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net: relocate paths to helpers and scripts

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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-08-18 11:56:16 +02:00
parent 1b93406481
commit 63c4db4c2e
2 changed files with 21 additions and 9 deletions
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4
include/net/net.h
View file

@ -209,8 +209,8 @@ void netdev_add(QemuOpts *opts, Error **errp);
int net_hub_id_for_client(NetClientState *nc, int *id);
NetClientState *net_hub_port_find(int hub_id);
#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
#define DEFAULT_NETWORK_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifup"
#define DEFAULT_NETWORK_DOWN_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifdown"
#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
#define DEFAULT_BRIDGE_INTERFACE "br0"

26
net/tap.c
View file

@ -478,6 +478,7 @@ static int net_bridge_run_helper(const char *helper, const char *bridge,
Error **errp)
{
sigset_t oldmask, mask;
g_autofree char *default_helper = NULL;
int pid, status;
char *args[5];
char **parg;
@ -487,6 +488,10 @@ static int net_bridge_run_helper(const char *helper, const char *bridge,
sigaddset(&mask, SIGCHLD);
sigprocmask(SIG_BLOCK, &mask, &oldmask);
if (!helper) {
helper = default_helper = get_relocated_path(DEFAULT_BRIDGE_HELPER);
}
if (socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) {
error_setg_errno(errp, errno, "socketpair() failed");
return -1;
@ -588,8 +593,7 @@ int net_init_bridge(const Netdev *netdev, const char *name,
assert(netdev->type == NET_CLIENT_DRIVER_BRIDGE);
bridge = &netdev->u.bridge;
helper = bridge->has_helper ? bridge->helper : DEFAULT_BRIDGE_HELPER;
helper = bridge->has_helper ? bridge->helper : NULL;
br = bridge->has_br ? bridge->br : DEFAULT_BRIDGE_INTERFACE;
fd = net_bridge_run_helper(helper, br, errp);
@ -773,8 +777,8 @@ int net_init_tap(const Netdev *netdev, const char *name,
const NetdevTapOptions *tap;
int fd, vnet_hdr = 0, i = 0, queues;
/* for the no-fd, no-helper case */
const char *script = NULL; /* suppress wrong "uninit'd use" gcc warning */
const char *downscript = NULL;
const char *script;
const char *downscript;
Error *err = NULL;
const char *vhostfdname;
char ifname[128];
@ -784,6 +788,8 @@ int net_init_tap(const Netdev *netdev, const char *name,
tap = &netdev->u.tap;
queues = tap->has_queues ? tap->queues : 1;
vhostfdname = tap->has_vhostfd ? tap->vhostfd : NULL;
script = tap->has_script ? tap->script : NULL;
downscript = tap->has_downscript ? tap->downscript : NULL;
/* QEMU hubs do not support multiqueue tap, in this case peer is set.
* For -netdev, peer is always NULL. */
@ -934,13 +940,19 @@ free_fail:
return -1;
}
} else {
g_autofree char *default_script = NULL;
g_autofree char *default_downscript = NULL;
if (tap->has_vhostfds) {
error_setg(errp, "vhostfds= is invalid if fds= wasn't specified");
return -1;
}
script = tap->has_script ? tap->script : DEFAULT_NETWORK_SCRIPT;
downscript = tap->has_downscript ? tap->downscript :
DEFAULT_NETWORK_DOWN_SCRIPT;
if (!script) {
script = default_script = get_relocated_path(DEFAULT_NETWORK_SCRIPT);
}
if (!downscript) {
downscript = default_downscript = get_relocated_path(DEFAULT_NETWORK_SCRIPT);
}
if (tap->has_ifname) {
pstrcpy(ifname, sizeof ifname, tap->ifname);