1 /* Tests variant of SYS_execve where the first argument is a file descriptor. */ 2 3 #include <errno.h> 4 #include <fcntl.h> 5 #include <stdio.h> 6 #include <unistd.h> 7 #include <sys/execx.h> 8 #include <sys/syscall.h> 9 #include <sys/wait.h> 10 11 static void test_EFAULT(void) { 12 int ret = syscall(SYS_execve, -1, 0, 0, 0); 13 int error = errno; 14 if ((ret != -1) || (error != EFAULT)) 15 fprintf(stderr, "Expecting EFAULT\n"); 16 } 17 18 static void test_EBADF(void) { 19 int ret = syscall(SYS_execve, -1, 0, 0, EXEC_DESCRIPTOR); 20 int error = errno; 21 if ((ret != -1) || (error != EBADF)) 22 fprintf(stderr, "Expecting EBADF\n"); 23 } 24 25 static int test_fexecve(char * const *envp) { 26 int fd = open("/usr/bin/printf", O_EXEC); 27 if (fd < 0) { 28 perror("open"); 29 return 1; 30 } 31 32 pid_t pid = fork(); 33 if (pid == -1) { 34 perror("fork"); 35 return 1; 36 } else if (pid > 0) { 37 /* parent */ 38 } else { 39 char *argv[] = {"printf", "PASSED\n", NULL}; 40 41 if (fexecve(fd, argv, envp) < 0) { 42 perror("fexecve"); 43 _exit(1); 44 } 45 46 } 47 48 wait(NULL); 49 return 0; 50 } 51 52 int main(int argc, const char *argv[], char * const *envp) { 53 /* First exercise the syscall with some invalid input. */ 54 test_EFAULT(); 55 test_EBADF(); 56 57 return test_fexecve(envp); 58 } 59
