/dcde237b9b0eb1d19306e6f48c0a4e058907619f/include/uapi/linux/if_tun.h#L31
Signed-off-by: Josh Kunz
---
linux-user/ioctls.h | 20
linux-user/syscall.c | 1 +
linux-user/syscall_defs.h | 21 +
3 files changed, 42 insertions(+)
diff --git a/linux
Sorry for the late reply, response inline. Also I noticed a couple
mails ago I seemed to have removed the devel list and maintainers.
I've re-added them to the CC line.
On Wed, Jun 24, 2020 at 3:17 AM Alex Bennée wrote:
>
>
> Josh Kunz writes:
>
> > On Tue, Jun 23, 2020, 1
linux-user targets on x86.
[1]:
https://github.com/torvalds/linux/blob/bfe91da29bfad9941d5d703d45e29f0812a20724/net/netlink/af_netlink.c#L683
Signed-off-by: Josh Kunz
---
linux-user/syscall.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/linux-user/syscall.c b/linux-user
etty heavyweight approach.
Especially compared to the solution included in this series. Do you
think there's a simpler approach that involves using a daemon to do
coordination?
Thanks again for your reviews.
--
Josh Kunz
libc internals.
I agree it would be interesting to test against musl. I'm pretty sure it
would work (this patch only relies on POSIX APIs + Platform ABIs for TLS),
but it would be interesting to confirm.
--
Josh Kunz
> +child_tid = atomic_fetch_or(>managed_tid, 0);
> +/*
> + * Check if the child has already terminated by this point. If not, wait
> + * for the child to exit. As long as the trampoline is not killed by
> + * a signal, the kernel guarantees that the memory at >managed_tid
> +
Certain process-level linux features like subreapers, and PDEATHSIG,
depend on the guest's process hierarchy being emulated correctly on the
host. This change adds a test that makes sure PDEATHSIG works for a
guest process created with `clone`.
Signed-off-by: Josh Kunz
---
tests/tcg/multiarch
if a task needs to use a different
FD table.
Signed-off-by: Josh Kunz
---
linux-user/Makefile.objs | 2 +-
linux-user/fd-trans-tbl.c | 13 +++
linux-user/fd-trans-type.h | 17 +
linux-user/fd-trans.c | 3 --
linux-user/fd-trans.h | 75
y
terminated children.
* Doing the child clone directly in the TLS manager thread: This saves the
need for the trampoline process, but it causes the child process to be
parented to the wrong kernel task (the TLS thread instead of the Main
thread) breaking things like PDEATHSIG.
ciated.
* execve does not clean up the CPUs of clone'd children, for the same
reasons as `exit_group`.
Josh Kunz (5):
linux-user: Refactor do_fork to use new `qemu_clone`
linux-user: Make fd_trans task-specific.
linux-user: Make sigact_table part of the task state.
linux-user: S
when cloning children.
Signed-off-by: Josh Kunz
---
linux-user/qemu.h| 8
linux-user/signal.c | 35 +++
linux-user/syscall.c | 17 +
3 files changed, 52 insertions(+), 8 deletions(-)
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
) into a separate file.
Signed-off-by: Josh Kunz
---
linux-user/Makefile.objs | 2 +-
linux-user/clone.c | 152
linux-user/clone.h | 27 +++
linux-user/syscall.c | 376 +++
4 files changed, 365 insertions(+), 192 deletions(-)
create mode
On Tue, Feb 4, 2020 at 3:55 AM Laurent Vivier wrote:
> We should add signal 63 here, but it's becoming not very clean.
https://golang.org/issue/33746 has some discussion of the issue. The
Go maintainers wanted to clean this up rather than just adding 63. The
patch is on ice right now because it
On Mon, Jan 20, 2020 at 3:36 AM Alex Bennée wrote:
> Ahh the default build target for the BSDs is "check" but as bsd-user
> doesn't have any checks it doesn't end up building. You can force it
> with
>
> make vm-build-netbsd EXTRA_CONFIGURE_OPTS="--disable-system"
> BUILD_TARGET="all"
>
> It
ent Vivier writes:
> >
> >> Le 17/01/2020 à 20:28, Josh Kunz a écrit :
> >>> Since most calls to `gemu_log` are actually logging unimplemented
> >>> features,
> >>> this change replaces most non-strace calls to `gemu_log` with calls to
> >>> `qe
redirection. bsd-user does not currently implement any
logging redirection options, or log masking options, but this change
brings it more in line with the linux-user tree.
Signed-off-by: Josh Kunz
---
bsd-user/main.c| 29 +
bsd-user/qemu.h| 2 --
bsd-user
Now that all uses have been migrated to `qemu_log' it is no longer
needed.
