From ea691ecd980d2860f0b39e9e504de4da404806fd Mon Sep 17 00:00:00 2001
From: obrien <obrien@FreeBSD.org>
Date: Wed, 5 Dec 2007 15:48:03 +0000
Subject: Virgin import of AMD (am-utils) v6.1.5

Sponsored by: Juniper Networks
---
 contrib/amd/conf/umount/umount_bsd44.c | 55 ++++++++++++++++++++++++++--------
 1 file changed, 43 insertions(+), 12 deletions(-)

(limited to 'contrib/amd/conf/umount/umount_bsd44.c')

diff --git a/contrib/amd/conf/umount/umount_bsd44.c b/contrib/amd/conf/umount/umount_bsd44.c
index 6ac4c03..d05944d 100644
--- a/contrib/amd/conf/umount/umount_bsd44.c
+++ b/contrib/amd/conf/umount/umount_bsd44.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997-2004 Erez Zadok
+ * Copyright (c) 1997-2006 Erez Zadok
  * Copyright (c) 1990 Jan-Simon Pendry
  * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
  * Copyright (c) 1990 The Regents of the University of California.
@@ -36,9 +36,8 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      %W% (Berkeley) %G%
  *
- * $Id: umount_bsd44.c,v 1.3.2.4 2004/01/06 03:15:20 ezk Exp $
+ * File: am-utils/conf/umount/umount_bsd44.c
  *
  */
 
@@ -54,12 +53,12 @@
 
 
 int
-umount_fs(char *fs_name, const char *mnttabname)
+umount_fs(char *mntdir, const char *mnttabname, u_int unmount_flags)
 {
   int error;
 
 eintr:
-  error = unmount(fs_name, 0);
+  error = unmount(mntdir, 0);
   if (error < 0)
     error = errno;
 
@@ -67,23 +66,55 @@ eintr:
   case EINVAL:
   case ENOTBLK:
   case ENOENT:
-    plog(XLOG_WARNING, "unmount: %s is not mounted", fs_name);
+    plog(XLOG_WARNING, "unmount: %s is not mounted", mntdir);
     error = 0;			/* Not really an error */
     break;
 
   case EINTR:
-#ifdef DEBUG
     /* not sure why this happens, but it does.  ask kirk one day... */
-    dlog("%s: unmount: %m", fs_name);
-#endif /* DEBUG */
+    dlog("%s: unmount: %m", mntdir);
     goto eintr;
 
-#ifdef DEBUG
+#ifdef MNT2_GEN_OPT_FORCE
+  case EBUSY:
+  case EIO:
+  case ESTALE:
+    /* caller determines if forced unmounts should be used */
+    if (unmount_flags & AMU_UMOUNT_FORCE) {
+      error = umount2_fs(mntdir, unmount_flags);
+      if (error < 0)
+	error = errno;
+      else
+	return error;
+    }
+    /* fallthrough */
+#endif /* MNT2_GEN_OPT_FORCE */
+
   default:
-    dlog("%s: unmount: %m", fs_name);
+    dlog("%s: unmount: %m", mntdir);
     break;
-#endif /* DEBUG */
   }
 
   return error;
 }
+
+
+#ifdef MNT2_GEN_OPT_FORCE
+/* force unmount, no questions asked, without touching mnttab file */
+int
+umount2_fs(const char *mntdir, u_int unmount_flags)
+{
+  int error = 0;
+  if (unmount_flags & AMU_UMOUNT_FORCE) {
+    plog(XLOG_INFO, "umount2_fs: trying unmount/forced on %s", mntdir);
+    error = unmount(mntdir, MNT2_GEN_OPT_FORCE);
+    if (error < 0 && (errno == EINVAL || errno == ENOENT))
+      error = 0;		/* ignore EINVAL/ENOENT */
+    if (error < 0)
+      plog(XLOG_WARNING, "%s: unmount/force: %m", mntdir);
+    else
+      dlog("%s: unmount/force: OK", mntdir);
+  }
+  return error;
+}
+#endif /* MNT2_GEN_OPT_FORCE */
-- 
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