updates for supporting Linux kernel build and initrd utilities

cpio: --verbose, --quiet, --to-stdout
test: make 64-bit math enable-able for hush too
dnsdomainname: alias to hostname -d
hostname: support --fqdn, --domain, --file

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 91 insertions, 30 deletions

diff --git a/networking/hostname.c b/networking/hostname.c
index 48e70db91..7a120fa2c 100644
--- a/networking/hostname.c
+++ b/networking/hostname.c
@@ -4,20 +4,17 @@
  *
  * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
  *
- * adjusted by Erik Andersen <andersen@codepoet.org> to remove
+ * Adjusted by Erik Andersen <andersen@codepoet.org> to remove
  * use of long options and GNU getopt.  Improved the usage info.
  *
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
-
 #include "libbb.h"
 
 static void do_sethostname(char *s, int isfile)
 {
-	if (!s)
-		return;
+//	if (!s)
+//		return;
 	if (isfile) {
 		parser_t *parser = config_open2(s, xfopen_for_read);
 		while (config_read(parser, &s, 1, 1, "# \t", PARSE_NORMAL & ~PARSE_GREEDY)) {
@@ -25,15 +22,65 @@ static void do_sethostname(char *s, int isfile)
 		}
 		if (ENABLE_FEATURE_CLEAN_UP)
 			config_close(parser);
-	} else if (sethostname(s, strlen(s)) < 0) {
-		if (errno == EPERM)
-			bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
+	} else if (sethostname(s, strlen(s))) {
+//		if (errno == EPERM)
+//			bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
 		bb_perror_msg_and_die("sethostname");
 	}
 }
 
+/* Manpage circa 2009:
+ *
+ * hostname [-v] [-a] [--alias] [-d] [--domain] [-f] [--fqdn] [--long] 
+ *      [-i] [--ip-address] [-s] [--short] [-y] [--yp] [--nis]
+ *
+ * hostname [-v] [-F filename] [--file filename] / [hostname]
+ *
+ * domainname [-v] [-F filename] [--file filename]  / [name]
+ *  { bbox: not supported }
+ *
+ * nodename [-v] [-F filename] [--file filename] / [name]
+ *  { bbox: not supported }
+ *
+ * dnsdomainname [-v]
+ *  { bbox: supported: Linux kernel build needs this }
+ * nisdomainname [-v]
+ *  { bbox: not supported }
+ * ypdomainname [-v]
+ *  { bbox: not supported }
+ *
+ * -a, --alias
+ *  Display the alias name of the host (if used).
+ *  { bbox: not supported }
+ * -d, --domain
+ *  Display the name of the DNS domain. Don't use the command
+ *  domainname to get the DNS domain name because it will show the
+ *  NIS domain name and not the DNS domain name. Use dnsdomainname
+ *  instead.
+ * -f, --fqdn, --long
+ *  Display the FQDN (Fully Qualified Domain Name). A FQDN consists
+ *  of a short host name and the DNS domain name. Unless you are
+ *  using bind or NIS for host lookups you can change the FQDN and
+ *  the DNS domain name (which is part of the FQDN) in the
+ *  /etc/hosts file.
+ * -i, --ip-address
+ *  Display the IP address(es) of the host.
+ * -s, --short
+ *  Display the short host name. This is the host name cut at the
+ *  first dot.
+ * -v, --verbose
+ *  Be verbose and tell what's going on.
+ *  { bbox: supported but ignored }
+ * -y, --yp, --nis
+ *  Display the NIS domain name. If a parameter is given (or --file
+ *  name ) then root can also set a new NIS domain.
+ *  { bbox: not supported }
+ * -F, --file filename
+ *  Read the host name from the specified file. Comments (lines
+ *  starting with a `#') are ignored.
+ */
 int hostname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int hostname_main(int argc, char **argv)
+int hostname_main(int argc UNUSED_PARAM, char **argv)
 {
 	enum {
 		OPT_d = 0x1,
@@ -44,49 +91,63 @@ int hostname_main(int argc, char **argv)
 		OPT_dfis = 0xf,
 	};
 
+	unsigned opts;
 	char *buf;
 	char *hostname_str;
 
-	if (argc < 1)
-		bb_show_usage();
+#if ENABLE_LONG_OPTS
+	applet_long_options =
+		"domain\0"     No_argument "d"
+		"fqdn\0"       No_argument "f"
+	//Enable if seen in active use in some distro:
+	//	"long\0"       No_argument "f"
+	//	"ip-address\0" No_argument "i"
+	//	"short\0"      No_argument "s"
+	//	"verbose\0"    No_argument "v"
+		"file\0"       No_argument "F"
+		;
 
-	getopt32(argv, "dfisF:", &hostname_str);
+#endif
+	/* dnsdomainname from net-tools 1.60, hostname 1.100 (2001-04-14),
+	 * supports hostname's options too (not just -v as manpage says) */
+	opts = getopt32(argv, "dfisF:v", &hostname_str);
 	argv += optind;
 	buf = safe_gethostname();
+	if (applet_name[0] == 'd') /* dnsdomainname? */
+		opts = OPT_d;
 
-	/* Output in desired format */
-	if (option_mask32 & OPT_dfis) {
+	if (opts & OPT_dfis) {
+		/* Cases when we need full hostname (or its part) */
 		struct hostent *hp;
 		char *p;
+
 		hp = xgethostbyname(buf);
-		p = strchr(hp->h_name, '.');
-		if (option_mask32 & OPT_f) {
+		p = strchrnul(hp->h_name, '.');
+		if (opts & OPT_f) {
 			puts(hp->h_name);
-		} else if (option_mask32 & OPT_s) {
-			if (p)
-				*p = '\0';
+		} else if (opts & OPT_s) {
+			*p = '\0';
 			puts(hp->h_name);
-		} else if (option_mask32 & OPT_d) {
-			if (p)
+		} else if (opts & OPT_d) {
+			if (*p)
 				puts(p + 1);
-		} else if (option_mask32 & OPT_i) {
+		} else /*if (opts & OPT_i)*/ {
 			while (hp->h_addr_list[0]) {
 				printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++)));
 			}
 			bb_putchar('\n');
 		}
-	}
-	/* Set the hostname */
-	else if (option_mask32 & OPT_F) {
+	} else if (opts & OPT_F) {
+		/* Set the hostname */
 		do_sethostname(hostname_str, 1);
 	} else if (argv[0]) {
+		/* Set the hostname */
 		do_sethostname(argv[0], 0);
-	}
-	/* Or if all else fails,
-	 * just print the current hostname */
-	else {
+	} else {
+		/* Just print the current hostname */
 		puts(buf);
 	}
+
 	if (ENABLE_FEATURE_CLEAN_UP)
 		free(buf);
 	return EXIT_SUCCESS;