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Added a separate tag encoding for the mtree

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This helps with debugging and can avoid weird issues if a file btree
ever accidentally ends up attached to id -1 (due to fs bug).

Though a separate encoding isn't strictly necessary, maybe this should
be reverted at some point.
This commit is contained in:
Christopher Haster
2023-06-18 02:37:22 -05:00
parent f2c36efdb3
commit 2467d2e486
4 changed files with 48 additions and 24 deletions
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6
scripts/dbgbtree.py
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@@ -11,7 +11,6 @@ import struct
TAG_NULL = 0x0000
TAG_SUPERMAGIC = 0x0003
TAG_SUPERCONFIG = 0x0004
TAG_MROOT = 0x0304
TAG_NAME = 0x0100
TAG_BRANCH = 0x0100
TAG_REG = 0x0101
@@ -20,7 +19,9 @@ TAG_STRUCT = 0x0300
TAG_INLINED = 0x0300
TAG_BLOCK = 0x0302
TAG_BTREE = 0x0303
TAG_MROOT = 0x0304
TAG_MDIR = 0x0305
TAG_MTREE = 0x0306
TAG_UATTR = 0x0400
TAG_ALT = 0x4000
TAG_ALTA = 0x6000
@@ -136,8 +137,9 @@ def tagrepr(tag, w, size, off=None):
'inlined' if tag == TAG_INLINED
else 'block' if tag == TAG_BLOCK
else 'btree' if tag == TAG_BTREE
else 'mdir' if tag == TAG_MROOT
else 'mroot' if tag == TAG_MROOT
else 'mdir' if tag == TAG_MDIR
else 'mtree' if tag == TAG_MTREE
else 'struct 0x%02x' % (tag & 0xff),
' w%d' % w if w else '',
size)