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#if !defined(_RDMA_IB_H)
#define _RDMA_IB_H
#include <linux/sched.h>
/*
* 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 */
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