[PATCH 4/5] apparmor: Allow pasta to remount /proc, access entries under its own copy

Since commit b0e450aa8500 ("pasta: Detach mount namespace, (re)mount
procfs before spawning command"), we need to explicitly permit mount
of /proc, and access to entries under /proc/PID/net (after remount,
that's what AppArmor sees as path).

Fixes: b0e450aa8500 ("pasta: Detach mount namespace, (re)mount procfs before spawning
command")
Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
---
 contrib/apparmor/abstractions/pasta | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/contrib/apparmor/abstractions/pasta b/contrib/apparmor/abstractions/pasta
index 9cba25a..05c5d46 100644
--- a/contrib/apparmor/abstractions/pasta
+++ b/contrib/apparmor/abstractions/pasta
@@ -15,11 +15,18 @@
 
   include <abstractions/passt>
 
+  mount		""	-> "/proc/",
+
   @{PROC}/net/tcp			r,	# procfs_scan_listen(), util.c
   @{PROC}/net/tcp6			r,
   @{PROC}/net/udp			r,
   @{PROC}/net/udp6			r,
 
+  @{PROC}/@{pid}/net/tcp		r,	# procfs_scan_listen(), util.c
+  @{PROC}/@{pid}/net/tcp6		r,
+  @{PROC}/@{pid}/net/udp		r,
+  @{PROC}/@{pid}/net/udp6		r,
+
   @{run}/user/@{uid}/netns/*		r,	# pasta_open_ns(), pasta.c
 
   @{PROC}/[0-9]*/ns/net			r,	# pasta_wait_for_ns(),
-- 
2.39.2