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SerCeMan avatar SerCeMan commented on June 16, 2024

Hey, @evial! I think enabling debugging logs might help to understand the issue, you can find an example here (last argument):

jnr-fuse/src/main/java/ru/serce/jnrfuse/examples/HelloFuse.java

Line 92 in fa0a00f

stub.mount(Paths.get(path), true, true);

from jnr-fuse.

evial avatar evial commented on June 16, 2024

Thanks @SerCeMan for the tip. Actually, I had already enabled the fuse debug but I didn't find anything relevant. Below the output when opening the file "hot/test/hello.txt" in the shared folder:

java[TID=5194]: FFFFC108A4617630: >>Create [KT---C] "\hot\test", FILE_OPEN, CreateOptions=1, FileAttributes=10, Security=NULL, AllocationSize=0:0, AccessToken=0000000000001DC8[PID=4], DesiredAccess=a0, GrantedAccess=0, ShareAccess=3
java[TID=5194]: FFFFC108A4617630: <<Create IoStatus=0[1] UserContext=0000000000000000:0000027D72A73A20, GrantedAccess=a0, FileInfo={FileAttributes=10, ReparseTag=0, AllocationSize=0:0, FileSize=0:0, CreationTime=2021-06-21T09:05:53.000Z, LastAccessTime=2021-06-21T09:05:53.000Z, LastWriteTime=2021-06-21T09:05:53.000Z, ChangeTime=2021-06-21T09:05:53.000Z, IndexNumber=0:0}
java[TID=5194]: FFFFC108A4615690: >>Create [UT---C] "\hot\test", FILE_OPEN, CreateOptions=100, FileAttributes=0, Security=NULL, AllocationSize=0:0, AccessToken=0000000000001F8C[PID=4], DesiredAccess=100080, GrantedAccess=0, ShareAccess=7
java[TID=5194]: FFFFC108A4615690: <<Create IoStatus=0[1] UserContext=0000000000000000:0000027D72A73810, GrantedAccess=100080, FileInfo={FileAttributes=10, ReparseTag=0, AllocationSize=0:0, FileSize=0:0, CreationTime=2021-06-21T09:05:53.000Z, LastAccessTime=2021-06-21T09:05:53.000Z, LastWriteTime=2021-06-21T09:05:53.000Z, ChangeTime=2021-06-21T09:05:53.000Z, IndexNumber=0:0}
java[TID=5194]: FFFFC108A4617630: >>QuerySecurity 0000000000000000:0000027D72A73810
java[TID=5194]: FFFFC108A4617630: <<QuerySecurity IoStatus=0[0] Security="O:WDG:WDD:P(A;;FA;;;WD)(A;;0x1201ef;;;WD)(A;;0x1201ef;;;WD)"
java[TID=5194]: FFFFC108A4629A00: >>Close 0000000000000000:0000027D72A73810
java[TID=5194]: FFFFC108A4629A00: <<Close IoStatus=0[0]
java[TID=5194]: FFFFC108A5B463D0: >>Create [UT---C] "\hot\test\hello.txt", FILE_OPEN, CreateOptions=200100, FileAttributes=0, Security=NULL, AllocationSize=0:0, AccessToken=0000000000001F64[PID=4], DesiredAccess=80, GrantedAccess=0, ShareAccess=7
java[TID=5194]: FFFFC108A5B463D0: <<Create IoStatus=0[1] UserContext=0000000000000000:0000027D72A738D0, GrantedAccess=80, FileInfo={FileAttributes=0, ReparseTag=0, AllocationSize=0:1000, FileSize=0:24, CreationTime=2021-06-21T09:06:15.000Z, LastAccessTime=2021-06-21T09:06:15.000Z, LastWriteTime=2021-06-21T18:02:16.000Z, ChangeTime=2021-06-21T09:06:15.000Z, IndexNumber=0:0}
java[TID=5194]: FFFFC108A5B463D0: >>QuerySecurity 0000000000000000:0000027D72A738D0
java[TID=5194]: FFFFC108A5B463D0: <<QuerySecurity IoStatus=0[0] Security="O:WDG:WDD:P(A;;0x1f01bf;;;WD)(A;;0x1201af;;;WD)(A;;0x1201af;;;WD)"
java[TID=5194]: FFFFC108A46330F0: >>Close 0000000000000000:0000027D72A738D0
java[TID=5194]: FFFFC108A46330F0: <<Close IoStatus=0[0]
java[TID=5194]: FFFFC108A4620760: >>Create [UT---C] "\hot\test\hello.txt", FILE_OPEN, CreateOptions=140, FileAttributes=0, Security=NULL, AllocationSize=0:0, AccessToken=0000000000001F88[PID=4], DesiredAccess=120089, GrantedAccess=0, ShareAccess=7
java[TID=5194]: FFFFC108A4620760: <<Create IoStatus=0[1] UserContext=0000000000000000:0000027D72A73360, GrantedAccess=120089, FileInfo={FileAttributes=0, ReparseTag=0, AllocationSize=0:1000, FileSize=0:24, CreationTime=2021-06-21T09:06:15.000Z, LastAccessTime=2021-06-21T09:06:15.000Z, LastWriteTime=2021-06-21T18:02:16.000Z, ChangeTime=2021-06-21T09:06:15.000Z, IndexNumber=0:0}
java[TID=5194]: FFFFC108A5B463D0: >>QuerySecurity 0000000000000000:0000027D72A73360
java[TID=5194]: FFFFC108A5B463D0: <<QuerySecurity IoStatus=0[0] Security="O:WDG:WDD:P(A;;0x1f01bf;;;WD)(A;;0x1201af;;;WD)(A;;0x1201af;;;WD)"
java[TID=5194]: FFFFC10899BFDA70: >>Read 0000000000000000:0000027D72A73360, Address=0000027D7AD70000, Offset=0:0, Length=4096, Key=0
java[TID=5194]: FFFFC10899BFDA70: <<Read IoStatus=0[36]

The read method is called at the end but no SMB read request is issued by the client (cannot see any in Wireshark) so I think this read is not aimed to return the file content. Anyway, no content data is sent back to the client before it shows the error message. Compared with the debug from a successfull read (from a Linux SMB client), the only difference I noticed is the value of the ShareAccess field in the FILE_OPEN: ShareAccess=7 (fail) vs ShareAccess=3 (success). I have no idea what it means.

from jnr-fuse.

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