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* qom: Clean up error reporting in user_creatable_add_opts_foreach()Markus Armbruster2018-10-191-5/+3Star
| | | | | | | | | | | | | Calling error_report() in a function that takes an Error ** argument is suspicious. user_creatable_add_opts_foreach() does that, and then fails without setting an error. Its caller main(), via qemu_opts_foreach(), is fine with it, but clean it up anyway. Cc: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20181017082702.5581-20-armbru@redhat.com>
* qemu-io: Exit with error when a command failedMax Reitz2018-06-111-6/+22
| | | | | | | | | | | | | | | | Currently, qemu-io basically always returns success when it gets to interactive mode (so once the whole command line has been parsed; even before the commands on the command line are interpreted). That is not very useful. This patch makes qemu-io return failure when any of the executed commands failed. Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1519617 Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180509194302.21585-4-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
* qemu-io: Let command functions return error codeMax Reitz2018-06-111-12/+22
| | | | | | | | | | This is basically what everything else in the qemu code base does, so we can do it here, too. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180509194302.21585-3-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
* qemu-io: Drop command functions' return valuesMax Reitz2018-06-111-18/+18
| | | | | | | | | | | | | | | For qemu-io, a function returns an integer with two possible values: 0 for "qemu-io may continue execution", or 1 for "qemu-io should exit". However, there is only a single command that returns 1, and that is "quit". So let's turn this case into a global variable instead so we can make better use of the return value in a later patch. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20180509194302.21585-2-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
* qemu-io: Use purely string blockdev optionsMax Reitz2018-05-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Currently, qemu-io only uses string-valued blockdev options (as all are converted directly from QemuOpts) -- with one exception: -U adds the force-share option as a boolean. This in itself is already a bit questionable, but a real issue is that it also assumes the value already existing in the options QDict would be a boolean, which is wrong. That has the following effect: $ ./qemu-io -r -U --image-opts \ driver=file,filename=/dev/null,force-share=off [1] 15200 segmentation fault (core dumped) ./qemu-io -r -U --image-opts driver=file,filename=/dev/null,force-share=off Since @opts is converted from QemuOpts, the value must be a string, and we have to compare it as such. Consequently, it makes sense to also set it as a string instead of a boolean. Cc: qemu-stable@nongnu.org Signed-off-by: Max Reitz <mreitz@redhat.com> Message-id: 20180502202051.15493-2-mreitz@redhat.com Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
* qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREFMarc-André Lureau2018-05-041-3/+3
| | | | | | | | | | | | | | | | | | | | | Now that we can safely call QOBJECT() on QObject * as well as its subtypes, we can have macros qobject_ref() / qobject_unref() that work everywhere instead of having to use QINCREF() / QDECREF() for QObject and qobject_incref() / qobject_decref() for its subtypes. The replacement is mechanical, except I broke a long line, and added a cast in monitor_qmp_cleanup_req_queue_locked(). Unlike qobject_decref(), qobject_unref() doesn't accept void *. Note that the new macros evaluate their argument exactly once, thus no need to shout them. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180419150145.24795-4-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Rebased, semantic conflict resolved, commit message improved] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* Polish the version strings containing the package versionThomas Huth2018-03-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 67a1de0d195a there is no space anymore between the version number and the parentheses when running configure with --with-pkgversion=foo : $ qemu-system-s390x --version QEMU emulator version 2.11.50(foo) But the space is included when building without that option when building from a git checkout: $ qemu-system-s390x --version QEMU emulator version 2.11.50 (v2.11.0-1494-gbec9c64-dirty) The same confusion exists with the "query-version" QMP command. Let's fix this by introducing a proper QEMU_FULL_VERSION definition that includes the space and parentheses, while the QEMU_PKGVERSION should just cleanly contain the package version string itself. Note that this also changes the behavior of the "query-version" QMP command (the space and parentheses are not included there anymore), but that's supposed to be OK since the strings there are not meant to be parsed by other tools. Fixes: 67a1de0d195a6185c39b436159c9ffc7720bf979 Buglink: https://bugs.launchpad.net/qemu/+bug/1673373 Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1518692807-25859-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* use g_path_get_basename instead of basenameJulia Suvorova2018-03-061-1/+1
