git: f0211e11c062 - main - net/rsync: Add back the FLAGS option
- Go to: [ bottom of page ] [ top of archives ] [ this month ]
Date: Mon, 06 Jul 2026 10:09:04 UTC
The branch main has been updated by des:
URL: https://cgit.FreeBSD.org/ports/commit/?id=f0211e11c062ab148ef063283ffcc4c491a0bcc0
commit f0211e11c062ab148ef063283ffcc4c491a0bcc0
Author: Dag-Erling Smørgrav <des@FreeBSD.org>
AuthorDate: 2026-07-06 10:08:45 +0000
Commit: Dag-Erling Smørgrav <des@FreeBSD.org>
CommitDate: 2026-07-06 10:08:45 +0000
net/rsync: Add back the FLAGS option
This restores support for copying file flags and fixes a long-standing
peeve of mine by renaming the command-line option to --file-flags,
better matching the naming style of other rsync options. Full backward
compatibility is maintained, including with older servers.
Reviewed by: rodrigo
Differential Revision: https://reviews.freebsd.org/D57645
---
net/rsync/Makefile | 8 +-
net/rsync/files/extra-patch-file-flags.diff | 1382 +++++++++++++++++++++++++++
net/rsync/files/extrapatch-main.c | 10 -
3 files changed, 1386 insertions(+), 14 deletions(-)
diff --git a/net/rsync/Makefile b/net/rsync/Makefile
index 164653014d3c..234fdd794f34 100644
--- a/net/rsync/Makefile
+++ b/net/rsync/Makefile
@@ -44,15 +44,15 @@ SUB_LIST= NAME=rsyncd
PORTDOCS= NEWS.md README.md csprotocol.txt tech_report.tex
# define options
-OPTIONS_DEFINE= DOCS ICONV POPT_PORT SSH ZLIB_BASE
-OPTIONS_DEFAULT= ICONV SSH ZLIB_BASE
-OPTIONS_RADIO= PTS
+OPTIONS_DEFINE= DOCS FLAGS ICONV POPT_PORT SSH ZLIB_BASE
+OPTIONS_DEFAULT= FLAGS ICONV SSH ZLIB_BASE
# options provided upstream
POPT_PORT_DESC= Use popt from devel/popt instead of bundled one
-PTS_DESC= Functionality provided by third party patches
SSH_DESC= Use SSH instead of RSH
+FLAGS_DESC= File system flags support patch, adds --file-flags
+FLAGS_EXTRA_PATCHES= ${FILESDIR}/extra-patch-file-flags.diff
ZLIB_BASE_DESC= Use zlib from base instead of bundled one
ICONV_USES= iconv:translit
diff --git a/net/rsync/files/extra-patch-file-flags.diff b/net/rsync/files/extra-patch-file-flags.diff
new file mode 100644
index 000000000000..c23053a44177
--- /dev/null
+++ b/net/rsync/files/extra-patch-file-flags.diff
@@ -0,0 +1,1382 @@
+Add support for preserving BSD file flags
+
+Original patch by Rolf Grossmann <grossman@progtech.net>
+Rsync 3.4.4 port by Dag-Erling Smørgrav <des@FreeBSD.org>
+
+--- backup.c.orig
++++ backup.c
+@@ -207,7 +207,7 @@ static inline int link_or_rename(const char *from, const char *to,
+ return 0;
+ }
+ #endif
+- if (do_rename_at(from, to) == 0) {
++ if (do_rename_at(from, to, stp->st_mode, ST_FLAGS(*stp)) == 0) {
+ if (stp->st_nlink > 1 && !S_ISDIR(stp->st_mode)) {
+ /* If someone has hard-linked the file into the backup
+ * dir, rename() might return success but do nothing! */
+--- compat.c.orig
++++ compat.c
+@@ -40,6 +40,7 @@ extern int checksum_seed;
+ extern int basis_dir_cnt;
+ extern int prune_empty_dirs;
+ extern int protocol_version;
++extern int force_change;
+ extern int protect_args;
+ extern int preserve_uid;
+ extern int preserve_gid;
+@@ -47,6 +48,7 @@ extern int preserve_atimes;
+ extern int preserve_crtimes;
+ extern int preserve_acls;
+ extern int preserve_xattrs;
++extern int preserve_file_flags;
+ extern int xfer_flags_as_varint;
+ extern int need_messages_from_generator;
+ extern int delete_mode, delete_before, delete_during, delete_after;
