Tweaking the license text a bit more.
[rsync/rsync.git] / flist.c
diff --git a/flist.c b/flist.c
index 4058aca..e33cd58 100644 (file)
--- a/flist.c
+++ b/flist.c
@@ -7,8 +7,9 @@
  * Copyright (C) 2002-2007 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.
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 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
@@ -16,8 +17,7 @@
  * 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.
+ * with this program; if not, visit the http://fsf.org website.
  */
 
 #include "rsync.h"
@@ -145,7 +145,7 @@ static void finish_filelist_progress(const struct file_list *flist)
        if (do_progress) {
                /* This overwrites the progress line */
                rprintf(FINFO, "%d file%sto consider\n",
-                       flist->count, flist->count == 1 ? " " : "s ");
+                       flist->used, flist->used == 1 ? " " : "s ");
        } else
                rprintf(FINFO, "done\n");
 }
@@ -272,12 +272,12 @@ static const char *pathname, *orig_dir;
 static int pathname_len;
 
 
-/* Make sure flist can hold at least flist->count + extra entries. */
+/* Make sure flist can hold at least flist->used + extra entries. */
 static void flist_expand(struct file_list *flist, int extra)
 {
        struct file_struct **new_ptr;
 
-       if (flist->count + extra <= flist->malloced)
+       if (flist->used + extra <= flist->malloced)
                return;
 
        if (flist->malloced < FLIST_START)
@@ -289,8 +289,8 @@ static void flist_expand(struct file_list *flist, int extra)
 
        /* In case count jumped or we are starting the list
         * with a known size just set it. */
-       if (flist->malloced < flist->count + extra)
-               flist->malloced = flist->count + extra;
+       if (flist->malloced < flist->used + extra)
+               flist->malloced = flist->used + extra;
 
        new_ptr = realloc_array(flist->files, struct file_struct *,
                                flist->malloced);
@@ -691,10 +691,10 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
         && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
                struct file_struct *first;
                first_hlink_ndx = read_varint30(f);
-               if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->count) {
+               if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->used) {
                        rprintf(FERROR,
                                "hard-link reference out of range: %d (%d)\n",
-                               first_hlink_ndx, flist->count);
+                               first_hlink_ndx, flist->used);
                        exit_cleanup(RERR_PROTOCOL);
                }
                first = flist->files[first_hlink_ndx];
@@ -709,7 +709,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
                 || (preserve_specials && IS_SPECIAL(mode))) {
                        uint32 *devp = F_RDEV_P(first);
                        rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
-                       extra_len += 2 * EXTRA_LEN;
+                       extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
                }
                if (preserve_links && S_ISLNK(mode))
                        linkname_len = strlen(F_SYMLINK(first)) + 1;
@@ -780,7 +780,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
                                rdev_minor = read_int(f);
                        rdev = MAKEDEV(rdev_major, rdev_minor);
                }
-               extra_len += 2 * EXTRA_LEN;
+               extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
                file_length = 0;
        } else if (protocol_version < 28)
                rdev = MAKEDEV(0, 0);
@@ -828,7 +828,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
        if (inc_recurse && S_ISDIR(mode)) {
                if (one_file_system) {
                        /* Room to save the dir's device for -x */
-                       extra_len += 2 * EXTRA_LEN;
+                       extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
                }
                pool = dir_flist->file_pool;
        } else
@@ -865,7 +865,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
        }
 #ifdef ICONV_OPTION
        if (ic_ndx)
-               F_NDX(file) = flist->count + flist->ndx_start;
+               F_NDX(file) = flist->used + flist->ndx_start;
 #endif
 
        if (basename != thisname) {
@@ -919,7 +919,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
        if (preserve_hard_links && xflags & XMIT_HLINKED) {
                if (protocol_version >= 30) {
                        F_HL_GNUM(file) = xflags & XMIT_HLINK_FIRST
-                                       ? flist->count : first_hlink_ndx;
+                                       ? flist->used : first_hlink_ndx;
                } else {
                        static int32 cnt = 0;
                        struct idev_node *np;
@@ -946,7 +946,7 @@ static struct file_struct *recv_file_entry(struct file_list *flist,
 
        if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
                if (S_ISREG(mode))
-                       bp = (char*)F_SUM(file);
+                       bp = F_SUM(file);
                else {
                        /* Prior to 28, we get a useless set of nulls. */
                        bp = tmp_sum;
@@ -1003,8 +1003,7 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
        alloc_pool_t *pool;
        char *bp;
 
