From: Sheng Yong <shengyo...@xiaomi.com>

Signed-off-by: Sheng Yong <shengyo...@xiaomi.com>
---
 tests/f_dentry_dup_dots/README    | 11 +++++++
 tests/f_dentry_dup_dots/expect.in | 26 ++++++++++++++++
 tests/f_dentry_dup_dots/script    | 49 +++++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 tests/f_dentry_dup_dots/README
 create mode 100644 tests/f_dentry_dup_dots/expect.in
 create mode 100644 tests/f_dentry_dup_dots/script

diff --git a/tests/f_dentry_dup_dots/README b/tests/f_dentry_dup_dots/README
new file mode 100644
index 000000000000..e36526625ca6
--- /dev/null
+++ b/tests/f_dentry_dup_dots/README
@@ -0,0 +1,11 @@
+1. create f2fs image
+2. mount f2fs
+3. create a directory, and create a file in it
+4. inject dot dentry in the directory by changing its d_ino to the dotdot's ino
+5. fsck fixes the dot's d_ino
+6. inject dotdot dentry in the directory by changing its d_ino to the dot's ino
+7. fsck fixes the dotdot's d_ino
+8. inject dot dentry in the directory by changing its filename to ".."
+9. fsck fixes it by deleting duplicated dotdot dentry and adding a new dot 
dentry
+10. inject dotdot dentry in the directory by changing its filename to "."
+11. fsck fixes it by deleting duplicated dot dentry and adding a new dotdot 
dentry
diff --git a/tests/f_dentry_dup_dots/expect.in 
b/tests/f_dentry_dup_dots/expect.in
new file mode 100644
index 000000000000..5af443df7d12
--- /dev/null
+++ b/tests/f_dentry_dup_dots/expect.in
@@ -0,0 +1,26 @@
+Info: Force to fix corruption
+[ASSERT] (__chk_dots_dentries:x)  --> Bad inode number[_PINO_HEX_] for '.', 
parent_ino is [_INO_HEX_]
+Info: Force to fix corruption
+Info: Force to fix corruption
+[ASSERT] (__chk_dots_dentries:x)  --> Bad inode number[_INO_HEX_] for '..', 
parent parent ino is [_PINO_HEX_]
+Info: Force to fix corruption
+Info: Force to fix corruption
+[ASSERT] (__chk_dots_dentries:x)  --> Bad inode number[_INO_HEX_] for '..', 
parent parent ino is [_PINO_HEX_]
+[ASSERT] (__chk_dentries:x)  --> More than one '..', should delete the extra 
one, i: 1, ino:_PINO_DEC_
+[ASSERT] (fsck_chk_inode_blk:x)  --> ino: _INO_HEX_ has no '.' and/or '..' 
dirents, dot: 0, dotdot: 1
+[FIX] (fsck_chk_inode_blk:x)  --> convert inline dentry ino: _INO_DEC_, pino: 
_PINO_DEC_, ret: 0
+[FIX] (fsck_chk_inode_blk:x)  --> add missing '.' dirent in ino: _INO_DEC_, 
pino: _PINO_DEC_, ret:0
+[fsck_chk_quota_files:x] Fixing Quota file ([  0] ino [0x4])
+[FIX] (nullify_nat_entry:x)  --> Remove nid [0x4] in NAT
+[fsck_chk_quota_files:x] Fixing Quota file ([  1] ino [0x5])
+[FIX] (nullify_nat_entry:x)  --> Remove nid [0x5] in NAT
+[fsck_chk_quota_files:x] Fixing Quota file ([  2] ino [0x6])
+[FIX] (nullify_nat_entry:x)  --> Remove nid [0x6] in NAT
+Info: Force to fix corruption
+Info: Force to fix corruption
+[ASSERT] (__chk_dots_dentries:x)  --> Bad inode number[_PINO_HEX_] for '.', 
parent_ino is [_INO_HEX_]
+[ASSERT] (__chk_dentries:x)  --> More than one '.', should delete the extra 
one, i: 1, ino:_INO_DEC_
+[ASSERT] (fsck_chk_inode_blk:x)  --> ino: _INO_HEX_ has no '.' and/or '..' 
dirents, dot: 1, dotdot: 0
+[FIX] (fsck_chk_inode_blk:x)  --> convert inline dentry ino: _INO_DEC_, pino: 
_PINO_DEC_, ret: 0
+[FIX] (fsck_chk_inode_blk:x)  --> add missing '..' dirent in ino: _INO_DEC_, 
pino: _PINO_DEC_, ret:0
+Info: Force to fix corruption
diff --git a/tests/f_dentry_dup_dots/script b/tests/f_dentry_dup_dots/script
new file mode 100644
index 000000000000..881bb50f8705
--- /dev/null
+++ b/tests/f_dentry_dup_dots/script
@@ -0,0 +1,49 @@
+#!/bin/bash
+
+DESC="directory duplicated dot or dotdot"
+
+. $TOPDIR/tests/helpers
+
+cleanup
+make_f2fs > $LOG
+
+mkdir $TESTDIR/mntdir
+safe_mount $MNT_OPTS $META $TESTDIR/mntdir >> $LOG
+mkdir $TESTDIR/mntdir/testdir
+touch $TESTDIR/mntdir/testdir/testfile
+ino=`stat -c "%i" $TESTDIR/mntdir/testdir`
+pino=`stat -c "%i" $TESTDIR/mntdir/testdir/..`
+safe_umount $TESTDIR/mntdir >> $LOG
+rm -rf  $TESTDIR/mntdir
+
+echo "ino:$ino pino:$pino" >> $LOG
+
+# inject dot's d_ino
+$INJECT --dent --nid $ino --mb d_ino --dots 1 --val $pino $META >> $LOG
+$FSCK $FSCK_OPTS -f $META > $OUT
+$FSCK $FSCK_OPTS -f $META >> $OUT
+
+# inject dotdot's d_ino
+$INJECT --dent --nid $ino --mb d_ino --dots 2 --val $ino $META >> $LOG
+$FSCK $FSCK_OPTS -f $META >> $OUT
+$FSCK $FSCK_OPTS -f $META >> $OUT
+
+# inject dot's filename
+$INJECT --dent --nid $ino --mb filename --dots 1 --str ".." $META >> $LOG
+$FSCK $FSCK_OPTS -f $META >> $OUT
+$FSCK $FSCK_OPTS -f $META >> $OUT
+
+# inject dotdot's filename
+$INJECT --dent --nid $ino --mb filename --dots 2 --str "." $META >> $LOG
+$FSCK $FSCK_OPTS -f $META >> $OUT
+$FSCK $FSCK_OPTS -f $META >> $OUT
+cat $OUT >> $LOG
+
+INO_HEX=`printf "0x%x" $ino`
+PINO_HEX=`printf "0x%x" $pino`
+sed "s/_INO_DEC_/$ino/g" $TESTDIR/expect.in > $TESTDIR/expect
+sed -i "s/_PINO_DEC_/$pino/g" $TESTDIR/expect
+sed -i "s/_INO_HEX_/$INO_HEX/g" $TESTDIR/expect
+sed -i "s/_PINO_HEX_/$PINO_HEX/g" $TESTDIR/expect
+
+check_result
-- 
2.43.0



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