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-rw-r--r--net/slirp.c752
1 files changed, 752 insertions, 0 deletions
diff --git a/net/slirp.c b/net/slirp.c
new file mode 100644
index 0000000000..d6d57721dd
--- /dev/null
+++ b/net/slirp.c
@@ -0,0 +1,752 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "net/slirp.h"
+
+#include "config-host.h"
+
+#include "net.h"
+#include "monitor.h"
+#include "sysemu.h"
+#include "qemu_socket.h"
+#include "slirp/libslirp.h"
+
+static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
+{
+ const char *p, *p1;
+ int len;
+ p = *pp;
+ p1 = strchr(p, sep);
+ if (!p1)
+ return -1;
+ len = p1 - p;
+ p1++;
+ if (buf_size > 0) {
+ if (len > buf_size - 1)
+ len = buf_size - 1;
+ memcpy(buf, p, len);
+ buf[len] = '\0';
+ }
+ *pp = p1;
+ return 0;
+}
+
+/* slirp network adapter */
+
+#define SLIRP_CFG_HOSTFWD 1
+#define SLIRP_CFG_LEGACY 2
+
+struct slirp_config_str {
+ struct slirp_config_str *next;
+ int flags;
+ char str[1024];
+ int legacy_format;
+};
+
+typedef struct SlirpState {
+ QTAILQ_ENTRY(SlirpState) entry;
+ VLANClientState *vc;
+ Slirp *slirp;
+#ifndef _WIN32
+ char smb_dir[128];
+#endif
+} SlirpState;
+
+static struct slirp_config_str *slirp_configs;
+const char *legacy_tftp_prefix;
+const char *legacy_bootp_filename;
+static QTAILQ_HEAD(slirp_stacks, SlirpState) slirp_stacks =
+ QTAILQ_HEAD_INITIALIZER(slirp_stacks);
+
+static int slirp_hostfwd(SlirpState *s, const char *redir_str,
+ int legacy_format);
+static int slirp_guestfwd(SlirpState *s, const char *config_str,
+ int legacy_format);
+
+#ifndef _WIN32
+static const char *legacy_smb_export;
+
+static int slirp_smb(SlirpState *s, const char *exported_dir,
+ struct in_addr vserver_addr);
+static void slirp_smb_cleanup(SlirpState *s);
+#else
+static inline void slirp_smb_cleanup(SlirpState *s) { }
+#endif
+
+int slirp_can_output(void *opaque)
+{
+ SlirpState *s = opaque;
+
+ return qemu_can_send_packet(s->vc);
+}
+
+void slirp_output(void *opaque, const uint8_t *pkt, int pkt_len)
+{
+ SlirpState *s = opaque;
+
+ qemu_send_packet(s->vc, pkt, pkt_len);
+}
+
+static ssize_t slirp_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
+{
+ SlirpState *s = vc->opaque;
+
+ slirp_input(s->slirp, buf, size);
+
+ return size;
+}
+
+static void net_slirp_cleanup(VLANClientState *vc)
+{
+ SlirpState *s = vc->opaque;
+
+ slirp_cleanup(s->slirp);
+ slirp_smb_cleanup(s);
+ QTAILQ_REMOVE(&slirp_stacks, s, entry);
+ qemu_free(s);
+}
+
+static int net_slirp_init(VLANState *vlan, const char *model,
+ const char *name, int restricted,
+ const char *vnetwork, const char *vhost,
+ const char *vhostname, const char *tftp_export,
+ const char *bootfile, const char *vdhcp_start,
+ const char *vnameserver, const char *smb_export,
+ const char *vsmbserver)
+{
+ /* default settings according to historic slirp */
+ struct in_addr net = { .s_addr = htonl(0x0a000200) }; /* 10.0.2.0 */