+@@ -87,7 +89,7 @@ struct name_num_item *xattr_sum_nni;
+ int xattr_sum_len = 0;
+
+ /* These index values are for the file-list's extra-attribute array. */
+-int pathname_ndx, depth_ndx, atimes_ndx, crtimes_ndx, uid_ndx, gid_ndx, acls_ndx, xattrs_ndx, unsort_ndx;
++int pathname_ndx, depth_ndx, atimes_ndx, crtimes_ndx, uid_ndx, gid_ndx, file_flags_ndx, acls_ndx, xattrs_ndx, unsort_ndx;
+
+ int receiver_symlink_times = 0; /* receiver can set the time on a symlink */
+ int sender_symlink_iconv = 0; /* sender should convert symlink content */
+@@ -589,6 +591,8 @@ void setup_protocol(int f_out,int f_in)
+ uid_ndx = ++file_extra_cnt;
+ if (preserve_gid)
+ gid_ndx = ++file_extra_cnt;
++ if (preserve_file_flags || (force_change && !am_sender))
++ file_flags_ndx = ++file_extra_cnt;
+ if (preserve_acls && !am_sender)
+ acls_ndx = ++file_extra_cnt;
+ if (preserve_xattrs)
+@@ -752,6 +756,10 @@ void setup_protocol(int f_out,int f_in)
+ fprintf(stderr, "Both rsync versions must be at least 3.2.0 for --crtimes.\n");
+ exit_cleanup(RERR_PROTOCOL);
+ }
++ if (!xfer_flags_as_varint && preserve_file_flags) {
++ fprintf(stderr, "Both rsync versions must be at least 3.2.0 for --file-flags.\n");
++ exit_cleanup(RERR_PROTOCOL);
++ }
+ if (am_sender) {
+ receiver_symlink_times = am_server
+ ? strchr(client_info, 'L') != NULL
+--- delete.c.orig
++++ delete.c
+@@ -25,6 +25,7 @@
+ extern int am_root;
+ extern int make_backups;
+ extern int max_delete;
++extern int force_change;
+ extern char *backup_dir;
+ extern char *backup_suffix;
+ extern int backup_suffix_len;
+@@ -97,8 +98,12 @@ static enum delret delete_dir_contents(char *fname, uint16 flags)
+ }
+
+ strlcpy(p, fp->basename, remainder);
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change)
++ make_mutable(fname, fp->mode, F_FFLAGS(fp), force_change);
++#endif
+ if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
+- do_chmod_at(fname, fp->mode | S_IWUSR);
++ do_chmod_at(fname, fp->mode | S_IWUSR, NO_FFLAGS);
+ /* Save stack by recursing to ourself directly. */
+ if (S_ISDIR(fp->mode)) {
+ if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
+@@ -139,11 +144,18 @@ enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
+ }
+
+ if (flags & DEL_NO_UID_WRITE)
+- do_chmod_at(fbuf, mode | S_IWUSR);
++ do_chmod_at(fbuf, mode | S_IWUSR, NO_FFLAGS);
+
+ if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
+ /* This only happens on the first call to delete_item() since
+ * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change) {
++ STRUCT_STAT st;
++ if (x_lstat(fbuf, &st, NULL) == 0)
++ make_mutable(fbuf, st.st_mode, st.st_flags, force_change);
++ }
++#endif
+ ignore_perishable = 1;
+ /* If DEL_RECURSE is not set, this just reports emptiness. */
+ ret = delete_dir_contents(fbuf, flags);
+--- flist.c.orig
++++ flist.c
+@@ -52,6 +52,7 @@ extern int preserve_links;
+ extern int preserve_hard_links;
+ extern int preserve_devices;
+ extern int preserve_specials;
++extern int preserve_file_flags;
+ extern int delete_during;
+ extern int missing_args;
+ extern int eol_nulls;
+@@ -400,6 +401,9 @@ static void send_file_entry(int f, const char *fname, struct file_struct *file,
+ static time_t crtime;
+ #endif
+ static mode_t mode;
++#ifdef SUPPORT_FILE_FLAGS
++ static uint32 file_flags;
++#endif
+ #ifdef SUPPORT_HARD_LINKS
+ static int64 dev;
+ #endif
