[fuse-devel] Input/output error while mounting a read only directory

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Hello,

So I am trying to create a read only file system in FUSE,which "reads" a
file system structure from an archived file, and mounts different
sub-directories and files. I have written the code for readdir and getattr
so far. I am able to now view my sub directories and files from my
mountpoint. Yet , everytime I do an "ls" from within the mountpoint , I get
the following error :

*ls: reading directory .: Input/output error*

What is this error ? Any pointers ? I am attaching my dump below :

FUSE library version: 2.8.4
nullpath_ok: 0
unique: 1, opcode: INIT (26), nodeid: 0, insize: 56
INIT: 7.14
flags=0x0000007b
max_readahead=0x00020000
   INIT: 7.12
   flags=0x00000011
   max_readahead=0x00020000
   max_write=0x00020000
   unique: 1, success, outsize: 40
unique: 2, opcode: OPENDIR (27), nodeid: 1, insize: 48
   unique: 2, success, outsize: 32
unique: 3, opcode: LOOKUP (1), nodeid: 1, insize: 47
LOOKUP /.Trash
getattr /.Trash
   NODEID: 2
   unique: 3, success, outsize: 144
unique: 4, opcode: LOOKUP (1), nodeid: 2, insize: 45
LOOKUP /.Trash/1000
getattr /.Trash/1000
   NODEID: 3
   unique: 4, success, outsize: 144
unique: 5, opcode: LOOKUP (1), nodeid: 3, insize: 46
LOOKUP /.Trash/1000/files
getattr /.Trash/1000/files
   NODEID: 4
   unique: 5, success, outsize: 144
unique: 6, opcode: OPENDIR (27), nodeid: 4, insize: 48
   unique: 6, success, outsize: 32
unique: 7, opcode: READDIR (28), nodeid: 4, insize: 80
readdir[0] from 0
ash/.Trash/1000/files
Entry not found
unique: 8, opcode: LOOKUP (1), nodeid: 1, insize: 45
LOOKUP /BDMV
getattr /BDMV
   NODEID: 5
   unique: 8, success, outsize: 144
unique: 9, opcode: LOOKUP (1), nodeid: 5, insize: 45
LOOKUP /BDMV/META
getattr /BDMV/META
   NODEID: 6
   unique: 9, success, outsize: 144
unique: 10, opcode: LOOKUP (1), nodeid: 1, insize: 57
LOOKUP /.xdg-volume-info
getattr /.xdg-volume-info
   NODEID: 7
   unique: 10, success, outsize: 144
unique: 11, opcode: OPENDIR (27), nodeid: 7, insize: 48
   unique: 11, success, outsize: 32
unique: 12, opcode: RELEASEDIR (29), nodeid: 7, insize: 64
   unique: 12, success, outsize: 16
unique: 13, opcode: LOOKUP (1), nodeid: 1, insize: 52
LOOKUP /autorun.inf
getattr /autorun.inf
   NODEID: 8
   unique: 13, success, outsize: 144
unique: 14, opcode: READDIR (28), nodeid: 1, insize: 80
readdir[0] from 0
ash
/
rootname is file1 /
rootname is prt /
unique: 15, opcode: LOOKUP (1), nodeid: 6, insize: 43
LOOKUP /BDMV/META/DL
getattr /BDMV/META/DL
   NODEID: 9
   unique: 15, success, outsize: 144
unique: 16, opcode: LOOKUP (1), nodeid: 9, insize: 53
LOOKUP /BDMV/META/DL/bdmt_eng.xml
getattr /BDMV/META/DL/bdmt_eng.xml
   NODEID: 10
   unique: 16, success, outsize: 144
unique: 17, opcode: OPENDIR (27), nodeid: 10, insize: 48
   unique: 17, success, outsize: 32
unique: 18, opcode: RELEASEDIR (29), nodeid: 10, insize: 64
   unique: 18, success, outsize: 16
   unique: 7, success, outsize: 16
   unique: 14, success, outsize: 168
unique: 19, opcode: RELEASEDIR (29), nodeid: 4, insize: 64
unique: 20, opcode: READDIR (28), nodeid: 1, insize: 80
   unique: 20, success, outsize: 40
   unique: 19, success, outsize: 16
unique: 21, opcode: LOOKUP (1), nodeid: 1, insize: 52
LOOKUP /.Trash-1000
getattr /.Trash-1000
   NODEID: 11
   unique: 21, success, outsize: 144
unique: 22, opcode: LOOKUP (1), nodeid: 1, insize: 46
LOOKUP /file1
getattr /file1
   NODEID: 12
   unique: 22, success, outsize: 144
unique: 23, opcode: LOOKUP (1), nodeid: 11, insize: 46
LOOKUP /.Trash-1000/files
getattr /.Trash-1000/files
   NODEID: 13
   unique: 23, success, outsize: 144
unique: 24, opcode: LOOKUP (1), nodeid: 1, insize: 44
LOOKUP /prt
unique: 25, opcode: OPENDIR (27), nodeid: 13, insize: 48
   unique: 25, success, outsize: 32
getattr /prt
unique: 26, opcode: READDIR (28), nodeid: 13, insize: 80
readdir[0] from 0
   NODEID: 14
rootname is  ash/.Trash-1000/files
   unique: 24, success, outsize: 144
Entry not found
unique: 27, opcode: READDIR (28), nodeid: 1, insize: 80
   unique: 27, success, outsize: 40
unique: 28, opcode: RELEASEDIR (29), nodeid: 1, insize: 64
   unique: 28, success, outsize: 16
unique: 29, opcode: OPENDIR (27), nodeid: 1, insize: 48
   unique: 29, success, outsize: 32
unique: 30, opcode: READDIR (28), nodeid: 1, insize: 80
readdir[0] from 0
ash
/

