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* tools: Bump some library sonamesIan Jackson2013-05-071-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | libxc (libxenctrl, libxenguest): New claim_enabled field in struct xc_dom_image; New nr_outstanding_pages field in struct xc_dominfo; New fields in struct xc_hvm_build_args (xenguest.h). libxl: new fields in dominfo domain_build_info device_vfb device_vkb device_disk etc. etc. etc. libxlu #includes libxl headers so needs to inherit its new soname Use Xen version for new sonames since we don't in fact guarantee ABI (as opposed to API) stability across releases. xenstore (libxenstore): New flag XS_UNWATCH_FILTER, so bump minor version only. This was the result of reviewing the output from: git-checkout staging cd tools git-diff RELEASE-4.2.2 `find -name \*.h` Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
* tools: bump SONAMEs for changes during 4.2 development cycle.Ian Campbell2012-09-251-1/+1
| | | | | | | | | | | We mostly did this as we went along, only a couple of minor number bumps were missed http://marc.info/?l=xen-devel&m=134366054929255&w=2: - Bumped libxl from 1.0.0 -> 1.0.1 - Bumped libxenstore from 3.0.1 -> 3.0.2 Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* xl: Remove global domid and enable -WshadowIan Campbell2012-09-171-1/+4
| | | | | | | | | | | | | | | | | | | | | | Lots of functions loop over a list of domain and others take a domid as a parameter, shadowing the global one and leading to all sorts of confusion. Therefore remove the global domid and explicitly pass it around as necessary. Adds a domid to the parameters for many functions and switches many others from taking a char * domain specifier to taking a domid, pushing the domid lookup to the toplevel. Replaces some open-coded domain_qualifier_to_domid error checking with find_domain. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> [ ijc -- annotate find_domain() with warn_unused_result and fix the handful of errors. ] Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: Enable -Wshadow.Ian Campbell2012-09-171-1/+7
| | | | | | | | | | | | | | | | | | | | | | It was convenient to invent $(CFLAGS_LIBXL) to do this. Various renamings to avoid shadowing standard functions: - index(3) - listen(2) - link(2) - abort(3) - abs(3) Reduced the scope of some variables to avoid conflicts. Change to libxc is due to the nested hypercall buf macros in set_xen_guest_handle (used in libxl) using the same local private vars. Build tested only. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: Fix missing dependency in api check ruleIan Jackson2012-09-141-4/+4
| | | | | | | | | | | | | | | | | Without this, the api check cpp run might happen before the various autogenerated files which are #include by libxl.h are ready. We need to remove the api-ok file from AUTOINCS to avoid a circular dependency. Instead, we list it explicitly as a dependency of the object files. The result is that the api check is the last thing to be done before make considers the preparation done and can start work on compiling .c files into .o's. Reported-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Tested-by: Olaf Hering <olaf@aepfle.de> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: fix api check MakefileIan Jackson2012-09-031-3/+5
| | | | | | | | | | | | | | | | | Touch the libxl.api-ok stamp file, and unconditionally put in place the new _libxl.api-for-check. This avoids needlessly rerunning the preprocessor on libxl.h each time we call "make". Ensure that _libxl.api-for-check gets the CFLAGS used for xl, so that if it is asked for in a standalone make run it can find xentoollog.h. Remove *.api-ok on clean. Also fix .gitignore. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: provide "make realclean" targetIan Jackson2012-08-241-1/+3
| | | | | | | | This removes all the autogenerated files. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: prefix *.for-check with _ to mark it as a generated file.Ian Campbell2012-08-031-3/+3
