What option of mount.cifs specifies the local owner of files on a mounted CIFS share?

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The option in mount.cifs that specifies the local owner of files on a mounted CIFS share is the uid option. This parameter allows you to set the user ID for the files on the mounted share, effectively determining which local user will be recognized as the owner of those files. When you mount a CIFS share, the files from the share may not have the same ownership properties as the local system's users and groups. By using the uid option, you can specify which local user ID (or UID) will be assigned as the owner for all the files and directories on that specific CIFS mount.

For instance, if you mount a CIFS share intended for use by a specific user, utilizing the uid option ensures that this user has the appropriate ownership of the files, which helps maintain the integrity of file permissions and access control within the local system.

Other options do not serve this purpose; for example, the owner option is not a valid parameter for mount.cifs. The user option may allow authentication to the CIFS share but does not control file ownership. Similarly, local_user is not a recognized option for assigning file ownership on the mounted share. Therefore, uid is the correct choice for specifying the local owner of files on a mounted CIFS