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From 6a7cd3d4aba493c0b0d00155b1e09a867db437cf Mon Sep 17 00:00:00 2001
From: Michael Tokarev <mjt@tls.msk.ru>
Date: Wed, 20 May 2015 16:27:44 +0300
Subject: [PATCH] ip addr: support change and replace commands
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
networking/ip.c | 2 +-
networking/libiproute/ipaddress.c | 20 ++++++++++++--------
2 files changed, 13 insertions(+), 9 deletions(-)
--- a/networking/ip.c
+++ b/networking/ip.c
@@ -33,7 +33,7 @@
//usage: "{ {add|del} IFADDR dev STRING | {show|flush}\n"
//usage: " [dev STRING] [to PREFIX] }"
//usage:#define ipaddr_full_usage "\n\n"
-//usage: "ipaddr {add|delete} IFADDR dev STRING\n"
+//usage: "ipaddr {add|change|replace|delete} IFADDR dev STRING\n"
//usage: "ipaddr {show|flush} [dev STRING] [scope SCOPE-ID]\n"
//usage: " [to PREFIX] [label PATTERN]\n"
//usage: " IFADDR := PREFIX | ADDR peer PREFIX\n"
--- a/networking/libiproute/ipaddress.c
+++ b/networking/libiproute/ipaddress.c
@@ -598,7 +598,7 @@ static int default_scope(inet_prefix *lc
}
/* Return value becomes exitcode. It's okay to not return at all */
-static int ipaddr_modify(int cmd, char **argv)
+static int ipaddr_modify(int cmd, int flags, char **argv)
{
static const char option[] ALIGN1 =
"peer\0""remote\0""broadcast\0""brd\0"
@@ -622,7 +622,7 @@ static int ipaddr_modify(int cmd, char *
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST;
+ req.n.nlmsg_flags = NLM_F_REQUEST | flags;
req.n.nlmsg_type = cmd;
req.ifa.ifa_family = preferred_family;
@@ -749,16 +749,24 @@ static int ipaddr_modify(int cmd, char *
int FAST_FUNC do_ipaddr(char **argv)
{
static const char commands[] ALIGN1 =
- "add\0""delete\0""list\0""show\0""lst\0""flush\0";
+ /* 0 1 2 3 4 5 6 7 8 */
+ "add\0""change\0""chg\0""replace\0""delete\0""list\0""show\0""lst\0""flush\0";
int cmd = 2;
if (*argv) {
cmd = index_in_substrings(commands, *argv);
if (cmd < 0)
invarg(*argv, applet_name);
argv++;
- if (cmd <= 1)
- return ipaddr_modify((cmd == 0) ? RTM_NEWADDR : RTM_DELADDR, argv);
+ if (cmd <= 4) {
+ return ipaddr_modify(
+ /*cmd:*/ cmd == 4 ? RTM_DELADDR : RTM_NEWADDR,
+ /*flags:*/
+ cmd == 0 ? NLM_F_CREATE|NLM_F_EXCL : /* add */
+ cmd == 1 || cmd == 2 ? NLM_F_REPLACE : /* change */
+ cmd == 3 ? NLM_F_CREATE|NLM_F_REPLACE : /* replace */
+ 0 /* delete */
+ , argv);
+ }
}
- /* 2 == list, 3 == show, 4 == lst */
- return ipaddr_list_or_flush(argv, cmd == 5);
+ return ipaddr_list_or_flush(argv, cmd == 8);
}
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