-       if (strlcpy(thisname, fname, sizeof thisname)
-           >= sizeof thisname - pathname_len) {
+       if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
                rprintf(FINFO, "skipping overly long name: %s\n", fname);
                return NULL;
        }
@@ -1095,7 +1094,7 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
                if (flist->prev && S_ISDIR(st.st_mode)
                 && flags & FLAG_DIVERT_DIRS) {
                        /* Room for parent/sibling/next-child info. */
-                       extra_len += 3 * EXTRA_LEN;
+                       extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
                        dir_count++;
                        pool = dir_flist->file_pool;
                } else
@@ -1241,14 +1240,14 @@ void unmake_file(struct file_struct *file)
 
 static struct file_struct *send_file_name(int f, struct file_list *flist,
                                          char *fname, STRUCT_STAT *stp,
-                                         int flags, int filter_flags)
+                                         int flags, int filter_level)
 {
        struct file_struct *file;
 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
        statx sx;
 #endif
 
-       file = make_file(fname, flist, stp, flags, filter_flags);
+       file = make_file(fname, flist, stp, flags, filter_level);
        if (!file)
                return NULL;
 
@@ -1271,12 +1270,12 @@ static struct file_struct *send_file_name(int f, struct file_list *flist,
        }
 #endif
 
-       maybe_emit_filelist_progress(flist->count + flist_count_offset);
+       maybe_emit_filelist_progress(flist->used + flist_count_offset);
 
        flist_expand(flist, 1);
-       flist->files[flist->count++] = file;
+       flist->files[flist->used++] = file;
        if (f >= 0) {
-               send_file_entry(f, file, flist->count - 1);
+               send_file_entry(f, file, flist->used - 1);
 #ifdef SUPPORT_ACLS
                if (preserve_acls && !S_ISLNK(file->mode)) {
                        send_acl(&sx, f);
@@ -1395,7 +1394,7 @@ static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
        int i;
        int32 *dp = NULL;
        int32 *parent_dp = parent_ndx < 0 ? NULL
-                        : F_DIRNODE_P(dir_flist->sorted[parent_ndx]);
+                        : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
 
        flist_expand(dir_flist, dir_cnt);
        dir_flist->sorted = dir_flist->files;
@@ -1406,7 +1405,7 @@ static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
                if (!S_ISDIR(file->mode))
                        continue;
 
-               dir_flist->files[dir_flist->count++] = file;
+               dir_flist->files[dir_flist->used++] = file;
                dir_cnt--;
 
                if (!(file->flags & FLAG_XFER_DIR)
@@ -1414,13 +1413,13 @@ static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
                        continue;
 
                if (dp)
-                       DIR_NEXT_SIBLING(dp) = dir_flist->count - 1;
+                       DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
                else if (parent_dp)
-                       DIR_FIRST_CHILD(parent_dp) = dir_flist->count - 1;
+                       DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
                else
-                       send_dir_ndx = dir_flist->count - 1;
+                       send_dir_ndx = dir_flist->used - 1;
 
-               dp = F_DIRNODE_P(file);
+               dp = F_DIR_NODE_P(file);
                DIR_PARENT(dp) = parent_ndx;
                DIR_FIRST_CHILD(dp) = -1;
        }
@@ -1441,8 +1440,8 @@ static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
        char *p;
        DIR *d;
        int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
-       int start = flist->count;
-       int filter_flags = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
+       int start = flist->used;
+       int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
 
        assert(flist != NULL);
 
@@ -1471,7 +1470,7 @@ static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
                        continue;
                }
 
