diff options
| author | Ilias Apalodimas | 2020-12-23 13:25:00 +0200 |
|---|---|---|
| committer | Heinrich Schuchardt | 2020-12-31 14:27:56 +0100 |
| commit | ffa375e6e56f890468baf22bcb50ee3d0292a0c4 (patch) | |
| tree | 292745e45ce8b109b271e4e5ab5f9ecc57ff1c12 /lib | |
| parent | c0c21d67f0654f9d3641b9dd3bdfd635110c2bc1 (diff) | |
efi_loader: Extra checks while opening an OPTEE session
When opening an OP-TEE session we need to check the internal return
value of OP-TEE call arguments as well the return code of the
function itself.
The code was also ignoring to close the OP-TEE session in case the
shared memory registration failed.
Fixes: f042e47e8fb43 ("efi_loader: Implement EFI variable handling via OP-TEE")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/efi_loader/efi_variable_tee.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/efi_loader/efi_variable_tee.c b/lib/efi_loader/efi_variable_tee.c index be6f3dfad46..b8808fdecad 100644 --- a/lib/efi_loader/efi_variable_tee.c +++ b/lib/efi_loader/efi_variable_tee.c @@ -36,20 +36,29 @@ static int get_connection(struct mm_connection *conn) static const struct tee_optee_ta_uuid uuid = PTA_STMM_UUID; struct udevice *tee = NULL; struct tee_open_session_arg arg; - int rc; + int rc = -ENODEV; tee = tee_find_device(tee, NULL, NULL, NULL); if (!tee) - return -ENODEV; + goto out; memset(&arg, 0, sizeof(arg)); tee_optee_ta_uuid_to_octets(arg.uuid, &uuid); rc = tee_open_session(tee, &arg, 0, NULL); - if (!rc) { - conn->tee = tee; - conn->session = arg.session; + if (rc) + goto out; + + /* Check the internal OP-TEE result */ + if (arg.ret != TEE_SUCCESS) { + rc = -EIO; + goto out; } + conn->tee = tee; + conn->session = arg.session; + + return 0; +out: return rc; } @@ -88,6 +97,7 @@ static efi_status_t optee_mm_communicate(void *comm_buf, ulong dsize) if (tee_shm_register(conn.tee, comm_buf, buf_size, 0, &shm)) { log_err("Unable to register shared memory\n"); + tee_close_session(conn.tee, conn.session); return EFI_UNSUPPORTED; } |