libexplain/gethostbyname_or_die.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/netdb.h>
#include <libexplain/gethostbyname.h>
#include <libexplain/output.h>

Go to the source code of this file.

Functions
struct hostent *	explain_gethostbyname_or_die (const char *name)
struct hostent *	explain_gethostbyname_on_error (const char *name)

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Function Documentation

struct hostent* explain_gethostbyname_on_error

(

const char *

name

)

[read]

The explain_gethostbyname_on_error function is used to call the gethostbyname(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_gethostbyname(3) function.

Parameters:

name	The name, exactly as to be passed to the gethostbyname(3) system call.

Returns:

The value returned by the wrapped gethostbyname(3) system call.

Example:

This function is intended to be used in a fashion similar to the following example:

 struct hostent *result = explain_gethostbyname_on_error(name);
 if (!result)
 {
     ...cope with error
     ...no need to print error message
 }

Definition at line 41 of file gethostbyname_or_die.c.

struct hostent* explain_gethostbyname_or_die

(

const char *

name

)

[read]

The explain_gethostbyname_or_die function is used to call the gethostbyname(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_gethostbyname(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

Parameters:

name	The name, exactly as to be passed to the gethostbyname(3) system call.

Returns:

This function only returns on success, see gethostbyname(3) for more information. On failure, prints an explanation and exits, it does not return.

Example:

This function is intended to be used in a fashion similar to the following example:

 struct hostent *result = explain_gethostbyname_or_die(name);

Definition at line 27 of file gethostbyname_or_die.c.