-               send_file_name(f, flist, fbuf, NULL, flags, filter_flags);
+               send_file_name(f, flist, fbuf, NULL, flags, filter_level);
        }
 
        fbuf[len] = '\0';
@@ -1484,8 +1483,8 @@ static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
        closedir(d);
 
        if (f >= 0 && recurse && !divert_dirs) {
-               int i, end = flist->count - 1;
-               /* send_if_directory() bumps flist->count, so use "end". */
+               int i, end = flist->used - 1;
+               /* send_if_directory() bumps flist->used, so use "end". */
                for (i = start; i <= end; i++)
                        send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
        }
@@ -1522,8 +1521,7 @@ void send_extra_file_list(int f, int at_least)
         * files in the upcoming file-lists. */
        if (cur_flist->next) {
                flist = first_flist->prev; /* the newest flist */
-               future_cnt = flist->count + flist->ndx_start
-                          - cur_flist->next->ndx_start;
+               future_cnt = flist->ndx_end - cur_flist->next->ndx_start + 1;
        } else
                future_cnt = 0;
        while (future_cnt < at_least) {
@@ -1541,9 +1539,10 @@ void send_extra_file_list(int f, int at_least)
 #endif
                        dir_ndx = send_dir_ndx;
                write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
+               flist->parent_ndx = dir_ndx;
 
                send1extra(f, file, flist);
-               dp = F_DIRNODE_P(file);
+               dp = F_DIR_NODE_P(file);
 
                /* If there are any duplicate directory names that follow, we
                 * send all the dirs together in one file-list.  The dir_flist
@@ -1553,30 +1552,33 @@ void send_extra_file_list(int f, int at_least)
                        send_dir_ndx = dir_ndx;
                        file = dir_flist->sorted[dir_ndx];
                        send1extra(f, file, flist);
-                       dp = F_DIRNODE_P(file);
+                       dp = F_DIR_NODE_P(file);
                }
 
                write_byte(f, 0);
 
 #ifdef ICONV_OPTION
                if (need_unsorted_flist) {
-                       if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
+                       if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
                                out_of_memory("send_extra_file_list");
                        memcpy(flist->sorted, flist->files,
-                              flist->count * sizeof (struct file_struct*));
+                              flist->used * sizeof (struct file_struct*));
                } else
 #endif
                        flist->sorted = flist->files;
 
                clean_flist(flist, 0);
 
+               flist->ndx_end = flist->ndx_start + flist->used - 1
+                              - (dir_count - dstart);
+
                add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
                flist_done_allocating(flist);
 
-               file_total += flist->count;
-               future_cnt += flist->count;
+               file_total += flist->used;
+               future_cnt += flist->used;
                stats.flist_size += stats.total_written - start_write;
-               stats.num_files += flist->count;
+               stats.num_files += flist->used;
                if (verbose > 3)
                        output_flist(flist);
 
@@ -1593,7 +1595,7 @@ void send_extra_file_list(int f, int at_least)
                                }
                                send_dir_depth--;
                                file = dir_flist->sorted[send_dir_ndx];
-                               dp = F_DIRNODE_P(file);
+                               dp = F_DIR_NODE_P(file);
                        }
                        send_dir_ndx = DIR_NEXT_SIBLING(dp);
                }
@@ -1867,20 +1869,27 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
 #ifdef ICONV_OPTION
        if (need_unsorted_flist) {
                if (inc_recurse) {
-                       if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
+                       if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
                                out_of_memory("send_file_list");
                        memcpy(flist->sorted, flist->files,
-                              flist->count * sizeof (struct file_struct*));
+                              flist->used * sizeof (struct file_struct*));
                        clean_flist(flist, 0);
-               } else
+               } else {
                        flist->sorted = flist->files;
+                       flist->low = 0;
+                       flist->high = flist->used - 1;
+               }
        } else
 #endif
        {
                flist->sorted = flist->files;
                clean_flist(flist, 0);
        }
-       file_total += flist->count;
+       file_total += flist->used;
+
+       /* We don't subtract dir_count for the first send since we
+        * might have one or more dot dirs which need to get sent. */
+       flist->ndx_end = flist->ndx_start + flist->used - 1;
 