| | | | | | | | | | | | | | basename(3) and dirname(3) modify their argument and may return pointers to statically allocated memory which may be overwritten by subsequent calls. g_path_get_basename and g_path_get_dirname have no such issues, and therefore more preferable. Signed-off-by: Julia Suvorova <jusual@mail.ru> Message-Id: <1519888086-4207-1-git-send-email-jusual@mail.ru> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qemu-io: fix EOF Ctrl-D handling in qemu-io readline codeDaniel P. Berrange2018-02-131-1/+26
| | | | | | | | | | | | | | | | | | | | | | qemu-io puts the TTY into non-canonical mode, which means no EOF processing is done and thus getchar() will never return the EOF constant. Instead we have to query the TTY attributes to determine the configured EOF character (usually Ctrl-D / 0x4), and then explicitly check for that value. This fixes the regression that prevented Ctrl-D from triggering an exit of qemu-io that has existed since readline was first added in commit 0cf17e181798063c3824c8200ba46f25f54faa1a Author: Stefan Hajnoczi <stefanha@redhat.com> Date: Thu Nov 14 11:54:17 2013 +0100 qemu-io: use readline.c It also ensures that a newline is printed when exiting, to complete the line output by the "qemu-io> " prompt. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* Include qapi/qmp/qbool.h exactly where neededMarkus Armbruster2018-02-091-1/+0Star
| | | | | | | Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-15-armbru@redhat.com>
* Include qapi/qmp/qdict.h exactly where neededMarkus Armbruster2018-02-091-0/+2
| | | | | | | | | | | | | This cleanup makes the number of objects depending on qapi/qmp/qdict.h drop from 4550 (out of 4743) to 368 in my "build everything" tree. For qapi/qmp/qobject.h, the number drops from 4552 to 390. While there, separate #include from file comment with a blank line. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-13-armbru@redhat.com>
* qemu-io: Add -C for opening with copy-on-readEric Blake2017-10-061-3/+12
| | | | | | | | | | | | Make it easier to enable copy-on-read during iotests, by exposing a new bool option to main and open. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* maint: Include bug-reporting info in --help outputEric Blake2017-08-081-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | These days, many programs are including a bug-reporting address, or better yet, a link to the project web site, at the tail of their --help output. However, we were not very consistent at doing so: only qemu-nbd and qemu-qa mentioned anything, with the latter pointing to an individual person instead of the project. Add a new #define that sets up a uniform string, mentioning both bug reporting instructions and overall project details, and which a downstream vendor could tweak if they want bugs to go to a downstream database. Then use it in all of our binaries which have --help output. The canned text intentionally references http:// instead of https:// because our https website currently causes certificate errors in some browsers. That can be tweaked later once we have resolved the web site issued. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20170803163353.19558-5-eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qemu-io: Give more --version informationEric Blake2017-08-081-1/+3
| | | | | | | | | | | Include the package version information (useful for detecting builds from git or downstream backports), and the copyright notice. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20170803163353.19558-3-eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* block: rip out all traces of password promptingDaniel P. Berrange2017-07-111-20/+0Star
| | | | | | | | | | | | | Now that qcow & qcow2 are wired up to get encryption keys via the QCryptoSecret object, nothing is relying on the interactive prompting for passwords. All the code related to password prompting can thus be ripped out. Reviewed-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170623162419.26068-17-berrange@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
