Use libxl__zallocs instead of plain mallocs + memset.
Coverity-ID: 1055889
Signed-off-by: Matthew Daley <mattd@bugfuzz.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
If initializing the ctx's lock fails, don't keep going, but instead
error out.
Coverity-ID: 1055289
Signed-off-by: Matthew Daley <mattd@bugfuzz.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
...from libxl_cpuid_parse_config_xend. value is unsigned so this doesn't
work, and either way the following comparison on it being bigger than 3
does what was intended here anyway.
Coverity-ID: 1055614
Signed-off-by: Matthew Daley <mattd@bugfuzz.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
It could, even if only in theory, be fd 0.
(This is not the same as commit 4b62556b57!)
Coverity-ID: 1055895
Signed-off-by: Matthew Daley <mattd@bugfuzz.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
The ptr calculation shall take the offset into the page into account
when ptr is valid.
Reported regression on NetBSD's port-xen with last known working libxen
being rev 2.9. This corrupts the kernel symbol table when the table is
not loaded on a page boundary.
Issue was tracked down by FastIce and Jeff Rizzo. See also
http://mail-index.netbsd.org/port-xen/2013/10/16/msg008088.html
Signed-off-by: Jean-Yves Migeon <jym@NetBSD.org>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Load OVMF from (100000000ULL - sizeof(ovmf)) to 0xFFFFFFFF, with proper
rounding down.
Tested with OVMF release build (1 MB) and debug build (2 MB), both
worked fine.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
This should result in QEMU *not* adding the xen-platform device.
Since QEMU 1.6, this can be achieved by using a different qemu machine.
The one used by libxl is "xenfv", but using QEMU >=1.6 with "-machine
pc,accel=xen" works as well with only one difference compared to
"xenfv", there is no xen-platform device.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Update the comment to clarify that libxl_sigchld_owner_libxl_always
implies having only one libxl_ctx, and that
libxl_sigchld_owner_mainloop requires one call to
libxl_childproc_exited per ctx.
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Checking the logfile_w fd for -1 on failure is no longer true, because
libxl__create_qemu_logfile will now return ERROR_FAIL on failure which
is -3.
While there also add an error check for opening /dev/null.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Coverity ID: 1055290
Calling LIBXL__LOG_ERRNO(ctx,) with a ctx pointer we have just failed to
allocate is going to end badly. Opencode a suitable use of xtl_log() instead.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Ian Campbell <Ian.Campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Coverity ID 1055563
In the original function, mmap() could be called with a length of -1 if the
second lseek failed and the caller had not provided max_size.
While fixing up this error, improve the logging of other error paths. I know
from personal experience that debugging failures function is rather difficult
given only "xc_dom_malloc_filemap: failed (on file <somefile>)" in the logs.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Ian Campbell <Ian.Campbell@citrix.com>
Acked-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
If the console or store mfn chunks are not present in the migration stream,
stack junk gets reported for the mfns.
XenServer had a very hard to track down VM corruption issue caused by exactly
this issue. Xenconsoled would connect to a junk mfn and incremented the ring
pointer if the junk happend to look like a valid gfn.
Coverity ID: 1056093 1056094
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Ian Campbell <Ian.Campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
An application which uses libxl_osevent_register_hooks, and doesn't
use libxl_sigchld_owner_mainloop, would never properly experience the
deaths of its (libxl) children.
This is because the SIGCHLD self pipe would be handled using ad-hoc
code in beforepoll_internal and afterpoll_internal. However, this is
no good if application is using the fd registration system instead; in
that case these functions would not be called and nothing would deal
with readability of the self pipe.
Fix this as follows:
The SIGCHLD self pipe now is now dealt with by a standard libxl__ev_fd
handler, which is registered and deregistered along with the SIGCHLD
handler itself. The handler function subsumes the ad-hoc response
code removed from beforepoll_internal, and the functionality of
libxl__fork_selfpipe_woken.
This is also tidier as the SIGCHLD self pipe is no longer touched
outside libxl_fork.c other than in ctx initialisation and teardown.
(The ad-hoc arrangements for poller->wakeup_pipe in
beforepoll_internal and afterpoll_internal are OK because the
libxl__poller mechanism exists to wake up threads which are sitting
inside libxl's poll loop, so is not applicable to the application's
event loop.)
Reported-by: Bamvor Jian Zhang <bjzhang@suse.com>
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Bamvor Jian Zhang <bjzhang@suse.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Jim Fehlig <jfehlig@suse.com>
Previously, libxl_sigchld_owner_libxl_always was mishandled. It would
result in libxl paying no attention to the sigchld self pipe.
Fix this by fixing chldmode_ours so that it returns true iff we are
supposed to be handling SIGCHLD.
