MFC efivar(8) (by imp):

List of revisions merged:
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Discussed with:	gjb (re), imp
Sponsored by:	The FreeBSD Foundation

4 files changed, 228 insertions, 0 deletions

diff --git a/usr.sbin/efidp/Makefile b/usr.sbin/efidp/Makefile
new file mode 100644
index 0000000..67358cb
--- /dev/null
+++ b/usr.sbin/efidp/Makefile
@@ -0,0 +1,8 @@
+# $FreeBSD$
+
+PROG=	efidp
+MAN=	efidp.8
+
+LIBADD= efivar
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/efidp/Makefile.depend b/usr.sbin/efidp/Makefile.depend
new file mode 100644
index 0000000..8af72d7
--- /dev/null
+++ b/usr.sbin/efidp/Makefile.depend
@@ -0,0 +1,19 @@
+# $FreeBSD$
+# Autogenerated - do NOT edit!
+
+DIRDEPS = \
+	gnu/lib/csu \
+	gnu/lib/libgcc \
+	include \
+	include/xlocale \
+	lib/${CSU_DIR} \
+	lib/libc \
+	lib/libcompiler_rt \
+	lib/libefivar \
+
+
+.include <dirdeps.mk>
+
+.if ${DEP_RELDIR} == ${_DEP_RELDIR}
+# local dependencies - needed for -jN in clean tree
+.endif
diff --git a/usr.sbin/efidp/efidp.8 b/usr.sbin/efidp/efidp.8
new file mode 100644
index 0000000..94b298c
--- /dev/null
+++ b/usr.sbin/efidp/efidp.8
@@ -0,0 +1,53 @@
+.\" Copyright (c) 2017 Netflix, Inc
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd March 5, 2017
+.Dt EFIDP 8
+.Os
+.Sh NAME
+.Nm efidp
+.Nd UEFI Device Path manipulation
+.Sh SYNOPSIS
+.Nm
+.Op Fl fp
+.Op Fl -parse
+.Op Fl -format
+.Sh DESCRIPTION
+This program manages
+.Dq Unified Extensible Firmware Interface
+.Pq UEFI
+Device Paths, as defined in the UEFI standard.
+.Sh SEE ALSO
+Appendix A of the UEFI specification has the format for GUIDs.
+All GUIDs
+.Dq Globally Unique Identifiers
+have the format described in RFC 4122.
+.El
+.Sh HISTORY
+The
+.Nm
+utility first appeared in
+.Fx 12.0 .
diff --git a/usr.sbin/efidp/efidp.c b/usr.sbin/efidp/efidp.c
new file mode 100644
index 0000000..a96cf9f
--- /dev/null
+++ b/usr.sbin/efidp/efidp.c
@@ -0,0 +1,148 @@
+/*-
+ * Copyright (c) 2016 Netflix, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <efivar.h>
+#include <efivar-dp.h>
+#include <err.h>
+#include <getopt.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* options descriptor */
+static struct option longopts[] = {
+	{ "format",		no_argument,		NULL,	'f' },
+	{ "parse",		no_argument,		NULL,	'p' },
+	{ NULL,			0,			NULL,	0 }
+};
+
+
+static int flag_format, flag_parse;
+
+static void
+usage(void)
+{
+
+	errx(1, "efidp [-fp]");
+}
+
+static ssize_t
+read_file(int fd, void **rv) 
+{
+	uint8_t *retval;
+	size_t len;
+	off_t off;
+	ssize_t red;
+
+	len = 4096;
+	off = 0;
+	retval = malloc(len);
+	do {
+		red = read(fd, retval + off, len - off);
+		off += red;
+		if (red < (ssize_t)(len - off))
+			break;
+		len *= 2;
+		retval = reallocf(retval, len);
+		if (retval == NULL)
+			return -1;
+	} while (1);
+	*rv = retval;
+
+	return off;
+}
+
+static void
+parse_args(int argc, char **argv)
+{
+	int ch;
+
+	while ((ch = getopt_long(argc, argv, "fp",
+		    longopts, NULL)) != -1) {
+		switch (ch) {
+		case 'f':
+			flag_format++;
+			break;
+		case 'p':
+			flag_parse++;
+			break;
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (argc >= 1)
+		usage();
+	
+	if (flag_parse + flag_format != 1) {
+		warnx("Can only use one of -p (--parse), "
+		    "and -f (--format)");
+		usage();
+	}
+}
+
+int
+main(int argc, char **argv)
+{
+	void *data;
+	ssize_t len;
+
+	parse_args(argc, argv);
+	len = read_file(STDIN_FILENO, &data);
+	if (len == -1)
+		err(1, "read");
+	if (flag_format) {
+		char buffer[4096];
+		ssize_t fmtlen;
+
+		fmtlen = efidp_format_device_path(buffer, sizeof(buffer),
+		    (const_efidp)data, len);
+		if (fmtlen > 0)
+			printf("%s\n", buffer);
+		free(data);
+	} else if (flag_parse) {
+		efidp dp;
+		ssize_t dplen;
+		char *str;
+
+		dp = malloc(8192);
+		str = realloc(data, len + 1);
+		if (str == NULL || dp == NULL)
+			errx(1, "Can't allocate memory.");
+		str[len] = '\0';
+		dplen = efidp_parse_device_path(str, dp, 8192);
+		if (dplen == -1)
+			errx(1, "Can't parse %s", str);
+		write(STDOUT_FILENO, dp, dplen);
+	}
+}