The improved --xattrs option is landing on the trunk.
[rsync/rsync.git] / sender.c
index a42042b..8a3a7d5 100644 (file)
--- a/sender.c
+++ b/sender.c
@@ -1,32 +1,50 @@
-/* 
-   Copyright (C) Andrew Tridgell 1996
-   Copyright (C) Paul Mackerras 1996
-   
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
-   (at your option) any later version.
-   
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+/*
+ * Routines only used by the sending process.
+ *
+ * Copyright (C) 1996 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2003-2007 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * 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.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
 
 #include "rsync.h"
 
 extern int verbose;
-extern int remote_version;
-extern int csum_length;
-extern struct stats stats;
-extern int io_error;
 extern int dry_run;
+extern int do_xfers;
 extern int am_server;
-
+extern int am_daemon;
+extern int inc_recurse;
+extern int log_before_transfer;
+extern int stdout_format_has_i;
+extern int logfile_format_has_i;
+extern int csum_length;
+extern int append_mode;
+extern int io_error;
+extern int allowed_lull;
+extern int preserve_xattrs;
+extern int protocol_version;
+extern int remove_source_files;
+extern int updating_basis_file;
+extern int make_backups;
+extern int do_progress;
+extern int inplace;
+extern int batch_fd;
+extern int write_batch;
+extern struct stats stats;
+extern struct file_list *cur_flist, *first_flist;
 
 /**
  * @file
@@ -36,51 +54,63 @@ extern int am_server;
  * machine holding the source files.
  **/
 
-
 /**
  * Receive the checksums for a buffer
  **/
 static struct sum_struct *receive_sums(int f)
 {
        struct sum_struct *s;
-       int i;
+       int32 i;
+       int lull_mod = allowed_lull * 5;
        OFF_T offset = 0;
 
-       s = (struct sum_struct *)malloc(sizeof(*s));
-       if (!s) out_of_memory("receive_sums");
+       if (!(s = new(struct sum_struct)))
+               out_of_memory("receive_sums");
+
+       read_sum_head(f, s);
 
-       s->count = read_int(f);
-       s->n = read_int(f);
-       s->remainder = read_int(f);  
        s->sums = NULL;
 
-       if (verbose > 3)
-               rprintf(FINFO,"count=%ld n=%ld rem=%ld\n",
-                       (long) s->count, (long) s->n, (long) s->remainder);
+       if (verbose > 3) {
+               rprintf(FINFO, "count=%.0f n=%ld rem=%ld\n",
+                       (double)s->count, (long)s->blength, (long)s->remainder);
+       }
+
+       if (append_mode > 0) {
+               s->flength = (OFF_T)s->count * s->blength;
+               if (s->remainder)
+                       s->flength -= s->blength - s->remainder;
+               return s;
+       }
 
-       if (s->count == 0) 
+       if (s->count == 0)
                return(s);
 
-       s->sums = (struct sum_buf *)malloc(sizeof(s->sums[0])*s->count);
-       if (!s->sums) out_of_memory("receive_sums");
+       if (!(s->sums = new_array(struct sum_buf, s->count)))
+               out_of_memory("receive_sums");
 
-       for (i=0; i < (int) s->count;i++) {
+       for (i = 0; i < s->count; i++) {
                s->sums[i].sum1 = read_int(f);
-               read_buf(f,s->sums[i].sum2,csum_length);
+               read_buf(f, s->sums[i].sum2, s->s2length);
 
                s->sums[i].offset = offset;
-               s->sums[i].i = i;
+               s->sums[i].flags = 0;
 
-               if (i == (int) s->count-1 && s->remainder != 0) {
+               if (i == s->count-1 && s->remainder != 0)
                        s->sums[i].len = s->remainder;
-               } else {
-                       s->sums[i].len = s->n;
-               }
+               else
+                       s->sums[i].len = s->blength;
                offset += s->sums[i].len;
 
