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Add -h flag to print help

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This commit is contained in:
Bjorn Andersson 2006-06-11 13:14:57 +00:00
parent 0775344744
commit 350aea908b
2 changed files with 25 additions and 7 deletions
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15
iodine.c
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@ -117,10 +117,16 @@ extern char *__progname;
static void static void
usage() { usage() {
printf("Usage: %s [-u user] nameserver topdomain\n", __progname); printf("Usage: %s [-f] [-u user] nameserver topdomain\n", __progname);
exit(2);
}
static void
help() {
printf("Usage: %s [-f] [-u user] nameserver topdomain\n", __progname);
printf(" -f is to keep running in foreground\n"); printf(" -f is to keep running in foreground\n");
printf(" -u name to drop privileges and run as user 'name'\n"); printf(" -u name to drop privileges and run as user 'name'\n");
exit(2); exit(0);
} }
int int
@ -141,11 +147,14 @@ main(int argc, char **argv)
usage(); usage();
} }
while ((choice = getopt(argc, argv, "fu:")) != -1) { while ((choice = getopt(argc, argv, "fhu:")) != -1) {
switch(choice) { switch(choice) {
case 'f': case 'f':
foreground = 1; foreground = 1;
break; break;
case 'h':
help();
break;
case 'u': case 'u':
username = optarg; username = optarg;
break; break;

15
iodined.c
View File

@ -117,11 +117,17 @@ extern char *__progname;
static void static void
usage() { usage() {
printf("Usage: %s [-f] [-u user] topdomain\n", __progname); printf("Usage: %s [-f] [-u user] topdomain\n", __progname);
printf("-f is to keep running in foreground\n");
printf("-u name to drop privileges and run as user 'name'\n");
exit(2); exit(2);
} }
static void
help() {
printf("Usage: %s [-f] [-u user] topdomain\n", __progname);
printf(" -f to keep running in foreground\n");
printf(" -u name to drop privileges and run as user 'name'\n");
exit(0);
}
int int
main(int argc, char **argv) main(int argc, char **argv)
{ {
@ -140,11 +146,14 @@ main(int argc, char **argv)
usage(); usage();
} }
while ((choice = getopt(argc, argv, "fu:")) != -1) { while ((choice = getopt(argc, argv, "fhu:")) != -1) {
switch(choice) { switch(choice) {
case 'f': case 'f':
foreground = 1; foreground = 1;
break; break;
case 'h':
help();
break;
case 'u': case 'u':
username = optarg; username = optarg;
break; break;