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[PULL,11/18] QemuOpts: Add qemu_opt_unset()

Message ID 1374870032-31672-12-git-send-email-kwolf@redhat.com
State New
Headers show

Commit Message

Kevin Wolf July 26, 2013, 8:20 p.m. UTC 
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 include/qemu/option.h |  1 +
 util/qemu-option.c    | 14 ++++++++++++++
 2 files changed, 15 insertions(+)
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Patch

diff --git a/include/qemu/option.h b/include/qemu/option.h
index a83c700..13f5e72 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -120,6 +120,7 @@  bool qemu_opt_has_help_opt(QemuOpts *opts);
 bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval);
 uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);
 uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
+int qemu_opt_unset(QemuOpts *opts, const char *name);
 int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
 void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
                       Error **errp);
diff --git a/util/qemu-option.c b/util/qemu-option.c
index e0ef426..5d686c8 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -593,6 +593,20 @@  static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc,
     return NULL;
 }
 
+int qemu_opt_unset(QemuOpts *opts, const char *name)
+{
+    QemuOpt *opt = qemu_opt_find(opts, name);
+
+    assert(opts_accepts_any(opts));
+
+    if (opt == NULL) {
+        return -1;
+    } else {
+        qemu_opt_del(opt);
+        return 0;
+    }
+}
+
 static void opt_set(QemuOpts *opts, const char *name, const char *value,
                     bool prepend, Error **errp)
 {