Fixed a typo in a variable name.
[rsync.git] / flist.c
diff --git a/flist.c b/flist.c
index d8115b66e435daa7eeeab819ae7538617b17c51d..ed26bb8b995648ea380bc891a063492c1d4ddc54 100644 (file)
--- a/flist.c
+++ b/flist.c
 /** @file flist.c
  * Generate and receive file lists
  *
- * @todo Get rid of the string_area optimization.  Efficiently
- * allocating blocks is the responsibility of the system's malloc
- * library, not of rsync.
- *
  * @sa http://lists.samba.org/pipermail/rsync/2000-June/002351.html
  *
  **/
@@ -35,57 +31,77 @@ extern struct stats stats;
 
 extern int verbose;
 extern int do_progress;
+extern int am_root;
 extern int am_server;
+extern int am_daemon;
+extern int am_sender;
+extern int delete_during;
 extern int always_checksum;
 extern int module_id;
 extern int ignore_errors;
-
-extern int cvs_exclude;
+extern int numeric_ids;
 
 extern int recurse;
-extern char *files_from;
+extern int xfer_dirs;
+extern char curr_dir[MAXPATHLEN];
+extern unsigned int curr_dir_len;
+extern char *backup_dir;
+extern char *backup_suffix;
 extern int filesfrom_fd;
 
 extern int one_file_system;
-extern int make_backups;
+extern int keep_dirlinks;
 extern int preserve_links;
 extern int preserve_hard_links;
 extern int preserve_perms;
 extern int preserve_devices;
 extern int preserve_uid;
 extern int preserve_gid;
-extern int preserve_times;
 extern int relative_paths;
 extern int implied_dirs;
+extern int make_backups;
+extern int backup_suffix_len;
 extern int copy_links;
 extern int copy_unsafe_links;
 extern int protocol_version;
 extern int sanitize_paths;
+extern int delete_excluded;
+extern int max_delete;
+extern int orig_umask;
+extern int list_only;
 
-extern int read_batch;
-extern int write_batch;
-
-extern struct exclude_struct **exclude_list;
-extern struct exclude_struct **server_exclude_list;
-extern struct exclude_struct **local_exclude_list;
+extern struct filter_list_struct filter_list;
+extern struct filter_list_struct server_filter_list;
 
 int io_error;
 
-static struct file_struct null_file;
 static char empty_sum[MD4_SUM_LENGTH];
+static unsigned int file_struct_len;
+static struct file_list *received_flist;
+static dev_t filesystem_dev; /* used to implement -x */
+static int deletion_count = 0; /* used to implement --max-delete */
 
 static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
+static void output_flist(struct file_list *flist, const char *whose_list);
+
+void init_flist(void)
+{
+       struct file_struct f;
+
+       /* Figure out how big the file_struct is without trailing padding */
+       file_struct_len = offsetof(struct file_struct, flags) + sizeof f.flags;
+}
 
 
 static int show_filelist_p(void)
 {
-       return verbose && (recurse || files_from) && !am_server;
+       return verbose && xfer_dirs && !am_server;
 }
 
 static void start_filelist_progress(char *kind)
 {
        rprintf(FINFO, "%s ... ", kind);
-       if ((verbose > 1) || do_progress)
+       if (verbose > 1 || do_progress)
                rprintf(FINFO, "\n");
        rflush(FINFO);
 }
@@ -99,7 +115,7 @@ static void emit_filelist_progress(const struct file_list *flist)
 
 static void maybe_emit_filelist_progress(const struct file_list *flist)
 {
-       if (do_progress && show_filelist_p() && ((flist->count % 100) == 0))
+       if (do_progress && show_filelist_p() && (flist->count % 100) == 0)
                emit_filelist_progress(flist);
 }
 
@@ -120,79 +136,29 @@ void show_flist_stats(void)
 }
 
 
-static struct string_area *string_area_new(int size)
-{
-       struct string_area *a;
-
-       if (size <= 0)
-               size = ARENA_SIZE;
-       a = new(struct string_area);
-       if (!a)
-               out_of_memory("string_area_new");
-       a->current = a->base = new_array(char, size);
-       if (!a->current)
-               out_of_memory("string_area_new buffer");
-       a->end = a->base + size;
-       a->next = NULL;
-
-       return a;
-}
-
-static void string_area_free(struct string_area *a)
-{
-       struct string_area *next;
-
-       for (; a; a = next) {
-               next = a->next;
-               free(a->base);
-       }
-}
-
-static char *string_area_malloc(struct string_area **ap, int size)
-{
-       char *p;
-       struct string_area *a;
-
-       /* does the request fit into the current space? */
-       a = *ap;
-       if (a->current + size >= a->end) {
-               /* no; get space, move new string_area to front of the list */
-               a = string_area_new(size > ARENA_SIZE ? size : ARENA_SIZE);
-               a->next = *ap;
-               *ap = a;
-       }
-
-       /* have space; do the "allocation." */
-       p = a->current;
-       a->current += size;
-       return p;
-}
-
-static char *string_area_strdup(struct string_area **ap, const char *src)
-{
-       char *dest = string_area_malloc(ap, strlen(src) + 1);
-       return strcpy(dest, src);
-}
-
 static void list_file_entry(struct file_struct *f)
 {
        char perms[11];
 
-       if (!f->basename)
+       if (!f->basename) {
                /* this can happen if duplicate names were removed */
                return;
+       }
 
        permstring(perms, f->mode);
 
+#if SUPPORT_LINKS
        if (preserve_links && S_ISLNK(f->mode)) {
                rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
                        perms,
-                       (double) f->length, timestring(f->modtime),
+                       (double)f->length, timestring(f->modtime),
                        f_name(f), f->u.link);
-       } else {
+       } else
+#endif
+       {
                rprintf(FINFO, "%s %11.0f %s %s\n",
                        perms,
-                       (double) f->length, timestring(f->modtime),
+                       (double)f->length, timestring(f->modtime),
                        f_name(f));
        }
 }
@@ -212,15 +178,15 @@ 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)
+static int readlink_stat(const char *path, STRUCT_STAT *buffer, char *linkbuf)
 {
 #if SUPPORT_LINKS
        if (copy_links)
                return do_stat(path, buffer);
-       if (do_lstat(path, buffer) == -1)
+       if (link_stat(path, buffer, 0) < 0)
                return -1;
        if (S_ISLNK(buffer->st_mode)) {
-               int l = readlink((char *) path, linkbuf, MAXPATHLEN - 1);
+               int l = readlink((char *)path, linkbuf, MAXPATHLEN - 1);
                if (l == -1)
                        return -1;
                linkbuf[l] = 0;
@@ -238,26 +204,31 @@ int readlink_stat(const char *path, STRUCT_STAT *buffer, char *linkbuf)
 #endif
 }
 
-int link_stat(const char *path, STRUCT_STAT * buffer)
+int link_stat(const char *path, STRUCT_STAT *buffer, int follow_dirlinks)
 {
 #if SUPPORT_LINKS
        if (copy_links)
                return do_stat(path, buffer);
-       return do_lstat(path, buffer);
+       if (do_lstat(path, buffer) < 0)
+               return -1;
+       if (follow_dirlinks && S_ISLNK(buffer->st_mode)) {
+               STRUCT_STAT st;
+               if (do_stat(path, &st) == 0 && S_ISDIR(st.st_mode))
+                       *buffer = st;
+       }
+       return 0;
 #else
        return do_stat(path, buffer);
 #endif
 }
 
-/*
- * This function is used to check if a file should be included/excluded
+/* 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.  The value of
- * exclude_level is set to either SERVER_EXCLUDES or ALL_EXCLUDES.
- */
-static int check_exclude_file(char *fname, int is_dir, int exclude_level)
+ * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
+static int is_excluded(char *fname, int is_dir, int filter_level)
 {
 #if 0 /* This currently never happens, so avoid a useless compare. */
-       if (exclude_level == NO_EXCLUDES)
+       if (filter_level == NO_FILTERS)
                return 0;
 #endif
        if (fname) {
@@ -271,86 +242,80 @@ static int check_exclude_file(char *fname, int is_dir, int exclude_level)
                                return 0;
                }
        }
-       if (server_exclude_list
-        && check_exclude(server_exclude_list, fname, is_dir))
+       if (server_filter_list.head
+           && check_filter(&server_filter_list, fname, is_dir) < 0)
                return 1;
-       if (exclude_level != ALL_EXCLUDES)
+       if (filter_level != ALL_FILTERS)
                return 0;
-       if (exclude_list && check_exclude(exclude_list, fname, is_dir))
-               return 1;
-       if (local_exclude_list
-        && check_exclude(local_exclude_list, fname, is_dir))
+       if (filter_list.head
+           && check_filter(&filter_list, fname, is_dir) < 0)
                return 1;
        return 0;
 }
 