+ struct in_addr mask = { .s_addr = htonl(0xffffff00) }; /* 255.255.255.0 */
+ struct in_addr host = { .s_addr = htonl(0x0a000202) }; /* 10.0.2.2 */
+ struct in_addr dhcp = { .s_addr = htonl(0x0a00020f) }; /* 10.0.2.15 */
+ struct in_addr dns = { .s_addr = htonl(0x0a000203) }; /* 10.0.2.3 */
+#ifndef _WIN32
+ struct in_addr smbsrv = { .s_addr = 0 };
+#endif
+ SlirpState *s;
+ char buf[20];
+ uint32_t addr;
+ int shift;
+ char *end;
+ struct slirp_config_str *config;
+
+ if (!tftp_export) {
+ tftp_export = legacy_tftp_prefix;
+ }
+ if (!bootfile) {
+ bootfile = legacy_bootp_filename;
+ }
+
+ if (vnetwork) {
+ if (get_str_sep(buf, sizeof(buf), &vnetwork, '/') < 0) {
+ if (!inet_aton(vnetwork, &net)) {
+ return -1;
+ }
+ addr = ntohl(net.s_addr);
+ if (!(addr & 0x80000000)) {
+ mask.s_addr = htonl(0xff000000); /* class A */
+ } else if ((addr & 0xfff00000) == 0xac100000) {
+ mask.s_addr = htonl(0xfff00000); /* priv. 172.16.0.0/12 */
+ } else if ((addr & 0xc0000000) == 0x80000000) {
+ mask.s_addr = htonl(0xffff0000); /* class B */
+ } else if ((addr & 0xffff0000) == 0xc0a80000) {
+ mask.s_addr = htonl(0xffff0000); /* priv. 192.168.0.0/16 */
+ } else if ((addr & 0xffff0000) == 0xc6120000) {
+ mask.s_addr = htonl(0xfffe0000); /* tests 198.18.0.0/15 */
+ } else if ((addr & 0xe0000000) == 0xe0000000) {
+ mask.s_addr = htonl(0xffffff00); /* class C */
+ } else {
+ mask.s_addr = htonl(0xfffffff0); /* multicast/reserved */
+ }
+ } else {
+ if (!inet_aton(buf, &net)) {
+ return -1;
+ }
+ shift = strtol(vnetwork, &end, 10);
+ if (*end != '\0') {
+ if (!inet_aton(vnetwork, &mask)) {
+ return -1;
+ }
+ } else if (shift < 4 || shift > 32) {
+ return -1;
+ } else {
+ mask.s_addr = htonl(0xffffffff << (32 - shift));
+ }
+ }
+ net.s_addr &= mask.s_addr;
+ host.s_addr = net.s_addr | (htonl(0x0202) & ~mask.s_addr);
+ dhcp.s_addr = net.s_addr | (htonl(0x020f) & ~mask.s_addr);
+ dns.s_addr = net.s_addr | (htonl(0x0203) & ~mask.s_addr);
+ }
+
+ if (vhost && !inet_aton(vhost, &host)) {
+ return -1;
+ }
+ if ((host.s_addr & mask.s_addr) != net.s_addr) {
+ return -1;
+ }
+
+ if (vdhcp_start && !inet_aton(vdhcp_start, &dhcp)) {
+ return -1;
+ }
+ if ((dhcp.s_addr & mask.s_addr) != net.s_addr ||
+ dhcp.s_addr == host.s_addr || dhcp.s_addr == dns.s_addr) {
+ return -1;
+ }
+
+ if (vnameserver && !inet_aton(vnameserver, &dns)) {
+ return -1;
+ }
+ if ((dns.s_addr & mask.s_addr) != net.s_addr ||
+ dns.s_addr == host.s_addr) {
+ return -1;
+ }
+
+#ifndef _WIN32
+ if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
+ return -1;
+ }
+#endif
+
+ s = qemu_mallocz(sizeof(SlirpState));
+ s->slirp = slirp_init(restricted, net, mask, host, vhostname,
+ tftp_export, bootfile, dhcp, dns, s);
+ QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry);
+
+ for (config = slirp_configs; config; config = config->next) {
+ if (config->flags & SLIRP_CFG_HOSTFWD) {
+ if (slirp_hostfwd(s, config->str,
+ config->flags & SLIRP_CFG_LEGACY) < 0)
