closedir (BPX1CLD, BPX4CLD) — Close a directory

Function

The closedir callable service closes a directory.

Requirements

Operation Environment
Authorization: Supervisor state or problem state, any PSW key
Dispatchable unit mode: Task
Cross memory mode: PASN = HASN
AMODE (BPX1CLD): 31-bit
AMODE (BPX4CLD): 64-bit
ASC mode: Primary mode
Interrupt status: Enabled for interrupts
Locks: Unlocked
Control parameters: All parameters must be addressable by the caller and in the primary address space.

Format

CALL BPX1CLD,(Directory_file_descriptor,
              Return_value,
              Return_code,
              Reason_code)

AMODE 64 callers use BPX4CLD with the same parameters.

Parameters

Directory_file_descriptor
Supplied parameter
Type:
Integer
Length:
Fullword

The name of a fullword that contains the directory file descriptor that was returned when the directory was opened.

Return_value
Returned parameter
Type:
Integer
Length:
Fullword

The name of a fullword in which the closedir service returns 0 if the request is successful, or -1 if it is not successful.

Return_code
Returned parameter
Type:
Integer
Length:
Fullword
The name of a fullword in which the closedir service stores the return code. The closedir service returns Return_code only if Return_value is -1. See z/OS UNIX System Services Messages and Codes for a complete list of possible return code values. The closedir service can return one of the following values in the Return_code parameter:
Return_code Explanation
EBADF The Directory_file_descriptor parameter does not represent an open directory.
EINTR The service was interrupted by a signal while it was processing a closedir request. The directory may or may not be closed.
Reason_code
Returned parameter
Type:
Integer
Length:
Fullword

The name of a fullword in which the closedir service stores the reason code. The closedir service returns Reason_code only if Return_value is -1. Reason_code further qualifies the Return_code value. For the reason codes, see z/OS UNIX System Services Messages and Codes.

Related services

Characteristics and restrictions

There are no restrictions on the use of the closedir service.

Examples

For an example using this callable service, see BPX1CLD (closedir) example.

Parent topic: Callable services descriptions