TEEC_Result TEEC_InitializeContext(const char *name,
TEEC_Context *context)
{
int error;
struct tf_connection *connection = NULL;
error = tf_open(tf_get_device(), NULL, &connection);
if (error != 0) {
dprintk(KERN_ERR "TEEC_InitializeContext(%s): "
"tf_open failed (error %d)!\n",
(name == NULL ? "(null)" : name), error);
goto error;
}
BUG_ON(connection == NULL);
connection->owner = TF_CONNECTION_OWNER_KERNEL;
error = tf_create_device_context(connection);
if (error != 0) {
dprintk(KERN_ERR "TEEC_InitializeContext(%s): "
"tf_create_device_context failed (error %d)!\n",
(name == NULL ? "(null)" : name), error);
goto error;
}
context->imp._connection = connection;
/*spin_lock_init(&context->imp._operations_lock);*/
return S_SUCCESS;
error:
tf_close(connection);
return TEEC_encode_error(error);
}
static int tf_ctrl_device_open(struct inode *inode, struct file *file)
{
int error;
struct tf_connection *connection = NULL;
dpr_info("%s(%u:%u, %p)\n",
__func__, imajor(inode), iminor(inode), file);
/* Dummy lseek for non-seekable driver */
error = nonseekable_open(inode, file);
if (error != 0) {
dpr_err("%s(%p): "
"nonseekable_open failed (error %d)!\n",
__func__, file, error);
goto error;
}
#ifndef CONFIG_ANDROID
/*
* Check file flags. We only autthorize the O_RDWR access
*/
if (file->f_flags != O_RDWR) {
dpr_err("%s(%p): "
"Invalid access mode %u\n",
__func__, file, file->f_flags);
error = -EACCES;
goto error;
}
#endif
error = tf_ctrl_check_omap_type();
if (error <= 0)
return error;
error = tf_open(tf_get_device(), file, &connection);
if (error != 0) {
dpr_err("%s(%p): tf_open failed (error %d)!\n",
__func__, file, error);
goto error;
}
file->private_data = connection;
/*
* Successful completion.
*/
dpr_info("%s(%p): Success\n", __func__, file);
return 0;
/*
* Error handling.
*/
error:
tf_close(connection);
dpr_info("%s(%p): Failure (error %d)\n",
__func__, file, error);
return error;
}
static int tf_device_open(struct inode *inode, struct file *file)
{
int error;
struct tf_device *dev = &g_tf_dev;
struct tf_connection *connection = NULL;
dprintk(KERN_INFO "tf_device_open(%u:%u, %p)\n",
imajor(inode), iminor(inode), file);
/* Dummy lseek for non-seekable driver */
error = nonseekable_open(inode, file);
if (error != 0) {
dprintk(KERN_ERR "tf_device_open(%p): "
"nonseekable_open failed (error %d)!\n",
file, error);
goto error;
}
#ifndef CONFIG_ANDROID
/*
* Check file flags. We only autthorize the O_RDWR access
*/
if (file->f_flags != O_RDWR) {
dprintk(KERN_ERR "tf_device_open(%p): "
"Invalid access mode %u\n",
file, file->f_flags);
error = -EACCES;
goto error;
}
#endif
/*
* Open a new connection.
*/
error = tf_open(dev, file, &connection);
if (error != 0) {
dprintk(KERN_ERR "tf_device_open(%p): "
"tf_open failed (error %d)!\n",
file, error);
goto error;
}
file->private_data = connection;
/*
* Send the CreateDeviceContext command to the secure
*/
error = tf_create_device_context(connection);
if (error != 0) {
dprintk(KERN_ERR "tf_device_open(%p): "
"tf_create_device_context failed (error %d)!\n",
file, error);
goto error1;
}
/*
* Successful completion.
*/
dprintk(KERN_INFO "tf_device_open(%p): Success (connection=%p)\n",
file, connection);
return 0;
/*
* Error handling.
*/
error1:
tf_close(connection);
error:
dprintk(KERN_INFO "tf_device_open(%p): Failure (error %d)\n",
file, error);
return error;
}
int fcache_read(FBLOCK ** cp, char *filename)
{
int n, nmax, tchars, fd;
char *buff;
FBLOCK *fp, *tfp;
/*
* Free a prior buffer chain
*/
fp = *cp;
while (fp != NULL) {
tfp = fp->hdr.nxt;
free_mbuf(fp);
fp = tfp;
}
*cp = NULL;
/*
* Read the text file into a new chain
*/
if ((fd = tf_open(filename, O_RDONLY)) == -1) {
/*
* Failure: log the event
*/
log_write(LOG_PROBLEMS, "FIL", "OPEN", "Couldn't open file '%s'.", filename);
tf_close(fd);
return -1;
}
buff = alloc_lbuf("fcache_read.temp");
/*
* Set up the initial cache buffer to make things easier
*/
fp = (FBLOCK *) alloc_mbuf("fcache_read.first");
fp->hdr.nxt = NULL;
fp->hdr.nchars = 0;
*cp = fp;
tchars = 0;
/*
* Process the file, one lbuf at a time
*/
nmax = read(fd, buff, LBUF_SIZE);
while (nmax > 0) {
for (n = 0; n < nmax; n++) {
switch (buff[n]) {
case '\n':
fp = fcache_fill(fp, '\r');
fp = fcache_fill(fp, '\n');
tchars += 2;
case '\0':
case '\r':
break;
default:
fp = fcache_fill(fp, buff[n]);
tchars++;
}
}
nmax = read(fd, buff, LBUF_SIZE);
}
free_lbuf(buff);
tf_close(fd);
/*
* If we didn't read anything in, toss the initial buffer
*/
if (fp->hdr.nchars == 0) {
*cp = NULL;
free_mbuf(fp);
}
return tchars;
}
static int tf_device_open(struct inode *inode, struct file *file)
{
int error;
struct tf_device *dev = &g_tf_dev;
struct tf_connection *connection = NULL;
dprintk(KERN_INFO "tf_device_open(%u:%u, %p)\n",
imajor(inode), iminor(inode), file);
/* Dummy lseek for non-seekable driver */
error = nonseekable_open(inode, file);
if (error != 0) {
dprintk(KERN_ERR "tf_device_open(%p): "
"nonseekable_open failed (error %d)!\n",
file, error);
goto error;
}
/*
* Open a new connection.
*/
error = tf_open(dev, file, &connection);
if (error != 0) {
dprintk(KERN_ERR "tf_device_open(%p): "
"tf_open failed (error %d)!\n",
file, error);
goto error;
}
file->private_data = connection;
/*
* Send the CreateDeviceContext command to the secure
*/
error = tf_create_device_context(connection);
if (error != 0) {
dprintk(KERN_ERR "tf_device_open(%p): "
"tf_create_device_context failed (error %d)!\n",
file, error);
goto error1;
}
/*
* Successful completion.
*/
dprintk(KERN_INFO "tf_device_open(%p): Success (connection=%p)\n",
file, connection);
return 0;
/*
* Error handling.
*/
error1:
tf_close(connection);
error:
dprintk(KERN_INFO "tf_device_open(%p): Failure (error %d)\n",
file, error);
return error;
}
