Add --compare-dest option which enables specifying an additional destination

[rsync/rsync.git] / receiver.c

diff --git a/receiver.c b/receiver.c
index c565a6f..204933f 100644 (file)
--- a/receiver.c
+++ b/receiver.c
@@ -32,6 +32,7 @@ extern int preserve_hard_links;
 extern int cvs_exclude;
 extern int io_error;
 extern char *tmpdir;
+extern char *compare_dest;
 
 
 static struct delete_list {
@@ -284,6 +285,8 @@ int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
        STRUCT_STAT st;
        char *fname;
        char fnametmp[MAXPATHLEN];
+       char *fnamecmp;
+       char fnamecmpbuf[MAXPATHLEN];
        struct map_struct *buf;
        int i;
        struct file_struct *file;
@@ -338,18 +341,28 @@ int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
                if (verbose > 2)
                        rprintf(FINFO,"recv_files(%s)\n",fname);
 
+               fnamecmp = fname;
+
                /* open the file */  
-               fd1 = open(fname,O_RDONLY);
+               fd1 = open(fnamecmp,O_RDONLY);
+
+               if ((fd1 == -1) && (compare_dest != NULL)) {
+                       /* try the file at compare_dest instead */
+                       slprintf(fnamecmpbuf,MAXPATHLEN-1,"%s/%s",
+                                               compare_dest,fname);
+                       fnamecmp = fnamecmpbuf;
+                       fd1 = open(fnamecmp,O_RDONLY);
+               }
 
                if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
-                       rprintf(FERROR,"fstat %s : %s\n",fname,strerror(errno));
+                       rprintf(FERROR,"fstat %s : %s\n",fnamecmp,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);
+                       rprintf(FERROR,"%s : not a regular file (recv_files)\n",fnamecmp);
                        receive_data(f_in,NULL,-1,NULL,file->length);
                        close(fd1);
                        continue;
@@ -358,7 +371,7 @@ int recv_files(int f_in,struct file_list *flist,char *local_name,int f_gen)
                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);
+                               rprintf(FINFO,"recv mapped %s of size %d\n",fnamecmp,(int)st.st_size);
                } else {
                        buf = NULL;
                }