maxdesc() — Get socket numbers to extend beyond the default range
Standards
| Standards / Extensions | C or C++ | Dependencies |
|---|---|---|
| z/OS® UNIX | both |
Format
#define _OPEN_SYS_SOCK_EXT
#include <sys/types.h>
#include <sys/socket.h>
int maxdesc(int *totdesc, int *inetdesc);General description
Bulk mode sockets are not supported. Do not use this function.
Returned value
If successful, maxdesc() returns 0.
If unsuccessful, maxdesc() returns -1 and sets errno to one of
the following values:
- Error Code
- Description
- EALREADY
- Your program called maxdesc() after creating a socket, after a call to setibmsockopt(), or after a previous call to maxdesc().
- EFAULT
- Using the totdesc parameter as specified results in an attempt to access storage outside of the caller's address space, or storage not modifiable by the caller.
- ENOMEM
- Your address space has insufficient storage.