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#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <kvm/util.h>
#include <kvm/kvm-cmd.h>
#include <kvm/builtin-balloon.h>
#include <kvm/parse-options.h>
#include <kvm/kvm.h>
#include <kvm/kvm-ipc.h>
static const char *instance_name;
static u64 inflate;
static u64 deflate;
static const char * const balloon_usage[] = {
"lkvm balloon [-n name] [-p pid] [-i amount] [-d amount]",
NULL
};
static const struct option balloon_options[] = {
OPT_GROUP("Instance options:"),
OPT_STRING('n', "name", &instance_name, "name", "Instance name"),
OPT_GROUP("Balloon options:"),
OPT_U64('i', "inflate", &inflate, "Amount to inflate (in MB)"),
OPT_U64('d', "deflate", &deflate, "Amount to deflate (in MB)"),
OPT_END(),
};
void kvm_balloon_help(void)
{
usage_with_options(balloon_usage, balloon_options);
}
static void parse_balloon_options(int argc, const char **argv)
{
while (argc != 0) {
argc = parse_options(argc, argv, balloon_options, balloon_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (argc != 0)
kvm_balloon_help();
}
}
int kvm_cmd_balloon(int argc, const char **argv, const char *prefix)
{
int instance;
int r;
int amount;
parse_balloon_options(argc, argv);
if (inflate == 0 && deflate == 0)
kvm_balloon_help();
if (instance_name == NULL)
kvm_balloon_help();
instance = kvm__get_sock_by_instance(instance_name);
if (instance <= 0)
die("Failed locating instance");
if (inflate)
amount = inflate;
else if (deflate)
amount = -deflate;
else
kvm_balloon_help();
r = kvm_ipc__send_msg(instance, KVM_IPC_BALLOON,
sizeof(amount), (u8 *)&amount);
close(instance);
if (r < 0)
return -1;
return 0;
}
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