btrfs-progs: update CHANGES for v4.13.3

[platform/upstream/btrfs-progs.git] / tests / common

diff --git a/tests/common b/tests/common
index bed6009..eb525a4 100644 (file)
--- a/tests/common
+++ b/tests/common
@@ -21,6 +21,27 @@ _assert_path()
        exit 1
 }
 
+# $1: this string gets matched to files, absolute or relative path, or a
+# systemwide command available via $PATH
+_is_file_or_command()
+{
+       local msg
+
+       msg="$1"
+       if [ -z "$msg" ]; then
+               return 1
+       fi
+
+       if [ -f "$msg" -o -d "$msg" -o -b "$msg" ]; then
+               return 0
+       fi
+       msg=$(type -p -- "$msg")
+       if [ -f "$msg" ]; then
+               return 0
+       fi
+       return 1
+}
+
 _fail()
 {
        echo "$*" | tee -a "$RESULTS"
@@ -133,9 +154,12 @@ run_check_stdout()
        echo "############### $@" >> "$RESULTS" 2>&1
        if [[ $TEST_LOG =~ tty ]]; then echo "CMD(stdout): $@" > /dev/tty; fi
        if [ "$1" = 'root_helper' ]; then
-               "$@" 2>&1 | tee -a "$RESULTS" || _fail "failed: $@"
+               "$@" 2>&1 | tee -a "$RESULTS"
        else
-               $INSTRUMENT "$@" 2>&1 | tee -a "$RESULTS" || _fail "failed: $@"
+               $INSTRUMENT "$@" 2>&1 | tee -a "$RESULTS"
+       fi
+       if [ ${PIPESTATUS[0]} -ne 0 ]; then
+               _fail "failed: $@"
        fi
 }
 
@@ -185,6 +209,11 @@ run_mustfail()
        msg="$1"
        shift
 
+       if _is_file_or_command "$msg"; then
+               echo "ASSERTION FAIL: 1st argument of run_mustfail must be a message"
+               exit 1
+       fi
+
        ins=$(_get_spec_ins "$@")
        spec=$(($ins-1))
        cmd=$(eval echo "\${$spec}")
@@ -480,7 +509,7 @@ generate_dataset() {
                        ;;
 
                slow_symlink)
-                       long_filename=`date +%s | sha256sum | cut -f1 -d'-'`
+                       long_filename=`date +%s | sha256sum | cut -f1 -d ' '`
                        run_check $SUDO_HELPER touch "$dirpath/$long_filename"
                        for num in $(seq 1 "$DATASET_SIZE"); do
                                run_check $SUDO_HELPER ln -s "$dirpath/$long_filename" "$dirpath/slow_slink.$num"
@@ -493,6 +522,48 @@ generate_dataset() {
        esac
 }
 
+# prepare environment for loop devices, set up the following variables
+# - nloopdevs -- number of desired devices
+# - loopdevs  -- array containing paths to all devices (after prepare is called)
+# - loopdev_prefix -- file backed images starting with this string, 'img' by default
+#
+# $1: number of loop devices to be set up
+setup_loopdevs()
+{
+       if [ -z "$1" ]; then
+               _fail "setup_loopdevs needs a number"
+       fi
+       nloopdevs="$1"
+       loopdev_prefix=img
+       declare -a loopdevs
+
+}
+
+# create all loop devices from a given loopdev environment
+prepare_loopdevs()
+{
+       for i in `seq $nloopdevs`; do
+               touch $loopdev_prefix$i
+               chmod a+rw $loopdev_prefix$i
+               truncate -s0 $loopdev_prefix$i
+               truncate -s2g $loopdev_prefix$i
+               loopdevs[$i]=`run_check_stdout $SUDO_HELPER losetup --find --show $loopdev_prefix$i`
+       done
+}
+
+# detach loop devices and reset their size to 0, delete the files afterwards
+cleanup_loopdevs()
+{
+       for dev in ${loopdevs[@]}; do
+               run_check $SUDO_HELPER losetup -d $dev
+       done
+       for i in `seq $nloopdevs`; do
+               truncate -s0 $loopdev_prefix$i
+               rm -- "$loopdev_prefix$i"
+       done
+       run_check $SUDO_HELPER losetup --all
+}
+
 init_env()
 {
        TEST_MNT="${TEST_MNT:-$TOP/tests/mnt}"