+ return -1;
+ } else {
+ if (slirp_guestfwd(s, config->str,
+ config->flags & SLIRP_CFG_LEGACY) < 0)
+ return -1;
+ }
+ }
+#ifndef _WIN32
+ if (!smb_export) {
+ smb_export = legacy_smb_export;
+ }
+ if (smb_export) {
+ if (slirp_smb(s, smb_export, smbsrv) < 0)
+ return -1;
+ }
+#endif
+
+ s->vc = qemu_new_vlan_client(NET_CLIENT_TYPE_SLIRP,
+ vlan, NULL, model, name, NULL,
+ slirp_receive, NULL, NULL,
+ net_slirp_cleanup, s);
+ snprintf(s->vc->info_str, sizeof(s->vc->info_str),
+ "net=%s, restricted=%c", inet_ntoa(net), restricted ? 'y' : 'n');
+ return 0;
+}
+
+static SlirpState *slirp_lookup(Monitor *mon, const char *vlan,
+ const char *stack)
+{
+ VLANClientState *vc;
+
+ if (vlan) {
+ vc = qemu_find_vlan_client_by_name(mon, strtol(vlan, NULL, 0), stack);
+ if (!vc) {
+ return NULL;
+ }
+ if (strcmp(vc->model, "user")) {
+ monitor_printf(mon, "invalid device specified\n");
+ return NULL;
+ }
+ return vc->opaque;
+ } else {
+ if (QTAILQ_EMPTY(&slirp_stacks)) {
+ monitor_printf(mon, "user mode network stack not in use\n");
+ return NULL;
+ }
+ return QTAILQ_FIRST(&slirp_stacks);
+ }
+}
+
+void net_slirp_hostfwd_remove(Monitor *mon, const QDict *qdict)
+{
+ struct in_addr host_addr = { .s_addr = INADDR_ANY };
+ int host_port;
+ char buf[256] = "";
+ const char *src_str, *p;
+ SlirpState *s;
+ int is_udp = 0;
+ int err;
+ const char *arg1 = qdict_get_str(qdict, "arg1");
+ const char *arg2 = qdict_get_try_str(qdict, "arg2");
+ const char *arg3 = qdict_get_try_str(qdict, "arg3");
+
+ if (arg2) {
+ s = slirp_lookup(mon, arg1, arg2);
+ src_str = arg3;
+ } else {
+ s = slirp_lookup(mon, NULL, NULL);
+ src_str = arg1;
+ }
+ if (!s) {
+ return;
+ }
+
+ if (!src_str || !src_str[0])
+ goto fail_syntax;
+
+ p = src_str;
+ get_str_sep(buf, sizeof(buf), &p, ':');
+
+ if (!strcmp(buf, "tcp") || buf[0] == '\0') {
+ is_udp = 0;
+ } else if (!strcmp(buf, "udp")) {
+ is_udp = 1;
+ } else {
+ goto fail_syntax;
+ }
+
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
+ goto fail_syntax;
+ }
+
+ host_port = atoi(p);
+
+ err = slirp_remove_hostfwd(QTAILQ_FIRST(&slirp_stacks)->slirp, is_udp,
+ host_addr, host_port);
+
+ monitor_printf(mon, "host forwarding rule for %s %s\n", src_str,
+ err ? "removed" : "not found");
+ return;
+
+ fail_syntax:
+ monitor_printf(mon, "invalid format\n");
+}
+
+static int slirp_hostfwd(SlirpState *s, const char *redir_str,
+ int legacy_format)
+{
+ struct in_addr host_addr = { .s_addr = INADDR_ANY };
+ struct in_addr guest_addr = { .s_addr = 0 };
+ int host_port, guest_port;
+ const char *p;
+ char buf[256];
+ int is_udp;
+ char *end;
+
+ p = redir_str;
+ if (!p || get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ if (!strcmp(buf, "tcp") || buf[0] == '\0') {
+ is_udp = 0;
+ } else if (!strcmp(buf, "udp")) {
+ is_udp = 1;
+ } else {
+ goto fail_syntax;
+ }
+
+ if (!legacy_format) {
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ if (buf[0] != '\0' && !inet_aton(buf, &host_addr)) {
