Hi Jean-Pierre, > >> getfattr simply fails with EIO when I try to issue the commands you > >> requested. I did run ntfsinfo on the symlinks though. I have included > > > > That is strange. Maybe you did not use the -h option of fgetattr ? It seems the ntfs-3g packaged by Debian was not functioning properly. With the tarball you gave me it works properly.
> > I have uploaded to > https://jp-andre.pagesperso-orange.fr/ntfs-3g_ntfsprogs-2017.3.23AB.6-2.tgz > a test version of ntfs-3g with support for WSL-type symlinks. > This variant is enabled by using the mount option : > special_files=wsl > Both the Interix symlinks and the WSL ones are recognized > irrespective of the option being used. The option only acts > on new symlinks being created. > > Please test it, and report. Thanks! I'll test it and report back. > > The sockets, fifos, character and block devices are also > implemented the same way.... but I have no valid example > of how WSL implements them, so this is probably plain wrong. > > Would you please use WSL to create some of them and post > their ntfsinfo description : > > mknod path/fifo p > mknod path/chr c 0x123 0x456 > mknod path/blk b 0x234 0x567 WSL encodes fifos and block/character device files using NTFS extended attributes. (For that matter, any file can have such extended attributes attached to it, in order to encode properties such as its permissions within WSL.) You can find more details about these here: [0] I've created a test disk image here: https://ocf.io/kpengboy/links.img It contains several files: - symlink: a symlink with the contents "abcéж我☃" - symlink-with-metadata: same as above, but with the WSL metadata attached in the NTFS extended attributes - fifo - block, char: with major and minor numbers as requested in your email - stream-socket-maybe: I tried to bind a Unix socket to a file and this is the result. I may or may not have done it correctly. The result may or may not be meaningful. [0] https://docs.microsoft.com/en-us/windows/wsl/file-permissions For completeness, I post the ntfsinfo of fifo, block, and char below: $ src/ntfs-3g_ntfsprogs-2017.3.23AB.6/ntfsprogs/ntfsinfo -F fifo links.img Dumping Inode 35 (0x23) Upd. Seq. Array Off.: 48 (0x30) Upd. Seq. Array Count: 3 (0x3) Upd. Seq. Number: 3 (0x3) LogFile Seq. Number: 0x102caa MFT Record Seq. Numb.: 1 (0x1) Number of Hard Links: 1 (0x1) Attribute Offset: 56 (0x38) MFT Record Flags: IN_USE Bytes Used: 440 (0x1b8) bytes Bytes Allocated: 1024 (0x400) bytes Next Attribute Instance: 6 (0x6) MFT Padding: 00 00 Dumping attribute $STANDARD_INFORMATION (0x10) from mft record 35 (0x23) Resident: Yes Attribute flags: 0x0000 Attribute instance: 0 (0x0) Data size: 72 (0x48) Resident flags: 0x00 File Creation Time: Sun Jan 10 10:34:55 2021 UTC File Altered Time: Sun Jan 10 10:34:55 2021 UTC MFT Changed Time: Sun Jan 10 10:34:55 2021 UTC Last Accessed Time: Sun Jan 10 10:34:55 2021 UTC File attributes: ARCHIVE REPARSE_POINT UNKNOWN: 0x00040000 (0x00040420) Maximum versions: 0 Version number: 0 Class ID: 0 User ID: 0 (0x0) Security ID: 260 (0x104) Quota charged: 0 (0x0) Update Sequence Number: 0 (0x0) Dumping attribute $FILE_NAME (0x30) from