+@@ -443,6 +447,14 @@ static void send_file_entry(int f, const char *fname, struct file_struct *file,
+ xflags |= XMIT_SAME_MODE;
+ else
+ mode = file->mode;
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags) {
++ if (F_FFLAGS(file) == file_flags)
++ xflags |= XMIT_SAME_FLAGS;
++ else
++ file_flags = F_FFLAGS(file);
++ }
++#endif
+
+ if (preserve_devices && IS_DEVICE(mode)) {
+ if (protocol_version < 28) {
+@@ -604,6 +616,10 @@ static void send_file_entry(int f, const char *fname, struct file_struct *file,
+ #endif
+ if (!(xflags & XMIT_SAME_MODE))
+ write_int(f, to_wire_mode(mode));
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags && !(xflags & XMIT_SAME_FLAGS))
++ write_int(f, (int)file_flags);
++#endif
+ if (atimes_ndx && !S_ISDIR(mode) && !(xflags & XMIT_SAME_ATIME))
+ write_varlong(f, atime, 4);
+ if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
+@@ -698,6 +714,9 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
+ static time_t crtime;
+ #endif
+ static mode_t mode;
++#ifdef SUPPORT_FILE_FLAGS
++ static uint32 file_flags;
++#endif
+ #ifdef SUPPORT_HARD_LINKS
+ static int64 dev;
+ #endif
+@@ -815,6 +834,10 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
+ #ifdef SUPPORT_CRTIMES
+ if (crtimes_ndx)
+ crtime = F_CRTIME(first);
++#endif
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags)
++ file_flags = F_FFLAGS(first);
+ #endif
+ if (preserve_uid)
+ uid = F_OWNER(first);
+@@ -904,6 +927,10 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
+
+ if (chmod_modes && !S_ISLNK(mode) && mode)
+ mode = tweak_mode(mode, chmod_modes);
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags && !(xflags & XMIT_SAME_FLAGS))
++ file_flags = (uint32)read_int(f);
++#endif
+
+ if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
+ if (protocol_version < 30)
+@@ -1085,6 +1112,10 @@ static struct file_struct *recv_file_entry(int f, struct file_list *flist, int x
+ }
+ #endif
+ file->mode = mode;
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags)
++ F_FFLAGS(file) = file_flags;
++#endif
+ if (preserve_uid)
+ F_OWNER(file) = uid;
+ if (preserve_gid) {
+@@ -1506,6 +1537,10 @@ struct file_struct *make_file(const char *fname, struct file_list *flist,
+ }
+ #endif
+ file->mode = st.st_mode;
++#if defined SUPPORT_FILE_FLAGS || defined SUPPORT_FORCE_CHANGE
++ if (file_flags_ndx)
++ F_FFLAGS(file) = st.st_flags;
++#endif
+ if (preserve_uid)
+ F_OWNER(file) = st.st_uid;
+ if (preserve_gid)
+--- generator.c.orig
++++ generator.c
+@@ -43,10 +43,12 @@ extern int preserve_devices;
+ extern int preserve_specials;
+ extern int preserve_hard_links;
+ extern int preserve_executability;
++extern int preserve_file_flags;
+ extern int preserve_perms;
+ extern int preserve_mtimes;
+ extern int omit_dir_times;
+ extern int omit_link_times;
++extern int force_change;
+ extern int delete_mode;
+ extern int delete_before;
+ extern int delete_during;
+@@ -493,6 +495,10 @@ int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
+ return 0;
+ if (perms_differ(file, sxp))
+ return 0;
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags && sxp->st.st_flags != F_FFLAGS(file))
++ return 0;
++#endif
+ if (ownership_differs(file, sxp))
+ return 0;
+ #ifdef SUPPORT_ACLS
+@@ -554,6 +560,11 @@ void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statre
+ iflags |= ITEM_REPORT_OWNER;
+ if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
