Unverified Commit 7d90fb52 authored by Miklos Szeredi's avatar Miklos Szeredi Committed by Christian Brauner
Browse files

selinux: add FILE__WATCH_MOUNTNS 



Watching mount namespaces for changes (mount, umount, move mount) was added
by previous patches.

This patch adds the file/watch_mountns permission that can be applied to
nsfs files (/proc/$$/ns/mnt), making it possible to allow or deny watching
a particular namespace for changes.

Suggested-by: default avatarPaul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/all/CAHC9VhTOmCjCSE2H0zwPOmpFopheexVb6jyovz92ZtpKtoVv6A@mail.gmail.com/


Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
Link: https://lore.kernel.org/r/20250224154836.958915-1-mszeredi@redhat.com


Acked-by: default avatarPaul Moore <paul@paul-moore.com>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 33cec19d

security/selinux/hooks.c

+3 −0
Original line number Diff line number Diff line
@@ -3395,6 +3395,9 @@ static int selinux_path_notify(const struct path *path, u64 mask, 
	case FSNOTIFY_OBJ_TYPE_INODE:

		perm = FILE__WATCH;

		break;

	case FSNOTIFY_OBJ_TYPE_MNTNS:

		perm = FILE__WATCH_MOUNTNS;

		break;

	default:

		return -EINVAL;

	}

security/selinux/include/classmap.h

+1 −1
Original line number Diff line number Diff line
@@ -8,7 +8,7 @@ 
	COMMON_FILE_SOCK_PERMS, "unlink", "link", "rename", "execute",   \

		"quotaon", "mounton", "audit_access", "open", "execmod", \

		"watch", "watch_mount", "watch_sb", "watch_with_perm",   \

		"watch_reads"

		"watch_reads", "watch_mountns"



#define COMMON_SOCK_PERMS                                              \

	COMMON_FILE_SOCK_PERMS, "bind", "connect", "listen", "accept", \