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keyval: introduce keyval_merge

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This patch introduces a function that merges two keyval-produced
(or keyval-like) QDicts.  It can be used to emulate the behavior of
.merge_lists = true QemuOpts groups, merging -readconfig sections and
command-line options in a single QDict, and also to implement -set.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2020-11-12 08:40:11 -05:00
parent 3bb6944585
commit 9176e800db
3 changed files with 139 additions and 0 deletions
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1
include/qemu/option.h
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@ -149,5 +149,6 @@ QemuOptsList *qemu_opts_append(QemuOptsList *dst, QemuOptsList *list);
QDict *keyval_parse(const char *params, const char *implied_key,
bool *help, Error **errp);
void keyval_merge(QDict *old, const QDict *new, Error **errp);
#endif