explain_vsprintf_or_die(3) Library Functions Manual explain_vsprintf_or_die(3) NAME explain_vsprintf_or_die - formatted output conversion and report errors SYNOPSIS #include <libexplain/vsprintf.h> int explain_vsprintf_or_die(char *data, const char *format, va_list ap); int explain_vsprintf_on_error(char *data, const char *format, va_list ap); DESCRIPTION The explain_vsprintf_or_die function is used to call the vsprintf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_vsprintf(3) function, and then the process terminates by call- ing exit(EXIT_FAILURE). The explain_vsprintf_on_error function is used to call the vsprintf(3) sys- tem call. On failure an explanation will be printed to stderr, obtained from the explain_vsprintf(3) function, but still returns to the caller. data The data, exactly as to be passed to the vsprintf(3) system call. format The format, exactly as to be passed to the vsprintf(3) system call. ap The ap, exactly as to be passed to the vsprintf(3) system call. RETURN VALUE The explain_vsprintf_or_die function only returns on success, see vsprintf(3) for more information. On failure, prints an explanation and ex- its, it does not return. The explain_vsprintf_on_error function always returns the value return by the wrapped vsprintf(3) system call. EXAMPLE The explain_vsprintf_or_die function is intended to be used in a fashion similar to the following example: int result = explain_vsprintf_or_die(data, format, ap); SEE ALSO vsprintf(3) formatted output conversion explain_vsprintf(3) explain vsprintf(3) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2010 Peter Miller explain_vsprintf_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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