project1-submission.patch

diff --git a/include/minix/callnr.h b/include/minix/callnr.h
index 6f145cf..6c803a9 100644
--- a/include/minix/callnr.h
+++ b/include/minix/callnr.h
@@ -65,6 +65,8 @@
 #define SETGROUPS_O	  66
 #define GETMCONTEXT       67
 #define SETMCONTEXT       68
+#define GETSV             69
+#define SETSV             70
 
 /* Posix signal handling. */
 #define SIGACTION	  71
diff --git a/include/minix/sys_config.h b/include/minix/sys_config.h
index 533046c..2a66d89 100644
--- a/include/minix/sys_config.h
+++ b/include/minix/sys_config.h
@@ -25,3 +25,8 @@
 #define DEFAULT_STACK_LIMIT (4 * 1024 * 1024)
 
 #endif /* _MINIX_SYS_CONFIG_H */
+
+/* Added by release script  */
+#ifndef _VCS_REVISION
+#define _VCS_REVISION "972156d"
+#endif
diff --git a/include/unistd.h b/include/unistd.h
index 55a146b..cdfc5b6 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -437,6 +437,8 @@ extern	 int optreset;		/* getopt(3) external variable */
 extern	 char *suboptarg;	/* getsubopt(3) external variable */
 #endif
 
+int set_sv(int newVal, int* status);
+int get_sv(int pid, int* status);
 __END_DECLS
 
 #ifdef __minix
diff --git a/lib/libc/sys-minix/Makefile.inc b/lib/libc/sys-minix/Makefile.inc
index 6f52097..2c6ff5f 100644
--- a/lib/libc/sys-minix/Makefile.inc
+++ b/lib/libc/sys-minix/Makefile.inc
@@ -16,7 +16,8 @@ SRCS+= 	accept.c access.c bind.c brk.c sbrk.c m_closefrom.c getsid.c \
 	vectorio.c shutdown.c sigaction.c sigpending.c sigreturn.c sigsuspend.c\
 	sigprocmask.c socket.c socketpair.c stat.c statvfs.c symlink.c \
 	sync.c syscall.c sysuname.c truncate.c umask.c unlink.c write.c \
-	_exit.c _ucontext.c environ.c __getcwd.c vfork.c sizeup.c init.c
+	_exit.c _ucontext.c environ.c __getcwd.c vfork.c sizeup.c init.c \
+	getsv.c setsv.c
 
