DosSetFileMode

This call changes the mode (attribute) of the specified file.

DosSetFileMode

(FileName, NewAttribute, Reserved)

FileName (PSZ) - input

Address of the file path name.

DosQSysInfo is called by an application during initialization to determine the maximum path length allowed by OS/2.

NewAttribute (USHORT) - input
File's new attribute. File attributes are defined as follows:

Bit

Description
15-6
Reserved and must be zero.
5
File archive
4
Subdirectory
3
Volume label
2
System file (excluded from normal directory searches)
1
Hidden file
0
Read only file
These bits may be set individually or in combination. For example, an attribute value of 0021H (bits 5 and 0 set to 1) indicates a read-only file that should be archived.
Reserved (ULONG) - input
Reserved must be set to zero.
rc (USHORT) - return
Return code descriptions are:
• NO_ERROR 2
  ERROR_FILE_NOT_FOUND
  3
  ERROR_PATH_NOT_FOUND
  5
  ERROR_ACCESS_DENIED
  26
  ERROR_NOT_DOS_DISK
  32
  ERROR_SHARING_VIOLATION
  36
  ERROR_SHARING_BUFFER_EXCEEDED
  87
  ERROR_INVALID_PARAMETER
  108
  ERROR_DRIVE_LOCKED
  206
  ERROR_FILENAME_EXCED_RANGE
  Remarks

  Attributes for Volume Label (0008H) and Subdirectory (0010H) cannot be changed using DosSetFileMode. If these attributes are specified, ERROR_INVALID_PARAMETER is returned.

  DosQFileMode is used to query the current settings for file attributes. Calling DosQFSInfo obtains volume label information.

  Attributes of root directories cannot be changed using DosSetFileMode. If these attributes are specified, ERROR_ACCESS_DENIED is returned.

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