unable to share /tmp and /etc directories from linux to windows using ksmbd-tool

[vishnumotghare-eaton]

Hello All,

I’m encountering an issue while trying to share the /etc or /tmp directories from my Linux system and access them from Windows. Despite following the steps outlined in the ksmbd-tools usage guide, I am unable to successfully share these directories. Interestingly, I can share subdirectories like '/etc/settings' or '/tmp/settings', but not the main '/etc' or '/tmp' directory itself.

Here is my current configuration:

[global]
        ; global parameters
        log file = /var/log/ksmbd.log
        server string = ksmbd Server
        workgroup = WORKGROUP

[MyShare]
        ; share parameters
        force group = root
        force user = root
        path = /etc
        read only = no

Error message from windows:

Has anyone else faced a similar issue or have any suggestions on how to resolve this? Any help would be greatly appreciated!

[namjaejeon]

@vishnumotghare-eaton Is this issue also coming with the latest ksmbd? What is the Windows version?

[vishnumotghare-eaton]

@namjaejeon This issue is also present with the latest ksmbd. I have tested it on both Windows 11 and Windows 10, and the problem persists on both versions. When I try to open the shared location from File Explorer, I receive a more detailed error message with better information. I'm using 5.15.163 kernel version

Ksmbd kernel log messages:

[11063.019677] ksmbd: RFC1002 header 114 bytes
[11063.019744] ksmbd: skip to check tree connect request
[11063.019752] ksmbd: SMB2 data length 42 offset 72
[11063.019758] ksmbd: SMB2 len 114
[11063.019807] ksmbd: tree connect request for tree ipc$ treename \\192.168.119.248\IPC$
[11063.030445] ksmbd: IPC share path request
[11063.030475] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.034697] ksmbd: RFC1002 header 176 bytes
[11063.034787] ksmbd: SMB2 data length 48 offset 128
[11063.034797] ksmbd: SMB2 len 176
[11063.034858] ksmbd: get query maximal access context
[11063.035003] ksmbd: Error response: c000000d
[11063.035014] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.038330] ksmbd: RFC1002 header 132 bytes
[11063.038427] ksmbd: SMB2 data length 12 offset 120
[11063.038439] ksmbd: SMB2 len 132
[11063.038492] ksmbd: IPC pipe create request
[11063.040999] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.043806] ksmbd: RFC1002 header 104 bytes
[11063.043878] ksmbd: SMB2 data length 0 offset 104
[11063.043887] ksmbd: SMB2 len 105
[11063.043925] ksmbd: GOT query info request
[11063.043930] ksmbd: GOT SMB2_O_INFO_FILE
[11063.043934] ksmbd: FileInfoClass 5, FileId 0x0
[11063.043941] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.046607] ksmbd: RFC1002 header 104 bytes
[11063.046675] ksmbd: SMB2 data length 0 offset 104
[11063.046683] ksmbd: SMB2 len 105
[11063.046722] ksmbd: GOT query info request
[11063.046726] ksmbd: GOT SMB2_O_INFO_FILE
[11063.046730] ksmbd: FileInfoClass 24, FileId 0x0
[11063.046736] ksmbd: smb2_info_file_pipe for 24 not supported
[11063.046741] ksmbd: error while processing smb2 query rc = -95
[11063.046746] ksmbd: Failed to process 16 [-95]
[11063.046751] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.051169] ksmbd: RFC1002 header 272 bytes
[11063.051238] ksmbd: SMB2 data length 160 offset 112
[11063.051247] ksmbd: SMB2 len 272
[11063.051294] ksmbd: IPC pipe write request
[11063.051622] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.054447] ksmbd: RFC1002 header 113 bytes
[11063.054511] ksmbd: SMB2 data length 0 offset 0
[11063.054518] ksmbd: SMB2 len 113
[11063.054557] ksmbd: IPC pipe read request
[11063.055234] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.066697] ksmbd: RFC1002 header 224 bytes
[11063.071478] ksmbd: SMB2 data length 104 offset 120
[11063.071506] ksmbd: SMB2 len 224
[11063.072305] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.079385] ksmbd: RFC1002 header 88 bytes
[11063.079452] ksmbd: SMB2 len 88
[11063.079494] ksmbd: IPC pipe close request
[11063.079857] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.098347] ksmbd: RFC1002 header 232 bytes
[11063.098578] ksmbd: SMB2 data length 104 offset 128
[11063.098590] ksmbd: SMB2 len 232
[11063.098642] ksmbd: get query maximal access context
[11063.098678] ksmbd: Error response: c000000d
[11063.098687] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.106313] ksmbd: RFC1002 header 232 bytes
[11063.106791] ksmbd: RFC1002 header 248 bytes
[11063.107053] ksmbd: SMB2 data length 104 offset 128
[11063.107064] ksmbd: SMB2 len 232
[11063.107112] ksmbd: get query maximal access context
[11063.107148] ksmbd: Error response: c000000d
[11063.107156] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.107278] ksmbd: SMB2 data length 104 offset 144
[11063.107288] ksmbd: SMB2 len 248
[11063.107324] ksmbd: converted name = desktop.ini
[11063.107332] ksmbd: get query maximal access context
[11063.107639] ksmbd: can not get linux path for desktop.ini, rc = -2
[11063.107653] ksmbd: Error response: c0000034
[11063.107659] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.111104] ksmbd: RFC1002 header 232 bytes
[11063.111239] ksmbd: SMB2 data length 104 offset 128
[11063.111248] ksmbd: SMB2 len 232
[11063.111300] ksmbd: get query maximal access context
[11063.111334] ksmbd: Error response: c000000d
[11063.111342] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.115727] ksmbd: RFC1002 header 232 bytes
[11063.115795] ksmbd: SMB2 data length 104 offset 128
[11063.115803] ksmbd: SMB2 len 232
[11063.115854] ksmbd: get query maximal access context
[11063.115885] ksmbd: Error response: c000000d
[11063.115892] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.121771] ksmbd: RFC1002 header 232 bytes
[11063.121841] ksmbd: SMB2 data length 104 offset 128
[11063.121849] ksmbd: SMB2 len 232
[11063.121975] ksmbd: get query maximal access context
[11063.122011] ksmbd: Error response: c000000d
[11063.122021] ksmbd: credits: requested[1] granted[1] total_granted[107]
[11063.124361] ksmbd: RFC1002 header 176 bytes
[11063.124407] ksmbd: SMB2 data length 48 offset 128
[11063.124414] ksmbd: SMB2 len 176
[11063.124445] ksmbd: get query maximal access context
[11063.124471] ksmbd: Error response: c000000d
[11063.124477] ksmbd: credits: requested[1] granted[1] total_granted[107]

[vishnumotghare-eaton]

@namjaejeon I misunderstood your comment and tested with the latest ksmd-tools instead of ksmbd. After checking with the latest ksmbd code, I was able to mount /etc and other directories successfully. Thank you for your support

[namjaejeon]

@vishnumotghare-eaton Can you tell what is the latest ksmbd code ? It is in linux-5.15.177 ? or github ksmbd master branch ?

[vishnumotghare-eaton]

@namjaejeon It worked with the GitHub ksmbd master branch (commit 64073dd44d8abe4baeff2278010f18231f583ed1). I also tested it with the linux-5.15.177 kernel source, it did not work.

[vishnumotghare-eaton]

@namjaejeon Will this fix be available for the 5.15.x version? I’m not sure which commits from the master branch address the issue, but I can find them. Is it okay if I backport the fix to the 5.15.x kernel and create a PR for it?”