explain_snprintf_or_die (3)

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NAME

explain_snprintf_or_die - formatted output conversion and report errors

SYNOPSIS

#include <libexplain/snprintf.h>

int explain_snprintf_or_die(char *data, size_t data_size, const char *format);
int explain_snprintf_on_error(char *data, size_t data_size, const char *format);

DESCRIPTION

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

The explain_snprintf_on_error function is used to call the snprintf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_snprintf(3) function, but still returns to the caller.

data

The data, exactly as to be passed to the snprintf(3) system call.

data_size

The data_size, exactly as to be passed to the snprintf(3) system call.

format

The format, exactly as to be passed to the snprintf(3) system call.

RETURN VALUE

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

The explain_snprintf_on_error function always returns the value return by the wrapped snprintf(3) system call.

EXAMPLE

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

int result = explain_snprintf_or_die(data, data_size, format);

SEE ALSO

snprintf(3)

formatted output conversion

explain_snprintf(3)

explain snprintf(3) errors

exit(2)

terminate the calling process

COPYRIGHT

libexplain version 0.52
Copyright (C) 2010 Peter Miller

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