-               if (verbose > 3)
-                       rprintf(FINFO,"chunk[%d] len=%d offset=%.0f sum1=%08x\n",
-                               i,s->sums[i].len,(double)s->sums[i].offset,s->sums[i].sum1);
+               if (allowed_lull && !(i % lull_mod))
+                       maybe_send_keepalive();
+
+               if (verbose > 3) {
+                       rprintf(FINFO,
+                               "chunk[%d] len=%d offset=%.0f sum1=%08x\n",
+                               i, s->sums[i].len, (double)s->sums[i].offset,
+                               s->sums[i].sum1);
+               }
        }
 
        s->flength = offset;
@@ -88,215 +118,256 @@ static struct sum_struct *receive_sums(int f)
        return s;
 }
 
+void successful_send(int ndx)
+{
+       char fname[MAXPATHLEN];
+       struct file_struct *file;
+       struct file_list *flist;
+
+       if (!remove_source_files)
+               return;
+
+       if (!(flist = flist_for_ndx(ndx))) {
+               rprintf(FERROR,
+                       "INTERNAL ERROR: unable to find flist for item %d\n",
+                       ndx);
+               return;
+       }
+
+       file = flist->files[ndx - flist->ndx_start];
+       if (!push_flist_dir(F_ROOTDIR(file), -1))
+               return;
+       f_name(file, fname);
 
+       if (do_unlink(fname) == 0) {
+               if (verbose > 1)
+                       rprintf(FINFO, "sender removed %s\n", fname);
+       } else
+               rsyserr(FERROR, errno, "sender failed to remove %s", fname);
+}
 
-void send_files(struct file_list *flist,int f_out,int f_in)
-{ 
+static void write_ndx_and_attrs(int f_out, int ndx, int iflags,
+                               const char *fname, struct file_struct *file,
+                               uchar fnamecmp_type, char *buf, int len)
+{
+       write_ndx(f_out, ndx);
+       if (protocol_version < 29)
+               return;
+       write_shortint(f_out, iflags);
+       if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
+               write_byte(f_out, fnamecmp_type);
+       if (iflags & ITEM_XNAME_FOLLOWS)
+               write_vstring(f_out, buf, len);
+#ifdef SUPPORT_XATTRS
+       if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
+               send_xattr_request(fname, file, f_out);
+#endif
+}
+
+void send_files(int f_in, int f_out)
+{
        int fd = -1;
        struct sum_struct *s;
-       struct map_struct *buf = NULL;
+       struct map_struct *mbuf = NULL;
        STRUCT_STAT st;
-       char fname[MAXPATHLEN];  
-       int i;
+       char fname[MAXPATHLEN], xname[MAXPATHLEN];
+       const char *path, *slash;
+       uchar fnamecmp_type;
+       int iflags, xlen;
        struct file_struct *file;
-       int phase = 0;
-       extern struct stats stats;              
+       int phase = 0, max_phase = protocol_version >= 29 ? 2 : 1;
        struct stats initial_stats;
-       extern int write_batch;   /* dw */
-       extern int read_batch;    /* dw */
-       int checksums_match;   /* dw */
-       int buff_len;  /* dw */
-       char buff[CHUNK_SIZE];    /* dw */
-       int j;   /* dw */
-       int done;   /* dw */
+       int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
+       enum logcode log_code = log_before_transfer ? FLOG : FINFO;
+       int f_xfer = write_batch < 0 ? batch_fd : f_out;
+       int ndx, j;
 
        if (verbose > 2)
-               rprintf(FINFO,"send_files starting\n");
+               rprintf(FINFO, "send_files starting\n");
 