-/* used by the one_file_system code */
-static dev_t filesystem_dev;
-
-static void set_filesystem(char *fname)
-{
-       STRUCT_STAT st;
-       if (link_stat(fname, &st) != 0)
-               return;
-       filesystem_dev = st.st_dev;
-}
-
-
 static int to_wire_mode(mode_t mode)
 {
+#if SUPPORT_LINKS
        if (S_ISLNK(mode) && (_S_IFLNK != 0120000))
                return (mode & ~(_S_IFMT)) | 0120000;
-       return (int) mode;
+#endif
+       return (int)mode;
 }
 
 static mode_t from_wire_mode(int mode)
 {
        if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000))
                return (mode & ~(_S_IFMT)) | _S_IFLNK;
-       return (mode_t) mode;
+       return (mode_t)mode;
 }
 
 
-static void send_directory(int f, struct file_list *flist, char *dir);
+static void send_directory(int f, struct file_list *flist,
+                          char *fbuf, unsigned int offset);
 
 static char *flist_dir;
+static int flist_dir_len;
 
 
 /**
  * Make sure @p flist is big enough to hold at least @p flist->count
  * entries.
  **/
-static void flist_expand(struct file_list *flist)
+void flist_expand(struct file_list *flist)
 {
-       if (flist->count >= flist->malloced) {
-               void *new_ptr;
+       struct file_struct **new_ptr;
 
-               if (flist->malloced < 1000)
-                       flist->malloced += 1000;
-               else
-                       flist->malloced *= 2;
-
-               if (flist->files) {
-                       new_ptr = realloc_array(flist->files,
-                                               struct file_struct *,
-                                               flist->malloced);
-               } else {
-                       new_ptr = new_array(struct file_struct *,
-                                           flist->malloced);
-               }
+       if (flist->count < flist->malloced)
+               return;
 
-               if (verbose >= 2) {
-                       rprintf(FINFO, "expand file_list to %.0f bytes, did%s move\n",
-                               (double)sizeof(flist->files[0])
-                               * flist->malloced,
-                               (new_ptr == flist->files) ? " not" : "");
-               }
+       if (flist->malloced < FLIST_START)
+               flist->malloced = FLIST_START;
+       else if (flist->malloced >= FLIST_LINEAR)
+               flist->malloced += FLIST_LINEAR;
+       else
+               flist->malloced *= 2;
+
+       /*
+        * In case count jumped or we are starting the list
+        * with a known size just set it.
+        */
+       if (flist->malloced < flist->count)
+               flist->malloced = flist->count;
+
+       new_ptr = realloc_array(flist->files, struct file_struct *,
+                               flist->malloced);
+
+       if (verbose >= 2 && flist->malloced != FLIST_START) {
+               rprintf(FINFO, "[%s] expand file_list to %.0f bytes, did%s move\n",
+                   who_am_i(),
+                   (double)sizeof flist->files[0] * flist->malloced,
+                   (new_ptr == flist->files) ? " not" : "");
+       }
 
-               flist->files = (struct file_struct **) new_ptr;
+       flist->files = new_ptr;
 
-               if (!flist->files)
-                       out_of_memory("flist_expand");
-       }
+       if (!flist->files)
+               out_of_memory("flist_expand");
 }
 
 void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
@@ -358,12 +323,13 @@ void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
        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 int64 dev;
+       static dev_t rdev;
+       static uint32 rdev_major;
        static uid_t uid;
        static gid_t gid;
        static char lastname[MAXPATHLEN];
-       char *fname, fbuf[MAXPATHLEN];
+       char fname[MAXPATHLEN];
        int l1, l2;
 
        if (f == -1)
@@ -372,7 +338,8 @@ void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
        if (!file) {
                write_byte(f, 0);
                modtime = 0, mode = 0;
-               rdev = 0, dev = 0;
+               dev = 0, rdev = makedev(0, 0);
+               rdev_major = 0;
                uid = 0, gid = 0;
                *lastname = '\0';
                return;
@@ -380,125 +347,141 @@ void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
 
        io_write_phase = "send_file_entry";
 
-       fname = f_name_to(file, fbuf, sizeof fbuf);
+       f_name_to(file, fname);
 
        flags = base_flags;
 
        if (file->mode == mode)
-               flags |= SAME_MODE;
+               flags |= XMIT_SAME_MODE;
        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
+                               if (file->u.rdev == rdev)
+                                       flags |= XMIT_SAME_RDEV_pre28;
+                               else
                                        rdev = file->u.rdev;
                        } else
-                               rdev = 0;
+                               rdev = makedev(0, 0);
                } else if (IS_DEVICE(mode)) {
-                       if ((file->u.rdev & ~0xFF) == rdev)
-                               flags |= SAME_HIGH_RDEV;
+                       rdev = file->u.rdev;
+                       if ((uint32)major(rdev) == rdev_major)
+                               flags |= XMIT_SAME_RDEV_MAJOR;
                        else
-                               rdev = file->u.rdev & ~0xFF;
+                               rdev_major = major(rdev);
+                       if ((uint32)minor(rdev) <= 0xFFu)
+                               flags |= XMIT_RDEV_MINOR_IS_SMALL;
                }
        }
        if (file->uid == uid)
-               flags |= SAME_UID;
+               flags |= XMIT_SAME_UID;
        else
                uid = file->uid;
        if (file->gid == gid)
-               flags |= SAME_GID;
+               flags |= XMIT_SAME_GID;
        else
                gid = file->gid;
        if (file->modtime == modtime)
-               flags |= SAME_TIME;
+               flags |= XMIT_SAME_TIME;
        else
                modtime = file->modtime;
+
+#if SUPPORT_HARD_LINKS
        if (file->link_u.idev) {
                if (file->F_DEV == dev) {
                        if (protocol_version >= 28)
-                               flags |= SAME_DEV;
+                               flags |= XMIT_SAME_DEV;
                } else
                        dev = file->F_DEV;
-               flags |= HAS_INODE_DATA;
+               flags |= XMIT_HAS_IDEV_DATA;
        }
+#endif
 
        for (l1 = 0;
-            lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
-            l1++) {}
-       l2 = strlen(fname) - l1;
+           lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
+           l1++) {}
+       l2 = strlen(fname+l1);
 
        if (l1 > 0)
-               flags |= SAME_NAME;
+               flags |= XMIT_SAME_NAME;
        if (l2 > 255)
-               flags |= LONG_NAME;
+               flags |= XMIT_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(mode))
-               flags |= FLAG_DELETE; /* NOTE: no meaning for non-dir */
+       /* We must make sure we don't send a zero flag byte or the
+        * other end will terminate the flist transfer.  Note that
+        * the use of XMIT_DEL_START on a non-dir has no meaning, so
+        * it's harmless way to add a bit to the first flag byte. */
        if (protocol_version >= 28) {
-               if ((flags & 0xFF00) || flags == 0) {
-                       flags |= EXTENDED_FLAGS;
+               if (!flags && !S_ISDIR(mode))
+                       flags |= XMIT_DEL_START;
+               if ((flags & 0xFF00) || !flags) {
+                       flags |= XMIT_EXTENDED_FLAGS;
                        write_byte(f, flags);
                        write_byte(f, flags >> 8);
                } else
                        write_byte(f, flags);
        } else {
-               if (flags == 0)
-                       flags |= LONG_NAME;
+               if (!(flags & 0xFF) && !S_ISDIR(mode))
+                       flags |= XMIT_DEL_START;
+               if (!(flags & 0xFF))
+                       flags |= XMIT_LONG_NAME;
                write_byte(f, flags);
        }
-       if (flags & SAME_NAME)
+       if (flags & XMIT_SAME_NAME)
                write_byte(f, l1);
-       if (flags & LONG_NAME)
+       if (flags & XMIT_LONG_NAME)
                write_int(f, l2);
        else
                write_byte(f, l2);
        write_buf(f, fname + l1, l2);
 
