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sockets: add unix_listen_opts 

Add unix_listen_opts().  Does the same as unix_listen(), but uses
QemuOpts.  unix_listen() is a compatibility wrapper for
unix_listen_opts() now and should go away some day.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2009-09-10 10:58:38 +02:00 committed by Anthony Liguori
parent 2af2bf6760
commit 62b6adfbe0
2 changed files with 34 additions and 14 deletions
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47
qemu-sockets.c
View File

@ -329,11 +329,11 @@ int inet_connect(const char *str, int socktype)
#ifndef _WIN32
int unix_listen(const char *str, char *ostr, int olen)
int unix_listen_opts(QemuOpts *opts)
{
struct sockaddr_un un;
char *path, *opts;
int sock, fd, len;
const char *path = qemu_opt_get(opts, "path");
int sock, fd;
sock = socket(PF_UNIX, SOCK_STREAM, 0);
if (sock < 0) {
@ -341,14 +341,6 @@ int unix_listen(const char *str, char *ostr, int olen)
return -1;
}
opts = strchr(str, ',');
if (opts) {
len = opts - str;
path = qemu_malloc(len+1);
snprintf(path, len+1, "%.*s", len, str);
} else
path = qemu_strdup(str);
memset(&un, 0, sizeof(un));
un.sun_family = AF_UNIX;
if (path && strlen(path)) {
@ -365,8 +357,8 @@ int unix_listen(const char *str, char *ostr, int olen)
* worst case possible is bind() failing, i.e. a DoS attack.
*/
fd = mkstemp(un.sun_path); close(fd);
qemu_opt_set(opts, "path", un.sun_path);
}
snprintf(ostr, olen, "%s%s", un.sun_path, opts ? opts : "");
unlink(un.sun_path);
if (bind(sock, (struct sockaddr*) &un, sizeof(un)) < 0) {
@ -380,11 +372,9 @@ int unix_listen(const char *str, char *ostr, int olen)
if (sockets_debug)
fprintf(stderr, "bind(unix:%s): OK\n", un.sun_path);
qemu_free(path);
return sock;
err:
qemu_free(path);
closesocket(sock);
return -1;
}
@ -420,6 +410,35 @@ int unix_connect_opts(QemuOpts *opts)
}
/* compatibility wrapper */
int unix_listen(const char *str, char *ostr, int olen)
{
QemuOpts *opts;
char *path, *optstr;
int sock, len;
opts = qemu_opts_create(&dummy_opts, NULL, 0);
optstr = strchr(str, ',');
if (optstr) {
len = optstr - str;
if (len) {
path = qemu_malloc(len+1);
snprintf(path, len+1, "%.*s", len, str);
qemu_opt_set(opts, "path", path);
qemu_free(path);
}
} else {
qemu_opt_set(opts, "path", str);
}
sock = unix_listen_opts(opts);
if (sock != -1 && ostr)
snprintf(ostr, olen, "%s%s", qemu_opt_get(opts, "path"), optstr ? optstr : "");
qemu_opts_del(opts);
return sock;
}
int unix_connect(const char *path)
{
QemuOpts *opts;

1
qemu_socket.h
View File

@ -40,6 +40,7 @@ int inet_listen(const char *str, char *ostr, int olen,
int socktype, int port_offset);
int inet_connect(const char *str, int socktype);
int unix_listen_opts(QemuOpts *opts);
int unix_listen(const char *path, char *ostr, int olen);
int unix_connect_opts(QemuOpts *opts);
int unix_connect(const char *path);