A helper file for cleanup.c.

[rsync/rsync.git] / io.c

diff --git a/io.c b/io.c
index c91007e..55aac4a 100644 (file)
--- a/io.c
+++ b/io.c
@@ -16,9 +16,9 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 /* Rsync provides its own multiplexing system, which is used to send
@@ -46,7 +46,7 @@ extern int read_batch;
 extern int csum_length;
 extern int checksum_seed;
 extern int protocol_version;
-extern int remove_sent_files;
+extern int remove_source_files;
 extern int preserve_hard_links;
 extern char *filesfrom_host;
 extern struct stats stats;
@@ -257,7 +257,7 @@ static void read_msg_fd(void)
                        exit_cleanup(RERR_STREAMIO);
                }
                read_loop(fd, buf, 4);
-               if (remove_sent_files)
+               if (remove_source_files)
                        decrement_active_files(IVAL(buf,0));
                flist_ndx_push(&redo_list, IVAL(buf,0));
                break;
@@ -267,10 +267,7 @@ static void read_msg_fd(void)
                        exit_cleanup(RERR_STREAMIO);
                }
                read_loop(fd, buf, len);
-               if (defer_forwarding_messages)
-                       msg_list_add(&msg2sndr, MSG_DELETED, buf, len);
-               else
-                       io_multiplex_write(MSG_DELETED, buf, len);
+               send_msg(MSG_DELETED, buf, len);
                break;
        case MSG_SUCCESS:
                if (len != 4 || !am_generator) {
@@ -278,12 +275,9 @@ static void read_msg_fd(void)
                        exit_cleanup(RERR_STREAMIO);
                }
                read_loop(fd, buf, len);
-               if (remove_sent_files) {
+               if (remove_source_files) {
                        decrement_active_files(IVAL(buf,0));
-                       if (defer_forwarding_messages)
-                               msg_list_add(&msg2sndr, MSG_SUCCESS, buf, len);
-                       else
-                               io_multiplex_write(MSG_SUCCESS, buf, len);
+                       send_msg(MSG_SUCCESS, buf, len);
                }
                if (preserve_hard_links)
                        flist_ndx_push(&hlink_list, IVAL(buf,0));
@@ -303,10 +297,7 @@ static void read_msg_fd(void)
                        if (n >= sizeof buf)
                                n = sizeof buf - 1;
                        read_loop(fd, buf, n);
-                       if (am_generator && am_server && defer_forwarding_messages)
-                               msg_list_add(&msg2sndr, tag, buf, n);
-                       else
-                               rwrite((enum logcode)tag, buf, n);
+                       rwrite(tag, buf, n);
                        len -= n;
                }
                break;
@@ -320,7 +311,7 @@ static void read_msg_fd(void)
 }
 
 /* This is used by the generator to limit how many file transfers can
- * be active at once when --remove-sent-files is specified.  Without
+ * be active at once when --remove-source-files is specified.  Without
  * this, sender-side deletions were mostly happening at the end. */
 void increment_active_files(int ndx, int itemizing, enum logcode code)
 {
@@ -380,14 +371,19 @@ static int msg2genr_flush(int flush_it_all)
        return 1;
 }
 
-void send_msg(enum msgcode code, char *buf, int len)
+int send_msg(enum msgcode code, char *buf, int len)
 {
        if (msg_fd_out < 0) {
-               io_multiplex_write(code, buf, len);
-               return;
+               if (!defer_forwarding_messages)
+                       return io_multiplex_write(code, buf, len);
+               if (!io_multiplexing_out)
+                       return 0;
+               msg_list_add(&msg2sndr, code, buf, len);
+               return 1;
        }
        msg_list_add(&msg2genr, code, buf, len);
        msg2genr_flush(NORMAL_FLUSH);
+       return 1;
 }
 
 int get_redo_num(int itemizing, enum logcode code)
@@ -637,13 +633,19 @@ int read_filesfrom_line(int fd, char *fname)
                if (cnt < 0 && (errno == EWOULDBLOCK
                  || errno == EINTR || errno == EAGAIN)) {
                        struct timeval tv;
-                       fd_set fds;
-                       FD_ZERO(&fds);
-                       FD_SET(fd, &fds);
+                       fd_set r_fds, e_fds;
+                       FD_ZERO(&r_fds);
+                       FD_SET(fd, &r_fds);
+                       FD_ZERO(&e_fds);
+                       FD_SET(fd, &e_fds);
                        tv.tv_sec = select_timeout;
                        tv.tv_usec = 0;
-                       if (!select(fd+1, &fds, NULL, NULL, &tv))
+                       if (!select(fd+1, &r_fds, NULL, &e_fds, &tv))
                                check_timeout();
+                       if (FD_ISSET(fd, &e_fds)) {
+                               rsyserr(FINFO, errno,
+                                       "select exception on fd %d", fd);
+                       }
                        continue;
                }
                if (cnt != 1)
@@ -1040,7 +1042,7 @@ static void sleep_for_bwlimit(int bytes_written)
 static void writefd_unbuffered(int fd,char *buf,size_t len)
 {
        size_t n, total = 0;
-       fd_set w_fds, r_fds;
+       fd_set w_fds, r_fds, e_fds;
        int maxfd, count, cnt, using_r_fds;
        int defer_save = defer_forwarding_messages;
        struct timeval tv;
@@ -1049,12 +1051,14 @@ static void writefd_unbuffered(int fd,char *buf,size_t len)
 
        while (total < len) {
                FD_ZERO(&w_fds);
-               FD_SET(fd,&w_fds);
+               FD_SET(fd, &w_fds);
+               FD_ZERO(&e_fds);
+               FD_SET(fd, &e_fds);
                maxfd = fd;
 
                if (msg_fd_in >= 0) {
                        FD_ZERO(&r_fds);
-                       FD_SET(msg_fd_in,&r_fds);
+                       FD_SET(msg_fd_in, &r_fds);
                        if (msg_fd_in > maxfd)
                                maxfd = msg_fd_in;
                        using_r_fds = 1;
@@ -1066,7 +1070,7 @@ static void writefd_unbuffered(int fd,char *buf,size_t len)
 
                errno = 0;
                count = select(maxfd + 1, using_r_fds ? &r_fds : NULL,
-                              &w_fds, NULL, &tv);
+                              &w_fds, &e_fds, &tv);
 
                if (count <= 0) {
                        if (count < 0 && errno == EBADF)
@@ -1075,6 +1079,11 @@ static void writefd_unbuffered(int fd,char *buf,size_t len)
                        continue;
                }
 
+               if (FD_ISSET(fd, &e_fds)) {
+                       rsyserr(FINFO, errno,
+                               "select exception on fd %d", fd);
+               }
+
                if (using_r_fds && FD_ISSET(msg_fd_in, &r_fds))
                        read_msg_fd();