Make it clear that -a flag and interface parameter are mutually exclusive
This commit is contained in:
parent
f29db4e7ef
commit
b0fed5c6b6
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=119003
@ -27,9 +27,13 @@
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.Nd reverse ARP daemon
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.Nd reverse ARP daemon
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.Sh SYNOPSIS
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.Sh SYNOPSIS
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.Nm
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.Nm
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.Op Fl adfsv
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.Fl a
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.Op Fl dfsv
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.Op Fl t Ar directory
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.Op Fl t Ar directory
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.Op Ar interface
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.Nm
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.Op Fl dfsv
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.Op Fl t Ar directory
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.Ar interface
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.Sh DESCRIPTION
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.Sh DESCRIPTION
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The
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The
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.Nm
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.Nm
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@ -32,8 +32,8 @@ __FBSDID("$FreeBSD$");
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/*
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/*
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* rarpd - Reverse ARP Daemon
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* rarpd - Reverse ARP Daemon
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*
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*
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* Usage: rarpd -a [ -dfsv ] [-t directory] [ hostname ]
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* Usage: rarpd -a [-dfsv] [-t directory] [hostname]
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* rarpd [ -dfsv ] [-t directory] interface [ hostname ]
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* rarpd [-dfsv] [-t directory] interface [hostname]
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*
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*
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* 'hostname' is optional solely for backwards compatibility with Sun's rarpd.
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* 'hostname' is optional solely for backwards compatibility with Sun's rarpd.
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* Currently, the argument is ignored.
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* Currently, the argument is ignored.
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@ -145,7 +145,7 @@ main(int argc, char *argv[])
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openlog(name, LOG_PID | LOG_CONS, LOG_DAEMON);
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openlog(name, LOG_PID | LOG_CONS, LOG_DAEMON);
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opterr = 0;
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opterr = 0;
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while ((op = getopt(argc, argv, "adfst:v")) != -1) {
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while ((op = getopt(argc, argv, "adfst:v")) != -1)
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switch (op) {
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switch (op) {
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case 'a':
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case 'a':
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++aflag;
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++aflag;
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@ -175,16 +175,16 @@ main(int argc, char *argv[])
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usage();
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usage();
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/* NOTREACHED */
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/* NOTREACHED */
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}
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}
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}
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argc -= optind;
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ifname = argv[optind++];
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argv += optind;
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hostname = ifname ? argv[optind] : NULL;
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ifname = (aflag == 0) ? argv[0] : NULL;
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hostname = ifname ? argv[1] : argv[0];
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if ((aflag && ifname) || (!aflag && ifname == NULL))
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if ((aflag && ifname) || (!aflag && ifname == NULL))
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usage();
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usage();
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if (aflag)
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init(ifname);
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init(NULL);
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else
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init(ifname);
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if (!fflag) {
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if (!fflag) {
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if (daemon(0,0)) {
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if (daemon(0,0)) {
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@ -308,7 +308,9 @@ init(char *target)
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static void
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static void
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usage(void)
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usage(void)
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{
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{
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(void)fprintf(stderr, "usage: rarpd [-adfsv] [-t directory] [interface]\n");
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(void)fprintf(stderr, "%s\n%s\n",
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"usage: rarpd -a [-dfsv] [-t directory]",
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" rarpd [-dfsv] [-t directory] interface");
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exit(1);
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exit(1);
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}
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}
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