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Date: Sat, 1 Apr 2017 04:31:57 +0300
From: Andrei Vagin <avagin@...nvz.org>
To: stephen@...workplumber.org
Cc: netdev@...r.kernel.org, Andrei Vagin <avagin@...tuozzo.com>
Subject: [PATCH] ss: replace all zero characters in a unix name to '@'
From: Andrei Vagin <avagin@...tuozzo.com>
A name of an abstract socket can contain zero characters.
Now we replace only the first character. If a name contains more
than one zero character, the ss tool shows only a part of the name:
u_str UNCONN 0 0 @ 1931097 * 0
the output with this patch:
u_str UNCONN 0 0 @@zdtm-./sk-unix-unconn-23/@ 1931097 * 0
Signed-off-by: Andrei Vagin <avagin@...tuozzo.com>
---
misc/ss.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/misc/ss.c b/misc/ss.c
index 5cda728..a3200a1 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -2726,10 +2726,24 @@ static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
if (tb[UNIX_DIAG_NAME]) {
int len = RTA_PAYLOAD(tb[UNIX_DIAG_NAME]);
+ if (len > sizeof(name) - 1)
+ len = sizeof(name) - 1;
+
memcpy(name, RTA_DATA(tb[UNIX_DIAG_NAME]), len);
name[len] = '\0';
- if (name[0] == '\0')
+ if (name[0] == '\0') {
+ char *n;
+
name[0] = '@';
+
+ n = name + 1;
+ while (n && n < name + len) {
+ n = memchr(n, 0, name + len - n);
+ if (n == NULL)
+ break;
+ *n = '@';
+ }
+ }
stat.name = &name[0];
memcpy(stat.local.data, &stat.name, sizeof(stat.name));
}
--
2.7.4
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