PSARC 2008/290 lofi mount
6384817 Need persistent lofi based mounts and direct mount(1m) support for lofi

*** 22,32 ****
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma ident   "@(#)vplat.c    1.60    08/04/08 SMI"
  
  /*
   * This module contains functions used to bring up and tear down the
   * Virtual Platform: [un]mounting file-systems, [un]plumbing network
   * interfaces, [un]configuring devices, establishing resource controls,
--- 22,32 ----
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
! #pragma ident   "@(#)vplat.c    1.61    08/05/07 SMI"
  
  /*
   * This module contains functions used to bring up and tear down the
   * Virtual Platform: [un]mounting file-systems, [un]plumbing network
   * interfaces, [un]configuring devices, establishing resource controls,
*** 802,811 ****
--- 802,822 ----
          }
          return (WEXITSTATUS(child_status));
  }
  
  static int
+ isregfile(const char *path)
+ {
+         struct stat64 st;
+ 
+         if (stat64(path, &st) == -1)
+                 return (-1);
+ 
+         return (S_ISREG(st.st_mode));
+ }
+ 
+ static int
  dofsck(zlog_t *zlogp, const char *fstype, const char *rawdev)
  {
          char cmdbuf[MAXPATHLEN];
          char *argv[4];
          int status;
*** 818,827 ****
--- 829,844 ----
              >= sizeof (cmdbuf)) {
                  zerror(zlogp, B_FALSE, "file-system type %s too long", fstype);
                  return (-1);
          }
  
+         /*
+          * If it doesn't exist, that's OK: we verified this previously.
+          */
+         if (isregfile(cmdbuf) == -1)
+                 return (0);
+ 
          argv[0] = "fsck";
          argv[1] = "-m";
          argv[2] = (char *)rawdev;
          argv[3] = NULL;
  
*** 1259,1270 ****
  
          /*
           * Run 'fsck -m' if there's a device to fsck.
           */
          if (fsptr->zone_fs_raw[0] != '\0' &&
!             dofsck(zlogp, fsptr->zone_fs_type, fsptr->zone_fs_raw) != 0)
                  return (-1);
  
          /*
           * Build up mount option string.
           */
          optstr[0] = '\0';
--- 1276,1291 ----
  
          /*
           * Run 'fsck -m' if there's a device to fsck.
           */
          if (fsptr->zone_fs_raw[0] != '\0' &&
!             dofsck(zlogp, fsptr->zone_fs_type, fsptr->zone_fs_raw) != 0) {
                  return (-1);
+         } else if (isregfile(fsptr->zone_fs_special) == 1 &&
+             dofsck(zlogp, fsptr->zone_fs_type, fsptr->zone_fs_special) != 0) {
+                 return (-1);
+         }
  
          /*
           * Build up mount option string.
           */
          optstr[0] = '\0';