Additionally, we arrange to use chldmode_ours everywhere where we are
installing/removing signal handlers and/or deciding whether to check
the self pipe, etc. This means it needs a new "creating" flag
argument for the benefit of libxl__ev_child_fork, which needs to
install the signal handler in libxl_sigchld_owner_libxl even if there
are not currently any children.
ctx->childproc_hooks->chldowner is now interpreted only by
chldmode_ours.
Reported-by: Bamvor Jian Zhang <bjzhang@suse.com>
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Bamvor Jian Zhang <bjzhang@suse.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Jim Fehlig <jfehlig@suse.com>
---
v2: Get sense of chldmode test right in perhaps_removehandler (!)
We are going to want the gc for libxl__ev_fd_register.
No functional change in this patch. Simply change the argument types,
and the actual arguments from ctx to gc. Inside these functions, use
CTX (the macro which uses gc) rather than the old formal parameter
ctx.
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
The current usage prevents naming a vif "dev". Although the current syntax is
documented in Squeeze's ip(8) it appears that this was a documentation bug.
Newer versions of the man page describe the new syntax used here and Squeeze's
implementation accepts it as well.
This is Debian bug #705659.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=705659
Mike provided the initial patch to tools/hotplug/Linux/xen-network-common.sh
and Ian extended it to catch some cases in vif-* too.
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Mike <debian@good-with-numbers.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Release-acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Uses xc_dom_devicetree_mem which was just added. The call to this needs to be
carefully sequenced to be after xc_dom_parse_image (so we can tell which kind
of guest we are building, although we don't use this yet) and before
xc_dom_mem_init which tries to decide where to place the FDT in guest RAM.
Removes libxl_noarch which would only have been used by IA64 after this
change. Remove IA64 as part of this patch.
There is no attempt to expose this as a configuration setting for the user.
Includes a debug hook to dump the dtb to a file for inspection.
On v7 the CPU compat is currently hardcoded to cortex-a15. This likely wants
to change at some point.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
Making room for a 64 bit implementation.
Also fix a typo and stop refering to it as a bzImage, which is an x86-ism.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
The tools and the hypervisor need to agree on various aspects of the guest
environment, such as interrupt numbers, memory layout, initial register values
for registers which are implementation defined etc. Therefore move the
associated defines into the public interface headers, or create them as
necessary.
This just exposes the current de-facto standard guest layout, which may be
subject to change in the future. This deliberately does not make the guest
layout dynamic since there is currently no need.
These values should not be exposed to guests, they should find these things
out via device tree or should not be relying on implementation defined
defaults.
Various bits of the hypervisor needed to change to configure dom0 with the real
platform values while using the virtual platform configuration for guests.
Arrange for this where appropriate and plumb through as needed.
We also need to expose some 64-bit values (e.g. PSR_GUEST64_INIT) for the
benefit of 32 bit toolstacks building 64 bit guests.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
The new coding style uses the convenience macro CTX as declared in
libxl_internal.h. Substitute an invocation of this macro for its
body at the two places it occurs in libxl_utils.c.
Suggested-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Kelley Nielsen <kelleynnn@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
To conform to the new coding style, replace the invocation of
LIBXL__LOG in the function libxl_pipe() in the file libxl_utils.c
with an invocation of LOG. Create a local libxl__gc gc* for LOG
to use by invoking GC_INIT(ctx) at the top of the function, and
clean it up by invoking GC_FREE at the exit. Create a variable,
ret, to consolidate exits in one place and avoid invoking GC_FREE
twice.
Suggested-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Kelley Nielsen <kelleynnn@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Code cleanup - no functional changes
The convenience macros LOG and LOGE have been written to take the
place of the old macros in the LIBXL__LOG* family. Replace the
invocations of the old macros in the function libxl_read_file_contents()
with invocations of the corresponding new ones. Create a local
libxl__gc gc* for the new macros to use by invoking GC_INIT(ctx) at the
top of the function, and clean it up by invoking GC_FREE at the two
exit points.
Suggested-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Kelley Nielsen <kelleynnn@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Code cleanup - no functional changes
The convenience macro LOGE has been written to take the place of
LIBXL__LOG_ERRNO. LOGE depends on the existence of a local libgl__gc
*gc. Replace two invocations of LIBXL__LOG_ERRNO, which are in
functions that already have a libxl__gc *gc present, to invocations
of the new macro.
Suggested-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Kelley Nielsen <kelleynnn@gmail.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Code cleanup - no functional changes
The convenience macro GCSPRINTF has been written to be used in place
of libxl__sprintf(). Replace all calls to libxl__sprintf() in
libxl_utils.c with invocations of the new macro.
Suggested-by: Ian Campbell <Ian.Campbell@citrix.com>
Signed-off-by: Kelley Nielsen <kelleynnn@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Matthew Daley
Jean-Yves Migeon
Wei Liu
Anthony PERARD
Ian Jackson
Andrew Cooper
Roger Pau Monne
Mukesh Rathor
Mike
Ian Campbell
Kelley Nielsen