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2015-10-29qstring: Make conversion from QObject * accept nullMarkus Armbruster1-8/+3
qobject_to_qstring() crashes on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-7-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-10-29qfloat qint: Make conversion from QObject * accept nullMarkus Armbruster1-8/+3
qobject_to_qfloat() and qobject_to_qint() crash on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-5-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-10-29qdict: Make conversion from QObject * accept nullMarkus Armbruster1-3/+3
qobject_to_qdict() crashes on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-4-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-10-29qbool: Make conversion from QObject * accept nullMarkus Armbruster1-8/+3
qobject_to_qbool() crashes on null, which is a trap for the unwary. Return null instead, and simplify a few callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1444918537-18107-3-git-send-email-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qobject: Use 'bool' inside qdictEric Blake1-2/+2
Now that qbool is fixed, let's fix getting and setting a bool value to a qdict member to also use C99 bool rather than int. I audited all callers to ensure that the changed return type will not cause any changed semantics. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-06-22qobject: Use 'bool' for qboolEric Blake1-2/+2
We require a C99 compiler, so let's use 'bool' instead of 'int' when dealing with boolean values. There are few enough clients to fix them all in one pass. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Alberto Garcia <berto@igalia.com> Acked-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2015-06-12qdict: Add qdict_{set,copy}_default()Kevin Wolf1-0/+33
In the block layer functions that determine options for a child block device, it's a common pattern to either copy options from the parent's options or to set a default string if the option isn't explicitly set yet for the child. Provide convenience functions so that it becomes a one-liner for each option. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2015-06-12qdict: Add qdict_array_entries()Kevin Wolf1-4/+74
This counts the entries in a flattened array in a QDict without actually splitting the QDict into a QList. bdrv_open_image() doesn't take a QList, but rather a QDict and a key prefix string, so this is more convenient for block drivers which have a dynamically sized list of child nodes (e.g. Quorum) and are to be converted to using bdrv_open_image() as the standard interface for opening child nodes. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
2014-05-19qdict: Add qdict_join()Max Reitz1-0/+32
This function joins two QDicts by absorbing one into the other. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-02-21qdict: Extract non-QDicts in qdict_array_split()Max Reitz1-14/+46
Currently, qdict_array_split() only splits off entries with a key prefix of "%u.", packing them into a new QDict. This patch makes it support entries with the plain key "%u" as well, directly putting them into the new QList without creating a QDict. If there is both an entry with a key of "%u" and other entries with keys prefixed "%u." (for the same index), the function simply terminates. To do this, this patch also adds a static function which tests whether a given QDict contains any keys with the given prefix. This is used to test whether entries with a key prefixed "%u." do exist in the source QDict without modifying it. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qapi: extend qdict_flatten() for QListsMax Reitz1-6/+48
Reversing qdict_array_split(), qdict_flatten() should flatten QLists as well by interpreting them as QDicts where every entry's key is its index. This allows bringing QDicts with QLists from QMP commands to the same form as they would be given as command-line options, thereby allowing them to be parsed the same way. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2014-01-22qdict: Add qdict_array_split()Max Reitz1-0/+37
This function splits a QDict consisting of entries prefixed by incrementally enumerated indices into a QList of QDicts. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-11-29qdict: Optimise qdict_do_flatten()Kevin Wolf1-3/+7
Nested QDicts used to be both entered recursively in order to move their entries to the target QDict and also be moved themselves to the target QDict like all other objects. This is harmless because for the top level, qdict_do_flatten() will encounter the (now empty) QDict for a second time and then delete it, but at the same time it's obviously unnecessary overhead. Just delete nested QDicts directly after moving all of their entries. Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-11-29qdict: Fix memory leak in qdict_do_flatten()Kevin Wolf1-1/+3
Reported-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-09-25qdict: Extract qdict_extract_subqdictBenoît Canet1-0/+21
Signed-off-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2013-07-26Implement qdict_flatten()Kevin Wolf1-0/+51
qdict_flatten(): For each nested QDict with key x, all fields with key y are moved to this QDict and their key is renamed to "x.y". This operation is applied recursively for nested QDicts. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
2013-03-15Add qdict_clone_shallow()Kevin Wolf1-0/+22
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2013-01-12build: move qobject files to qobject/ and libqemuutil.aPaolo Bonzini1-0/+456
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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