fuzz: for fuzzing the rtrmapbt, find the path to the rt rmap btree file

The fs population code creates a realtime rmap btree in /some/ realtime
group with at least two levels.  This rmapbt file isn't necessarily the
one for group 0, so we need to find it programmatically.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/common/xfs b/common/xfs
index 1a0ececde3942262e4b0f89b546cad885d9f0d60..1be8cbf1c563d9b3a7157cbc5e60807f0f4da04c 100644 (file)
--- a/common/xfs
+++ b/common/xfs
@@ -1827,6 +1827,39 @@ _scratch_xfs_find_agbtree_height() {
        return 1
 }
 
+# Find us the path to the inode containing a realtime btree with a specific
+# height.
+_scratch_xfs_find_rgbtree_height() {
+       local bt_type="$1"
+       local bt_height="$2"
+       local rgcount=$(_xfs_mount_rgcount $SCRATCH_DEV)
+       local path
+       local path_format
+       local bt_prefix
+
+       case "${bt_type}" in
+       "rmap")
+               path_format="/rtgroups/%u.rmap"
+               bt_prefix="u3.rtrmapbt"
+               ;;
+       *)
+               _fail "Don't know about rt btree ${bt_type}"
+               ;;
+       esac
+
+       for ((rgno = 0; rgno < rgcount; rgno++)); do
+               path="$(printf "${path_format}" "${rgno}")"
+               bt_level=$(_scratch_xfs_db -c "path -m ${path}" -c "p ${bt_prefix}.level" | awk '{print $3}')
+               # "level" is the actual level within the btree
+               if [ "${bt_level}" -eq "$((bt_height - 1))" ]; then
+                       echo "${path}"
+                       return 0
+               fi
+       done
+
+       return 1
+}
+
 _require_xfs_mkfs_atomicswap()
 {
        # atomicswap can be activated on rmap or reflink filesystems.

diff --git a/tests/xfs/406 b/tests/xfs/406
index 7a6e8bdb535237eaac2465880151d0d39ae29c73..0219f4a2f2562e3d724a3a78bcfb5832a3f9bb38 100755 (executable)
--- a/tests/xfs/406
+++ b/tests/xfs/406
@@ -24,10 +24,12 @@ _require_scratch_xfs_fuzz_fields
 echo "Format and populate"
 _scratch_populate_cached nofill > $seqres.full 2>&1
 
-inode_ver=$(_scratch_xfs_get_metadata_field "core.version" 'sb 0' 'addr rrmapino')
+path="$(_scratch_xfs_find_rgbtree_height 'rmap' 2)" || \
+       _fail "could not find two-level rtrmapbt"
+inode_ver=$(_scratch_xfs_get_metadata_field "core.version" "path -m $path")
 
 echo "Fuzz rtrmapbt recs"
-_scratch_xfs_fuzz_metadata '' 'offline' 'sb 0' 'addr rrmapino' "addr u${inode_ver}.rtrmapbt.ptrs[1]" >> $seqres.full
+_scratch_xfs_fuzz_metadata '' 'offline' "path -m $path" "addr u${inode_ver}.rtrmapbt.ptrs[1]" >> $seqres.full
 echo "Done fuzzing rtrmapbt recs"
 
 # success, all done

diff --git a/tests/xfs/407 b/tests/xfs/407
index 035578b97b4793548713c7c5192707dbc12538ab..1eff49218a86bf40f0c26d4319731447f2cc4776 100755 (executable)
--- a/tests/xfs/407
+++ b/tests/xfs/407
@@ -24,10 +24,12 @@ _require_scratch_xfs_fuzz_fields
 echo "Format and populate"
 _scratch_populate_cached nofill > $seqres.full 2>&1
 
-inode_ver=$(_scratch_xfs_get_metadata_field "core.version" 'sb 0' 'addr rrmapino')
+path="$(_scratch_xfs_find_rgbtree_height 'rmap' 1)" || \
+       _fail "could not find two-level rtrmapbt"
+inode_ver=$(_scratch_xfs_get_metadata_field "core.version" "path -m $path")
 
 echo "Fuzz rtrmapbt recs"
-_scratch_xfs_fuzz_metadata '' 'online' 'sb 0' 'addr rrmapino' "addr u${inode_ver}.rtrmapbt.ptrs[1]" >> $seqres.full
+_scratch_xfs_fuzz_metadata '' 'online' "path -m $path" "addr u${inode_ver}.rtrmapbt.ptrs[1]" >> $seqres.full
 echo "Done fuzzing rtrmapbt recs"
 
 # success, all done

diff --git a/tests/xfs/408 b/tests/xfs/408
index 3c7d16f0e6c6b7c64c7f6ed06bc3fd142b3096b5..1d41fd0923ae4ad967ce281e46e28d9207ad7696 100755 (executable)
--- a/tests/xfs/408
+++ b/tests/xfs/408
@@ -4,7 +4,7 @@
 #
 # FS QA Test No. 408
 #
-# Populate a XFS filesystem and fuzz every rtrmapbt keyptr field.
+# Populate a XFS filesystem and fuzz every rtrmapbt key/pointer field.
 # Use xfs_repair to fix the corruption.
 #
 . ./common/preamble
@@ -24,8 +24,11 @@ _require_scratch_xfs_fuzz_fields
 echo "Format and populate"
 _scratch_populate_cached nofill > $seqres.full 2>&1
 
