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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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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/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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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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'mq_timedreceive_time64()'
This patch implements functionality for following time64 syscalls:
*mq_timedsend_time64()
This is a year 2038 safe vairant of syscall:
int mq_timedsend(mqd_t mqdes, const char *msg_ptr,
size_t msg_len, unsigned int msg_prio,
const struct timespec *abs_timeout)
--send a message to a message queue--
man page: https://www.man7.org/linux/man-pages/man2/mq_timedsend.2.html
*mq_timedreceive_time64()
This is a year 2038 safe variant of syscall:
ssize_t mq_timedreceive(mqd_t mqdes, char *msg_ptr,
size_t msg_len, unsigned int *msg_prio,
const struct timespec *abs_timeout)
--receive a message from a message queue--
man page: https://man7.org/linux/man-pages/man3/mq_receive.3.html
Implementation notes:
These syscalls were implemented in similar ways like
'mq_timedsend()' and 'mq_timedreceive' 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: <20200824193752.67950-3-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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in 32 bit mode, drop the padding in tv_nsec. If host is 64bit and target
is 32bit, the padding bytes will be copied from the target and as the
kernel checks the value, the syscall exits with EINVAL.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200827070449.2386007-1-laurent@vivier.eu>
Fixes: c6c8d1026e75 ("linux-user/syscall: Add support for clock_gettime64/clock_settime64")
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Implementations of syscalls 'mq_timedsend()' and 'mq_timedreceive()'
in 'syscall.c' use functions 'target_to_host_timespec()' and
'host_to_target_timespec()' to transfer the value of 'struct timespec'
between target and host. However, the implementations don't check whether
this conversion succeeds and thus can cause an unaproppriate error instead
of the 'EFAULT (Bad address)' which is supposed to be set if the conversion
from target to host fails. This was confirmed with the modified LTP
test suite where test cases with a bad adress for 'timespec' were
added. This modified test suite can be found at:
https://github.com/bozutaf/ltp
Without the changes from this patch the bad adress testcase for 'mq_timedsend()'
succeds unexpectedly, while the test returns errno 'ETIMEOUT' for
'mq_timedreceive()':
mq_timedsend01.c:190: FAIL: mq_timedsend() returned 0, expected -1: SUCCESS (0)
mq_timedreceive01.c:178: FAIL: mq_timedreceive() failed unexpectedly,
expected EFAULT: ETIMEDOUT (110)
After the changes from this patch, testcases for both syscalls fail with EFAULT
as expected, which is the same test result that is received with native execution:
mq_timedsend01.c:187: PASS: mq_timedsend() failed expectedly: EFAULT (14)
mq_timedreceive01.c:180: PASS: mq_timedreceive() failed expectedly: EFAULT (14)
(Patch with this new test case will be sent to LTP mailing list soon)
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200824193752.67950-2-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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MIPS provides 2 ILP32 ABIs, and therefore 4 possible qemu-mips binaries
with 2 pairs using the same endianess and bitness.
This could lead to an O32 image loading in the N32 binary or vice versa
and in cryptic errors (if lucky that the CPU doesn't match the FPU used)
like :
qemu: Unexpected FPU mode (o32 ELF loaded to qemu-mipsn32[el])
ELF binary's NaN mode not supported by CPU (n32 -> qemu-mips[el])
Add an ABI check macro that could be used while checking the ELF header
that relies in the ABI2 flag to identify n32 binaries and abort instead
early with a more descriptive error :
Invalid ELF image for this architecture
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200823101703.18451-1-carenas@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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terminals and serial lines
Functions "print_ioctl()" and "print_syscall_ret_ioctl()" are used
to print arguments of "ioctl()" with "-strace". These functions
use "thunk_print()", which is defined in "thunk.c", to print the
contents of ioctl's third arguments that are not basic types.
However, this function doesn't handle ioctls of group ioctl_tty which
are used for terminals and serial lines. These ioctls use a type
"struct termios" which thunk type is defined in a non standard
way using "STRUCT_SPECIAL()". This means that this type is not decoded
regularly using "thunk_convert()" and uses special converting functions
"target_to_host_termios()" and "host_to_target_termios()", which are defined
in "syscall.c" to decode it's values.
For simillar reasons, this type is also not printed regularly using
"thunk_print()". That is the reason why a separate printing function
"print_termios()" is defined in file "strace.c". This function decodes
and prints flag values of the "termios" structure.
Implementation notes:
Function "print_termios()" was implemented in "strace.c" using
an existing function "print_flags()" to print flag values of
"struct termios" fields. Also, recently implemented function
"print_enums()" was also used to print enumareted values which
are contained in the fields of 'struct termios'.
These flag values were defined using an existing macro "FLAG_TARGET()"
that generates aproppriate target flag values and string representations
of these flags. Also, the recently defined macro "ENUM_TARGET()" was
used to generate aproppriate enumarated values and their respective
string representations.