+ goto fail_syntax;
+ }
+ }
+
+ if (get_str_sep(buf, sizeof(buf), &p, legacy_format ? ':' : '-') < 0) {
+ goto fail_syntax;
+ }
+ host_port = strtol(buf, &end, 0);
+ if (*end != '\0' || host_port < 1 || host_port > 65535) {
+ goto fail_syntax;
+ }
+
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ if (buf[0] != '\0' && !inet_aton(buf, &guest_addr)) {
+ goto fail_syntax;
+ }
+
+ guest_port = strtol(p, &end, 0);
+ if (*end != '\0' || guest_port < 1 || guest_port > 65535) {
+ goto fail_syntax;
+ }
+
+ if (slirp_add_hostfwd(s->slirp, is_udp, host_addr, host_port, guest_addr,
+ guest_port) < 0) {
+ qemu_error("could not set up host forwarding rule '%s'\n",
+ redir_str);
+ return -1;
+ }
+ return 0;
+
+ fail_syntax:
+ qemu_error("invalid host forwarding rule '%s'\n", redir_str);
+ return -1;
+}
+
+void net_slirp_hostfwd_add(Monitor *mon, const QDict *qdict)
+{
+ const char *redir_str;
+ SlirpState *s;
+ const char *arg1 = qdict_get_str(qdict, "arg1");
+ const char *arg2 = qdict_get_try_str(qdict, "arg2");
+ const char *arg3 = qdict_get_try_str(qdict, "arg3");
+
+ if (arg2) {
+ s = slirp_lookup(mon, arg1, arg2);
+ redir_str = arg3;
+ } else {
+ s = slirp_lookup(mon, NULL, NULL);
+ redir_str = arg1;
+ }
+ if (s) {
+ slirp_hostfwd(s, redir_str, 0);
+ }
+
+}
+
+int net_slirp_redir(const char *redir_str)
+{
+ struct slirp_config_str *config;
+
+ if (QTAILQ_EMPTY(&slirp_stacks)) {
+ config = qemu_malloc(sizeof(*config));
+ pstrcpy(config->str, sizeof(config->str), redir_str);
+ config->flags = SLIRP_CFG_HOSTFWD | SLIRP_CFG_LEGACY;
+ config->next = slirp_configs;
+ slirp_configs = config;
+ return 0;
+ }
+
+ return slirp_hostfwd(QTAILQ_FIRST(&slirp_stacks), redir_str, 1);
+}
+
+#ifndef _WIN32
+
+/* automatic user mode samba server configuration */
+static void slirp_smb_cleanup(SlirpState *s)
+{
+ char cmd[128];
+
+ if (s->smb_dir[0] != '\0') {
+ snprintf(cmd, sizeof(cmd), "rm -rf %s", s->smb_dir);
+ system(cmd);
+ s->smb_dir[0] = '\0';
+ }
+}
+
+static int slirp_smb(SlirpState* s, const char *exported_dir,
+ struct in_addr vserver_addr)
+{
+ static int instance;
+ char smb_conf[128];
+ char smb_cmdline[128];
+ FILE *f;
+
+ snprintf(s->smb_dir, sizeof(s->smb_dir), "/tmp/qemu-smb.%ld-%d",
+ (long)getpid(), instance++);
+ if (mkdir(s->smb_dir, 0700) < 0) {
+ qemu_error("could not create samba server dir '%s'\n", s->smb_dir);
+ return -1;
+ }
+ snprintf(smb_conf, sizeof(smb_conf), "%s/%s", s->smb_dir, "smb.conf");
+
+ f = fopen(smb_conf, "w");
+ if (!f) {
+ slirp_smb_cleanup(s);
+ qemu_error("could not create samba server configuration file '%s'\n",
+ smb_conf);
+ return -1;
+ }
+ fprintf(f,
+ "[global]\n"
+ "private dir=%s\n"
+ "smb ports=0\n"
+ "socket address=127.0.0.1\n"
+ "pid directory=%s\n"
+ "lock directory=%s\n"
+ "log file=%s/log.smbd\n"
+ "smb passwd file=%s/smbpasswd\n"
+ "security = share\n"
+ "[qemu]\n"
+ "path=%s\n"
+ "read only=no\n"
