iplink_parse() routine
This routine parses CLI attributes, describing generic link parameters such as name, address, etc. This is mostly copy-pasted from iplink_modify(). Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
This commit is contained in:
Pavel Emelyanov
Stephen Hemminger
parent
d84914a0c5
commit
909dfe2c7e
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@ -147,4 +147,7 @@ extern int cmdlineno;
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extern ssize_t getcmdline(char **line, size_t *len, FILE *in);
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extern int makeargs(char *line, char *argv[], int maxargs);
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struct iplink_req;
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int iplink_parse(int argc, char **argv, struct iplink_req *req,
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char **name, char **type, char **link, char **dev);
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#endif /* __UTILS_H__ */
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251
ip/iplink.c
251
ip/iplink.c
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@ -143,22 +143,145 @@ static int iplink_have_newlink(void)
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}
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#endif /* ! IPLINK_IOCTL_COMPAT */
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static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
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struct iplink_req {
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struct nlmsghdr n;
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struct ifinfomsg i;
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char buf[1024];
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};
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int iplink_parse(int argc, char **argv, struct iplink_req *req,
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char **name, char **type, char **link, char **dev)
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{
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int ret, len;
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char abuf[32];
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int qlen = -1;
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int mtu = -1;
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ret = argc;
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while (argc > 0) {
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if (strcmp(*argv, "up") == 0) {
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req->i.ifi_change |= IFF_UP;
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req->i.ifi_flags |= IFF_UP;
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} else if (strcmp(*argv, "down") == 0) {
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req->i.ifi_change |= IFF_UP;
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req->i.ifi_flags &= ~IFF_UP;
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} else if (strcmp(*argv, "name") == 0) {
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NEXT_ARG();
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*name = *argv;
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} else if (matches(*argv, "link") == 0) {
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NEXT_ARG();
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*link = *argv;
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} else if (matches(*argv, "address") == 0) {
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NEXT_ARG();
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len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
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addattr_l(&req->n, sizeof(*req), IFLA_ADDRESS, abuf, len);
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} else if (matches(*argv, "broadcast") == 0 ||
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strcmp(*argv, "brd") == 0) {
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NEXT_ARG();
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len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
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addattr_l(&req->n, sizeof(*req), IFLA_BROADCAST, abuf, len);
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} else if (matches(*argv, "txqueuelen") == 0 ||
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strcmp(*argv, "qlen") == 0 ||
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matches(*argv, "txqlen") == 0) {
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NEXT_ARG();
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if (qlen != -1)
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duparg("txqueuelen", *argv);
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if (get_integer(&qlen, *argv, 0))
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invarg("Invalid \"txqueuelen\" value\n", *argv);
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addattr_l(&req->n, sizeof(*req), IFLA_TXQLEN, &qlen, 4);
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} else if (strcmp(*argv, "mtu") == 0) {
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NEXT_ARG();
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if (mtu != -1)
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duparg("mtu", *argv);
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if (get_integer(&mtu, *argv, 0))
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invarg("Invalid \"mtu\" value\n", *argv);
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addattr_l(&req->n, sizeof(*req), IFLA_MTU, &mtu, 4);
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} else if (strcmp(*argv, "multicast") == 0) {
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NEXT_ARG();
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req->i.ifi_change |= IFF_MULTICAST;
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if (strcmp(*argv, "on") == 0) {
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req->i.ifi_flags |= IFF_MULTICAST;
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} else if (strcmp(*argv, "off") == 0) {
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req->i.ifi_flags &= ~IFF_MULTICAST;
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} else
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return on_off("multicast");
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} else if (strcmp(*argv, "allmulticast") == 0) {
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NEXT_ARG();
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req->i.ifi_change |= IFF_ALLMULTI;
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if (strcmp(*argv, "on") == 0) {
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req->i.ifi_flags |= IFF_ALLMULTI;
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} else if (strcmp(*argv, "off") == 0) {
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req->i.ifi_flags &= ~IFF_ALLMULTI;
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} else
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return on_off("allmulticast");
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} else if (strcmp(*argv, "promisc") == 0) {
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NEXT_ARG();
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req->i.ifi_change |= IFF_PROMISC;