* qemu-io: Don't die on second openEric Blake2017-07-101-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most callback commands in qemu-io return 0 to keep the interpreter loop running, or 1 to quit immediately. However, open_f() just passed through the return value of openfile(), which has different semantics of returning 0 if a file was opened, or 1 on any failure. As a result of mixing the return semantics, we are forcing the qemu-io interpreter to exit early on any failures, which is rather annoying when some of the failures are obviously trying to give the user a hint of how to proceed (if we didn't then kill qemu-io out from under the user's feet): $ qemu-io qemu-io> open foo qemu-io> open foo file open already, try 'help close' $ echo $? 0 In general, we WANT openfile() to report failures, since it is the function used in the form 'qemu-io -c "$something" no_such_file' for performing one or more -c options on a single file, and it is not worth attempting $something if the file itself cannot be opened. So the solution is to fix open_f() to always return 0 (when we are in interactive mode, even failure to open should not end the session), and save the return value of openfile() for command line use in main(). Note, however, that we do have some qemu-iotests that do 'qemu-io -c "open file" -c "$something"'; such tests will now proceed to attempt $something whether or not the open succeeded, the same way as if the two commands had been attempted in interactive mode. As such, the expected output for those tests has to be modified. But it also means that it is now possible to use -c close and have a single qemu-io command line operate on more than one file even without using interactive mode. Although the '-c open' action is a subtle change in behavior, remember that qemu-io is for debugging purposes, so as long as it serves the needs of qemu-iotests while still being reasonable for interactive use, it should not be a problem that we are changing tests to the new behavior. This has been awkward since at least as far back as commit e3aff4f, in 2009. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* block: Use QDict helpers for --force-shareEric Blake2017-05-231-1/+1
| | | | | | | | | | | | | | | Fam's addition of --force-share in commits 459571f7 and 335e9937 were developed prior to the addition of QDict scalar insertion macros, but merged after the general cleanup in commit 46f5ac20. Patch created mechanically by rerunning: spatch --sp-file scripts/coccinelle/qobject.cocci \ --macro-file scripts/cocci-macro-file.h --dir . --in-place Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20170515195439.17677-1-eblake@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qemu-io: Add --force-share optionFam Zheng2017-05-111-8/+34
| | | | | | | Add --force-share/-U to program options and -U to open subcommand. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qobject: Use simpler QDict/QList scalar insertion macrosEric Blake2017-05-091-1/+1
| | | | | | | | | | | | | | | | | | We now have macros in place to make it less verbose to add a scalar to QDict and QList, so use them. Patch created mechanically via: spatch --sp-file scripts/coccinelle/qobject.cocci \ --macro-file scripts/cocci-macro-file.h --dir . --in-place then touched up manually to fix a couple of '?:' back to original spacing, as well as avoiding a long line in monitor.c. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20170427215821.19397-7-eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qemu-io: Return non-zero exit code on failureNir Soffer2017-02-121-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The result of openfile was not checked, leading to failure deep in the actual command with confusing error message, and exiting with exit code 0. Here is a simple example - trying to read with the wrong format: $ touch file $ qemu-io -f qcow2 -c 'read -P 1 0 1024' file; echo $? can't open device file: Image is not in qcow2 format no file open, try 'help open' 0 With this patch, we fail earlier with exit code 1: $ ./qemu-io -f qcow2 -c 'read -P 1 0 1024' file; echo $? can't open device file: Image is not in qcow2 format 1 Failing earlier, we don't log this error now: no file open, try 'help open' But some tests expected it; the line was removed from the test output. Signed-off-by: Nir Soffer <nirsof@gmail.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20170201003120.23378-2-nirsof@gmail.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
* trace: provide mechanism for registering trace eventsDaniel P. Berrange2016-10-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the notion of there being a single global array of trace events, by introducing a method for registering groups of events. The module_call_init() needs to be invoked at the start of any program that wants to make use of the trace support. Currently this covers system emulators qemu-nbd, qemu-img and qemu-io. [Squashed the following fix from Daniel P. Berrange <berrange@redhat.com>: linux-user/bsd-user: initialize trace events subsystem The bsd-user/linux-user programs make use of the CPU emulation code and this now requires that the trace events subsystem is enabled, otherwise it'll crash trying to allocate an empty trace events bitmap for the CPU object. --Stefan] Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1475588159-30598-14-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* trace: enable tracing in qemu-ioDenis V. Lunev2016-06-281-4/+14