Function "print_termios()" was declared in "qemu.h" so that it can
be accessed in "syscall.c". Type "StructEntry" defined in
"exec/user/thunk.h" contains information that is used to decode
structure values. Field "void print(void *arg)" was added in this
structure as a special print function. Also, function "thunk_print()"
was changed a little so that it uses this special print function
in case it is defined. This printing function was instantiated with
the defined "print_termios()" in "syscall.c" in "struct_termios_def".
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200723210233.349690-4-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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This patch introduces missing target types ('target_flag_t', 'target_cc_t',
'target_speed_t') in a few 'termibts.h' header files. Also, two missing
values ('TARGET_IUTF8' and 'TARGET_EXTPROC') were also added. These values
were also added in file 'syscall.c' in bitmask tables 'iflag_tbl[]' and
'lflag_tbl[]' which are used to convert values of 'struct termios' between
target and host.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200723210233.349690-3-Filip.Bozuta@syrmia.com>
[lv: keep TARGET_NCCS definition in xtensa/termbits.h]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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This patch introduces a generic 'termbits.h' file for following
archs: 'aarch64', 'arm', 'i386, 'm68k', 'microblaze', 'nios2',
'openrisc', 'riscv', 's390x', 'x86_64'.
Since all of these archs have the same termios flag values and
same ioctl_tty numbers, there is no need for a separate 'termbits.h'
file for each one of them. For that reason one generic 'termbits.h'
file was added for all of them and an '#include' directive was
added for this generic file in every arch 'termbits.h' file.
Also, some of the flag values that were missing were added in this
generic file so that it matches the generic 'termibts.h' and 'ioctls.h'
files from the kernel: 'asm-generic/termbits.h' and 'asm-generic/ioctls.h'.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200723210233.349690-2-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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functions
This patch implements strace argument printing functionality for following syscalls:
* clock_getres, clock_gettime, clock_settime - clock and time functions
int clock_getres(clockid_t clockid, struct timespec *res)
int clock_gettime(clockid_t clockid, struct timespec *tp)
int clock_settime(clockid_t clockid, const struct timespec *tp)
man page: https://man7.org/linux/man-pages/man2/clock_getres.2.html
* gettimeofday - get time
int gettimeofday(struct timeval *tv, struct timezone *tz)
man page: https://man7.org/linux/man-pages/man2/gettimeofday.2.html
* getitimer, setitimer - get or set value of an interval timer
int getitimer(int which, struct itimerval *curr_value)
int setitimer(int which, const struct itimerval *new_value,
struct itimerval *old_value)
man page: https://man7.org/linux/man-pages/man2/getitimer.2.html
Implementation notes:
All of the syscalls have some structue types as argument types and thus
a separate printing function was stated in file "strace.list" for each
of them. All of these functions use existing functions for their
appropriate structure types ("print_timeval()" and "print_timezone()").
Functions "print_timespec()" and "print_itimerval()" were added in this
patch so that they can be used to print types "struct timespec" and
"struct itimerval" used by some of the syscalls. Function "print_itimerval()"
uses the existing function "print_timeval()" to print fields of the
structure "struct itimerval" that are of type "struct timeval".
Function "print_enums()", which was introduced in the previous patch, is used
to print the interval timer type which is the first argument of "getitimer()"
and "setitimer()". Also, this function is used to print the clock id which
is the first argument of "clock_getres()" and "clock_gettime()". For that
reason, the existing function "print_clockid()" was removed in this patch.
Existing function "print_clock_adjtime()" was also changed for this reason
to use "print_enums()".
The existing function "print_timeval()" was changed a little so that it
prints the field names beside the values.
Syscalls "clock_getres()" and "clock_gettime()" have the same number
and types of arguments and thus their print functions "print_clock_getres"
and "print_clock_gettime" share a common definition in file "strace.c".
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200811164553.27713-6-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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This patch introduces a type 'struct enums' and function 'print_enums()'
that can be used to print enumerated argument values of some syscalls
in strace. This can be used in future strace implementations.
Also, macros 'ENUM_GENERIC()', 'ENUM_TARGET()' and 'ENUM_END', are
introduced to enable automatic generation of aproppriate enumarated
values and their repsective string representations (these macros are
exactly the same as 'FLAG_GENERIC()', 'FLAG_TARGET()' and 'FLAG_END').
Future patches are planned to modify all existing print functions in
'strace.c' that print arguments of syscalls with enumerated values to
use this new api.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200811164553.27713-5-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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lock and unlock memory
This patch implements strace argument printing functionality for following syscalls:
* mlock, munlock, mlockall, munlockall - lock and unlock memory
int mlock(const void *addr, size_t len)
int munlock(const void *addr, size_t len)
int mlockall(int flags)
int munlockall(void)
man page: https://man7.org/linux/man-pages/man2/mlock.2.html
Implementation notes:
Syscall mlockall() takes an argument that is composed of predefined values
which represent flags that determine the type of locking operation that is
to be performed. For that reason, a printing function "print_mlockall" was
stated in file "strace.list". This printing function uses an already existing
function "print_flags()" to print the "flags" argument. These flags are stated
inside an array "mlockall_flags" that contains values of type "struct flags".