Reviewed-by: Laurent Vivier
Signed-off-by: Josh Kunz
---
linux-user/main.c | 9 -
linux-user/qemu.h | 1 -
2 files changed, 10 deletions(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index 8f1d07cdd6
On Tue, Jan 28, 2020 at 7:07 AM Laurent Vivier wrote:
>
> Le 17/01/2020 à 20:28, Josh Kunz a écrit :
> > This change switches linux-user strace logging to use the newer `qemu_log`
> > logging subsystem rather than the older `gemu_log` (notice the "g")
> > logger.
gging (via the QEMU_LOG environment variable or options).
This change introduces a new log mask: `LOG_STRACE` which is used for
logging of user-mode strace messages.
Reviewed-by: Laurent Vivier
Signed-off-by: Josh Kunz
---
include/qemu/log.h | 2 +
linux-user/main.c| 30 ++-
linux-u
is slightly backwards incompatible, since now these
"unimplemented" log messages will not be logged by default.
Signed-off-by: Josh Kunz
---
linux-user/arm/cpu_loop.c | 5 ++--
linux-user/fd-trans.c | 55 +--
linux-user/syscall.c
stderr.
Tested:
* Built with clang 9 and g++ 8.3
* `make check` run with clang 9 build
* Verified:
* QEMU_STRACE/-strace still works for linux-user
* `make vm-build-netbsd EXTRA_CONFIGURE_OPTS="--disable-system" \
BUILD_TARGET="all"` passed.
Josh Kunz (4):
On Sat, Feb 1, 2020 at 4:27 AM Laurent Vivier wrote:
> This has been tested with Go (golang 1.10.1 linux/arm64, bionic) on x86_64
> fedora 31. We can avoid the failure in this case allowing the unsupported
> signals when we don't provide the "act" parameters to sigaction, only the
> "oldact" one.
On Tue, Jan 14, 2020 at 2:56 AM Alex Bennée wrote:
> Could we cut out the middle-man and just qemu_add_log(LOG_STRACE) here
> and drop the enable_strace variable.
This code has been re-factored based on Laurent's comments. In v2
`enable_strace` is still needed to avoid QEMU_LOG/-d overwriting
On Tue, Jan 14, 2020 at 1:09 AM Laurent Vivier wrote:
> This is really a special case as the flags are all given at the same
> time, could you use directly qemu_set_log() in main()?
Fixed in v2.
> > +/* Remove (subtract) the given log flags from the current log mask. */
> > +static inline void
On Tue, Jan 14, 2020 at 2:43 AM Alex Bennée wrote:
>
> As Laurent said I think LOG_UNIMP is perfectly fine for stuff we haven't
> done. I don't think any of the cases warrant LOG_GUEST_ERROR.
I've replaced `LOG_USER` with `LOG_UNIMP`. Didn't catch that mask at
first, LOG_UNIMP is indeed a better
redirection. bsd-user does not currently implement any
logging redirection options, or log masking options, but this change
brings it more in line with the linux-user tree.
Signed-off-by: Josh Kunz
---
bsd-user/main.c| 13 ++---
bsd-user/qemu.h| 2 --
bsd-user/strace.c | 32
is slightly backwards incompatible, since now these
"unimplemented" log messages will not be logged by default.
Signed-off-by: Josh Kunz
---
linux-user/arm/cpu_loop.c | 5 ++--
linux-user/fd-trans.c | 55 +--
linux-user/syscall.c
gging (via the QEMU_LOG environment variable or options).
This change introduces a new log mask: `LOG_STRACE` which is used for
logging of user-mode strace messages.
Signed-off-by: Josh Kunz
---
include/qemu/log.h | 2 +
linux-user/main.c| 30 ++-
linux-user/qemu.h| 1 -
linux-use
ot tested:
* Build/logging with bsd-user. I do not have easy access to a BSD system.
Josh Kunz (4):
linux-user: Use `qemu_log' for non-strace logging
linux-user: Use `qemu_log' for strace
linux-user: remove gemu_log from the linux-user tree
bsd-user: Replace gemu_log with qemu_l
Now that all uses have been migrated to `qemu_log' it is no longer
needed.
Signed-off-by: Josh Kunz
---
linux-user/main.c | 9 -
linux-user/qemu.h | 1 -
2 files changed, 10 deletions(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index 8f1d07cdd6..22578b1633 100644
--- a/linux
On Mon, Jan 13, 2020 at 7:06 PM Warner Losh wrote:
> The bsd-user that is in tree doesn't work. I've been trying to catch up to
> qemu head of tree, but I'm only up to 3.2... chances are the bsd-user
> changes will not change the state of things...
