24 lines
505 B
C
24 lines
505 B
C
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
int
|
|
main(int argc, char **argv, char **envp)
|
|
{
|
|
int ret = 0;
|
|
char *arr = NULL;
|
|
char **ptr =
|
|
#ifdef PTR_TO_NULL
|
|
&arr;
|
|
printf("%s: using &NULL as argv...\n", argv[0]);
|
|
#else
|
|
NULL;
|
|
printf("%s: using just NULL as argv...\n", argv[0]);
|
|
#endif
|
|
printf("%s: argv == %p\n", argv[0], ptr);
|
|
ret = execve(argv[1], ptr, envp);
|
|
|
|
printf("%s: execve failed ;_; got %s\n", argv[0], strerror(ret));
|
|
return 0;
|
|
}
|