+ iflags |= ITEM_REPORT_GROUP;
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags && !S_ISLNK(file->mode)
++ && sxp->st.st_flags != F_FFLAGS(file))
++ iflags |= ITEM_REPORT_FFLAGS;
++#endif
+ #ifdef SUPPORT_ACLS
+ if (preserve_acls && !S_ISLNK(file->mode)) {
+ if (!ACL_READY(*sxp))
+@@ -1466,6 +1477,10 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
+ if (!preserve_perms) { /* See comment in non-dir code below. */
+ file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, statret == 0);
+ }
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && !preserve_file_flags)
++ F_FFLAGS(file) = sx.st.st_flags;
++#endif
+ if (statret != 0 && basis_dir[0] != NULL) {
+ int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
+ if (j == -2) {
+@@ -1508,10 +1523,15 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
+ * readable and writable permissions during the time we are
+ * putting files within them. This is then restored to the
+ * former permissions after the transfer is done. */
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && F_FFLAGS(file) & force_change
++ && make_mutable(fname, file->mode, F_FFLAGS(file), force_change))
++ need_retouch_dir_perms = 1;
++#endif
+ #ifdef HAVE_CHMOD
+ if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
+ mode_t mode = file->mode | S_IRWXU;
+- if (do_chmod_at(fname, mode) < 0) {
++ if (do_chmod_at(fname, mode, 0) < 0) {
+ rsyserr(FERROR_XFER, errno,
+ "failed to modify permissions on %s",
+ full_fname(fname));
+@@ -1546,6 +1566,10 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
+ int exists = statret == 0 && stype != FT_DIR;
+ file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, exists);
+ }
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && !preserve_file_flags)
++ F_FFLAGS(file) = sx.st.st_flags;
++#endif
+
+ #ifdef SUPPORT_HARD_LINKS
+ if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
+@@ -2053,7 +2077,7 @@ int atomic_create(struct file_struct *file, char *fname, const char *slnk, const
+ }
+
+ if (!skip_atomic) {
+- if (do_rename_at(tmpname, fname) < 0) {
++ if (do_rename_at(tmpname, fname, file->mode, NO_FFLAGS) < 0) {
+ char *full_tmpname = strdup(full_fname(tmpname));
+ if (full_tmpname == NULL)
+ out_of_memory("atomic_create");
+@@ -2124,17 +2148,25 @@ static void touch_up_dirs(struct file_list *flist, int ndx)
+ continue;
+ fname = f_name(file, NULL);
+ if (fix_dir_perms)
+- do_chmod_at(fname, file->mode);
++ do_chmod_at(fname, file->mode, 0);
+ if (need_retouch_dir_times) {
+ STRUCT_STAT st;
+ if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
+ st.st_mtime = file->modtime;
+ #ifdef ST_MTIME_NSEC
+ st.ST_MTIME_NSEC = F_MOD_NSEC_or_0(file);
++#endif
++#ifdef SUPPORT_FORCE_CHANGE
++ st.st_mode = file->mode;
++ st.st_flags = 0;
+ #endif
+ set_times(fname, &st);
+ }
+ }
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && F_FFLAGS(file) & force_change)
++ undo_make_mutable(fname, F_FFLAGS(file));
++#endif
+ if (counter >= loopchk_limit) {
+ if (allowed_lull)
+ maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
+--- log.c.orig
++++ log.c
+@@ -731,7 +731,8 @@ static void log_formatted(enum logcode code, const char *format, const char *op,
+ : iflags & ITEM_REPORT_ATIME ? 'u' : 'n';
+ c[9] = !(iflags & ITEM_REPORT_ACL) ? '.' : 'a';
+ c[10] = !(iflags & ITEM_REPORT_XATTR) ? '.' : 'x';
+- c[11] = '\0';
++ c[11] = !(iflags & ITEM_REPORT_FFLAGS) ? '.' : 'f';