        while (1) {
-               int offset=0;
-
-               i = read_int(f_in);
-               if (i == -1) {
-                       if (phase==0 && remote_version >= 13) {
-                               phase++;
-                               csum_length = SUM_LENGTH;
-                               write_int(f_out,-1);
-                               if (verbose > 2)
-                                       rprintf(FINFO,"send_files phase=%d\n",phase);
-                               continue;
+               if (inc_recurse)
+                       send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
+
+               /* This call also sets cur_flist. */
+               ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
+                                        xname, &xlen);
+               if (ndx == NDX_DONE) {
+                       if (inc_recurse && first_flist) {
+                               flist_free(first_flist);
+                               if (first_flist) {
+                                       write_ndx(f_out, NDX_DONE);
+                                       continue;
+                               }
                        }
-                       break;
+                       if (++phase > max_phase)
+                               break;
+                       if (verbose > 2)
+                               rprintf(FINFO, "send_files phase=%d\n", phase);
+                       write_ndx(f_out, NDX_DONE);
+                       continue;
                }
 
-               if (i < 0 || i >= flist->count) {
-                       rprintf(FERROR,"Invalid file index %d (count=%d)\n", 
-                               i, flist->count);
-                       exit_cleanup(RERR_PROTOCOL);
+               if (inc_recurse)
+                       send_extra_file_list(f_out, FILECNT_LOOKAHEAD);
+
+               file = cur_flist->files[ndx - cur_flist->ndx_start];
+               if (F_ROOTDIR(file)) {
+                       path = F_ROOTDIR(file);
+                       slash = "/";
+               } else {
+                       path = slash = "";
                }
+               if (!push_flist_dir(F_ROOTDIR(file), -1))
+                       continue;
+               f_name(file, fname);
 
-               file = flist->files[i];
+               if (verbose > 2)
+                       rprintf(FINFO, "send_files(%d, %s%s%s)\n", ndx, path,slash,fname);
 
-               stats.num_transferred_files++;
-               stats.total_transferred_size += file->length;
-
-               fname[0] = 0;
-               if (file->basedir) {
-                       strlcpy(fname,file->basedir,MAXPATHLEN);
-                       if (strlen(fname) == MAXPATHLEN-1) {
-                               io_error = 1;
-                               rprintf(FERROR, "send_files failed on long-named directory %s\n",
-                                       fname);
-                               return;
-                       }
-                       strlcat(fname,"/",MAXPATHLEN);
-                       offset = strlen(file->basedir)+1;
+#ifdef SUPPORT_XATTRS
+               if (preserve_xattrs && iflags & ITEM_REPORT_XATTR)
+                       recv_xattr_request(file, f_in);
+#endif
+
+               if (!(iflags & ITEM_TRANSFER)) {
+                       maybe_log_item(file, iflags, itemizing, xname);
+                       write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
+                                           fnamecmp_type, xname, xlen);
+                       continue;
+               }
+               if (phase == 2) {
+                       rprintf(FERROR,
+                               "got transfer request in phase 2 [%s]\n",
+                               who_am_i());
+                       exit_cleanup(RERR_PROTOCOL);
                }
-               strlcat(fname,f_name(file),MAXPATHLEN);
-         
-               if (verbose > 2) 
-                       rprintf(FINFO,"send_files(%d,%s)\n",i,fname);
-         
-               if (dry_run) {  
-                       if (!am_server && verbose) {    /* log transfer */
-                               rprintf(FINFO, "%s\n", fname+offset);
+
+               if (file->flags & FLAG_FILE_SENT) {
+                       if (csum_length == SHORT_SUM_LENGTH) {
+                               /* For inplace: redo phase turns off the backup
+                                * flag so that we do a regular inplace send. */
+                               make_backups = -make_backups;
+                               append_mode = -append_mode;
+                               csum_length = SUM_LENGTH;
                        }
-                       write_int(f_out,i);
+               } else {
+                       if (csum_length != SHORT_SUM_LENGTH) {
+                               make_backups = -make_backups;
+                               append_mode = -append_mode;
+                               csum_length = SHORT_SUM_LENGTH;
+                       }
+               }
+
+               updating_basis_file = inplace && (protocol_version >= 29
+                       ? fnamecmp_type == FNAMECMP_FNAME : make_backups <= 0);
+
+               stats.current_file_index = ndx;
+               stats.num_transferred_files++;
+               stats.total_transferred_size += F_LENGTH(file);
+
+               if (!do_xfers) { /* log the transfer */
+                       log_item(FCLIENT, file, &stats, iflags, NULL);
+                       write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
+                                           fnamecmp_type, xname, xlen);
                        continue;
                }
 
                initial_stats = stats;
 
