platform: reimplement netlink flags/enum to string conversions

src/platform/nm-linux-platform.c

@@ -3611,7 +3611,7 @@ link_change_flags (NMPlatform *platform, int ifindex, unsigned int flags, gboole
 
 	_LOGD ("link: change %d: flags %s '%s' (%d)", ifindex,
 	       value ? "set" : "unset",
-	       rtnl_link_flags2str (flags, buf, sizeof (buf)),
+	       nm_platform_link_flags2str (flags, buf, sizeof (buf)),
 	       flags);
 
 	return do_change_link (platform, change, FALSE);
@@ -3683,7 +3683,7 @@ link_set_user_ipv6ll_enabled (NMPlatform *platform, int ifindex, gboolean enable
 
 		rtnl_link_inet6_set_addr_gen_mode (nlo, mode);
 		_LOGD ("link: change %d: set IPv6 address generation mode to %s",
-		       ifindex, rtnl_link_inet6_addrgenmode2str (mode, buf, sizeof (buf)));
+		       ifindex, nm_platform_link_inet6_addrgenmode2str (mode, buf, sizeof (buf)));
 		return do_change_link (platform, nlo, TRUE) == NM_PLATFORM_ERROR_SUCCESS;
 	}
 #endif

src/platform/nm-platform.c

@@ -2514,7 +2514,7 @@ nm_platform_link_to_string (const NMPlatformLink *link, char *buf, gsize len)
 	if (link->flags) {
 		char str_flags_buf[64];
 
-		rtnl_link_flags2str (link->flags, str_flags_buf, sizeof (str_flags_buf));
+		nm_platform_link_flags2str (link->flags, str_flags_buf, sizeof (str_flags_buf));
 		g_string_append_printf (str_flags, ";%s", str_flags_buf);
 	}
 
@@ -2828,47 +2828,95 @@ nm_platform_ip4_address_to_string (const NMPlatformIP4Address *address, char *bu
 	return buf;
 }
 
-/**
+const char *
- * nm_platform_addr_flags2str: wrapper for rtnl_addr_flags2str(),
+nm_platform_link_flags2str (unsigned flags, char *buf, gsize len)
- * which might not yet support some recent address flags.
- **/
-void
-nm_platform_addr_flags2str (int flags, char *buf, size_t size)
 {
-	if (   !NM_FLAGS_ANY (flags, IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE)
+	static const NMUtilsFlags2StrDesc descs[] = {
-	    || nm_platform_check_support_libnl_extended_ifa_flags ())
+		NM_UTILS_FLAGS2STR (IFF_LOOPBACK, "loopback"),
-		rtnl_addr_flags2str (flags, buf, size);
+		NM_UTILS_FLAGS2STR (IFF_BROADCAST, "broadcast"),
-	else {
+		NM_UTILS_FLAGS2STR (IFF_POINTOPOINT, "pointopoint"),
-		/* There are two recent flags IFA_F_MANAGETEMPADDR and IFA_F_NOPREFIXROUTE.
+		NM_UTILS_FLAGS2STR (IFF_MULTICAST, "multicast"),
-		 * If libnl does not yet support them, add them by hand.
+		NM_UTILS_FLAGS2STR (IFF_NOARP, "noarp"),
-		 * These two flags were introduced together with the extended ifa_flags
+		NM_UTILS_FLAGS2STR (IFF_ALLMULTI, "allmulti"),
-		 * so check for nm_platform_check_support_libnl_extended_ifa_flags (). */
+		NM_UTILS_FLAGS2STR (IFF_PROMISC, "promisc"),
-		gboolean has_other_unknown_flags = FALSE;
+		NM_UTILS_FLAGS2STR (IFF_MASTER, "master"),
-		size_t len;
+		NM_UTILS_FLAGS2STR (IFF_SLAVE, "slave"),
+		NM_UTILS_FLAGS2STR (IFF_DEBUG, "debug"),
+		NM_UTILS_FLAGS2STR (IFF_DYNAMIC, "dynamic"),
+		NM_UTILS_FLAGS2STR (IFF_AUTOMEDIA, "automedia"),
+		NM_UTILS_FLAGS2STR (IFF_PORTSEL, "portsel"),
+		NM_UTILS_FLAGS2STR (IFF_NOTRAILERS, "notrailers"),
+		NM_UTILS_FLAGS2STR (IFF_UP, "up"),
+		NM_UTILS_FLAGS2STR (IFF_RUNNING, "running"),
+		NM_UTILS_FLAGS2STR (IFF_LOWER_UP, "lowerup"),
+		NM_UTILS_FLAGS2STR (IFF_DORMANT, "dormant"),
+		NM_UTILS_FLAGS2STR (IFF_ECHO, "echo"),
+	};
+	return nm_utils_flags2str (descs, G_N_ELEMENTS (descs), flags, buf, len);
+};
 
