-disk_dev_ino mode ino_only

xorriso/xorriso.1

@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Feb 12, 2008"
+.TH XORRISO 1 "Feb 23, 2008"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -414,7 +414,10 @@ enhanced images and to restore them to xattr capable file systems.
 .SS
 .B Command processing:
 .br
-Commands are either actions or settings. They consist of a command word,
+Commands are either actions which happen immediately or settings which
+influence following actions. So their sequence does matter.
+.br
+Commands consist of a command word,
 followed by zero or more parameter words. If the list of parameter words
 is of variable length (indicated by "[...]" or "[***]") then it has to be
 terminated by either the \fBlist delimiter\fR, or the end of argument list,
@@ -667,10 +670,10 @@ Enable or disable processing of xattr attributes in user namespace.
 If enabled, then xorriso will handle xattr similar to ACL.
 See also options -getfattr, -setfattr and above paragraph about xattr.
 .TP
-\fB\-disk_dev_ino\fR "on"|"off"
+\fB\-disk_dev_ino\fR "on"|"ino_only"|"off"
 Enable or disable processing of recorded file identification numbers
 (dev_t and ino_t). They are eventually stored as xattr "isofs.di" and allow
-to substantially accelerate file comparison:
+to substantially accelerate file comparison.
 .br
 If device numbers and inode numbers of the disk filesystems are persistent
 and if no irregular alterations of timestamps or system clock happen,
@@ -678,6 +681,10 @@ then potential content changes can be detected without reading that content.
 File content change is assumed if any of mtime, ctime, device number or inode
 number have changed.
 .br
+Mode "ino_only" replaces the precondition that device numbers are stable by the
+precondition that mount points in the compared tree always lead to the
+same filesystems. Use this if mode "on" always sees all files changed.
+.br
 The speed advantage appears only if the loaded session was produced with
 -disk_dev_ino "on" too.
 .TP
@@ -1141,11 +1148,12 @@ match files which have resp. have not a non-trivial ACL.
 .br
 -has_xattr , -has_no_xattr
 .br
-match files which have resp. have not xattr name-value pairs.
+match files which have resp. have not xattr name-value pairs
+from user namespace.
 .br
 -has_aaip , -has_no_aaip
 .br
-match files which have ACL or xattr resp. have neither of them.
+match files which have ACL or any xattr resp. have neither of them.
 .br
 
 Default action is "echo",
@@ -3104,11 +3112,17 @@ This changes the directory trees /open_source_project and /personal_mail
 in the ISO image so that they become exact copies of their disk counterparts.
 ISO file objects get created, deleted or get their attributes adjusted
 accordingly.
+.br
+ACL and xattr will be recorded. Accelerated comparison is enabled at the
+expense of potentially larger backup size.
+Only media with the expected volume id or blank media are accepted.
 Files with names matching *.o or *.swp get excluded explicitely.
 .br
-Only media with the expected volume id or blank media are accepted.
+\fB$\fR xorriso \\
 .br
-\fB$\fR xorriso -assert_volid 'PROJECTS_MAIL_*' FATAL \\
+ -acl on -xattr on -disk_dev_ino on \\
+.br
+ -assert_volid 'PROJECTS_MAIL_*' FATAL \\
 .br
  -dev /dev/sr0 \\
 .br
@@ -3129,8 +3143,10 @@ the old one.
 .br
 This makes sense if the full backup leaves substantial remaining capacity
 on media and if the expected changes are much smaller than the full backup.
-An update run will probably save no time but last longer than a full backup,
-unless option -disk_dev_ino "on" is used.
+.br
+Option -disk_dev_ino depends on stable device and inode numbers on disk.
+Without it, an update run will probably save no time but last longer than
+a full backup. Such a slow run might produce a smaller backup, though.
 .br 
 With \fBmount\fR option \fB-o "sbsector="\fR on Linux resp. \fB-s\fR on FreeBSD
 it is possible to access the session trees which represent the older backup

xorriso/xorriso.c

@@ -6356,7 +6356,9 @@ int Xorriso_status(struct XorrisO *xorriso, char *filter, FILE *fp, int flag)
  if(!(is_default && no_defaults))
    Xorriso_status_result(xorriso,filter,fp,flag&2);
  is_default= ((xorriso->do_aaip & (16 | 32 | 64)) == 0);
- sprintf(line,"-disk_dev_ino %s\n", (xorriso->do_aaip & 16 ? "on" : "off"));
+ sprintf(line,"-disk_dev_ino %s\n",
+         (xorriso->do_aaip & 16 ? (xorriso->do_aaip & 128 ? "ino_only" : "on" )
+                                : "off"));
  if(!(is_default && no_defaults))
    Xorriso_status_result(xorriso,filter,fp,flag&2);
 
