IOFlags Namespace Reference

Enumerations
enum	OpenMode {   OpenRead = 1, OpenWrite = 2, OpenNonBlock = 4, OpenAppend = 8,   OpenUnbuffered = 16, OpenCreate = 32, OpenExclusive = 64, OpenTruncate = 128,   OpenNotCTTY = 256 }
	File open mode flags. More...

Enumeration Type Documentation

enum IOFlags::OpenMode

File open mode flags.

Enumerator
OpenRead
OpenWrite
OpenNonBlock
OpenAppend
OpenUnbuffered
OpenCreate
OpenExclusive
OpenTruncate
OpenNotCTTY

Definition at line 7 of file IOFlags.h.

  {
    OpenRead        = 1,    /*< Open for read access.  */
    OpenWrite       = 2,    /*< Open for write access.  */
    OpenNonBlock    = 4,    /*< Open in non-blocking mode.
                    Neither the #open() nor any
                    subsequent operation on the
                    returned descriptor cause the
                    process to wait.  Applied to
                    opening a named pipe (a FIFO)
                    allows the pipe to be opened
                    without waiting for the other end
                    to be connected.  */
    OpenAppend      = 8,    /*< Writes to the file should always
                    append to the end of the file.  */
    OpenUnbuffered  = 16,   /*< No write caching should be done on
                    this file; may result in blocking
                    the process until the data has
                    actually been written.  */
    OpenCreate      = 32,   /*< Create the file if it does not exist.  */
    OpenExclusive   = 64,   /*< With #ModeCreate specifies that
                    the creation should fali if the
                    file exists.  */
    OpenTruncate    = 128,  /*< If the file exists, truncate it to
                    zero size.  */
    OpenNotCTTY     = 256   /*< If the specified file is a
                    terminal device, do not make it
                    the controlling terminal for the
                    process even if the process does
                    not have one yet.  */
  };