-               s = receive_sums(f_in);
-               if (!s) {
-                       io_error = 1;
-                       rprintf(FERROR,"receive_sums failed\n");
-                       return;
+               if (!(s = receive_sums(f_in))) {
+                       io_error |= IOERR_GENERAL;
+                       rprintf(FERROR, "receive_sums failed\n");
+                       exit_cleanup(RERR_PROTOCOL);
                }
 
-               if (write_batch)
-                   write_batch_csum_info(&i,flist->count,s);
-         
-               if (!read_batch) {
-                       fd = do_open(fname, O_RDONLY, 0);
-                       if (fd == -1) {
-                               io_error = 1;
-                               rprintf(FERROR,"send_files failed to open %s: %s\n",
-                                       fname,strerror(errno));
-                               free_sums(s);
-                               continue;
-                       }
-         
-                       /* map the local file */
-                       if (do_fstat(fd,&st) != 0) {
-                               io_error = 1;
-                               rprintf(FERROR,"fstat failed : %s\n",strerror(errno));
-                               free_sums(s);
-                               close(fd);
-                               return;
-                       }
-         
-                       if (st.st_size > 0) {
-                               buf = map_file(fd,st.st_size);
+               fd = do_open(fname, O_RDONLY, 0);
+               if (fd == -1) {
+                       if (errno == ENOENT) {
+                               enum logcode c = am_daemon
+                                   && protocol_version < 28 ? FERROR
+                                                            : FINFO;
+                               io_error |= IOERR_VANISHED;
+                               rprintf(c, "file has vanished: %s\n",
+                                       full_fname(fname));
                        } else {
-                               buf = NULL;
+                               io_error |= IOERR_GENERAL;
+                               rsyserr(FERROR, errno,
+                                       "send_files failed to open %s",
+                                       full_fname(fname));
                        }
-         
-                       if (verbose > 2)
-                               rprintf(FINFO,"send_files mapped %s of size %.0f\n",
-                                       fname,(double)st.st_size);
+                       free_sums(s);
+                       if (protocol_version >= 30)
+                               send_msg_int(MSG_NO_SEND, ndx);
+                       continue;
+               }
 
-                       write_int(f_out,i);
-         
-                       if (write_batch)
-                               write_batch_delta_file((char *)&i,sizeof(i));
+               /* map the local file */
+               if (do_fstat(fd, &st) != 0) {
+                       io_error |= IOERR_GENERAL;
+                       rsyserr(FERROR, errno, "fstat failed");
+                       free_sums(s);
+                       close(fd);
+                       exit_cleanup(RERR_PROTOCOL);
+               }
+
+               if (st.st_size) {
+                       int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
+                       mbuf = map_file(fd, st.st_size, read_size, s->blength);
+               } else
+                       mbuf = NULL;
 
