linux-only jail possible?

[Ed Schouten]

* Ed Schouten <ed at 80386.nl> wrote:
> Unfortunately it doesn't contain any open() calls on /dev/ptmx, but I
> found a way to `fix' it:
> 
> <snip>

Behold, another way to fix this. Still not beautiful, but in my opinion
not too bad.

Index: sys/compat/linprocfs/linprocfs.c
===================================================================
--- sys/compat/linprocfs/linprocfs.c	(revision 204763)
+++ sys/compat/linprocfs/linprocfs.c	(working copy)
@@ -1312,6 +1312,8 @@
 	    NULL, NULL, NULL, PFS_RD);
 	pfs_create_file(dir, "status", &linprocfs_doprocstatus,
 	    NULL, NULL, NULL, PFS_RD);
+	/* XXX: Hack to make ttyname() work. */
+	pfs_create_file(dir, "fd", NULL, NULL, NULL, NULL, PFS_RD);
 
 	/* /proc/scsi/... */
 	dir = pfs_create_dir(root, "scsi", NULL, NULL, NULL, 0);

This creates a bogus file called /proc/%d/fd. Because of this, the
readlink() call will return ENOTDIR.

-- 
 Ed Schouten <ed at 80386.nl>
 WWW: http://80386.nl/
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