damn.
[rsync/rsync.git] / main.c
diff --git a/main.c b/main.c
index 737a78a..ac5c1d2 100644 (file)
--- a/main.c
+++ b/main.c
@@ -23,8 +23,6 @@ time_t starttime = 0;
 
 struct stats stats;
 
-extern int csum_length;
-
 extern int verbose;
 
 static void report(int f)
@@ -34,32 +32,46 @@ static void report(int f)
        extern int am_sender;
        extern int am_daemon;
        extern int do_stats;
+       extern int remote_version;
+       int send_stats;
 
        if (am_daemon) {
                log_exit(0, __FILE__, __LINE__);
                if (f == -1 || !am_sender) return;
        }
 
-       if (!verbose) return;
-
-       if (am_server && !am_sender) return;
-
-       if (am_server && am_sender) {
-               write_longint(f,stats.total_read);
-               write_longint(f,stats.total_written);
-               write_longint(f,stats.total_size);
+       send_stats = verbose || (remote_version >= 20);
+       if (am_server) {
+               if (am_sender && send_stats) {
+                       int64 w;
+                       /* store total_written in a temporary
+                           because write_longint changes it */
+                       w = stats.total_written;
+                       write_longint(f,stats.total_read);
+                       write_longint(f,w);
+                       write_longint(f,stats.total_size);
+               }
                return;
        }
-    
-       if (!am_sender) {
+
+       /* this is the client */
+           
+       if (!am_sender && send_stats) {
                int64 r;
                stats.total_written = read_longint(f);
+               /* store total_read in a temporary, read_longint changes it */
                r = read_longint(f);
                stats.total_size = read_longint(f);
                stats.total_read = r;
        }
 
        if (do_stats) {
+               if (!am_sender && !send_stats) {
+                   /* missing the bytes written by the generator */
+                   rprintf(FINFO, "\nCannot show stats as receiver because remote protocol version is less than 20\n");
+                   rprintf(FINFO, "Use --stats -v to show stats\n");
+                   return;
+               }
                rprintf(FINFO,"\nNumber of files: %d\n", stats.num_files);
                rprintf(FINFO,"Number of files transferred: %d\n", 
                       stats.num_transferred_files);
@@ -78,13 +90,15 @@ static void report(int f)
                       (double)stats.total_read);
        }
        
-       rprintf(FINFO,"wrote %.0f bytes  read %.0f bytes  %.2f bytes/sec\n",
-              (double)stats.total_written,
-              (double)stats.total_read,
-              (stats.total_written+stats.total_read)/(0.5 + (t-starttime)));
-       rprintf(FINFO,"total size is %.0f  speedup is %.2f\n",
-              (double)stats.total_size,
-              (1.0*stats.total_size)/(stats.total_written+stats.total_read));
+       if (verbose || do_stats) {
+               rprintf(FINFO,"wrote %.0f bytes  read %.0f bytes  %.2f bytes/sec\n",
+                      (double)stats.total_written,
+                      (double)stats.total_read,
+                      (stats.total_written+stats.total_read)/(0.5 + (t-starttime)));
+               rprintf(FINFO,"total size is %.0f  speedup is %.2f\n",
+                      (double)stats.total_size,
+                      (1.0*stats.total_size)/(stats.total_written+stats.total_read));
+       }
 
        fflush(stdout);
        fflush(stderr);
@@ -171,7 +185,10 @@ static char *get_local_name(struct file_list *flist,char *name)
 
        if (verbose > 2)
                rprintf(FINFO,"get_local_name count=%d %s\n", 
-                       flist->count, name);
+                       flist->count, NS(name));
+
+       if (!name) 
+               return NULL;
 
        if (do_stat(name,&st) == 0) {
                if (S_ISDIR(st.st_mode)) {
@@ -189,12 +206,9 @@ static char *get_local_name(struct file_list *flist,char *name)
                return name;
        }
 
-       if (flist->count == 1)
+       if (flist->count <= 1)
                return name;
 
-       if (!name) 
-               return NULL;
-
        if (do_mkdir(name,0777 & ~orig_umask) != 0) {
                rprintf(FERROR,"mkdir %s : %s (1)\n",name,strerror(errno));
                exit_cleanup(RERR_FILEIO);
@@ -247,10 +261,6 @@ static void do_server_sender(int f_in, int f_out, int argc,char *argv[])
                argv[0] = ".";
        }
        
-       set_nonblocking(f_out);
-       if (f_in != f_out)
-               set_nonblocking(f_in);
-               
        flist = send_file_list(f_out,argc,argv);
        if (!flist || flist->count == 0) {
                exit_cleanup(0);
@@ -268,45 +278,73 @@ static int do_recv(int f_in,int f_out,struct file_list *flist,char *local_name)
        int pid;
        int status=0;
        int recv_pipe[2];
+       int error_pipe[2];
        extern int preserve_hard_links;
+       extern int delete_after;
+       extern int recurse;
+       extern int delete_mode;
+       extern int remote_version;
 
        if (preserve_hard_links)
                init_hard_links(flist);
 
-       if (pipe(recv_pipe) < 0) {
+       if (!delete_after) {
+               /* I moved this here from recv_files() to prevent a race condition */
+               if (recurse && delete_mode && !local_name && flist->count>0) {
+                       delete_files(flist);
+               }
+       }
+
+       if (fd_pair(recv_pipe) < 0) {
                rprintf(FERROR,"pipe failed in do_recv\n");
                exit_cleanup(RERR_SOCKETIO);
        }
+
+       if (fd_pair(error_pipe) < 0) {
+               rprintf(FERROR,"error pipe failed in do_recv\n");
+               exit_cleanup(RERR_SOCKETIO);
+       }
   
        io_flush();
 
        if ((pid=do_fork()) == 0) {
                close(recv_pipe[0]);
+               close(error_pipe[0]);
                if (f_in != f_out) close(f_out);
 
