[libvirt] [PATCH 9/9] Add support for qcow encrypted volumes to qemu.

--- src/qemu_driver.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 50 insertions(+), 1 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 9ead5fd..b57db31 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -2172,10 +2172,59 @@ qemudMonitorCommand(const virDomainObjPtr vm, } static int +qemudMonitorSendVolumePassphrase(const virDomainObjPtr vm, + const char *buf, + const char *prompt, + void *data ATTRIBUTE_UNUSED) +{ + const char *path; + size_t path_len; + int i; + + /* The complete prompt looks like this: + ide0-hd0 (/path/to/volume) is encrypted. + Password: + prompt starts with ") is encrypted". Extract /path/to/volume. */ + for (path = prompt; path > buf && path[-1] != '('; path-- ) + ; + if (path == buf) + return -1; + path_len = prompt - path; + + for (i = 0; i < vm->def->ndisks; i++) { + virDomainDiskDefPtr disk; + + disk = vm->def->disks[i]; + if (disk->src != NULL && memcmp(disk->src, path, path_len) == 0 && + disk->src[path_len] == '\0' && + disk->encryption != NULL && + disk->encryption->format == VIR_STORAGE_ENCRYPTION_FORMAT_QCOW) { + const char *passphrase; + + passphrase = disk->encryption->v.qcow.passphrase; + if (passphrase != NULL) { + size_t passphrase_len; + + passphrase_len = strlen(passphrase); + if (safewrite(vm->monitor, passphrase, passphrase_len) != + passphrase_len) + return -1; + if (safewrite(vm->monitor, "\r", 1) != 1) + return -1; + return 0; + } + } + } + return -1; +} + +static int qemudMonitorSendCont(const virDomainObjPtr vm) { char *reply; - if (qemudMonitorCommand(vm, "cont", &reply) < 0) + if (qemudMonitorCommandWithHandler(vm, "cont", ") is encrypted.", + qemudMonitorSendVolumePassphrase, + NULL, &reply) < 0) return -1; qemudDebug ("%s: cont reply: %s", vm->def->name, info); VIR_FREE(reply); -- 1.6.2.5