 # Minix specific syscalls.
 SRCS+= cprofile.c lseek64.c sprofile.c _mcontext.c
diff --git a/lib/libc/sys-minix/getsv.c b/lib/libc/sys-minix/getsv.c
new file mode 100644
index 0000000..04d8ee1
--- /dev/null
+++ b/lib/libc/sys-minix/getsv.c
@@ -0,0 +1,16 @@
+// get_sv.c
+
+#include <lib.h>
+#include <unistd.h>
+
+int get_sv(int pid, int* status)
+{
+	message m;
+	m.m1_i1 = pid;	
+	if (m.m2_i1 == 1) {
+		*status = 1;
+	} else {
+		*status = 0;
+	}
+	return(_syscall(PM_PROC_NR, GETSV, &m));
+}
diff --git a/lib/libc/sys-minix/setsv.c b/lib/libc/sys-minix/setsv.c
new file mode 100644
index 0000000..0bb7ce6
--- /dev/null
+++ b/lib/libc/sys-minix/setsv.c
@@ -0,0 +1,12 @@
+// set_sv.c
+
+#include <lib.h>
+#include <unistd.h>
+
+int set_sv(int newVal, int* status)
+{
+	message m;
+	m.m1_i1 = newVal;
+	*status = 0;
+	return(_syscall(PM_PROC_NR, SETSV, &m));
+}
diff --git a/lib/libc/sys-minix/test.h b/lib/libc/sys-minix/test.h
new file mode 100644
index 0000000..11aef25c
--- /dev/null
+++ b/lib/libc/sys-minix/test.h
@@ -0,0 +1,22 @@
+#define SUCCESS 0
+#define FAILURE 1
+
+#define PROMPT " > "
+#define HELP "0 = exit; 1 = get <pid>; 2 = set <value>; 3 = set <current PID>"
+
+#define MAX_PID 100
+
+enum CMD { EXIT, GET, SET, SETPID };
+
+int set_sv(int newval, int* status);
+int get_sv(int pid, int* status);
+
+void process_cmd(int command);
+
+#ifdef TEST_IMPL
+int curr_pid = 0;
+int value[MAX_PID];
+#else
+extern int curr_pid;
+extern int value[MAX_PID];
+#endif
diff --git a/lib/libc/ucontextoffsets.h b/lib/libc/ucontextoffsets.h
new file mode 100644
index 0000000..7e09221
--- /dev/null
+++ b/lib/libc/ucontextoffsets.h
@@ -0,0 +1,13 @@
+#define __ucontext_SIZEOF 608
+#define UC_FLAGS 0
+#define UC_LINK 4
+#define MAGIC 8
+#define DI 20
+#define SI 24
+#define BP 28
+#define AX 48
+#define BX 36
+#define CX 44
+#define DX 40
+#define PC 56
+#define SP 68
diff --git a/servers/pm/misc.c b/servers/pm/misc.c
index dbe979f..259ab99 100644
--- a/servers/pm/misc.c
+++ b/servers/pm/misc.c
@@ -471,6 +471,22 @@ int do_svrctl()
   }
 }
 
+int do_getsv(void)
+{
+	struct mproc *rm = find_proc(m_in.m1_i1);
+	if (rm == NULL) {
+		rm->mp_reply.m2_i1=1;
+	}
+	return rm->mp_shared_val;
+}
+
+int do_setsv(void)
+{
+	struct mproc *rm = mp;
+	rm->mp_shared_val = m_in.m1_i1;
+	return rm->mp_shared_val;
+}
+
 /*===========================================================================*
  *				_brk				             *
  *===========================================================================*/
diff --git a/servers/pm/mproc.h b/servers/pm/mproc.h
index 80afb4e..8d8e231 100644
--- a/servers/pm/mproc.h
+++ b/servers/pm/mproc.h
@@ -70,6 +70,7 @@ EXTERN struct mproc {
   char mp_name[PROC_NAME_LEN];	/* process name */
 
   int mp_magic;			/* sanity check, MP_MAGIC */
+  int mp_shared_val;
 } mproc[NR_PROCS];
 
 /* Flag values */
diff --git a/servers/pm/proto.h b/servers/pm/proto.h
index 00646d3..9c0ecf4 100644
--- a/servers/pm/proto.h
+++ b/servers/pm/proto.h
@@ -56,6 +56,8 @@ int do_getepinfo(void);
 int do_getepinfo_o(void);
 int do_svrctl(void);
 int do_getsetpriority(void);
+int do_getsv(void);
+int do_setsv(void);
 
 /* schedule.c */
 void sched_init(void);
diff --git a/servers/pm/table.c b/servers/pm/table.c
index 5051cec..6615826 100644
--- a/servers/pm/table.c
+++ b/servers/pm/table.c
@@ -80,8 +80,8 @@ int (*call_vec[])(void) = {
 	do_set, 	/* 66 = setgroups */
 	do_getmcontext,	/* 67 = getmcontext */
 	do_setmcontext,	/* 68 = setmcontext */
-	no_sys,		/* 69 = unused	*/
-	no_sys,		/* 70 = unused	*/
+	do_getsv,	/* 69 = getsv	*/
+	do_setsv,	/* 70 = setsv	*/
 	do_sigaction,	/* 71 = sigaction   */
 	do_sigsuspend,	/* 72 = sigsuspend  */
 	do_sigpending,	/* 73 = sigpending  */