| | | | | | | | Keeps it out of my greps etc. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: enforce prohibitions of internal callersIan Jackson2012-08-011-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | libxl_internal.h says: * Functions using LIBXL__INIT_EGC may *not* generally be called from * within libxl, because libxl__egc_cleanup may call back into the * application. ... and * ... [Functions which take an ao_how] MAY NOT * be called from inside libxl, because they can cause reentrancy * callbacks. However, this was not enforced. Particularly the latter restriction is easy to overlook, especially since during the transition period to the new event system we have bent this rule a couple of times, and the bad pattern simply involves passing 0 or NULL for the ao_how. So use the compiler to enforce this property, as follows: - Mark all functions which take a libxl_asyncop_how, or which use EGC_INIT or LIBXL__INIT_EGC, with a new annotation LIBXL_EXTERNAL_CALLERS_ONLY in the public header. - Change the documentation comment for asynch operations and egcs to say that this should always be done. - Arrange that if libxl.h is included via libxl_internal.h, LIBXL_EXTERNAL_CALLERS_ONLY expands to __attribute__((warning(...))), which generates a message like this: libxl.c:1772: warning: call to 'libxl_device_disk_remove' declared with attribute warning: may not be called from within libxl Otherwise, the annotation expands to nothing, so external callers are unaffected. - Forbid inclusion of both libxl.h and libxl_internal.h unless libxl_internal.h came first, so that the above check doesn't have any loopholes. Files which include libxl_internal.h should not include libxl.h as well. This is enforced explicitly using #error. However, in practice with the current tree it just changes the error message when this mistake is made; otherwise we would carry on to immediately following #define which would cause the compiler to complain that LIBXL_EXTERNAL_CALLERS_ONLY was redefined. Then the developer might be tempted to add a #ifndef which would be wrong - it would leave the affected translation unit unprotected by the new enforcement regime. So let's be explicit. - Fix the one source of files which violate the above principle, the output from the idl compiler, by removing the redundant inclusion of libxl.h from the output. Also introduce a new script "check-libxl-api-rules" which contains some ad-hoc regexps to spot and complain when libxl.h contains functions which mention libxl_asyncop_how but not LIBXL_EXTERNAL_CALLERS_ONLY. This isn't a full C parser but is likely to get the common cases right and err on the side of complaining. While we are here, the invocation of perl for the bsd queue.h seddery to $(PERL). Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Cc: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: enable automatic placement of guests on NUMA nodesDario Faggioli2012-07-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a domain does not have a VCPU affinity, try to pin it automatically to some PCPUs. This is done taking into account the NUMA characteristics of the host. In fact, we look for a combination of host's NUMA nodes with enough free memory and number of PCPUs for the new domain, and pin it to the VCPUs of those nodes. Deciding which placement is the best happens by means of some heuristics. For instance, smaller candidates are better, both from a domain perspective (less memory spreading among nodes) and from the entire system perspective (smaller memory fragmentation). In case of candidates of equal sizes (i.e., with the same number of nodes), the amount of free memory and the number of domains' vCPUs already pinned to the candidates' nodes are both considered. Very often, candidates with greater amount of memory are the one we wants, as this is good for keeping memory fragmentation under control. However, we do not want to overcommit some node too much, just because it has a lot of memory, and that's why the number of vCPUs must be accounted for. This all happens internally to libxl, and no API for driving the mechanism is provided for now. This matches what xend already does. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: George Dunlap <george.dunlap@eu.citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Tested-by: Andre Przywara <andre.przywara@amd.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: kill the need for checking and linking to libmDario Faggioli2012-07-251-1/+1
| | | | | | | | | | | | Which was introduced in 7b0dc7f3ddfe. This is because the NUMA placement heuristic does not need FP arith anymore. As usual when changing configure.ac, remember to rerun autoconf after applying this change. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: explicitly check for libmath in autoconfDario Faggioli2012-07-061-1/+1
| | | | | | | | | | | | | | | | As well as explicitly add -lm to libxl's Makefile. This is because next patch uses floating point arithmetic, and it is better to state it clearly that we need libmath (just in case we find a libc that wants that to be explicitly enforced). Notice that autoconf should be rerun after applying this change. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> [ ijc -- s/libmath/libm/ in error message ] Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: make libxl-save-helper depend on the autogenerated code targetsIan Campbell2012-06-291-2/+2
