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linux-user: Fix broken "-version" option 

Fix the "-version" option, which was accidentally broken in commit
fc9c541:
 * exit after printing version information rather than proceeding
   blithely onward (and likely printing the full usage message)
 * correct the cut-n-paste error in the usage message for it
 * don't insist on the presence of a following argument for
   options which don't take an argument (this was preventing
   'qemu-arm -version' from working)
 * remove a spurious argc check from the beginning of main() which
   meant 'QEMU_VERSION=1 qemu-arm' didn't work.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
This commit is contained in:
Peter Maydell 2011-09-29 15:48:12 +01:00 committed by Andrzej Zaborowski
parent c2e2343e1f
commit 1386d4c0f5
1 changed files with 8 additions and 11 deletions
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19
linux-user/main.c
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@ -3084,6 +3084,7 @@ static void handle_arg_version(const char *arg)
{ {
printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION printf("qemu-" TARGET_ARCH " version " QEMU_VERSION QEMU_PKGVERSION
", Copyright (c) 2003-2008 Fabrice Bellard\n"); ", Copyright (c) 2003-2008 Fabrice Bellard\n");
exit(0);
} }
struct qemu_argument { struct qemu_argument {
@ -3129,7 +3130,7 @@ struct qemu_argument arg_table[] = {
{"strace", "QEMU_STRACE", false, handle_arg_strace, {"strace", "QEMU_STRACE", false, handle_arg_strace,
"", "log system calls"}, "", "log system calls"},
{"version", "QEMU_VERSION", false, handle_arg_version, {"version", "QEMU_VERSION", false, handle_arg_version,
"", "log system calls"}, "", "display version information and exit"},
{NULL, NULL, false, NULL, NULL, NULL} {NULL, NULL, false, NULL, NULL, NULL}
}; };
@ -3231,16 +3232,15 @@ static int parse_args(int argc, char **argv)
for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) { for (arginfo = arg_table; arginfo->handle_opt != NULL; arginfo++) {
if (!strcmp(r, arginfo->argv)) { if (!strcmp(r, arginfo->argv)) {
if (optind >= argc) {
usage();
}
arginfo->handle_opt(argv[optind]);
if (arginfo->has_arg) { if (arginfo->has_arg) {
if (optind >= argc) {
usage();
}
arginfo->handle_opt(argv[optind]);
optind++; optind++;
} else {
arginfo->handle_opt(NULL);
} }
break; break;
} }
} }
@ -3276,9 +3276,6 @@ int main(int argc, char **argv, char **envp)
int i; int i;
int ret; int ret;
if (argc <= 1)
usage();
qemu_cache_utils_init(envp); qemu_cache_utils_init(envp);
if ((envlist = envlist_create()) == NULL) { if ((envlist = envlist_create()) == NULL) {