Use the new names for the transmit-flag defines.
[rsync/rsync.git] / flist.c
diff --git a/flist.c b/flist.c
index 6cdc050..6de758c 100644 (file)
--- a/flist.c
+++ b/flist.c
@@ -37,10 +37,13 @@ extern int verbose;
 extern int do_progress;
 extern int am_server;
 extern int always_checksum;
+extern int module_id;
+extern int ignore_errors;
 
 extern int cvs_exclude;
 
 extern int recurse;
+extern char curr_dir[MAXPATHLEN];
 extern char *files_from;
 extern int filesfrom_fd;
 
@@ -58,7 +61,6 @@ extern int implied_dirs;
 extern int copy_links;
 extern int copy_unsafe_links;
 extern int protocol_version;
-extern int io_error;
 extern int sanitize_paths;
 
 extern int read_batch;
@@ -68,7 +70,10 @@ extern struct exclude_struct **exclude_list;
 extern struct exclude_struct **server_exclude_list;
 extern struct exclude_struct **local_exclude_list;
 
+int io_error;
+
 static struct file_struct null_file;
+static char empty_sum[MD4_SUM_LENGTH];
 
 static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
 
@@ -106,9 +111,8 @@ static void finish_filelist_progress(const struct file_list *flist)
                /* This overwrites the progress line */
                rprintf(FINFO, "%d file%sto consider\n",
                        flist->count, flist->count == 1 ? " " : "s ");
-       } else {
+       } else
                rprintf(FINFO, "done\n");
-       }
 }
 
 void show_flist_stats(void)
@@ -185,7 +189,7 @@ static void list_file_entry(struct file_struct *f)
                rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
                        perms,
                        (double) f->length, timestring(f->modtime),
-                       f_name(f), f->link);
+                       f_name(f), f->u.link);
        } else {
                rprintf(FINFO, "%s %11.0f %s %s\n",
                        perms,
@@ -209,18 +213,15 @@ static void list_file_entry(struct file_struct *f)
  * @post @p buffer contains information about the link or the
  * referrent as appropriate, if they exist.
  **/
-int readlink_stat(const char *path, STRUCT_STAT * buffer, char *linkbuf)
+int readlink_stat(const char *path, STRUCT_STAT *buffer, char *linkbuf)
 {
 #if SUPPORT_LINKS
-       if (copy_links) {
+       if (copy_links)
                return do_stat(path, buffer);
-       }
-       if (do_lstat(path, buffer) == -1) {
+       if (do_lstat(path, buffer) == -1)
                return -1;
-       }
        if (S_ISLNK(buffer->st_mode)) {
-               int l;
-               l = readlink((char *) path, linkbuf, MAXPATHLEN - 1);
+               int l = readlink((char *) path, linkbuf, MAXPATHLEN - 1);
                if (l == -1)
                        return -1;
                linkbuf[l] = 0;
@@ -241,11 +242,9 @@ int readlink_stat(const char *path, STRUCT_STAT * buffer, char *linkbuf)
 int link_stat(const char *path, STRUCT_STAT * buffer)
 {
 #if SUPPORT_LINKS
-       if (copy_links) {
+       if (copy_links)
                return do_stat(path, buffer);
-       } else {
-               return do_lstat(path, buffer);
-       }
+       return do_lstat(path, buffer);
 #else
        return do_stat(path, buffer);
 #endif
@@ -300,17 +299,15 @@ static void set_filesystem(char *fname)
 
 static int to_wire_mode(mode_t mode)
 {
-       if (S_ISLNK(mode) && (_S_IFLNK != 0120000)) {
+       if (S_ISLNK(mode) && (_S_IFLNK != 0120000))
                return (mode & ~(_S_IFMT)) | 0120000;
-       }
        return (int) mode;
 }
 
 static mode_t from_wire_mode(int mode)
 {
-       if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000)) {
+       if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000))
                return (mode & ~(_S_IFMT)) | _S_IFLNK;
-       }
        return (mode_t) mode;
 }
 
@@ -318,6 +315,7 @@ static mode_t from_wire_mode(int mode)
 static void send_directory(int f, struct file_list *flist, char *dir);
 
 static char *flist_dir;
+static int flist_dir_len;
 
 
 /**
@@ -357,18 +355,17 @@ static void flist_expand(struct file_list *flist)
        }
 }
 
-
-static void send_file_entry(struct file_struct *file, int f,
-                           unsigned base_flags)
+void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
 {
-       unsigned char flags;
-       static time_t last_time;
-       static mode_t last_mode;
-       static DEV64_T last_rdev;
-       static uid_t last_uid;
-       static gid_t last_gid;
+       unsigned short flags;
+       static time_t modtime;
+       static mode_t mode;
+       static DEV64_T rdev;    /* just high bytes in p28 onward */
+       static DEV64_T dev;
+       static uid_t uid;
+       static gid_t gid;
        static char lastname[MAXPATHLEN];
-       char *fname;
+       char *fname, fbuf[MAXPATHLEN];
        int l1, l2;
 
        if (f == -1)
@@ -376,44 +373,88 @@ static void send_file_entry(struct file_struct *file, int f,
 
        if (!file) {
                write_byte(f, 0);
+               modtime = 0, mode = 0;
+               rdev = 0, dev = 0;
+               uid = 0, gid = 0;
+               *lastname = '\0';
                return;
        }
 
        io_write_phase = "send_file_entry";
 
