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

*** 24,34 ****
   * THIS SOFTWARE IS PROVIDED '`AS IS'' AND WITHOUT ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
   */
  
! #pragma ident   "@(#)main.c     1.54    08/02/06 SMI"
  
  /*
   * In-core structures:
   * blockmap[]
   *      A bitmap of block usage very similar to what's on disk, but
--- 24,34 ----
   * THIS SOFTWARE IS PROVIDED '`AS IS'' AND WITHOUT ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
   */
  
! #pragma ident   "@(#)main.c     1.55    08/05/07 SMI"
  
  /*
   * In-core structures:
   * blockmap[]
   *      A bitmap of block usage very similar to what's on disk, but
*** 694,737 ****
          FILE *vfstab;
          struct statvfs vfs_stat;
          int found_magic[MAGIC_LIMIT];
          int magic_cnt;
          int is_magic = 0;
!         int is_block;
  
          (void) memset((void *)found_magic, 0, sizeof (found_magic));
  
          if (stat64(filename, &stbd) < 0) {
                  (void) fprintf(stderr,
                  "ufs fsck: sanity check failed : cannot stat %s\n", filename);
                  exit(EXNOSTAT);
          }
  
!         if ((stbd.st_mode & S_IFMT) == S_IFBLK) {
                  is_block = 1;
!         } else if ((stbd.st_mode & S_IFMT) == S_IFCHR) {
                  is_block = 0;
!         } else {
!                 /*
!                  * In !mflag mode, we allow checking the contents
!                  * of a file.  Since this is intended primarily for
!                  * speeding up boot-time checks and allowing for a
!                  * file complicates the ok-input tests, we'll disallow
!                  * that option.
!                  */
!                 (void) fprintf(stderr,
!                     "ufs fsck: sanity check failed: "
!                     "%s not block or character device\n", filename);
!                 exit(EXNOSTAT);
          }
  
          /*
           * Determine if this is the root file system via vfstab. Give up
           * silently on failures. The whole point of this is to be tolerant
           * of the magic file systems being already mounted.
           */
!         if ((vfstab = fopen(VFSTAB, "r")) != 0) {
                  for (magic_cnt = 0; magic_cnt < MAGIC_LIMIT; magic_cnt++) {
                          if (magic_cnt == MAGIC_NONE)
                                  continue;
                          if (getvfsfile(vfstab, &vfsbuf,
                              magic_fs[magic_cnt]) == 0) {
--- 694,728 ----
          FILE *vfstab;
          struct statvfs vfs_stat;
          int found_magic[MAGIC_LIMIT];
          int magic_cnt;
          int is_magic = 0;
!         int is_block = 0;
!         int is_file = 0;
  
          (void) memset((void *)found_magic, 0, sizeof (found_magic));
  
          if (stat64(filename, &stbd) < 0) {
                  (void) fprintf(stderr,
                  "ufs fsck: sanity check failed : cannot stat %s\n", filename);
                  exit(EXNOSTAT);
          }
  
!         if (S_ISBLK(stbd.st_mode)) {
                  is_block = 1;
!         } else if (S_ISCHR(stbd.st_mode)) {
                  is_block = 0;
!         } else if (S_ISREG(stbd.st_mode)) {
!                 is_file = 1;
          }
  
          /*
           * Determine if this is the root file system via vfstab. Give up
           * silently on failures. The whole point of this is to be tolerant
           * of the magic file systems being already mounted.
           */
!         if (!is_file && (vfstab = fopen(VFSTAB, "r")) != NULL) {
                  for (magic_cnt = 0; magic_cnt < MAGIC_LIMIT; magic_cnt++) {
                          if (magic_cnt == MAGIC_NONE)
                                  continue;
                          if (getvfsfile(vfstab, &vfsbuf,
                              magic_fs[magic_cnt]) == 0) {