The following errors are returned from the FileOps functions.
| Constant | Code | Description |
|---|---|---|
| kFileOpsNoOperation | 999 | Operation not supported on this platform |
| kFileOpsUnknownError | 998 | Unknown error |
| kFileOpsCrossDeviceLink | 100 | The system cannot move the file to a different device |
| kFileOpsOutOfMemory | 12 | Out of memory |
| kFileOpsParamError | 1 | Too few parameters passed |
| kFileOpsOK | 0 | No Error |
| kFileOpsDirFull | -33 | File/Directory full |
| kFileOpsDiskFull | 101206 | Disk full |
| kFileOpsVolumeNotFound | -35 | Specified volume does not exist |
| kFileOpsDiskIOError | -36 | Disk I/O error |
| kFileOpsBadName | -37 | Bad file name or volume name (perhaps zero-length) |
| kFileOpsFileNotOpen | 101202 | File not open |
| kFileOpsEndOfFile | 101207 | Logical end-of-file reached during read operation |
| kFileOpsPositionBeforeStart | -40 | Attempt to position before the start of the file |
| kFileOpsTooManyFilesOpen | -42 | Too many files open |
| kFileOpsFileNotFound | 101201 | File not found |
| kFileOpsHardwareVolumeLock | -44 | Volume is locked by a hardware setting |
| kFileOpsFileLocked | 101205 | File is locked |
| kFileOpsSoftwareVolumeLock | -46 | Volume is locked by a software flag |
| kFileOpsMoreFilesOpen | -47 | One or more files are open |
| kFileOpsAlreadyExists | 101215 | A file with the specified name already exists |
| kFileOpsAlreadyWriteOpen | -49 | Only one access path to a file can allow writing |
| kFileOpsNoDefaultVolume | -50 | No default volume |
| kFileOpsVolumeNotOnline | -53 | Volume not on-line |
| kFileOpsPermissionDenied | 101203 | Permission denied. |
| kFileOpsReadOnlyFile | -54 | Read only file |
| kFileOpsVolumeAlreadyMounted | -55 | Specified volume is already mounted and on-line |
| kFileOpsBadDrive | -56 | No such drive number |
| kFileOpsInvalidFormat | -57 | Volume lacks Macintosh-format directory |
| kFileOpsExternalSystemError | -58 | External file system error |
| kFileOpsProblemDuringRename | -59 | Problem during rename |
| kFileOpsBadMasterBlock | -60 | Master directory block is bad; must re-initialize volume |
| kFileOpsCantOpenLockedFile | -61 | Cannot open a locked file |
| kFileOpsDirectoryNotFound | -120 | Directory not found |
| kFileOpsTooManyDirOpen | -121 | Too many working directories open |
| kFileOpsCantMoveToOffspring | -122 | Attempted to move into offspring |
| kFileOpsNonHFSOperation | -123 | Attempt to do HFS operation on a non-HFS volume |
| kFileOpsInternalSystemError | -127 | Internal file system error |