| | | | | | | | | | Fixes this build failure: In file included from libxl_save_helper.c:44: libxl.h:346:26: error: _libxl_types.h: No such file or directory Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: domain save/restore: run in a separate processIan Jackson2012-06-281-3/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | libxenctrl expects to be able to simply run the save or restore operation synchronously. This won't work well in a process which is trying to handle multiple domains. The options are: - Block such a whole process (eg, the whole of libvirt) while migration completes (or until it fails). - Create a thread to run xc_domain_save and xc_domain_restore on. This is quite unpalatable. Multithreaded programming is error prone enough without generating threads in libraries, particularly if the thread does some very complex operation. - Fork and run the operation in the child without execing. This is no good because we would need to negotiate with the caller about fds we would inherit (and we might be a very large process). - Fork and exec a helper. Of these options the latter is the most palatable. Consequently: * A new helper program libxl-save-helper (which does both save and restore). It will be installed in /usr/lib/xen/bin. It does not link against libxl, only libxc, and its error handling does not need to be very advanced. It does contain a plumbing through of the logging interface into the callback stream. * A small ad-hoc protocol between the helper and libxl which allows log messages and the libxc callbacks to be passed up and down. Protocol doc comment is in libxl_save_helper.c. * To avoid a lot of tedium the marshalling boilerplate (stubs for the helper and the callback decoder for libxl) is generated with a small perl script. * Implement new functionality to spawn the helper, monitor its output, provide responses, and check on its exit status. * The functions libxl__xc_domain_restore_done and libxl__xc_domain_save_done now turn out to want be called in the same place. So make their state argument a void* so that the two functions are type compatible. The domain save path still writes the qemu savefile synchronously. This will need to be fixed in a subsequent patch. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: domain restore: reshuffle, preparing for aoIan Jackson2012-06-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are going to arrange that libxl, instead of calling xc_domain_restore, calls a stub function which forks and execs a helper program, so that restore can be asynchronous rather than blocking the whole toolstack. This stub function will be called libxl__xc_domain_restore. However, its prospective call site is unsuitable for a function which needs to make a callback, and is buried in two nested single-call-site functions which are logically part of the domain creation procedure. So we first abolish those single-call-site functions, integrate their contents into domain creation in their proper temporal order, and break out libxl__xc_domain_restore ready for its reimplementation. No functional change - just the following reorganisation: * Abolish libxl__domain_restore_common, as it had only one caller. Move its contents into (what was) domain_restore. * There is a new stage function domcreate_rebuild_done containing what used to be the bulk of domcreate_bootloader_done, since domcreate_bootloader_done now simply starts the restore (or does the rebuild) and arranges to call the next stage. * Move the contents of domain_restore into its correct place in the domain creation sequence. We put it inside domcreate_bootloader_done, which now either calls libxl__xc_domain_restore which will call the new function domcreate_rebuild_done, or calls domcreate_rebuild_done directly. * Various general-purpose local variables (`i' etc.) and convenience alias variables need to be shuffled about accordingly. * Consequently libxl__toolstack_restore needs to gain external linkage as it is now in a different file to its user. * Move the xc_domain_save callbacks struct from the stack into libxl__domain_create_state. In general the moved code remains almost identical. Two returns in what used to be libxl__domain_restore_common have been changed to set the return value and "goto out", and the call sites for the abolished and new functions have been adjusted. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: fix Makefile race bug relating to _paths.hIan Jackson2012-06-011-1/+1
