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wolfTPM
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Avoid blocking during fwTPM client cleanup

pull/582/head
Aidan Garske 2026-08-24 11:12:22 -07:00
parent 0ee095d20d
commit cfabfb8caa
1 changed files with 6 additions and 1 deletions
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7
hal/tpm_io_fwtpm.c
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@ -65,6 +65,11 @@ static int FWTPM_TIS_ClientLock(int fd)
return rc;
}
static int FWTPM_TIS_ClientTryLock(int fd)
{
return flock(fd, LOCK_EX | LOCK_NB);
}
static void FWTPM_TIS_ClientUnlock(int fd)
{
int rc;
@ -221,7 +226,7 @@ void FWTPM_TIS_ClientDisconnect(FWTPM_TIS_CLIENT_CTX* client)
}
if (client->shm != NULL) {
if (client->shmFd >= 0 &&
FWTPM_TIS_ClientLock(client->shmFd) == 0) {
FWTPM_TIS_ClientTryLock(client->shmFd) == 0) {
TPM2_ForceZero(client->shm->reg_data,
sizeof(client->shm->reg_data));
FWTPM_TIS_ClientUnlock(client->shmFd);