configuration parsing and loading code for rsyncd. This is based
[rsync/rsync.git] / flist.c
diff --git a/flist.c b/flist.c
index 0aa1eea..494b108 100644 (file)
--- a/flist.c
+++ b/flist.c
@@ -44,19 +44,20 @@ extern int preserve_times;
 extern int relative_paths;
 extern int copy_links;
 extern int remote_version;
+extern int io_error;
 
 static char **local_exclude_list;
 
-int link_stat(const char *Path, struct stat *Buffer) 
+int link_stat(const char *Path, STRUCT_STAT *Buffer) 
 {
 #if SUPPORT_LINKS
     if (copy_links) {
-       return stat(Path, Buffer);
+       return do_stat(Path, Buffer);
     } else {
-       return lstat(Path, Buffer);
+       return do_lstat(Path, Buffer);
     }
 #else
-    return stat(Path, Buffer);
+    return do_stat(Path, Buffer);
 #endif
 }
 
@@ -64,11 +65,11 @@ int link_stat(const char *Path, struct stat *Buffer)
   This function is used to check if a file should be included/excluded
   from the list of files based on its name and type etc
  */
-static int match_file_name(char *fname,struct stat *st)
+static int match_file_name(char *fname,STRUCT_STAT *st)
 {
   if (check_exclude(fname,local_exclude_list)) {
     if (verbose > 2)
-      fprintf(FERROR,"excluding file %s\n",fname);
+      rprintf(FINFO,"excluding file %s\n",fname);
     return 0;
   }
   return 1;
@@ -79,7 +80,7 @@ static dev_t filesystem_dev;
 
 static void set_filesystem(char *fname)
 {
-  struct stat st;
+  STRUCT_STAT st;
   if (link_stat(fname,&st) != 0) return;
   filesystem_dev = st.st_dev;
 }
@@ -133,7 +134,7 @@ static void clean_fname(char *name)
 
 
 
-void send_file_entry(struct file_struct *file,int f)
+void send_file_entry(struct file_struct *file,int f,unsigned base_flags)
 {
   unsigned char flags;
   static time_t last_time;
@@ -154,7 +155,7 @@ void send_file_entry(struct file_struct *file,int f)
 
   fname = f_name(file);
 
-  flags = FILE_VALID;
+  flags = base_flags;
 
   if (file->mode == last_mode) flags |= SAME_MODE;
   if (file->rdev == last_rdev) flags |= SAME_RDEV;
@@ -208,7 +209,7 @@ void send_file_entry(struct file_struct *file,int f)
 #endif
 
   if (always_checksum) {
-    write_buf(f,file->sum,csum_length);
+         write_buf(f,file->sum,csum_length);
   }       
 
   last_mode = file->mode;
@@ -223,8 +224,8 @@ void send_file_entry(struct file_struct *file,int f)
 
 
 
-void receive_file_entry(struct file_struct **fptr,
-                       unsigned char flags,int f)
+static void receive_file_entry(struct file_struct **fptr,
+                              unsigned flags,int f)
 {
   static time_t last_time;
   static mode_t last_mode;
@@ -250,8 +251,10 @@ void receive_file_entry(struct file_struct **fptr,
   bzero((char *)file,sizeof(*file));
   (*fptr) = file;
 
+  if (l2 >= MAXPATHLEN-l1) overflow("receive_file_entry");
+
   strncpy(thisname,lastname,l1);
-  read_buf(f,&thisname[l1],l2);
+  read_sbuf(f,&thisname[l1],l2);
   thisname[l1+l2] = 0;
 
   strncpy(lastname,thisname,MAXPATHLEN-1);
@@ -277,6 +280,7 @@ void receive_file_entry(struct file_struct **fptr,
   if (!file->basename) out_of_memory("receive_file_entry 1");
 
 
+  file->flags = flags;
   file->length = read_longint(f);
   file->modtime = (flags & SAME_TIME) ? last_time : (time_t)read_int(f);
   file->mode = (flags & SAME_MODE) ? last_mode : (mode_t)read_int(f);
@@ -291,8 +295,7 @@ void receive_file_entry(struct file_struct **fptr,
     int l = read_int(f);
     file->link = (char *)malloc(l+1);
     if (!file->link) out_of_memory("receive_file_entry 2");
-    read_buf(f,file->link,l);
-    file->link[l] = 0;
+    read_sbuf(f,file->link,l);
   }
 
