The ACL support has arrived! This version has a brand new protocol
[rsync/rsync.git] / hlink.c
diff --git a/hlink.c b/hlink.c
index 9919e92..f52c0ed 100644 (file)
--- a/hlink.c
+++ b/hlink.c
@@ -4,12 +4,11 @@
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2002 Martin Pool <mbp@samba.org>
- * Copyright (C) 2004, 2005, 2006 Wayne Davison
+ * Copyright (C) 2004-2007 Wayne Davison
  *
  * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -27,18 +26,19 @@ extern int verbose;
 extern int dry_run;
 extern int do_xfers;
 extern int link_dest;
+extern int preserve_acls;
 extern int make_backups;
 extern int protocol_version;
 extern int remove_source_files;
 extern int stdout_format_has_i;
 extern int maybe_ATTRS_REPORT;
 extern char *basis_dir[];
-extern struct file_list *the_file_list;
+extern struct file_list *cur_flist;
 
 #ifdef SUPPORT_HARD_LINKS
 
 #define HASH_LOAD_LIMIT(size) ((size)*3/4)
-#define FPTR(i) (the_file_list->files[i])
+#define FPTR(i) (cur_flist->files[i])
 
 struct ihash_table {
        int32 size;
@@ -251,10 +251,10 @@ void match_hard_links(void)
        int i, ndx_count = 0;
        int32 *ndx_list;
 
-       if (!(ndx_list = new_array(int32, the_file_list->count)))
+       if (!(ndx_list = new_array(int32, cur_flist->count)))
                out_of_memory("match_hard_links");
 
-       for (i = 0; i < the_file_list->count; i++) {
+       for (i = 0; i < cur_flist->count; i++) {
                if (F_IS_HLINKED(FPTR(i)))
                        ndx_list[ndx_count++] = i;
        }
@@ -268,15 +268,15 @@ void match_hard_links(void)
 }
 
 static int maybe_hard_link(struct file_struct *file, int ndx,
-                          const char *fname, int statret, STRUCT_STAT *stp,
+                          const char *fname, int statret, statx *sxp,
                           const char *oldname, STRUCT_STAT *old_stp,
                           const char *realname, int itemizing, enum logcode code)
 {
        if (statret == 0) {
-               if (stp->st_dev == old_stp->st_dev
-                && stp->st_ino == old_stp->st_ino) {
+               if (sxp->st.st_dev == old_stp->st_dev
+                && sxp->st.st_ino == old_stp->st_ino) {
                        if (itemizing) {
-                               itemize(file, ndx, statret, stp,
+                               itemize(fname, file, ndx, statret, sxp,
                                        ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
                                        0, "");
                        }
@@ -285,7 +285,7 @@ static int maybe_hard_link(struct file_struct *file, int ndx,
                        file->flags |= FLAG_HLINK_DONE;
                        return 0;
                }
-               if (make_backups) {
+               if (make_backups > 0) {
                        if (!make_backup(fname))
                                return -1;
                } else if (robust_unlink(fname)) {
@@ -297,7 +297,7 @@ static int maybe_hard_link(struct file_struct *file, int ndx,
 
