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authorGlenn L McGrath2003-01-13 21:40:38 +0000
committerGlenn L McGrath2003-01-13 21:40:38 +0000
commitd66370cd7329d7d1022644c0a8213147adf8e016 (patch)
treef1a7c4ebd489ebeb90f63ed87ef671ec22e061eb /networking/libiproute/ipaddress.c
parent4e486a5d00830990cdfda68eb5dceefab43635f5 (diff)
downloadbusybox-d66370cd7329d7d1022644c0a8213147adf8e016.zip
busybox-d66370cd7329d7d1022644c0a8213147adf8e016.tar.gz
Option to allow ifupdown use ip commands instead of ifconfig, add flush
command to ipaddr, patch by Bastian Blank
Diffstat (limited to 'networking/libiproute/ipaddress.c')
-rw-r--r--networking/libiproute/ipaddress.c83
1 files changed, 80 insertions, 3 deletions
diff --git a/networking/libiproute/ipaddress.c b/networking/libiproute/ipaddress.c
index 2821f2e..77368fb 100644
--- a/networking/libiproute/ipaddress.c
+++ b/networking/libiproute/ipaddress.c
@@ -42,6 +42,10 @@ static struct
int flags, flagmask;
int up;
char *label;
+ int flushed;
+ char *flushb;
+ int flushp;
+ int flushe;
struct rtnl_handle *rth;
} filter;
@@ -191,6 +195,16 @@ static int print_linkinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
return 0;
}
+static int flush_update(void)
+{
+ if (rtnl_send(filter.rth, filter.flushb, filter.flushp) < 0) {
+ perror("Failed to send flush request\n");
+ return -1;
+ }
+ filter.flushp = 0;
+ return 0;
+}
+
static int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
{
FILE *fp = (FILE*)arg;
@@ -208,6 +222,9 @@ static int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
return -1;
}
+ if (filter.flushb && n->nlmsg_type != RTM_NEWADDR)
+ return 0;
+
memset(rta_tb, 0, sizeof(rta_tb));
parse_rtattr(rta_tb, IFA_MAX, IFA_RTA(ifa), n->nlmsg_len - NLMSG_LENGTH(sizeof(*ifa)));
@@ -242,6 +259,22 @@ static int print_addrinfo(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
}
}
+ if (filter.flushb) {
+ struct nlmsghdr *fn;
+ if (NLMSG_ALIGN(filter.flushp) + n->nlmsg_len > filter.flushe) {
+ if (flush_update())
+ return -1;
+ }
+ fn = (struct nlmsghdr*)(filter.flushb + NLMSG_ALIGN(filter.flushp));
+ memcpy(fn, n, n->nlmsg_len);
+ fn->nlmsg_type = RTM_DELADDR;
+ fn->nlmsg_flags = NLM_F_REQUEST;
+ fn->nlmsg_seq = ++filter.rth->seq;
+ filter.flushp = (((char*)fn) + n->nlmsg_len) - filter.flushb;
+ filter.flushed++;
+ return 0;
+ }
+
if (n->nlmsg_type == RTM_DELADDR)
fprintf(fp, "Deleted ");
@@ -382,7 +415,7 @@ static void ipaddr_reset_filter(int _oneline)
filter.oneline = _oneline;
}
-extern int ipaddr_list(int argc, char **argv)
+extern int ipaddr_list_or_flush(int argc, char **argv, int flush)
{
const char *option[] = { "to", "scope", "up", "label", "dev", 0 };
struct nlmsg_list *linfo = NULL;
@@ -398,6 +431,17 @@ extern int ipaddr_list(int argc, char **argv)
if (filter.family == AF_UNSPEC)
filter.family = preferred_family;
+ if (flush) {
+ if (argc <= 0) {
+ fprintf(stderr, "Flush requires arguments.\n");
+ return -1;
+ }
+ if (filter.family == AF_PACKET) {
+ fprintf(stderr, "Cannot flush link addresses.\n");
+ return -1;
+ }
+ }
+
while (argc > 0) {
const unsigned short option_num = compare_string_array(option, *argv);
switch (option_num) {
@@ -461,6 +505,37 @@ extern int ipaddr_list(int argc, char **argv)
}
}
+ if (flush) {
+ int round = 0;
+ char flushb[4096-512];
+
+ filter.flushb = flushb;
+ filter.flushp = 0;
+ filter.flushe = sizeof(flushb);
+ filter.rth = &rth;
+
+ for (;;) {
+ if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
+ perror("Cannot send dump request");
+ exit(1);
+ }
+ filter.flushed = 0;
+ if (rtnl_dump_filter(&rth, print_addrinfo, stdout, NULL, NULL) < 0) {
+ fprintf(stderr, "Flush terminated\n");
+ exit(1);
+ }
+ if (filter.flushed == 0) {
+ if (round == 0)
+ fprintf(stderr, "Nothing to flush.\n");
+ fflush(stdout);
+ return 0;
+ }
+ round++;
+ if (flush_update() < 0)
+ exit(1);
+ }
+ }
+
if (filter.family != AF_PACKET) {
if (rtnl_wilddump_request(&rth, filter.family, RTM_GETADDR) < 0) {
perror_msg_and_die("Cannot send dump request");
@@ -727,7 +802,7 @@ static int ipaddr_modify(int cmd, int argc, char **argv)
extern int do_ipaddr(int argc, char **argv)
{
- const char *commands[] = { "add", "delete", "list", "show", "lst", 0 };
+ const char *commands[] = { "add", "delete", "list", "show", "lst", "flush", 0 };
unsigned short command_num = 2;
if (*argv) {
@@ -741,7 +816,9 @@ extern int do_ipaddr(int argc, char **argv)
case 2: /* list */
case 3: /* show */
case 4: /* lst */
- return ipaddr_list(argc-1, argv+1);
+ return ipaddr_list_or_flush(argc-1, argv+1, 0);
+ case 5: /* flush */
+ return ipaddr_list_or_flush(argc-1, argv+1, 1);
}
error_msg_and_die("Unknown command %s", *argv);
}