-		/* if there are unknown flags to rtnl_addr_flags2str(), libnl appends ','
+const char *
-		 * to indicate them. We want to keep this behavior, if there are other
+nm_platform_link_inet6_addrgenmode2str (guint8 mode, char *buf, gsize len)
-		 * unknown flags present. */
+{
+	nm_utils_to_string_buffer_init (&buf, &len);
 
-		rtnl_addr_flags2str (flags & ~(IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE), buf, size);
+	switch (mode) {
-
+	case NM_IN6_ADDR_GEN_MODE_NONE:
-		len = strlen (buf);
+		g_snprintf (buf, len, "none");
-		if (len > 0) {
+		break;
-			has_other_unknown_flags = (buf[len - 1] == ',');
+	case NM_IN6_ADDR_GEN_MODE_EUI64:
-			if (!has_other_unknown_flags)
+		g_snprintf (buf, len, "eui64");
-				g_strlcat (buf, ",", size);
+		break;
-		}
+	case NM_IN6_ADDR_GEN_MODE_STABLE_PRIVACY:
-
+		g_snprintf (buf, len, "stable-privacy");
-		if (NM_FLAGS_ALL (flags, IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE))
+		break;
-			g_strlcat (buf, IFA_F_MANAGETEMPADDR_STR","IFA_F_NOPREFIXROUTE_STR, size);
+	default:
-		else if (NM_FLAGS_HAS (flags, IFA_F_MANAGETEMPADDR))
+		g_snprintf (buf, len, "%u", (unsigned) mode);
-			g_strlcat (buf, IFA_F_MANAGETEMPADDR_STR, size);
+		break;
-		else
-			g_strlcat (buf, IFA_F_NOPREFIXROUTE_STR, size);
-
-		if (has_other_unknown_flags)
-			g_strlcat (buf, ",", size);
 	}
+	return buf;
+}
+
+const char *
+nm_platform_addr_flags2str (unsigned flags, char *buf, gsize len)
+{
+	static const NMUtilsFlags2StrDesc descs[] = {
+		NM_UTILS_FLAGS2STR (IFA_F_SECONDARY, "secondary"),
+		NM_UTILS_FLAGS2STR (IFA_F_NODAD, "nodad"),
+		NM_UTILS_FLAGS2STR (IFA_F_OPTIMISTIC, "optimistic"),
+		NM_UTILS_FLAGS2STR (IFA_F_HOMEADDRESS, "homeaddress"),
+		NM_UTILS_FLAGS2STR (IFA_F_DEPRECATED, "deprecated"),
+		NM_UTILS_FLAGS2STR (IFA_F_TENTATIVE, "tentative"),
+		NM_UTILS_FLAGS2STR (IFA_F_PERMANENT, "permanent"),
+		NM_UTILS_FLAGS2STR (IFA_F_MANAGETEMPADDR, "mngtmpaddr"),
+		NM_UTILS_FLAGS2STR (IFA_F_NOPREFIXROUTE, "noprefixroute"),
+	};
+	return nm_utils_flags2str (descs, G_N_ELEMENTS (descs), flags, buf, len);
+};
+
+const char *
+nm_platform_route_scope2str (int scope, char *buf, gsize len)
+{
+	nm_utils_to_string_buffer_init (&buf, &len);
+
+	switch (scope) {
+	case 255:
+		g_snprintf (buf, len, "nowhere");
+		break;
+	case 254:
+		g_snprintf (buf, len, "host");
+		break;
+	case 200:
+		g_snprintf (buf, len, "site");
+		break;
+	case 0:
+		g_snprintf (buf, len, "global");
+		break;
+	default:
+		g_snprintf (buf, len, "%d", scope);
+		break;
+	}
+	return buf;
 }
 