-       fname = f_name(file);
+       fname = f_name_to(file, fbuf);
 
        flags = base_flags;
 
-       if (file->mode == last_mode)
+       if (file->mode == mode)
                flags |= SAME_MODE;
-       if (file->rdev == last_rdev)
-               flags |= SAME_RDEV;
-       if (file->uid == last_uid)
+       else
+               mode = file->mode;
+       if (preserve_devices) {
+               if (protocol_version < 28) {
+                       if (IS_DEVICE(mode)) {
+                               if (file->u.rdev == rdev) {
+                                       /* Set both flags so that the test when
+                                        * writing the data is simpler. */
+                                       flags |= SAME_RDEV_pre28|SAME_HIGH_RDEV;
+                               } else
+                                       rdev = file->u.rdev;
+                       } else
+                               rdev = 0;
+               } else if (IS_DEVICE(mode)) {
+                       if ((file->u.rdev & ~0xFF) == rdev)
+                               flags |= SAME_HIGH_RDEV;
+                       else
+                               rdev = file->u.rdev & ~0xFF;
+               }
+       }
+       if (file->uid == uid)
                flags |= SAME_UID;
-       if (file->gid == last_gid)
+       else
+               uid = file->uid;
+       if (file->gid == gid)
                flags |= SAME_GID;
-       if (file->modtime == last_time)
+       else
+               gid = file->gid;
+       if (file->modtime == modtime)
                flags |= SAME_TIME;
+       else
+               modtime = file->modtime;
+       if (file->link_u.idev) {
+               if (file->F_DEV == dev) {
+                       if (protocol_version >= 28)
+                               flags |= SAME_DEV;
+               } else
+                       dev = file->F_DEV;
+               flags |= HAS_INODE_DATA;
+       }
 
        for (l1 = 0;
             lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
             l1++) {}
-       l2 = strlen(fname) - l1;
+       l2 = strlen(fname+l1);
 
        if (l1 > 0)
                flags |= SAME_NAME;
        if (l2 > 255)
                flags |= LONG_NAME;
 
-       /* we must make sure we don't send a zero flags byte or the other
-          end will terminate the flist transfer */
-       if (flags == 0 && !S_ISDIR(file->mode))
-               flags |= FLAG_DELETE;
-       if (flags == 0)
-               flags |= LONG_NAME;
-
-       write_byte(f, flags);
+       /* We must make sure we don't send a zero flags byte or
+        * the other end will terminate the flist transfer. */
+       if (flags == 0 && !S_ISDIR(mode))
+               flags |= FLAG_DELETE; /* NOTE: no meaning for non-dir */
+       if (protocol_version >= 28) {
+               if ((flags & 0xFF00) || flags == 0) {
+                       flags |= EXTENDED_FLAGS;
+                       write_byte(f, flags);
+                       write_byte(f, flags >> 8);
+               } else
+                       write_byte(f, flags);
+       } else {
+               if (flags == 0)
+                       flags |= LONG_NAME;
+               write_byte(f, flags);
+       }
        if (flags & SAME_NAME)
                write_byte(f, l1);
        if (flags & LONG_NAME)
@@ -424,78 +465,92 @@ static void send_file_entry(struct file_struct *file, int f,
 
        write_longint(f, file->length);
        if (!(flags & SAME_TIME))
-               write_int(f, (int) file->modtime);
+               write_int(f, modtime);
        if (!(flags & SAME_MODE))
-               write_int(f, to_wire_mode(file->mode));
+               write_int(f, to_wire_mode(mode));
        if (preserve_uid && !(flags & SAME_UID)) {
-               add_uid(file->uid);
-               write_int(f, (int) file->uid);
+               add_uid(uid);
+               write_int(f, uid);
        }
        if (preserve_gid && !(flags & SAME_GID)) {
-               add_gid(file->gid);
-               write_int(f, (int) file->gid);
+               add_gid(gid);
+               write_int(f, gid);
+       }
+       if (preserve_devices && IS_DEVICE(mode)) {
+               /* If SAME_HIGH_RDEV is off, SAME_RDEV_pre28 is also off.
+                * Also, avoid using "rdev" because it may be incomplete. */
+               if (!(flags & SAME_HIGH_RDEV))
+                       write_int(f, file->u.rdev);
+               else if (protocol_version >= 28)
+                       write_byte(f, file->u.rdev);
        }
-       if (preserve_devices && IS_DEVICE(file->mode)
-           && !(flags & SAME_RDEV))
-               write_int(f, (int) file->rdev);
 
 #if SUPPORT_LINKS
-       if (preserve_links && S_ISLNK(file->mode)) {
-               write_int(f, strlen(file->link));
-               write_buf(f, file->link, strlen(file->link));
+       if (preserve_links && S_ISLNK(mode)) {
+               write_int(f, strlen(file->u.link));
+               write_buf(f, file->u.link, strlen(file->u.link));
        }
 #endif
 
