linux-kernel - [PATCH 5.16 0143/1017] landlock: Use square brackets around "landlock-ruleset"

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Message-Id: <20220405070358.448959069@linuxfoundation.org>
Date:   Tue,  5 Apr 2022 09:17:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, linux-security-module@...r.kernel.org,
        Christian Brauner <christian.brauner@...ntu.com>,
        Mickaël Salaün <mic@...ux.microsoft.com>
Subject: [PATCH 5.16 0143/1017] landlock: Use square brackets around "landlock-ruleset"

From: Christian Brauner <christian.brauner@...ntu.com>

commit aea0b9f2486da8497f35c7114b764bf55e17c7ea upstream.

Make the name of the anon inode fd "[landlock-ruleset]" instead of
"landlock-ruleset". This is minor but most anon inode fds already
carry square brackets around their name:

    [eventfd]
    [eventpoll]
    [fanotify]
    [fscontext]
    [io_uring]
    [pidfd]
    [signalfd]
    [timerfd]
    [userfaultfd]

For the sake of consistency lets do the same for the landlock-ruleset anon
inode fd that comes with landlock. We did the same in
1cdc415f1083 ("uapi, fsopen: use square brackets around "fscontext" [ver #2]")
for the new mount api.

Cc: linux-security-module@...r.kernel.org
Signed-off-by: Christian Brauner <christian.brauner@...ntu.com>
Link: https://lore.kernel.org/r/20211011133704.1704369-1-brauner@kernel.org
Cc: stable@...r.kernel.org
Signed-off-by: Mickaël Salaün <mic@...ux.microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 security/landlock/syscalls.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/landlock/syscalls.c
+++ b/security/landlock/syscalls.c
@@ -192,7 +192,7 @@ SYSCALL_DEFINE3(landlock_create_ruleset,
 		return PTR_ERR(ruleset);
 
 	/* Creates anonymous FD referring to the ruleset. */
-	ruleset_fd = anon_inode_getfd("landlock-ruleset", &ruleset_fops,
+	ruleset_fd = anon_inode_getfd("[landlock-ruleset]", &ruleset_fops,
 			ruleset, O_RDWR | O_CLOEXEC);
 	if (ruleset_fd < 0)
 		landlock_put_ruleset(ruleset);