Add a new fo_fill_kinfo fileops method to add type-specific information to

struct kinfo_file.
- Move the various fill_*_info() methods out of kern_descrip.c and into the
  various file type implementations.
- Rework the support for kinfo_ofile to generate a suitable kinfo_file object
  for each file and then convert that to a kinfo_ofile structure rather than
  keeping a second, different set of code that directly manipulates
  type-specific file information.
- Remove the shm_path() and ksem_info() layering violations.

Differential Revision:	https://reviews.freebsd.org/D775
Reviewed by:	kib, glebius (earlier version)

1 files changed, 14 insertions, 0 deletions

diff --git a/sys/kern/tty_pts.c b/sys/kern/tty_pts.c
index 16cbb3c..58cbc52 100644
--- a/sys/kern/tty_pts.c
+++ b/sys/kern/tty_pts.c
@@ -62,6 +62,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/systm.h>
 #include <sys/tty.h>
 #include <sys/ttycom.h>
+#include <sys/user.h>
 
 #include <machine/stdarg.h>
 
@@ -580,6 +581,18 @@ ptsdev_close(struct file *fp, struct thread *td)
 	return (0);
 }
 
+static int
+ptsdev_fill_kinfo(struct file *fp, struct kinfo_file *kif, struct filedesc *fdp)
+{
+	struct tty *tp;
+
+	kif->kf_type = KF_TYPE_PTS;
+	tp = fp->f_data;
+	kif->kf_un.kf_pts.kf_pts_dev = tty_udev(tp);
+	strlcpy(kif->kf_path, tty_devname(tp), sizeof(kif->kf_path));
+	return (0);
+}
+
 static struct fileops ptsdev_ops = {
 	.fo_read	= ptsdev_read,
 	.fo_write	= ptsdev_write,
@@ -592,6 +605,7 @@ static struct fileops ptsdev_ops = {
 	.fo_chmod	= invfo_chmod,
 	.fo_chown	= invfo_chown,
 	.fo_sendfile	= invfo_sendfile,
+	.fo_fill_kinfo	= ptsdev_fill_kinfo,
 	.fo_flags	= DFLAG_PASSABLE,
 };