 #if SUPPORT_HARD_LINKS
-       if (preserve_hard_links && S_ISREG(file->mode)) {
+       if (flags & HAS_INODE_DATA) {
                if (protocol_version < 26) {
                        /* 32-bit dev_t and ino_t */
-                       write_int(f, (int) file->dev);
-                       write_int(f, (int) file->inode);
+                       write_int(f, dev);
+                       write_int(f, file->F_INODE);
                } else {
                        /* 64-bit dev_t and ino_t */
-                       write_longint(f, file->dev);
-                       write_longint(f, file->inode);
+                       if (!(flags & SAME_DEV))
+                               write_longint(f, dev);
+                       write_longint(f, file->F_INODE);
                }
        }
 #endif
 
        if (always_checksum) {
-               if (protocol_version < 21) {
-                       write_buf(f, file->sum, 2);
-               } else {
-                       write_buf(f, file->sum, MD4_SUM_LENGTH);
+               char *sum;
+               if (S_ISREG(mode))
+                       sum = file->u.sum;
+               else if (protocol_version < 28) {
+                       /* Prior to 28, we sent a useless set of nulls. */
+                       sum = empty_sum;
+               } else
+                       sum = NULL;
+               if (sum) {
+                       write_buf(f, sum, protocol_version < 21? 2
+                                                       : MD4_SUM_LENGTH);
                }
        }
 
-       last_mode = file->mode;
-       last_rdev = file->rdev;
-       last_uid = file->uid;
-       last_gid = file->gid;
-       last_time = file->modtime;
-
        strlcpy(lastname, fname, MAXPATHLEN);
-       lastname[MAXPATHLEN - 1] = 0;
 
        io_write_phase = "unknown";
 }
 
 
 
-static void receive_file_entry(struct file_struct **fptr,
-                              unsigned flags, int f)
+void receive_file_entry(struct file_struct **fptr, unsigned short flags, int f)
 {
-       static time_t last_time;
-       static mode_t last_mode;
-       static DEV64_T last_rdev;
-       static uid_t last_uid;
-       static gid_t last_gid;
+       static time_t modtime;
+       static mode_t mode;
+       static DEV64_T rdev;    /* just high bytes in p28 onward */
+       static DEV64_T dev;
+       static uid_t uid;
+       static gid_t gid;
        static char lastname[MAXPATHLEN];
        char thisname[MAXPATHLEN];
        unsigned int l1 = 0, l2 = 0;
        char *p;
        struct file_struct *file;
 
+       if (!fptr) {
+               modtime = 0, mode = 0;
+               rdev = 0, dev = 0;
+               uid = 0, gid = 0;
+               *lastname = '\0';
+               return;
+       }
+
        if (flags & SAME_NAME)
                l1 = read_byte(f);
 
@@ -533,9 +588,9 @@ static void receive_file_entry(struct file_struct **fptr,
        if ((p = strrchr(thisname, '/'))) {
                static char *lastdir;
                *p = 0;
-               if (lastdir && strcmp(thisname, lastdir) == 0) {
+               if (lastdir && strcmp(thisname, lastdir) == 0)
                        file->dirname = lastdir;
-               else {
+               else {
                        file->dirname = strdup(thisname);
                        lastdir = file->dirname;
                }
@@ -548,76 +603,99 @@ static void receive_file_entry(struct file_struct **fptr,
        if (!file->basename)
                out_of_memory("receive_file_entry 1");
 
-
-       file->flags = flags;
+       file->flags = flags & LIVE_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 : from_wire_mode(read_int(f));
-       if (preserve_uid)
-               file->uid =
-                   (flags & SAME_UID) ? last_uid : (uid_t) read_int(f);
-       if (preserve_gid)
-               file->gid =
-                   (flags & SAME_GID) ? last_gid : (gid_t) read_int(f);
-       if (preserve_devices && IS_DEVICE(file->mode))
-               file->rdev =
-                   (flags & SAME_RDEV) ? last_rdev : (DEV64_T) read_int(f);
-
-       if (preserve_links && S_ISLNK(file->mode)) {
+       if (!(flags & SAME_TIME))
+               modtime = (time_t)read_int(f);
+       file->modtime = modtime;
+       if (!(flags & SAME_MODE))
+               mode = from_wire_mode(read_int(f));
+       file->mode = mode;
+
+       if (preserve_uid) {
+               if (!(flags & SAME_UID))
+                       uid = (uid_t)read_int(f);
+               file->uid = uid;
+       }
+       if (preserve_gid) {
+               if (!(flags & SAME_GID))
+                       gid = (gid_t)read_int(f);
+               file->gid = gid;
+       }
+       if (preserve_devices) {
+               if (protocol_version < 28) {
+                       if (IS_DEVICE(mode)) {
+                               if (!(flags & SAME_RDEV_pre28))
+                                       rdev = (DEV64_T)read_int(f);
+                               file->u.rdev = rdev;
+                       } else
+                               rdev = 0;
+               } else if (IS_DEVICE(mode)) {
+                       if (!(flags & SAME_HIGH_RDEV)) {
+                               file->u.rdev = (DEV64_T)read_int(f);
+                               rdev = file->u.rdev & ~0xFF;
+                       } else
+                               file->u.rdev = rdev | (DEV64_T)read_byte(f);
+               }
+       }
+
+       if (preserve_links && S_ISLNK(mode)) {
                int l = read_int(f);
                if (l < 0) {
                        rprintf(FERROR, "overflow: l=%d\n", l);
                        overflow("receive_file_entry");
                }
-               file->link = new_array(char, l + 1);
-               if (!file->link)
+               if (!(file->u.link = new_array(char, l + 1)))
                        out_of_memory("receive_file_entry 2");
-               read_sbuf(f, file->link, l);
-               if (sanitize_paths) {
-                       sanitize_path(file->link, file->dirname);
-               }
+               read_sbuf(f, file->u.link, l);
+               if (sanitize_paths)
+                       sanitize_path(file->u.link, file->dirname);
        }
 #if SUPPORT_HARD_LINKS
-       if (preserve_hard_links && S_ISREG(file->mode)) {
+       if (preserve_hard_links && protocol_version < 28 && S_ISREG(mode))
+               flags |= HAS_INODE_DATA;
+       if (flags & HAS_INODE_DATA) {
+               if (!(file->link_u.idev = new(struct idev)))
+                       out_of_memory("file inode data");
                if (protocol_version < 26) {
-                       file->dev = read_int(f);
-                       file->inode = read_int(f);
+                       dev = read_int(f);
+                       file->F_INODE = read_int(f);
                } else {
-                       file->dev = read_longint(f);
-                       file->inode = read_longint(f);
+                       if (!(flags & SAME_DEV))
+                               dev = read_longint(f);
+                       file->F_INODE = read_longint(f);
                }
+               file->F_DEV = dev;
        }
 #endif
 
