Patch http://permalink.gmane.org/gmane.comp.emulators.qemu/63472 handle
close when using tty devices (like /dev/ttyS0),
yet tty based monitor are not restoring terminal attributes (as done
with stdio based monitor), when closing qemu after that command:
$ qemu -monitor /dev/tty
the terminal is not responding until you write reset (blindly),
this patch fix it
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
v1 -> v2 coding style changes
Add a tty close callback. Right now if a guest device that is connected
to a tty-based chardev in the host is removed, the tty is not closed.
With this patch it is closed.
Example use case is connecting an emulated USB serial cable in the guest
to ttyS0 of the host using the monitor command:
usb_add serial::/dev/ttyS0
and then removing the device with:
usb_del serial::/dev/ttyS0
Signed-off-by: David Ahern <daahern@cisco.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
In case, when qemu is executed with option like
-serial /dev/ttyS0, report if there are problems with
opening of devices. At now errors are silently ignoring.
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
qemu_chr_open_fd() calls qemu_chr_generic_open(),
so qemu_chr_open_tty() doesn't need to call it.
Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Each device is represented by a QDict. The returned QObject is a QList
of all devices.
This commit should not change user output.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We're leaking file descriptors to child processes. Set FD_CLOEXEC on file
descriptors that don't need to be passed to children to stop this misbehaviour.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This function sends out the OPENED event to backends that
have drive the chardevs. The 'reset' is now a historical
artifact and we can now just call the function for what it
is.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The initial_reset sent to chardevs doesn't do much other than setting
a bool to true. Char devices are interested in the open event and
that gets sent whenever the device is opened.
Moreover, the reset logic breaks as and when qemu's bh scheduling
changes.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
chardevs have a 'can_read' function via which backends specify
the amount of data they can receive. When can_read returns > 0,
apps can start sending data. However, each chardev driver here
allows a max. of 1k bytes inspite of the backend being able to
receive more.
The best we can do here is to allocate s->max_size bytes from
the heap on each call (which is the number returned by the
backend from the can_read call).
This is an intermediate step to bump up the bytes written in
each call to 4k.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Allow any speed value which is defined for Linux
(and possibly other systems).
* Compare int values instead of double values.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Looks like these are just artifacts of vl.c being split up.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
If I am using vga and serial which is stdio and hit C-c on
serial console, qemu terminates. That is annoying for me.
So make it configurable whether signal is generated when C-c is hit.
Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The OPENED event gets sent also when qemu resets its state initially.
The consumers of the event aren't interested in receiving this event
on reset.
Patchworks-ID: 35288
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The char event RESET is emitted when a char device is opened.
Give it a better name.
Patchworks-ID: 35287
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
At init, qemu_chr_reset is always called with initial_reset_issued set to 1.
So checking for it to be set is not necessary.
Patchworks-ID: 35286
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Problem: Our file sys-queue.h is a copy of the BSD file, but there are
some additions and it's not entirely compatible. Because of that, there have
been conflicts with system headers on BSD systems. Some hacks have been
introduced in the commits 15cc923584,
f40d753718,
96555a96d7 and
3990d09adf but the fixes were fragile.
Solution: Avoid the conflict entirely by renaming the functions and the
file. Revert the previous hacks.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Now that monitor stopped using focus we can make it internal
to the mux driver.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make the mux driver send mux_in and mux_out events when switching
focus while hooking up more handlers.
stop using CharDriverState->focus in monitor.c, track state using
the mux events instead. This also removes the implicit assumtion
that a muxed monitor allways has mux channel 0.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Lets put -chardev into use now. With this patch applied chardev:name is
accepted as chardev specification everywhere, i.e. now you can:
-chardev stdio,id=ttyS0
-serial chardev:ttyS0
which does the same as '-serial stdio".
Muxing can be done this way:
-chardev stdio,id=mux,mux=on
-serial chardev:mux
-monitor chardev:mux
You can mux more than two streams.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
While being at it: create a new inet_dgram_opts() function for udp setup,
so udp can handle IPv6 now.
new cmd line syntax:
-chardev udp,id=name,host=remotehost,port=remoteport,\
localaddr=bindaddr,localport=bindport
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
new cmd line syntax: you can add mux=1 to any chardev to enable muxing,
then attach it multiple times, like this:
-chardev pty,name=mux,mux=on
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
new cmd line syntax:
unix socket:
-chardev socket,id=name,path=/path/to/socket
tcp socket:
-chardev socket,id=name,host=hostaddr|ipaddr,port=portnr
server and nowait options work as usual. Alternatively you can use
server=[on|off] + wait=[on|off] syntax.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
start switching chardevs to QemuOpts. This patch adds the
infrastructure and converts the null device.
The patch brings two new functions:
qemu_chr_open_opts()
same as qemu_chr_open(), but uses QemuOpts instead of a
option char string.
qemu_chr_parse_compat()
accepts a traditional chardev option string, returns the
corresponding QemuOpts instance, to handle backward
compatibility.
The patch also adds a new -chardev switch which can be used to create
named+unconnected chardevs, like this:
-chardev null,id=test
This uses the new qemu_chr_open_opts. Thus with this patch alone only
the null device works. The other devices will follow ...
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Notify users of the char interface whenever the file / connection is
closed.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
First step cleaning up the drives handling. This one does nothing but
removing drives_table[], still it became seriously big.
drive_get_index() is gone and is replaced by drives_get() which hands
out DriveInfo pointers instead of a table index. This needs adaption in
*tons* of places all over.
The drives are now maintained as linked list.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
If a file descriptor is passed via a message with SCM_RIGHTS ancillary
data on a unix socket, store the file descriptor for use in the
chr_read() handler. Close the file descriptor if it was not used.
The qemu_chr_get_msgfd() API provides access to the passed descriptor.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Split out tcp_chr_recv() out of tcp_chr_read() and implement it on
non-win32 using recvmsg(). This is needed for a subsequent patch
which implements SCM_RIGHTS support.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
So far a new timestamp was generated *after* a full line had been
printed. Fix this.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
As we can have multiple multiplexed terminals, timestamp control and
tracking should better take place per MuxDriver.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Type casts removing the const attribute are bad because
they hide the fact that the argument remains const.
They also result in a compiler warning (at least with MS-C).
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Work around buffer and ioctlsocket argument type signedness problems
Suppress a prototype which is unused on mingw32
Expand a macro to avoid warnings from some GCC versions
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
My previous commit, f92f8afebe, broke -vnc (spotted by Glauber Costa). This
is because it's necessary to tell when the no special display parameters have
been passed and default to SDL or VNC appropriately.
This refactors the display selection logic to be less complicated which has
the effect of fixing the regression mentioned above.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch fixes several issues around closing char devices. Affected
were pty (timer was left behind, even running), udp (no close handling
at all) and tcp (missing async IO handler cleanup). The bugs either
caused segfaults or stalled the qemu process. So far, hot-unplugging USB
serial adapters suffered from this.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6911 c046a42c-6fe2-441c-8c8c-71466251a162
