!*** MODULE $SSIODEF ***
!DEC$ OPTIONS/ALIGN=(RECORDS=PACKED,COMMONS=PACKED)/NOWARN
 ! +
 !  File access modes for open and create
 ! -
	PARAMETER SSIO$M_O_RDONLY = '00000000'X	 !  Read-only
	PARAMETER SSIO$M_O_WRONLY = '00000001'X	 !  Write-only
	PARAMETER SSIO$M_O_RDWR = '00000002'X	 !  Read and write
	PARAMETER SSIO$M_O_ACCMODE = '00000003'X  !  Mask for access mode field
 ! +
 !  File status flags for open, create, and setfl (fcntl)
 ! -
	PARAMETER SSIO$M_O_APPEND = '00000008'X	 !  All writes append to EOF
 ! +
 !  File open and create options
 ! -
	PARAMETER SSIO$M_O_CREAT = '00000200'X	 !  Create file if it does not exist
	PARAMETER SSIO$M_O_TRUNC = '00000400'X	 !  Truncate file
	PARAMETER SSIO$M_O_EXCL = '00000800'X	 !  If O_CREAT and O_EXCL both set, open fails if file exists
	PARAMETER SSIO$M_O_NOCTTY = '00001000'X	 !  If TTY dev, not to be controlling TTY for process
 ! +
 !  Positioning (lseek) options
 ! -
	PARAMETER SSIO$C_SEEK_SET = '00000000'X	 !  Set offset to value provided
	PARAMETER SSIO$C_SEEK_CUR = '00000001'X	 !  Offset relative to current position
	PARAMETER SSIO$C_SEEK_END = '00000002'X	 !  Offset relative to current EOF
 ! +
 !  Other miscellaneous values
 ! -
	PARAMETER SSIO$C_SSIZE_MAX = '7FFFFFFF'X  !  Largest read/write size (in bytes) permitted
!DEC$ END OPTIONS