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if (strcmp(*argv, "on") == 0) {
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req->i.ifi_flags |= IFF_PROMISC;
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} else if (strcmp(*argv, "off") == 0) {
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req->i.ifi_flags &= ~IFF_PROMISC;
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} else
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return on_off("promisc");
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} else if (strcmp(*argv, "trailers") == 0) {
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NEXT_ARG();
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req->i.ifi_change |= IFF_NOTRAILERS;
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if (strcmp(*argv, "off") == 0) {
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req->i.ifi_flags |= IFF_NOTRAILERS;
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} else if (strcmp(*argv, "on") == 0) {
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req->i.ifi_flags &= ~IFF_NOTRAILERS;
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} else
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return on_off("trailers");
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} else if (strcmp(*argv, "arp") == 0) {
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NEXT_ARG();
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req->i.ifi_change |= IFF_NOARP;
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if (strcmp(*argv, "on") == 0) {
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req->i.ifi_flags &= ~IFF_NOARP;
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} else if (strcmp(*argv, "off") == 0) {
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req->i.ifi_flags |= IFF_NOARP;
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} else
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return on_off("noarp");
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#ifdef IFF_DYNAMIC
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} else if (matches(*argv, "dynamic") == 0) {
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NEXT_ARG();
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req->i.ifi_change |= IFF_DYNAMIC;
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if (strcmp(*argv, "on") == 0) {
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req->i.ifi_flags |= IFF_DYNAMIC;
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} else if (strcmp(*argv, "off") == 0) {
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req->i.ifi_flags &= ~IFF_DYNAMIC;
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} else
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return on_off("dynamic");
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#endif
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} else if (matches(*argv, "type") == 0) {
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NEXT_ARG();
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*type = *argv;
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argc--; argv++;
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break;
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} else {
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if (strcmp(*argv, "dev") == 0) {
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NEXT_ARG();
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}
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if (*dev)
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duparg2("dev", *argv);
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*dev = *argv;
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}
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argc--; argv++;
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}
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return ret - argc;
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}
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static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
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{
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int len;
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char abuf[32];
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char *dev = NULL;
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char *name = NULL;
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char *link = NULL;
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char *type = NULL;
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struct link_util *lu = NULL;
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struct {
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struct nlmsghdr n;
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struct ifinfomsg i;
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char buf[1024];
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} req;
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struct iplink_req req;
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int ret;
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memset(&req, 0, sizeof(req));
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@ -167,116 +290,12 @@ static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
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req.n.nlmsg_type = cmd;
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req.i.ifi_family = preferred_family;
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while (argc > 0) {
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if (strcmp(*argv, "up") == 0) {
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req.i.ifi_change |= IFF_UP;
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req.i.ifi_flags |= IFF_UP;
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} else if (strcmp(*argv, "down") == 0) {
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req.i.ifi_change |= IFF_UP;
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req.i.ifi_flags &= ~IFF_UP;
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} else if (strcmp(*argv, "name") == 0) {
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NEXT_ARG();
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name = *argv;
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} else if (matches(*argv, "link") == 0) {
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NEXT_ARG();
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link = *argv;
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} else if (matches(*argv, "address") == 0) {
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NEXT_ARG();
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len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
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addattr_l(&req.n, sizeof(req), IFLA_ADDRESS, abuf, len);
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} else if (matches(*argv, "broadcast") == 0 ||
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strcmp(*argv, "brd") == 0) {
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NEXT_ARG();
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len = ll_addr_a2n(abuf, sizeof(abuf), *argv);
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addattr_l(&req.n, sizeof(req), IFLA_BROADCAST, abuf, len);
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} else if (matches(*argv, "txqueuelen") == 0 ||