-                       write_int(f_out,s->count);
-                       write_int(f_out,s->n);
-                       write_int(f_out,s->remainder);
+               if (verbose > 2) {
+                       rprintf(FINFO, "send_files mapped %s%s%s of size %.0f\n",
+                               path,slash,fname, (double)st.st_size);
                }
-         
+
+               write_ndx_and_attrs(f_out, ndx, iflags, fname, file,
+                                   fnamecmp_type, xname, xlen);
+               write_sum_head(f_xfer, s);
+
                if (verbose > 2)
-                       if (!read_batch)
-                           rprintf(FINFO,"calling match_sums %s\n",fname);
-         
-               if (!am_server && verbose) {    /* log transfer */
-                       rprintf(FINFO, "%s\n", fname+offset);
-               }
+                       rprintf(FINFO, "calling match_sums %s%s%s\n", path,slash,fname);
+
+               if (log_before_transfer)
+                       log_item(FCLIENT, file, &initial_stats, iflags, NULL);
+               else if (!am_server && verbose && do_progress)
+                       rprintf(FCLIENT, "%s\n", fname);
 
                set_compression(fname);
 
-                if (read_batch) { /* dw */
-                   /* read checksums originally computed on sender side */
-                   read_batch_csum_info(i, s, &checksums_match);
-                   if (checksums_match) {
-                       read_batch_delta_file( (char *) &j, sizeof(int) );
-                       if (j != i) {    /* if flist index entries don't match*/ 
-                          rprintf(FINFO,"index mismatch in send_files\n");
-                          rprintf(FINFO,"read index = %d flist ndx = %d\n",j,i);
-                          close_batch_delta_file();
-                          close_batch_csums_file();
-                          exit_cleanup(1);
-                       }
-                       else {
-                         write_int(f_out,j);
-                         write_int(f_out,s->count);
-                         write_int(f_out,s->n);
-                         write_int(f_out,s->remainder);
-                         done=0;
-                         while (!done) {
-                            read_batch_delta_file( (char *) &buff_len, sizeof(int) );
-                            write_int(f_out,buff_len);
-                            if (buff_len == 0) {
-                               done = 1;
-                            }
-                            else {
-                               if (buff_len > 0) {
-                                  read_batch_delta_file(buff, buff_len);
-                                  write_buf(f_out,buff,buff_len);
-                               }
-                            }
-                         }  /* end while  */
-                         read_batch_delta_file( buff, MD4_SUM_LENGTH);
-                         write_buf(f_out, buff, MD4_SUM_LENGTH);
-
-                       }  /* j=i */
-                   } else {  /* not checksum match */
-                      rprintf (FINFO,"readbatch & checksums don't match\n");
-                      rprintf (FINFO,"filename=%s is being skipped\n",
-                              fname);
-                      continue;
-                   }
-                } else  {
-                   match_sums(f_out,s,buf,st.st_size);
-                   log_send(file, &initial_stats);
-                }
-
-               if (!read_batch) { /* dw */
-                   if (buf) unmap_file(buf);
-                   close(fd);
+               match_sums(f_xfer, s, mbuf, st.st_size);
+               if (do_progress)
+                       end_progress(st.st_size);
+
+               log_item(log_code, file, &initial_stats, iflags, NULL);
+
+               if (mbuf) {
+                       j = unmap_file(mbuf);
+                       if (j) {
+                               io_error |= IOERR_GENERAL;
+                               rsyserr(FERROR, j,
+                                       "read errors mapping %s",
+                                       full_fname(fname));
+                       }
                }
-         
+               close(fd);
+
                free_sums(s);
-         
+
                if (verbose > 2)
-                       rprintf(FINFO,"sender finished %s\n",fname);
+                       rprintf(FINFO, "sender finished %s%s%s\n", path,slash,fname);
+
+               /* Flag that we actually sent this entry. */
+               file->flags |= FLAG_FILE_SENT;
        }
+       if (make_backups < 0)
+               make_backups = -make_backups;
 
        if (verbose > 2)
-               rprintf(FINFO,"send files finished\n");
+               rprintf(FINFO, "send files finished\n");
 
        match_report();
 
-       write_int(f_out,-1);
-       if (write_batch || read_batch) { /* dw */
-           close_batch_csums_file();
-           close_batch_delta_file();
-       }
-
+       write_ndx(f_out, NDX_DONE);
 }
-
-
-
-
-