        if (always_checksum) {
-               file->sum = new_array(char, MD4_SUM_LENGTH);
-               if (!file->sum)
-                       out_of_memory("md4 sum");
-               if (protocol_version < 21) {
-                       read_buf(f, file->sum, 2);
-               } else {
-                       read_buf(f, file->sum, MD4_SUM_LENGTH);
+               char *sum;
+               if (S_ISREG(mode)) {
+                       sum = file->u.sum = new_array(char, MD4_SUM_LENGTH);
+                       if (!sum)
+                               out_of_memory("md4 sum");
+               } else if (protocol_version < 28) {
+                       /* Prior to 28, we get a useless set of nulls. */
+                       sum = empty_sum;
+               } else
+                       sum = NULL;
+               if (sum) {
+                       read_buf(f, sum, protocol_version < 21? 2
+                                               : MD4_SUM_LENGTH);
                }
        }
 
-       last_mode = file->mode;
-       last_rdev = file->rdev;
-       last_uid = file->uid;
-       last_gid = file->gid;
-       last_time = file->modtime;
-
        if (!preserve_perms) {
                extern int orig_umask;
                /* set an appropriate set of permissions based on original
-                  permissions and umask. This emulates what GNU cp does */
+                * permissions and umask. This emulates what GNU cp does */
                file->mode &= ~orig_umask;
        }
 }
 
 
-/* determine if a file in a different filesstem should be skipped
+/* determine if a file in a different filesystem 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)
@@ -671,14 +749,15 @@ struct file_struct *make_file(char *fname, struct string_area **ap,
        char *p;
        char cleaned_name[MAXPATHLEN];
        char linkbuf[MAXPATHLEN];
-       extern int module_id;
 
-       strlcpy(cleaned_name, fname, MAXPATHLEN);
-       cleaned_name[MAXPATHLEN - 1] = 0;
+       if (strlcpy(cleaned_name, fname, sizeof cleaned_name)
+           >= sizeof cleaned_name - flist_dir_len) {
+               rprintf(FINFO, "skipping overly long name: %s\n", fname);
+               return NULL;
+       }
        clean_fname(cleaned_name);
-       if (sanitize_paths) {
+       if (sanitize_paths)
                sanitize_path(cleaned_name, NULL);
-       }
        fname = cleaned_name;
 
        memset(sum, 0, SUM_LENGTH);
@@ -694,7 +773,7 @@ struct file_struct *make_file(char *fname, struct string_area **ap,
                                return NULL;
                        }
                }
-               io_error = 1;
+               io_error |= IOERR_GENERAL;
                rprintf(FERROR, "readlink %s failed: %s\n",
                        full_fname(fname), strerror(save_errno));
                return NULL;
@@ -733,9 +812,9 @@ struct file_struct *make_file(char *fname, struct string_area **ap,
        if ((p = strrchr(fname, '/'))) {
                static char *lastdir;
                *p = 0;
-               if (lastdir && strcmp(fname, lastdir) == 0) {
+               if (lastdir && strcmp(fname, lastdir) == 0)
                        file->dirname = lastdir;
-               else {
+               else {
                        file->dirname = strdup(fname);
                        lastdir = file->dirname;
                }
@@ -751,43 +830,32 @@ struct file_struct *make_file(char *fname, struct string_area **ap,
        file->mode = st.st_mode;
        file->uid = st.st_uid;
        file->gid = st.st_gid;
-       file->dev = st.st_dev;
-       file->inode = st.st_ino;
+       if (preserve_hard_links) {
+               if (protocol_version < 28 ? S_ISREG(st.st_mode)
+                   : !S_ISDIR(st.st_mode) && st.st_nlink > 1) {
+                       if (!(file->link_u.idev = new(struct idev)))
+                               out_of_memory("file inode data");
+                       file->F_DEV = st.st_dev;
+                       file->F_INODE = st.st_ino;
+               }
+       }
 #ifdef HAVE_STRUCT_STAT_ST_RDEV
-       file->rdev = st.st_rdev;
+       if (IS_DEVICE(st.st_mode))
+               file->u.rdev = st.st_rdev;
 #endif
 
