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sockets: use error class to pass listen error

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Add a new argument in inet_listen()/inet_listen_opts()
to pass back listen error.

Change nbd, qemu-char, vnc to use new interface.

Signed-off-by: Amos Kong <akong@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Amos Kong 2012-05-11 00:28:26 +08:00 committed by Anthony Liguori
parent a6ba35b3be
commit 029409e5a9
5 changed files with 20 additions and 8 deletions
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2
nbd.c
View file

@ -176,7 +176,7 @@ int tcp_socket_incoming_spec(const char *address_and_port)
{
char *ostr = NULL;
int olen = 0;
return inet_listen(address_and_port, ostr, olen, SOCK_STREAM, 0);
return inet_listen(address_and_port, ostr, olen, SOCK_STREAM, 0, NULL);
}
int unix_socket_incoming(const char *path)

2
qemu-char.c
View file

@ -2444,7 +2444,7 @@ static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
}
} else {
if (is_listen) {
fd = inet_listen_opts(opts, 0);
fd = inet_listen_opts(opts, 0, NULL);
} else {
fd = inet_connect_opts(opts, NULL);
}

17
qemu-sockets.c
View file

@ -103,7 +103,7 @@ const char *inet_strfamily(int family)
return "unknown";
}
int inet_listen_opts(QemuOpts *opts, int port_offset)
int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp)
{
struct addrinfo ai,*res,*e;
const char *addr;
@ -120,6 +120,7 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
if ((qemu_opt_get(opts, "host") == NULL) ||
(qemu_opt_get(opts, "port") == NULL)) {
fprintf(stderr, "%s: host and/or port not specified\n", __FUNCTION__);
error_set(errp, QERR_SOCKET_CREATE_FAILED);
return -1;
}
pstrcpy(port, sizeof(port), qemu_opt_get(opts, "port"));
@ -138,6 +139,7 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
if (rc != 0) {
fprintf(stderr,"getaddrinfo(%s,%s): %s\n", addr, port,
gai_strerror(rc));
error_set(errp, QERR_SOCKET_CREATE_FAILED);
return -1;
}
@ -150,6 +152,9 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
if (slisten < 0) {
fprintf(stderr,"%s: socket(%s): %s\n", __FUNCTION__,
inet_strfamily(e->ai_family), strerror(errno));
if (!e->ai_next) {
error_set(errp, QERR_SOCKET_CREATE_FAILED);
}
continue;
}
@ -173,6 +178,9 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
fprintf(stderr,"%s: bind(%s,%s,%d): %s\n", __FUNCTION__,
inet_strfamily(e->ai_family), uaddr, inet_getport(e),
strerror(errno));
if (!e->ai_next) {
error_set(errp, QERR_SOCKET_BIND_FAILED);
}
}
}
closesocket(slisten);
@ -183,6 +191,7 @@ int inet_listen_opts(QemuOpts *opts, int port_offset)
listen:
if (listen(slisten,1) != 0) {
error_set(errp, QERR_SOCKET_LISTEN_FAILED);
perror("listen");
closesocket(slisten);
freeaddrinfo(res);
@ -446,7 +455,7 @@ static int inet_parse(QemuOpts *opts, const char *str)
}
int inet_listen(const char *str, char *ostr, int olen,
int socktype, int port_offset)
int socktype, int port_offset, Error **errp)
{
QemuOpts *opts;
char *optstr;
@ -454,7 +463,7 @@ int inet_listen(const char *str, char *ostr, int olen,
opts = qemu_opts_create(&dummy_opts, NULL, 0);
if (inet_parse(opts, str) == 0) {
sock = inet_listen_opts(opts, port_offset);
sock = inet_listen_opts(opts, port_offset, errp);
if (sock != -1 && ostr) {
optstr = strchr(str, ',');
if (qemu_opt_get_bool(opts, "ipv6", 0)) {
@ -469,6 +478,8 @@ int inet_listen(const char *str, char *ostr, int olen,
optstr ? optstr : "");
}
}
} else {
error_set(errp, QERR_SOCKET_CREATE_FAILED);
}
qemu_opts_del(opts);
return sock;

4
qemu_socket.h
View file

@ -39,9 +39,9 @@ void socket_set_nonblock(int fd);
int send_all(int fd, const void *buf, int len1);
/* New, ipv6-ready socket helper functions, see qemu-sockets.c */
int inet_listen_opts(QemuOpts *opts, int port_offset);
int inet_listen_opts(QemuOpts *opts, int port_offset, Error **errp);
int inet_listen(const char *str, char *ostr, int olen,
int socktype, int port_offset);
int socktype, int port_offset, Error **errp);
int inet_connect_opts(QemuOpts *opts, Error **errp);
int inet_connect(const char *str, bool block, Error **errp);
int inet_dgram_opts(QemuOpts *opts);

3
ui/vnc.c
View file

@ -3088,7 +3088,8 @@ int vnc_display_open(DisplayState *ds, const char *display)
pstrcpy(dpy, 256, "unix:");
vs->lsock = unix_listen(display+5, dpy+5, 256-5);
} else {
vs->lsock = inet_listen(display, dpy, 256, SOCK_STREAM, 5900);
vs->lsock = inet_listen(display, dpy, 256,
SOCK_STREAM, 5900, NULL);
}
if (-1 == vs->lsock) {
g_free(dpy);