explain_execv_or_die man page

explain_execv_or_die — execute a file and report errors

Synopsis

#include <libexplain/execv.h>

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

Description

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).

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, but still returns to the caller.

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.

Return Value

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

The explain_execv_on_error function always returns the value return by the wrapped execv(3) system call.

Example

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

explain_execv_or_die(pathname, argv);

See Also

execv(3)
execute a file
explain_execv(3)
explain execv(3) errors
exit(2)
terminate the calling process

Referenced By

explain(3), explain_execv(3).