 #if SUPPORT_LINKS
-       if (S_ISLNK(st.st_mode)) {
-               file->link = STRDUP(ap, linkbuf);
-       }
+       if (S_ISLNK(st.st_mode))
+               file->u.link = STRDUP(ap, linkbuf);
 #endif
 
-       if (always_checksum) {
-               file->sum = (char *) MALLOC(ap, MD4_SUM_LENGTH);
-               if (!file->sum)
+       if (always_checksum && S_ISREG(st.st_mode)) {
+               if (!(file->u.sum = (char*)MALLOC(ap, MD4_SUM_LENGTH)))
                        out_of_memory("md4 sum");
-               /* 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);
-               }
+               file_checksum(fname, file->u.sum, st.st_size);
        }
 
-       if (flist_dir) {
-               static char *lastdir;
-               if (lastdir && strcmp(lastdir, flist_dir) == 0) {
-                       file->basedir = lastdir;
-               } else {
-                       file->basedir = strdup(flist_dir);
-                       lastdir = file->basedir;
-               }
-       } else {
-               file->basedir = NULL;
-       }
+       file->basedir = flist_dir;
 
        if (!S_ISDIR(st.st_mode))
                stats.total_size += st.st_size;
@@ -796,11 +864,11 @@ struct file_struct *make_file(char *fname, struct string_area **ap,
 }
 
 
-
 void send_file_name(int f, struct file_list *flist, char *fname,
-                   int recursive, unsigned base_flags)
+                   int recursive, unsigned short base_flags)
 {
        struct file_struct *file;
+       char fbuf[MAXPATHLEN];
        extern int delete_excluded;
 
        /* f is set to -1 when calculating deletion file list */
@@ -815,8 +883,8 @@ void send_file_name(int f, struct file_list *flist, char *fname,
 
        flist_expand(flist);
 
-       if (write_batch)        /*  dw  */
-               file->flags = FLAG_DELETE;
+       if (write_batch)
+               file->flags |= FLAG_DELETE;
 
        if (file->basename[0]) {
                flist->files[flist->count++] = file;
@@ -826,53 +894,51 @@ void send_file_name(int f, struct file_list *flist, char *fname,
        if (S_ISDIR(file->mode) && recursive) {
                struct exclude_struct **last_exclude_list =
                    local_exclude_list;
-               send_directory(f, flist, f_name(file));
+               send_directory(f, flist, f_name_to(file, fbuf));
                local_exclude_list = last_exclude_list;
                return;
        }
 }
 
 
-
 static void send_directory(int f, struct file_list *flist, char *dir)
 {
        DIR *d;
        struct dirent *di;
        char fname[MAXPATHLEN];
-       int l;
+       unsigned int offset;
        char *p;
 
        d = opendir(dir);
        if (!d) {
-               io_error = 1;
+               io_error |= IOERR_GENERAL;
                rprintf(FERROR, "opendir %s failed: %s\n",
                        full_fname(dir), strerror(errno));
                return;
        }
 
-       strlcpy(fname, dir, MAXPATHLEN);
-       l = strlen(fname);
-       if (fname[l - 1] != '/') {
-               if (l == MAXPATHLEN - 1) {
-                       io_error = 1;
+       offset = strlcpy(fname, dir, MAXPATHLEN);
+       p = fname + offset;
+       if (offset >= MAXPATHLEN || p[-1] != '/') {
+               if (offset >= MAXPATHLEN - 1) {
+                       io_error |= IOERR_GENERAL;
                        rprintf(FERROR, "skipping long-named directory: %s\n",
                                full_fname(fname));
                        closedir(d);
                        return;
                }
-               strlcat(fname, "/", MAXPATHLEN);
-               l++;
+               *p++ = '/';
+               offset++;
        }
-       p = fname + strlen(fname);
 
        local_exclude_list = NULL;
 
        if (cvs_exclude) {
-               if (strlen(fname) + strlen(".cvsignore") <= MAXPATHLEN - 1) {
-                       strcpy(p, ".cvsignore");
-                       add_exclude_file(&exclude_list,fname,MISSING_OK,ADD_EXCLUDE);
-               else {
-                       io_error = 1;
+               if (strlcpy(p, ".cvsignore", MAXPATHLEN - offset)
+                   < MAXPATHLEN - offset)
+                       add_exclude_file(&local_exclude_list,fname,MISSING_OK,ADD_EXCLUDE);
+               else {
+                       io_error |= IOERR_GENERAL;
                        rprintf(FINFO,
                                "cannot cvs-exclude in long-named directory %s\n",
                                full_fname(fname));
@@ -884,13 +950,19 @@ static void send_directory(int f, struct file_list *flist, char *dir)
                if (dname[0] == '.' && (dname[1] == '\0'
                    || (dname[1] == '.' && dname[2] == '\0')))
                        continue;
-               strlcpy(p, dname, MAXPATHLEN - l);
-               send_file_name(f, flist, fname, recurse, 0);
+               if (strlcpy(p, dname, MAXPATHLEN - offset) < MAXPATHLEN - offset)
+                       send_file_name(f, flist, fname, recurse, 0);
+               else {
+                       io_error |= IOERR_GENERAL;
+                       rprintf(FINFO,
+                               "cannot send long-named file %s\n",
+                               full_fname(fname));
+               }
        }
        if (errno) {
-               io_error = 1;
+               io_error |= IOERR_GENERAL;
                rprintf(FERROR, "readdir(%s): (%d) %s\n",
-                   dir, errno, strerror(errno));
+                       dir, errno, strerror(errno));
        }
 