        if (!numeric_ids && !inc_recurse)
                send_id_list(f);
@@ -1895,7 +1904,7 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                io_end_buffering_out();
 
        stats.flist_size = stats.total_written - start_write;
-       stats.num_files = flist->count;
+       stats.num_files = flist->used;
 
        if (verbose > 3)
                output_flist(flist);
@@ -1946,7 +1955,7 @@ struct file_list *recv_file_list(int f)
        if (inc_recurse) {
                if (flist->ndx_start == 0)
                        dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
-               dstart = dir_flist->count;
+               dstart = dir_flist->used;
        } else {
                dir_flist = flist;
                dstart = 0;
@@ -1963,22 +1972,26 @@ struct file_list *recv_file_list(int f)
 
                if (inc_recurse && S_ISDIR(file->mode)) {
                        flist_expand(dir_flist, 1);
-                       dir_flist->files[dir_flist->count++] = file;
+                       dir_flist->files[dir_flist->used++] = file;
                }
 
-               flist->files[flist->count++] = file;
+               flist->files[flist->used++] = file;
 
-               maybe_emit_filelist_progress(flist->count);
+               maybe_emit_filelist_progress(flist->used);
 
                if (verbose > 2) {
                        rprintf(FINFO, "recv_file_name(%s)\n",
                                f_name(file, NULL));
                }
        }
-       file_total += flist->count;
+       file_total += flist->used;
+
+       flist->ndx_end = flist->ndx_start + flist->used - 1;
+       if (inc_recurse && flist->ndx_start)
+               flist->ndx_end -= dir_flist->used - dstart;
 
        if (verbose > 2)
-               rprintf(FINFO, "received %d names\n", flist->count);
+               rprintf(FINFO, "received %d names\n", flist->used);
 
        if (show_filelist_p())
                finish_filelist_progress(flist);
@@ -1990,25 +2003,25 @@ struct file_list *recv_file_list(int f)
                 * order and for calling flist_find()).  We keep the "files"
                 * list unsorted for our exchange of index numbers with the
                 * other side (since their names may not sort the same). */
-               if (!(flist->sorted = new_array(struct file_struct *, flist->count)))
+               if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
                        out_of_memory("recv_file_list");
                memcpy(flist->sorted, flist->files,
-                      flist->count * sizeof (struct file_struct*));
-               if (inc_recurse && dir_flist->count > dstart) {
+                      flist->used * sizeof (struct file_struct*));
+               if (inc_recurse && dir_flist->used > dstart) {
                        dir_flist->sorted = realloc_array(dir_flist->sorted,
                                                struct file_struct *,
-                                               dir_flist->count);
+                                               dir_flist->used);
                        memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
-                              (dir_flist->count - dstart) * sizeof (struct file_struct*));
-                       fsort(dir_flist->sorted + dstart, dir_flist->count - dstart);
+                              (dir_flist->used - dstart) * sizeof (struct file_struct*));
+                       fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
                }
        } else
 #endif
        {
                flist->sorted = flist->files;
-               if (inc_recurse && dir_flist->count > dstart) {
+               if (inc_recurse && dir_flist->used > dstart) {
                        dir_flist->sorted = dir_flist->files;
-                       fsort(dir_flist->sorted + dstart, dir_flist->count - dstart);
+                       fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
                }
        }
 
@@ -2032,7 +2045,7 @@ struct file_list *recv_file_list(int f)
 
        if (list_only) {
                int i;
-               for (i = 0; i < flist->count; i++)
+               for (i = flist->low; i <= flist->high; i++)
                        list_file_entry(flist->files[i]);
        }
 