+path="$(_scratch_xfs_find_rgbtree_height 'rmap' 2)" || \
+       _fail "could not find two-level rtrmapbt"
+
 echo "Fuzz rtrmapbt keyptrs"
-_scratch_xfs_fuzz_metadata '(rtrmapbt)' 'offline' 'sb 0' 'addr rrmapino' >> $seqres.full
+_scratch_xfs_fuzz_metadata '(rtrmapbt)' 'offline' "path -m $path" >> $seqres.full
 echo "Done fuzzing rtrmapbt keyptrs"
 
 # success, all done

diff --git a/tests/xfs/409 b/tests/xfs/409
index f3885e56010daad7f2b8b7c6dcf8814542fef5cf..f863b3bd4530cecc088d0b0b8f1bef23effa882d 100755 (executable)
--- a/tests/xfs/409
+++ b/tests/xfs/409
@@ -4,7 +4,7 @@
 #
 # FS QA Test No. 409
 #
-# Populate a XFS filesystem and fuzz every rtrmapbt keyptr field.
+# Populate a XFS filesystem and fuzz every rtrmapbt key/pointer field.
 # Use xfs_scrub to fix the corruption.
 #
 . ./common/preamble
@@ -24,8 +24,11 @@ _require_scratch_xfs_fuzz_fields
 echo "Format and populate"
 _scratch_populate_cached nofill > $seqres.full 2>&1
 
+path="$(_scratch_xfs_find_rgbtree_height 'rmap' 2)" || \
+       _fail "could not find two-level rtrmapbt"
+
 echo "Fuzz rtrmapbt keyptrs"
-_scratch_xfs_fuzz_metadata '(rtrmapbt)' 'offline' 'sb 0' 'addr rrmapino' >> $seqres.full
+_scratch_xfs_fuzz_metadata '(rtrmapbt)' 'online' "path -m $path" >> $seqres.full
 echo "Done fuzzing rtrmapbt keyptrs"
 
 # success, all done

diff --git a/tests/xfs/481 b/tests/xfs/481
index 43eb14aafb29030628ef360b6ea5e5a522f760b9..a3010a7617795731e4cb5122a6c0a8bd579165cd 100755 (executable)
--- a/tests/xfs/481
+++ b/tests/xfs/481
@@ -25,10 +25,12 @@ _disable_dmesg_check
 echo "Format and populate"
 _scratch_populate_cached nofill > $seqres.full 2>&1
 
-inode_ver=$(_scratch_xfs_get_metadata_field "core.version" 'sb 0' 'addr rrmapino')
+path="$(_scratch_xfs_find_rgbtree_height 'rmap' 2)" || \
+       _fail "could not find two-level rtrmapbt"
+inode_ver=$(_scratch_xfs_get_metadata_field "core.version" "path -m $path")
 
 echo "Fuzz rtrmapbt recs"
-_scratch_xfs_fuzz_metadata '' 'none' 'sb 0' 'addr rrmapino' "addr u${inode_ver}.rtrmapbt.ptrs[1]" >> $seqres.full
+_scratch_xfs_fuzz_metadata '' 'none' "path -m $path" "addr u${inode_ver}.rtrmapbt.ptrs[1]" >> $seqres.full
 echo "Done fuzzing rtrmapbt recs"
 
 # success, all done

diff --git a/tests/xfs/482 b/tests/xfs/482
index 2b08b9aab2bb01cd8675a1f5422fdceb5ffaaa84..d0386448564b7c37a0a26f87c586ab7dad94a0dd 100755 (executable)
--- a/tests/xfs/482
+++ b/tests/xfs/482
@@ -4,7 +4,7 @@
 #
 # FS QA Test No. 482
 #
-# Populate a XFS filesystem and fuzz every rtrmapbt keyptr field.
+# Populate a XFS filesystem and fuzz every rtrmapbt key/pointer field.
 # Do not fix the filesystem, to test metadata verifiers.
 
 . ./common/preamble
@@ -25,8 +25,11 @@ _disable_dmesg_check
 echo "Format and populate"
 _scratch_populate_cached nofill > $seqres.full 2>&1
 
+path="$(_scratch_xfs_find_rgbtree_height 'rmap' 2)" || \
+       _fail "could not find two-level rtrmapbt"
+
 echo "Fuzz rtrmapbt keyptrs"
-_scratch_xfs_fuzz_metadata '(rtrmapbt)' 'offline' 'sb 0' 'addr rrmapino' >> $seqres.full
+_scratch_xfs_fuzz_metadata '(rtrmapbt)' 'offline' "path -m $path" >> $seqres.full
 echo "Done fuzzing rtrmapbt keyptrs"
 
 # success, all done