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strcmp(*argv, "qlen") == 0 ||
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matches(*argv, "txqlen") == 0) {
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NEXT_ARG();
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if (qlen != -1)
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duparg("txqueuelen", *argv);
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if (get_integer(&qlen, *argv, 0))
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invarg("Invalid \"txqueuelen\" value\n", *argv);
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addattr_l(&req.n, sizeof(req), IFLA_TXQLEN, &qlen, 4);
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} else if (strcmp(*argv, "mtu") == 0) {
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NEXT_ARG();
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if (mtu != -1)
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duparg("mtu", *argv);
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if (get_integer(&mtu, *argv, 0))
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invarg("Invalid \"mtu\" value\n", *argv);
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addattr_l(&req.n, sizeof(req), IFLA_MTU, &mtu, 4);
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} else if (strcmp(*argv, "multicast") == 0) {
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NEXT_ARG();
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req.i.ifi_change |= IFF_MULTICAST;
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if (strcmp(*argv, "on") == 0) {
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req.i.ifi_flags |= IFF_MULTICAST;
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} else if (strcmp(*argv, "off") == 0) {
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req.i.ifi_flags &= ~IFF_MULTICAST;
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} else
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return on_off("multicast");
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} else if (strcmp(*argv, "allmulticast") == 0) {
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NEXT_ARG();
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req.i.ifi_change |= IFF_ALLMULTI;
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if (strcmp(*argv, "on") == 0) {
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req.i.ifi_flags |= IFF_ALLMULTI;
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} else if (strcmp(*argv, "off") == 0) {
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req.i.ifi_flags &= ~IFF_ALLMULTI;
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} else
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return on_off("allmulticast");
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} else if (strcmp(*argv, "promisc") == 0) {
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NEXT_ARG();
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req.i.ifi_change |= IFF_PROMISC;
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if (strcmp(*argv, "on") == 0) {
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req.i.ifi_flags |= IFF_PROMISC;
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} else if (strcmp(*argv, "off") == 0) {
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req.i.ifi_flags &= ~IFF_PROMISC;
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} else
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return on_off("promisc");
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} else if (strcmp(*argv, "trailers") == 0) {
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NEXT_ARG();
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req.i.ifi_change |= IFF_NOTRAILERS;
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if (strcmp(*argv, "off") == 0) {
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req.i.ifi_flags |= IFF_NOTRAILERS;
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} else if (strcmp(*argv, "on") == 0) {
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req.i.ifi_flags &= ~IFF_NOTRAILERS;
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} else
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return on_off("trailers");
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} else if (strcmp(*argv, "arp") == 0) {
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NEXT_ARG();
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req.i.ifi_change |= IFF_NOARP;
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if (strcmp(*argv, "on") == 0) {
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req.i.ifi_flags &= ~IFF_NOARP;
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} else if (strcmp(*argv, "off") == 0) {
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req.i.ifi_flags |= IFF_NOARP;
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} else
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return on_off("noarp");
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#ifdef IFF_DYNAMIC
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} else if (matches(*argv, "dynamic") == 0) {
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NEXT_ARG();
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req.i.ifi_change |= IFF_DYNAMIC;
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if (strcmp(*argv, "on") == 0) {
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req.i.ifi_flags |= IFF_DYNAMIC;
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} else if (strcmp(*argv, "off") == 0) {
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req.i.ifi_flags &= ~IFF_DYNAMIC;
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} else
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return on_off("dynamic");
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#endif
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} else if (matches(*argv, "type") == 0) {
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NEXT_ARG();
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type = *argv;
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argc--; argv++;
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break;
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} else {
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if (strcmp(*argv, "dev") == 0) {
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NEXT_ARG();
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}
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if (dev)
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duparg2("dev", *argv);
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dev = *argv;
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}
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argc--; argv++;
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}
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ret = iplink_parse(argc, argv, &req, &name, &type, &link, &dev);
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if (ret < 0)
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return ret;
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argc -= ret;
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argv += ret;
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ll_init_map(&rth);
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if (type) {
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