| | | | | | | | | | | | | Moving trace_init_backends() into trace_opt_parse() is not possible. This should be called after daemonize() in vl.c. Signed-off-by: Denis V. Lunev <den@openvz.org> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1466174654-30130-5-git-send-email-den@openvz.org CC: Paolo Bonzini <pbonzini@redhat.com> CC: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* Use &error_fatal when initializing crypto on qemu-{img,io,nbd}Eduardo Habkost2016-05-201-4/+1Star
| | | | | | | | | | | | In addition to making the code simpler, this will replace the long error messages: cannot initialize crypto: Unable to initialize GNUTLS library: [...] cannot initialize crypto: Unable to initialize gcrypt with shorter messages: Unable to initialize GNUTLS library: [...] Unable to initialize gcrypt Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
* qemu-io: Make 'open' subcommand more like command lineEric Blake2016-05-121-4/+25
| | | | | | | | | | | | | | | | | | | | The command line defaults to BDRV_O_UNMAP, but can use -d to reset it. Meanwhile, the 'open' subcommand was defaulting to no discards, with no way to set it. The command line has both -n and -tMODE to set a variety of cache modes, but the 'open' subcommand had only -n. The 'open' subcommand had no way to set BDRV_O_NATIVE_AIO. Note that the 'reopen' subcommand uses '-c' where the command line and 'open' use -t. Making that consistent would be a separate patch. Signed-off-by: Eric Blake <eblake@redhat.com> Message-id: 1462677405-4752-3-git-send-email-eblake@redhat.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
* qemu-io: Add missing option documentationEric Blake2016-05-121-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | The Usage: summary is missing several options, but rather than having to maintain it, it's simpler to just state [OPTIONS], since the options are spelled out below. Commit 499afa2 added --image-opts, but forgot to document it in --help. Likewise for commit 9e8f183 and -d/--discard. Commit e3aff4f6 put "-o/--offset" in the long opts, but it has never been honored. Add a note that '-n' is short for '-t none'. Commit 9a2d77ad killed the -C option, but forgot to undocument it for the 'open' subcommand. Finally, commit 10d9d75 removed -g/--growable, but forgot to cull it from the valid short options. Signed-off-by: Eric Blake <eblake@redhat.com> Message-id: 1462677405-4752-2-git-send-email-eblake@redhat.com Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
* qom: -object error messages lost location, restore itMarkus Armbruster2016-04-281-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qemu_opts_foreach() runs its callback with the error location set to the option's location. Any errors the callback reports use the option's location automatically. Commit 90998d5 moved the actual error reporting from "inside" qemu_opts_foreach() to after it. Here's a typical hunk: if (qemu_opts_foreach(qemu_find_opts("object"), - object_create, - object_create_initial, NULL)) { + user_creatable_add_opts_foreach, + object_create_initial, &err)) { + error_report_err(err); exit(1); } Before, object_create() reports from within qemu_opts_foreach(), using the option's location. Afterwards, we do it after qemu_opts_foreach(), using whatever location happens to be current there. Commonly a "none" location. This is because Error objects don't have location information. Problematic. Reproducer: $ qemu-system-x86_64 -nodefaults -display none -object secret,id=foo,foo=bar qemu-system-x86_64: Property '.foo' not found Note no location. This commit restores it: qemu-system-x86_64: -object secret,id=foo,foo=bar: Property '.foo' not found Note that the qemu_opts_foreach() bug just fixed could mask the bug here: if the location it leaves dangling hasn't been clobbered, yet, it's the correct one. Reported-by: Eric Blake <eblake@redhat.com> Cc: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1461767349-15329-4-git-send-email-armbru@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [Paragraph on Error added to commit message]
* block: initialize qcrypto API at startupDaniel P. Berrange2016-04-121-0/+6
