FDFLUSH is used for flushing buffers of floppy drives. Support in
QEMU is needed because some of Debian packages use this ioctl while
running post-build tests. One such example is 'tar' package.
Signed-off-by: Yunqiang Su <ysu@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-5-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
FIOGETOWN and FIOSETOWN ioctls have platform-specific definitions,
hence non-standard definition in QEMU too.
Other than that, they both have a single integer argument, and their
functionality is emulated in a straightforward way.
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-4-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
RNDRESEEDCRNG is a newer ioctl (added in kernel 4.17), and an
"ifdef" guard is used for that reason in this patch.
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-3-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The SIOCGSTAMP symbol was previously defined in the
asm-generic/sockios.h header file. QEMU sees that header
indirectly via sys/socket.h
In linux kernel commit 0768e17073dc527ccd18ed5f96ce85f9985e9115
the asm-generic/sockios.h header no longer defines SIOCGSTAMP.
Instead it provides only SIOCGSTAMP_OLD, which only uses a
32-bit time_t on 32-bit architectures.
The linux/sockios.h header then defines SIOCGSTAMP using
either SIOCGSTAMP_OLD or SIOCGSTAMP_NEW as appropriate. If
SIOCGSTAMP_NEW is used, then the tv_sec field is 64-bit even
on 32-bit architectures
To cope with this we must now convert the old and new type from
the target to the host one.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Message-Id: <20190718130641.15294-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Implement support for translation of system call statx().
The implementation is based on "best effort" approach: if host
is capable of executing statx(), host statx() is used. If not,
the implementation includes invoking a more mature system call
fstatat() on the host side to achieve as close as possible
functionality.
Support for statx() in kernel and glibc was, however, introduced
at different points of time (the difference is more than a year):
- kernel: Linux 4.11 (30 April 2017)
- glibc: glibc 2.28 (1 Aug 2018)
In this patch, the availability of statx() support is established
via __NR_statx (if it is defined, statx() is considered available).
This coincedes with statx() introduction in kernel.
However, the structure statx definition may not be available in
any header for hosts with glibc older than 2.28 (and it is, by
design, to be defined in one of glibc headers), even though the
full statx() functionality may be supported in kernel. Hence, a
structure "target_statx" is defined in this patch, to remove that
dependency on glibc headers, and to use statx() functionality as
soon as the host kernel is capable of supporting it. Such statx
structure definition is used for both target and host structures
statx (of course, this doesn't mean the endian arrangement is
the same on target and host - the endian conversion is done in
all necessary cases).
Signed-off-by: Aleksandar Rikalo <arikalo@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1561718618-20218-2-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
When we have updated kernel headers to 5.2-rc1 we have introduced
new syscall numbers that can be not supported by older kernels
and fail with ENOSYS while the guest emulation succeeded before
because the syscalls were emulated with ipc().
This patch fixes the problem by using ipc() if the new syscall
returns ENOSYS.
Fixes: 86e636951d ("linux-user: fix __NR_semtimedop undeclared error")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20190529084804.25950-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Since Linux 2.6 the stat syscalls have mostly supported nanosecond
components for each of the file-related timestamps.
QEMU user mode emulation currently does not pass through the nanosecond
portion of the timestamp, even when the host system fills in the value.
This results in a mismatch when run on subsecond resolution filesystems
such as ext4 or XFS.
An example of this leading to inconsistency is cross-debootstraping a
full desktop root filesystem of Debian Buster. Recent versions of
fontconfig store the full timestamp (instead of just the second portion)
of the directory in its per-directory cache file, and checks this against
the directory to see if the cache is up-to-date. With QEMU user mode
emulation, the timestamp stored is incorrect, and upon booting the rootfs
natively, fontconfig discovers the mismatch, and proceeds to rebuild the
cache on the comparatively slow machine (low-power ARM vs x86). This
stalls the first attempt to open whatever application that incorporates
fontconfig.
This patch renames the "unused" padding trailing each timestamp element
to its nanosecond counterpart name if such an element exists in the
kernel sources for the given platform. Not all do. Then have the syscall
wrapper fill in the nanosecond portion if the host supports it, as
specified by the _POSIX_C_SOURCE and _XOPEN_SOURCE feature macros.
