[PATCH 26/24] common: drop HOSTOS

["Darrick J. Wong" <darrick.wong@oracle.com>]

From: Darrick J. Wong <darrick.wong@oracle.com>

We effectively support only Linux these days, so drop most of the
special casing of HOSTOS.  We'll retain the simple check just in case
someone tries to run this on a different operating system.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 common/config |   50 ++++++++++++++++++++++----------------------------
 common/rc     |   20 ++------------------
 common/xfs    |    2 +-
 3 files changed, 25 insertions(+), 47 deletions(-)

diff --git a/common/config b/common/config
index 1fe1e0e1..3de87ea7 100644
--- a/common/config
+++ b/common/config
@@ -46,7 +46,7 @@ export LC_ALL=C
 PATH=".:$PATH"
 
 export HOST=`hostname -s`
-export HOSTOS=`uname -s`
+test `uname -s` = "Linux" || _fatal "fstests only supports Linux"
 
 export MODULAR=0               # using XFS as a module or not
 export BOOT="/boot"            # install target for kernels
@@ -143,7 +143,7 @@ export PS_ALL_FLAGS="-ef"
 
 export DF_PROG="$(type -P df)"
 [ "$DF_PROG" = "" ] && _fatal "df not found"
-[ "$HOSTOS" = "Linux" ] && export DF_PROG="$DF_PROG -T -P"
+export DF_PROG="$DF_PROG -T -P"	# Linux
 
 export XFS_IO_PROG="$(type -P xfs_io)"
 [ "$XFS_IO_PROG" = "" ] && _fatal "xfs_io not found"
@@ -242,29 +242,25 @@ if [ "$UDEV_SETTLE_PROG" == "" ]; then
 fi
 export UDEV_SETTLE_PROG
 
-case "$HOSTOS" in
-    Linux)
-	export MKFS_XFS_PROG=$(type -P mkfs.xfs)
-	export MKFS_EXT4_PROG=$(type -P mkfs.ext4)
-	export MKFS_UDF_PROG=$(type -P mkudffs)
-	export MKFS_BTRFS_PROG=$(set_mkfs_prog_path_with_opts btrfs)
-	export MKFS_F2FS_PROG=$(set_mkfs_prog_path_with_opts f2fs)
-	export DUMP_F2FS_PROG=$(type -P dump.f2fs)
-	export F2FS_IO_PROG=$(type -P f2fs_io)
-	export BTRFS_UTIL_PROG=$(type -P btrfs)
-	export BTRFS_SHOW_SUPER_PROG=$(type -P btrfs-show-super)
-	export BTRFS_CONVERT_PROG=$(type -P btrfs-convert)
-	export BTRFS_TUNE_PROG=$(type -P btrfstune)
-	export XFS_FSR_PROG=$(type -P xfs_fsr)
-	export MKFS_NFS_PROG="false"
-	export MKFS_CIFS_PROG="false"
-	export MKFS_OVERLAY_PROG="false"
-	export MKFS_REISER4_PROG=$(type -P mkfs.reiser4)
-	export E2FSCK_PROG=$(type -P e2fsck)
-	export TUNE2FS_PROG=$(type -P tune2fs)
-	export FSCK_OVERLAY_PROG=$(type -P fsck.overlay)
-        ;;
-esac
+export MKFS_XFS_PROG=$(type -P mkfs.xfs)
+export MKFS_EXT4_PROG=$(type -P mkfs.ext4)
+export MKFS_UDF_PROG=$(type -P mkudffs)
+export MKFS_BTRFS_PROG=$(set_mkfs_prog_path_with_opts btrfs)
+export MKFS_F2FS_PROG=$(set_mkfs_prog_path_with_opts f2fs)
+export DUMP_F2FS_PROG=$(type -P dump.f2fs)
+export F2FS_IO_PROG=$(type -P f2fs_io)
+export BTRFS_UTIL_PROG=$(type -P btrfs)
+export BTRFS_SHOW_SUPER_PROG=$(type -P btrfs-show-super)
+export BTRFS_CONVERT_PROG=$(type -P btrfs-convert)
+export BTRFS_TUNE_PROG=$(type -P btrfstune)
+export XFS_FSR_PROG=$(type -P xfs_fsr)
+export MKFS_NFS_PROG="false"
+export MKFS_CIFS_PROG="false"
+export MKFS_OVERLAY_PROG="false"
+export MKFS_REISER4_PROG=$(type -P mkfs.reiser4)
+export E2FSCK_PROG=$(type -P e2fsck)
+export TUNE2FS_PROG=$(type -P tune2fs)
+export FSCK_OVERLAY_PROG=$(type -P fsck.overlay)
 