| | | | | | | | | | | | | | | _paths.h needs to be in AUTOINCS. That arranges for it to be an explicit dependency of all object files. This is necessary so that it is made before any compilation is attempted. Making it a dependency of xl.h (as in 25426:e53a1d3c212c) is harmless, but not sufficient because that only takes effect if there is already an autogenerated .d file naming xl.h as a dependency of relevant object files. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* xl: xl.h depends on geenrated file _paths.hIan Campbell2012-05-301-0/+1
| | | | | | | Fixes build error. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: Introduce libxl__arch_domain_create (x86 version)Stefano Stabellini2012-05-301-1/+1
| | | | | | | Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Ian Jackson <Ian.Jackson@eu.citrix.com> Acked-by: Ian Campbell <Ian.Campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: Introduce libxl__arch_domain_createStefano Stabellini2012-05-301-3/+3
| | | | | | | | | | | Introduce an arch specific internal domain creation function. The X86 version of libxl__arch_domain_create is going to be introduced in the next few patches, to make it easier to spot all the code motions. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Ian Jackson <Ian.Jackson@eu.citrix.com> Acked-by: Ian Campbell <Ian.Campbell@citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* arm: compile libxlStefano Stabellini2012-05-301-0/+1
| | | | | | | | | | libxl_cpuid_destroy has been renamed to libxl_cpuid_dispose; also cpuid functions are only available on x86, so move them to libxl_cpuid.c. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: remove lockdir and config dir from the APIIan Campbell2012-05-291-4/+4
| | | | | | | | | | | | These are only used by xl. Rename _libxl_paths.h -> _paths.h, these are not actually "libxl" paths but rather are part of the Xen build time configuration. It is fine for xl to also consume them. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: provide libxl__datacopier_*Ian Jackson2012-05-111-1/+2
| | | | | | | | | | | | | General facility for ao operations to shovel data between fds. This will be used by the bootloader machinery. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Changes in v7: * assert that the ao is non-null on _init. Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* autoconf: New test for openpty et al.Ian Jackson2012-05-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | We may need to #include <libutil.h>, and/or link with -lutil, to use openpty, login_tty, and the like. Provide INCLUDE_LIBUTIL_H (preprocessor constant, not always defined) and PTYFUNCS_LIBS (makefile variable). We link libxl against PTYFUNCS_LIBS (which comes from autoconf) rather than UTIL_LIBS, and #include <libutil.h> where appropriate. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Changes since v7: * Actually include the call to AX_CHECK_PTYFUNCS in this patch, not the previous one, and regenerate configure accordingly. Changes since v6: * Put failure macro call in correct place so it might actually happen. * Try both with -lutil and without. * Patch now contains update for config.h.in. Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl, configure: print a warning if flex/bison are neededRoger Pau Monne2012-04-251-2/+14
| | | | | | | | | | | | | | | | | This patch adds better support for both Flex and Bison, which might be needed to compile libxl. Now configure script sets BISON and FLEX Makefile vars if bison and flex are found, but doesn't complain if they are not found. Also, added some Makefile soccery to print a warning message if Bison or Flex are needed but not found. [ Improved the warning message slightly. -iwj ] Signed-off-by: Roger Pau Monne <roger.pau@citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* xl: add support for vif rate limitingMathieu Gagne2012-04-241-1/+1
| | | | | | | | | | | | | | | | | | | | | The `rate` keyword specifies the rate at which the outgoing traffic will be limited to. The default if this keyword is not specified is unlimited. The `rate` keyword supports an optional replenishment interval parameter for specifying the granularity of credit replenishment. It determines the frequency at which the vif transmission credit is replenished. The default interval is 50ms. For example: 'rate=10Mb/s' 'rate=250KB/s' 'rate=1MB/s@20ms' Signed-off-by: Mathieu Gagne <mgagne@iweb.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: Protect fds with CLOEXEC even with forking threadsIan Jackson2012-04-111-1/+1
| | | | | | | | | | | | | | | | | | | We introduce a new "carefd" concept, which relates to fds that we care about not being inherited by long-lived children. As yet we do not use this anywhere in libxl. Until all locations in libxl which make such fds are converted, libxl__postfork may not work entirely properly. If these locations do not use O_CLOEXEC (or use calls for which there is no O_CLOEXEC) then multithreaded programs may not work properly. This introduces a new API call libxl_postfork_child_noexec which must be called by applications which make long-running non-execing children. Add the appropriate call to xl's postfork function. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: include <_libxl_paths.h> in libxl_internal.hIan Jackson2012-04-111-3/+1