Recent versions of glibc only use stat64 and newfstatat syscalls on
32-bit and 64-bit platforms respectively. The changes in this patch
were tested by directly calling the stat, stat64 and newfstatat syscalls
directly, in addition to the glibc wrapper, on arm and aarch64 little
endian targets.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Message-Id: <20190522162147.26303-1-wens@kernel.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Add support for getting and setting extended private flags of a
network device via SIOCSIFPFLAGS and SIOCGIFPFLAGS ioctls.
The ioctl numeric values are platform-independent and determined by
the file include/uapi/linux/sockios.h in Linux kernel source code:
#define SIOCSIFPFLAGS 0x8934
#define SIOCGIFPFLAGS 0x8935
These ioctls get (or set) the field ifr_flags of type short in the
structure ifreq. Such functionality is achieved in QEMU by using
MK_STRUCT() and MK_PTR() macros with an appropriate argument, as
it was done for existing similar cases.
Signed-off-by: Neng Chen <nchen@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1554839486-3527-1-git-send-email-aleksandar.markovic@rt-rk.com>
Message-Id: <1558282527-22183-4-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Add support for setting the process (or process group) to receive SIGIO
or SIGURG signals when I/O becomes possible or urgent data is available,
using SIOCSPGRP ioctl.
The ioctl numeric values for SIOCSPGRP are platform-dependent and are
determined by following files in Linux kernel source tree:
arch/ia64/include/uapi/asm/sockios.h:#define SIOCSPGRP 0x8902
arch/mips/include/uapi/asm/sockios.h:#define SIOCSPGRP _IOW('s', 8, pid_t)
arch/parisc/include/uapi/asm/sockios.h:#define SIOCSPGRP 0x8902
arch/sh/include/uapi/asm/sockios.h:#define SIOCSPGRP _IOW('s', 8, pid_t)
arch/xtensa/include/uapi/asm/sockios.h:#define SIOCSPGRP _IOW('s', 8, pid_t)
arch/alpha/include/uapi/asm/sockios.h:#define SIOCSPGRP _IOW('s', 8, pid_t)
arch/sparc/include/uapi/asm/sockios.h:#define SIOCSPGRP 0x8902
include/uapi/asm-generic/sockios.h:#define SIOCSPGRP 0x8902
Hence the different definition for alpha, mips, sh4, and xtensa.
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1558282527-22183-3-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Fix support for the SIOCATMARK and SIOCGPGRP ioctls for xtensa by
correcting corresponding macro definition.
Values for TARGET_SIOCATMARK and TARGET_SIOCGPGRP are determined by
Linux kernel. Following relevant lines (obtained by grep) are from
the kernel source tree:
arch/ia64/include/uapi/asm/sockios.h:#define SIOCATMARK 0x8905
arch/mips/include/uapi/asm/sockios.h:#define SIOCATMARK _IOR('s', 7, int)
arch/parisc/include/uapi/asm/sockios.h:#define SIOCATMARK 0x8905
arch/sh/include/uapi/asm/sockios.h:#define SIOCATMARK _IOR('s', 7, int)
arch/xtensa/include/uapi/asm/sockios.h:#define SIOCATMARK _IOR('s', 7, int)
arch/alpha/include/uapi/asm/sockios.h:#define SIOCATMARK _IOR('s', 7, int)
arch/sparc/include/uapi/asm/sockios.h:#define SIOCATMARK 0x8905
include/uapi/asm-generic/sockios.h:#define SIOCATMARK 0x8905
arch/ia64/include/uapi/asm/sockios.h:#define SIOCGPGRP 0x8904
arch/mips/include/uapi/asm/sockios.h:#define SIOCGPGRP _IOR('s', 9, pid_t)
arch/parisc/include/uapi/asm/sockios.h:#define SIOCGPGRP 0x8904
arch/sh/include/uapi/asm/sockios.h:#define SIOCGPGRP _IOR('s', 9, pid_t)
arch/xtensa/include/uapi/asm/sockios.h:#define SIOCGPGRP _IOR('s', 9, pid_t)
arch/alpha/include/uapi/asm/sockios.h:#define SIOCGPGRP _IOR('s', 9, pid_t)
arch/sparc/include/uapi/asm/sockios.h:#define SIOCGPGRP 0x8904
include/uapi/asm-generic/sockios.h:#define SIOCGPGRP 0x8904
It is visible from above that xtensa should have the same definitions
as alpha, mips and sh4 already do. This patch brings QEMU to the accurate
state wrt these two ioctls.
