+/*
+ 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.
+*/
+
+#include "rsync.h"
+
+extern int verbose;
+extern int recurse;
+extern int delete_mode;
+extern int remote_version;
+extern int csum_length;
+extern struct stats stats;
+extern int dry_run;
+extern int am_server;
+extern int relative_paths;
+extern int preserve_hard_links;
+extern int cvs_exclude;
+extern int io_error;
+extern char *tmpdir;
+
+
+static struct delete_list {
+ dev_t dev;
+ INO_T inode;
+} *delete_list;
+static int dlist_len, dlist_alloc_len;
+
+
+/* yuck! This function wouldn't have been necessary if I had the sorting
+ algorithm right. Unfortunately fixing the sorting algorithm would introduce
+ a backward incompatibility as file list indexes are sent over the link.
+*/
+static int delete_already_done(struct file_list *flist,int j)
+{
+ int i;
+ STRUCT_STAT st;
+
+ if (link_stat(f_name(flist->files[j]), &st)) return 1;
+
+ for (i=0;i<dlist_len;i++) {
+ if (st.st_ino == delete_list[i].inode &&
+ st.st_dev == delete_list[i].dev)
+ return 1;
+ }
+
+ return 0;
+}
+
+static void add_delete_entry(struct file_struct *file)
+{
+ if (dlist_len == dlist_alloc_len) {
+ dlist_alloc_len += 1024;
+ delete_list = (struct delete_list *)Realloc(delete_list, sizeof(delete_list[0])*dlist_alloc_len);
+ if (!delete_list) out_of_memory("add_delete_entry");
+ }
+
+ delete_list[dlist_len].dev = file->dev;
+ delete_list[dlist_len].inode = file->inode;
+ dlist_len++;
+
+ if (verbose > 3)
+ rprintf(FINFO,"added %s to delete list\n", f_name(file));
+}
+
+static void delete_one(struct file_struct *f)
+{
+ if (!S_ISDIR(f->mode)) {
+ if (do_unlink(f_name(f)) != 0) {
+ rprintf(FERROR,"unlink %s : %s\n",f_name(f),strerror(errno));
+ } else if (verbose) {
+ rprintf(FINFO,"deleting %s\n",f_name(f));
+ }
+ } else {
+ if (do_rmdir(f_name(f)) != 0) {
+ if (errno != ENOTEMPTY && errno != EEXIST)
+ rprintf(FERROR,"rmdir %s : %s\n",f_name(f),strerror(errno));
+ } else if (verbose) {
+ rprintf(FINFO,"deleting directory %s\n",f_name(f));
+ }
+ }
+}
+
+
+
+
+/* this deletes any files on the receiving side that are not present
+ on the sending side. For version 1.6.4 I have changed the behaviour
+ to match more closely what most people seem to expect of this option */
+static void delete_files(struct file_list *flist)
+{
+ struct file_list *local_file_list;
+ int i, j;
+ char *name;
+
+ if (cvs_exclude)
+ add_cvs_excludes();
+
+ if (io_error) {
+ rprintf(FINFO,"IO error encountered - skipping file deletion\n");
+ return;
+ }
+
+ for (j=0;j<flist->count;j++) {
+ if (!S_ISDIR(flist->files[j]->mode) ||
+ !(flist->files[j]->flags & FLAG_DELETE)) continue;
+
+ if (remote_version < 19 &&
+ delete_already_done(flist, j)) continue;
+
+ name = strdup(f_name(flist->files[j]));
+
+ if (!(local_file_list = send_file_list(-1,1,&name))) {
+ free(name);
+ continue;
+ }
+
+ if (verbose > 1)
+ rprintf(FINFO,"deleting in %s\n", name);
+
+ for (i=local_file_list->count-1;i>=0;i--) {
+ if (!local_file_list->files[i]->basename) continue;
+ if (remote_version < 19 &&
+ S_ISDIR(local_file_list->files[i]->mode))
+ add_delete_entry(local_file_list->files[i]);
+ if (-1 == flist_find(flist,local_file_list->files[i])) {
+ delete_one(local_file_list->files[i]);
+ }
+ }