-               set_nonblocking(f_in);
-               set_nonblocking(recv_pipe[1]);
+               /* we can't let two processes write to the socket at one time */
+               io_multiplexing_close();
+
+               /* set place to send errors */
+               set_error_fd(error_pipe[1]);
 
                recv_files(f_in,flist,local_name,recv_pipe[1]);
                report(f_in);
 
+               write_int(recv_pipe[1],-1);
                io_flush();
                _exit(0);
        }
 
        close(recv_pipe[1]);
+       close(error_pipe[1]);
        io_close_input(f_in);
        if (f_in != f_out) close(f_in);
 
-       set_nonblocking(f_out);
-       set_nonblocking(recv_pipe[0]);
-
        io_start_buffering(f_out);
 
+       io_set_error_fd(error_pipe[0]);
+
        generate_files(f_out,flist,local_name,recv_pipe[0]);
 
+       read_int(recv_pipe[1]);
+       if (remote_version >= 24) {
+               /* send a final goodbye message */
+               write_int(f_out, -1);
+       }
        io_flush();
-       waitpid(pid, &status, 0);
+
+       wait_process(pid, &status);
        return status;
 }
 
@@ -318,10 +356,20 @@ static void do_server_recv(int f_in, int f_out, int argc,char *argv[])
        char *local_name=NULL;
        char *dir = NULL;
        extern int delete_mode;
+       extern int delete_excluded;
        extern int am_daemon;
+       extern int module_id;
+       extern int am_sender;
 
        if (verbose > 2)
                rprintf(FINFO,"server_recv(%d) starting pid=%d\n",argc,(int)getpid());
+
+       if (am_daemon && lp_read_only(module_id) && !am_sender) {
+               rprintf(FERROR,"ERROR: module is read only\n");
+               exit_cleanup(RERR_SYNTAX);
+               return;
+       }
+
        
        if (argc > 0) {
                dir = argv[0];
@@ -334,12 +382,12 @@ static void do_server_recv(int f_in, int f_out, int argc,char *argv[])
                }    
        }
 
-       if (delete_mode)
+       if (delete_mode && !delete_excluded)
                recv_exclude_list(f_in);
 
        flist = recv_file_list(f_in);
-       if (!flist || flist->count == 0) {
-               rprintf(FERROR,"server_recv: nothing to do\n");
+       if (!flist) {
+               rprintf(FERROR,"server_recv: recv_file_list error\n");
                exit_cleanup(RERR_FILESELECT);
        }
        
@@ -360,13 +408,13 @@ void start_server(int f_in, int f_out, int argc, char *argv[])
 {
        extern int cvs_exclude;
        extern int am_sender;
+       extern int remote_version;
 
-       set_nonblocking(f_out);
-       if (f_in != f_out)
-               set_nonblocking(f_in);
-                       
        setup_protocol(f_out, f_in);
 
+       if (remote_version >= 23)
+               io_start_multiplex_out(f_out);
+
        if (am_sender) {
                recv_exclude_list(f_in);
                if (cvs_exclude)
@@ -385,32 +433,37 @@ int client_run(int f_in, int f_out, int pid, int argc, char *argv[])
        char *local_name = NULL;
        extern int am_sender;
        extern int list_only;
+       extern int remote_version;
 
        setup_protocol(f_out,f_in);
+
+       if (remote_version >= 23)
+               io_start_multiplex_in(f_in);
        
        if (am_sender) {
                extern int cvs_exclude;
                extern int delete_mode;
+               extern int delete_excluded;
                if (cvs_exclude)
                        add_cvs_excludes();
-               if (delete_mode) 
+               if (delete_mode && !delete_excluded
                        send_exclude_list(f_out);
                flist = send_file_list(f_out,argc,argv);
                if (verbose > 3) 
                        rprintf(FINFO,"file list sent\n");
 
-               set_nonblocking(f_out);
-               if (f_in != f_out)
-                       set_nonblocking(f_in);
-
                send_files(flist,f_out,f_in);
                if (pid != -1) {
                        if (verbose > 3)
                                rprintf(FINFO,"client_run waiting on %d\n",pid);
                        io_flush();
-                       waitpid(pid, &status, 0);
+                       wait_process(pid, &status);
                }
                report(-1);
+               if (remote_version >= 24) {
+                       /* final goodbye message */             
+                       read_int(f_in);
+               }
                exit_cleanup(status);
        }
 
@@ -432,7 +485,7 @@ int client_run(int f_in, int f_out, int pid, int argc, char *argv[])
                if (verbose > 3)
                        rprintf(FINFO,"client_run2 waiting on %d\n",pid);
                io_flush();
-               waitpid(pid, &status, 0);
+               wait_process(pid, &status);
        }
        
        return status | status2;
@@ -592,7 +645,7 @@ int main(int argc,char *argv[])
           carried across */
        orig_umask = (int)umask(0);
 
-       if (!parse_arguments(argc, argv)) {
+       if (!parse_arguments(argc, argv, 1)) {
                exit_cleanup(RERR_SYNTAX);
        }
 
@@ -606,6 +659,12 @@ int main(int argc,char *argv[])
        signal(SIGHUP,SIGNAL_CAST sig_int);
        signal(SIGTERM,SIGNAL_CAST sig_int);
 
+       /* Initialize push_dir here because on some old systems getcwd
+          (implemented by forking "pwd" and reading its output) doesn't
+          work when there are other child processes.  Also, on all systems
+          that implement getcwd that way "pwd" can't be found after chroot. */
+       push_dir(NULL,0);
+
        if (am_daemon) {
                return daemon_main();
        }