diff options
Diffstat (limited to 'extras/mini-os/tpmback.c')
-rw-r--r-- | extras/mini-os/tpmback.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/extras/mini-os/tpmback.c b/extras/mini-os/tpmback.c index cff3861ad2..21dd20606f 100644 --- a/extras/mini-os/tpmback.c +++ b/extras/mini-os/tpmback.c @@ -92,6 +92,7 @@ struct tpmif { enum { DISCONNECTED, DISCONNECTING, CONNECTED } status; unsigned char uuid[16]; + void* opaque; /* state flags */ int flags; @@ -391,6 +392,7 @@ inline tpmif_t* __init_tpmif(domid_t domid, unsigned int handle) tpmif->status = DISCONNECTED; tpmif->page = NULL; tpmif->flags = 0; + tpmif->opaque = NULL; memset(tpmif->uuid, 0, sizeof(tpmif->uuid)); return tpmif; } @@ -794,6 +796,29 @@ static void generate_backend_events(const char* path) return; } +void* tpmback_get_opaque(domid_t domid, unsigned int handle) +{ + tpmif_t* tpmif; + if((tpmif = get_tpmif(domid, handle)) == NULL) { + TPMBACK_DEBUG("get_opaque() failed, %u/%u is an invalid frontend\n", (unsigned int) domid, handle); + return NULL; + } + + return tpmif->opaque; +} + +int tpmback_set_opaque(domid_t domid, unsigned int handle, void *opaque) +{ + tpmif_t* tpmif; + if((tpmif = get_tpmif(domid, handle)) == NULL) { + TPMBACK_DEBUG("set_opaque() failed, %u/%u is an invalid frontend\n", (unsigned int) domid, handle); + return -1; + } + + tpmif->opaque = opaque; + return 0; +} + unsigned char* tpmback_get_uuid(domid_t domid, unsigned int handle) { tpmif_t* tpmif; @@ -890,12 +915,12 @@ void shutdown_tpmback(void) schedule(); } -inline void init_tpmcmd(tpmcmd_t* tpmcmd, domid_t domid, unsigned int handle, unsigned char uuid[16]) +static void init_tpmcmd(tpmcmd_t* tpmcmd, domid_t domid, unsigned int handle, void *opaque) { tpmcmd->domid = domid; tpmcmd->locality = -1; tpmcmd->handle = handle; - memcpy(tpmcmd->uuid, uuid, sizeof(tpmcmd->uuid)); + tpmcmd->opaque = opaque; tpmcmd->req = NULL; tpmcmd->req_len = 0; tpmcmd->resp = NULL; @@ -917,7 +942,7 @@ tpmcmd_t* get_request(tpmif_t* tpmif) { if((cmd = malloc(sizeof(*cmd))) == NULL) { goto error; } - init_tpmcmd(cmd, tpmif->domid, tpmif->handle, tpmif->uuid); + init_tpmcmd(cmd, tpmif->domid, tpmif->handle, tpmif->opaque); shr = tpmif->page; cmd->req_len = shr->length; |