From ac643e5ca41743fc4fa320308648b1a8d90804e5 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sat, 23 Jan 2016 14:25:27 -0500
Subject: cmd/installer-pc: Check exit status of dd, (s)fdisk, and mke2fs

---
diff --git a/src/cmd/installer-pc.sh b/src/cmd/installer-pc.sh
index ce155f3..595e9c9 100644
--- a/src/cmd/installer-pc.sh
+++ b/src/cmd/installer-pc.sh
@@ -67,7 +67,9 @@ cmd_installer_pc_main()
 	fi
 	suite="$(profile_normalize_suite "${suite}")"
 
-	cmd_installer_pc_make_partition_and_fs "${dev}"
+	if ! cmd_installer_pc_make_partition_and_fs "${dev}"; then
+		return 2
+	fi
 	if ! root="$(block_mount "${dev}1")"; then
 		return 2
 	fi
@@ -104,13 +106,26 @@ cmd_installer_pc_make_partition_and_fs()
 {
 	local dev="${1}"
 
-	dd if=/dev/zero of="${dev}" bs=512 count=1
+	if ! dd if=/dev/zero of="${dev}" bs=512 count=1; then
+		return 1
+	fi
+
 	if ${HAVE_SFDISK}; then
-		printf ',,83,*\n' | ${SFDISK} "${dev}"
+		if ! printf ',,83,*\n' | ${SFDISK} "${dev}"; then
+			return 1
+		fi
 	elif ${HAVE_FDISK}; then
-		printf 'n\np\n1\n\n\nt\n83\na\n1\nw\n' | ${FDISK} "${dev}"
+		if ! printf 'n\np\n1\n\n\nt\n83\na\n1\nw\n' | ${FDISK} "${dev}"
+		then
+			return 1
+		fi
+	fi
+
+	if ! ${MKE2FS} -t ext4 "${dev}1"; then
+		return 1
 	fi
-	${MKE2FS} -t ext4 "${dev}1"
+
+	return 0
 }
 
 cmd_installer_pc_register()
--
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