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[patch 4/5] ipvsadm: Use an enum for the val of options that have no sho

To: lvs-devel@xxxxxxxxxxxxxxx
Subject: [patch 4/5] ipvsadm: Use an enum for the val of options that have no short option
Cc: Wensong Zhang <wensong@xxxxxxxxxxxx>, Julian Anastasov <ja@xxxxxx>, Nick Chalk <nick@xxxxxxxxxxxxxxxx>
From: Simon Horman <horms@xxxxxxxxxxxx>
Date: Mon, 26 Jul 2010 17:04:52 +0900
I think that this significantly aids in the management of
these values while leaving all valid shortopts available as 'val' entries.

Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>

Index: trunk/ipvsadm.c
===================================================================
--- trunk.orig/ipvsadm.c        2010-07-25 21:53:57.000000000 +0900
+++ trunk/ipvsadm.c     2010-07-25 21:54:41.000000000 +0900
@@ -264,6 +264,23 @@ struct ipvs_command_entry {
        ipvs_daemon_t           daemon;
 };
 
+/* Use values outside ASCII range so that if an option has
+ * a short name it can be used as the tag
+ */
+enum {
+       TAG_SET = 128,
+       TAG_START_DAEMON,
+       TAG_STOP_DAEMON ,
+       TAG_MCAST_INTERFACE,
+       TAG_TIMEOUT,
+       TAG_DAEMON,
+       TAG_STATS,
+       TAG_RATE,
+       TAG_THRESHOLDS,
+       TAG_PERSISTENTCONN,
+       TAG_SORT,
+       TAG_NO_SORT,
+};
 
 /* various parsing helpers & parsing functions */
 static int str_is_digit(const char *str);
@@ -353,15 +370,15 @@ parse_options(int argc, char **argv, str
                { "add-server", 'a', POPT_ARG_NONE, NULL, 'a', NULL, NULL },
                { "edit-server", 'e', POPT_ARG_NONE, NULL, 'e', NULL, NULL },
                { "delete-server", 'd', POPT_ARG_NONE, NULL, 'd', NULL, NULL },
-               { "set", '\0', POPT_ARG_NONE, NULL, '4', NULL, NULL },
+               { "set", '\0', POPT_ARG_NONE, NULL, TAG_SET, NULL, NULL },
                { "help", 'h', POPT_ARG_NONE, NULL, 'h', NULL, NULL },
                { "version", 'v', POPT_ARG_NONE, NULL, 'v', NULL, NULL },
                { "restore", 'R', POPT_ARG_NONE, NULL, 'R', NULL, NULL },
                { "save", 'S', POPT_ARG_NONE, NULL, 'S', NULL, NULL },
-               { "start-daemon", '\0', POPT_ARG_STRING, &optarg, '1',
-                 NULL, NULL },
-               { "stop-daemon", '\0', POPT_ARG_STRING, &optarg, '2',
-                 NULL, NULL },
+               { "start-daemon", '\0', POPT_ARG_STRING, &optarg,
+                 TAG_START_DAEMON, NULL, NULL },
+               { "stop-daemon", '\0', POPT_ARG_STRING, &optarg,
+                 TAG_STOP_DAEMON, NULL, NULL },
                { "tcp-service", 't', POPT_ARG_STRING, &optarg, 't',
                  NULL, NULL },
                { "udp-service", 'u', POPT_ARG_STRING, &optarg, 'u',
@@ -384,20 +401,23 @@ parse_options(int argc, char **argv, str
                  NULL, NULL },
                { "numeric", 'n', POPT_ARG_NONE, NULL, 'n', NULL, NULL },
                { "connection", 'c', POPT_ARG_NONE, NULL, 'c', NULL, NULL },
-               { "mcast-interface", '\0', POPT_ARG_STRING, &optarg, '3',
-                 NULL, NULL },
+               { "mcast-interface", '\0', POPT_ARG_STRING, &optarg,
+                 TAG_MCAST_INTERFACE, NULL, NULL },
                { "syncid", '\0', POPT_ARG_STRING, &optarg, 'I', NULL, NULL },
-               { "timeout", '\0', POPT_ARG_NONE, NULL, '5', NULL, NULL },
-               { "daemon", '\0', POPT_ARG_NONE, NULL, '6', NULL, NULL },
-               { "stats", '\0', POPT_ARG_NONE, NULL, '7', NULL, NULL },
-               { "rate", '\0', POPT_ARG_NONE, NULL, '8', NULL, NULL },
-               { "thresholds", '\0', POPT_ARG_NONE, NULL, '9', NULL, NULL },
-               { "persistent-conn", '\0', POPT_ARG_NONE, NULL, 'P',
+               { "timeout", '\0', POPT_ARG_NONE, NULL, TAG_TIMEOUT,
                  NULL, NULL },
-               { "nosort", '\0', POPT_ARG_NONE, NULL, '0', NULL, NULL },
-               { "sort", '\0', POPT_ARG_NONE, NULL, 'o', NULL, NULL },
+               { "daemon", '\0', POPT_ARG_NONE, NULL, TAG_DAEMON, NULL, NULL },
+               { "stats", '\0', POPT_ARG_NONE, NULL, TAG_STATS, NULL, NULL },
+               { "rate", '\0', POPT_ARG_NONE, NULL, TAG_RATE, NULL, NULL },
+               { "thresholds", '\0', POPT_ARG_NONE, NULL,
+                  TAG_THRESHOLDS, NULL, NULL },
+               { "persistent-conn", '\0', POPT_ARG_NONE, NULL,
+                 TAG_PERSISTENTCONN, NULL, NULL },
+               { "nosort", '\0', POPT_ARG_NONE, NULL,
+                  TAG_NO_SORT, NULL, NULL },
+               { "sort", '\0', POPT_ARG_NONE, NULL, TAG_SORT, NULL, NULL },
                { "exact", 'X', POPT_ARG_NONE, NULL, 'X', NULL, NULL },
-               { "ipv6", '6', POPT_ARG_NONE, NULL, '%', NULL, NULL },
+               { "ipv6", '6', POPT_ARG_NONE, NULL, '6', NULL, NULL },
                { NULL, 0, 0, NULL, 0, NULL, NULL }
        };
 
