gethostname

Synopsis

#include <unistd.h>

int gethostname(char *name, size_t namelen);

Status

Implemented

Conformance

IEEE Std 1003.1-2017

Description

The gethostname() function shall return the standard host name for the current machine. The namelen argument shall specify the size of the array pointed to by the name argument. The returned name shall be null-terminated, except that if namelen is an insufficient length to hold the host name, then the returned name shall be truncated, and it is unspecified whether the returned name is null-terminated. In Phoenix-RTOS a truncated name is not null-terminated.

Host names are limited to HOST_NAME_MAX bytes.

The host name is set with sethostname(). Until it is set, the host name is an empty string.

Return value

Upon successful completion, 0 shall be returned; otherwise, -1 shall be returned.

Errors

No errors are defined.

POSIX deviations

No POSIX deviations discovered.