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[Qemu-devel] [PATCH 9/9] vhost-user: Improve -netdev/netdev_add/-net/...
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH 9/9] vhost-user: Improve -netdev/netdev_add/-net/... error reporting |
Date: |
Thu, 28 May 2015 14:21:35 +0200 |
When -netdev vhost-user fails, it first reports a specific error, then
one or more generic ones, like this:
$ qemu-system-x86_64 -netdev vhost-user,id=foo,chardev=xxx
qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: chardev "xxx"
not found
qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: No suitable
chardev found
qemu-system-x86_64: -netdev vhost-user,id=foo,chardev=xxx: Device
'vhost-user' could not be initialized
With the command line, the messages go to stderr. In HMP, they go to
the monitor. In QMP, the last one becomes the error reply, and the
others go to stderr.
Convert net_init_vhost_user() and its helpers to Error. This
suppresses the unwanted unspecific error messages, and makes the
specific error the QMP error reply.
Cc: Stefan Hajnoczi <address@hidden>
Cc: Jason Wang <address@hidden>
Signed-off-by: Markus Armbruster <address@hidden>
---
net/vhost-user.c | 27 ++++++++++++---------------
1 file changed, 12 insertions(+), 15 deletions(-)
diff --git a/net/vhost-user.c b/net/vhost-user.c
index 2effe29..49d340e 100644
--- a/net/vhost-user.c
+++ b/net/vhost-user.c
@@ -166,34 +166,34 @@ static int net_vhost_chardev_opts(void *opaque,
} else if (strcmp(name, "server") == 0) {
props->is_server = true;
} else {
- error_report("vhost-user does not support a chardev"
- " with the following option:\n %s = %s",
- name, value);
+ error_setg(errp,
+ "vhost-user does not support a chardev with option %s=%s",
+ name, value);
return -1;
}
return 0;
}
-static CharDriverState *net_vhost_parse_chardev(const NetdevVhostUserOptions
*opts)
+static CharDriverState *net_vhost_parse_chardev(
+ const NetdevVhostUserOptions *opts, Error **errp)
{
CharDriverState *chr = qemu_chr_find(opts->chardev);
VhostUserChardevProps props;
if (chr == NULL) {
- error_report("chardev \"%s\" not found", opts->chardev);
+ error_setg(errp, "chardev \"%s\" not found", opts->chardev);
return NULL;
}
/* inspect chardev opts */
memset(&props, 0, sizeof(props));
- if (qemu_opt_foreach(chr->opts, net_vhost_chardev_opts, &props,
- &error_abort)) {
+ if (qemu_opt_foreach(chr->opts, net_vhost_chardev_opts, &props, errp)) {
return NULL;
}
if (!props.is_socket || !props.is_unix) {
- error_report("chardev \"%s\" is not a unix socket",
- opts->chardev);
+ error_setg(errp, "chardev \"%s\" is not a unix socket",
+ opts->chardev);
return NULL;
}
@@ -217,7 +217,7 @@ static int net_vhost_check_net(void *opaque, QemuOpts
*opts, Error **errp)
if (strcmp(netdev, name) == 0 &&
strncmp(driver, virtio_name, strlen(virtio_name)) != 0) {
- error_report("vhost-user requires frontend driver virtio-net-*");
+ error_setg(errp, "vhost-user requires frontend driver virtio-net-*");
return -1;
}
@@ -227,25 +227,22 @@ static int net_vhost_check_net(void *opaque, QemuOpts
*opts, Error **errp)
int net_init_vhost_user(const NetClientOptions *opts, const char *name,
NetClientState *peer, Error **errp)
{
- /* FIXME error_setg(errp, ...) on failure */
const NetdevVhostUserOptions *vhost_user_opts;
CharDriverState *chr;
assert(opts->kind == NET_CLIENT_OPTIONS_KIND_VHOST_USER);
vhost_user_opts = opts->vhost_user;
- chr = net_vhost_parse_chardev(vhost_user_opts);
+ chr = net_vhost_parse_chardev(vhost_user_opts, errp);
if (!chr) {
- error_report("No suitable chardev found");
return -1;
}
/* verify net frontend */
if (qemu_opts_foreach(qemu_find_opts("device"), net_vhost_check_net,
- (char *)name, &error_abort)) {
+ (char *)name, errp)) {
return -1;
}
-
return net_vhost_user_init(peer, "vhost_user", name, chr);
}
--
1.9.3
- [Qemu-devel] [PATCH 0/9] Miscellaneous error reporting improvements, Markus Armbruster, 2015/05/28
- [Qemu-devel] [PATCH 1/9] vl: Report failure to sandbox at most once, Markus Armbruster, 2015/05/28
- [Qemu-devel] [PATCH 9/9] vhost-user: Improve -netdev/netdev_add/-net/... error reporting,
Markus Armbruster <=
- [Qemu-devel] [PATCH 2/9] vl: Print -device help at most once, Markus Armbruster, 2015/05/28
- [Qemu-devel] [PATCH 7/9] QemuOpts: Drop qemu_opt_foreach() parameter abort_on_failure, Markus Armbruster, 2015/05/28
- [Qemu-devel] [PATCH 8/9] QemuOpts: Convert qemu_opt_foreach() to Error, Markus Armbruster, 2015/05/28
- [Qemu-devel] [PATCH 3/9] vl: Fail right after first bad -object, Markus Armbruster, 2015/05/28
- [Qemu-devel] [PATCH 4/9] QemuOpts: Drop qemu_opts_foreach() parameter abort_on_failure, Markus Armbruster, 2015/05/28