| | | | | | | | | | | | | | | Any programs which call the qcrypto APIs should ensure that qcrypto_init() has been called before anything else which can use crypto. Essentially this means right at the start of the main method before initializing anything else. This is important because some versions of gnutls/gcrypt require explicit initialization before use. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Alex Bligh <alex@alex.org.uk> Tested-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-io: Call blk_set_enable_write_cache() explicitlyKevin Wolf2016-03-301-8/+13
| | | | | Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
* qemu-img/qemu-io: don't prompt for passwords if not requiredDaniel P. Berrange2016-03-301-1/+1
| | | | | | | | | | | | | | | The qemu-img/qemu-io tools prompt for disk encryption passwords regardless of whether any are actually required. Adding a check on bdrv_key_required() avoids this prompt for disk formats which have been converted to the QCryptoSecret APIs. This is just a temporary hack to ensure the block I/O tests continue to work after each patch, since the last patch will completely delete all the password prompting code. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* include/qemu/osdep.h: Don't include qapi/error.hMarkus Armbruster2016-03-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the Error typedef. Since then, we've moved to include qemu/osdep.h everywhere. Its file comment explains: "To avoid getting into possible circular include dependencies, this file should not include any other QEMU headers, with the exceptions of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which are doing a similar job to this file and are under similar constraints." qapi/error.h doesn't do a similar job, and it doesn't adhere to similar constraints: it includes qapi-types.h. That's in excess of 100KiB of crap most .c files don't actually need. Add the typedef to qemu/typedefs.h, and include that instead of qapi/error.h. Include qapi/error.h in .c files that need it and don't get it now. Include qapi-types.h in qom/object.h for uint16List. Update scripts/clean-includes accordingly. Update it further to match reality: replace config.h by config-target.h, add sysemu/os-posix.h, sysemu/os-win32.h. Update the list of includes in the qemu/osdep.h comment quoted above similarly. This reduces the number of objects depending on qapi/error.h from "all of them" to less than a third. Unfortunately, the number depending on qapi-types.h shrinks only a little. More work is needed for that one. Signed-off-by: Markus Armbruster <armbru@redhat.com> [Fix compilation without the spice devel packages. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* blockdev: Split monitor reference from BB creationMax Reitz2016-03-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Before this patch, blk_new() automatically assigned a name to the new BlockBackend and considered it referenced by the monitor. This patch removes the implicit monitor_add_blk() call from blk_new() (and consequently the monitor_remove_blk() call from blk_delete(), too) and thus blk_new() (and related functions) no longer take a BB name argument. In fact, there is only a single point where blk_new()/blk_new_open() is called and the new BB is monitor-owned, and that is in blockdev_init(). Besides thus relieving us from having to invent names for all of the BBs we use in qemu-img, this fixes a bug where qemu cannot create a new image if there already is a monitor-owned BB named "image". If a BB and its BDS tree are created in a single operation, as of this patch the BDS tree will be created before the BB is given a name (whereas it was the other way around before). This results in minor change to the output of iotest 087, whose reference output is amended accordingly. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-io: use no_argument/required_argument constantsDaniel P. Berrange2016-02-221-15/+15
| | | | | | | | | | When declaring the 'struct option' array, use the standard constants no_argument/required_argument, instead of magic values 0 and 1. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-io: allow specifying image as a set of options argsDaniel P. Berrange2016-02-221-6/+51
| | | | | | | | | | | | | | | | | | | | | | | | | Currently qemu-io allows an image filename to be passed on the command line, but unless using the JSON format, it does not have a way to set any options except the format eg qemu-io https://127.0.0.1/images/centos7.iso qemu-io /home/berrange/demo.qcow2 By contrast when using the interactive shell, it is possible to use --option with the 'open' command, or to omit the filename. This adds a --image-opts arg that indicates that the positional filename should be interpreted as a full option string, not just a filename. qemu-io --image-opts driver=https,url=https://127.0.0.1/images,sslverify=off qemu-io --image-opts driver=qcow2,file.filename=/home/berrange/demo.qcow2 This flag is mutually exclusive with the '-f' flag and with the '-o' flag to the 'open' command Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-io: add support for --object command line argDaniel P. Berrange2016-02-221-0/+34