| | | | | | | | | | | | | | | | | | | | | | Ie, we permit general code in libxl direct access to the manifest constants such as XEN_RUN_DIR. This simplifies their use in (eg) format strings. This might be controversial because it will make it difficult to make any of these runtime-configurable later without changing lots of use sites. But I don't think it's likely we'll want to do that. For the moment, leave existing call sites of all the functions in libxl_paths.c unchanged. The simplified use arrangements can be used in new code and when we update call sites for other reasons. Also correct the dependencies in the Makefile so that _libxl_paths.h is generated before anything that uses libxl_internal.h. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Roger Pau Monne <roger.pau@entel.upc.edu> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: Use PTHREAD_CFLAGS, LDFLAGS, LIBSIan Jackson2012-04-111-0/+4
| | | | | | | | | This is going to be needed for pthread_atfork. It is a mystery why it hasn't been needed before. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: Move bdf parsing into libxluGeorge Dunlap2012-04-041-1/+1
| | | | | | | | | | | | | Config parsing functions do not properly belong in libxl. Move them into libxlu so that others can use them or not as they see fit. No functional changes. One side-effect was making public a private libxl utility function which just set the elements of a structure from the function arguments passed in. Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: use libxl wrapper for yajl_gen_allocOlaf Hering2012-02-291-1/+1
| | | | | | | | | | | | To fix compile errors with libyajl2: * use libxl_yajl_gen_alloc() * use libxl_yajl_length * link xl with -lyajl for yajl_gen_string() Signed-off-by: Olaf Hering <olaf@aepfle.de> Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* build: add autoconf to replace custom checks in tools/checkIan Jackson2012-02-221-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added autotools magic to replace custom check scripts. The previous checks have been ported to autoconf, and some additional ones have been added (plus the suggestions from running autoscan). Two files are created as a result from executing configure script, config/Tools.mk and config.h. conf/Tools.mk is included by tools/Rules.mk, and contains most of the options previously defined in .config, that can now be set passing parameters or defining environment variables when executing configure script. config.h is only used by libxl/xl to detect yajl_version.h. [ tools/config.sub and config.guess copied from autotools-dev 20100122.1 from Debian squeeze i386, which is GPLv2. tools/configure generated using the included ./autogen.sh which ran autoconf 2.67-2 from Debian squeeze i386. autoconf is GPLv3+ but has a special exception for the autoconf output; this exception applies to us and exempts us from complying with GPLv3+ for configure, which is good as Xen is GPL2 only. - Ian Jackson ] Signed-off-by: Roger Pau Monne <roger.pau@entel.upc.edu> Tested-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: Export libxl_event.hBamvor Jian Zhang2012-02-211-1/+1
| | | | | | | | This fixes a compile error in libvirt. Signed-off-by: Bamvor Jian Zhang <bjzhang@suse.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* xl: use json output by defaultIan Campbell2012-02-071-1/+1
| | | | | | | | | | | | | | | | | | | | | Move the sxp producing code off into a separate file. It is supported for legacy reasons and needn't be updated other than the improve compatibility with xm. libxl_domain_config is not currently generated by the IDL (adding the necessary support for Array types is on my to do list) so hand code the json generation function for now. Since this rather directly exposes a libxl data structure it's not clear what sort of forward compatibility guarantees we can make. However it seems like it should be as stable as libxl's own API (which we are looking to stabilise) (Gratuitous string.h include needed for memset in libxl_util.h) Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <Ian.Jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: Rename libxl IDL infrastructure.Ian Campbell2012-01-311-1/+1
