[PATCH] xfs: test quota's project ID on special files

[Andrey Albershteyn <aalbersh@xxxxxxxxxx>]

With addition of FS_IOC_FSSETXATTRAT xfs_quota now can set project
ID on filesystem inodes behind special files. Previously, quota
reporting didn't count inodes of special files created before
project initialization. Only new inodes had project ID set.

Signed-off-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx>
---

Notes:
    This is part of the patchset which introduces
    FS_IOC_FS[GET|SET]XATTRAT:
    https://lore.kernel.org/linux-xfs/20240520164624.665269-2-aalbersh@xxxxxxxxxx/T/#t
    https://lore.kernel.org/linux-xfs/20240520165200.667150-2-aalbersh@xxxxxxxxxx/T/#u

 tests/xfs/608     | 73 +++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/608.out | 10 +++++++
 2 files changed, 83 insertions(+)
 create mode 100755 tests/xfs/608
 create mode 100644 tests/xfs/608.out

diff --git a/tests/xfs/608 b/tests/xfs/608
new file mode 100755
index 000000000000..3573c764c5f4
--- /dev/null
+++ b/tests/xfs/608
@@ -0,0 +1,73 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024 Red Hat.  All Rights Reserved.
+#
+# FS QA Test 608
+#
+# Test that XFS can set quota project ID on special files
+#
+. ./common/preamble
+_begin_fstest auto quota
+
+# Override the default cleanup function.
+_cleanup()
+{
+	cd /
+	rm -r -f $tmp.*
+	rm -f $tmp.proects $tmp.projid
+}
+
+
+# Import common functions.
+. ./common/quota
+. ./common/filter
+
+# Modify as appropriate.
+_supported_fs xfs
+_require_scratch
+_require_xfs_quota
+_require_user
+
+_scratch_mkfs >/dev/null 2>&1
+_qmount_option "pquota"
+_scratch_mount
+_require_test_program "af_unix"
+_require_symlinks
+_require_mknod
+
+function create_af_unix () {
+	$here/src/af_unix $* || echo af_unix failed
+}
+
+function filter_quota() {
+	_filter_quota | sed "s~$tmp.proects~PROJECTS_FILE~"
+}
+
+projectdir=$SCRATCH_MNT/prj
+id=42
+
+mkdir $projectdir
+mkfifo $projectdir/fifo
+mknod $projectdir/chardev c 1 1
+mknod $projectdir/blockdev b 1 1
+create_af_unix $projectdir/socket
+touch $projectdir/foo
+ln -s $projectdir/foo $projectdir/symlink
+touch $projectdir/bar
+ln -s $projectdir/bar $projectdir/broken-symlink
+rm -f $projectdir/bar
+
+$XFS_QUOTA_PROG -D $tmp.proects -P $tmp.projid -x \
+	-c "project -sp $projectdir $id" $SCRATCH_DEV | filter_quota
+$XFS_QUOTA_PROG -D $tmp.proects -P $tmp.projid -x \
+	-c "limit -p isoft=20 ihard=20 $id " $SCRATCH_DEV | filter_quota
+$XFS_QUOTA_PROG -D $tmp.proects -P $tmp.projid -x \
+	-c "project -cp $projectdir $id" $SCRATCH_DEV | filter_quota
+$XFS_QUOTA_PROG -D $tmp.proects -P $tmp.projid -x \
+	-c "report -inN -p" $SCRATCH_DEV
+$XFS_QUOTA_PROG -D $tmp.proects -P $tmp.projid -x \
+	-c "project -Cp $projectdir $id" $SCRATCH_DEV | filter_quota
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/608.out b/tests/xfs/608.out
new file mode 100644
index 000000000000..c3d56c3c7682
--- /dev/null
+++ b/tests/xfs/608.out
@@ -0,0 +1,10 @@
+QA output created by 608
+Setting up project 42 (path SCRATCH_MNT/prj)...
+Processed 1 (PROJECTS_FILE and cmdline) paths for project 42 with recursion depth infinite (-1).
+Checking project 42 (path SCRATCH_MNT/prj)...
+Processed 1 (PROJECTS_FILE and cmdline) paths for project 42 with recursion depth infinite (-1).
+#0                   3          0          0     00 [--------]
+#42                  8         20         20     00 [--------]
+
+Clearing project 42 (path SCRATCH_MNT/prj)...
+Processed 1 (PROJECTS_FILE and cmdline) paths for project 42 with recursion depth infinite (-1).
-- 
2.42.0