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authorQiao Nuohan <qiaonuohan@cn.fujitsu.com>2014-04-17 16:15:07 +0800
committerLuiz Capitulino <lcapitulino@redhat.com>2014-04-25 11:18:33 -0400
commit1b7a0f758bb3e49c8468fd2af75ebb215b26e6f4 (patch)
treef96d2007c6270575c7c254d5ebccd588888148ec /hmp.c
parentc20499d9854e5d04710f17d577df65ed7c7aacf1 (diff)
downloadqemu-arm-1b7a0f758bb3e49c8468fd2af75ebb215b26e6f4.tar.gz
HMP: support specifying dump format for dump-guest-memory
Dumping guest memory is available to specify the dump format now. This patch adds options '-z|-l|-s' to HMP command dump-guest-memory to specify dumping in kdump-compression format, with zlib/lzo/snappy compression. And without these options ELF format will be used. The discussion about this feature is here: http://lists.nongnu.org/archive/html/qemu-devel/2014-03/msg04235.html Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com> Suggested-by: Christian Borntraeger <borntraeger@de.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> (on s390x/kvm) Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Diffstat (limited to 'hmp.c')
-rw-r--r--hmp.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/hmp.c b/hmp.c
index 2f279c4ff2..ca869bafa8 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1308,16 +1308,35 @@ void hmp_dump_guest_memory(Monitor *mon, const QDict *qdict)
{
Error *errp = NULL;
int paging = qdict_get_try_bool(qdict, "paging", 0);
+ int zlib = qdict_get_try_bool(qdict, "zlib", 0);
+ int lzo = qdict_get_try_bool(qdict, "lzo", 0);
+ int snappy = qdict_get_try_bool(qdict, "snappy", 0);
const char *file = qdict_get_str(qdict, "filename");
bool has_begin = qdict_haskey(qdict, "begin");
bool has_length = qdict_haskey(qdict, "length");
- /* kdump-compressed format is not supported for HMP */
- bool has_format = false;
int64_t begin = 0;
int64_t length = 0;
enum DumpGuestMemoryFormat dump_format = DUMP_GUEST_MEMORY_FORMAT_ELF;
char *prot;
+ if (zlib + lzo + snappy > 1) {
+ error_setg(&errp, "only one of '-z|-l|-s' can be set");
+ hmp_handle_error(mon, &errp);
+ return;
+ }
+
+ if (zlib) {
+ dump_format = DUMP_GUEST_MEMORY_FORMAT_KDUMP_ZLIB;
+ }
+
+ if (lzo) {
+ dump_format = DUMP_GUEST_MEMORY_FORMAT_KDUMP_LZO;
+ }
+
+ if (snappy) {
+ dump_format = DUMP_GUEST_MEMORY_FORMAT_KDUMP_SNAPPY;
+ }
+
if (has_begin) {
begin = qdict_get_int(qdict, "begin");
}
@@ -1328,7 +1347,7 @@ void hmp_dump_guest_memory(Monitor *mon, const QDict *qdict)
prot = g_strconcat("file:", file, NULL);
qmp_dump_guest_memory(paging, prot, has_begin, begin, has_length, length,
- has_format, dump_format, &errp);
+ true, dump_format, &errp);
hmp_handle_error(mon, &errp);
g_free(prot);
}