netdev - [PATCH net v1] unix: define and set show_fdinfo only if procfs is enabled

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Message-Id: <20200227133442.18728-1-tklauser@distanz.ch>
Date:   Thu, 27 Feb 2020 14:34:42 +0100
From:   Tobias Klauser <tklauser@...tanz.ch>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Kirill Tkhai <ktkhai@...tuozzo.com>,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH net v1] unix: define and set show_fdinfo only if procfs is enabled

Follow the pattern used with other *_show_fdinfo functions and only
define unix_show_fdinfo and set it in proto_ops if CONFIG_PROC_FS
is set.

Fixes: 3c32da19a858 ("unix: Show number of pending scm files of receive queue in fdinfo")
Reviewed-by: Kirill Tkhai <ktkhai@...tuozzo.com>
Signed-off-by: Tobias Klauser <tklauser@...tanz.ch>
---
v1:
 - s/CONFIG_PROCFS/CONFIG_PROC_FS/

 net/unix/af_unix.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 62c12cb5763e..68debcb28fa4 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -682,6 +682,7 @@ static int unix_set_peek_off(struct sock *sk, int val)
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 static void unix_show_fdinfo(struct seq_file *m, struct socket *sock)
 {
 	struct sock *sk = sock->sk;
@@ -692,6 +693,9 @@ static void unix_show_fdinfo(struct seq_file *m, struct socket *sock)
 		seq_printf(m, "scm_fds: %u\n", READ_ONCE(u->scm_stat.nr_fds));
 	}
 }
+#else
+#define unix_show_fdinfo NULL
+#endif
 
 static const struct proto_ops unix_stream_ops = {
 	.family =	PF_UNIX,
-- 
2.25.0