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[Qemu-devel] [PATCH 0/7] VNVRAM persistent storage
From: |
Corey Bryant |
Subject: |
[Qemu-devel] [PATCH 0/7] VNVRAM persistent storage |
Date: |
Thu, 23 May 2013 13:44:40 -0400 |
This patch series provides VNVRAM persistent storage support that
QEMU can use internally. The initial target user will be a software
vTPM 1.2 backend that needs to store keys in VNVRAM and be able to
reboot/migrate and retain the keys.
This support uses QEMU's block driver to provide persistent storage
by reading/writing VNVRAM data from/to a drive image. The VNVRAM
drive image is provided with the -drive command line option just like
any other drive image and the vnvram_create() API will find it.
The APIs allow for VNVRAM entries to be registered, one at a time,
each with a maximum blob size. Entry blobs can then be read/written
from/to an entry on the drive. Here's an example of usage:
VNVRAM *vnvram;
int errcode
const VNVRAMEntryName entry_name;
const char *blob_w = "blob data";
char *blob_r;
uint32_t blob_r_size;
vnvram = vnvram_create("drive-ide0-0-0", false, &errcode);
strcpy((char *)entry_name, "first-entry");
vnvram_register_entry(vnvram, &entry_name, 1024);
vnvram_write_entry(vnvram, &entry_name, (char *)blob_w, strlen(blob_w)+1);
vnvram_read_entry(vnvram, &entry_name, &blob_r, &blob_r_size);
vnvram_delete(vnvram);
Thanks,
Corey
Corey Bryant (7):
vnvram: VNVRAM bdrv support
vnvram: VNVRAM in-memory support
vnvram: VNVRAM bottom-half r/w scheduling support
vnvram: VNVRAM internal APIs
vnvram: VNVRAM additional debug support
main: Initialize VNVRAM
monitor: QMP/HMP support for retrieving VNVRAM details
Makefile.objs | 2 +
hmp.c | 32 ++
hmp.h | 1 +
monitor.c | 7 +
qapi-schema.json | 47 ++
qmp-commands.hx | 41 ++
vl.c | 6 +
vnvram.c | 1254 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
vnvram.h | 36 ++
9 files changed, 1426 insertions(+), 0 deletions(-)
create mode 100644 vnvram.c
create mode 100644 vnvram.h
- [Qemu-devel] [PATCH 0/7] VNVRAM persistent storage,
Corey Bryant <=
- [Qemu-devel] [PATCH 2/7] vnvram: VNVRAM in-memory support, Corey Bryant, 2013/05/23
- [Qemu-devel] [PATCH 3/7] vnvram: VNVRAM bottom-half r/w scheduling support, Corey Bryant, 2013/05/23
- [Qemu-devel] [PATCH 5/7] vnvram: VNVRAM additional debug support, Corey Bryant, 2013/05/23
- [Qemu-devel] [PATCH 4/7] vnvram: VNVRAM internal APIs, Corey Bryant, 2013/05/23
- [Qemu-devel] [PATCH 6/7] main: Initialize VNVRAM, Corey Bryant, 2013/05/23
- [Qemu-devel] [PATCH 7/7] monitor: QMP/HMP support for retrieving VNVRAM details, Corey Bryant, 2013/05/23