+ flist_free(local_file_list);
+ free(name);
+ }
+}
+
+
+static int get_tmpname(char *fnametmp, char *fname)
+{
+ char *f;
+
+ /* open tmp file */
+ if (tmpdir) {
+ f = strrchr(fname,'/');
+ if (f == NULL)
+ f = fname;
+ else
+ f++;
+ if (strlen(tmpdir)+strlen(f)+10 > MAXPATHLEN) {
+ rprintf(FERROR,"filename too long\n");
+ return 0;
+ }
+ slprintf(fnametmp,MAXPATHLEN-1, "%s/.%s.XXXXXX",tmpdir,f);
+ return 1;
+ }
+
+ f = strrchr(fname,'/');
+
+ if (strlen(fname)+9 > MAXPATHLEN) {
+ rprintf(FERROR,"filename too long\n");
+ return 0;
+ }
+
+ if (f) {
+ *f = 0;
+ slprintf(fnametmp,MAXPATHLEN-1,"%s/.%s.XXXXXX",
+ fname,f+1);
+ *f = '/';
+ } else {
+ slprintf(fnametmp,MAXPATHLEN-1,".%s.XXXXXX",fname);
+ }
+
+ return 1;
+}
+
+
+static int receive_data(int f_in,struct map_struct *buf,int fd,char *fname,
+ OFF_T total_size)
+{
+ int i,n,remainder,len,count;
+ OFF_T offset = 0;
+ OFF_T offset2;
+ char *data;
+ static char file_sum1[MD4_SUM_LENGTH];
+ static char file_sum2[MD4_SUM_LENGTH];
+ char *map=NULL;
+
+ count = read_int(f_in);
+ n = read_int(f_in);
+ remainder = read_int(f_in);
+
+ sum_init();
+
+ for (i=recv_token(f_in,&data); i != 0; i=recv_token(f_in,&data)) {
+
+ show_progress(offset, total_size);
+
+ if (i > 0) {
+ extern int cleanup_got_literal;
+
+ if (verbose > 3) {
+ rprintf(FINFO,"data recv %d at %d\n",
+ i,(int)offset);
+ }
+
+ stats.literal_data += i;
+ cleanup_got_literal = 1;
+
+ sum_update(data,i);
+
+ if (fd != -1 && write_file(fd,data,i) != i) {
+ rprintf(FERROR,"write failed on %s : %s\n",fname,strerror(errno));
+ exit_cleanup(1);
+ }
+ offset += i;
+ continue;
+ }
+
+ i = -(i+1);
+ offset2 = i*n;
+ len = n;
+ if (i == count-1 && remainder != 0)
+ len = remainder;
+
+ stats.matched_data += len;
+
+ if (verbose > 3)
+ rprintf(FINFO,"chunk[%d] of size %d at %d offset=%d\n",
+ i,len,(int)offset2,(int)offset);
+
+ map = map_ptr(buf,offset2,len);
+
+ see_token(map, len);
+ sum_update(map,len);
+
+ if (fd != -1 && write_file(fd,map,len) != len) {
+ rprintf(FERROR,"write failed on %s : %s\n",
+ fname,strerror(errno));
+ exit_cleanup(1);
+ }
+ offset += len;
+ }
+
+ end_progress();
+
+ if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
+ rprintf(FERROR,"write failed on %s : %s\n",
+ fname,strerror(errno));
+ exit_cleanup(1);
+ }
+
+ sum_end(file_sum1);
+
+ if (remote_version >= 14) {
+ read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
+ if (verbose > 2) {
+ rprintf(FINFO,"got file_sum\n");
+ }
+ if (fd != -1 &&
+ memcmp(file_sum1,file_sum2,MD4_SUM_LENGTH) != 0) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+
+
+int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
+{
+ int fd1,fd2;
+ STRUCT_STAT st;
+ char *fname;
+ char fnametmp[MAXPATHLEN];
+ struct map_struct *buf;
+ int i;
+ struct file_struct *file;
+ int phase=0;
+ int recv_ok;
+
+ if (verbose > 2) {
+ rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
+ }
+
+ if (recurse && delete_mode && !local_name && flist->count>0) {
+ delete_files(flist);
+ }
+
+ while (1) {
+ cleanup_disable();
+
+ i = read_int(f_in);
+ if (i == -1) {
+ if (phase==0 && remote_version >= 13) {
+ phase++;
+ csum_length = SUM_LENGTH;
+ if (verbose > 2)
+ rprintf(FINFO,"recv_files phase=%d\n",phase);
+ write_int(f_gen,-1);
+ continue;
+ }
