From: Gonglei <arei.gong...@huawei.com>
commit abfd9ce3(migration: dump vmstate info as a json
file for static analysis) introduce a new command,
'-dump-vmstate', that takes a filename
as an argument. When executed, QEMU will dump the vmstate information
for the machine type it's invoked with to the file, and quit.
However, only one instance of the -dump-vmstate option is supported.
If more were given, the vmstate_dump_file variable would be overwritten.
This fix also helps silence a Coverity error.
Signed-off-by: Gonglei <arei.gong...@huawei.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
vl.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/vl.c b/vl.c
index f5721d1..f070c90 100644
--- a/vl.c
+++ b/vl.c
@@ -3750,6 +3750,11 @@ int main(int argc, char **argv, char **envp)
configure_msg(opts);
break;
case QEMU_OPTION_dump_vmstate:
+ if (vmstate_dump_file) {
+ fprintf(stderr, "qemu: only one '-dump-vmstate' "
+ "option may be given\n");
+ exit(1);
+ }
vmstate_dump_file = fopen(optarg, "w");
if (vmstate_dump_file == NULL) {
fprintf(stderr, "open %s: %s\n", optarg, strerror(errno));
--
1.8.3.1
