From 927632d4da72bb0e2e9837975663d723082fb63e Mon Sep 17 00:00:00 2001 From: Thomas Haller Date: Tue, 23 Apr 2019 09:16:14 +0200 Subject: [PATCH] iprule: refactor print_rule() to use leading space before printing attribute When printing the actions, we avoid adding the trailing space after the attribute. Possibly because we expect the action to be the last output on the line and not end with a space. But for FR_ACT_TO_TBL nothing is printed. That means, we add double spaces if a protocol is printed as well: # ip rule add priority 10 protocol 10 type 1 will be printed as 10: from all lookup 1 proto mrt The only visible effect of the patch is to avoid the double-space and avoid a trailing space if the action is FR_ACT_TO_TBL. Signed-off-by: Thomas Haller Signed-off-by: Stephen Hemminger --- ip/iprule.c | 84 ++++++++++++++++++++++++++--------------------------- 1 file changed, 41 insertions(+), 43 deletions(-) diff --git a/ip/iprule.c b/ip/iprule.c index ce6b7cd34..b00ca7d16 100644 --- a/ip/iprule.c +++ b/ip/iprule.c @@ -273,34 +273,30 @@ int print_rule(struct nlmsghdr *n, void *arg) print_color_string(PRINT_ANY, ifa_family_color(frh->family), "src", "%s", src); if (frh->src_len != host_len) - print_uint(PRINT_ANY, "srclen", "/%u ", frh->src_len); - else - print_string(PRINT_FP, NULL, " ", NULL); + print_uint(PRINT_ANY, "srclen", "/%u", frh->src_len); } else if (frh->src_len) { print_string(PRINT_ANY, "src", "from %s", "0"); - print_uint(PRINT_ANY, "srclen", "/%u ", frh->src_len); + print_uint(PRINT_ANY, "srclen", "/%u", frh->src_len); } else { - print_string(PRINT_ANY, "src", "from %s ", "all"); + print_string(PRINT_ANY, "src", "from %s", "all"); } if (tb[FRA_DST]) { const char *dst = rt_addr_n2a_rta(frh->family, tb[FRA_DST]); - print_string(PRINT_FP, NULL, "to ", NULL); + print_string(PRINT_FP, NULL, " to ", NULL); print_color_string(PRINT_ANY, ifa_family_color(frh->family), "dst", "%s", dst); if (frh->dst_len != host_len) - print_uint(PRINT_ANY, "dstlen", "/%u ", frh->dst_len); - else - print_string(PRINT_FP, NULL, " ", NULL); + print_uint(PRINT_ANY, "dstlen", "/%u", frh->dst_len); } else if (frh->dst_len) { - print_string(PRINT_ANY, "dst", "to %s", "0"); - print_uint(PRINT_ANY, "dstlen", "/%u ", frh->dst_len); + print_string(PRINT_ANY, "dst", " to %s", "0"); + print_uint(PRINT_ANY, "dstlen", "/%u", frh->dst_len); } if (frh->tos) { print_string(PRINT_ANY, "tos", - "tos %s ", + " tos %s", rtnl_dsfield_n2a(frh->tos, b1, sizeof(b1))); } @@ -312,34 +308,34 @@ int print_rule(struct nlmsghdr *n, void *arg) if (tb[FRA_FWMASK] && (mask = rta_getattr_u32(tb[FRA_FWMASK])) != 0xFFFFFFFF) { - print_0xhex(PRINT_ANY, "fwmark", "fwmark %#llx", mark); - print_0xhex(PRINT_ANY, "fwmask", "/%#llx ", mask); + print_0xhex(PRINT_ANY, "fwmark", " fwmark %#llx", mark); + print_0xhex(PRINT_ANY, "fwmask", "/%#llx", mask); } else { - print_0xhex(PRINT_ANY, "fwmark", "fwmark %#llx ", mark); + print_0xhex(PRINT_ANY, "fwmark", " fwmark %#llx", mark); } } if (tb[FRA_IFNAME]) { if (!is_json_context()) - fprintf(fp, "iif "); + fprintf(fp, " iif "); print_color_string(PRINT_ANY, COLOR_IFNAME, - "iif", "%s ", + "iif", "%s", rta_getattr_str(tb[FRA_IFNAME])); if (frh->flags & FIB_RULE_IIF_DETACHED) - print_null(PRINT_ANY, "iif_detached", "[detached] ", + print_null(PRINT_ANY, "iif_detached", " [detached]", NULL); } if (tb[FRA_OIFNAME]) { if (!is_json_context()) - fprintf(fp, "oif "); + fprintf(fp, " oif "); - print_color_string(PRINT_ANY, COLOR_IFNAME, "oif", "%s ", + print_color_string(PRINT_ANY, COLOR_IFNAME, "oif", "%s", rta_getattr_str(tb[FRA_OIFNAME])); if (frh->flags & FIB_RULE_OIF_DETACHED) - print_null(PRINT_ANY, "oif_detached", "[detached] ", + print_null(PRINT_ANY, "oif_detached", " [detached]", NULL); } @@ -348,19 +344,19 @@ int print_rule(struct nlmsghdr *n, void *arg) if (mdev) print_null(PRINT_ANY, "l3mdev", - "lookup [l3mdev-table] ", NULL); + " lookup [l3mdev-table]", NULL); } if (tb[FRA_UID_RANGE]) { struct fib_rule_uid_range *r = RTA_DATA(tb[FRA_UID_RANGE]); - print_uint(PRINT_ANY, "uid_start", "uidrange %u", r->start); - print_uint(PRINT_ANY, "uid_end", "-%u ", r->end); + print_uint(PRINT_ANY, "uid_start", " uidrange %u", r->start); + print_uint(PRINT_ANY, "uid_end", "-%u", r->end); } if (tb[FRA_IP_PROTO]) { SPRINT_BUF(pbuf); - print_string(PRINT_ANY, "ipproto", "ipproto %s ", + print_string(PRINT_ANY, "ipproto", " ipproto %s", inet_proto_n2a(rta_getattr_u8(tb[FRA_IP_PROTO]), pbuf, sizeof(pbuf))); } @@ -369,11 +365,11 @@ int print_rule(struct nlmsghdr *n, void *arg) struct fib_rule_port_range *r = RTA_DATA(tb[FRA_SPORT_RANGE]); if (r->start == r->end) { - print_uint(PRINT_ANY, "sport", "sport %u ", r->start); + print_uint(PRINT_ANY, "sport", " sport %u", r->start); } else { - print_uint(PRINT_ANY, "sport_start", "sport %u", + print_uint(PRINT_ANY, "sport_start", " sport %u", r->start); - print_uint(PRINT_ANY, "sport_end", "-%u ", r->end); + print_uint(PRINT_ANY, "sport_end", "-%u", r->end); } } @@ -381,24 +377,24 @@ int print_rule(struct nlmsghdr *n, void *arg) struct fib_rule_port_range *r = RTA_DATA(tb[FRA_DPORT_RANGE]); if (r->start == r->end) { - print_uint(PRINT_ANY, "dport", "dport %u ", r->start); + print_uint(PRINT_ANY, "dport", " dport %u", r->start); } else { - print_uint(PRINT_ANY, "dport_start", "dport %u", + print_uint(PRINT_ANY, "dport_start", " dport %u", r->start); - print_uint(PRINT_ANY, "dport_end", "-%u ", r->end); + print_uint(PRINT_ANY, "dport_end", "-%u", r->end); } } if (tb[FRA_TUN_ID]) { __u64 tun_id = ntohll(rta_getattr_u64(tb[FRA_TUN_ID])); - print_u64(PRINT_ANY, "tun_id", "tun_id %llu ", tun_id); + print_u64(PRINT_ANY, "tun_id", " tun_id %llu", tun_id); } table = frh_get_table(frh, tb); if (table) { print_string(PRINT_ANY, "table", - "lookup %s ", + " lookup %s", rtnl_rttable_n2a(table, b1, sizeof(b1))); if (tb[FRA_SUPPRESS_PREFIXLEN]) { @@ -406,7 +402,7 @@ int print_rule(struct nlmsghdr *n, void *arg) if (pl != -1) print_int(PRINT_ANY, "suppress_prefixlen", - "suppress_prefixlength %d ", pl); + " suppress_prefixlength %d", pl); } if (tb[FRA_SUPPRESS_IFGROUP]) { @@ -417,7 +413,7 @@ int print_rule(struct nlmsghdr *n, void *arg) = rtnl_group_n2a(group, b1, sizeof(b1)); print_string(PRINT_ANY, "suppress_ifgroup", - "suppress_ifgroup %s ", grname); + " suppress_ifgroup %s", grname); } } } @@ -429,10 +425,12 @@ int print_rule(struct nlmsghdr *n, void *arg) to &= 0xFFFF; if (from) print_string(PRINT_ANY, - "flow_from", "realms %s/", + "flow_from", " realms %s/", rtnl_rtrealm_n2a(from, b1, sizeof(b1))); + else + print_string(PRINT_FP, NULL, " ", NULL); - print_string(PRINT_ANY, "flow_to", "%s ", + print_string(PRINT_ANY, "flow_to", "%s", rtnl_rtrealm_n2a(to, b1, sizeof(b1))); } @@ -443,24 +441,24 @@ int print_rule(struct nlmsghdr *n, void *arg) gateway = format_host_rta(frh->family, tb[RTA_GATEWAY]); print_string(PRINT_ANY, "nat_gateway", - "map-to %s", gateway); + " map-to %s", gateway); } else { - print_null(PRINT_ANY, "masquerade", "masquerade", NULL); + print_null(PRINT_ANY, "masquerade", " masquerade", NULL); } } else if (frh->action == FR_ACT_GOTO) { if (tb[FRA_GOTO]) - print_uint(PRINT_ANY, "goto", "goto %u", + print_uint(PRINT_ANY, "goto", " goto %u", rta_getattr_u32(tb[FRA_GOTO])); else - print_string(PRINT_ANY, "goto", "goto %s", "none"); + print_string(PRINT_ANY, "goto", " goto %s", "none"); if (frh->flags & FIB_RULE_UNRESOLVED) print_null(PRINT_ANY, "unresolved", " [unresolved]", NULL); } else if (frh->action == FR_ACT_NOP) { - print_null(PRINT_ANY, "nop", "nop", NULL); + print_null(PRINT_ANY, "nop", " nop", NULL); } else if (frh->action != FR_ACT_TO_TBL) { - print_string(PRINT_ANY, "action", "%s", + print_string(PRINT_ANY, "action", " %s", rtnl_rtntype_n2a(frh->action, b1, sizeof(b1))); } -- 2.47.2