mft record 35 (0x23) Resident: Yes Attribute flags: 0x0000 Attribute instance: 2 (0x2) Data size: 74 (0x4a) Resident flags: 0x01 Parent directory: 5 (0x5) File Creation Time: Sun Jan 10 10:34:55 2021 UTC File Altered Time: Sun Jan 10 10:34:55 2021 UTC MFT Changed Time: Sun Jan 10 10:34:55 2021 UTC Last Accessed Time: Sun Jan 10 10:34:55 2021 UTC Allocated Size: 0 (0x0) Data Size: 0 (0x0) Filename Length: 4 (0x4) File attributes: ARCHIVE (0x00000020) Namespace: POSIX Filename: 'fifo' Dumping attribute $DATA (0x80) from mft record 35 (0x23) Resident: Yes Attribute flags: 0x0000 Attribute instance: 1 (0x1) Data size: 0 (0x0) Resident flags: 0x00 Dumping attribute $REPARSE_POINT (0xc0) from mft record 35 (0x23) Resident: Yes Attribute flags: 0x0000 Attribute instance: 3 (0x3) Data size: 8 (0x8) Resident flags: 0x00 Reparse tag: 0x80000024 (Linux fifo) Data length: 0 (0x0) Data: (NONE) Dumping attribute $EA_INFORMATION (0xd0) from mft record 35 (0x23) Resident: Yes Attribute flags: 0x0000 Attribute instance: 4 (0x4) Data size: 8 (0x8) Resident flags: 0x00 Packed EA length: 45 (0x2d) NEED_EA count: 0 (0x0) Unpacked EA length: 60 (0x3c) Dumping attribute $EA (0xe0) from mft record 35 (0x23) Resident: Yes Attribute flags: 0x0000 Attribute instance: 5 (0x5) Data size: 60 (0x3c) Resident flags: 0x00 End of inode reached $ src/ntfs-3g_ntfsprogs-2017.3.23AB.6/ntfsprogs/ntfsinfo -F block links.img Dumping Inode 36 (0x24) Upd. Seq. Array Off.: 48 (0x30) Upd. Seq. Array Count: 3 (0x3) Upd. Seq. Number: 3 (0x3) LogFile Seq. Number: 0x181045 MFT Record Seq. Numb.: 2 (0x2) Number of Hard Links: 1 (0x1) Attribute Offset: 56 (0x38) MFT Record Flags: IN_USE Bytes Used: 464 (0x1d0) bytes Bytes Allocated: 1024 (0x400) bytes Next Attribute Instance: 6 (0x6) MFT Padding: 00 00 Dumping attribute $STANDARD_INFORMATION (0x10) from mft record 36 (0x24) Resident: Yes Attribute flags: 0x0000 Attribute instance: 0 (0x0) Data size: 72 (0x48) Resident flags: 0x00 File Creation Time: Wed Jan 13 08:40:56 2021 UTC File Altered Time: Wed Jan 13 08:40:56 2021 UTC MFT Changed Time: Wed Jan 13 08:40:56 2021 UTC Last Accessed Time: Wed Jan 13 08:40:56 2021 UTC File attributes: ARCHIVE REPARSE_POINT UNKNOWN: 0x00040000 (0x00040420) Maximum versions: 0 Version number: 0 Class ID: 0 User ID: 0 (0x0) Security ID: 260 (0x104) Quota charged: 0 (0x0) Update Sequence Number: 0 (0x0) Dumping attribute $FILE_NAME (0x30) from mft record 36 (0x24) Resident: Yes Attribute flags: 0x0000 Attribute instance: 2 (0x2) Data size: 76 (0x4c) Resident flags: 0x01 Parent directory: 5 (0x5) File Creation Time: Wed Jan 13 08:40:56 2021 UTC File Altered Time: Wed Jan 13 08:40:56 2021 UTC MFT Changed Time: Wed Jan 13 08:40:56 2021 UTC Last Accessed Time: Wed Jan 13 08:40:56 2021 UTC Allocated Size: 0 (0x0) Data Size: 0 (0x0) Filename Length: 5 (0x5) File attributes: ARCHIVE (0x00000020) Namespace: POSIX Filename: 'block' Dumping attribute $DATA (0x80) from mft record 36 (0x24) Resident: Yes Attribute flags: 0x0000 Attribute instance: 1 (0x1) Data size: 0 (0x0) Resident flags: 0x00 Dumping attribute $REPARSE_POINT (0xc0) from mft record 36 (0x24) Resident: Yes Attribute flags: 0x0000 