        write_longint(f, file->length);
-       if (!(flags & SAME_TIME))
+       if (!(flags & XMIT_SAME_TIME))
                write_int(f, modtime);
-       if (!(flags & SAME_MODE))
+       if (!(flags & XMIT_SAME_MODE))
                write_int(f, to_wire_mode(mode));
-       if (preserve_uid && !(flags & SAME_UID)) {
-               add_uid(uid);
+       if (preserve_uid && !(flags & XMIT_SAME_UID)) {
+               if (!numeric_ids)
+                       add_uid(uid);
                write_int(f, uid);
        }
-       if (preserve_gid && !(flags & SAME_GID)) {
-               add_gid(gid);
+       if (preserve_gid && !(flags & XMIT_SAME_GID)) {
+               if (!numeric_ids)
+                       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 (protocol_version < 28) {
+                       if (!(flags & XMIT_SAME_RDEV_pre28))
+                               write_int(f, (int)rdev);
+               } else {
+                       if (!(flags & XMIT_SAME_RDEV_MAJOR))
+                               write_int(f, major(rdev));
+                       if (flags & XMIT_RDEV_MINOR_IS_SMALL)
+                               write_byte(f, minor(rdev));
+                       else
+                               write_int(f, minor(rdev));
+               }
        }
 
 #if SUPPORT_LINKS
        if (preserve_links && S_ISLNK(mode)) {
-               write_int(f, strlen(file->u.link));
-               write_buf(f, file->u.link, strlen(file->u.link));
+               int len = strlen(file->u.link);
+               write_int(f, len);
+               write_buf(f, file->u.link, len);
        }
 #endif
 
 #if SUPPORT_HARD_LINKS
-       if (flags & HAS_INODE_DATA) {
+       if (flags & XMIT_HAS_IDEV_DATA) {
                if (protocol_version < 26) {
                        /* 32-bit dev_t and ino_t */
                        write_int(f, dev);
                        write_int(f, file->F_INODE);
                } else {
                        /* 64-bit dev_t and ino_t */
-                       if (!(flags & SAME_DEV))
+                       if (!(flags & XMIT_SAME_DEV))
                                write_longint(f, dev);
                        write_longint(f, file->F_INODE);
                }
@@ -515,55 +498,58 @@ void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
                } else
                        sum = NULL;
                if (sum) {
-                       write_buf(f, sum, protocol_version < 21? 2
-                                                       : MD4_SUM_LENGTH);
+                       write_buf(f, sum,
+                           protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
                }
        }
 
        strlcpy(lastname, fname, MAXPATHLEN);
-       lastname[MAXPATHLEN - 1] = 0;
 
        io_write_phase = "unknown";
 }
 
 
 
-void receive_file_entry(struct file_struct **fptr, unsigned short flags, int f)
+void receive_file_entry(struct file_struct **fptr, unsigned short flags,
+                       struct file_list *flist, int f)
 {
        static time_t modtime;
        static mode_t mode;
-       static DEV64_T rdev;    /* just high bytes in p28 onward */
-       static DEV64_T dev;
+       static int64 dev;
+       static dev_t rdev;
+       static uint32 rdev_major;
        static uid_t uid;
        static gid_t gid;
-       static char lastname[MAXPATHLEN];
+       static char lastname[MAXPATHLEN], *lastdir;
+       static int lastdir_depth, lastdir_len = -1;
+       static unsigned int del_hier_name_len = 0;
+       static int in_del_hier = 0;
        char thisname[MAXPATHLEN];
        unsigned int l1 = 0, l2 = 0;
-       char *p;
+       int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
+       OFF_T file_length;
+       char *basename, *dirname, *bp;
        struct file_struct *file;
 
        if (!fptr) {
                modtime = 0, mode = 0;
-               rdev = 0, dev = 0;
+               dev = 0, rdev = makedev(0, 0);
+               rdev_major = 0;
                uid = 0, gid = 0;
                *lastname = '\0';
+               lastdir_len = -1;
+               in_del_hier = 0;
                return;
        }
 
-       if (flags & SAME_NAME)
+       if (flags & XMIT_SAME_NAME)
                l1 = read_byte(f);
 
-       if (flags & LONG_NAME)
+       if (flags & XMIT_LONG_NAME)
                l2 = read_int(f);
        else
                l2 = read_byte(f);
 
-       file = new(struct file_struct);
-       if (!file)
-               out_of_memory("receive_file_entry");
-       memset((char *) file, 0, sizeof(*file));
-       (*fptr) = file;
-
        if (l2 >= MAXPATHLEN - l1) {
                rprintf(FERROR,
                        "overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
@@ -576,117 +562,168 @@ void receive_file_entry(struct file_struct **fptr, unsigned short flags, int f)
        thisname[l1 + l2] = 0;
 
        strlcpy(lastname, thisname, MAXPATHLEN);
-       lastname[MAXPATHLEN - 1] = 0;
 
-       clean_fname(thisname);
-
-       if (sanitize_paths) {
-               sanitize_path(thisname, NULL);
-       }
+       clean_fname(thisname, 0);
 
-       if ((p = strrchr(thisname, '/'))) {
-               static char *lastdir;
-               *p = 0;
-               if (lastdir && strcmp(thisname, lastdir) == 0)
-                       file->dirname = lastdir;
-               else {
-                       file->dirname = strdup(thisname);
-                       lastdir = file->dirname;
-               }
-               file->basename = strdup(p + 1);
+       if (sanitize_paths)
+               sanitize_path(thisname, thisname, "", 0);
+
+       if ((basename = strrchr(thisname, '/')) != NULL) {
+               dirname_len = ++basename - thisname; /* counts future '\0' */
+               if (lastdir_len == dirname_len - 1
+                   && strncmp(thisname, lastdir, lastdir_len) == 0) {
+                       dirname = lastdir;
+                       dirname_len = 0; /* indicates no copy is needed */
+               } else
+                       dirname = thisname;
        } else {
-               file->dirname = NULL;
-               file->basename = strdup(thisname);
+               basename = thisname;
+               dirname = NULL;
+               dirname_len = 0;
        }
+       basename_len = strlen(basename) + 1; /* count the '\0' */
 
-       if (!file->basename)
-               out_of_memory("receive_file_entry 1");
-
-       file->flags = flags;
-       file->length = read_longint(f);
-       if (!(flags & SAME_TIME))
+       file_length = read_longint(f);
+       if (!(flags & XMIT_SAME_TIME))
                modtime = (time_t)read_int(f);
-       file->modtime = modtime;
-       if (!(flags & SAME_MODE))
+       if (!(flags & XMIT_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_uid && !(flags & XMIT_SAME_UID))
+               uid = (uid_t)read_int(f);
+       if (preserve_gid && !(flags & XMIT_SAME_GID))
+               gid = (gid_t)read_int(f);
+
        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;
+                               if (!(flags & XMIT_SAME_RDEV_pre28))
+                                       rdev = (dev_t)read_int(f);
                        } else
-                               rdev = 0;
+                               rdev = makedev(0, 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);
+                       uint32 rdev_minor;
+                       if (!(flags & XMIT_SAME_RDEV_MAJOR))
+                               rdev_major = read_int(f);
+                       if (flags & XMIT_RDEV_MINOR_IS_SMALL)
+                               rdev_minor = read_byte(f);
+                       else
+                               rdev_minor = read_int(f);
+                       rdev = makedev(rdev_major, rdev_minor);
                }
        }
 