+ "guest ok=yes\n",
+ s->smb_dir,
+ s->smb_dir,
+ s->smb_dir,
+ s->smb_dir,
+ s->smb_dir,
+ exported_dir
+ );
+ fclose(f);
+
+ snprintf(smb_cmdline, sizeof(smb_cmdline), "%s -s %s",
+ SMBD_COMMAND, smb_conf);
+
+ if (slirp_add_exec(s->slirp, 0, smb_cmdline, &vserver_addr, 139) < 0) {
+ slirp_smb_cleanup(s);
+ qemu_error("conflicting/invalid smbserver address\n");
+ return -1;
+ }
+ return 0;
+}
+
+/* automatic user mode samba server configuration (legacy interface) */
+int net_slirp_smb(const char *exported_dir)
+{
+ struct in_addr vserver_addr = { .s_addr = 0 };
+
+ if (legacy_smb_export) {
+ fprintf(stderr, "-smb given twice\n");
+ return -1;
+ }
+ legacy_smb_export = exported_dir;
+ if (!QTAILQ_EMPTY(&slirp_stacks)) {
+ return slirp_smb(QTAILQ_FIRST(&slirp_stacks), exported_dir,
+ vserver_addr);
+ }
+ return 0;
+}
+
+#endif /* !defined(_WIN32) */
+
+struct GuestFwd {
+ CharDriverState *hd;
+ struct in_addr server;
+ int port;
+ Slirp *slirp;
+};
+
+static int guestfwd_can_read(void *opaque)
+{
+ struct GuestFwd *fwd = opaque;
+ return slirp_socket_can_recv(fwd->slirp, fwd->server, fwd->port);
+}
+
+static void guestfwd_read(void *opaque, const uint8_t *buf, int size)
+{
+ struct GuestFwd *fwd = opaque;
+ slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size);
+}
+
+static int slirp_guestfwd(SlirpState *s, const char *config_str,
+ int legacy_format)
+{
+ struct in_addr server = { .s_addr = 0 };
+ struct GuestFwd *fwd;
+ const char *p;
+ char buf[128];
+ char *end;
+ int port;
+
+ p = config_str;
+ if (legacy_format) {
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ } else {
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ if (strcmp(buf, "tcp") && buf[0] != '\0') {
+ goto fail_syntax;
+ }
+ if (get_str_sep(buf, sizeof(buf), &p, ':') < 0) {
+ goto fail_syntax;
+ }
+ if (buf[0] != '\0' && !inet_aton(buf, &server)) {
+ goto fail_syntax;
+ }
+ if (get_str_sep(buf, sizeof(buf), &p, '-') < 0) {
+ goto fail_syntax;
+ }
+ }
+ port = strtol(buf, &end, 10);
+ if (*end != '\0' || port < 1 || port > 65535) {
+ goto fail_syntax;
+ }
+
+ fwd = qemu_malloc(sizeof(struct GuestFwd));
+ snprintf(buf, sizeof(buf), "guestfwd.tcp:%d", port);
+ fwd->hd = qemu_chr_open(buf, p, NULL);
+ if (!fwd->hd) {
+ qemu_error("could not open guest forwarding device '%s'\n", buf);
+ qemu_free(fwd);
+ return -1;
+ }
+
+ if (slirp_add_exec(s->slirp, 3, fwd->hd, &server, port) < 0) {
+ qemu_error("conflicting/invalid host:port in guest forwarding "
+ "rule '%s'\n", config_str);
+ qemu_free(fwd);
+ return -1;
+ }
+ fwd->server = server;
+ fwd->port = port;
+ fwd->slirp = s->slirp;
+
+ qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read,
+ NULL, fwd);
+ return 0;
+
+ fail_syntax:
+ qemu_error("invalid guest forwarding rule '%s'\n", config_str);
+ return -1;
+}
+
+void do_info_usernet(Monitor *mon)
+{
+ SlirpState *s;
+
+ QTAILQ_FOREACH(s, &slirp_stacks, entry) {
