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tap: Permit incremental conversion of tap_open() to Error

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Convert the trivial ones immediately: tap-aix and tap-haiku.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1431691143-1015-11-git-send-email-armbru@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2015-05-15 13:58:58 +02:00 committed by Stefan Hajnoczi
parent ac4fcf5639
commit 468dd82408
7 changed files with 22 additions and 13 deletions
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4
net/tap-aix.c
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@ -26,9 +26,9 @@
#include <stdio.h>
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required)
int vnet_hdr_required, int mq_required, Error **errp)
{
fprintf(stderr, "no tap on AIX\n");
error_setg(errp, "no tap on AIX");
return -1;
}

6
net/tap-bsd.c
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@ -35,8 +35,9 @@
#ifndef __FreeBSD__
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required)
int vnet_hdr_required, int mq_required, Error **errp)
{
/* FIXME error_setg(errp, ...) on failure */
int fd;
#ifdef TAPGIFNAME
struct ifreq ifr;
@ -114,8 +115,9 @@ int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
#define PATH_NET_TAP "/dev/tap"
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required)
int vnet_hdr_required, int mq_required, Error **errp)
{
/* FIXME error_setg(errp, ...) on failure */
int fd, s, ret;
struct ifreq ifr;

4
net/tap-haiku.c
View File

@ -26,9 +26,9 @@
#include <stdio.h>
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required)
int vnet_hdr_required, int mq_required, Error **errp)
{
fprintf(stderr, "no tap on Haiku\n");
error_setg(errp, "no tap on Haiku");
return -1;
}

3
net/tap-linux.c
View File

@ -37,8 +37,9 @@
#define PATH_NET_TUN "/dev/net/tun"
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required)
int vnet_hdr_required, int mq_required, Error **errp)
{
/* FIXME error_setg(errp, ...) on failure */
struct ifreq ifr;
int fd, ret;
int len = sizeof(struct virtio_net_hdr);

3
net/tap-solaris.c
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@ -174,8 +174,9 @@ static int tap_alloc(char *dev, size_t dev_size)
}
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required)
int vnet_hdr_required, int mq_required, Error **errp)
{
/* FIXME error_setg(errp, ...) on failure */
char dev[10]="";
int fd;
if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){

13
net/tap.c
View File

@ -581,7 +581,7 @@ int net_init_bridge(const NetClientOptions *opts, const char *name,
static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr,
const char *setup_script, char *ifname,
size_t ifname_sz, int mq_required)
size_t ifname_sz, int mq_required, Error **errp)
{
Error *err = NULL;
int fd, vnet_hdr_required;
@ -595,8 +595,12 @@ static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr,
}
TFR(fd = tap_open(ifname, ifname_sz, vnet_hdr, vnet_hdr_required,
mq_required));
mq_required, errp));
if (fd < 0) {
/* FIXME drop when all tap_open() store an Error */
if (errp && !*errp) {
error_setg(errp, "can't open tap device");
}
return -1;
}
@ -605,7 +609,7 @@ static int net_tap_init(const NetdevTapOptions *tap, int *vnet_hdr,
strcmp(setup_script, "no") != 0) {
launch_script(setup_script, ifname, fd, &err);
if (err) {
error_report_err(err);
error_propagate(errp, err);
close(fd);
return -1;
}
@ -853,8 +857,9 @@ int net_init_tap(const NetClientOptions *opts, const char *name,
for (i = 0; i < queues; i++) {
fd = net_tap_init(tap, &vnet_hdr, i >= 1 ? "no" : script,
ifname, sizeof ifname, queues > 1);
ifname, sizeof ifname, queues > 1, &err);
if (fd == -1) {
error_report_err(err);
return -1;
}

2
net/tap_int.h
View File

@ -30,7 +30,7 @@
#include "qapi-types.h"
int tap_open(char *ifname, int ifname_size, int *vnet_hdr,
int vnet_hdr_required, int mq_required);
int vnet_hdr_required, int mq_required, Error **errp);
ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen);