s6-rc-update make already a rollback

src/lib66/db_switch_to.c

@@ -47,7 +47,7 @@ int db_switch_to(ssexec_t *info, char const *const *envp,unsigned int where)
 	r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
 	if (r < 0)
 	{
-		VERBO3 strerr_warnwu2sys("find origin of db service for: ",info->treename.s) ;
+		VERBO3 strerr_warnwu2sys("find realpath of symlink for db of tree: ",info->treename.s) ;
 		goto err ;
 	}
 	// point to origin
@@ -59,13 +59,13 @@ int db_switch_to(ssexec_t *info, char const *const *envp,unsigned int where)
 			VERBO3 strerr_warnwu2sys("make a backup of db service for: ",info->treename.s) ;
 			goto err ;
 		}
-		VERBO3 strerr_warnt3x("switch db service for tree: ",info->treename.s," to backup") ;
+		VERBO3 strerr_warnt3x("switch db symlink of tree: ",info->treename.s," to backup") ;
 		memcpy(cmd + cmdlen," -s1",4) ;
 		cmd[cmdlen + 4] = 0 ;
 		r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
 		if (r < 0)
 		{
-			VERBO3 strerr_warnwu3sys("switch db service for: ",info->treename.s," to backup") ;
+			VERBO3 strerr_warnwu3sys("switch db symlink of tree: ",info->treename.s," to backup") ;
 			goto err ;
 		}
 		if (db_ok(info->livetree.s, info->treename.s))
@@ -83,11 +83,13 @@ int db_switch_to(ssexec_t *info, char const *const *envp,unsigned int where)
 				r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
 				if (r < 0)
 				{
-					VERBO3 strerr_warnwu3sys("switch db service for: ",info->treename.s," to source") ;
+					VERBO3 strerr_warnwu3sys("switch db symlink of tree: ",info->treename.s," to source") ;
 					goto err ;
 				}
-				db = stralloc_zero ;
-				if (!backup_realpath_sym(&db,info,LONGRUN))
+				//db.len = 0 ;
+				/** in case of crash s6-rc-update copy again the old db to the 
+				 * original place, we need to update only the symlink */
+				/*if (!backup_realpath_sym(&db,info,LONGRUN))
 				{
 					VERBO3 strerr_warnwu2sys("find path of db service for: ",info->treename.s) ;
 					goto err ;
@@ -97,19 +99,19 @@ int db_switch_to(ssexec_t *info, char const *const *envp,unsigned int where)
 					VERBO3 strerr_warnwu3sys("switch: ",info->treename.s," to source") ;
 					VERBO3 strerr_warnwu1sys("unable to rollback the db state, please make a bug report") ;
 					goto err ;
-				}
+				}*/
 			}			
 		}
 	}
 	else if (r > 0 && !where)
 	{
-		VERBO3 strerr_warnt3x("switch db service for tree: ",info->treename.s," to source") ;
+		VERBO3 strerr_warnt3x("switch db symlink of tree: ",info->treename.s," to source") ;
 		memcpy(cmd + cmdlen," -s0",4) ;
 		cmd[cmdlen + 4] = 0 ;
 		r = backup_cmd_switcher(VERBOSITY,cmd,info) ;
 		if (r < 0)
 		{
-			VERBO3 strerr_warnwu3sys("switch db service for: ",info->treename.s," to source") ;
+			VERBO3 strerr_warnwu3sys("switch db symlink of tree: ",info->treename.s," to source") ;
 			goto err ;
 		}
 		
@@ -132,8 +134,8 @@ int db_switch_to(ssexec_t *info, char const *const *envp,unsigned int where)
 					VERBO3 strerr_warnwu3sys("switch db service for: ",info->treename.s," to backup") ;
 					goto err ;
 				}
-				db = stralloc_zero ;
-				if (!backup_realpath_sym(&db,info,LONGRUN))
+				//db.len = 0 ;
+				/*if (!backup_realpath_sym(&db,info,LONGRUN))
 				{
 					VERBO3 strerr_warnwu2sys("find path of db: ",info->treename.s) ;
 					goto err ;
@@ -143,7 +145,7 @@ int db_switch_to(ssexec_t *info, char const *const *envp,unsigned int where)
 					VERBO3 strerr_warnwu3sys("switch: ",info->treename.s," to source") ;
 					VERBO3 strerr_warnwu1sys("unable to rollback the db state, please make a bug report") ;
 					goto err ;
-				}
+				}*/
 			}
 		}
 		VERBO3 strerr_warnt2x("make a backup of db service for: ",info->treename.s) ;