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qemu-char: ask and print error information from qemu-sockets

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Before:

    $ qemu-system-x86_64 -monitor tcp:localhost:6000
    (starts despite error)

    $ qemu-system-x86_64 -monitor tcp:foo.bar:12345
    getaddrinfo(foo.bar,12345): Name or service not known
    chardev: opening backend "socket" failed

    $ qemu-system-x86_64 -monitor tcp:localhost:443,server=on
    inet_listen_opts: bind(ipv4,127.0.0.1,443): Permission denied
    inet_listen_opts: FAILED
    chardev: opening backend "socket" failed

After:

    $ x86_64-softmmu/qemu-system-x86_64 -monitor tcp:localhost:6000
    x86_64-softmmu/qemu-system-x86_64: -monitor tcp:localhost:6000: Failed to connect to socket: Connection refused
    chardev: opening backend "socket" failed

    $ x86_64-softmmu/qemu-system-x86_64 -monitor tcp:foo.bar:12345
    qemu-system-x86_64: -monitor tcp:foo.bar:12345: address resolution failed for foo.bar:12345: Name or service not known
    chardev: opening backend "socket" failed

    $ x86_64-softmmu/qemu-system-x86_64 -monitor tcp:localhost:443,server=on
    qemu-system-x86_64: -monitor tcp:localhost:443,server=on: Failed to bind socket: Permission denied
    chardev: opening backend "socket" failed

Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2012-10-23 13:54:56 +02:00
parent 43eaae28e0
commit 87d5f24f3f
1 changed files with 17 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
qemu-char.c
+17 -6
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@@ -2097,12 +2097,13 @@ static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
{
CharDriverState *chr = NULL;
NetCharDriver *s = NULL;
Error *local_err = NULL;
int fd = -1;
chr = g_malloc0(sizeof(CharDriverState));
s = g_malloc0(sizeof(NetCharDriver));
fd = inet_dgram_opts(opts, NULL);
fd = inet_dgram_opts(opts, &local_err);
if (fd < 0) {
fprintf(stderr, "inet_dgram_opts failed\n");
goto return_err;
@@ -2118,6 +2119,10 @@ static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
return chr;
return_err:
if (local_err) {
qerror_report_err(local_err);
error_free(local_err);
}
g_free(chr);
g_free(s);
if (fd >= 0) {
@@ -2428,6 +2433,7 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
{
CharDriverState *chr = NULL;
TCPCharDriver *s = NULL;
Error *local_err = NULL;
int fd = -1;
int is_listen;
int is_waitconnect;
@@ -2448,15 +2454,15 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
if (is_unix) {
if (is_listen) {
fd = unix_listen_opts(opts, NULL);
fd = unix_listen_opts(opts, &local_err);
} else {
fd = unix_connect_opts(opts, NULL, NULL, NULL);
fd = unix_connect_opts(opts, &local_err, NULL, NULL);
}
} else {
if (is_listen) {
fd = inet_listen_opts(opts, 0, NULL);
fd = inet_listen_opts(opts, 0, &local_err);
} else {
fd = inet_connect_opts(opts, NULL, NULL, NULL);
fd = inet_connect_opts(opts, &local_err, NULL, NULL);
}
}
if (fd < 0) {
@@ -2517,8 +2523,13 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
return chr;
fail:
if (fd >= 0)
if (local_err) {
qerror_report_err(local_err);
error_free(local_err);
}
if (fd >= 0) {
closesocket(fd);
}
g_free(s);
g_free(chr);
return NULL;