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#include <stdio.h>
#include <string.h>
#include <unistd.h>
const char *str = "Hello!", *str2 = "World.";
int main(int argc, char **argv) {
printf("elftest's &main == %p\n", &main);
printf("%s %s\n", str, str2);
printf("argc == %u\n", argc);
for (int i = 0; i < argc; i++)
printf("argv[%u] == %p == \"%s\"\n", i, argv[i], argv[i]);
if (strcmp(argv[1], "stackexec") == 0) {
/* exec something with arguments on the stack */
const char s_d[] = "I am a pretty long string on the stack. Oh my. " \
"I hope I won't get corrupted.\0";
char s[sizeof(s_d)];
memcpy(s, s_d, sizeof(s_d));
const char *argv2[] = {argv[0], s, s, "hello", s, s, s, "lol", NULL};
printf("argv2 == %p, s == %p\n== exec ==\n", argv2, s);
execv(argv[0], (void*)argv2);
puts("stackexec failed");
}
return 0;
}
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