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[Qemu-devel] [PATCH 2/2] net: store guest timestamp in dump file instead
From: |
Hervé Poussineau |
Subject: |
[Qemu-devel] [PATCH 2/2] net: store guest timestamp in dump file instead of time since guest startup |
Date: |
Wed, 30 Nov 2011 21:35:38 +0100 |
Stored dates are no more 1970-01-01 (+ run time), but have a real meaning.
If someone wants to have comparable timestamps accross boots, it is
possible to start qemu with -rtc to give the startup date.
Signed-off-by: Hervé Poussineau <address@hidden>
---
net/dump.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/net/dump.c b/net/dump.c
index 8132411..4b48d48 100644
--- a/net/dump.c
+++ b/net/dump.c
@@ -30,6 +30,7 @@
typedef struct DumpState {
VLANClientState nc;
+ int64_t start_ts;
int fd;
int pcap_caplen;
} DumpState;
@@ -70,7 +71,7 @@ static ssize_t dump_receive(VLANClientState *nc, const
uint8_t *buf, size_t size
ts = muldiv64(qemu_get_clock_ns(vm_clock), 1000000, get_ticks_per_sec());
caplen = size > s->pcap_caplen ? s->pcap_caplen : size;
- hdr.ts.tv_sec = ts / 1000000;
+ hdr.ts.tv_sec = ts / 1000000 + s->start_ts;
hdr.ts.tv_usec = ts % 1000000;
hdr.caplen = caplen;
hdr.len = size;
@@ -104,6 +105,7 @@ static int net_dump_init(VLANState *vlan, const char
*device,
struct pcap_file_hdr hdr;
VLANClientState *nc;
DumpState *s;
+ struct tm tm;
int fd;
fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY | O_BINARY, 0644);
@@ -136,6 +138,9 @@ static int net_dump_init(VLANState *vlan, const char
*device,
s->fd = fd;
s->pcap_caplen = len;
+ qemu_get_timedate(&tm, 0);
+ s->start_ts = mktime(&tm);
+
return 0;
}
--
1.7.6.3