@@ -6951,7 +6953,7 @@ int Xorriso_compare_2_files(struct XorrisO *xorriso, char *disk_adr,
  if(xorriso->do_aaip & 32) {
    /* dev,inode comparison. Eventually skip content comparison */
    ret= Xorriso_record_dev_inode(xorriso, "", s1.st_dev, s1.st_ino, NULL,
-                                 iso_adr, 1 | 2 | ((flag & (1 << 28)) >> 23));
+       iso_adr, 1 | 2 | ((flag & (1 << 28)) >> 23) | (xorriso->do_aaip & 128));
    if(ret < 0) {
      ret= -1; goto ex;
    } else if(ret == 0) { /* match */
@@ -13018,13 +13020,15 @@ int Xorriso_option_dialog(struct XorrisO *xorriso, char *mode, int flag)
 }
 
 
-/* Option -disk_dev_ino "on"|"off" */
+/* Option -disk_dev_ino "on"|"ino_only"|"off" */
 int Xorriso_option_disk_dev_ino(struct XorrisO *xorriso, char *mode, int flag)
 {
  if(strcmp(mode, "on") == 0)
-   xorriso->do_aaip|= 16 | 32 | 64;
+   xorriso->do_aaip= (xorriso->do_aaip & ~128) | 16 | 32 | 64;
+ else if(strcmp(mode, "ino_only") == 0)
+   xorriso->do_aaip|= 16 | 32 | 64 | 128;
  else if(strcmp(mode, "off") == 0)
-   xorriso->do_aaip &= ~(16 | 32 | 64);
+   xorriso->do_aaip &= ~(16 | 32 | 64 | 128);
  else {
    sprintf(xorriso->info_text, "-disk_dev_ino: unknown mode '%s'", mode);
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "SORRY", 0);
@@ -13905,7 +13909,7 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "                 Enable resp. disable reading and writing of ACLs.",
 "  -xattr \"on\"|\"off\"",
 "                 Enable resp. disable reading and writing of xattr.",
-"  -disk_dev_ino \"on\"|\"off\"",
+"  -disk_dev_ino \"on\"|\"ino_only\"|\"off\"",
 "                 Enable resp. disable recording of disk file dev_t and ino_t",
 "                 and their use in file comparison.",
 "  -ban_stdio_write",

xorriso/xorriso_private.h

@@ -104,6 +104,7 @@ struct XorrisO { /* the global context of xorriso */
  int do_aaip; /* bit0= ACL in , bit1= ACL out , bit2= EA in , bit3= EA out
                  bit4= record dev,inode , bit5= check dev,inode
                  bit6= omit content check if dev,inode check is conclusive
+                 bit7= omit dev check mit bit5
               */
 
  int relax_compliance;        /* opaque bitfield to be set by xorrisoburn */

xorriso/xorriso_timestamp.h

@@ -1 +1 @@
-#define Xorriso_timestamP "2009.02.19.183707"
+#define Xorriso_timestamP "2009.02.25.144045"

xorriso/xorrisoburn.c

@@ -120,6 +120,12 @@ int Xorriso_path_from_node(struct XorrisO *xorriso, IsoNode *node, int lba,
          isoburn_igopt_always_gmt)
 
 
+/* <<< Whether to allow xattr and ACL with the root node.
+       (It is supposed to work since libisofs-ng resision 479)
+*/
+#define Xorriso_root_with_aaiP yes
+
+
 /* ------------------------------------------------------------------------ */
 
 
@@ -1694,6 +1700,35 @@ int Xorriso_get_volume(struct XorrisO *xorriso, IsoImage **volume,
  return(*volume != NULL);
 }
 