+ break;
+ }
+
+ if (i < 0 || i >= flist->count) {
+ rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
+ i, flist->count);
+ exit_cleanup(1);
+ }
+
+ file = flist->files[i];
+ fname = f_name(file);
+
+ stats.num_transferred_files++;
+ stats.total_transferred_size += file->length;
+
+ if (local_name)
+ fname = local_name;
+
+ if (dry_run) {
+ if (!am_server && verbose)
+ rprintf(FINFO,"%s\n",fname);
+ continue;
+ }
+
+ if (verbose > 2)
+ rprintf(FINFO,"recv_files(%s)\n",fname);
+
+ /* open the file */
+ fd1 = open(fname,O_RDONLY);
+
+ if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
+ rprintf(FERROR,"fstat %s : %s\n",fname,strerror(errno));
+ receive_data(f_in,NULL,-1,NULL,file->length);
+ close(fd1);
+ continue;
+ }
+
+ if (fd1 != -1 && !S_ISREG(st.st_mode)) {
+ rprintf(FERROR,"%s : not a regular file (recv_files)\n",fname);
+ receive_data(f_in,NULL,-1,NULL,file->length);
+ close(fd1);
+ continue;
+ }
+
+ if (fd1 != -1 && st.st_size > 0) {
+ buf = map_file(fd1,st.st_size);
+ if (verbose > 2)
+ rprintf(FINFO,"recv mapped %s of size %d\n",fname,(int)st.st_size);
+ } else {
+ buf = NULL;
+ }
+
+ if (!get_tmpname(fnametmp,fname)) {
+ if (buf) unmap_file(buf);
+ if (fd1 != -1) close(fd1);
+ continue;
+ }
+
+ if (NULL == do_mktemp(fnametmp)) {
+ rprintf(FERROR,"mktemp %s failed\n",fnametmp);
+ receive_data(f_in,buf,-1,NULL,file->length);
+ if (buf) unmap_file(buf);
+ if (fd1 != -1) close(fd1);
+ continue;
+ }
+
+ /* we initially set the perms without the
+ setuid/setgid bits to ensure that there is no race
+ condition. They are then correctly updated after
+ the lchown. Thanks to snabb@epipe.fi for pointing
+ this out */
+ fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
+ file->mode & ACCESSPERMS);
+
+ if (fd2 == -1 && relative_paths && errno == ENOENT &&
+ create_directory_path(fnametmp) == 0) {
+ fd2 = do_open(fnametmp,O_WRONLY|O_CREAT|O_EXCL,
+ file->mode & ACCESSPERMS);
+ }
+ if (fd2 == -1) {
+ rprintf(FERROR,"open %s : %s\n",fnametmp,strerror(errno));
+ receive_data(f_in,buf,-1,NULL,file->length);
+ if (buf) unmap_file(buf);
+ if (fd1 != -1) close(fd1);
+ continue;
+ }
+
+ cleanup_set(fnametmp, fname, file);
+
+ if (!am_server && verbose)
+ rprintf(FINFO,"%s\n",fname);
+
+ /* recv file data */
+ recv_ok = receive_data(f_in,buf,fd2,fname,file->length);
+
+ if (buf) unmap_file(buf);
+ if (fd1 != -1) {
+ close(fd1);
+ }
+ close(fd2);
+
+ if (verbose > 2)
+ rprintf(FINFO,"renaming %s to %s\n",fnametmp,fname);
+
+ finish_transfer(fname, fnametmp, file);
+
+ cleanup_disable();
+
+ if (!recv_ok) {
+ if (csum_length == SUM_LENGTH) {
+ rprintf(FERROR,"ERROR: file corruption in %s. File changed during transfer?\n",
+ fname);
+ } else {
+ if (verbose > 1)
+ rprintf(FINFO,"redoing %s(%d)\n",fname,i);
+ write_int(f_gen,i);
+ }
+ }
+ }
+
+ if (preserve_hard_links)
+ do_hard_links(flist);
+
+ /* now we need to fix any directory permissions that were
+ modified during the transfer */
+ for (i = 0; i < flist->count; i++) {
+ file = flist->files[i];
+ if (!file->basename || !S_ISDIR(file->mode)) continue;
+ recv_generator(f_name(file),flist,i,-1);
+ }
+
+ if (verbose > 2)
+ rprintf(FINFO,"recv_files finished\n");
+
+ return 0;
+}
+
Matt McCutchen's Web Site / rsync / rsync.git / commitdiff