[PATCH 03/28] fstests: move test exit functions to common/exit

[Dave Chinner <david@fromorbit.com>]

From: Dave Chinner <dchinner@redhat.com>

Functions like _fatal() and _exit() need to be called from
common/config as well as general common and test code. Having some
of these test exit functions defined in common/config requires all
contexts to source this file and run all the environment setup
just to gain access to these functions.

There is a catch-22 with these functions - they cannot be defined in
common/rc for all contexts to pick up automatically, because
common/config needs them and some functions in common/rc depend on
common/config being sourced first. And we can't define them all in
common/config, because there are contexts where that hasn't been
sourced that need a specific test exit function.

Solve this by move all the test exit functions to a new common/exit
file and source that explicitly in the contexts that need it, hence
removing the circular dependency between common/config and common/rc
for defining these functions...

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 check           |  2 ++
 common/config   | 16 +---------------
 common/exit     | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 common/preamble |  1 +
 common/rc       | 22 ----------------------
 5 files changed, 52 insertions(+), 37 deletions(-)
 create mode 100644 common/exit

diff --git a/check b/check
index d6bab8b5f..69866b14b 100755
--- a/check
+++ b/check
@@ -52,6 +52,8 @@ rm -f $tmp.list $tmp.tmp $tmp.grep $here/$iam.out $tmp.report.* $tmp.arglist
 SRC_GROUPS="generic"
 export SRC_DIR="tests"
 
+. ./common/exit
+
 usage()
 {
     echo "Usage: $0 [options] [testlist]"'
diff --git a/common/config b/common/config
index eada39717..5081c300a 100644
--- a/common/config
+++ b/common/config
@@ -40,6 +40,7 @@
 #
 
 . common/test_names
+. common/exit
 
 # all tests should use a common language setting to prevent golden
 # output mismatches.
@@ -96,15 +97,6 @@ export LOCAL_CONFIGURE_OPTIONS=${LOCAL_CONFIGURE_OPTIONS:=--enable-readline=yes}
 
 export RECREATE_TEST_DEV=${RECREATE_TEST_DEV:=false}
 
-# This functions sets the exit code to status and then exits. Don't use
-# exit directly, as it might not set the value of "$status" correctly, which is
-# used as an exit code in the trap handler routine set up by the check script.
-_exit()
-{
-	test -n "$1" && status="$1"
-	exit "$status"
-}
-
 # Handle mkfs.$fstyp which does (or does not) require -f to overwrite
 set_mkfs_prog_path_with_opts()
 {
@@ -121,12 +113,6 @@ set_mkfs_prog_path_with_opts()
 	fi
 }
 
-_fatal()
-{
-    echo "$*"
-    _exit 1
-}
-
 export MKFS_PROG="$(type -P mkfs)"
 [ "$MKFS_PROG" = "" ] && _fatal "mkfs not found"
 
diff --git a/common/exit b/common/exit
new file mode 100644
index 000000000..16777507a
--- /dev/null
+++ b/common/exit
@@ -0,0 +1,48 @@
+##/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (c) 2000-2006 Silicon Graphics, Inc.  All Rights Reserved.
+#
+# Test termination functions that need to be independent of the context that the
+# test is running in. This must not have any dependencies on common/config or
+# common/rc, as they both require these functions to be defined before they are
+# sourced.
+
+# Exit a context, setting up the test exit status if appropriate.
+#
+# "$status" is the exit code for the trap handler routine set up by the check
+# script, hence we cannot call exit directly from contexts that require $status
+# to be set.
+_exit()
+{
+	test -n "$1" && status="$1"
+	exit "$status"
+}
+
+# Bail out of a test context, setting up .notrun file. Need to kill the
+# filesystem check files here, otherwise they are set incorrectly for the next
+# test.
+_notrun()
+{
+    echo "$*" > $seqres.notrun
+    echo "$seq not run: $*"
+    rm -f ${RESULT_DIR}/require_test*
+    rm -f ${RESULT_DIR}/require_scratch*
+
+    _exit 0
+}
+
+# Exit a test immediately with a fatal error.
+_fail()
+{
+    echo "$*" | tee -a $seqres.full
+    echo "(see $seqres.full for details)"
+    _exit 1
+}
+
+# Exit any context with a fatal error.
+_fatal()
+{
+    echo "$*"
+    _exit 1
+}
+
diff --git a/common/preamble b/common/preamble
index ba029a347..0b684cc33 100644
--- a/common/preamble
+++ b/common/preamble
@@ -49,6 +49,7 @@ _begin_fstest()
 
 	_register_cleanup _cleanup
 
+	. ./common/exit
 	. ./common/rc
 	init_rc
 
diff --git a/common/rc b/common/rc
index 12a05cb96..94c00d890 100644
--- a/common/rc
+++ b/common/rc
@@ -1798,28 +1798,6 @@ _do()
     return $ret
 }
 
-# bail out, setting up .notrun file. Need to kill the filesystem check files
-# here, otherwise they are set incorrectly for the next test.
-#
-_notrun()
-{
-    echo "$*" > $seqres.notrun
-    echo "$seq not run: $*"
-    rm -f ${RESULT_DIR}/require_test*
-    rm -f ${RESULT_DIR}/require_scratch*
-
-    _exit 0
-}
-
-# just plain bail out
-#
-_fail()
-{
-    echo "$*" | tee -a $seqres.full
-    echo "(see $seqres.full for details)"
-    _exit 1
-}
-
 #
 # Tests whether $FSTYP should be exclude from this test.
 #
-- 
2.45.2