        if (local_exclude_list)
@@ -910,7 +982,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 {
        int l;
        STRUCT_STAT st;
-       char *p, *dir, *olddir;
+       char *p, *dir, olddir[sizeof curr_dir];
        char lastpath[MAXPATHLEN] = "";
        struct file_list *flist;
        int64 start_write;
@@ -924,9 +996,9 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
        flist = flist_new();
 
        if (f != -1) {
-               io_start_buffering(f);
+               io_start_buffering_out(f);
                if (filesfrom_fd >= 0) {
-                       if (argv[0] && !push_dir(argv[0], 0)) {
+                       if (argv[0] && !push_dir(argv[0])) {
                                rprintf(FERROR, "push_dir %s failed: %s\n",
                                        full_fname(argv[0]), strerror(errno));
                                exit_cleanup(RERR_FILESELECT);
@@ -956,14 +1028,15 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        if (l == 2 && fname[0] == '.') {
                                /* Turn "./" into just "." rather than "./." */
                                fname[1] = '\0';
-                       } else {
-                               strlcat(fname, ".", MAXPATHLEN);
+                       } else if (l < MAXPATHLEN) {
+                               fname[l++] = '.';
+                               fname[l] = '\0';
                        }
                }
 
                if (link_stat(fname, &st) != 0) {
                        if (f != -1) {
-                               io_error = 1;
+                               io_error |= IOERR_GENERAL;
                                rprintf(FERROR, "link_stat %s failed: %s\n",
                                        full_fname(fname), strerror(errno));
                        }
@@ -976,7 +1049,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                }
 
                dir = NULL;
-               olddir = NULL;
+               olddir[0] = '\0';
 
                if (!relative_paths) {
                        p = strrchr(fname, '/');
@@ -1027,16 +1100,27 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        fname = ".";
 
                if (dir && *dir) {
-                       olddir = push_dir(dir, 1);
+                       static char *lastdir;
+                       static int lastdir_len;
 
-                       if (!olddir) {
-                               io_error = 1;
+                       strcpy(olddir, curr_dir); /* can't overflow */
+
+                       if (!push_dir(dir)) {
+                               io_error |= IOERR_GENERAL;
                                rprintf(FERROR, "push_dir %s failed: %s\n",
                                        full_fname(dir), strerror(errno));
                                continue;
                        }
 
-                       flist_dir = dir;
+                       if (lastdir && strcmp(lastdir, dir) == 0) {
+                               flist_dir = lastdir;
+                               flist_dir_len = lastdir_len;
+                       } else {
+                               if (lastdir)
+                                       free(lastdir);
+                               flist_dir = lastdir = strdup(dir);
+                               flist_dir_len = lastdir_len = strlen(dir);
+                       }
                }
 
                if (one_file_system)
@@ -1044,9 +1128,10 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 
                send_file_name(f, flist, fname, recurse, FLAG_DELETE);
 
-               if (olddir != NULL) {
+               if (olddir[0]) {
                        flist_dir = NULL;
-                       if (pop_dir(olddir) != 0) {
+                       flist_dir_len = 0;
+                       if (!pop_dir(olddir)) {
                                rprintf(FERROR, "pop_dir %s failed: %s\n",
                                        full_fname(dir), strerror(errno));
                                exit_cleanup(RERR_FILESELECT);
@@ -1056,31 +1141,25 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 
        if (f != -1) {
                send_file_entry(NULL, f, 0);
-       }
 
-       if (show_filelist_p() && f != -1) {
-               finish_filelist_progress(flist);
+               if (show_filelist_p())
+                       finish_filelist_progress(flist);
        }
 
        clean_flist(flist, 0, 0);
 
-       /* now send the uid/gid list. This was introduced in protocol
-          version 15 */
        if (f != -1) {
+               /* Now send the uid/gid list. This was introduced in
+                * protocol version 15 */
                send_uid_list(f);
-       }
 
-       /* send the io_error flag */
-       if (f != -1) {
-               extern int module_id;
+               /* send the io_error flag */
                write_int(f, lp_ignore_errors(module_id) ? 0 : io_error);
-       }
 
-       if (f != -1) {
                io_end_buffering();
                stats.flist_size = stats.total_written - start_write;
                stats.num_files = flist->count;
-               if (write_batch)        /*  dw  */
+               if (write_batch)
                        write_batch_flist_info(flist->count, flist->files);
        }
 