| | | | | | | | | | | | | | | | Originally libxltypes.py provided the infrastructure and libxl.idl provided the specific types. In 23887:a543e10211f7 libxl.idl became libxl_types.idl (to allow for libxl_types_internal.idl) which means we now have libxl_types.FOO and libxltypes.FOO providing different things and annoying people in tab completion. Rename the infrastructure as idl. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <Ian.Jackson@eu.citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: add support for yajl 2.xRoger Pau Monne2012-01-311-0/+4
| | | | | | | | | This patch adds support for yajl versions 2.x, while retaining 1.x compatibility. All the needed ifdefs can be found in libxl_json.h. Signed-off-by: Roger Pau Monne <roger.pau@entel.upc.edu> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* mini-os: use BSD sys/queue.h instead of Linux list.hIan Campbell2012-01-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The latter is GPL which makes the whole of mini-os GPL rather than BSD as intended. In tree users are all GPL or GPL-compatible but we should fix this so that mini-os is BSD. Do so by using the same BSD sys/queue.h as we use in libxl. Tested with the builtin mini-os test app and qemu stubdomain, both of which appear to still function as expected. Move tools/libxl/external and the associated sed script to tools/include/xen-external to allow more sensible access from mini-os. Also add s/NULL/0/ in the sed script due to NULL not always being defined in stubdom code when mini-os/wait.h is included. As well as the obvious ABI changes there are a few API updates associated with the change: - struct rw_semaphore.wait_list is unused - remove_waiter needs to take the wait_queue_head The latter requires a qemu update, so there is also a QEMU_TAG update in this changeset. I sprinkled some extra-emacs local variables around the files I edited which didn't have them. I think this should be backported to the stable branches since external users of mini-os may have been mislead into thinking they could safely link mini-os against GPL-incompatible code. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: New API for providing OS events to libxlIan Jackson2012-01-271-1/+1
| | | | | | | | | | | | | | | | | | We provide a new set of functions and related structures libxl_osevent_* which are to be used by event-driven applications to receive information from libxl about which fds libxl is interested in, and what timeouts libxl is waiting for, and to pass back to libxl information about which fds are readable/writeable etc., and which timeouts have occurred. Ie, low-level events. In this patch, this new machinery is still all unused. Callers will appear in the next patch in the series, which introduces a new API for applications to receive high-level events about actual domains etc. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: fix build with make prior to 3.81Jan Beulich2012-01-121-1/+3
| | | | | | | | | Up to 3.80, make only supported simple 'else' constructs, which got violated by 24432:e0effa7c04f5. Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: add support for image files for NetBSDRoger Pau Monne2011-09-301-0/+9
| | | | | | | | | | | Created a helper function to detect if the OS is capable of using image files as phy backends. Create two OS specific files, and changed the Makefile to choose the correct one at compile time. Signed-off-by: Roger Pau Monne <roger.pau@entel.upc.edu> Acked-by: Ian Jackson <ian.jackson.citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com> Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: Compile with -Wformat-nonliteral.Ian Campbell2011-12-131-1/+1
| | | | | | | | | | | | | | At least one compiler (some Ubuntu version) uses this by default and it seems like a good idea anyway and the fixup required is trivial. One hunk is from a patch by Ian Jackson. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Reported-by: Adda Rathbone <addarathbone@googlemail.com> Tested-by: Adda Rathbone <addarathbone@googlemail.com> Tested-by: Andrew Pounce <andrew.pounce@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: permit declaration after statementIan Jackson2011-12-121-1/+2
| | | | | | | | | | | | | | | | | | | | | | GCC and C99 allow declarations to be mixed with code. This is a good idea because: * It allows variables to be more often initialised as they are declared, thus reducing the occurrence of uninitialised variable errors. * Certain alloca-like constructs (arrays allocated at runtime on the stack) can more often be written without a spurious { } block. Such blocks are confusing to read. * It makes it easier to write and use macros which declare and initialise formulaic variables and do other function setup code, because there is no need to worry that such macros might be incompatible with each other or have strict ordering constraints. Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* libxl: Provide a version of bsd's queue.h as _libxl_list.hIan Jackson2011-12-121-4/+8