++ c[12] = '\0';
+
+ if (iflags & (ITEM_IS_NEW|ITEM_MISSING_DATA)) {
+ char ch = iflags & ITEM_IS_NEW ? '+' : '?';
+--- main.c.orig
++++ main.c
+@@ -31,6 +31,9 @@
+ #ifdef __TANDEM
+ #include <floss.h(floss_execlp)>
+ #endif
++#ifdef SUPPORT_FORCE_CHANGE
++#include <sys/sysctl.h>
++#endif
+
+ extern int dry_run;
+ extern int list_only;
+@@ -49,6 +52,7 @@ extern int need_messages_from_generator;
+ extern int kluge_around_eof;
+ extern int got_xfer_error;
+ extern int old_style_args;
++extern int force_change;
+ extern int msgs2stderr;
+ extern int module_id;
+ extern int read_only;
+@@ -995,6 +999,22 @@ static int do_recv(int f_in, int f_out, char *local_name)
+ * points to an identical file won't be replaced by the referent. */
+ copy_links = copy_dirlinks = copy_unsafe_links = 0;
+
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change & SYS_IMMUTABLE) {
++ /* Determine whether we'll be able to unlock a system immutable item. */
++ int mib[2];
++ int securityLevel = 0;
++ size_t len = sizeof securityLevel;
++
++ mib[0] = CTL_KERN;
++ mib[1] = KERN_SECURELVL;
++ if (sysctl(mib, 2, &securityLevel, &len, NULL, 0) == 0 && securityLevel > 0) {
++ rprintf(FERROR, "System security level is too high to force mutability on system immutable files and directories.\n");
++ exit_cleanup(RERR_UNSUPPORTED);
++ }
++ }
++#endif
++
+ #ifdef SUPPORT_HARD_LINKS
+ if (preserve_hard_links && !inc_recurse)
+ match_hard_links(first_flist);
+--- options.c.orig
++++ options.c
+@@ -56,6 +56,7 @@ int preserve_hard_links = 0;
+ int preserve_acls = 0;
+ int preserve_xattrs = 0;
+ int preserve_perms = 0;
++int preserve_file_flags = 0;
+ int preserve_executability = 0;
+ int preserve_devices = 0;
+ int preserve_specials = 0;
+@@ -99,6 +100,7 @@ int msgs2stderr = 2; /* Default: send errors to stderr for local & remote-shell
+ int saw_stderr_opt = 0;
+ int allow_8bit_chars = 0;
+ int force_delete = 0;
++int force_change = 0;
+ int io_timeout = 0;
+ int prune_empty_dirs = 0;
+ int use_qsort = 0;
+@@ -633,6 +635,10 @@ static struct poptOption long_options[] = {
+ {"perms", 'p', POPT_ARG_VAL, &preserve_perms, 1, 0, 0 },
+ {"no-perms", 0, POPT_ARG_VAL, &preserve_perms, 0, 0, 0 },
+ {"no-p", 0, POPT_ARG_VAL, &preserve_perms, 0, 0, 0 },
++ {"file-flags", 0, POPT_ARG_VAL, &preserve_file_flags, 1, 0, 0 },
++ {"fileflags", 0, POPT_ARG_VAL, &preserve_file_flags, 1, 0, 0 },
++ {"no-file-flags", 0, POPT_ARG_VAL, &preserve_file_flags, 0, 0, 0 },
++ {"no-fileflags", 0, POPT_ARG_VAL, &preserve_file_flags, 0, 0, 0 },
+ {"executability", 'E', POPT_ARG_NONE, &preserve_executability, 0, 0, 0 },
+ {"acls", 'A', POPT_ARG_NONE, 0, 'A', 0, 0 },
+ {"no-acls", 0, POPT_ARG_VAL, &preserve_acls, 0, 0, 0 },
+@@ -731,6 +737,12 @@ static struct poptOption long_options[] = {
+ {"remove-source-files",0,POPT_ARG_VAL, &remove_source_files, 1, 0, 0 },
+ {"force", 0, POPT_ARG_VAL, &force_delete, 1, 0, 0 },
+ {"no-force", 0, POPT_ARG_VAL, &force_delete, 0, 0, 0 },
++ {"force-delete", 0, POPT_ARG_VAL, &force_delete, 1, 0, 0 },
++ {"no-force-delete", 0, POPT_ARG_VAL, &force_delete, 0, 0, 0 },
++ {"force-change", 0, POPT_ARG_VAL, &force_change, ALL_IMMUTABLE, 0, 0 },
++ {"no-force-change", 0, POPT_ARG_VAL, &force_change, 0, 0, 0 },
++ {"force-uchange", 0, POPT_ARG_VAL, &force_change, USR_IMMUTABLE, 0, 0 },
++ {"force-schange", 0, POPT_ARG_VAL, &force_change, SYS_IMMUTABLE, 0, 0 },
