explain_setvbuf_or_die3
Stream buffering operations and report errors
Usage
#include <libexplain/setvbuf.h>
void explain_setvbuf_or_die(FILE *fp, char *data, int mode, size_t size);
int explain_setvbuf_on_error(FILE *fp, char *data, int mode, size_t size);
Overview
The explain_setvbuf_or_die function is used to call the setvbuf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setvbuf(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_setvbuf_on_error function is used to call the setvbuf(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setvbuf(3) function, but still returns to the caller.
fp
|
The fp, exactly as to be passed to the setvbuf(3) system call. |
|---|---|
data
|
The data, exactly as to be passed to the setvbuf(3) system call. |
mode
|
The mode, exactly as to be passed to the setvbuf(3) system call. |
size
|
The size, exactly as to be passed to the setvbuf(3) system call. |
Return value
The explain_setvbuf_or_die function only returns on success, see setvbuf(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_setvbuf_on_error function always returns the value return by the wrapped setvbuf(3) system call.
Examples
The explain_setvbuf_or_die function is intended to be used in a fashion similar to the following example:
explain_setvbuf_or_die(fp, data, mode, size);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.