libexplain/execv_or_die.c File Reference

#include <libexplain/ac/errno.h>
#include <libexplain/ac/unistd.h>
#include <libexplain/execv.h>
#include <libexplain/output.h>

Go to the source code of this file.

Functions
void	explain_execv_or_die (const char *pathname, char *const *argv)
int	explain_execv_on_error (const char *pathname, char *const *argv)

---

Function Documentation

int explain_execv_on_error	(	const char *	pathname,
		char *const *	argv
	)

The explain_execv_on_error function is used to call the execv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_execv(3) function.

Parameters:

pathname	The pathname, exactly as to be passed to the execv(3) system call.
argv	The argv, exactly as to be passed to the execv(3) system call.

Returns:

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

Example:

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

 if (explain_execv_on_error(pathname, argv) < 0)
 {
     ...cope with error
     ...no need to print error message
 }

Definition at line 37 of file execv_or_die.c.

void explain_execv_or_die	(	const char *	pathname,
		char *const *	argv
	)

The explain_execv_or_die function is used to call the execv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_execv(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

Parameters:

pathname	The pathname, exactly as to be passed to the execv(3) system call.
argv	The argv, exactly as to be passed to the execv(3) system call.

Returns:

This function only returns on success, see execv(3) for more information. On failure, prints an explanation and exits, it does not return.

Example:

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

 explain_execv_or_die(pathname, argv);

Definition at line 27 of file execv_or_die.c.