DosQSysInfo

This call returns values of static system variables.

DosQSysInfo

(Index, DataBuf, DataBufLen)

Index (USHORT) - input

Ordinal of the system variable to return.

Index = 0 indicates maximum path length. The maximum path length is returned in the first word of the DataBuf.

DataBuf (PBYTE) - output
Address where the system returns the variable value.
DataBufLen (USHORT) - input
Length of the data buffer.
rc (USHORT) - return
Return code descriptions include:
• NO_ERROR 87
  ERROR_INVALID_PARAMETER
  111
  ERROR_BUFFER_OVERFLOW
  Remarks

  An OS/2 application may want to reference file objects managed by an installable file system that supports long file names. Because some installable file systems may support longer names than others, an application should issue DosQSysInfo upon initialization.

  DosQSysInfo returns the maximum path length supported by the file system currently installed. The path length includes the drive specifier (d:), the leading "\" and the trailing null character.

  The value returned by DosQSysInfo can be used to allocate buffers for storing path names returned by requests, for example, to DosFindFirst and DosFindNext.

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