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Hello, Anyone know of relevant documentation that captures the difference between vfsStruct.f_fsid and fstat.st_ino ? sys/stat.h declares: ino_t st_ino; /* [XSI] File serial number */ AND sys/statvfs.h declares: unsigned long f_fsid; /* Filesystem ID */ Based on some tests, it seems that the st_ino is the number/inode_number that the filesystem identifies the file-resource by ? I observed that this number gets a unique value when I copy a file even when the Finder/FS utilizes the Space-Saver feature of MacOS. This value is identical to the results returned by the command ls "-i" . When copying via Finder, I am seeing distinct st_ino values for source and destination files. f_fsid seems to be identifying the File differently though, perhaps taking into account what Data/attributes objects the file resource points to ? I observed that this number gets an identical value when I copy a file even when the Finder/FS utilizes the Space-Saver feature of MacOS. So, the value of f_fsid seems to be copied over to the destination file record. Also, I could not find a way to display f_fsid via the ls command. On a related note, Any documentation regarding MacOS Finder/FS's Space-Saver feature or how it is implemented ? Thanks, Vikram.S.Warraich

Hello, I am running into a strange issue with the ODQueryCreateWithNode() call on an account that has Mobile Login switched on a Mac OS Big Sur system. AFAIK, the issue does not occur on Mac OS Catalina or below. Somehow, OD/DS are reporting more than 1 Primary Group for the account. The setup is, Mac OS Big Sur. Machine bound to AD Server. Mobile Login checkbox checked in Directory Services. The tool queries via ODQueryCreateWithNode() call passing in the given uid_t and next on its results, it iterates and ask for items with Attribute kODAttributeTypePrimaryGroupID via the ODRecordCopyValues() call for each item. Strangely, the result is more than 1 unique Primary Group being reported among the results of ODQueryCreateWithNode call. The tool reports: user belongs to primary Group: 20 user belongs to primary Group: 110233109 Also, the id command when run from Terminal on the same system reports, id -gn staff id uid=110233109 gid=20(staff) ..... The tool links OpenDirectory Framework and Directory Services Framework. #import OpenDirectory/OpenDirectory.h #import DirectoryService/DirectoryService.h QUESTION As per the internet, a user can belong to ONLY 1 primary group. Even if this is theoretically possible, why is the code reporting the issue only on Big Sur ? Also, if there are multiple values reported for Primary group, which is the value that should take effect ? Is it the first reported value in the Array of results ? Regards, Vikram.