include/uapi/linux/tee.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/tee.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/tee.h
Extension
.h
Size
16158 bytes
Lines
482
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct tee_ioctl_version_data {
	__u32 impl_id;
	__u32 impl_caps;
	__u32 gen_caps;
};

/**
 * TEE_IOC_VERSION - query version of TEE
 *
 * Takes a tee_ioctl_version_data struct and returns with the TEE version
 * data filled in.
 */
#define TEE_IOC_VERSION		_IOR(TEE_IOC_MAGIC, TEE_IOC_BASE + 0, \
				     struct tee_ioctl_version_data)

/**
 * struct tee_ioctl_shm_alloc_data - Shared memory allocate argument
 * @size:	[in/out] Size of shared memory to allocate
 * @flags:	[in/out] Flags to/from allocation.
 * @id:		[out] Identifier of the shared memory
 *
 * The flags field should currently be zero as input. Updated by the call
 * with actual flags as defined by TEE_IOCTL_SHM_* above.
 * This structure is used as argument for TEE_IOC_SHM_ALLOC below.
 */
struct tee_ioctl_shm_alloc_data {
	__u64 size;
	__u32 flags;
	__s32 id;
};

/**
 * TEE_IOC_SHM_ALLOC - allocate shared memory
 *
 * Allocates shared memory between the user space process and secure OS.
 *
 * Returns a file descriptor on success or < 0 on failure
 *
 * The returned file descriptor is used to map the shared memory into user
 * space. The shared memory is freed when the descriptor is closed and the
 * memory is unmapped.
 */
#define TEE_IOC_SHM_ALLOC	_IOWR(TEE_IOC_MAGIC, TEE_IOC_BASE + 1, \
				     struct tee_ioctl_shm_alloc_data)

/**
 * struct tee_ioctl_buf_data - Variable sized buffer
 * @buf_ptr:	[in] A __user pointer to a buffer
 * @buf_len:	[in] Length of the buffer above
 *
 * Used as argument for TEE_IOC_OPEN_SESSION, TEE_IOC_INVOKE,
 * TEE_IOC_SUPPL_RECV, and TEE_IOC_SUPPL_SEND below.
 */
struct tee_ioctl_buf_data {
	__u64 buf_ptr;
	__u64 buf_len;
};

/*
 * Attributes for struct tee_ioctl_param, selects field in the union
 */
#define TEE_IOCTL_PARAM_ATTR_TYPE_NONE		0	/* parameter not used */

/*
 * These defines value parameters (struct tee_ioctl_param_value)
 */
#define TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT	1
#define TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT	2
#define TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT	3	/* input and output */

/*
 * These defines shared memory reference parameters (struct
 * tee_ioctl_param_memref)
 */
#define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INPUT	5
#define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_OUTPUT	6
#define TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT	7	/* input and output */

/*
 * These defines userspace buffer parameters.
 */
#define TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_INPUT	8
#define TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_OUTPUT	9
#define TEE_IOCTL_PARAM_ATTR_TYPE_UBUF_INOUT	10	/* input and output */

/*
 * These defines object reference parameters.
 */
#define TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF_INPUT	11
#define TEE_IOCTL_PARAM_ATTR_TYPE_OBJREF_OUTPUT	12

Annotation

Implementation Notes