diff options
| -rw-r--r-- | include/utils.h | 1 | ||||
| -rw-r--r-- | ip/ipaddress.c | 20 | ||||
| -rw-r--r-- | ip/iplink.c | 81 | ||||
| -rw-r--r-- | lib/utils.c | 19 | ||||
| -rw-r--r-- | man/man8/ip-link.8.in | 11 |
5 files changed, 124 insertions, 8 deletions
diff --git a/include/utils.h b/include/utils.h index 794d3605..001491a1 100644 --- a/include/utils.h +++ b/include/utils.h @@ -196,6 +196,7 @@ void duparg(const char *, const char *) __attribute__((noreturn)); void duparg2(const char *, const char *) __attribute__((noreturn)); int nodev(const char *dev); int check_ifname(const char *); +int check_altifname(const char *name); int get_ifname(char *, const char *); const char *get_ifname_rta(int ifindex, const struct rtattr *rta); bool matches(const char *prefix, const char *string); diff --git a/ip/ipaddress.c b/ip/ipaddress.c index bc8f5ba1..b72eb7a1 100644 --- a/ip/ipaddress.c +++ b/ip/ipaddress.c @@ -879,7 +879,7 @@ int print_linkinfo(struct nlmsghdr *n, void *arg) if (filter.up && !(ifi->ifi_flags&IFF_UP)) return -1; - parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); + parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, NLA_F_NESTED); name = get_ifname_rta(ifi->ifi_index, tb[IFLA_IFNAME]); if (!name) @@ -1139,7 +1139,23 @@ int print_linkinfo(struct nlmsghdr *n, void *arg) close_json_array(PRINT_JSON, NULL); } - print_string(PRINT_FP, NULL, "%s", "\n"); + if (tb[IFLA_PROP_LIST]) { + struct rtattr *i, *proplist = tb[IFLA_PROP_LIST]; + int rem = RTA_PAYLOAD(proplist); + + open_json_array(PRINT_JSON, "altnames"); + for (i = RTA_DATA(proplist); RTA_OK(i, rem); + i = RTA_NEXT(i, rem)) { + if (i->rta_type != IFLA_ALT_IFNAME) + continue; + print_string(PRINT_FP, NULL, "%s altname ", _SL_); + print_string(PRINT_ANY, NULL, + "%s", rta_getattr_str(i)); + } + close_json_array(PRINT_JSON, NULL); + } + + print_string(PRINT_FP, NULL, "%s", _SL_); fflush(fp); return 1; } diff --git a/ip/iplink.c b/ip/iplink.c index 212a0885..bf90fad1 100644 --- a/ip/iplink.c +++ b/ip/iplink.c @@ -111,7 +111,9 @@ void iplink_usage(void) "\n" " ip link xstats type TYPE [ ARGS ]\n" "\n" - " ip link afstats [ dev DEVICE ]\n"); + " ip link afstats [ dev DEVICE ]\n" + " ip link property add dev DEVICE [ altname NAME .. ]\n" + " ip link property del dev DEVICE [ altname NAME .. ]\n"); if (iplink_have_newlink()) { fprintf(stderr, @@ -1617,6 +1619,80 @@ static int iplink_afstats(int argc, char **argv) return 0; } +static int iplink_prop_mod(int argc, char **argv, struct iplink_req *req) +{ + struct rtattr *proplist; + char *dev = NULL; + char *name; + + proplist = addattr_nest(&req->n, sizeof(*req), + IFLA_PROP_LIST | NLA_F_NESTED); + + while (argc > 0) { + if (matches(*argv, "altname") == 0) { + NEXT_ARG(); + if (check_altifname(*argv)) + invarg("not a valid altname", *argv); + name = *argv; + addattr_l(&req->n, sizeof(*req), IFLA_ALT_IFNAME, + name, strlen(name) + 1); + } else if (matches(*argv, "help") == 0) { + usage(); + } else { + if (strcmp(*argv, "dev") == 0) + NEXT_ARG(); + if (dev) + duparg2("dev", *argv); + if (check_altifname(*argv)) + invarg("\"dev\" not a valid ifname", *argv); + dev = *argv; + } + argv++; argc--; + } + addattr_nest_end(&req->n, proplist); + + if (!dev) { + fprintf(stderr, "Not enough of information: \"dev\" argument is required.\n"); + exit(-1); + } + + req->i.ifi_index = ll_name_to_index(dev); + if (!req->i.ifi_index) + return nodev(dev); + + if (rtnl_talk(&rth, &req->n, NULL) < 0) + return -2; + + return 0; +} + +static int iplink_prop(int argc, char **argv) +{ + struct iplink_req req = { + .n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)), + .n.nlmsg_flags = NLM_F_REQUEST, + .i.ifi_family = preferred_family, + }; + + if (argc <= 0) { + usage(); + exit(-1); + } + + if (matches(*argv, "add") == 0) { + req.n.nlmsg_flags |= NLM_F_EXCL | NLM_F_CREATE | NLM_F_APPEND; + req.n.nlmsg_type = RTM_NEWLINKPROP; + } else if (matches(*argv, "del") == 0) { + req.n.nlmsg_type = RTM_DELLINKPROP; + } else if (matches(*argv, "help") == 0) { + usage(); + } else { + fprintf(stderr, "Operator required\n"); + exit(-1); + } + return iplink_prop_mod(argc - 1, argv + 1, &req); +} + static void do_help(int argc, char **argv) { struct link_util *lu = NULL; @@ -1674,6 +1750,9 @@ int do_iplink(int argc, char **argv) return 0; } + if (matches(*argv, "property") == 0) + return iplink_prop(argc-1, argv+1); + if (matches(*argv, "help") == 0) { do_help(argc-1, argv+1); return 0; diff --git a/lib/utils.c b/lib/utils.c index 95d46ff2..bbb3bdcf 100644 --- a/lib/utils.c +++ b/lib/utils.c @@ -824,14 +824,10 @@ int nodev(const char *dev) return -1; } -int check_ifname(const char *name) +static int __check_ifname(const char *name) { - /* These checks mimic kernel checks in dev_valid_name */ if (*name == '\0') return -1; - if (strlen(name) >= IFNAMSIZ) - return -1; - while (*name) { if (*name == '/' || isspace(*name)) return -1; @@ -840,6 +836,19 @@ int check_ifname(const char *name) return 0; } +int check_ifname(const char *name) +{ + /* These checks mimic kernel checks in dev_valid_name */ + if (strlen(name) >= IFNAMSIZ) + return -1; + return __check_ifname(name); +} + +int check_altifname(const char *name) +{ + return __check_ifname(name); +} + /* buf is assumed to be IFNAMSIZ */ int get_ifname(char *buf, const char *name) { diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in index 31051c52..9629a649 100644 --- a/man/man8/ip-link.8.in +++ b/man/man8/ip-link.8.in @@ -244,6 +244,17 @@ ip-link \- network device configuration .IR VLAN-QOS " ] [" .B proto .IR VLAN-PROTO " ] ]" +.in -8 + +.ti -8 +.BI "ip link property add" +.RB "[ " altname +.IR NAME " .. ]" + +.ti -8 +.BI "ip link property del" +.RB "[ " altname +.IR NAME " .. ]" .SH "DESCRIPTION" .SS ip link add - add virtual link |