kvmctl does its own parsing of argc/argv. Other than being hard to maintain,
the recent --smp addition seems to have broken -32. This patch switches kvmctl
to use getopt(). This changes the -32 option to --protected-mode (or -p).
This patch also adds a --help option.
Signed-off-by: Anthony Liguori <[EMAIL PROTECTED]>
diff --git a/user/main.c b/user/main.c
index 804d5f0..ef7d488 100644
--- a/user/main.c
+++ b/user/main.c
@@ -14,6 +14,8 @@
* This work is licensed under the GNU LGPL license, version 2.
*/
+#define _GNU_SOURCE
+
#include "kvmctl.h"
#include "test/apic.h"
@@ -30,6 +32,8 @@
#include <pthread.h>
#include <sys/syscall.h>
#include <linux/unistd.h>
+#include <getopt.h>
+#include <stdbool.h>
static int gettid(void)
{
@@ -313,21 +317,18 @@ static void start_vcpu(int n)
pthread_create(&thread, NULL, do_create_vcpu, (void *)(long)n);
}
-const char *progname;
-
-static void usage()
-{
- fprintf(stderr, "usage: %s [--smp n] [bootstrap] flatfile\n", progname);
- exit(1);
-}
-
-static int isarg(const char *arg, const char *longform, const char *shortform)
+static void usage(const char *progname)
{
- if (longform && strcmp(arg, longform) == 0)
- return 1;
- if (shortform && strcmp(arg, shortform) == 0)
- return 1;
- return 0;
+ fprintf(stderr,
+ "Usage: %s [OPTIONS] [bootstrap] flatfile\n"
+ "KVM test harness.\n"
+ "\n"
+ " -s, --smp=NUM create a VM with NUM virtual CPUs\n"
+ " -p, --protected-mode start VM in protected mode\n"
+ " -h, --help display this help screen and exit\n"
+ "\n"
+ "Report bugs to <kvm-devel@lists.sourceforge.net>.\n"
+ , progname);
}
static void sig_ignore(int sig)
@@ -335,25 +336,50 @@ static void sig_ignore(int sig)
write(1, "boo\n", 4);
}
-int main(int ac, char **av)
+int main(int argc, char **argv)
{
void *vm_mem;
int i;
-
- progname = av[0];
- while (ac > 1 && av[1][0] =='-') {
- if (isarg(av[1], "--smp", "-s")) {
- if (ac <= 2)
- usage();
- ncpus = atoi(av[2]);
- if (ncpus < 1)
- usage();
- ++av, --ac;
- } else
- usage();
- ++av, --ac;
+ const char *sopts = "s:ph";
+ struct option lopts[] = {
+ { "smp", 1, 0, 's' },
+ { "protected-mode", 0, 0, 'p' },
+ { "help", 0, 0, 'h' },
+ { 0 },
+ };
+ int opt_ind, ch;
+ bool enter_protected_mode = false;
+ int nb_args;
+
+ while ((ch = getopt_long(argc, argv, sopts, lopts, &opt_ind)) != -1) {
+ switch (ch) {
+ case 's':
+ ncpus = atoi(optarg);
+ break;
+ case 'p':
+ enter_protected_mode = true;
+ break;
+ case 'h':
+ usage(argv[0]);
+ exit(0);
+ case '?':
+ default:
+ fprintf(stderr,
+ "Try `%s --help' for more information.\n",
+ argv[0]);
+ exit(1);
+ }
}
+ nb_args = argc - optind;
+ if (nb_args < 1 || nb_args > 2) {
+ fprintf(stderr,
+ "Incorrect number of arguments.\n"
+ "Try `%s --help' for more information.\n",
+ argv[0]);
+ exit(1);
+ }
+
signal(IPI_SIGNAL, sig_ignore);
vcpus = calloc(ncpus, sizeof *vcpus);
@@ -372,14 +398,14 @@ int main(int ac, char **av)
fprintf(stderr, "kvm_create failed\n");
return 1;
}
- if (ac > 1) {
- if (strcmp(av[1], "-32") != 0)
- load_file(vm_mem + 0xf0000, av[1]);
- else
- enter_32(kvm);
- }
- if (ac > 2)
- load_file(vm_mem + 0x100000, av[2]);
+
+ if (enter_protected_mode)
+ enter_32(kvm);
+ else
+ load_file(vm_mem + 0xf0000, argv[optind]);
+
+ if (nb_args > 1)
+ load_file(vm_mem + 0x100000, argv[optind + 1]);
sem_init(&init_sem, 0, 0);
init_vcpu(0);
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