 #if SUPPORT_HARD_LINKS
@@ -316,11 +319,34 @@ void receive_file_entry(struct file_struct **fptr,
 }
 
 
+/* determine if a file in a different filesstem should be skipped
+   when one_file_system is set. We bascally only want to include
+   the mount points - but they can be hard to find! */
+static int skip_filesystem(char *fname, STRUCT_STAT *st)
+{
+       STRUCT_STAT st2;
+       char *p = strrchr(fname, '/');
+
+       /* skip all but directories */
+       if (!S_ISDIR(st->st_mode)) return 1;
+
+       /* if its not a subdirectory then allow */
+       if (!p) return 0;
+
+       *p = 0;
+       if (link_stat(fname, &st2)) {
+               *p = '/';
+               return 0;
+       }
+       *p = '/';
+       
+       return (st2.st_dev != filesystem_dev);
+}
 
 static struct file_struct *make_file(char *fname)
 {
        struct file_struct *file;
-       struct stat st;
+       STRUCT_STAT st;
        char sum[SUM_LENGTH];
        char *p;
        char cleaned_name[MAXPATHLEN];
@@ -333,24 +359,27 @@ static struct file_struct *make_file(char *fname)
        bzero(sum,SUM_LENGTH);
 
        if (link_stat(fname,&st) != 0) {
-               fprintf(FERROR,"%s: %s\n",
+               io_error = 1;
+               rprintf(FERROR,"%s: %s\n",
                        fname,strerror(errno));
                return NULL;
        }
 
        if (S_ISDIR(st.st_mode) && !recurse) {
-               fprintf(FERROR,"skipping directory %s\n",fname);
+               rprintf(FINFO,"skipping directory %s\n",fname);
                return NULL;
        }
        
-       if (one_file_system && st.st_dev != filesystem_dev)
-               return NULL;
+       if (one_file_system && st.st_dev != filesystem_dev) {
+               if (skip_filesystem(fname, &st))
+                       return NULL;
+       }
        
        if (!match_file_name(fname,&st))
                return NULL;
        
        if (verbose > 2)
-               fprintf(FERROR,"make_file(%s)\n",fname);
+               rprintf(FINFO,"make_file(%s)\n",fname);
        
        file = (struct file_struct *)malloc(sizeof(*file));
        if (!file) out_of_memory("make_file");
@@ -388,7 +417,8 @@ static struct file_struct *make_file(char *fname)
                int l;
                char lnk[MAXPATHLEN];
                if ((l=readlink(fname,lnk,MAXPATHLEN-1)) == -1) {
-                       fprintf(FERROR,"readlink %s : %s\n",
+                       io_error=1;
+                       rprintf(FERROR,"readlink %s : %s\n",
                                fname,strerror(errno));
                        return NULL;
                }
@@ -397,10 +427,17 @@ static struct file_struct *make_file(char *fname)
        }
 #endif
 
-       if (always_checksum && S_ISREG(st.st_mode)) {
+       if (always_checksum) {
                file->sum = (char *)malloc(MD4_SUM_LENGTH);
                if (!file->sum) out_of_memory("md4 sum");
-               file_checksum(fname,file->sum,st.st_size);
+               /* drat. we have to provide a null checksum for non-regular
+                  files in order to be compatible with earlier versions
+                  of rsync */
+               if (S_ISREG(st.st_mode)) {
+                       file_checksum(fname,file->sum,st.st_size);
+               } else {
+                       memset(file->sum, 0, MD4_SUM_LENGTH);
+               }
        }       
 
        if (flist_dir) {
@@ -424,7 +461,7 @@ static struct file_struct *make_file(char *fname)
 
 
 static void send_file_name(int f,struct file_list *flist,char *fname,
-                          int recursive)
+                          int recursive, unsigned base_flags)
 {
   struct file_struct *file;
 