 /**
@@ -2980,7 +3028,7 @@ nm_platform_ip4_route_to_string (const NMPlatformIP4Route *route, char *buf, gsi
 	            route->mss,
 	            source_to_string (route->source),
 	            route->scope_inv ? " scope " : "",
-	            route->scope_inv ? (rtnl_scope2str (nm_platform_route_scope_inv (route->scope_inv), str_scope, sizeof (str_scope))) : "",
+	            route->scope_inv ? (nm_platform_route_scope2str (nm_platform_route_scope_inv (route->scope_inv), str_scope, sizeof (str_scope))) : "",
 	            route->pref_src ? " pref-src " : "",
 	            route->pref_src ? inet_ntop (AF_INET, &route->pref_src, s_pref_src, sizeof(s_pref_src)) : "");
 	return buf;

src/platform/nm-platform.h

@@ -796,7 +796,10 @@ gboolean nm_platform_check_support_libnl_extended_ifa_flags (void);
 gboolean nm_platform_check_support_kernel_extended_ifa_flags (NMPlatform *self);
 gboolean nm_platform_check_support_user_ipv6ll (NMPlatform *self);
 
-void nm_platform_addr_flags2str (int flags, char *buf, size_t size);
+const char *nm_platform_link_flags2str (unsigned flags, char *buf, gsize len);
+const char *nm_platform_link_inet6_addrgenmode2str (guint8 mode, char *buf, gsize len);
+const char *nm_platform_addr_flags2str (unsigned flags, char *buf, gsize len);
+const char *nm_platform_route_scope2str (int scope, char *buf, gsize len);
 
 int nm_platform_ip_address_cmp_expiry (const NMPlatformIPAddress *a, const NMPlatformIPAddress *b);
 

src/platform/tests/test-general.c

@@ -53,37 +53,6 @@ test_link_get_all (void)
 
 /******************************************************************/
 
-static void
-test_nm_platform_ip6_address_to_string_flags (void)
-{
-	NMPlatformIP6Address addr = { 0 };
-
-	g_assert_cmpstr (strstr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags "), ==, NULL);
-
-	addr.flags = IFA_F_MANAGETEMPADDR;
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags mngtmpaddr ");
-
-	addr.flags = IFA_F_NOPREFIXROUTE;
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags noprefixroute ");
-
-	addr.flags = IFA_F_MANAGETEMPADDR | IFA_F_NOPREFIXROUTE;
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags mngtmpaddr,noprefixroute ");
-
-	addr.flags = IFA_F_TENTATIVE | IFA_F_NOPREFIXROUTE;
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags tentative,noprefixroute ");
-
-	addr.flags = IFA_F_TENTATIVE | IFA_F_PERMANENT | IFA_F_MANAGETEMPADDR| IFA_F_NOPREFIXROUTE;
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags tentative,permanent,mngtmpaddr,noprefixroute ");
-
-	addr.flags = IFA_F_TENTATIVE | IFA_F_PERMANENT | IFA_F_MANAGETEMPADDR| IFA_F_NOPREFIXROUTE | 0x8000;
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags tentative,permanent,mngtmpaddr,noprefixroute, ");
-
-	addr.flags = IFA_F_TENTATIVE | IFA_F_PERMANENT | IFA_F_MANAGETEMPADDR| IFA_F_NOPREFIXROUTE | ((G_MAXUINT - (G_MAXUINT >> 1)) >> 1);
-	nmtst_assert_str_has_substr (nm_platform_ip6_address_to_string (&addr, NULL, 0), " flags tentative,permanent,mngtmpaddr,noprefixroute, ");
-}
-
-/******************************************************************/
-
 NMTST_DEFINE ();
 
 int
@@ -93,7 +62,6 @@ main (int argc, char **argv)
 
 	g_test_add_func ("/general/init_linux_platform", test_init_linux_platform);
 	g_test_add_func ("/general/link_get_all", test_link_get_all);
-	g_test_add_func ("/general/nm_platform_ip6_address_to_string/flags", test_nm_platform_ip6_address_to_string_flags);
 
 	return g_test_run ();
 }