update doc

doc/html/66-update.html

@@ -32,7 +32,7 @@
 <h2>Interface</h2>
 
 	<pre>
-	66-udpate [ -h ] [ -v <em>verbosity</em> ] [ -c ] [ -l <em>live</em> ] <em>tree</em>
+	66-udpate [ -h ] [ -v <em>verbosity</em> ] [ -c ] [ -l <em>live</em> ] [ -d ] <em>tree</em>
 	</pre>
     <p>
         If no tree is given, all trees of the owner (root or user) of the process will be processed.
@@ -68,19 +68,26 @@
 		<li> 
 			<tt>-c&nbsp;</tt>&nbsp;: enable colorization.
 		</li>
-	</ul>
+       	<li> 
+			<tt>-d&nbsp;</tt>&nbsp;: dry run. Performs operation without 
+            modify the current state of the system. All command's output will 
+            be prefixed by "dry run do: " sentence. It's a good idea to 
+            first use this option before performing a real update. 
+		</li>
+	
+    </ul>
 
 <h2>Transition process</h2>
 
 <ul>
+    <li>
+        It saves the current state of the tree (current,enabled,...).
+    </li>
     <li>
         It determines if the tree is already initialized. In such case, it
         makes a copy of the current database on a temporary directory and
         switches the database to it.
     </li>
-    <li>
-        It saves the current state of the tree (current,enabled,...).
-    </li>
     <li>
         It destroys the tree with <tt><a href="66-tree.html">66-tree -R</a></tt> command. 
     </li>

doc/man/66-update.1.scd

@@ -6,7 +6,7 @@
 
 # SYNOPSYS
 
-66-scandir [ *-h* ] [ *-v* _verbosity_ ] [* -c* ] [ *-l* _live_ ]  _tree_
+66-update [ *-h* ] [ *-v* _verbosity_ ] [* -c* ] [ *-l* _live_ ] [ *-d* ]  _tree_
 
 # DESCRIPTION
 
@@ -41,6 +41,12 @@ without needing a reboot.
 	\--livedir=_live_ option to *./configure*. Should be under a writable
 	filesystem - likely a RAM filesystem.
 
+*-d*
+	dry run. Performs operation without modify the current state of the 
+	system. All command's output will be prefixed by "dry run do: " 
+	sentence. It's a good idea to first use this option before performing 
+	a real update.
+
 If no _tree_ is given, all trees of the owner (root or user) of the 
 process will be processed. In the case of user owned trees *66-update*
 must run separately for each user.

src/66/66-update.c

@@ -222,7 +222,7 @@ int main(int argc, char const *const *argv,char const *const *envp)
 
 		if (!satree.len)
 		{
-			log_info("No trees exist yet -- Nothing to do") ;
+			log_info(DRYRUN ? drun : "","No trees exist yet -- Nothing to do") ;
 			goto exit ;
 		}
 	}
@@ -364,9 +364,6 @@ int main(int argc, char const *const *argv,char const *const *envp)
 				if (!tree_copy(&WORKDIR,info.tree.s,info.treename.s)) 
 					log_dieusys_nclean(LOG_EXIT_SYS,&cleanup,"create tmp working directory") ;
 	
-	//			fdir = dir_create_tmp(&WORKDIR,"/tmp",info.treename.s) ;
-	//			if (!fdir) log_dieusys_nclean(LOG_EXIT_SYS,&cleanup,"create temporary directory") ;
-				
 				auto_strings(tmp,WORKDIR.s) ;
 			}
 			start_parser(&contents,&info,&nbsv,DRYRUN ? 1 : 0) ;