Hi,
I'm trying to figure out why my files are all allocated with huge fileid.
Setup:
- root filesystem is formatted to APFS
- macOS version High Sierra.
For some reason, all my files are allocated with fileid that is added to
offset of `0x200000000`
For example, create new file `/tmp/1` and getting its attributes will
produce
-> *stat /tmp/1*
16777220 *8595046795* -rw-r--r-- 2 demouser wheel 0 7237 "Mar 21
16:42:57 2018" "Mar 21 16:42:36 2018" "Mar 21 16:42:36 2018" "Mar 21
14:29:12 2018" 4194304 16 0 /tmp/1
(8595046795 is 0x200000000 in hex)
Furthermore, if I search for valid inode ABOVE this offset in /.vol/ mount
drive, I find plenty, but below there are none.
for x in {1..10000}; do stat /.vol/${filesystemid}/$((0x200000000-x)) >>
/dev/null 2&>1 && echo "fileid $x + 0x200000000 exit"; done
fileid 115 + 0x200000000 exit
fileid 116 + 0x200000000 exit
fileid 139 + 0x200000000 exit
fileid 140 + 0x200000000 exit
fileid 141 + 0x200000000 exit
fileid 142 + 0x200000000 exit
fileid 144 + 0x200000000 exit
fileid 145 + 0x200000000 exit
fileid 146 + 0x200000000 exit
fileid 147 + 0x200000000 exit
fileid 149 + 0x200000000 exit
Is there any rigorous API to retrieve this offset ? where can I find it ?
looked for in APFS header but didn't find an appropriate field.
thanks
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