Attribute instance: 3 (0x3) Data size: 8 (0x8) Resident flags: 0x00 Reparse tag: 0x80000026 (Linux block device) Data length: 0 (0x0) Data: (NONE) Dumping attribute $EA_INFORMATION (0xd0) from mft record 36 (0x24) Resident: Yes Attribute flags: 0x0000 Attribute instance: 4 (0x4) Data size: 8 (0x8) Resident flags: 0x00 Packed EA length: 64 (0x40) NEED_EA count: 0 (0x0) Unpacked EA length: 84 (0x54) Dumping attribute $EA (0xe0) from mft record 36 (0x24) Resident: Yes Attribute flags: 0x0000 Attribute instance: 5 (0x5) Data size: 84 (0x54) Resident flags: 0x00 End of inode reached $ src/ntfs-3g_ntfsprogs-2017.3.23AB.6/ntfsprogs/ntfsinfo -F char links.img Dumping Inode 37 (0x25) Upd. Seq. Array Off.: 48 (0x30) Upd. Seq. Array Count: 3 (0x3) Upd. Seq. Number: 2 (0x2) LogFile Seq. Number: 0x181190 MFT Record Seq. Numb.: 2 (0x2) Number of Hard Links: 1 (0x1) Attribute Offset: 56 (0x38) MFT Record Flags: IN_USE Bytes Used: 464 (0x1d0) bytes Bytes Allocated: 1024 (0x400) bytes Next Attribute Instance: 6 (0x6) MFT Padding: 00 00 Dumping attribute $STANDARD_INFORMATION (0x10) from mft record 37 (0x25) Resident: Yes Attribute flags: 0x0000 Attribute instance: 0 (0x0) Data size: 72 (0x48) Resident flags: 0x00 File Creation Time: Wed Jan 13 08:41:05 2021 UTC File Altered Time: Wed Jan 13 08:41:05 2021 UTC MFT Changed Time: Wed Jan 13 08:41:05 2021 UTC Last Accessed Time: Wed Jan 13 08:41:05 2021 UTC File attributes: ARCHIVE REPARSE_POINT UNKNOWN: 0x00040000 (0x00040420) Maximum versions: 0 Version number: 0 Class ID: 0 User ID: 0 (0x0) Security ID: 260 (0x104) Quota charged: 0 (0x0) Update Sequence Number: 0 (0x0) Dumping attribute $FILE_NAME (0x30) from mft record 37 (0x25) Resident: Yes Attribute flags: 0x0000 Attribute instance: 2 (0x2) Data size: 74 (0x4a) Resident flags: 0x01 Parent directory: 5 (0x5) File Creation Time: Wed Jan 13 08:41:05 2021 UTC File Altered Time: Wed Jan 13 08:41:05 2021 UTC MFT Changed Time: Wed Jan 13 08:41:05 2021 UTC Last Accessed Time: Wed Jan 13 08:41:05 2021 UTC Allocated Size: 0 (0x0) Data Size: 0 (0x0) Filename Length: 4 (0x4) File attributes: ARCHIVE (0x00000020) Namespace: POSIX Filename: 'char' Dumping attribute $DATA (0x80) from mft record 37 (0x25) Resident: Yes Attribute flags: 0x0000 Attribute instance: 1 (0x1) Data size: 0 (0x0) Resident flags: 0x00 Dumping attribute $REPARSE_POINT (0xc0) from mft record 37 (0x25) Resident: Yes Attribute flags: 0x0000 Attribute instance: 3 (0x3) Data size: 8 (0x8) Resident flags: 0x00 Reparse tag: 0x80000025 (Linux character device) Data length: 0 (0x0) Data: (NONE) Dumping attribute $EA_INFORMATION (0xd0) from mft record 37 (0x25) Resident: Yes Attribute flags: 0x0000 Attribute instance: 4 (0x4) Data size: 8 (0x8) Resident flags: 0x00 Packed EA length: 64 (0x40) NEED_EA count: 0 (0x0) Unpacked EA length: 84 (0x54) Dumping attribute $EA (0xe0) from mft record 37 (0x25) Resident: Yes Attribute flags: 0x0000 Attribute instance: 5 (0x5) Data size: 84 (0x54) Resident flags: 0x00 End of inode reached Best, Kevin _______________________________________________ ntfs-3g-devel mailing list ntfs-3g-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ntfs-3g-devel