 # SELinux adds extra xattrs which can mess up our expected output.
 # So, mount with a context, and they won't be created.
@@ -753,9 +749,7 @@ if [ -z "$CONFIG_INCLUDED" ]; then
 
 	# Autodetect fs type based on what's on $TEST_DEV unless it's been set
 	# externally
-	if [ -z "$FSTYP" ] && \
-	   [ "$HOSTOS" == "Linux" -o "$OSTYPE" == "linux-gnu" ] && \
-	   [ ! -z "$TEST_DEV" ]; then
+	if [ -z "$FSTYP" ] && [ ! -z "$TEST_DEV" ]; then
 		FSTYP=`blkid -c /dev/null -s TYPE -o value $TEST_DEV`
 	fi
 	FSTYP=${FSTYP:=xfs}
diff --git a/common/rc b/common/rc
index bbafc73d..3adeeefe 100644
--- a/common/rc
+++ b/common/rc
@@ -49,19 +49,13 @@ _math()
 
 dd()
 {
-   if [ "$HOSTOS" == "Linux" ]
-   then	
 	command dd --help 2>&1 | grep noxfer >/dev/null
-	
 	if [ "$?" -eq 0 ]
 	    then
 		command dd status=noxfer $@
 	    else
 		command dd $@
-    	fi
-   else
-	command dd $@
-   fi
+	fi
 }
 
 # Prints the md5 checksum of a given file
@@ -992,7 +986,7 @@ _scratch_mkfs_sized()
 
     local blocks=`expr $fssize / $blocksize`
 
-    if [ "$HOSTOS" == "Linux" -a -b "$SCRATCH_DEV" ]; then
+    if [ -b "$SCRATCH_DEV" ]; then
 	local devsize=`blockdev --getsize64 $SCRATCH_DEV`
 	[ "$fssize" -gt "$devsize" ] && _notrun "Scratch device too small"
     fi
@@ -1764,11 +1758,6 @@ _require_logdev()
 #
 _require_loop()
 {
-    if [ "$HOSTOS" != "Linux" ]
-    then
-	_notrun "This test requires linux for loopback device support"
-    fi
-
     modprobe loop >/dev/null 2>&1
     if grep loop /proc/devices >/dev/null 2>&1
     then
@@ -1782,11 +1771,6 @@ _require_loop()
 #
 _require_ext2()
 {
-    if [ "$HOSTOS" != "Linux" ]
-    then
-	_notrun "This test requires linux for ext2 filesystem support"
-    fi
-
     modprobe ext2 >/dev/null 2>&1
     if grep ext2 /proc/filesystems >/dev/null 2>&1
     then
diff --git a/common/xfs b/common/xfs
index 8a3fd30c..0f4b8521 100644
--- a/common/xfs
+++ b/common/xfs
@@ -481,7 +481,7 @@ _check_xfs_filesystem()
 
 	$XFS_LOGPRINT_PROG -t $extra_log_options $device 2>&1 \
 		| tee $tmp.logprint | grep -q "<CLEAN>"
-	if [ $? -ne 0 -a "$HOSTOS" = "Linux" ]; then
+	if [ $? -ne 0 ]; then
 		_log_err "_check_xfs_filesystem: filesystem on $device has dirty log"
 		echo "*** xfs_logprint -t output ***"	>>$seqres.full
 		cat $tmp.logprint			>>$seqres.full