>
Ah good to know. Would you all prefer I
On Tue, Jan 14, 2020 at 3:02 AM Alex Bennée wrote:
>
> Josh Kunz writes:
>
>
> >
> > Not tested:
> > * Build/logging with bsd-user. I do not have easy access to a BSD
> > system.
>
> If you have the time we have vm-build-netbsd:
>
> make
redirection. bsd-user does not currently implement any
logging redirection options, or log masking options, but this change
brings it more in line with the linux-user tree.
Signed-off-by: Josh Kunz
---
bsd-user/main.c| 13 ++---
bsd-user/qemu.h| 2 --
bsd-user/strace.c | 32
gging (via the QEMU_LOG environment variable or options).
Signed-off-by: Josh Kunz
---
include/qemu/log.h | 13 ++
linux-user/main.c| 17 +-
linux-user/qemu.h| 1 -
linux-user/signal.c | 3 +-
linux-user/strace.c | 479 ++-
linux-user
o mask out
these log messages if they desire.
Signed-off-by: Josh Kunz
---
include/qemu/log.h| 2 ++
linux-user/arm/cpu_loop.c | 5 ++--
linux-user/fd-trans.c | 55 +--
linux-user/main.c | 24 +
linux-user/syscall.c
Now that all uses have been migrated to `qemu_log' it is no longer
needed.
Signed-off-by: Josh Kunz
---
linux-user/main.c | 9 -
linux-user/qemu.h | 1 -
2 files changed, 10 deletions(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index 0bf40c4d27..945b6adf3a 100644
--- a/linux
QEMU_STRACE/-strace still works for linux-user
* -no-force-user-mode-logging uses QEMU_LOG + `user_mode` or
`strace` can be set in QEMU_LOG to trigger the appropriate
logging.
Not tested:
* Build/logging with bsd-user. I do not have easy access to a BSD system.
Josh Kunz (4
Thanks for the fixes Laurent, sorry for the delay.
Josh
On Tue, Nov 5, 2019 at 1:25 AM Laurent Vivier wrote:
> Le 29/10/2019 à 23:43, Josh Kunz a écrit :
> > This change includes support for all AF_NETLINK socket options up to
> about
> > kernel version 5.4 (5.4 is not
.
This change has been built under gcc 8.3, and clang 9.0, and it passes
`make check`. The netlink options have been tested by emulating some
non-trival software that uses NETLINK socket options, but they have
not been exaustively verified.
Signed-off-by: Josh Kunz
---
linux-user/syscall.c | 98
, this is unavoidable; but for the SIGRTMIN,
SIGRTMIN+1 case, I’m not sure it’s worth it.
After considering these drawbacks, do the QEMU maintainers still think this
is the right approach for handling these libc reserved signals?
On Fri, Aug 30, 2019 at 6:26 PM Josh Kunz wrote:
> I can take o
/gdb/General-Query-Packets.html#General-Query-Packets
On Mon, Aug 26, 2019 at 1:29 AM Laurent Vivier wrote:
> Le 17/08/2019 à 01:34, Josh Kunz via Qemu-devel a écrit :
> > This is needed to support debugging PIE ELF binaries running under QEMU
> > user mode. Currentl
to swap SIGRTMIN + 1 and
> SIGRTMAX - 1
> >
> > Le 26/08/2019 à 23:10, Josh Kunz a écrit :
> > > On Wed, Aug 21, 2019 at 2:28 AM Laurent Vivier > > <mailto:laur...@vivier.eu>> wrote:
> > >
> > > Le 19/08/2019 à 23:46, Josh Kunz via Qemu-devel a
On Wed, Aug 21, 2019 at 2:28 AM Laurent Vivier wrote:
> Le 19/08/2019 à 23:46, Josh Kunz via Qemu-devel a écrit :
> > Hi all,
> >
> > I have also experienced issues with SIGRTMIN + 1, and am interested in
> > moving this patch forwards. Anything I can do here to help
is a link to the original thread this message is in reply to
in-case my mail-client doesn't set up the reply properly:
https://lists.nongnu.org/archive/html/qemu-devel/2019-07/msg01303.html
Thanks,
Josh Kunz
+cc: riku.voi...@iki.fi, I typoed the email on the first go.
On Fri, Aug 16, 2019 at 4:34 PM Josh Kunz wrote:
> This is needed to support debugging PIE ELF binaries running under QEMU
> user mode. Currently, `code_offset` and `data_offset` remain unset for
> all ELF binaries, so GDB
.
Buglink: https://bugs.launchpad.net/qemu/+bug/1528239
Signed-off-by: Josh Kunz
---
linux-user/elfload.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 3365e192eb..ceac035208 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
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