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[Qemu-devel] [PATCH 2/2] vl.c: reduce exit on error code duplication
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH 2/2] vl.c: reduce exit on error code duplication |
Date: |
Wed, 15 Oct 2014 13:03:23 +0200 |
use exit_if_error() helper instead of a bunch of
if (local_err) {
error_report(foo);
error_free(local_err);
exit(1);
}
code blocks
Signed-off-by: Igor Mammedov <address@hidden>
---
vl.c | 58 ++++++++++++++++++++++++++++++----------------------------
1 file changed, 30 insertions(+), 28 deletions(-)
diff --git a/vl.c b/vl.c
index f563da1..151ee2d 100644
--- a/vl.c
+++ b/vl.c
@@ -582,6 +582,30 @@ static void res_free(void)
}
}
+static void GCC_FMT_ATTR(2, 3) exit_if_error(Error *err, const char *fmt, ...)
+{
+ va_list ap;
+
+ if (!err) {
+ return;
+ }
+
+ if (fmt) {
+ char *optional_msg = NULL;
+
+ va_start(ap, fmt);
+ optional_msg = g_strdup_vprintf(fmt, ap);
+ va_end(ap);
+ error_report("%s: %s", optional_msg, error_get_pretty(err));
+ g_free(optional_msg);
+ } else {
+ error_report("%s", error_get_pretty(err));
+ }
+
+ error_free(err);
+ exit(EXIT_FAILURE);
+}
+
static int default_driver_check(QemuOpts *opts, void *opaque)
{
const char *driver = qemu_opt_get(opts, "driver");
@@ -2380,11 +2404,7 @@ static int chardev_init_func(QemuOpts *opts, void
*opaque)
Error *local_err = NULL;
qemu_chr_new_from_opts(opts, NULL, &local_err);
- if (local_err) {
- error_report("%s", error_get_pretty(local_err));
- error_free(local_err);
- return -1;
- }
+ exit_if_error(local_err, NULL);
return 0;
}
@@ -2790,12 +2810,7 @@ static int machine_set_property(const char *name, const
char *value,
string_input_visitor_cleanup(siv);
g_free(qom_name);
- if (local_err) {
- qerror_report_err(local_err);
- error_free(local_err);
- return -1;
- }
-
+ exit_if_error(local_err, NULL);
return 0;
}
@@ -4190,11 +4205,7 @@ int main(int argc, char **argv, char **envp)
if (qtest_chrdev) {
qtest_init(qtest_chrdev, qtest_log, &local_err);
- if (local_err) {
- error_report("%s", error_get_pretty(local_err));
- error_free(local_err);
- exit(1);
- }
+ exit_if_error(local_err, NULL);
}
machine_opts = qemu_get_machine_opts();
@@ -4434,12 +4445,8 @@ int main(int argc, char **argv, char **envp)
if (vnc_display) {
vnc_display_init(ds);
vnc_display_open(ds, vnc_display, &local_err);
- if (local_err != NULL) {
- error_report("Failed to start VNC server on `%s': %s",
- vnc_display, error_get_pretty(local_err));
- error_free(local_err);
- exit(1);
- }
+ exit_if_error(local_err, "Failed to start VNC server on '%s'",
+ vnc_display);
if (show_vnc_port) {
printf("VNC server running on `%s'\n", vnc_display_local_addr(ds));
@@ -4487,12 +4494,7 @@ int main(int argc, char **argv, char **envp)
if (incoming) {
qemu_start_incoming_migration(incoming, &local_err);
- if (local_err) {
- error_report("-incoming %s: %s", incoming,
- error_get_pretty(local_err));
- error_free(local_err);
- exit(1);
- }
+ exit_if_error(local_err, "-incoming %s", incoming);
} else if (autostart) {
vm_start();
}
--
1.9.3 (Apple Git-50)