@@ -1094,7 +1173,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 struct file_list *recv_file_list(int f)
 {
        struct file_list *flist;
-       unsigned char flags;
+       unsigned short flags;
        int64 start_read;
        extern int list_only;
 
@@ -1114,11 +1193,13 @@ struct file_list *recv_file_list(int f)
                goto oom;
 
 
-       for (flags = read_byte(f); flags; flags = read_byte(f)) {
+       while ((flags = read_byte(f)) != 0) {
                int i = flist->count;
 
                flist_expand(flist);
 
+               if (protocol_version >= 28 && (flags & EXTENDED_FLAGS))
+                       flags |= read_byte(f) << 8;
                receive_file_entry(&flist->files[i], flags, f);
 
                if (S_ISREG(flist->files[i]->mode))
@@ -1128,45 +1209,41 @@ struct file_list *recv_file_list(int f)
 
                maybe_emit_filelist_progress(flist);
 
-               if (verbose > 2)
+               if (verbose > 2) {
                        rprintf(FINFO, "recv_file_name(%s)\n",
                                f_name(flist->files[i]));
+               }
        }
-
+       receive_file_entry(NULL, 0, 0); /* Signal that we're done. */
 
        if (verbose > 2)
                rprintf(FINFO, "received %d names\n", flist->count);
 
-       clean_flist(flist, relative_paths, 1);
-
-       if (show_filelist_p()) {
+       if (show_filelist_p())
                finish_filelist_progress(flist);
-       }
 
-       /* now recv the uid/gid list. This was introduced in protocol version 15 */
+       clean_flist(flist, relative_paths, 1);
+
        if (f != -1) {
+               /* Now send the uid/gid list. This was introduced in
+                * protocol version 15 */
                recv_uid_list(f, flist);
-       }
 
-       /* recv the io_error flag */
-       if (f != -1 && !read_batch) {   /* dw-added readbatch */
-               extern int module_id;
-               extern int ignore_errors;
-               if (lp_ignore_errors(module_id) || ignore_errors) {
-                       read_int(f);
-               } else {
-                       io_error |= read_int(f);
+               if (!read_batch) {
+                       /* Recv the io_error flag */
+                       if (lp_ignore_errors(module_id) || ignore_errors)
+                               read_int(f);
+                       else
+                               io_error |= read_int(f);
                }
        }
 
        if (list_only) {
                int i;
-               for (i = 0; i < flist->count; i++) {
+               for (i = 0; i < flist->count; i++)
                        list_file_entry(flist->files[i]);
-               }
        }
 
-
        if (verbose > 2)
                rprintf(FINFO, "recv_file_list done\n");
 
@@ -1181,21 +1258,20 @@ struct file_list *recv_file_list(int f)
 }
 
 
-/*
- * XXX: This is currently the hottest function while building the file
- * list, because building f_name()s every time is expensive.
- **/
-int file_compare(struct file_struct **f1, struct file_struct **f2)
+int file_compare(struct file_struct **file1, struct file_struct **file2)
 {
-       if (!(*f1)->basename && !(*f2)->basename)
+       struct file_struct *f1 = *file1;
+       struct file_struct *f2 = *file2;
+
+       if (!f1->basename && !f2->basename)
                return 0;
-       if (!(*f1)->basename)
+       if (!f1->basename)
                return -1;
-       if (!(*f2)->basename)
+       if (!f2->basename)
                return 1;
-       if ((*f1)->dirname == (*f2)->dirname)
-               return u_strcmp((*f1)->basename, (*f2)->basename);
-       return u_strcmp(f_name(*f1), f_name(*f2));
+       if (f1->dirname == f2->dirname)
+               return u_strcmp(f1->basename, f2->basename);
+       return f_name_cmp(f1, f2);
 }
 
 
@@ -1210,15 +1286,13 @@ int flist_find(struct file_list *flist, struct file_struct *f)
 
        while (low != high) {
                int mid = (low + high) / 2;
-               int ret =
-                   file_compare(&flist->files[flist_up(flist, mid)], &f);
+               int ret = file_compare(&flist->files[flist_up(flist, mid)],&f);
                if (ret == 0)
                        return flist_up(flist, mid);
-               if (ret > 0) {
+               if (ret > 0)
                        high = mid;
-               } else {
+               else
                        low = mid + 1;
-               }
        }
 
        if (file_compare(&flist->files[flist_up(flist, low)], &f) == 0)
@@ -1236,10 +1310,10 @@ void free_file(struct file_struct *file)
                return;
        if (file->basename)
                free(file->basename);
-       if (file->link)
-               free(file->link);
-       if (file->sum)
-               free(file->sum);
+       if (!IS_DEVICE(file->mode) && file->u.link)
+               free(file->u.link); /* Handles u.sum too. */
+       if (file->link_u.idev)
+               free((char*)file->link_u.idev); /* Handles link_u.links too. */
        *file = null_file;
 }
 
