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Date: Wed, 8 Jan 2014 14:18:08 +0900 From: Masatake YAMATO <yamato@...hat.com> To: netdev@...r.kernel.org Cc: yamato@...hat.com Subject: [PATCH] unix: show socket peer if no addr is given in /proc/net/unix Path field of /proc/net/unix is empty if an address is not given to a socket. Typical way to create such socket is calling socketpair. The empty fields make it difficult to understand the communication between processes. e.g. lsof cannot resolve the role of file descriptors well. This patch fills the empty fields with unix_peer. Signed-off-by: Masatake YAMATO <yamato@...hat.com> --- net/unix/af_unix.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 800ca61..1700133 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -2340,7 +2340,9 @@ static int unix_seq_show(struct seq_file *seq, void *v) else { struct sock *s = v; struct unix_sock *u = unix_sk(s); + struct sock *s_peer; unix_state_lock(s); + s_peer = unix_peer(s); seq_printf(seq, "%pK: %08X %08X %08X %04X %02X %5lu", s, @@ -2367,7 +2369,8 @@ static int unix_seq_show(struct seq_file *seq, void *v) } for ( ; i < len; i++) seq_putc(seq, u->addr->name->sun_path[i]); - } + } else if (s_peer) + seq_printf(seq, " #%pK", s_peer); unix_state_unlock(s); seq_putc(seq, '\n'); } -- 1.8.4.2 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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