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1558282527-22183-2-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Record the software fp control register, as set by the
osf_setsysinfo syscall. Add those masked exceptions
to fpcr_exc_enable. Do not raise a signal for masked
fp exceptions.
Fixes: https://bugs.launchpad.net/bugs/1701835
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
There are not many, and they are all simple mistakes that ended up
being committed. Remove them.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20181213223737.11793-2-pbonzini@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Userspace submits a USB Request Buffer to the kernel, optionally
discards it, and finally reaps the URB. Thunk buffers from target
to host and back.
Tested by running an i386 scanner driver on ARMv7 and by running
the PowerPC lsusb utility on x86_64. The discardurb ioctl is
not exercised in these tests.
Signed-off-by: Cortland Tölva <cst@tolva.net>
Message-Id: <20181008163521.17341-4-cst@tolva.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Original implementation for setsockopt by Chen Gang[1]; all bugs mine,
including removing assignment for optname which hopefully makes the
logic easier to follow and moving some variables to make the code
more selfcontained.
[1] http://patchwork.ozlabs.org/patch/565659/
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Co-Authored-By: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180824085601.6259-1-carenas@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Remove a "#if defined(XX) || defined(YY) || ..." with all available
targets
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180529194207.31503-16-laurent@vivier.eu>
add a per target target_fcntl.h and include the generic one from them
No code change.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180529194207.31503-2-laurent@vivier.eu>
include/uapi/asm-generic/fcntl.h insert a padding macro at
the end of the structures flock and flock64.
This macro is defined to "short __unused;" on sparc,
and "long pad[4]" on mips.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20180509231123.20864-3-laurent@vivier.eu>
Since commit 8efb2ed5ec ("linux-user: Correct signedness of
target_flock l_start and l_len fields"), flock64 structure uses
abi_llong for l_start and l_len in place of "unsigned long long"
this should force them to be aligned accordingly to the target
rules. So we can remove the padding field and the QEMU_PACKED
attribute.
I have compared the result of the following program before and
after the change:
cat -> flock64_dump <<EOF
p/d sizeof(struct target_flock64)
p/d &((struct target_flock64 *)0)->l_type
p/d &((struct target_flock64 *)0)->l_whence
p/d &((struct target_flock64 *)0)->l_start
p/d &((struct target_flock64 *)0)->l_len
p/d &((struct target_flock64 *)0)->l_pid
quit
EOF
for file in build/all/*-linux-user/qemu-* ; do
echo $file
gdb -batch -nx -x flock64_dump $file 2> /dev/null
done
The sizeof() changes because we remove the QEMU_PACKED.
The new size is 32 (except for i386 and m68k) and this is
the real size of "struct flock64" on the target architecture.
The following architectures differ:
aarch64_be, aarch64, alpha, armeb, arm, cris, hppa, nios2, or1k,
riscv32, riscv64, s390x.
For a subset of these architectures, I have checked with the following
program the new structure is the correct one:
#include <stdio.h>
#define __USE_LARGEFILE64
#include <fcntl.h>
int main(void)
{
printf("struct flock64 %d\n", sizeof(struct flock64));
printf("l_type %d\n", &((struct flock64 *)0)->l_type);
printf("l_whence %d\n", &((struct flock64 *)0)->l_whence);
printf("l_start %d\n", &((struct flock64 *)0)->l_start);
printf("l_len %d\n", &((struct flock64 *)0)->l_len);
printf("l_pid %d\n", &((struct flock64 *)0)->l_pid);
}
[I have checked aarch64, alpha, hppa, s390x]
For ARM, the target_flock64 becomes the EABI definition, so we need to
define the OABI one in place of the EABI one and use it when it is
needed.
I have also fixed the alignment value for sh4 (to align llong on 4 bytes)
(see c2e3dee6e0 "linux-user: Define target alignment size")
[We should check alignment properties for cris, nios2 and or1k]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180502215730.28162-1-laurent@vivier.eu>
Sparc as an extended sigaction structure containing
the field ka_restorer used in place of sa_restorer.
