From: Lionel Sambuc <lionel@minix3.org>
Date: Tue, 13 May 2014 10:07:25 +0000 (+0200)
Subject: Message type for PM_EXEC_NEW
X-Git-Tag: v3.3.0~290
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/processing.js?a=commitdiff_plain;h=aeedd5c718e78b5f40fc8ff04165300723982b82;p=minix.git

Message type for PM_EXEC_NEW

Change-Id: Idff5dc394d8daf4cb0c40d65cfdf2d54c2f9acaa
---

diff --git a/include/minix/callnr.h b/include/minix/callnr.h
index 9c3c66676..20c418b1f 100644
--- a/include/minix/callnr.h
+++ b/include/minix/callnr.h
@@ -122,11 +122,6 @@
 /* Field names for the reboot(2) call. */
 #define PM_REBOOT_HOW		m1_i1	/* int */
 
-/* Field names for the PM_EXEC_NEW call. */
-#define PM_EXEC_NEW_ENDPT	m1_i1	/* endpoint_t */
-#define PM_EXEC_NEW_PTR		m1_p1	/* struct exec_info * */
-#define PM_EXEC_NEW_SUID	m1_i2	/* int */
-
 /* Field names for the PM_EXEC_RESTART call. */
 #define PM_EXEC_RESTART_ENDPT	m1_i1	/* endpoint_t */
 #define PM_EXEC_RESTART_RESULT	m1_i2	/* int */
diff --git a/include/minix/ipc.h b/include/minix/ipc.h
index b307e531d..db144032d 100644
--- a/include/minix/ipc.h
+++ b/include/minix/ipc.h
@@ -451,6 +451,21 @@ typedef struct {
 } mess_lc_vfs_umount;
 _ASSERT_MSG_SIZE(mess_lc_vfs_umount);
 
+typedef struct {
+	endpoint_t endpt;
+	vir_bytes ptr;		/* struct exec_info * */
+
+	uint8_t padding[48];
+} mess_lexec_pm_exec_new;
+_ASSERT_MSG_SIZE(mess_lexec_pm_exec_new);
+
+typedef struct {
+	int suid;
+
+	uint8_t padding[52];
+} mess_pm_lexec_exec_new;
+_ASSERT_MSG_SIZE(mess_pm_lexec_exec_new);
+
 typedef struct {
 	endpoint_t endpt;
 
@@ -989,6 +1004,8 @@ typedef struct {
 		mess_lc_vfs_umask	m_lc_vfs_umask;
 		mess_lc_vfs_umount	m_lc_vfs_umount;
 
+		mess_lexec_pm_exec_new	m_lexec_pm_exec_new;
+
 		mess_lsys_pm_getepinfo	m_lsys_pm_getepinfo;
 		mess_lsys_pm_getprocnr	m_lsys_pm_getprocnr;
 
@@ -996,6 +1013,8 @@ typedef struct {
 		mess_lsys_vfs_copyfd	m_lsys_vfs_copyfd;
 		mess_lsys_vfs_mapdriver	m_lsys_vfs_mapdriver;
 
+		mess_pm_lexec_exec_new	m_pm_lexec_exec_new;
+
 		mess_pm_lc_ptrace	m_pm_lc_ptrace;
 		mess_pm_lc_time		m_pm_lc_time;
 		mess_pm_lc_waitpid	m_pm_lc_waitpid;
diff --git a/lib/libexec/exec_general.c b/lib/libexec/exec_general.c
index e590bf2dd..495913b68 100644
--- a/lib/libexec/exec_general.c
+++ b/lib/libexec/exec_general.c
@@ -82,11 +82,11 @@ int libexec_pm_newexec(endpoint_t proc_e, struct exec_info *e)
 
   memset(&m, 0, sizeof(m));
   m.m_type = PM_EXEC_NEW;
-  m.PM_EXEC_NEW_ENDPT = proc_e;
-  m.PM_EXEC_NEW_PTR = (char *)e;
+  m.m_lexec_pm_exec_new.endpt = proc_e;
+  m.m_lexec_pm_exec_new.ptr = (vir_bytes)e;
   if ((r = ipc_sendrec(PM_PROC_NR, &m)) != OK) return(r);
 
-  e->allow_setuid = !!m.PM_EXEC_NEW_SUID;
+  e->allow_setuid = !!m.m_pm_lexec_exec_new.suid;
 
   return(m.m_type);
 }
diff --git a/servers/pm/exec.c b/servers/pm/exec.c
index 1c4af3099..4d7c142b3 100644
--- a/servers/pm/exec.c
+++ b/servers/pm/exec.c
@@ -61,7 +61,7 @@ int do_exec()
 int do_newexec(void)
 {
 	int proc_e, proc_n, allow_setuid;
-	char *ptr;
+	vir_bytes ptr;
 	struct mproc *rmp;
 	struct exec_info args;
 	int r;
@@ -69,14 +69,13 @@ int do_newexec(void)
 	if (who_e != VFS_PROC_NR && who_e != RS_PROC_NR)
 		return EPERM;
 
-	proc_e= m_in.PM_EXEC_NEW_ENDPT;
+	proc_e= m_in.m_lexec_pm_exec_new.endpt;
 	if (pm_isokendpt(proc_e, &proc_n) != OK) {
 		panic("do_newexec: got bad endpoint: %d", proc_e);
 	}
 	rmp= &mproc[proc_n];
-	ptr= m_in.PM_EXEC_NEW_PTR;
-	r= sys_datacopy(who_e, (vir_bytes)ptr,
-		SELF, (vir_bytes)&args, sizeof(args));
+	ptr= m_in.m_lexec_pm_exec_new.ptr;
+	r= sys_datacopy(who_e, ptr, SELF, (vir_bytes)&args, sizeof(args));
 	if (r != OK)
 		panic("do_newexec: sys_datacopy failed: %d", r);
 
@@ -115,7 +114,7 @@ int do_newexec(void)
 	/* Kill process if something goes wrong after this point. */
 	rmp->mp_flags |= PARTIAL_EXEC;
 
-	mp->mp_reply.PM_EXEC_NEW_SUID = (allow_setuid && args.allow_setuid);
+	mp->mp_reply.m_pm_lexec_exec_new.suid = (allow_setuid && args.allow_setuid);
 
 	return r;
 }