libexplain/popen_on_error.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/stdio.h>
#include <libexplain/popen.h>
#include <libexplain/output.h>

Go to the source code of this file.

Functions
FILE *	explain_popen_on_error (const char *command, const char *flags)

---

Function Documentation

FILE* explain_popen_on_error	(	const char *	command,
		const char *	flags
	)

The explain_popen_on_error function is used to call the popen(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_popen(3) function.

This function is intended to be used in a fashion similar to the following example:

 FILE *fp = explain_popen_on_error(command, flags);
 if (!fp)
 {
     ...cope with error
     ...no need to print error message
 }

Parameters:

command	The command, exactly as to be passed to the popen(3) system call.
flags	The flags, exactly as to be passed to the popen(3) system call.

Returns:

The value returned by the wrapped popen(3) system call.

Definition at line 27 of file popen_on_error.c.