Define TARGET_ARCH_HAS_KA_RESTORER and use it
with sparc.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180402102453.9883-2-laurent@vivier.eu>
- small cleanup for xtensa registers dumping (-d cpu);
- add support for debugging linux-user process with xtensa-linux-gdb
(as opposed to xtensa-elf-gdb), which can only access unprivileged
registers;
- enable MTTCG for target/xtensa;
- cleanup in linux-user/mmap area making sure that it works correctly
with limited 30-bit-wide user address space;
- import xtensa-specific definitions from the linux kernel,
conditionalize user-only/softmmu-only code and add handlers for
signals, exceptions, process/thread creation and core registers dumping.
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Merge remote-tracking branch 'remotes/xtensa/tags/20180316-xtensa' into staging
target/xtensa linux-user support.
- small cleanup for xtensa registers dumping (-d cpu);
- add support for debugging linux-user process with xtensa-linux-gdb
(as opposed to xtensa-elf-gdb), which can only access unprivileged
registers;
- enable MTTCG for target/xtensa;
- cleanup in linux-user/mmap area making sure that it works correctly
with limited 30-bit-wide user address space;
- import xtensa-specific definitions from the linux kernel,
conditionalize user-only/softmmu-only code and add handlers for
signals, exceptions, process/thread creation and core registers dumping.
# gpg: Signature made Fri 16 Mar 2018 16:46:19 GMT
# gpg: using RSA key 51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <filippov@cadence.com>"
# gpg: aka "Max Filippov <max.filippov@cogentembedded.com>"
# gpg: aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044
* remotes/xtensa/tags/20180316-xtensa:
MAINTAINERS: fix W: address for xtensa
qemu-binfmt-conf.sh: add qemu-xtensa
target/xtensa: add linux-user support
linux-user: drop unused target_msync function
linux-user: fix target_mprotect/target_munmap error return values
linux-user: fix assertion in shmdt
linux-user: fix mmap/munmap/mprotect/mremap/shmat
target/xtensa: support MTTCG
target/xtensa: use correct number of registers in gdbstub
target/xtensa: mark register windows in the dump
target/xtensa: dump correct physical registers
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# Conflicts:
# linux-user/syscall.c
Import list of syscalls from the kernel source. Conditionalize code/data
that is only used with softmmu. Implement exception handlers. Implement
signal hander (only the core registers for now, no coprocessors or TIE).
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
We dropped the unicore32-linux-user target in commit 5e2b40f727
in 2016. Nobody has made any attempt to fix the issues that
caused us to drop it, so remove the associated code.
(The system emulation parts of unicore32 remain.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180308144733.25615-2-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Implementation of linux user emulation for RISC-V.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Michael Clark <mjc@sifive.com>
The Linux struct cmsghdr is already guaranteed to be sufficiently
aligned that CMSG_ALIGN(sizeof struct cmsghdr) is always equal
to sizeof struct cmsghdr. Stop doing the unnecessary alignment
arithmetic for host and target cmsghdr.
This follows kernel commit 1ff8cebf49ed9e9ca2 and brings our
TARGET_CMSG_* macros back into line with the kernel ones,
as well as making them easier to understand.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1513345976-22958-3-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Add the missing defines and for TARGET_MAP_STACK and TARGET_MAP_HUGETLB
for alpha, mips, ppc, x86, hppa. Fix the mmap_flags translation table
to translate MAP_HUGETLB between host and target architecture, and to
drop MAP_STACK.
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20170311183016.GA20514@ls3530.fritz.box>
[rth: Drop MAP_STACK instead of translating it, since it is ignored
in the kernel anyway. Fix tabs to spaces.]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
TARGET_MAP_TYPE needs to be 0x03 instead of 0x0f on the hppa
architecture, otherwise it conflicts with MAP_FIXED which is 0x04.
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-ID: <20170311175019.GA7195@ls3530.fritz.box>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Reading and writing to an sa_restorer member that isn't supposed to
exist corrupts user memory. Introduce TARGET_ARCH_HAS_SA_RESTORER,
similar to the kernel's __ARCH_HAS_SA_RESTORER.
Reported-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
The TARGET_MTIOCTOP/TARGET_MTIOCGET/TARGET_MTIOCPOS values
were being defined in terms of host struct types, but
these structures are such that their size might differ
on different hosts. Switch to using a target struct
definition instead.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Aleksandar Markovic