https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196483

--- Comment #3 from Kirk McKusick <[email protected]> ---
Comment on attachment 151321
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=151321
0001-HBSD-change-vfs_setopt-_part-.-s-len-type-to-check-b.patch

I agree with the sentiment reported here. But it is incomplete. The type of the
len field declared in struct vfsopt (declared in sys/mount.h) needs to be
changed to size_t. Also the type of field len in struct mntarg (declared in
kern/vfs_mount.c)
needs to be changed to size_t. Another function that needs to have its len
parameter changed to size_t is vfs_copyopt. In short, a pass needs to be made
over kern/vfs_mount.c to make the use of len consistent throughout. Then the
callers of the affected functions need to ensure that they are calling with
appropriate parameters.

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