+#if SUPPORT_LINKS
        if (preserve_links && S_ISLNK(mode)) {
-               int l = read_int(f);
-               if (l < 0) {
-                       rprintf(FERROR, "overflow: l=%d\n", l);
+               linkname_len = read_int(f) + 1; /* count the '\0' */
+               if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
+                       rprintf(FERROR, "overflow: linkname_len=%d\n",
+                               linkname_len - 1);
                        overflow("receive_file_entry");
                }
-               if (!(file->u.link = new_array(char, l + 1)))
-                       out_of_memory("receive_file_entry 2");
-               read_sbuf(f, file->u.link, l);
+       }
+       else
+#endif
+               linkname_len = 0;
+
+       sum_len = always_checksum && S_ISREG(mode) ? MD4_SUM_LENGTH : 0;
+
+       alloc_len = file_struct_len + dirname_len + basename_len
+                 + linkname_len + sum_len;
+       bp = pool_alloc(flist->file_pool, alloc_len, "receive_file_entry");
+
+       file = *fptr = (struct file_struct *)bp;
+       memset(bp, 0, file_struct_len);
+       bp += file_struct_len;
+
+       file->flags = 0;
+       file->modtime = modtime;
+       file->length = file_length;
+       file->mode = mode;
+       file->uid = uid;
+       file->gid = gid;
+
+       if (S_ISDIR(mode)) {
+               if (flags & XMIT_DEL_START) {
+                       in_del_hier = 1;
+                       del_hier_name_len = l1 + l2;
+                       file->flags |= FLAG_DEL_START;
+               } else if (delete_during && in_del_hier) {
+                       if (!relative_paths || (l1 >= del_hier_name_len
+                           && thisname[del_hier_name_len] == '/'))
+                               file->flags |= FLAG_DEL_START;
+                       else
+                               in_del_hier = 0;
+               }
+       }
+
+       if (dirname_len) {
+               file->dirname = lastdir = bp;
+               lastdir_len = dirname_len - 1;
+               memcpy(bp, dirname, dirname_len - 1);
+               bp += dirname_len;
+               bp[-1] = '\0';
+               if (sanitize_paths)
+                       lastdir_depth = count_dir_elements(lastdir);
+       } else if (dirname)
+               file->dirname = dirname;
+
+       file->basename = bp;
+       memcpy(bp, basename, basename_len);
+       bp += basename_len;
+
+       if (preserve_devices && IS_DEVICE(mode))
+               file->u.rdev = rdev;
+
+#if SUPPORT_LINKS
+       if (linkname_len) {
+               file->u.link = bp;
+               read_sbuf(f, bp, linkname_len - 1);
                if (sanitize_paths)
-                       sanitize_path(file->u.link, file->dirname);
+                       sanitize_path(bp, bp, "", lastdir_depth);
+               bp += linkname_len;
        }
+#endif
+
 #if SUPPORT_HARD_LINKS
        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");
+               flags |= XMIT_HAS_IDEV_DATA;
+       if (flags & XMIT_HAS_IDEV_DATA) {
+               int64 inode;
                if (protocol_version < 26) {
                        dev = read_int(f);
-                       file->F_INODE = read_int(f);
+                       inode = read_int(f);
                } else {
-                       if (!(flags & SAME_DEV))
+                       if (!(flags & XMIT_SAME_DEV))
                                dev = read_longint(f);
-                       file->F_INODE = read_longint(f);
+                       inode = read_longint(f);
+               }
+               if (flist->hlink_pool) {
+                       file->link_u.idev = pool_talloc(flist->hlink_pool,
+                           struct idev, 1, "inode_table");
+                       file->F_INODE = inode;
+                       file->F_DEV = dev;
                }
-               file->F_DEV = dev;
        }
 #endif
 
        if (always_checksum) {
                char *sum;
-               if (S_ISREG(mode)) {
-                       sum = file->u.sum = new_array(char, MD4_SUM_LENGTH);
-                       if (!sum)
-                               out_of_memory("md4 sum");
+               if (sum_len) {
+                       file->u.sum = sum = bp;
+                       /*bp += sum_len;*/
                } 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);
+                       read_buf(f, sum,
+                           protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
                }
        }
 
        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 */
                file->mode &= ~orig_umask;
@@ -694,36 +731,6 @@ void receive_file_entry(struct file_struct **fptr, unsigned short flags, int f)
 }
 
 
-/* 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);
-}
-
-#define STRDUP(ap, p)  (ap ? string_area_strdup(ap, p) : strdup(p))
-/* IRIX cc cares that the operands to the ternary have the same type. */
-#define MALLOC(ap, i)  (ap ? (void*) string_area_malloc(ap, i) : malloc(i))
-
 /**
  * Create a file_struct for a named file by reading its stat()
  * information and performing extensive checks against global
@@ -739,128 +746,216 @@ static int skip_filesystem(char *fname, STRUCT_STAT * st)
  * statting directories if we're not recursing, but this is not a very
  * important case.  Some systems may not have d_type.
  **/
-struct file_struct *make_file(char *fname, struct string_area **ap,
-                             int exclude_level)
+struct file_struct *make_file(char *fname, struct file_list *flist,
+                             int filter_level)
 {
+       static char *lastdir;
+       static int lastdir_len = -1;
        struct file_struct *file;
        STRUCT_STAT st;
        char sum[SUM_LENGTH];
-       char *p;
-       char cleaned_name[MAXPATHLEN];
-       char linkbuf[MAXPATHLEN];
+       char thisname[MAXPATHLEN];
+       char linkname[MAXPATHLEN];
+       int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
+       char *basename, *dirname, *bp;
+       unsigned short flags = 0;
 
-       strlcpy(cleaned_name, fname, MAXPATHLEN);
-       cleaned_name[MAXPATHLEN - 1] = 0;
-       clean_fname(cleaned_name);
+       if (!flist || !flist->count)    /* Ignore lastdir when invalid. */
+               lastdir_len = -1;
+
+       if (strlcpy(thisname, fname, sizeof thisname)
+           >= sizeof thisname - flist_dir_len) {
+               rprintf(FINFO, "skipping overly long name: %s\n", fname);
+               return NULL;
+       }
+       clean_fname(thisname, 0);
        if (sanitize_paths)
-               sanitize_path(cleaned_name, NULL);
-       fname = cleaned_name;
+               sanitize_path(thisname, thisname, "", 0);
 
        memset(sum, 0, SUM_LENGTH);
 
-       if (readlink_stat(fname, &st, linkbuf) != 0) {
+       if (readlink_stat(thisname, &st, linkname) != 0) {
                int save_errno = errno;
-               if (errno == ENOENT && exclude_level != NO_EXCLUDES) {
-                       /* either symlink pointing nowhere or file that
-                        * was removed during rsync run; see if excluded
-                        * before reporting an error */
-                       if (check_exclude_file(fname, 0, exclude_level)) {
-                               /* file is excluded anyway, ignore silently */
-                               return NULL;
+               /* See if file is excluded before reporting an error. */
+               if (filter_level != NO_FILTERS
+                   && is_excluded(thisname, 0, filter_level))
+                       return NULL;
+               if (save_errno == ENOENT) {
+#if SUPPORT_LINKS
+                       /* Avoid "vanished" error if symlink points nowhere. */
+                       if (copy_links && do_lstat(thisname, &st) == 0
+                           && S_ISLNK(st.st_mode)) {
+                               io_error |= IOERR_GENERAL;
+                               rprintf(FERROR, "symlink has no referent: %s\n",
+                                       full_fname(thisname));
+                       } else
+#endif
+                       {
+                               enum logcode c = am_daemon && protocol_version < 28
+                                   ? FERROR : FINFO;
+                               io_error |= IOERR_VANISHED;
+                               rprintf(c, "file has vanished: %s\n",
+                                       full_fname(thisname));
                        }
+               } else {
+                       io_error |= IOERR_GENERAL;
+                       rsyserr(FERROR, save_errno, "readlink %s failed",
+                               full_fname(thisname));
                }
-               io_error |= IOERR_GENERAL;
-               rprintf(FERROR, "readlink %s failed: %s\n",
-                       full_fname(fname), strerror(save_errno));
                return NULL;
        }
 
-       /* backup.c calls us with exclude_level set to NO_EXCLUDES. */
-       if (exclude_level == NO_EXCLUDES)
-               goto skip_excludes;
+       /* backup.c calls us with filter_level set to NO_FILTERS. */
+       if (filter_level == NO_FILTERS)
+               goto skip_filters;
 