getattr /BDMV/META
   NODEID: 6
   unique: 9, success, outsize: 144
unique: 10, opcode: LOOKUP (1), nodeid: 1, insize: 57
LOOKUP /.xdg-volume-info
getattr /.xdg-volume-info
   NODEID: 7
   unique: 10, success, outsize: 144
unique: 11, opcode: OPENDIR (27), nodeid: 7, insize: 48
   unique: 11, success, outsize: 32
unique: 12, opcode: RELEASEDIR (29), nodeid: 7, insize: 64
   unique: 12, success, outsize: 16
unique: 13, opcode: LOOKUP (1), nodeid: 1, insize: 52
LOOKUP /autorun.inf
getattr /autorun.inf
   NODEID: 8
   unique: 13, success, outsize: 144
unique: 14, opcode: READDIR (28), nodeid: 1, insize: 80
readdir[0] from 0
ash
/
rootname is file1 /
rootname is prt /
unique: 15, opcode: LOOKUP (1), nodeid: 6, insize: 43
LOOKUP /BDMV/META/DL
getattr /BDMV/META/DL
   NODEID: 9
   unique: 15, success, outsize: 144
unique: 16, opcode: LOOKUP (1), nodeid: 9, insize: 53
LOOKUP /BDMV/META/DL/bdmt_eng.xml
getattr /BDMV/META/DL/bdmt_eng.xml
   NODEID: 10
   unique: 16, success, outsize: 144
unique: 17, opcode: OPENDIR (27), nodeid: 10, insize: 48
   unique: 17, success, outsize: 32
unique: 18, opcode: RELEASEDIR (29), nodeid: 10, insize: 64
   unique: 18, success, outsize: 16
   unique: 7, success, outsize: 16
   unique: 14, success, outsize: 168
unique: 19, opcode: RELEASEDIR (29), nodeid: 4, insize: 64
unique: 20, opcode: READDIR (28), nodeid: 1, insize: 80
   unique: 20, success, outsize: 40
   unique: 19, success, outsize: 16
unique: 21, opcode: LOOKUP (1), nodeid: 1, insize: 52
LOOKUP /.Trash-1000
getattr /.Trash-1000
   NODEID: 11
   unique: 21, success, outsize: 144
unique: 22, opcode: LOOKUP (1), nodeid: 1, insize: 46
LOOKUP /file1
getattr /file1
   NODEID: 12
   unique: 22, success, outsize: 144
unique: 23, opcode: LOOKUP (1), nodeid: 11, insize: 46
LOOKUP /.Trash-1000/files
getattr /.Trash-1000/files
   NODEID: 13
   unique: 23, success, outsize: 144
unique: 24, opcode: LOOKUP (1), nodeid: 1, insize: 44
LOOKUP /prt
unique: 25, opcode: OPENDIR (27), nodeid: 13, insize: 48
....

Thanks a lot in advance,

Vas