1 0x13
writeq 0x9f0d000000002000 0xff00010100400009
EOF
This patch fixes this.
Buglink: https://bugs.launchpad.net/qemu/+bug/1891341
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-id: 20200812153139.15146-1-liq3ea@163.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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* float16 comparison wrappers
* float16 conversions to/from 8-bit integers
* bfloat16 support
# gpg: Signature made Sun 30 Aug 2020 03:29:54 BST
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth/tags/pull-sf-20200829:
softfloat: Define comparison operations for bfloat16
softfloat: Define misc operations for bfloat16
softfloat: Define convert operations for bfloat16
softfloat: Define operations for bfloat16
softfloat: Add float16_is_normal
softfloat: Add fp16 and uint8/int8 conversion functions
softfloat: Implement the full set of comparisons for float16
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Reviewed-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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'remotes/vivier2/tags/linux-user-for-5.2-pull-request' into staging
add utimensat_time64, semtimedop_time64, rt_sigtimedwait_time64,
sched_rr_get_interval_time64, clock_nanosleep_time64, clock_adjtime64,
mq_timedsend_time64, mq_timedreceive_time64
fix semop, semtimedop, clock_nanosleep, mq_timedsend, target_to_host_timespec64
fix tembits.h
add more strace function
Add upport DRM_IOCTL_I915_GETPARAM
detect mismatched ELF ABI in qemu-mips[n32][el]
# gpg: Signature made Fri 28 Aug 2020 14:37:33 BST
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C
* remotes/vivier2/tags/linux-user-for-5.2-pull-request:
linux-user: Add support for utimensat_time64() and semtimedop_time64()
linux-user: Add support for 'rt_sigtimedwait_time64()' and 'sched_rr_get_interval_time64()'
linux-user: Add support for 'clock_nanosleep_time64()' and 'clock_adjtime64()'
linux-user: Add support for 'mq_timedsend_time64()' and 'mq_timedreceive_time64()'
linux-user: fix target_to_host_timespec64()
linux-user: Fix 'mq_timedsend()' and 'mq_timedreceive()'
linux-user: detect mismatched ELF ABI in qemu-mips[n32][el]
linux-user: Add strace support for printing arguments for ioctls used for terminals and serial lines
linux-user: Add missing termbits types and values definitions
linux-user: Add generic 'termbits.h' for some archs
linux-user: Add strace support for printing arguments of some clock and time functions
linux-user: Add an api to print enumareted argument values with strace
linux-user: Add strace support for printing arguments of syscalls used to lock and unlock memory
linux-user: Add strace support for printing arguments of truncate()/ftruncate() and getsid()
linux-user: Make cpu_env accessible in strace.c
linux-user: syscall: ioctls: support DRM_IOCTL_I915_GETPARAM
linux-user: Fix 'clock_nanosleep()' implementation
linux-user: Fix 'semop()' and 'semtimedop()' implementation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200813071421.2509-4-zhiwei_liu@c-sky.com>
[rth: Fix merge conflict with NO_SIGNALING_NANS; use bool for predicates.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200813071421.2509-3-zhiwei_liu@c-sky.com>
[rth: Use FloatRoundMode for conversion functions.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This patch implements operations for bfloat16 except conversion and some misc
operations. We also add FloatFmt and pack/unpack interfaces for bfloat16.
As they are both static fields, we can't make a sperate patch for them.
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200813071421.2509-2-zhiwei_liu@c-sky.com>
[rth: Use FloatRelation for comparison operations.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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This float16 predicate was missing from the normal set.
Signed-off-by: Stephen Long <steplong@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Message-Id: <1596102747-20226-4-git-send-email-chihmin.chao@sifive.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Implement them in softfloat and remove the local versions in riscv.
Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1596102747-20226-2-git-send-email-chihmin.chao@sifive.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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'remotes/dgilbert/tags/pull-migration-20200828a' into staging
Migration and virtiofsd pull 2020-08-28
Migration:
vsock support for migration
minor fixes
virtiofsd:
Disable remote posix locks by default - because we
never supported blocking variants and this breaks things
Some prep work for un/less priviliged modes
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
# gpg: Signature made Fri 28 Aug 2020 13:43:18 BST
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-20200828a:
virtiofsd: probe unshare(CLONE_FS) and print an error
virtiofsd: drop CAP_DAC_READ_SEARCH
virtiofsd: Remove "norace" from cmdline help and docs
virtiofsd: Disable remote posix locks by default
migration: tls: fix memory leak in migration_tls_get_creds
migration: improve error reporting of block driver state name
migration: add vsock as data channel support
migration: unify the framework of socket-type channel
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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'remotes/pmaydell/tags/pull-target-arm-20200828' into staging
target-arm queue:
* target/arm: Cleanup and refactoring preparatory to SVE2
* armsse: Define ARMSSEClass correctly
* hw/misc/unimp: Improve information provided in log messages
* hw/qdev-clock: Avoid calling qdev_connect_clock_in after DeviceRealize
* hw/arm/xilinx_zynq: Call qdev_connect_clock_in() before DeviceRealize
* hw/net/allwinner-sun8i-emac: Use AddressSpace for DMA transfers
* hw/sd/allwinner-sdhost: Use AddressSpace for DMA transfers
* target/arm: Fill in the WnR syndrome bit in mte_check_fail
* target/arm: Clarify HCR_EL2 ARMCPRegInfo type
* hw/arm/musicpal: Use AddressSpace for DMA transfers
* hw/clock: Minor cleanups
* hw/arm/sbsa-ref: fix typo breaking PCIe IRQs
# gpg: Signature made Fri 28 Aug 2020 10:23:02 BST
# gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg: issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20200828: (35 commits)
target/arm: Convert sq{, r}dmulh to gvec for aa64 advsimd
target/arm: Convert integer multiply-add (indexed) to gvec for aa64 advsimd
target/arm: Convert integer multiply (indexed) to gvec for aa64 advsimd
target/arm: Generalize inl_qrdmlah_* helper functions
target/arm: Tidy SVE tszimm shift formats
target/arm: Split out gen_gvec_ool_zz
target/arm: Split out gen_gvec_ool_zzz
target/arm: Split out gen_gvec_ool_zzp
target/arm: Merge helper_sve_clr_* and helper_sve_movz_*
target/arm: Split out gen_gvec_ool_zzzp
target/arm: Use tcg_gen_gvec_bitsel for trans_SEL_pppp
target/arm: Clean up 4-operand predicate expansion
target/arm: Merge do_vector2_p into do_mov_p
target/arm: Rearrange {sve,fp}_check_access assert
target/arm: Split out gen_gvec_fn_zzz, do_zzz_fn
target/arm: Split out gen_gvec_fn_zz
qemu/int128: Add int128_lshift
armsse: Define ARMSSEClass correctly
hw/misc/unimp: Display the offset with width of the region size
hw/misc/unimp: Display the value with width of the access size
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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This patch introduces functionality for following time64 syscalls:
*utimensat_time64()
int utimensat(int dirfd, const char *pathname,
const struct timespec times[2], int flags);
-- change file timestamps with nanosecond precision --
man page: https://man7.org/linux/man-pages/man2/utimensat.2.html
*semtimedop_time64()
int semtimedop(int semid, struct sembuf *sops, size_t nsops,
const struct timespec *timeout);
-- System V semaphore operations --
man page: https://www.man7.org/linux/man-pages/man2/semtimedop.2.html
Implementation notes:
Syscall 'utimensat_time64()' is implemented in similar way as its
regular variants only difference being that time64 converting function
is used to convert values of 'struct timespec' between host and target
('target_to_host_timespec64()').
For syscall 'semtimedop_time64()' and additional argument is added
in function 'do_semtimedop()' through which the aproppriate 'struct timespec'
converting function is called (false for regular target_to_host_timespec()
and true for target_to_host_timespec64()). For 'do_ipc()' a
check was added as that additional argument: 'TARGET_ABI_BITS == 64'.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200824223050.92032-3-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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'sched_rr_get_interval_time64()'
This patch implements functionality for following time64 syscalls:
*rt_sigtimedwait_time64()
This is a year 2038 safe variant of syscall:
int rt_sigtimedwait(const sigset_t *set, siginfo_t *info,
const struct timespec *timeout, size_t sigsetsize)
--synchronously wait for queued signals--
man page: https://man7.org/linux/man-pages/man2/rt_sigtimedwait.2.html
*sched_rr_get_interval_time64()
This is a year 2038 safe variant of syscall:
int sched_rr_get_interval(pid_t pid, struct timespec *tp)
--get the SCHED_RR interval for the named process--
man page: https://man7.org/linux/man-pages/man2/sched_rr_get_interval.2.html
Implementation notes:
These syscalls were implemented in similar ways like
'rt_sigtimedwait()' and 'sched_rr_get_interval()' except
that functions 'target_to_host_timespec64()' and
'host_to_target_timespec64()' were used to convert values
of 'struct timespec' between host and target.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200824192116.65562-3-Filip.Bozuta@syrmia.com>
[lv: add missing defined(TARGET_NR_rt_sigtimedwait_time64)]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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This patch implements functionality for following time64 syscall:
*clock_nanosleep_time64()
This is a year 2038 safe vairant of syscall:
int clock_nanosleep(clockid_t clockid, int flags,
const struct timespec *request,
struct timespec *remain)
--high-resolution sleep with specifiable clock--
man page: https://man7.org/linux/man-pages/man2/clock_nanosleep.2.html
*clock_adjtime64()
This is a year 2038 safe variant of syscall:
int clock_adjtime(clockid_t clk_id, struct timex *buf)
--tune kernel clock--
man page: https://man7.org/linux/man-pages/man2/clock_adjtime.2.html
Implementation notes:
Syscall 'clock_nanosleep_time64()' was implemented similarly
to syscall 'clock_nanosleep()' except that 'host_to_target_timespec64()'
and 'target_to_host_timespec64()' were used instead of the regular
'host_to_target_timespec()' and 'target_to_host_timespec()'.
