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From 1201a6e29a7f8359588a3b635acbe12697325e66 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Mon, 9 Sep 2013 14:28:18 +0200
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Subject: [PATCH 27/38] QemuOpts: Add qemu_opt_unset()
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <1378736903-18489-28-git-send-email-kwolf@redhat.com>
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Patchwork-id: 54214
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 27/32] QemuOpts: Add qemu_opt_unset()
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Bugzilla: 1005818
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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Bugzilla: 1005818
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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(cherry picked from commit 0dd6c5266313c861cf36476da86599d368ec41fc)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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 include/qemu/option.h |  1 +
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 util/qemu-option.c    | 14 ++++++++++++++
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 2 files changed, 15 insertions(+)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 include/qemu/option.h |    1 +
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 util/qemu-option.c    |   14 ++++++++++++++
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 2 files changed, 15 insertions(+), 0 deletions(-)
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diff --git a/include/qemu/option.h b/include/qemu/option.h
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index bdb6d21..9db74fb 100644
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--- a/include/qemu/option.h
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+++ b/include/qemu/option.h
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@@ -122,6 +122,7 @@ bool qemu_opt_has_help_opt(QemuOpts *opts);
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 bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval);
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 uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);
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 uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
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+int qemu_opt_unset(QemuOpts *opts, const char *name);
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 int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
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 void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
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                       Error **errp);
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diff --git a/util/qemu-option.c b/util/qemu-option.c
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index bdfbdb4..37e7640 100644
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--- a/util/qemu-option.c
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+++ b/util/qemu-option.c
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@@ -623,6 +623,20 @@ static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc,
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     return NULL;
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 }
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+int qemu_opt_unset(QemuOpts *opts, const char *name)
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+{
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+    QemuOpt *opt = qemu_opt_find(opts, name);
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+
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+    assert(opts_accepts_any(opts));
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+
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+    if (opt == NULL) {
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+        return -1;
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+    } else {
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+        qemu_opt_del(opt);
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+        return 0;
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+    }
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+}
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+
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 static void opt_set(QemuOpts *opts, const char *name, const char *value,
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                     bool prepend, Error **errp)
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 {
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-- 
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1.7.1
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