+ {"ignore-errors", 0, POPT_ARG_VAL, &ignore_errors, 1, 0, 0 },
+ {"no-ignore-errors", 0, POPT_ARG_VAL, &ignore_errors, 0, 0, 0 },
+ {"max-delete", 0, POPT_ARG_INT, &max_delete, 0, 0, 0 },
+@@ -1028,6 +1040,15 @@ static void set_refuse_options(void)
+ #ifndef SUPPORT_CRTIMES
+ parse_one_refuse_match(0, "crtimes", list_end);
+ #endif
++#ifndef SUPPORT_FILE_FLAGS
++ parse_one_refuse_match(0, "file-flags", list_end);
++ parse_one_refuse_match(0, "fileflags", list_end);
++#endif
++#ifndef SUPPORT_FORCE_CHANGE
++ parse_one_refuse_match(0, "force-change", list_end);
++ parse_one_refuse_match(0, "force-uchange", list_end);
++ parse_one_refuse_match(0, "force-schange", list_end);
++#endif
+
+ /* Now we use the descrip values to actually mark the options for refusal. */
+ for (op = long_options; op != list_end; op++) {
+@@ -2752,6 +2773,9 @@ void server_options(char **args, int *argc_p)
+ if (xfer_dirs && !recurse && delete_mode && am_sender)
+ args[ac++] = "--no-r";
+
++ if (preserve_file_flags)
++ args[ac++] = "--fileflags";
++
+ if (do_compression && do_compression_level != CLVL_NOT_SPECIFIED) {
+ if (asprintf(&arg, "--compress-level=%d", do_compression_level) < 0)
+ goto oom;
+@@ -2847,6 +2871,16 @@ void server_options(char **args, int *argc_p)
+ args[ac++] = "--delete-excluded";
+ if (force_delete)
+ args[ac++] = "--force";
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change) {
++ if (force_change == ALL_IMMUTABLE)
++ args[ac++] = "--force-change";
++ else if (force_change == USR_IMMUTABLE)
++ args[ac++] = "--force-uchange";
++ else if (force_change == SYS_IMMUTABLE)
++ args[ac++] = "--force-schange";
++ }
++#endif
+ if (write_batch < 0)
+ args[ac++] = "--only-write-batch=X";
+ if (am_root > 1)
+--- receiver.c.orig
++++ receiver.c
+@@ -543,7 +543,7 @@ static void handle_delayed_updates(char *local_name)
+ }
+ /* We don't use robust_rename() here because the
+ * partial-dir must be on the same drive. */
+- if (do_rename_at(partialptr, fname) < 0) {
++ if (do_rename_at(partialptr, fname, 0, NO_FFLAGS) < 0) {
+ rsyserr(FERROR_XFER, errno,
+ "rename failed for %s (from %s)",
+ full_fname(fname), partialptr);
+--- rsync.1.md.orig
++++ rsync.1.md
+@@ -446,6 +446,7 @@ has its own detailed description later in this manpage.
+ --keep-dirlinks, -K treat symlinked dir on receiver as dir
+ --hard-links, -H preserve hard links
+ --perms, -p preserve permissions
++--file-flags preserve file flags (aka chflags)
+ --executability, -E preserve executability
+ --chmod=CHMOD affect file and/or directory permissions
+ --acls, -A preserve ACLs (implies --perms)
+@@ -487,7 +488,11 @@ has its own detailed description later in this manpage.
+ --ignore-missing-args ignore missing source args without error
+ --delete-missing-args delete missing source args from destination
+ --ignore-errors delete even if there are I/O errors
+---force force deletion of dirs even if not empty
++--force an alias for --force-delete
++--force-delete force deletion of directories even if not empty
++--force-change affect user-/system-immutable files/dirs
++--force-uchange affect user-immutable files/dirs
++--force-schange affect system-immutable files/dirs
+ --max-delete=NUM don't delete more than NUM files
+ --max-size=SIZE don't transfer any file larger than SIZE
+ --min-size=SIZE don't transfer any file smaller than SIZE
+@@ -832,6 +837,7 @@ expand it.
