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net: convert dump to NetClientInfo

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aliguori: fix uninitialized use of pcap_len

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Mark McLoughlin 2009-11-25 18:49:09 +00:00 committed by Anthony Liguori
parent 564f63e3fc
commit 731d5856cb
1 changed files with 28 additions and 21 deletions
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49
net/dump.c
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@ -28,7 +28,7 @@
#include "qemu-log.h"
typedef struct DumpState {
VLANClientState *pcap_vc;
VLANClientState nc;
int fd;
int pcap_caplen;
} DumpState;
@ -54,9 +54,9 @@ struct pcap_sf_pkthdr {
uint32_t len;
};
static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size)
static ssize_t dump_receive(VLANClientState *nc, const uint8_t *buf, size_t size)
{
DumpState *s = vc->opaque;
DumpState *s = DO_UPCAST(DumpState, nc, nc);
struct pcap_sf_pkthdr hdr;
int64_t ts;
int caplen;
@ -83,51 +83,58 @@ static ssize_t dump_receive(VLANClientState *vc, const uint8_t *buf, size_t size
return size;
}
static void net_dump_cleanup(VLANClientState *vc)
static void dump_cleanup(VLANClientState *nc)
{
DumpState *s = vc->opaque;
DumpState *s = DO_UPCAST(DumpState, nc, nc);
close(s->fd);
qemu_free(s);
}
static NetClientInfo net_dump_info = {
.type = NET_CLIENT_TYPE_DUMP,
.size = sizeof(DumpState),
.receive = dump_receive,
.cleanup = dump_cleanup,
};
static int net_dump_init(VLANState *vlan, const char *device,
const char *name, const char *filename, int len)
{
struct pcap_file_hdr hdr;
VLANClientState *nc;
DumpState *s;
int fd;
s = qemu_malloc(sizeof(DumpState));
s->fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
if (s->fd < 0) {
fd = open(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
if (fd < 0) {
qemu_error("-net dump: can't open %s\n", filename);
return -1;
}
s->pcap_caplen = len;
hdr.magic = PCAP_MAGIC;
hdr.version_major = 2;
hdr.version_minor = 4;
hdr.thiszone = 0;
hdr.sigfigs = 0;
hdr.snaplen = s->pcap_caplen;
hdr.snaplen = len;
hdr.linktype = 1;
if (write(s->fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
if (write(fd, &hdr, sizeof(hdr)) < sizeof(hdr)) {
qemu_error("-net dump write error: %s\n", strerror(errno));
close(s->fd);
qemu_free(s);
close(fd);
return -1;
}
s->pcap_vc = qemu_new_vlan_client(NET_CLIENT_TYPE_DUMP,
vlan, NULL, device, name, NULL,
dump_receive, NULL, NULL,
net_dump_cleanup, s);
snprintf(s->pcap_vc->info_str, sizeof(s->pcap_vc->info_str),
nc = qemu_new_net_client(&net_dump_info, vlan, NULL, device, name);
snprintf(nc->info_str, sizeof(nc->info_str),
"dump to %s (len=%d)", filename, len);
s = DO_UPCAST(DumpState, nc, nc);
s->fd = fd;
s->pcap_caplen = len;
return 0;
}