svn commit: r329703 - head/sys/compat/linux

[Hans Petter Selasky]

Author: hselasky
Date: Wed Feb 21 10:13:17 2018
New Revision: 329703
URL: https://svnweb.freebsd.org/changeset/base/329703

Log:
  Allow LinuxKPI character devices to receive mmap() calls from the Linux
  binary mode user-space emulation layer. This is a regression issue after
  r328436, when LinuxKPI character devices started to use DTYPE_DEV in
  the "f_type" field of the associated file structure(s).
  
  MFC after:	3 days
  Found by:	Johannes Lundberg <johalun0 at gmail.com>
  Sponsored by:	Mellanox Technologies

Modified:
  head/sys/compat/linux/linux_mmap.c

Modified: head/sys/compat/linux/linux_mmap.c
==============================================================================
--- head/sys/compat/linux/linux_mmap.c	Wed Feb 21 08:13:17 2018	(r329702)
+++ head/sys/compat/linux/linux_mmap.c	Wed Feb 21 10:13:17 2018	(r329703)
@@ -129,7 +129,7 @@ linux_mmap_common(struct thread *td, uintptr_t addr, s
 		error = fget(td, fd, cap_rights_init(&rights, CAP_MMAP), &fp);
 		if (error != 0)
 			return (error);
-		if (fp->f_type != DTYPE_VNODE) {
+		if (fp->f_type != DTYPE_VNODE && fp->f_type != DTYPE_DEV) {
 			fdrop(fp, td);
 			return (EINVAL);
 		}