@@ -1299,7 +1373,6 @@ void flist_free(struct file_list *flist)
 static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 {
        int i, prev_i = 0;
-       char *name, *prev_name = NULL;
 
        if (!flist || flist->count == 0)
                return;
@@ -1310,19 +1383,17 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
        for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
                if (flist->files[i]->basename) {
                        prev_i = i;
-                       prev_name = f_name(flist->files[i]);
                        break;
                }
        }
        while (++i < flist->count) {
                if (!flist->files[i]->basename)
                        continue;
-               name = f_name(flist->files[i]);
-               if (strcmp(name, prev_name) == 0) {
+               if (f_name_cmp(flist->files[i], flist->files[prev_i]) == 0) {
                        if (verbose > 1 && !am_server) {
                                rprintf(FINFO,
                                        "removing duplicate name %s from file list %d\n",
-                                       name, i);
+                                       f_name(flist->files[i]), i);
                        }
                        /* Make sure that if we unduplicate '.', that we don't
                         * lose track of a user-specified starting point (or
@@ -1337,12 +1408,8 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
                                flist->files[i][0] = null_file;
                        else
                                free_file(flist->files[i]);
-               }
-               else
+               } else
                        prev_i = i;
-               /* We set prev_name every iteration to avoid it becoming
-                * invalid when names[][] in f_name() wraps around. */
-               prev_name = name;
        }
 
        if (strip_root) {
@@ -1368,8 +1435,8 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
                return;
 
        for (i = 0; i < flist->count; i++) {
-               rprintf(FINFO, "[%d] i=%d %s %s mode=0%o len=%.0f\n",
-                       (int) getpid(), i,
+               rprintf(FINFO, "[%ld] i=%d %s %s mode=0%o len=%.0f\n",
+                       (long) getpid(), i,
                        NS(flist->files[i]->dirname),
                        NS(flist->files[i]->basename),
                        (int) flist->files[i]->mode,
@@ -1378,33 +1445,104 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
 }
 
 
-/*
- * return the full filename of a flist entry
- *
- * This function is too expensive at the moment, because it copies
- * strings when often we only want to compare them.  In any case,
- * using strlcat is silly because it will walk the string repeatedly.
+enum fnc_state { fnc_DIR, fnc_SLASH, fnc_BASE };
+
+/* Compare the names of two file_struct entities, just like strcmp()
+ * would do if it were operating on the joined strings.  We assume
+ * that there are no 0-length strings.
  */
-char *f_name(struct file_struct *f)
+int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
 {
-       static char names[10][MAXPATHLEN];
-       static int n;
-       char *p = names[n];
+       int dif;
+       const uchar *c1, *c2;
+       enum fnc_state state1, state2;
+
+       if (!f1 || !f1->basename) {
+               if (!f2 || !f2->basename)
+                       return 0;
+               return -1;
+       }
+       if (!f2 || !f2->basename)
+               return 1;
+
+       if (!(c1 = (uchar*)f1->dirname)) {
+               state1 = fnc_BASE;
+               c1 = (uchar*)f1->basename;
+       } else
+               state1 = fnc_DIR;
+       if (!(c2 = (uchar*)f2->dirname)) {
+               state2 = fnc_BASE;
+               c2 = (uchar*)f2->basename;
+       } else
+               state2 = fnc_DIR;
+
+       while (1) {
+               if ((dif = (int)*c1 - (int)*c2) != 0)
+                       break;
+               if (!*++c1) {
+                       switch (state1) {
+                       case fnc_DIR:
+                               state1 = fnc_SLASH;
+                               c1 = (uchar*)"/";
+                               break;
+                       case fnc_SLASH:
+                               state1 = fnc_BASE;
+                               c1 = (uchar*)f1->basename;
+                               break;
+                       case fnc_BASE:
+                               break;
+                       }
+               }
+               if (!*++c2) {
+                       switch (state2) {
+                       case fnc_DIR:
+                               state2 = fnc_SLASH;
+                               c2 = (uchar*)"/";
+                               break;
+                       case fnc_SLASH:
+                               state2 = fnc_BASE;
+                               c2 = (uchar*)f2->basename;
+                               break;
+                       case fnc_BASE:
+                               if (!*c1)
+                                       return 0;
+                               break;
+                       }
+               }
+       }
+
+       return dif;
+}
+
 
+/* Return a copy of the full filename of a flist entry, using the indicated
+ * buffer.  No size-checking is done because we checked the size when creating
+ * the file_struct entry.
+ */
+char *f_name_to(struct file_struct *f, char *fbuf)
+{
        if (!f || !f->basename)
                return NULL;
 
-       n = (n + 1) % 10;
-
        if (f->dirname) {
-               int off;
+               int len = strlen(f->dirname);
+               memcpy(fbuf, f->dirname, len);
+               fbuf[len] = '/';
+               strcpy(fbuf + len + 1, f->basename);
+       } else
+               strcpy(fbuf, f->basename);
+       return fbuf;
+}
 
-               off = strlcpy(p, f->dirname, MAXPATHLEN);
-               off += strlcpy(p + off, "/", MAXPATHLEN - off);
-               off += strlcpy(p + off, f->basename, MAXPATHLEN - off);
-       } else {
-               strlcpy(p, f->basename, MAXPATHLEN);
-       }
 
-       return p;
+/* Like f_name_to(), but we rotate through 5 static buffers of our own.
+ */
+char *f_name(struct file_struct *f)
+{
+       static char names[5][MAXPATHLEN];
+       static unsigned int n;
+
+       n = (n + 1) % (sizeof names / sizeof names[0]);
+
+       return f_name_to(f, names[n]);
 }