-       if (S_ISDIR(st.st_mode) && !recurse && !files_from) {
-               rprintf(FINFO, "skipping directory %s\n", fname);
+       if (S_ISDIR(st.st_mode) && !xfer_dirs) {
+               rprintf(FINFO, "skipping directory %s\n", thisname);
                return NULL;
        }
 
-       if (one_file_system && st.st_dev != filesystem_dev) {
-               if (skip_filesystem(fname, &st))
-                       return NULL;
-       }
+       /* We only care about directories because we need to avoid recursing
+        * into a mount-point directory, not to avoid copying a symlinked
+        * file if -L (or similar) was specified. */
+       if (one_file_system && st.st_dev != filesystem_dev
+           && S_ISDIR(st.st_mode))
+               flags |= FLAG_MOUNT_POINT;
 
-       if (check_exclude_file(fname, S_ISDIR(st.st_mode) != 0, exclude_level))
+       if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level))
                return NULL;
 
-       if (lp_ignore_nonreadable(module_id) && access(fname, R_OK) != 0)
-               return NULL;
+       if (lp_ignore_nonreadable(module_id)) {
+#if SUPPORT_LINKS
+               if (!S_ISLNK(st.st_mode))
+#endif
+                       if (access(thisname, R_OK) != 0)
+                               return NULL;
+       }
 
-      skip_excludes:
+skip_filters:
 
-       if (verbose > 2)
-               rprintf(FINFO, "make_file(%s,*,%d)\n", fname, exclude_level);
+       if (verbose > 2) {
+               rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
+                       who_am_i(), thisname, filter_level);
+       }
 
-       file = new(struct file_struct);
-       if (!file)
-               out_of_memory("make_file");
-       memset((char *) file, 0, sizeof(*file));
-
-       if ((p = strrchr(fname, '/'))) {
-               static char *lastdir;
-               *p = 0;
-               if (lastdir && strcmp(fname, lastdir) == 0)
-                       file->dirname = lastdir;
-               else {
-                       file->dirname = strdup(fname);
-                       lastdir = file->dirname;
-               }
-               file->basename = STRDUP(ap, p + 1);
-               *p = '/';
+       if ((basename = strrchr(thisname, '/')) != NULL) {
+               dirname_len = ++basename - thisname; /* counts future '\0' */
+               if (lastdir_len == dirname_len - 1
+                   && strncmp(thisname, lastdir, lastdir_len) == 0) {
+                       dirname = lastdir;
+                       dirname_len = 0; /* indicates no copy is needed */
+               } else
+                       dirname = thisname;
        } else {
-               file->dirname = NULL;
-               file->basename = STRDUP(ap, fname);
+               basename = thisname;
+               dirname = NULL;
+               dirname_len = 0;
        }
+       basename_len = strlen(basename) + 1; /* count the '\0' */
 
+#if SUPPORT_LINKS
+       linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
+#else
+       linkname_len = 0;
+#endif
+
+       sum_len = always_checksum && S_ISREG(st.st_mode) ? MD4_SUM_LENGTH : 0;
+
+       alloc_len = file_struct_len + dirname_len + basename_len
+           + linkname_len + sum_len;
+       if (flist) {
+               bp = pool_alloc(flist->file_pool, alloc_len,
+                   "receive_file_entry");
+       } else {
+               if (!(bp = new_array(char, alloc_len)))
+                       out_of_memory("receive_file_entry");
+       }
+
+       file = (struct file_struct *)bp;
+       memset(bp, 0, file_struct_len);
+       bp += file_struct_len;
+
+       file->flags = flags;
        file->modtime = st.st_mtime;
        file->length = st.st_size;
        file->mode = st.st_mode;
        file->uid = st.st_uid;
        file->gid = st.st_gid;
-       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;
+
+#if SUPPORT_HARD_LINKS
+       if (flist && flist->hlink_pool) {
+               if (protocol_version < 28) {
+                       if (S_ISREG(st.st_mode))
+                               file->link_u.idev = pool_talloc(
+                                   flist->hlink_pool, struct idev, 1,
+                                   "inode_table");
+               } else {
+                       if (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
+                               file->link_u.idev = pool_talloc(
+                                   flist->hlink_pool, struct idev, 1,
+                                   "inode_table");
                }
        }
-#ifdef HAVE_STRUCT_STAT_ST_RDEV
-       if (IS_DEVICE(st.st_mode))
+       if (file->link_u.idev) {
+               file->F_DEV = st.st_dev;
+               file->F_INODE = st.st_ino;
+       }
+#endif
+
+       if (dirname_len) {
+               file->dirname = lastdir = bp;
+               lastdir_len = dirname_len - 1;
+               memcpy(bp, dirname, dirname_len - 1);
+               bp += dirname_len;
+               bp[-1] = '\0';
+       } else if (dirname)
+               file->dirname = dirname;
+
+       file->basename = bp;
+       memcpy(bp, basename, basename_len);
+       bp += basename_len;
+
+#if HAVE_STRUCT_STAT_ST_RDEV
+       if (preserve_devices && IS_DEVICE(st.st_mode))
                file->u.rdev = st.st_rdev;
 #endif
 
 #if SUPPORT_LINKS
-       if (S_ISLNK(st.st_mode))
-               file->u.link = STRDUP(ap, linkbuf);
+       if (linkname_len) {
+               file->u.link = bp;
+               memcpy(bp, linkname, linkname_len);
+               bp += linkname_len;
+       }
 #endif
 
-       if (always_checksum && S_ISREG(st.st_mode)) {
-               if (!(file->u.sum = (char*)MALLOC(ap, MD4_SUM_LENGTH)))
-                       out_of_memory("md4 sum");
-               file_checksum(fname, file->u.sum, st.st_size);
+       if (sum_len) {
+               file->u.sum = bp;
+               file_checksum(thisname, bp, st.st_size);
+               /*bp += sum_len;*/
        }
 
-       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;
+       file->basedir = flist_dir;
+
+       /* This code is only used by the receiver when it is building
+        * a list of files for a delete pass. */
+       if (keep_dirlinks && linkname_len && flist) {
+               STRUCT_STAT st2;
+               int i = flist_find(received_flist, file);
+               if (i >= 0 && S_ISDIR(received_flist->files[i]->mode)
+                   && do_stat(thisname, &st2) == 0 && S_ISDIR(st2.st_mode)) {
+                       file->modtime = st2.st_mtime;
+                       file->length = st2.st_size;
+                       file->mode = st2.st_mode;
+                       file->uid = st2.st_uid;
+                       file->gid = st2.st_gid;
+                       file->u.link = NULL;
+                       if (file->link_u.idev) {
+                               pool_free(flist->hlink_pool, 0, file->link_u.idev);
+                               file->link_u.idev = NULL;
+                       }
                }
-       } else
-               file->basedir = NULL;
+       }
 
        if (!S_ISDIR(st.st_mode))
                stats.total_size += st.st_size;
@@ -874,12 +969,10 @@ void send_file_name(int f, struct file_list *flist, char *fname,
 {
        struct file_struct *file;
        char fbuf[MAXPATHLEN];
-       extern int delete_excluded;
 
        /* f is set to -1 when calculating deletion file list */
-       file = make_file(fname, &flist->string_area,
-                        f == -1 && delete_excluded? SERVER_EXCLUDES
-                                                  : ALL_EXCLUDES);
+       file = make_file(fname, flist,
+           f == -1 && delete_excluded? SERVER_FILTERS : ALL_FILTERS);
 
        if (!file)
                return;
@@ -888,103 +981,91 @@ void send_file_name(int f, struct file_list *flist, char *fname,
 
        flist_expand(flist);
 
-       if (write_batch)
-               file->flags |= FLAG_DELETE;
-
        if (file->basename[0]) {
                flist->files[flist->count++] = file;
                send_file_entry(file, f, base_flags);
        }
 