| | | | | | | | | | | | | | | | | | | | | We would like some linked list macros which are (a) well known to be sane and (b) typesafe. BSD's queue.h meets these criteria. We also provide some simple perlery to arrange to add the libxl_ namespace prefix to the macros. This will allow us to #include _libxl_list.h in our public header file without clashing with anyone else who is also using another version of queue.h. (A note on copyright: The FreeBSD files we are adding have an [L]GPL-compatible licence, so there is no need to change our COPYING. Although FreeBSD's queue.3 still contains the advertising clause, this has been withdrawn by UCB as recorded in the FreeBSD COPYRIGHT file, which is included in tools/libxl/external/ for reference.) Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com> Acked-by: Ian Campbell <Ian.campbell@citrix.com> Tested-by: Roger Pau Monne <roger.pau@entel.upc.edu> Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
* tools/build: Introduce {PREPEND,APPEND}_{LIB,INCLUDES}Roger Pau Monne2011-11-141-4/+4
| | | | | | | | | | | | | | | | | | | | | | | Create two new variables called APPEND_ and PREPEND_ to add compile flags at the beginning or at the end of the search path. Added a new semantic for user defined compile flags, here is the list of possible options: PREPEND_LIB: add libraries to the search path before xen (before xen installation folders). PREPEND_INCLUDES: add headers to the search path before xen (before xen installation folders). APPEND_LIB: add libraries to the search path at the end (after all xen installation folders have been added). APPEND_INCLUDES: add libraries to the search path at the end (after all xen installation folders have been added). EXTRA_INCLUDES and EXTRA_LIB can still be used, and they will have the same effect as PREPEND_INCLUDES and PREPEND_LIB. Signed-off-by: Roger Pau Monne <roger.pau@entel.upc.edu> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: remove generated file testidl.c on cleanIan Campbell2011-10-181-0/+1
| | | | | | Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson.citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com>
* libxl: IDL: autogenerate functions to produce JSON from libxl data structures.Ian Campbell2011-10-071-3/+6
| | | | | | | | | | | | | | | | | | | | Two functions are provided. TYPE_gen_json exposes an interface which is compatible with the YAGL generator infrastructure. TYPE_to_string uses this to produce a pretty printed string. The TYPE_gen_json functions are defined in a new header libxl_json.h which is not exposed via libxl.h due to the use of YAGL datatypes to avoid poluting the namespace us libxl users which don't use the library themselves. If a libxl user is interested in integrating at the YAGL level then it should #include this file itself. Also update testidl to generate a random version of each IDL datastructure and convert it to JSON. Unfortunately this requires a libxl_ctx and therefore the test must be run on a Xen system now. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Ian Jackson <ian.jackson.citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com>
* libxl: Introduce a QMP clientAnthony PERARD2011-09-291-1/+1
| | | | | | | | | | | | | | | QMP stands for QEMU Monitor Protocol and it is used to query information from QEMU or to control QEMU. This implementation will ask QEMU the list of chardevice and store the path to serial ports in xenstored. So we will be able to use xl console with QEMU upstream. In order to connect to the QMP server, a socket file is created in /var/run/xen/qmp-libxl-$(domid). Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
* libxl: Introduce JSON parserAnthony PERARD2011-09-291-1/+4
| | | | | | | | | | | | We use the yajl parser, but we need to make a tree from the parse result to use it outside the parser. So this patch include json_object struct that is used to hold the JSON data. Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: Introduce libxl_internal_types.idl.Anthony PERARD2011-09-291-1/+3
| | | | | | Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
* libxl: Rename libxl.idl to libxl_types.idl.Anthony PERARD2011-09-291-6/+6
| | | | | | | | | Signed-off-by: Anthony PERARD <anthony.perard@citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> --HG-- rename : tools/libxl/libxl.idl => tools/libxl/libxl_types.idl
* libxl: rename testenum->testidlIan Campbell2011-07-141-7/+7
| | | | | | | I plan to add some non-Enumeration tests. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Committed-by: Ian Jackson <ian.jackson.citrix.com>
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