        if (hard_link_one(file, fname, oldname, 0)) {
                if (itemizing) {
-                       itemize(file, ndx, statret, stp,
+                       itemize(fname, file, ndx, statret, sxp,
                                ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS, 0,
                                realname);
                }
@@ -311,7 +311,7 @@ static int maybe_hard_link(struct file_struct *file, int ndx,
 /* Only called if FLAG_HLINKED is set and FLAG_HLINK_FIRST is not.  Returns:
  * 0 = process the file, 1 = skip the file, -1 = error occurred. */
 int hard_link_check(struct file_struct *file, int ndx, const char *fname,
-                   int statret, STRUCT_STAT *stp, int itemizing,
+                   int statret, statx *sxp, int itemizing,
                    enum logcode code)
 {
        STRUCT_STAT prev_st;
@@ -322,13 +322,13 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
        /* Is the previous link is not complete yet? */
        if (!(prev_file->flags & FLAG_HLINK_DONE)) {
                /* Is the previous link being transferred? */
-               if (prev_file->flags & FLAG_SENT) {
+               if (prev_file->flags & FLAG_FILE_SENT) {
                        /* Add ourselves to the list of files that will be
                         * updated when the transfer completes, and mark
                         * ourself as waiting for the transfer. */
                        F_HL_PREV(file) = F_HL_PREV(prev_file);
                        F_HL_PREV(prev_file) = ndx;
-                       file->flags |= FLAG_SENT;
+                       file->flags |= FLAG_FILE_SENT;
                        return 1;
                }
                return 0;
@@ -362,18 +362,20 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
        if (statret < 0 && basis_dir[0] != NULL) {
                /* If we match an alt-dest item, we don't output this as a change. */
                char cmpbuf[MAXPATHLEN];
-               STRUCT_STAT alt_st;
+               statx alt_sx;
                int j = 0;
+#ifdef SUPPORT_ACLS
+               alt_sx.acc_acl = alt_sx.def_acl = NULL;
+#endif
                do {
                        pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
-                       if (link_stat(cmpbuf, &alt_st, 0) < 0)
+                       if (link_stat(cmpbuf, &alt_sx.st, 0) < 0)
                                continue;
                        if (link_dest) {
-                               if (prev_st.st_dev != alt_st.st_dev
-                                || prev_st.st_ino != alt_st.st_ino)
+                               if (prev_st.st_dev != alt_sx.st.st_dev
+                                || prev_st.st_ino != alt_sx.st.st_ino)
                                        continue;
                                statret = 1;
-                               *stp = alt_st;
                                if (verbose < 2 || !stdout_format_has_i) {
                                        itemizing = 0;
                                        code = FNONE;
@@ -382,16 +384,32 @@ int hard_link_check(struct file_struct *file, int ndx, const char *fname,
                                }
                                break;
                        }
-                       if (!unchanged_file(cmpbuf, file, &alt_st))
+                       if (!unchanged_file(cmpbuf, file, &alt_sx.st))
                                continue;
                        statret = 1;
-                       *stp = alt_st;
-                       if (unchanged_attrs(file, &alt_st))
+                       if (unchanged_attrs(cmpbuf, file, &alt_sx))
                                break;
                } while (basis_dir[++j] != NULL);
+               if (statret == 1) {
+                       sxp->st = alt_sx.st;
+#ifdef SUPPORT_ACLS
+                       if (preserve_acls && !S_ISLNK(file->mode)) {
+                               if (!ACL_READY(*sxp))
+                                       get_acl(cmpbuf, sxp);
+                               else {
+                                       sxp->acc_acl = alt_sx.acc_acl;
+                                       sxp->def_acl = alt_sx.def_acl;
+                               }
+                       }
+#endif
+               }
+#ifdef SUPPORT_ACLS
+               else if (preserve_acls)
+                       free_acl(&alt_sx);
+#endif
        }
 
-       if (maybe_hard_link(file, ndx, fname, statret, stp, prev_name, &prev_st,
+       if (maybe_hard_link(file, ndx, fname, statret, sxp, prev_name, &prev_st,
                            realname, itemizing, code) < 0)
                return -1;
 
@@ -426,7 +444,8 @@ void finish_hard_link(struct file_struct *file, const char *fname,
                      STRUCT_STAT *stp, int itemizing, enum logcode code,
                      int alt_dest)
 {
-       STRUCT_STAT st, prev_st;
+       statx prev_sx;
+       STRUCT_STAT st;
        char alt_name[MAXPATHLEN], *prev_name;
        const char *our_name;
        int prev_statret, ndx, prev_ndx = F_HL_PREV(file);
@@ -450,14 +469,24 @@ void finish_hard_link(struct file_struct *file, const char *fname,
        } else
                our_name = fname;
 
+#ifdef SUPPORT_ACLS
+       prev_sx.acc_acl = prev_sx.def_acl = NULL;
+#endif
+
        while ((ndx = prev_ndx) >= 0) {
+               int val;
                file = FPTR(ndx);
                file->flags = (file->flags & ~FLAG_HLINK_FIRST) | FLAG_HLINK_DONE;
                prev_ndx = F_HL_PREV(file);
                prev_name = f_name(file, NULL);
-               prev_statret = link_stat(prev_name, &prev_st, 0);
-               if (maybe_hard_link(file, ndx, prev_name, prev_statret, &prev_st,
-                                   our_name, stp, fname, itemizing, code) < 0)
+               prev_statret = link_stat(prev_name, &prev_sx.st, 0);
+               val = maybe_hard_link(file, ndx, prev_name, prev_statret, &prev_sx,
+                                     our_name, stp, fname, itemizing, code);
+#ifdef SUPPORT_ACLS
+               if (preserve_acls)
+                       free_acl(&prev_sx);
+#endif
+               if (val < 0)
                        continue;
                if (remove_source_files == 1 && do_xfers)
                        send_msg_int(MSG_SUCCESS, ndx);