Re: Enhance ptyfs to handle multiple instances.

[Ilya Zykov <netbsd%izyk.ru@localhost>]

Hello!

Correct "ptyfs_readdir" for multi mount points use.

 ptyfs.h       |    1 +
 ptyfs_subr.c  |    3 +--
 ptyfs_vnops.c |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

Ilya.

Index: fs/ptyfs/ptyfs.h
===================================================================
RCS file: /cvsil/nbcur/src/sys/fs/ptyfs/ptyfs.h,v
retrieving revision 1.4
diff -u -r1.4 ptyfs.h
--- fs/ptyfs/ptyfs.h    19 Mar 2014 04:53:36 -0000      1.4
+++ fs/ptyfs/ptyfs.h    21 Mar 2014 09:29:12 -0000
@@ -148,6 +148,7 @@
 #define PTYFSTOV(ptyfs)        ((ptyfs)->ptyfs_vnode)
 
 int ptyfs_freevp(struct vnode *);
+struct vnode *ptyfs_used_get(ptyfstype, int, struct mount *, int);
 int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int,
     struct lwp *);
 void ptyfs_hashinit(void);
Index: fs/ptyfs/ptyfs_subr.c
===================================================================
RCS file: /cvsil/nbcur/src/sys/fs/ptyfs/ptyfs_subr.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 ptyfs_subr.c
--- fs/ptyfs/ptyfs_subr.c       4 Mar 2014 18:16:03 -0000       1.1.1.1
+++ fs/ptyfs/ptyfs_subr.c       21 Mar 2014 09:29:12 -0000
@@ -105,7 +105,6 @@
 static void ptyfs_hashins(struct ptyfsnode *);
 static void ptyfs_hashrem(struct ptyfsnode *);
 
-static struct vnode *ptyfs_used_get(ptyfstype, int, struct mount *, int);
 static struct ptyfsnode *ptyfs_free_get(ptyfstype, int, struct lwp *);
 
 static void ptyfs_rehash(kmutex_t *, struct ptyfs_hashhead **,
@@ -186,7 +185,7 @@
  * allocate a ptyfsnode/vnode pair.  the vnode is
  * referenced, and locked.
  *
- * the pid, ptyfs_type, and mount point uniquely
+ * the pty, ptyfs_type, and mount point uniquely
  * identify a ptyfsnode.  the mount point is needed
  * because someone might mount this filesystem
  * twice.
Index: fs/ptyfs/ptyfs_vnops.c
===================================================================
RCS file: /cvsil/nbcur/src/sys/fs/ptyfs/ptyfs_vnops.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 ptyfs_vnops.c
--- fs/ptyfs/ptyfs_vnops.c      4 Mar 2014 18:16:03 -0000       1.1.1.1
+++ fs/ptyfs/ptyfs_vnops.c      21 Mar 2014 09:29:12 -0000
@@ -711,7 +711,7 @@
        }
        for (; uio->uio_resid >= UIO_MX && i < npty; i++) {
                /* check for used ptys */
-               if (pty_isfree(i - 2, 1))
+               if (ptyfs_used_get(PTYFSptc, i - 2, vp->v_mount, 0) == NULL)
                        continue;
 
                dp->d_fileno = PTYFS_FILENO(i - 2, PTYFSpts);