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2018-08-16qobject: qobject_from_jsonv() is dangerous, hide it awayMarkus Armbruster
qobject_from_jsonv() takes ownership of %p arguments. On failure, we can't generally know whether we failed before or after %p, so ownership becomes indeterminate. To avoid leaks, callers passing %p must terminate on error, e.g. by passing &error_abort. Trap for the unwary; document and give the function internal linkage. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180806065344.7103-11-armbru@redhat.com>
2018-08-16qobject: New qobject_from_vjsonf_nofail(), qdict_from_vjsonf_nofail()Markus Armbruster
Every printf()-like function sooner or later needs its vprintf()-like buddy. The next commit will need qobject_from_jsonf_nofail()'s buddy, and qdict_from_jsonf_nofail()'s buddy will be used later in this series. Add both. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180806065344.7103-8-armbru@redhat.com>
2018-08-16qobject: Replace qobject_from_jsonf() by qobject_from_jsonf_nofail()Markus Armbruster
Commit ab45015a968 "qobject: Let qobject_from_jsonf() fail instead of abort" fails to accomplish its stated aim: the function can still abort due to its use of &error_abort. Its rationale for letting it fail is that all remaining users cope fine with failure. Well, they're just fine with aborting, too; it's what they do on failure. Simply reverting the broken commit would bring back the unfortunate asymmetry between qobject_from_jsonf() and qobject_from_jsonv(): one aborts, the other returns null. So also rename it to qobject_from_jsonf_nofail(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180806065344.7103-7-armbru@redhat.com>
2018-07-03qobject: New qdict_from_jsonf_nofail()Markus Armbruster
Many uses of qobject_from_jsonf() convert JSON objects. Create new convenience function qdict_from_jsonf_nofail() that includes the conversion to QDict. The next few commits will put it to use. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180703085358.13941-22-armbru@redhat.com>
2018-02-09Include qapi/qmp/qstring.h exactly where neededMarkus Armbruster
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: <20180201111846.21846-14-armbru@redhat.com>
2018-02-09Include qapi/qmp/qobject.h exactly where neededMarkus Armbruster
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: <20180201111846.21846-11-armbru@redhat.com>
2017-03-07qobject: Propagate parse errors through qobject_from_json()Markus Armbruster
The next few commits will put the errors to use where appropriate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1488317230-26248-13-git-send-email-armbru@redhat.com>
2017-03-07qobject: Propagate parse errors through qobject_from_jsonv()Markus Armbruster
The next few commits will put the errors to use where appropriate. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <1488317230-26248-9-git-send-email-armbru@redhat.com>
2016-02-23include: Clean up includesPeter Maydell
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. NB: If this commit breaks compilation for your out-of-tree patchseries or fork, then you need to make sure you add #include "qemu/osdep.h" to any new .c files that you have. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
2014-03-03qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() ↵Peter Maydell
declaration The function qobject_from_json() doesn't actually allow its argument to be a format string -- it passes a NULL va_list* to qobject_from_jsonv(), and the parser code will then never actually interpret %-escape sequences (it tests whether the va_list pointer is NULL and will stop with a parse error). The spurious attribute markup causes clang warnings in some of the test cases where we programmatically construct JSON to feed to qobject_from_json(): tests/test-qmp-input-visitor.c:76:35: warning: format string is not a string literal (potentially insecure) [-Wformat-security] data->obj = qobject_from_json(json_string); ^~~~~~~~~~~ Remove the incorrect attribute. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19qapi: move include files to include/qobject/Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>