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George Poulios
a2a689fee0
Previous implementation was not compatible with GlobalPlatform API in the following ways: - Registered mem IDs would begin from negatives when it should have been greater than or equal to 0 - Register IOCTL would return 0 on success, when it should have been returning a file descriptor. - Register IOCTL would expect the user-space client to specify TEE_SHM_* flags dictating its behaviour when in fact, libteec never specifies flags. This commit fixes all those issues. It uses nuttx/idr.h instead of a linked list, and it uses `file_allocate` to provide file descriptors for registered shared memory. Upon close(fd), the memory is de-registered and freed accordingly. It also updates the documentation accordingly. Signed-off-by: George Poulios <gpoulios@census-labs.com>