For 'clock_adjtime64()' a 64-bit target kernel version of 'struct timex'
was defined in 'syscall_defs.h': 'struct target__kernel_timex'.
This type was used to convert the values of 64-bit timex type between
host and target. For this purpose a 64-bit timex converting functions
'target_to_host_timex64()' and 'host_to_target_timex64()'. An existing
function 'copy_to_user_timeval64()' was used to convert the field
'time' which if of type 'struct timeval' from host to target.
Function 'copy_from_user_timveal64()' was added in this patch and
used to convert the 'time' field from target to host.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200824192116.65562-2-Filip.Bozuta@syrmia.com>
[lv: add missing ifdef's]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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An assertion failure is raised during request processing if
unshare(CLONE_FS) fails. Implement a probe at startup so the problem can
be detected right away.
Unfortunately Docker/Moby does not include unshare in the seccomp.json
list unless CAP_SYS_ADMIN is given. Other seccomp.json lists always
include unshare (e.g. podman is unaffected):
https://raw.githubusercontent.com/seccomp/containers-golang/master/seccomp.json
Use "docker run --security-opt seccomp=path/to/seccomp.json ..." if the
default seccomp.json is missing unshare.
Cc: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200727190223.422280-4-stefanha@redhat.com>
Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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virtiofsd does not need CAP_DAC_READ_SEARCH because it already has
the more powerful CAP_DAC_OVERRIDE. Drop it from the list of
capabilities.
This is important because container runtimes may not include
CAP_DAC_READ_SEARCH by default. This patch allows virtiofsd to reduce
its capabilities when running inside a Docker container.
Note that CAP_DAC_READ_SEARCH may be necessary again in the future if
virtiofsd starts using open_by_handle_at(2).
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200727190223.422280-2-stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Commit 93bb3d8d4cda ("virtiofsd: remove symlink fallbacks") removed
the implementation of the "norace" option, so remove it from the
cmdline help and the documentation too.
Signed-off-by: Sergio Lopez <slp@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20200717121110.50580-1-slp@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Right now we enable remote posix locks by default. That means when guest
does a posix lock it sends request to server (virtiofsd). But currently
we only support non-blocking posix lock and return -EOPNOTSUPP for
blocking version.
This means that existing applications which are doing blocking posix
locks get -EOPNOTSUPP and fail. To avoid this, people have been
running virtiosd with option "-o no_posix_lock". For new users it
is still a surprise and trial and error takes them to this option.
Given posix lock implementation is not complete in virtiofsd, disable
it by default. This means that posix locks will work with-in applications
in a guest but not across guests. Anyway we don't support sharing
filesystem among different guests yet in virtiofs so this should
not lead to any kind of surprise or regression and will make life
little easier for virtiofs users.
Reported-by: Aa Aa <jimbothom@yandex.com>
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Currently migration_tls_get_creds() adds the reference of creds
but there was no place to unref it. So the OBJECT(creds) will
never be freed and result in memory leak.
The leak stack:
Direct leak of 104 byte(s) in 1 object(s) allocated from:
#0 0xffffa88bd20b in __interceptor_malloc (/usr/lib64/libasan.so.4+0xd320b)
#1 0xffffa7f0cb1b in g_malloc (/usr/lib64/libglib-2.0.so.0+0x58b1b)
#2 0x14b58cb in object_new_with_type qom/object.c:634
#3 0x14b597b in object_new qom/object.c:645
#4 0x14c0e4f in user_creatable_add_type qom/object_interfaces.c:59
#5 0x141c78b in qmp_object_add qom/qom-qmp-cmds.c:312
#6 0x140e513 in qmp_marshal_object_add qapi/qapi-commands-qom.c:279
#7 0x176ba97 in do_qmp_dispatch qapi/qmp-dispatch.c:165
#8 0x176bee7 in qmp_dispatch qapi/qmp-dispatch.c:208
#9 0x136e337 in monitor_qmp_dispatch monitor/qmp.c:150
#10 0x136eae3 in monitor_qmp_bh_dispatcher monitor/qmp.c:239
#11 0x1852e93 in aio_bh_call util/async.c:89
#12 0x18531b7 in aio_bh_poll util/async.c:117
#13 0x18616bf in aio_dispatch util/aio-posix.c:459
#14 0x1853f37 in aio_ctx_dispatch util/async.c:268
#15 0xffffa7f06a7b in g_main_context_dispatch (/usr/lib64/libglib-2.0.so.0+0x52a7b)
Since we're fine to use the borrowed reference when using the creds,
so just remove the object_ref() in migration_tls_get_creds().
Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com>
Message-Id: <20200722033228.71-1-yezhenyu2@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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With blockdev, a BlockDriverState may not have a device name,
so using a node name is required as an alternative.
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200827111606.1408275-2-berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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The vsock channel is more widely use in some new features, for example,
the Nitro/Enclave. It can also be used as the migration channel.
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Message-Id: <20200806074030.174-3-longpeng2@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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