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