+ recursion and want to preserve almost everything. Be aware that it does
+ **not** include preserving ACLs (`-A`), xattrs (`-X`), atimes (`-U`),
+ crtimes (`-N`), nor the finding and preserving of hardlinks (`-H`).
++ It also does **not** imply [`--file-flags`](#opt).
+
+ The only exception to the above equivalence is when [`--files-from`](#opt)
+ is specified, in which case [`-r`](#opt) is not implied.
+@@ -1296,7 +1302,7 @@ expand it.
+ Without this option, if the sending side has replaced a directory with a
+ symlink to a directory, the receiving side will delete anything that is in
+ the way of the new symlink, including a directory hierarchy (as long as
+- [`--force`](#opt) or [`--delete`](#opt) is in effect).
++ [`--force-delete`](#opt) or [`--delete`](#opt) is in effect).
+
+ See also [`--keep-dirlinks`](#opt) for an analogous option for the
+ receiving side.
+@@ -1491,6 +1497,37 @@ expand it.
+ those used by [`--fake-super`](#opt)) unless you repeat the option (e.g. `-XX`).
+ This "copy all xattrs" mode cannot be used with [`--fake-super`](#opt).
+
++0. `--file-flags`
++
++ This option causes rsync to update the file flags to be the same as the
++ source files and directories (if your OS supports the **chflags**(2) system
++ call). Some flags can only be altered by the super-user and some might
++ only be unset below a certain secure-level (usually single-user mode). It
++ will not make files alterable that are set to immutable on the receiver.
++ To do that, see [`--force-change`](#opt), [`--force-uchange`](#opt), and
++ [`--force-schange`](#opt).
++
++0. `--force-change`
++
++ This option causes rsync to disable both user-immutable and
++ system-immutable flags on files and directories that are being updated or
++ deleted on the receiving side. This option overrides
++ [`--force-uchange`](#opt) and [`--force-schange`](#opt).
++
++0. `--force-uchange`
++
++ This option causes rsync to disable user-immutable flags on files and
++ directories that are being updated or deleted on the receiving side. It
++ does not try to affect system flags. This option overrides
++ [`--force-change`](#opt) and [`--force-schange`](#opt).
++
++0. `--force-schange`
++
++ This option causes rsync to disable system-immutable flags on files and
++ directories that are being updated or deleted on the receiving side. It
++ does not try to affect user flags. This option overrides
++ [`--force-change`](#opt) and [`--force-uchange`](#opt).
++
+ 0. `--chmod=CHMOD`
+
+ This option tells rsync to apply one or more comma-separated "chmod" modes
+@@ -2020,8 +2057,8 @@ expand it.
+ [`--ignore-missing-args`](#opt) option a step farther: each missing arg
+ will become a deletion request of the corresponding destination file on the
+ receiving side (should it exist). If the destination file is a non-empty
+- directory, it will only be successfully deleted if [`--force`](#opt) or
+- [`--delete`](#opt) are in effect. Other than that, this option is
++ directory, it will only be successfully deleted if [`--force-delete`](#opt)
++ or [`--delete`](#opt) are in effect. Other than that, this option is
+ independent of any other type of delete processing.
+
+ The missing source files are represented by special file-list entries which
+@@ -2032,14 +2069,14 @@ expand it.
+ Tells [`--delete`](#opt) to go ahead and delete files even when there are
+ I/O errors.
+
+-0. `--force`
++0. `--force-delete`, `--force`
+
+ This option tells rsync to delete a non-empty directory when it is to be
+ replaced by a non-directory. This is only relevant if deletions are not
+ active (see [`--delete`](#opt) for details).
+
+- Note for older rsync versions: `--force` used to still be required when
+- using [`--delete-after`](#opt), and it used to be non-functional unless the
++ Note that some older rsync versions used to require `--force` when using
++ [`--delete-after`](#opt), and it used to be non-functional unless the
+ [`--recursive`](#opt) option was also enabled.
+
+ 0. `--max-delete=NUM`
+@@ -3116,7 +3153,7 @@ expand it.
+ also turns on the output of other verbose messages).
+
+ The "%i" escape has a cryptic output that is 11 letters long. The general
+- format is like the string `YXcstpoguax`, where **Y** is replaced by the type
++ format is like the string `YXcstpoguaxf`, where **Y** is replaced by the type
+ of update being done, **X** is replaced by the file-type, and the other
+ letters represent attributes that may be output if they are being modified.