| | | | | | | | | | | | | | | Allow creation of user creatable object types with qemu-io via a new --object command line arg. This will be used to supply passwords and/or encryption keys to the various block driver backends via the recently added 'secret' object type. # printf letmein > mypasswd.txt # qemu-io --object secret,id=sec0,file=mypasswd.txt \ ...other args... Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* nbd: convert block client to use I/O channels for connection setupDaniel P. Berrange2016-02-161-0/+1
| | | | | | | | | | | | | | | | | | | | This converts the NBD block driver client to use the QIOChannelSocket class for initial connection setup. The NbdClientSession struct has two pointers, one to the master QIOChannelSocket providing the raw data channel, and one to a QIOChannel which is the current channel used for I/O. Initially the two point to the same object, but when TLS support is added, they will point to different objects. The qemu-img & qemu-io tools now need to use MODULE_INIT_QOM to ensure the QIOChannel object classes are registered. The qemu-nbd tool already did this. In this initial conversion though, all I/O is still actually done using the raw POSIX sockets APIs. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-Id: <1455129674-17255-4-git-send-email-berrange@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* trace: split trace_init_file out of trace_init_backendsPaolo Bonzini2016-02-031-1/+1
| | | | | | | | | | This is cleaner, and improves error reporting with -daemonize. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-id: 1452174932-28657-4-git-send-email-den@openvz.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* trace: split trace_init_events out of trace_init_backendsPaolo Bonzini2016-02-031-1/+1
| | | | | | | | | | | | This is cleaner and has two advantages. First, it improves error reporting with -daemonize. Second, multiple "-trace events" options now cumulate. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-id: 1452174932-28657-3-git-send-email-den@openvz.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* block: Clean up includesPeter Maydell2016-01-201-4/+1Star
| | | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-io qemu-nbd: Use error_report() etc. instead of fprintf()Markus Armbruster2016-01-131-5/+3Star
| | | | | | | | Just three instances left. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1450452927-8346-16-git-send-email-armbru@redhat.com>
* qemu-io: Remove duplicate 'open' error messageKevin Wolf2015-09-141-1/+0Star
| | | | | | | | qemu_opts_parse_noisily() already prints an error message with the exact reason why the parsing failed. No need to add another less specific one. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
* qerror: Move #include out of qerror.hMarkus Armbruster2015-06-221-0/+2
| | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
* QemuOpts: Wean off qerror_report_err()Markus Armbruster2015-06-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qerror_report_err() is a transitional interface to help with converting existing monitor commands to QMP. It should not be used elsewhere. The only remaining user in qemu-option.c is qemu_opts_parse(). Is it used in QMP context? If not, we can simply replace qerror_report_err() by error_report_err(). The uses in qemu-img.c, qemu-io.c, qemu-nbd.c and under tests/ are clearly not in QMP context. The uses in vl.c aren't either, because the only QMP command handlers there are qmp_query_status() and qmp_query_machines(), and they don't call it. Remaining uses: * drive_def(): Command line -drive and such, HMP drive_add and pci_add * hmp_chardev_add(): HMP chardev-add * monitor_parse_command(): HMP core * tmp_config_parse(): Command line -tpmdev * net_host_device_add(): HMP host_net_add * net_client_parse(): Command line -net and -netdev * qemu_global_option(): Command line -global * vnc_parse_func(): Command line -display, -vnc, default display, HMP change, QMP change. Bummer. * qemu_pci_hot_add_nic(): HMP pci_add * usb_net_init(): Command line -usbdevice, HMP usb_add Propagate errors through qemu_opts_parse(). Create a convenience function qemu_opts_parse_noisily() that passes errors to error_report_err(). Switch all non-QMP users outside tests to it. That leaves vnc_parse_func(). Propagate errors through it. Since I'm touching it anyway, rename it to vnc_parse(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
* qemu-io: prompt for encryption keys when requiredDaniel P. Berrange2015-05-221-0/+21