@@ -446,7 +483,7 @@ static void send_file_name(int f,struct file_list *flist,char *fname,
 
   if (strcmp(file->basename,"")) {
     flist->files[flist->count++] = file;
-    send_file_entry(file,f);
+    send_file_entry(file,f,base_flags);
   }
 
   if (S_ISDIR(file->mode) && recursive) {
@@ -469,7 +506,8 @@ static void send_directory(int f,struct file_list *flist,char *dir)
 
        d = opendir(dir);
        if (!d) {
-               fprintf(FERROR,"%s: %s\n",
+               io_error = 1;
+               rprintf(FERROR,"%s: %s\n",
                        dir,strerror(errno));
                return;
        }
@@ -479,7 +517,8 @@ static void send_directory(int f,struct file_list *flist,char *dir)
        l = strlen(fname);
        if (fname[l-1] != '/') {
                if (l == MAXPATHLEN-1) {
-                       fprintf(FERROR,"skipping long-named directory %s\n",fname);
+                       io_error = 1;
+                       rprintf(FERROR,"skipping long-named directory %s\n",fname);
                        closedir(d);
                        return;
                }
@@ -493,16 +532,18 @@ static void send_directory(int f,struct file_list *flist,char *dir)
                        strcpy(p,".cvsignore");
                        local_exclude_list = make_exclude_list(fname,NULL,0);
                } else {
-                       fprintf(FERROR,"cannot cvs-exclude in long-named directory %s\n",fname);
+                       io_error = 1;
+                       rprintf(FINFO,"cannot cvs-exclude in long-named directory %s\n",fname);
                }
        }  
        
        for (di=readdir(d); di; di=readdir(d)) {
-               if (strcmp(di->d_name,".")==0 ||
-                   strcmp(di->d_name,"..")==0)
+               char *dname = d_name(di);
+               if (strcmp(dname,".")==0 ||
+                   strcmp(dname,"..")==0)
                        continue;
-               strncpy(p,di->d_name,MAXPATHLEN-(l+1));
-               send_file_name(f,flist,fname,recurse);
+               strncpy(p,dname,MAXPATHLEN-(l+1));
+               send_file_name(f,flist,fname,recurse,FLAG_DELETE);
        }
 
        closedir(d);
@@ -513,15 +554,15 @@ static void send_directory(int f,struct file_list *flist,char *dir)
 struct file_list *send_file_list(int f,int argc,char *argv[])
 {
        int i,l;
-       struct stat st;
+       STRUCT_STAT st;
        char *p,*dir;
        char dbuf[MAXPATHLEN];
        char lastpath[MAXPATHLEN]="";
        struct file_list *flist;
 
        if (verbose && recurse && !am_server && f != -1) {
-               fprintf(FINFO,"building file list ... ");
-               fflush(FINFO);
+               rprintf(FINFO,"building file list ... ");
+               rflush(FINFO);
        }
 
        flist = (struct file_list *)malloc(sizeof(flist[0]));
@@ -546,12 +587,13 @@ struct file_list *send_file_list(int f,int argc,char *argv[])
                }
 
                if (link_stat(fname,&st) != 0) {
-                       fprintf(FERROR,"%s : %s\n",fname,strerror(errno));
+                       io_error=1;
+                       rprintf(FERROR,"%s : %s\n",fname,strerror(errno));
                        continue;
                }
 
                if (S_ISDIR(st.st_mode) && !recurse) {
-                       fprintf(FERROR,"skipping directory %s\n",fname);
+                       rprintf(FINFO,"skipping directory %s\n",fname);
                        continue;
                }
 
@@ -576,7 +618,7 @@ struct file_list *send_file_list(int f,int argc,char *argv[])
                                *p = '/';
                                for (p=fname+1; (p=strchr(p,'/')); p++) {
                                        *p = 0;
-                                       send_file_name(f, flist, fname, 0);
+                                       send_file_name(f, flist, fname, 0, 0);
                                        *p = '/';
                                }
                        } else {
@@ -589,21 +631,22 @@ struct file_list *send_file_list(int f,int argc,char *argv[])
                
