CS318 - Pintos
Pintos source browser for JHU CS318 course
rox-simple.c
Go to the documentation of this file.
1 /** Ensure that the executable of a running process cannot be
2  modified. */
3 
4 #include <syscall.h>
5 #include "tests/lib.h"
6 #include "tests/main.h"
7 
8 void
9 test_main (void)
10 {
11  int handle;
12  char buffer[16];
13 
14  CHECK ((handle = open ("rox-simple")) > 1, "open \"rox-simple\"");
15  CHECK (read (handle, buffer, sizeof buffer) == (int) sizeof buffer,
16  "read \"rox-simple\"");
17  CHECK (write (handle, buffer, sizeof buffer) == 0,
18  "try to write \"rox-simple\"");
19 }
lib.h
write
int write(int fd, const void *buffer, unsigned size)
Definition: syscall.c:121
CHECK
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29
test_main
void test_main(void)
Ensure that the executable of a running process cannot be modified.
Definition: rox-simple.c:9
buffer
static struct intq buffer
Stores keys from the keyboard and serial port.
Definition: input.c:7
open
int open(const char *file)
Definition: syscall.c:103
main.h
read
int read(int fd, void *buffer, unsigned size)
Definition: syscall.c:115
Generated on Thu Aug 22 2019 10:19:15 for CS318 - Pintos by   doxygen 1.8.16