+/*
+   @param flag   bit0= do not issue warning
+*/
+int Xorriso_aaip_warn_of_root(struct XorrisO *xorriso, IsoNode *node, int flag)
+{
+
+#ifndef Xorriso_root_with_aaiP
+
+ int ret;
+ IsoDir *root= NULL;
+ IsoImage *volume;
+
+ ret= Xorriso_get_volume(xorriso, &volume, 0);
+ if(ret<=0)
+   return(ret);
+ root= iso_image_get_root(volume);
+ if(node == (IsoNode *) root) {
+   sprintf(xorriso->info_text,
+               "Cannot attach ACL or xattr to ISO root directory");
+   if(!(flag & 1))
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "WARNING", 0);
+   return(0);
+ }
+
+#endif /* ! Xorriso_root_with_aaiP */
+
+ return(1);
+}
+
 
 /* @param flag bit0=do not complain about non existent node */
 int Xorriso_node_from_path(struct XorrisO *xorriso, IsoImage *volume,
@@ -8838,7 +8873,7 @@ int Xorriso_getfname(struct XorrisO *xorriso, char *path, int flag)
                         strlen(path + path_offset), 8);
  if(ret <= 0)
    return(-1);
- sprintf(xorriso->result_line, "# file: %s\n", bsl_path);
+ sprintf(xorriso->result_line, "# file: %s\n", bsl_path[0] ? bsl_path : ".");
  free(bsl_path);
  bsl_path= NULL;
  /* temporarily disable -backslash_codes with result output */
@@ -9032,7 +9067,7 @@ int Xorriso_set_ignore_aclea(struct XorrisO *xorriso, int flag)
    @param path      is used as address if node is NULL.
    @param access_text  "access" ACL in long text form
    @param default_text "default" ACL in long text form
-   @param flag      Unused yet, submit 0
+   @param flag      bit0= do not warn of root directory if not capable of AAIP
    @return          >0 success , <=0 failure
 */
 int Xorriso_setfacl(struct XorrisO *xorriso, void *in_node, char *path,
@@ -9048,6 +9083,12 @@ int Xorriso_setfacl(struct XorrisO *xorriso, void *in_node, char *path,
      goto ex;
  }
 
+ ret= Xorriso_aaip_warn_of_root(xorriso, node, flag & 1);
+ if (ret < 0)
+   goto ex;
+ if (ret == 0)
+   {ret= 1; goto ex;}
+
 #ifdef Xorriso_with_aaiP
  ret= iso_node_set_acl_text(node, access_text, default_text, 0);
 #else
@@ -9169,6 +9210,7 @@ ex:;
                         bit1= Do not clear the existing attribute list
                         bit2= Delete the attributes with the given names
                         bit3= Allow non-user attributes.
+                        bit4= do not warn of root if incapable of AAIP
    @return              >0 success , <=0 failure
 */
 int Xorriso_setfattr(struct XorrisO *xorriso, void *in_node, char *path,
@@ -9185,6 +9227,12 @@ int Xorriso_setfattr(struct XorrisO *xorriso, void *in_node, char *path,
      goto ex;
  }
 
+ ret= Xorriso_aaip_warn_of_root(xorriso, node, !!(flag & 16));
+ if (ret < 0)
+   goto ex;
+ if (ret == 0)
+   {ret= 1; goto ex;}
+
 #ifdef Xorriso_with_aaiP
  ret= iso_node_set_attrs(node, num_attrs, names, value_lengths, values,
                          flag & (1 | 2 | 4 | 8));
@@ -9423,6 +9471,7 @@ ex:
                             -1=error
                bit5= if not bit0:
                      transfer dev,inode from eventual link target
+               bit7= omit dev check mit bit1
 */
 int Xorriso_record_dev_inode(struct XorrisO *xorriso, char *disk_path,
                              dev_t dev, ino_t ino,
@@ -9474,11 +9523,21 @@ int Xorriso_record_dev_inode(struct XorrisO *xorriso, char *disk_path,
      goto ex;
    if(ret == 0)
      {ret= 2; goto ex;}
+   if(flag & 128) {
+     if(di_l <= 0)
+       {ret= 1; goto ex;}
+     hino= 0;
+     for(i= di[0] + 2; i < di_l && i - di[0] - 2 < di[(int) di[0] + 1]; i++)
+       hino= (hino << 8) | ((unsigned char *) di)[i];
+     if(hino != ino)
+       {ret= 1; goto ex;} 
+   } else {
      if(l != di_l)
        {ret= 1; goto ex;}
      for(i= 0; i < l; i++)
        if(di[i] != buf[i])
          {ret= 1; goto ex;} 
+   }
    ret= 0;
  } else {
    ret= Xorriso_setfattr(xorriso, in_node, iso_path,