                if (dir && *dir) {
                        if (getcwd(dbuf,MAXPATHLEN-1) == NULL) {
-                               fprintf(FERROR,"getwd : %s\n",strerror(errno));
+                               rprintf(FERROR,"getwd : %s\n",strerror(errno));
                                exit_cleanup(1);
                        }
                        if (chdir(dir) != 0) {
-                               fprintf(FERROR,"chdir %s : %s\n",
+                               io_error=1;
+                               rprintf(FERROR,"chdir %s : %s\n",
                                        dir,strerror(errno));
                                continue;
                        }
                        flist_dir = dir;
                        if (one_file_system)
                                set_filesystem(fname);
-                       send_file_name(f,flist,fname,recurse);
+                       send_file_name(f,flist,fname,recurse,FLAG_DELETE);
                        flist_dir = NULL;
                        if (chdir(dbuf) != 0) {
-                               fprintf(FERROR,"chdir %s : %s\n",
+                               rprintf(FERROR,"chdir %s : %s\n",
                                        dbuf,strerror(errno));
                                exit_cleanup(1);
                        }
@@ -612,16 +655,16 @@ struct file_list *send_file_list(int f,int argc,char *argv[])
                
                if (one_file_system)
                        set_filesystem(fname);
-               send_file_name(f,flist,fname,recurse);
+               send_file_name(f,flist,fname,recurse,FLAG_DELETE);
        }
 
        if (f != -1) {
-               send_file_entry(NULL,f);
+               send_file_entry(NULL,f,0);
                write_flush(f);
        }
 
        if (verbose && recurse && !am_server && f != -1)
-               fprintf(FINFO,"done\n");
+               rprintf(FINFO,"done\n");
        
        clean_flist(flist);
        
@@ -631,6 +674,14 @@ struct file_list *send_file_list(int f,int argc,char *argv[])
                send_uid_list(f);
        }
 
+       /* if protocol version is >= 17 then send the io_error flag */
+       if (f != -1 && remote_version >= 17) {
+               write_int(f, io_error);
+       }
+
+       if (verbose > 2)
+               rprintf(FINFO,"send_file_list done\n");
+
        return flist;
 }
 
@@ -641,8 +692,8 @@ struct file_list *recv_file_list(int f)
   unsigned char flags;
 
   if (verbose && recurse && !am_server) {
-    fprintf(FINFO,"receiving file list ... ");
-    fflush(FINFO);
+    rprintf(FINFO,"receiving file list ... ");
+    rflush(FINFO);
   }
 
   flist = (struct file_list *)malloc(sizeof(flist[0]));
@@ -680,17 +731,17 @@ struct file_list *recv_file_list(int f)
     flist->count++;
 
     if (verbose > 2)
-      fprintf(FERROR,"recv_file_name(%s)\n",f_name(flist->files[i]));
+      rprintf(FINFO,"recv_file_name(%s)\n",f_name(flist->files[i]));
   }
 
 
   if (verbose > 2)
-    fprintf(FERROR,"received %d names\n",flist->count);
+    rprintf(FINFO,"received %d names\n",flist->count);
 
   clean_flist(flist);
 
   if (verbose && recurse && !am_server) {
-    fprintf(FINFO,"done\n");
+    rprintf(FINFO,"done\n");
   }
 
   /* now recv the uid/gid list. This was introduced in protocol version 15 */
@@ -698,6 +749,14 @@ struct file_list *recv_file_list(int f)
          recv_uid_list(f, flist);
   }
 
+  /* if protocol version is >= 17 then recv the io_error flag */
+  if (f != -1 && remote_version >= 17) {
+         io_error |= read_int(f);
+  }
+
+  if (verbose > 2)
+    rprintf(FINFO,"recv_file_list done\n");
+
   return flist;
 
 oom:
@@ -791,7 +850,7 @@ void clean_flist(struct file_list *flist)
                    strcmp(f_name(flist->files[i]),
                           f_name(flist->files[i-1])) == 0) {
                        if (verbose > 1 && !am_server)
-                               fprintf(FERROR,"removing duplicate name %s from file list %d\n",
+                               rprintf(FINFO,"removing duplicate name %s from file list %d\n",
                                        f_name(flist->files[i-1]),i-1);
                        free_file(flist->files[i]);
                }