@@ -2040,7 +2053,7 @@ struct file_list *recv_file_list(int f)
                rprintf(FINFO, "recv_file_list done\n");
 
        stats.flist_size += stats.total_read - start_read;
-       stats.num_files += flist->count;
+       stats.num_files += flist->used;
 
        return flist;
 }
@@ -2056,12 +2069,12 @@ void recv_additional_file_list(int f)
                change_local_filter_dir(NULL, 0, 0);
        } else {
                ndx = NDX_FLIST_OFFSET - ndx;
-               if (ndx < 0 || ndx >= dir_flist->count) {
+               if (ndx < 0 || ndx >= dir_flist->used) {
                        ndx = NDX_FLIST_OFFSET - ndx;
                        rprintf(FERROR,
                                "[%s] Invalid dir index: %d (%d - %d)\n",
                                who_am_i(), ndx, NDX_FLIST_OFFSET,
-                               NDX_FLIST_OFFSET - dir_flist->count + 1);
+                               NDX_FLIST_OFFSET - dir_flist->used + 1);
                        exit_cleanup(RERR_PROTOCOL);
                }
                if (verbose > 3) {
@@ -2167,8 +2180,7 @@ struct file_list *flist_new(int flags, char *msg)
                } else {
                        flist->file_pool = first_flist->file_pool;
 
-                       flist->ndx_start = first_flist->prev->ndx_start
-                                        + first_flist->prev->count;
+                       flist->ndx_start = first_flist->prev->ndx_end + 2;
 
                        flist->prev = first_flist->prev;
                        flist->prev->next = first_flist->prev = flist;
@@ -2200,7 +2212,7 @@ void flist_free(struct file_list *flist)
                                flist->next = first_flist;
                }
                flist->next->prev = flist->prev;
-               file_total -= flist->count;
+               file_total -= flist->used;
                flist_cnt--;
        }
 
@@ -2224,15 +2236,16 @@ static void clean_flist(struct file_list *flist, int strip_root)
 
        if (!flist)
                return;
-       if (flist->count == 0) {
+       if (flist->used == 0) {
                flist->high = -1;
+               flist->low = 0;
                return;
        }
 
-       fsort(flist->sorted, flist->count);
+       fsort(flist->sorted, flist->used);
 
        if (!am_sender || inc_recurse) {
-               for (i = prev_i = 0; i < flist->count; i++) {
+               for (i = prev_i = 0; i < flist->used; i++) {
                        if (F_IS_ACTIVE(flist->sorted[i])) {
                                prev_i = i;
                                break;
@@ -2240,11 +2253,11 @@ static void clean_flist(struct file_list *flist, int strip_root)
                }
                flist->low = prev_i;
        } else {
-               i = prev_i = flist->count - 1;
+               i = prev_i = flist->used - 1;
                flist->low = 0;
        }
 
-       while (++i < flist->count) {
+       while (++i < flist->used) {
                int j;
                struct file_struct *file = flist->sorted[i];
 
@@ -2396,9 +2409,9 @@ static void output_flist(struct file_list *flist)
        const char *who = who_am_i();
        int i;
 
-       rprintf(FINFO, "[%s] flist start=%d, count=%d, low=%d, high=%d\n",
-               who, flist->ndx_start, flist->count, flist->low, flist->high);
-       for (i = 0; i < flist->count; i++) {
+       rprintf(FINFO, "[%s] flist start=%d, end=%d, used=%d, low=%d, high=%d\n",
+               who, flist->ndx_start, flist->ndx_end, flist->used, flist->low, flist->high);
+       for (i = 0; i < flist->used; i++) {
                file = flist->sorted[i];
                if ((am_root || am_sender) && uid_ndx) {
                        snprintf(uidbuf, sizeof uidbuf, " uid=%u",
@@ -2613,6 +2626,7 @@ struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
        char dirbuf[MAXPATHLEN];
        int save_recurse = recurse;
        int save_xfer_dirs = xfer_dirs;
+       int save_prune_empty_dirs = prune_empty_dirs;
 
        if (dlen < 0) {
                dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
@@ -2629,10 +2643,12 @@ struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
        xfer_dirs = save_xfer_dirs;
        recurse = save_recurse;
        if (do_progress)
-               flist_count_offset += dirlist->count;
+               flist_count_offset += dirlist->used;
 
+       prune_empty_dirs = 0;
        dirlist->sorted = dirlist->files;
        clean_flist(dirlist, 0);
+       prune_empty_dirs = save_prune_empty_dirs;
 
        if (verbose > 3)
                output_flist(dirlist);