From: Karel Zak <kzak@redhat.com>
Date: Thu, 21 May 2009 14:02:42 +0000 (+0200)
Subject: uuidgen: new command (from e2fsprogs)
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0140c3972bd68ccfe3a418a0c5c5b4117d6e931c;p=util-linux

uuidgen: new command (from e2fsprogs)

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/misc-utils/.gitignore b/misc-utils/.gitignore
index 122b1920..ddb44213 100644
--- a/misc-utils/.gitignore
+++ b/misc-utils/.gitignore
@@ -12,3 +12,4 @@ setterm
 whereis
 kill
 write
+uuidgen
diff --git a/misc-utils/Makefile.am b/misc-utils/Makefile.am
index 40610c14..781e5d2e 100644
--- a/misc-utils/Makefile.am
+++ b/misc-utils/Makefile.am
@@ -17,6 +17,13 @@ CLEANFILES = chkdupexe
 dist_man_MANS = cal.1 chkdupexe.1 ddate.1 logger.1 look.1 mcookie.1 \
 	namei.1 script.1 whereis.1 scriptreplay.1
 
+if BUILD_LIBUUID
+usrbinexec_PROGRAMS += uuidgen
+dist_man_MANS += uuidgen.1
+uuidgen_LDADD = $(ul_libuuid_la)
+uuidgen_CFLAGS = -I$(ul_libuuid_srcdir)
+endif
+
 if HAVE_TINFO
 cal_LDADD = -ltinfo @NCURSES_LIBS@
 else
@@ -63,7 +70,6 @@ endif
 EXTRA_DIST += README.reset reset.033c
 
 if BUILD_WRITE
-
 usrbinexec_PROGRAMS += write
 dist_man_MANS += write.1
 write_CFLAGS = $(SUID_CFLAGS) $(AM_CFLAGS)
diff --git a/misc-utils/uuidgen.1 b/misc-utils/uuidgen.1
new file mode 100644
index 00000000..13b13c42
--- /dev/null
+++ b/misc-utils/uuidgen.1
@@ -0,0 +1,62 @@
+.\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca)
+.\"
+.\" This man page was created for libuuid.so.1.1 from e2fsprogs-1.14.
+.\"
+.\" This file may be copied under the terms of the GNU Public License.
+.\"
+.\" Created  Wed Mar 10 17:42:12 1999, Andreas Dilger
+.TH UUIDGEN 1 "May 2009" "Linux"
+.SH NAME
+uuidgen \- command\-line utility to create a new UUID value
+.SH SYNOPSIS
+.B uuidgen
+[
+.B \-r
+|
+.B \-t
+]
+.SH DESCRIPTION
+The
+.B uuidgen
+program creates (and prints)
+a new universally unique identifier (UUID) using the
+.BR libuuid (3)
+library.  The new UUID can reasonably be considered unique among
+all UUIDs created on the local system,
+and among UUIDs created on other systems in the past
+and in the future.
+.PP
+There are two types of UUID's which
+.B uuidgen
+can generate: time-based UUID's and random-based UUID's.  By
+default
+.B uuidgen
+will generate a random-based UUID if a high-quality random number
+generator is present.  Otherwise, it will chose a time-based UUID.  It
+is possible to force the generation of one of these two
+UUID types by using the
+.B \-r
+or
+.B \-t
+options.
+.SH OPTIONS
+.TP
+.B \-r
+Generate a random-based UUID.  This method creates a UUID consisting mostly
+of random bits.  It requires that the operating system have a high
+quality random number generator, such as
+.IR /dev/random .
+.TP
+.B \-t
+Generate a time-based UUID.  This method creates a UUID based on the system
+clock plus the system's ethernet hardware address, if present.
+.SH "CONFORMING TO"
+OSF DCE 1.1
+.SH AUTHOR
+.B uuidgen
+was written by Andreas Dilger for libuuid.
+.SH AVAILABILITY
+The uuidgen command is part of the util-linux-ng package and is available from
+ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
+.SH "SEE ALSO"
+.BR libuuid (3)
diff --git a/misc-utils/uuidgen.c b/misc-utils/uuidgen.c
new file mode 100644
index 00000000..3cf6ec91
--- /dev/null
+++ b/misc-utils/uuidgen.c
@@ -0,0 +1,77 @@
+/*
+ * gen_uuid.c --- generate a DCE-compatible uuid
+ *
+ * Copyright (C) 1999, Andreas Dilger and Theodore Ts'o
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#else
+extern int getopt(int argc, char * const argv[], const char *optstring);
+extern char *optarg;
+extern int optind;
+#endif
+
+#include "uuid.h"
+#include "nls.h"
+
+#define DO_TYPE_TIME	1
+#define DO_TYPE_RANDOM	2
+
+static void usage(const char *progname)
+{
+	fprintf(stderr, _("Usage: %s [-r] [-t]\n"), progname);
+	exit(1);
+}
+
+int
+main (int argc, char *argv[])
+{
+	int    c;
+	int    do_type = 0;
+	char   str[37];
+	uuid_t uu;
+
+	setlocale(LC_ALL, "");
+	bindtextdomain(PACKAGE, LOCALEDIR);
+	textdomain(PACKAGE);
+
+	while ((c = getopt (argc, argv, "tr")) != EOF)
+		switch (c) {
+		case 't':
+			do_type = DO_TYPE_TIME;
+			break;
+		case 'r':
+			do_type = DO_TYPE_RANDOM;
+			break;
+		default:
+			usage(argv[0]);
+		}
+
+	switch (do_type) {
+	case DO_TYPE_TIME:
+		uuid_generate_time(uu);
+		break;
+	case DO_TYPE_RANDOM:
+		uuid_generate_random(uu);
+		break;
+	default:
+		uuid_generate(uu);
+		break;
+	}
+
+	uuid_unparse(uu, str);
+
+	printf("%s\n", str);
+
+	return 0;
+}