explain_fseek_or_die3
Reposition a stream and report errors
Usage
#include <libexplain/fseek.h>
void explain_fseek_or_die(FILE *fp, long offset, int whence);
int explain_fseek_on_error(FILE *fp, long offset, int whence);
Overview
The explain_fseek_or_die function is used to call the fseek(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fseek(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_fseek_on_error function is used to call the fseek(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fseek(3) function, but still returns to the caller.
fp
|
The fp, exactly as to be passed to the fseek(3) system call. |
|---|---|
offset
|
The offset, exactly as to be passed to the fseek(3) system call. |
whence
|
The whence, exactly as to be passed to the fseek(3) system call. |
Return value
The explain_fseek_or_die function only returns on success, see fseek(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_fseek_on_error function always returns the value return by the wrapped fseek(3) system call.
Examples
The explain_fseek_or_die function is intended to be used in a fashion similar to the following example:
explain_fseek_or_die(fp, offset, whence);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.