These values are instantiated using an existing macro "FLAG_TARGET()" that
crates aproppriate target flag values based on those defined in files
'/target_syscall.h'. These target flag values were changed from
"TARGET_MLOCKALL_MCL*" to "TARGET_MCL_*" so that they can be aproppriately set
and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT"
was added in this patch. This value was also added in "syscall.c" in function
"target_to_host_mlockall_arg()". Because this flag value was added in kernel
version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and
in "strace.c") as to support older kernel versions.
The other syscalls have only primitive argument types, so the
rest of the implementation was handled by stating an appropriate
printing format in file "strace.list". Syscall mlock2() is not implemented in
"syscall.c" and thus it's argument printing is not implemented in this patch.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200811164553.27713-4-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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truncate()/ftruncate() and getsid()
This patch implements strace argument printing functionality for following syscalls:
* truncate, ftruncate - truncate a file to a specified length
int truncate/truncate64(const char *path, off_t length)
int ftruncate/ftruncate64(int fd, off_t length)
man page: https://man7.org/linux/man-pages/man2/truncate.2.html
* getsid - get session ID
pid_t getsid(pid_t pid)
man page: https://man7.org/linux/man-pages/man2/getsid.2.html
Implementation notes:
Syscalls truncate/truncate64 take string argument types and thus a
separate print function "print_truncate/print_truncate64" is stated in
file "strace.list". This function is defined and implemented in "strace.c"
by using an existing function used to print string arguments: "print_string()".
For syscall ftruncate64, a separate printing function was also stated in
"strace.c" as it requires a special kind of handling.
The other syscalls have only primitive argument types, so the rest of the
implementation was handled by stating an appropriate printing format in file
"strace.list".
Function "regpairs_aligned()" was cut & pasted from "syscall.c" to "qemu.h"
as it is used by functions "print_truncate64()" and "print_ftruncate64()"
to print the offset arguments of "truncate64()" and "ftruncate64()".
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200811164553.27713-3-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Variable "cpu_env" is used in file "syscall.c" to store
the information about the cpu environment. This variable
is used because values of some syscalls can vary between
cpu architectures. This patch makes the "cpu_env" accessible
in "strace.c" so it can enable aproppriate "-strace" argument
printing for these syscalls. This will be a useful addition
for future "-strace" implementation in QEMU.
Implementation notes:
Functions "print_syscall()" and "print_syscall_ret()" which
are stated and defined in "qemu.h" and "strace.c" respectively
are used to print syscall arguments before and after syscall
execution. These functions were changed with addition of a
new argument "void *cpu_env". Strucute "struct syscallname"
in "strace.c" is used to store the information about syscalls.
Fields "call" and "result" represent pointers to functions which
are used to print syscall arguments before and after execution.
These fields were also changed with addition of a new "void *"
argumetn.
Also, all defined "print_*" and "print_syscall_ret*" functions
in "strace.c" were changed to have the new "void *cpu_env".
This was done to not cause build errors (even though none of
these functions use this argument).
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200811164553.27713-2-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Another DRM_IOCTL_I915 patches will be sent next.
Signed-off-by: Chen Gang <chengang@emindsoft.com.cn>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200802133938.12055-1-chengang@emindsoft.com.cn>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Implementation of syscall 'clock_nanosleep()' in 'syscall.c' uses
functions 'target_to_host_timespec()' and 'host_to_target_timespec()'
to transfer the value of 'struct timespec' between target and host.
However, the implementation doesn't check whether this conversion
succeeds and thus can return an unaproppriate error instead of 'EFAULT'
that is expected. This was confirmed with the modified LTP test suite
where testcases with bad 'struct timespec' adress for 'clock_nanosleep()'
were added. This modified LTP suite can be found at:
https://github.com/bozutaf/ltp
(Patch with this new test case will be sent to LTP mailing list soon)
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200727201326.401519-1-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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The implementations of syscalls 'semop()' and 'semtimedop()' in
file 'syscall.c' use function 'target_to_host_sembuf()' to convert
values of 'struct sembuf' from host to target. However, before this
conversion it should be check whether the number of semaphore operations
'nsops' is not bigger than maximum allowed semaphor operations per
syscall: 'SEMOPM'. In these cases, errno 'E2BIG' ("Arg list too long")
should be set. But the implementation will set errno 'EFAULT' ("Bad address")
in this case since the conversion from target to host in this case fails.
This was confirmed with the LTP test for 'semop()' ('ipc/semop/semop02') in
test case where 'nsops' is greater than SEMOPM with unaproppriate errno EFAULT:
semop02.c:130: FAIL: semop failed unexpectedly; expected: E2BIG: EFAULT (14)
This patch changes this by adding a check whether 'nsops' is bigger than
'SEMOPM' before the conversion function 'target_to_host_sembuf()' is called.
After the changes from this patch, the test works fine along with the other
LTP testcases for 'semop()'):
semop02.c:126: PASS: semop failed as expected: E2BIG (7)
Implementation notes:
A target value ('TARGET_SEMOPM') was added for 'SEMOPM' as to be sure
in case the value is not available for some targets.
Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200818180722.45089-1-Filip.Bozuta@syrmia.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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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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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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