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explain_ftello_or_die(3) Library Functions Manual explain_ftello_or_die(3) NAME explain_ftello_or_die - get stream position and report errors SYNOPSIS #include <libexplain/ftello.h> off_t explain_ftello_or_die(FILE *fp); off_t explain_ftello_on_error(FILE *fp); DESCRIPTION The explain_ftello_or_die function is used to call the ftello(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_ftello(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_ftello_on_error function is used to call the ftello(3) sys- tem call. On failure an explanation will be printed to stderr, obtained from the explain_ftello(3) function, but still returns to the caller. fp The fp, exactly as to be passed to the ftello(3) system call. RETURN VALUE The explain_ftello_or_die function only returns on success, see ftello(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_ftello_on_error function always returns the value return by the wrapped ftello(3) system call. EXAMPLE The explain_ftello_or_die function is intended to be used in a fashion similar to the following example: off_t result = explain_ftello_or_die(fp); SEE ALSO ftello(3) get stream position explain_ftello(3) explain ftello(3) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2013 Peter Miller explain_ftello_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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