explain_fgetpos_or_die3
Reposition a stream and report errors
Usage
#include <libexplain/fgetpos.h>
void explain_fgetpos_or_die(FILE *fp, fpos_t *pos);
int explain_fgetpos_on_error(FILE *fp, fpos_t *pos);
Overview
The explain_fgetpos_or_die function is used to call the fgetpos(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fgetpos(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_fgetpos_on_error function is used to call the fgetpos(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fgetpos(3) function, but still returns to the caller.
fp
|
The fp, exactly as to be passed to the fgetpos(3) system call. |
|---|---|
pos
|
The pos, exactly as to be passed to the fgetpos(3) system call. |
Return value
The explain_fgetpos_or_die function only returns on success, see fgetpos(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_fgetpos_on_error function always returns the value return by the wrapped fgetpos(3) system call.
Examples
The explain_fgetpos_or_die function is intended to be used in a fashion similar to the following example:
explain_fgetpos_or_die(fp, pos);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.