-       if (S_ISDIR(file->mode) && recursive) {
-               struct exclude_struct **last_exclude_list =
-                   local_exclude_list;
-               send_directory(f, flist, f_name_to(file, fbuf, sizeof fbuf));
-               local_exclude_list = last_exclude_list;
-               return;
+       if (recursive && S_ISDIR(file->mode)
+           && !(file->flags & FLAG_MOUNT_POINT) && f_name_to(file, fbuf)) {
+               void *save_filters;
+               unsigned int len = strlen(fbuf);
+               if (len > 1 && fbuf[len-1] == '/')
+                       fbuf[--len] = '\0';
+               if (len >= MAXPATHLEN - 1) {
+                       io_error |= IOERR_GENERAL;
+                       rprintf(FERROR, "skipping long-named directory: %s\n",
+                               full_fname(fbuf));
+                       return;
+               }
+               save_filters = push_local_filters(fbuf, len);
+               send_directory(f, flist, fbuf, len);
+               pop_local_filters(save_filters);
        }
 }
 
 
-static void send_directory(int f, struct file_list *flist, char *dir)
+/* Note that the "recurse" value either contains -1, for infinite recursion,
+ * or a number >= 0 indicating how many levels of recursion we will allow. */
+static void send_directory(int f, struct file_list *flist,
+                          char *fbuf, unsigned int len)
 {
-       DIR *d;
        struct dirent *di;
-       char fname[MAXPATHLEN];
-       int l;
        char *p;
+       DIR *d;
 
-       d = opendir(dir);
-       if (!d) {
+       if (!(d = opendir(fbuf))) {
                io_error |= IOERR_GENERAL;
-               rprintf(FERROR, "opendir %s failed: %s\n",
-                       full_fname(dir), strerror(errno));
+               rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
                return;
        }
 
-       strlcpy(fname, dir, MAXPATHLEN);
-       l = strlen(fname);
-       if (fname[l - 1] != '/') {
-               if (l == 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 = fname + strlen(fname);
-
-       local_exclude_list = NULL;
-
-       if (cvs_exclude) {
-               if (strlen(fname) + strlen(".cvsignore") <= MAXPATHLEN - 1) {
-                       strcpy(p, ".cvsignore");
-                       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));
-               }
-       }
+       p = fbuf + len;
+       if (len != 1 || *fbuf != '/')
+               *p++ = '/';
+       *p = '\0';
 
        for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
                char *dname = d_name(di);
                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 - len) < MAXPATHLEN - len) {
+                       int do_subdirs = recurse >= 1 ? recurse-- : recurse;
+                       send_file_name(f, flist, fbuf, do_subdirs, 0);
+               } else {
+                       io_error |= IOERR_GENERAL;
+                       rprintf(FINFO,
+                               "cannot send long-named file %s\n",
+                               full_fname(fbuf));
+               }
        }
        if (errno) {
                io_error |= IOERR_GENERAL;
-               rprintf(FERROR, "readdir(%s): (%d) %s\n",
-                   dir, errno, strerror(errno));
+               *p = '\0';
+               rsyserr(FERROR, errno, "readdir(%s)", fbuf);
        }
 
-       if (local_exclude_list)
-               free_exclude_list(&local_exclude_list); /* Zeros pointer too */
-
        closedir(d);
 }
 
 
-/**
- * The delete_files() function in receiver.c sets f to -1 so that we just
- * construct the file list in memory without sending it over the wire.  It
- * also has the side-effect of ignoring user-excludes if delete_excluded
- * is set (so that the delete list includes user-excluded files).
- **/
+/* This function is normally called by the sender, but the receiving side
+ * also uses it to construct one or more file lists if one of the --delete
+ * options have been specified.  The delete_files() function sets f to -1
+ * so that we just construct the file list in memory without sending it
+ * over the wire.  It also has the side-effect of ignoring user-excludes if
+ * delete_excluded is set (so that the delete list includes user-excluded
+ * files). */
 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;
+       BOOL need_first_push = True;
+       struct timeval start_tv, end_tv;
        int64 start_write;
        int use_ff_fd = 0;
 
@@ -992,63 +1073,85 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                start_filelist_progress("building file list");
 
        start_write = stats.total_written;
+       gettimeofday(&start_tv, NULL);
 
-       flist = flist_new();
+       flist = flist_new(f == -1 ? WITHOUT_HLINK : WITH_HLINK,
+                         "send_file_list");
 
        if (f != -1) {
-               io_start_buffering_out(f);
+               io_start_buffering_out();
                if (filesfrom_fd >= 0) {
-                       if (argv[0] && !push_dir(argv[0], 0)) {
-                               rprintf(FERROR, "push_dir %s failed: %s\n",
-                                       full_fname(argv[0]), strerror(errno));
+                       if (argv[0] && !push_dir(argv[0])) {
+                               rsyserr(FERROR, errno, "push_dir %s failed",
+                                       full_fname(argv[0]));
                                exit_cleanup(RERR_FILESELECT);
                        }
                        use_ff_fd = 1;
+                       if (curr_dir_len < MAXPATHLEN - 1) {
+                               push_local_filters(curr_dir, curr_dir_len);
+                               need_first_push = False;
+                       }
                }
        }
 
        while (1) {
                char fname2[MAXPATHLEN];
                char *fname = fname2;
+               int do_subdirs;
 
                if (use_ff_fd) {
                        if (read_filesfrom_line(filesfrom_fd, fname) == 0)
                                break;
-                       sanitize_path(fname, NULL);
+                       sanitize_path(fname, fname, "", 0);
                } else {
                        if (argc-- == 0)
                                break;
                        strlcpy(fname, *argv++, MAXPATHLEN);
                        if (sanitize_paths)
-                               sanitize_path(fname, NULL);
+                               sanitize_path(fname, fname, "", 0);
                }
 
                l = strlen(fname);
-               if (fname[l - 1] == '/') {
+               if (!l || fname[l - 1] == '/') {
                        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 (fname[l-1] == '.' && (l == 1 || fname[l-2] == '/')) {
+                       if (!recurse && xfer_dirs)
+                               recurse = 1; /* allow one level */
+               } else if (recurse > 0)
+                       recurse = 0;
+
+               if (need_first_push) {
+                       if ((p = strrchr(fname, '/')) != NULL) {
+                               if (*++p && strcmp(p, ".") != 0)
+                                       push_local_filters(fname, p - fname);
+                       } else if (strcmp(fname, ".") != 0)
+                               push_local_filters(fname, 0);
+                       need_first_push = False;
+               }
 
-               if (link_stat(fname, &st) != 0) {
+               if (link_stat(fname, &st, keep_dirlinks) != 0) {
                        if (f != -1) {
                                io_error |= IOERR_GENERAL;
-                               rprintf(FERROR, "link_stat %s failed: %s\n",
-                                       full_fname(fname), strerror(errno));
+                               rsyserr(FERROR, errno, "link_stat %s failed",
+                                       full_fname(fname));
                        }
                        continue;
                }
 
-               if (S_ISDIR(st.st_mode) && !recurse && !files_from) {
+               if (S_ISDIR(st.st_mode) && !xfer_dirs) {
                        rprintf(FINFO, "skipping directory %s\n", fname);
                        continue;
                }
 
                dir = NULL;
-               olddir = NULL;
+               olddir[0] = '\0';
 
                if (!relative_paths) {
                        p = strrchr(fname, '/');
@@ -1074,21 +1177,17 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                        }
                        *p = '/';
                        if (fn != p || (*lp && *lp != '/')) {
-                               int copy_links_saved = copy_links;
-                               int recurse_saved = recurse;
+                               int save_copy_links = copy_links;
+                               int save_xfer_dirs = xfer_dirs;
                                copy_links = copy_unsafe_links;
-                               /* set recurse to 1 to prevent make_file
-                                * from ignoring directory, but still
-                                * turn off the recursive parameter to
-                                * send_file_name */
-                               recurse = 1;
+                               xfer_dirs = 1;
                                while ((slash = strchr(slash+1, '/')) != 0) {
                                        *slash = 0;
                                        send_file_name(f, flist, fname, 0, 0);
                                        *slash = '/';
                                }
-                               copy_links = copy_links_saved;
-                               recurse = recurse_saved;
+                               copy_links = save_copy_links;
+                               xfer_dirs = save_xfer_dirs;
                                *p = 0;
                                strlcpy(lastpath, fname, sizeof lastpath);
                                *p = '/';
@@ -1099,38 +1198,67 @@ 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) {
+                       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));
+                               rsyserr(FERROR, errno, "push_dir %s failed",
+                                       full_fname(dir));
                                continue;
                        }
 
