If the target process is in a different mount namespace, the root symlink actually shows that view of the filesystem. As an example: /* Terminal 1 */ $ unshare -Urnm 17168 /* Terminal 2 */ Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> --- man5/proc.5 | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/man5/proc.5 b/man5/proc.5 index 3a5f4407c657..0680902c54a5 100644 --- a/man5/proc.5 +++ b/man5/proc.5 @@ -1513,6 +1513,10 @@ root directory, and behaves in the same way as and .IR fd/* . +Note however that this file is not merely a symlink. +It provides the same view of the filesystem (including namespaces and the +set of per-process mounts) as the process itself. + .\" The following was still true as at kernel 2.6.13 In a multithreaded process, the contents of this symbolic link are not available if the main thread has already terminated -- 2.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
