From: Lionel Sambuc <lionel@minix3.org>
Date: Wed, 21 May 2014 14:59:30 +0000 (+0200)
Subject: Message type for SYS_IOPENABLE
X-Git-Tag: v3.3.0~225
X-Git-Url: http://zhaoyanbai.com/repos/Bv9ARM.ch03.html?a=commitdiff_plain;h=05f155c0a964110e9ef14af795737c0159bdc861;p=minix.git

Message type for SYS_IOPENABLE

Change-Id: I8b089c30c7f9ae75e404f63495bbb199d583f1cd
---

diff --git a/include/minix/com.h b/include/minix/com.h
index 1e9a9ba19..12b01271f 100644
--- a/include/minix/com.h
+++ b/include/minix/com.h
@@ -310,9 +310,6 @@
 #  define IRQ_WORD      0x200	/* word values */
 #  define IRQ_LONG      0x400	/* long values */
 
-/* Field names for SYS_IOPENABLE. */
-#define IOP_ENDPT	m2_l1	/* target endpoint */
-
 /* Field names for _UMAP, _VIRCOPY, _PHYSCOPY. */
 #define CP_SRC_ENDPT	m5_i1	/* process to copy from */
 #define CP_SRC_ADDR	m5_l1	/* address where data come from */
diff --git a/include/minix/ipc.h b/include/minix/ipc.h
index c3c7053cc..c5c823e85 100644
--- a/include/minix/ipc.h
+++ b/include/minix/ipc.h
@@ -707,6 +707,13 @@ typedef struct {
 } mess_lsys_krn_sys_abort;
 _ASSERT_MSG_SIZE(mess_lsys_krn_sys_abort);
 
+typedef struct {
+	endpoint_t endpt;
+
+	uint8_t padding[52];
+} mess_lsys_krn_sys_iopenable;
+_ASSERT_MSG_SIZE(mess_lsys_krn_sys_iopenable);
+
 typedef struct {
 	int request;
 	int vector;
@@ -1489,6 +1496,7 @@ typedef struct {
 		mess_lsys_krn_schedctl	m_lsys_krn_schedctl;
 		mess_lsys_krn_schedule	m_lsys_krn_schedule;
 		mess_lsys_krn_sys_abort m_lsys_krn_sys_abort;
+		mess_lsys_krn_sys_iopenable m_lsys_krn_sys_iopenable;
 		mess_lsys_krn_sys_irqctl m_lsys_krn_sys_irqctl;
 		mess_lsys_krn_sys_memset m_lsys_krn_sys_memset;
 		mess_lsys_krn_sys_sdevio m_lsys_krn_sys_sdevio;
diff --git a/kernel/arch/i386/do_iopenable.c b/kernel/arch/i386/do_iopenable.c
index 680be3b86..97a39e7e5 100644
--- a/kernel/arch/i386/do_iopenable.c
+++ b/kernel/arch/i386/do_iopenable.c
@@ -2,7 +2,7 @@
  *   m_type:	SYS_IOPENABLE
  *
  * The parameters for this system call are:
- *    m2_i2:	IOP_ENDPT	(process to give I/O Protection Level bits)
+ *   m_lsys_krn_sys_iopenable.endpt	(process to give I/O Protection Level bits)
  *
  * Author:
  *    Jorrit N. Herder <jnherder@cs.vu.nl>
@@ -22,9 +22,9 @@ int do_iopenable(struct proc * caller, message * m_ptr)
   int proc_nr;
 
 #if 1 /* ENABLE_USERPRIV && ENABLE_USERIOPL */
-  if (m_ptr->IOP_ENDPT == SELF) {
+  if (m_ptr->m_lsys_krn_sys_iopenable.endpt == SELF) {
 	okendpt(caller->p_endpoint, &proc_nr);
-  } else if(!isokendpt(m_ptr->IOP_ENDPT, &proc_nr))
+  } else if(!isokendpt(m_ptr->m_lsys_krn_sys_iopenable.endpt, &proc_nr))
 	return(EINVAL);
   enable_iop(proc_addr(proc_nr));
   return(OK);
diff --git a/lib/libsys/arch/i386/sys_eniop.c b/lib/libsys/arch/i386/sys_eniop.c
index ca0681b44..da1be418e 100644
--- a/lib/libsys/arch/i386/sys_eniop.c
+++ b/lib/libsys/arch/i386/sys_eniop.c
@@ -7,7 +7,7 @@ int sys_enable_iop(proc_ep)
 endpoint_t proc_ep;			/* number of process to allow I/O */
 {
     message m_iop;
-    m_iop.IOP_ENDPT = proc_ep;
+    m_iop.m_lsys_krn_sys_iopenable.endpt = proc_ep;
     return _kernel_call(SYS_IOPENABLE, &m_iop);
 }