-                       flist_dir = dir;
+                       if (lastdir && strcmp(lastdir, dir) == 0) {
+                               flist_dir = lastdir;
+                               flist_dir_len = lastdir_len;
+                       } else {
+                               flist_dir = lastdir = strdup(dir);
+                               flist_dir_len = lastdir_len = strlen(dir);
+                       }
                }
 
                if (one_file_system)
-                       set_filesystem(fname);
+                       filesystem_dev = st.st_dev;
 
-               send_file_name(f, flist, fname, recurse, FLAG_DELETE);
+               do_subdirs = recurse >= 1 ? recurse-- : recurse;
+               send_file_name(f, flist, fname, do_subdirs, XMIT_DEL_START);
 
-               if (olddir != NULL) {
+               if (olddir[0]) {
                        flist_dir = NULL;
-                       if (pop_dir(olddir) != 0) {
-                               rprintf(FERROR, "pop_dir %s failed: %s\n",
-                                       full_fname(dir), strerror(errno));
+                       flist_dir_len = 0;
+                       if (!pop_dir(olddir)) {
+                               rsyserr(FERROR, errno, "pop_dir %s failed",
+                                       full_fname(dir));
                                exit_cleanup(RERR_FILESELECT);
                        }
                }
        }
 
        if (f != -1) {
+               gettimeofday(&end_tv, NULL);
+               stats.flist_buildtime =
+                   (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
+                        + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
+               if (stats.flist_buildtime == 0)
+                       stats.flist_buildtime = 1;
+               start_tv = end_tv;
+
                send_file_entry(NULL, f, 0);
 
                if (show_filelist_p())
                        finish_filelist_progress(flist);
+
+               gettimeofday(&end_tv, NULL);
+               stats.flist_xfertime =
+                   (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
+                        + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
+       }
+
+       if (flist->hlink_pool) {
+               pool_destroy(flist->hlink_pool);
+               flist->hlink_pool = NULL;
        }
 
        clean_flist(flist, 0, 0);
@@ -1146,10 +1274,11 @@ struct file_list *send_file_list(int f, int argc, char *argv[])
                io_end_buffering();
                stats.flist_size = stats.total_written - start_write;
                stats.num_files = flist->count;
-               if (write_batch)
-                       write_batch_flist_info(flist->count, flist->files);
        }
 
+       if (verbose > 3)
+               output_flist(flist, f < 0 ? "delete" : who_am_i());
+
        if (verbose > 2)
                rprintf(FINFO, "send_file_list done\n");
 
@@ -1162,16 +1291,14 @@ struct file_list *recv_file_list(int f)
        struct file_list *flist;
        unsigned short flags;
        int64 start_read;
-       extern int list_only;
 
        if (show_filelist_p())
                start_filelist_progress("receiving file list");
 
        start_read = stats.total_read;
 
-       flist = new(struct file_list);
-       if (!flist)
-               goto oom;
+       flist = flist_new(WITH_HLINK, "recv_file_list");
+       received_flist = flist;
 
        flist->count = 0;
        flist->malloced = 1000;
@@ -1185,9 +1312,9 @@ struct file_list *recv_file_list(int f)
 
                flist_expand(flist);
 
-               if (protocol_version >= 28 && (flags & EXTENDED_FLAGS))
+               if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
                        flags |= read_byte(f) << 8;
-               receive_file_entry(&flist->files[i], flags, f);
+               receive_file_entry(&flist->files[i], flags, flist, f);
 
                if (S_ISREG(flist->files[i]->mode))
                        stats.total_size += flist->files[i]->length;
@@ -1201,7 +1328,7 @@ struct file_list *recv_file_list(int f)
                                f_name(flist->files[i]));
                }
        }
-       receive_file_entry(NULL, 0, 0); /* Signal that we're done. */
+       receive_file_entry(NULL, 0, NULL, 0); /* Signal that we're done. */
 
        if (verbose > 2)
                rprintf(FINFO, "received %d names\n", flist->count);
@@ -1216,15 +1343,16 @@ struct file_list *recv_file_list(int f)
                 * protocol version 15 */
                recv_uid_list(f, flist);
 
-               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);
-               }
+               /* Recv the io_error flag */
+               if (lp_ignore_errors(module_id) || ignore_errors)
+                       read_int(f);
+               else
+                       io_error |= read_int(f);
        }
 
+       if (verbose > 3)
+               output_flist(flist, who_am_i());
+
        if (list_only) {
                int i;
                for (i = 0; i < flist->count; i++)
@@ -1239,7 +1367,7 @@ struct file_list *recv_file_list(int f)
 
        return flist;
 
-      oom:
+oom:
        out_of_memory("recv_file_list");
        return NULL;            /* not reached */
 }
@@ -1287,44 +1415,43 @@ int flist_find(struct file_list *flist, struct file_struct *f)
        return -1;
 }
 
-
 /*
- * free up one file
+ * Free up any resources a file_struct has allocated
+ * and clear the file.
  */
-void free_file(struct file_struct *file)
+void clear_file(int i, struct file_list *flist)
 {
-       if (!file)
-               return;
-       if (file->basename)
-               free(file->basename);
-       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;
+       if (flist->hlink_pool && flist->files[i]->link_u.idev)
+               pool_free(flist->hlink_pool, 0, flist->files[i]->link_u.idev);
+       memset(flist->files[i], 0, file_struct_len);
 }
 
 
 /*
  * allocate a new file list
  */
-struct file_list *flist_new(void)
+struct file_list *flist_new(int with_hlink, char *msg)
 {
        struct file_list *flist;
 
        flist = new(struct file_list);
        if (!flist)
-               out_of_memory("send_file_list");
+               out_of_memory(msg);
 
-       flist->count = 0;
-       flist->malloced = 0;
-       flist->files = NULL;
+       memset(flist, 0, sizeof (struct file_list));
 
-#if ARENA_SIZE > 0
-       flist->string_area = string_area_new(0);
-#else
-       flist->string_area = NULL;
+       if (!(flist->file_pool = pool_create(FILE_EXTENT, 0,
+           out_of_memory, POOL_INTERN)))
+               out_of_memory(msg);
+
+#if SUPPORT_HARD_LINKS
+       if (with_hlink && preserve_hard_links) {
+               if (!(flist->hlink_pool = pool_create(HLINK_EXTENT,
+                   sizeof (struct idev), out_of_memory, POOL_INTERN)))
+                       out_of_memory(msg);
+       }
 #endif
+
        return flist;
 }
 
@@ -1333,22 +1460,9 @@ struct file_list *flist_new(void)
  */
 void flist_free(struct file_list *flist)
 {
-       int i;
-       for (i = 1; i < flist->count; i++) {
-               if (!flist->string_area)
-                       free_file(flist->files[i]);
-               free(flist->files[i]);
-       }
-       /* FIXME: I don't think we generally need to blank the flist
-        * since it's about to be freed.  This will just cause more
-        * memory traffic.  If you want a freed-memory debugger, you
-        * know where to get it. */
-       memset((char *) flist->files, 0,
-              sizeof(flist->files[0]) * flist->count);
+       pool_destroy(flist->file_pool);
+       pool_destroy(flist->hlink_pool);
        free(flist->files);
-       if (flist->string_area)
-               string_area_free(flist->string_area);
-       memset((char *) flist, 0, sizeof(*flist));
        free(flist);
 }
 
