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explain_snprintf_or_die(3) Library Functions Manual explain_snprintf_or_die(3) 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, ob- tained from the explain_snprintf(3) function, and then the process ter- minates 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, ob- tained 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) sys- tem 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 fash- ion 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 1.3 Copyright (C) 2010 Peter Miller explain_snprintf_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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