@@ -436,7 +456,7 @@ parse_options(int argc, char **argv, str
        case 'Z':
                set_command(&ce->cmd, CMD_ZERO);
                break;
-       case '4':
+       case TAG_SET:
                set_command(&ce->cmd, CMD_TIMEOUT);
                break;
        case 'R':
@@ -445,7 +465,7 @@ parse_options(int argc, char **argv, str
        case 'S':
                set_command(&ce->cmd, CMD_SAVE);
                break;
-       case '1':
+       case TAG_START_DAEMON:
                set_command(&ce->cmd, CMD_STARTDAEMON);
                if (!strcmp(optarg, "master"))
                        ce->daemon.state = IP_VS_STATE_MASTER;
@@ -453,7 +473,7 @@ parse_options(int argc, char **argv, str
                        ce->daemon.state = IP_VS_STATE_BACKUP;
                else fail(2, "illegal start-daemon parameter specified");
                break;
-       case '2':
+       case TAG_STOP_DAEMON:
                set_command(&ce->cmd, CMD_STOPDAEMON);
                if (!strcmp(optarg, "master"))
                        ce->daemon.state = IP_VS_STATE_MASTER;
@@ -568,7 +588,7 @@ parse_options(int argc, char **argv, str
                        set_option(options, OPT_NUMERIC);
                        *format |= FMT_NUMERIC;
                        break;
-               case '3':
+               case TAG_MCAST_INTERFACE:
                        set_option(options, OPT_MCAST);
                        strncpy(ce->daemon.mcast_ifn,
                                optarg, IP_VS_IFNAME_MAXLEN);
@@ -579,40 +599,40 @@ parse_options(int argc, char **argv, str
                             string_to_number(optarg, 0, 255)) == -1)
                                fail(2, "illegal syncid specified");
                        break;
-               case '5':
+               case TAG_TIMEOUT:
                        set_option(options, OPT_TIMEOUT);
                        break;
-               case '6':
+               case TAG_DAEMON:
                        set_option(options, OPT_DAEMON);
                        break;
-               case '7':
+               case TAG_STATS:
                        set_option(options, OPT_STATS);
                        *format |= FMT_STATS;
                        break;
-               case '8':
+               case TAG_RATE:
                        set_option(options, OPT_RATE);
                        *format |= FMT_RATE;
                        break;
-               case '9':
+               case TAG_THRESHOLDS:
                        set_option(options, OPT_THRESHOLDS);
                        *format |= FMT_THRESHOLDS;
                        break;
-               case 'P':
+               case TAG_PERSISTENTCONN:
                        set_option(options, OPT_PERSISTENTCONN);
                        *format |= FMT_PERSISTENTCONN;
                        break;
-               case '0':
+               case TAG_NO_SORT:
                        set_option(options, OPT_NOSORT  );
                        *format |= FMT_NOSORT;
                        break;
-               case 'o':
+               case TAG_SORT:
                        /* Sort is the default, this is a no-op for 
compatibility */
                        break;
                case 'X':
                        set_option(options, OPT_EXACT);
                        *format |= FMT_EXACT;
                        break;
-               case '%':
+               case '6':
                        if (ce->svc.fwmark) {
                                ce->svc.af = AF_INET6;
                                ce->svc.netmask = 128;

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