@@ -1365,7 +1479,7 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
                return;
 
        qsort(flist->files, flist->count,
-             sizeof(flist->files[0]), (int (*)()) file_compare);
+           sizeof flist->files[0], (int (*)())file_compare);
 
        for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
                if (flist->files[i]->basename) {
@@ -1385,16 +1499,10 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
                        /* Make sure that if we unduplicate '.', that we don't
                         * lose track of a user-specified starting point (or
                         * else deletions will mysteriously fail with -R). */
-                       if (flist->files[i]->flags & FLAG_DELETE)
-                               flist->files[prev_i]->flags |= FLAG_DELETE;
-                       /* it's not great that the flist knows the semantics of
-                        * the file memory usage, but i'd rather not add a flag
-                        * byte to that struct.
-                        * XXX can i use a bit in the flags field? */
-                       if (flist->string_area)
-                               flist->files[i][0] = null_file;
-                       else
-                               free_file(flist->files[i]);
+                       if (flist->files[i]->flags & FLAG_DEL_START)
+                               flist->files[prev_i]->flags |= FLAG_DEL_START;
+
+                       clear_file(i, flist);
                } else
                        prev_i = i;
        }
@@ -1417,17 +1525,28 @@ static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
                        }
                }
        }
+}
 
-       if (verbose <= 3)
-               return;
+static void output_flist(struct file_list *flist, const char *whose_list)
+{
+       char uidbuf[16], gidbuf[16];
+       struct file_struct *file;
+       int i;
 
        for (i = 0; i < flist->count; 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,
-                       (double) flist->files[i]->length);
+               file = flist->files[i];
+               if ((am_root || am_sender) && preserve_uid)
+                       sprintf(uidbuf, " uid=%ld", (long)file->uid);
+               else
+                       *uidbuf = '\0';
+               if (preserve_gid && file->gid != GID_NONE)
+                       sprintf(gidbuf, " gid=%ld", (long)file->gid);
+               else
+                       *gidbuf = '\0';
+               rprintf(FINFO, "[%s] i=%d %s %s %s mode=0%o len=%.0f%s%s\n",
+                       whose_list, i, NS(file->basedir), NS(file->dirname),
+                       NS(file->basename), (int)file->mode,
+                       (double)file->length, uidbuf, gidbuf);
        }
 }
 
@@ -1455,11 +1574,17 @@ int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
        if (!(c1 = (uchar*)f1->dirname)) {
                state1 = fnc_BASE;
                c1 = (uchar*)f1->basename;
+       } else if (!*c1) {
+               state1 = fnc_SLASH;
+               c1 = (uchar*)"/";
        } else
                state1 = fnc_DIR;
        if (!(c2 = (uchar*)f2->dirname)) {
                state2 = fnc_BASE;
                c2 = (uchar*)f2->basename;
+       } else if (!*c2) {
+               state2 = fnc_SLASH;
+               c2 = (uchar*)"/";
        } else
                state2 = fnc_DIR;
 
@@ -1503,25 +1628,26 @@ int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
 
 
 /* Return a copy of the full filename of a flist entry, using the indicated
- * buffer.
+ * 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, int bsize)
+char *f_name_to(struct file_struct *f, char *fbuf)
 {
        if (!f || !f->basename)
                return NULL;
 
        if (f->dirname) {
-               int off = strlcpy(fbuf, f->dirname, bsize);
-               off += strlcpy(fbuf + off, "/", bsize - off);
-               strlcpy(fbuf + off, f->basename, bsize - off);
+               int len = strlen(f->dirname);
+               memcpy(fbuf, f->dirname, len);
+               fbuf[len] = '/';
+               strcpy(fbuf + len + 1, f->basename);
        } else
-               strlcpy(fbuf, f->basename, bsize);
+               strcpy(fbuf, f->basename);
        return fbuf;
 }
 
 
-/* Like f_name_to(), but we rotate through 5 static buffers of our own.
- */
+/* 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];
@@ -1529,5 +1655,145 @@ char *f_name(struct file_struct *f)
 
        n = (n + 1) % (sizeof names / sizeof names[0]);
 
-       return f_name_to(f, names[n], sizeof names[0]);
+       return f_name_to(f, names[n]);
+}
+
+
+static int is_backup_file(char *fn)
+{
+       int k = strlen(fn) - backup_suffix_len;
+       return k > 0 && strcmp(fn+k, backup_suffix) == 0;
+}
+
+
+/* This function is used to implement --delete-during. */
+void delete_in_dir(struct file_list *flist, char *fname)
+{
+       static void *filt_array[MAXPATHLEN/2];
+       static BOOL need_first_push = True;
+       static int fa_lvl = 0;
+       static char fbuf[MAXPATHLEN];
+       struct file_list *dir_list;
+       STRUCT_STAT st;
+       int dlen, j;
+
+       if (!flist) {
+               while (fa_lvl)
+                       pop_local_filters(filt_array[--fa_lvl]);
+               need_first_push = True;
+               *fbuf = '\0';
+               return;
+       }
+
+       if (max_delete && deletion_count >= max_delete)
+               return;
+
+       if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
+               rprintf(FINFO,
+                       "IO error encountered -- skipping file deletion\n");
+               max_delete = -1; /* avoid duplicating the above warning */
+               return;
+       }
+
+       for (j = 0; fbuf[j]; j++) {
+               if (fbuf[j] != fname[j]) {
+                       while (fa_lvl) {
+                               if (fbuf[j] == '/')
+                                       pop_local_filters(filt_array[--fa_lvl]);
+                               if (!fbuf[++j])
+                                       break;
+                       }
+                       break;
+               }
+       }
+
+       dlen = strlcpy(fbuf, fname, MAXPATHLEN);
+       if (need_first_push) {
+               if (dlen != 1 || fbuf[0] != '.') {
+                       char *s = strrchr(fbuf, '/');
+                       int first_dlen;
+                       if (s)
+                               first_dlen = s - fbuf;
+                       else
+                               first_dlen = 0;
+                       if (!s || s[1] != '.' || s[2] != '\0') {
+                               filt_array[fa_lvl++] = push_local_filters(fbuf,
+                                                                         first_dlen);
+                       }
+               }
+               need_first_push = False;
+       }
+
+       if (dlen >= MAXPATHLEN - 1)
+               return;
+       if (fa_lvl >= MAXPATHLEN/2)
+               return; /* impossible... */
+
+       if (link_stat(fname, &st, keep_dirlinks) < 0)
+               return;
+
+       if (one_file_system)
+               filesystem_dev = st.st_dev;
+
+       dir_list = flist_new(WITHOUT_HLINK, "delete_in_dir");
+
+       recurse = 0;
+       filt_array[fa_lvl++] = push_local_filters(fbuf, dlen);
+       send_directory(-1, dir_list, fbuf, dlen);
+       recurse = -1;
+
+       if (dlen == 1 && *fbuf == '.')
+               *fbuf = '\0';
+
+       clean_flist(dir_list, 0, 0);
+
+       if (verbose > 3)
+               output_flist(dir_list, "delete");
+
+       delete_missing(flist, dir_list, fname);
+
+       flist_free(dir_list);
+}
+
+
+/* If an item in dir_list is not found in full_list, delete it from the
+ * filesystem. */
+void delete_missing(struct file_list *full_list, struct file_list *dir_list,
+                   const char *dirname)
+{
+       int i, j, mode;
+
+       if (max_delete && deletion_count >= max_delete)
+               return;
+
+       if (verbose > 1)
+               rprintf(FINFO, "deleting in %s\n", safe_fname(dirname));
+
+       for (i = dir_list->count; i--; ) {
+               if (!dir_list->files[i]->basename)
+                       continue;
+               mode = dir_list->files[i]->mode;
+               if ((j = flist_find(full_list, dir_list->files[i])) < 0
+                   || (delete_during && S_ISDIR(mode)
+                    && !S_ISDIR(full_list->files[j]->mode))) {
+                       char *f = f_name(dir_list->files[i]);
+                       if (make_backups && (backup_dir || !is_backup_file(f))
+                         && !S_ISDIR(mode)) {
+                               make_backup(f);
+                               if (verbose) {
+                                       rprintf(FINFO, "deleting %s\n",
+                                               safe_fname(f));
+                               }
+                       } else if (S_ISDIR(mode)) {
+                               int dflag = delete_during ? DEL_FORCE_RECURSE
+                                                         : DEL_NO_RECURSE;
+                               delete_file(f, DEL_DIR | dflag);
+                       } else {
+                               delete_file(f, 0);
+                       }
+                       deletion_count++;
+                       if (max_delete && deletion_count >= max_delete)
+                               break;
+               }
+       }
 }