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authorqiaonuohan <qiaonuohan@cn.fujitsu.com>2014-02-18 14:11:36 +0800
committerLuiz Capitulino <lcapitulino@redhat.com>2014-02-28 11:52:03 -0500
commitb53ccc30c40df52d192e469a86c188a8649c6df3 (patch)
tree65dc01ecc94511c31e184b65dd30280345573659 /hmp.c
parentd12f57ec6640d36e380367a0ab6ab9f3f29b6d51 (diff)
downloadqemu-arm-b53ccc30c40df52d192e469a86c188a8649c6df3.tar.gz
dump: make kdump-compressed format available for 'dump-guest-memory'
Make monitor command 'dump-guest-memory' be able to dump in kdump-compressed format. The command's usage: dump [-p] protocol [begin] [length] [format] 'format' is used to specified the format of vmcore and can be: 1. 'elf': ELF format, without compression 2. 'kdump-zlib': kdump-compressed format, with zlib-compressed 3. 'kdump-lzo': kdump-compressed format, with lzo-compressed 4. 'kdump-snappy': kdump-compressed format, with snappy-compressed Without 'format' being set, it is same as 'elf'. And if non-elf format is specified, paging and filter is not allowed. Note: 1. The kdump-compressed format is readable only with the crash utility and makedumpfile, and it can be smaller than the ELF format because of the compression support. 2. The kdump-compressed format is the 6th edition. Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Diffstat (limited to 'hmp.c')
-rw-r--r--hmp.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/hmp.c b/hmp.c
index e3ddd4654d..2f279c4ff2 100644
--- a/hmp.c
+++ b/hmp.c
@@ -1311,8 +1311,11 @@ void hmp_dump_guest_memory(Monitor *mon, const QDict *qdict)
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 (has_begin) {
@@ -1325,7 +1328,7 @@ 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,
- &errp);
+ has_format, dump_format, &errp);
hmp_handle_error(mon, &errp);
g_free(prot);
}