vfs: show unreachable paths in getcwd and proc
authorMiklos Szeredi <mszeredi@suse.cz>
Tue, 10 Aug 2010 09:41:41 +0000 (11:41 +0200)
committerAl Viro <viro@zeniv.linux.org.uk>
Wed, 11 Aug 2010 04:29:47 +0000 (00:29 -0400)
commit8df9d1a4142311c084ffeeacb67cd34d190eff74
tree512e018114ea506659fac73d838bfca0fb97a5a4
parentffd1f4ed5bddccf2277e3d8525bcedf1983319f8
vfs: show unreachable paths in getcwd and proc

Prepend "(unreachable)" to path strings if the path is not reachable
from the current root.

Two places updated are
 - the return string from getcwd()
 - and symlinks under /proc/$PID.

Other uses of d_path() are left unchanged (we know that some old
software crashes if /proc/mounts is changed).

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/dcache.c
fs/proc/base.c
include/linux/dcache.h
include/linux/path.h