#if !defined(_RDMA_IB_H) #define _RDMA_IB_H #include /* * The IB interfaces that use write() as bi-directional ioctl() are * fundamentally unsafe, since there are lots of ways to trigger "write()" * calls from various contexts with elevated privileges. That includes the * traditional suid executable error message writes, but also various kernel * interfaces that can write to file descriptors. * * This function provides protection for the legacy API by restricting the * calling context. */ static inline bool ib_safe_file_access(struct file *filp) { return filp->f_cred == current_cred() && segment_eq(get_fs(), USER_DS); } #endif /* _RDMA_IB_H */