+ monitor_printf(mon, "VLAN %d (%s):\n", s->vc->vlan->id, s->vc->name);
+ slirp_connection_info(s->slirp, mon);
+ }
+}
+
+static int net_init_slirp_configs(const char *name, const char *value, void *opaque)
+{
+ struct slirp_config_str *config;
+
+ if (strcmp(name, "hostfwd") != 0 && strcmp(name, "guestfwd") != 0) {
+ return 0;
+ }
+
+ config = qemu_mallocz(sizeof(*config));
+
+ pstrcpy(config->str, sizeof(config->str), value);
+
+ if (!strcmp(name, "hostfwd")) {
+ config->flags = SLIRP_CFG_HOSTFWD;
+ }
+
+ config->next = slirp_configs;
+ slirp_configs = config;
+
+ return 0;
+}
+
+int net_init_slirp(QemuOpts *opts,
+ Monitor *mon,
+ const char *name,
+ VLANState *vlan)
+{
+ struct slirp_config_str *config;
+ const char *vhost;
+ const char *vhostname;
+ const char *vdhcp_start;
+ const char *vnamesrv;
+ const char *tftp_export;
+ const char *bootfile;
+ const char *smb_export;
+ const char *vsmbsrv;
+ char *vnet = NULL;
+ int restricted = 0;
+ int ret;
+
+ vhost = qemu_opt_get(opts, "host");
+ vhostname = qemu_opt_get(opts, "hostname");
+ vdhcp_start = qemu_opt_get(opts, "dhcpstart");
+ vnamesrv = qemu_opt_get(opts, "dns");
+ tftp_export = qemu_opt_get(opts, "tftp");
+ bootfile = qemu_opt_get(opts, "bootfile");
+ smb_export = qemu_opt_get(opts, "smb");
+ vsmbsrv = qemu_opt_get(opts, "smbserver");
+
+ if (qemu_opt_get(opts, "ip")) {
+ const char *ip = qemu_opt_get(opts, "ip");
+ int l = strlen(ip) + strlen("/24") + 1;
+
+ vnet = qemu_malloc(l);
+
+ /* emulate legacy ip= parameter */
+ pstrcpy(vnet, l, ip);
+ pstrcat(vnet, l, "/24");
+ }
+
+ if (qemu_opt_get(opts, "net")) {
+ if (vnet) {
+ qemu_free(vnet);
+ }
+ vnet = qemu_strdup(qemu_opt_get(opts, "net"));
+ }
+
+ if (qemu_opt_get(opts, "restrict") &&
+ qemu_opt_get(opts, "restrict")[0] == 'y') {
+ restricted = 1;
+ }
+
+ qemu_opt_foreach(opts, net_init_slirp_configs, NULL, 0);
+
+ ret = net_slirp_init(vlan, "user", name, restricted, vnet, vhost,
+ vhostname, tftp_export, bootfile, vdhcp_start,
+ vnamesrv, smb_export, vsmbsrv);
+
+ while (slirp_configs) {
+ config = slirp_configs;
+ slirp_configs = config->next;
+ qemu_free(config);
+ }
+
+ if (ret != -1 && vlan) {
+ vlan->nb_host_devs++;
+ }
+
+ qemu_free(vnet);
+
+ return ret;
+}
+
+int net_slirp_parse_legacy(QemuOptsList *opts_list, const char *optarg, int *ret)
+{
+ if (strcmp(opts_list->name, "net") != 0 ||
+ strncmp(optarg, "channel,", strlen("channel,")) != 0) {
+ return 0;
+ }
+
+ /* handle legacy -net channel,port:chr */
+ optarg += strlen("channel,");
+
+ if (QTAILQ_EMPTY(&slirp_stacks)) {
+ struct slirp_config_str *config;
+
+ config = qemu_malloc(sizeof(*config));
+ pstrcpy(config->str, sizeof(config->str), optarg);
+ config->flags = SLIRP_CFG_LEGACY;
+ config->next = slirp_configs;
+ slirp_configs = config;
+ *ret = 0;
+ } else {
+ *ret = slirp_guestfwd(QTAILQ_FIRST(&slirp_stacks), optarg, 1);
+ }
+
+ return 1;
+}
+
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-11 20:38:17 +0000