CS318 - Pintos
Pintos source browser for JHU CS318 course
pt-write-code-2.c
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1 /** Try to write to the code segment using a system call.
2  The process must be terminated with -1 exit code. */
3 
4 #include "tests/lib.h"
5 #include "tests/main.h"
6 
7 void
8 test_main (void)
9 {
10  int handle;
11 
12  CHECK ((handle = open ("sample.txt")) > 1, "open \"sample.txt\"");
13  read (handle, (void *) test_main, 1);
14  fail ("survived reading data into code segment");
15 }
lib.h
CHECK
#define CHECK(SUCCESS,...)
Takes an expression to test for SUCCESS and a message, which may include printf-style arguments.
Definition: lib.h:29
open
int open(const char *file)
Definition: syscall.c:103
test_main
void test_main(void)
Try to write to the code segment using a system call.
Definition: pt-write-code-2.c:8
fail
void fail(const char *format,...)
Definition: lib.c:40
main.h
read
int read(int fd, void *buffer, unsigned size)
Definition: syscall.c:115
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