HP 3000 Manuals HP 3000 Manuals
Aoptions
Similar to the fop structure, the aop structure provides access to the
aoptions used in FOPEN. It is defined as:
struct aop {
unsigned short reserved:3; /* reserved for MPE/iX */
unsigned short copy:1; /* copy open mode */
unsigned short no_wait:1; /* I/O without wait */
unsigned short multi:2; /* multi-access mode */
unsigned short no_buf:1; /* no buffering */
unsigned short exclusive:2; /* exclusive access flag */
unsigned short locking:1; /* allow locking */
unsigned short multirecord:1; /* multi-record flag */
unsigned short access:4; /* mode of access */
};
Also, a typedef that defines a union type named aoptions is provided:
typedef union {
struct aop as;
unsigned short av;
} aoptions;
If variable a is declared as being type aoptions, then a.av accesses the
unsigned short version of the aoptions while a.as accesses the structural
definition of the aoptions.