| | | | | | | | | | | | | | | | The qemu-io tool does not check if the image is encrypted so historically would silently corrupt the sectors by writing plain text data into them instead of cipher text. The earlier commit turns this mistake into a fatal abort, so check for encryption and prompt for key when required. This enables us to add unit tests to ensure we don't break the ability of qemu-img to convert existing encrypted qcow2 files into a non-encrypted format. Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* qemu-io: Use getopt() correctlyEric Blake2015-05-221-1/+1
| | | | | | | | | | | POSIX says getopt() returns -1 on completion. While Linux happens to define EOF as -1, this definition is not required by POSIX, and there may be platforms where checking for EOF instead of -1 would lead to an infinite loop. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
* Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2015-02-18' ↵Peter Maydell2015-02-261-2/+1Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into staging Clean up around error_get_pretty(), qerror_report_err() # gpg: Signature made Wed Feb 18 10:10:07 2015 GMT using RSA key ID EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" * remotes/armbru/tags/pull-error-2015-02-18: qemu-char: Avoid qerror_report_err() outside QMP command handlers qemu-img: Avoid qerror_report_err() outside QMP command handlers vl: Avoid qerror_report_err() outside QMP command handlers tpm: Avoid qerror_report_err() outside QMP command handlers numa: Avoid qerror_report_err() outside QMP command handlers net: Avoid qerror_report_err() outside QMP command handlers monitor: Avoid qerror_report_err() outside QMP command handlers monitor: Clean up around monitor_handle_fd_param() error: Use error_report_err() where appropriate error: New convenience function error_report_err() vhost-scsi: Improve error reporting for invalid vhostfd Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * error: Use error_report_err() where appropriateMarkus Armbruster2015-02-181-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Coccinelle semantic patch: @@ expression E; @@ - error_report("%s", error_get_pretty(E)); - error_free(E); + error_report_err(E); @@ expression E, S; @@ - error_report("%s", error_get_pretty(E)); + error_report_err(E); ( exit(S); | abort(); ) Trivial manual touch-ups in block/sheepdog.c. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
* | qemu-io: Use BlockBackendMax Reitz2015-02-161-9/+6Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | qemu-io should behave like a guest, therefore it should use BlockBackend to access the block layer. There are a couple of places where that is infeasible: First, the bdrv_debug_* functions could theoretically be mirrored in the BlockBackend, but since these are functions internal to the block layer, they should not be visible externally (qemu-io as a test tool is exempt from this). Second, bdrv_get_info() and bdrv_get_specific_info() work on a single BDS alone, therefore they should stay BDS-specific. Third, bdrv_is_allocated() mainly works on a single BDS as well. Some data may be passed through from the BDS's file (if sectors which are apparently allocated in the file are not really allocated there but just zero). [Fixed conflicts around block_acct_start() usage from Fam Zheng's "qemu-io: Account IO by aio_read and aio_write" commit. Use BlockBackend and blk_get_stats() instead of BlockDriverState. --Stefan] Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1423162705-32065-14-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* | qemu-io: Remove "growable" optionMax Reitz2015-02-161-19/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove "growable" option from the "open" command and from the qemu-io command line. qemu-io is about to be converted to BlockBackend which will make sure that no request exceeds the image size, so the only way to keep "growable" would be to use BlockBackend if it is not given and to directly access the BDS if it is. qemu-io is a debugging tool, therefore removing a rarely used option will have only a very small impact, if any. There was only one qemu-iotest which used the option; since it is not critical, this patch just removes it. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1423162705-32065-13-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* | qemu-io: Use blk_new_open() in openfile()Max Reitz2015-02-161-18/+12Star
|/ | | | | | | Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1423162705-32065-12-git-send-email-mreitz@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* qemu-io: Allow explicitly specifying formatKevin Wolf2014-12-101-8/+20
| | | | | | | | | | | | | This adds a -f option to qemu-io which allows to explicitly specify the block driver to use for the given image. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 1416497234-29880-2-git-send-email-kwolf@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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