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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | COMMAND | NOTES | SEE ALSO | AUTHOR | COLOPHON |
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SMBINFO(1) General Commands Manual SMBINFO(1)
smbinfo - Userspace helper to display SMB-specific file
information for the Linux SMB client file system (CIFS)
smbinfo [-v] [-h] [-V] {command} {file system object}
This tool is part of the cifs-utils suite.
smbinfo is a userspace helper program for the Linux SMB client
file system (CIFS). It is intended to display SMB-specific file
informations such as Security Descriptors and Quota.
This tool works by making an CIFS_QUERY_INFO IOCTL call to the
Linux SMB client which in turn issues a SMB Query Info request and
returns the result. This differs from getcifsacl which uses
extended file attributes.
-v Print version number and exit.
-V Verbose output.
-h Print help explaining the command line options.
fileaccessinfo: Prints the FileAccessInformation class
filealigninfo: Prints the FileAlignmentInformation class
fileallinfo: Prints the FileAllInformation class
filebasicinfo: Prints the FileBasicInformation class
fileeainfo: Prints the FileEaInformation class
filefsfullsizeinfo: Prints the FileFsFullSizeInformation class
fileinternalinfo: Prints the FileInternalInformation class
filemodeinfo: Prints the FileModeInformation class
filepositioninfo: Prints the FilePositionInformation class
filestandardinfo: Prints the FileStandardInformation class
filestreaminfo: Prints the FileStreamInformation class
fsctl-getobjid: Prints the ObjectID
getcompression: Prints the compression setting for the file.
setcompression -c <no|default|lznt1>: Sets the compression setting
for the file.
list-snapshots: Lists the previous versions of the volume that
backs this file
quota: Print the quota for the volume in the form - SID Length -
Change Time - Quota Used - Quota Threshold - Quota Limit - SID
secdesc: Print the security descriptor in the form - Revision -
Control - Owner SID - Group SID - ACL - File types - File flags
keys: Dump session id, encryption keys and decryption keys so that
the SMB3 traffic of this mount can be decryped e.g. via wireshark
(requires root).
gettconinfo: Prints both the TCON Id and Session Id for a cifs
file.
Kernel support for smbinfo utilities requires the CIFS_QUERY_INFO
IOCTL which was initially introduced in the 4.20 kernel and is
only implemented for mount points using SMB2 or above (see
mount.cifs(8) vers option).
mount.cifs(8), getcifsacl(1)
Ronnie Sahlberg wrote the smbinfo program.
The Linux CIFS Mailing list is the preferred place to ask
questions regarding these programs.
This page is part of the LinuxCIFS utils (network filesystem
mounts from Linux (e.g. to Samba, ksmbd, etc.)) project.
Information about the project can be found at
⟨https://wiki.samba.org/index.php/LinuxCIFS_utils⟩. If you have a
bug report for this manual page, send it to
linux-cifs@vger.kernel.org, samba-technical@lists.samba.org. This
page was obtained from the project's upstream Git repository
⟨git://git.samba.org/cifs-utils.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-06-10.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
SMBINFO(1)
Pages that refer to this page: smb2-quota(1)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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