+
+--- rsync.c.orig
++++ rsync.c
+@@ -31,6 +31,7 @@ extern int dry_run;
+ extern int preserve_acls;
+ extern int preserve_xattrs;
+ extern int preserve_perms;
++extern int preserve_file_flags;
+ extern int preserve_executability;
+ extern int preserve_mtimes;
+ extern int omit_dir_times;
+@@ -471,6 +472,39 @@ mode_t dest_mode(mode_t flist_mode, mode_t stat_mode, int dflt_perms,
+ return new_mode;
+ }
+
++#if defined SUPPORT_FILE_FLAGS || defined SUPPORT_FORCE_CHANGE
++/* Set a file's st_flags. */
++static int set_file_flags(const char *fname, uint32 file_flags)
++{
++ if (do_chflags(fname, file_flags) != 0) {
++ rsyserr(FERROR_XFER, errno,
++ "failed to set file flags on %s",
++ full_fname(fname));
++ return 0;
++ }
++
++ return 1;
++}
++
++/* Remove immutable flags from an object, so it can be altered/removed. */
++int make_mutable(const char *fname, mode_t mode, uint32 file_flags, uint32 iflags)
++{
++ if (S_ISLNK(mode) || !(file_flags & iflags))
++ return 0;
++ if (!set_file_flags(fname, file_flags & ~iflags))
++ return -1;
++ return 1;
++}
++
++/* Undo a prior make_mutable() call that returned a 1. */
++int undo_make_mutable(const char *fname, uint32 file_flags)
++{
++ if (!set_file_flags(fname, file_flags))
++ return -1;
++ return 1;
++}
++#endif
++
+ static int same_mtime(struct file_struct *file, STRUCT_STAT *st, int extra_accuracy)
+ {
+ #ifdef ST_MTIME_NSEC
+@@ -547,7 +581,7 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
+ if (am_root >= 0) {
+ uid_t uid = change_uid ? (uid_t)F_OWNER(file) : sxp->st.st_uid;
+ gid_t gid = change_gid ? (gid_t)F_GROUP(file) : sxp->st.st_gid;
+- if (do_lchown_at(fname, uid, gid) != 0) {
++ if (do_lchown_at(fname, uid, gid, sxp->st.st_mode, ST_FLAGS(sxp->st)) != 0) {
+ /* We shouldn't have attempted to change uid
+ * or gid unless have the privilege. */
+ rsyserr(FERROR_XFER, errno, "%s %s failed",
+@@ -657,7 +691,7 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
+
+ #ifdef HAVE_CHMOD
+ if (!BITS_EQUAL(sxp->st.st_mode, new_mode, CHMOD_BITS)) {
+- int ret = am_root < 0 ? 0 : do_chmod_at(fname, new_mode);
++ int ret = am_root < 0 ? 0 : do_chmod_at(fname, new_mode, ST_FLAGS(sxp->st));
+ if (ret < 0) {
+ rsyserr(FERROR_XFER, errno,
+ "failed to set permissions on %s",
+@@ -669,6 +703,19 @@ int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
+ }
+ #endif
+
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags && !S_ISLNK(sxp->st.st_mode)
++ && sxp->st.st_flags != F_FFLAGS(file)) {
++ uint32 file_flags = F_FFLAGS(file);
++ if (flags & ATTRS_DELAY_IMMUTABLE)
++ file_flags &= ~ALL_IMMUTABLE;
++ if (sxp->st.st_flags != file_flags
++ && !set_file_flags(fname, file_flags))
++ goto cleanup;
++ updated = 1;
++ }
++#endif
++
+ if (INFO_GTE(NAME, 2) && flags & ATTRS_REPORT) {
+ if (updated)
+ rprintf(FCLIENT, "%s\n", fname);
+@@ -746,7 +793,8 @@ int finish_transfer(const char *fname, const char *fnametmp,
+
+ /* Change permissions before putting the file into place. */
+ set_file_attrs(fnametmp, file, NULL, fnamecmp,
+- ok_to_set_time ? ATTRS_ACCURATE_TIME : ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME);
++ ATTRS_DELAY_IMMUTABLE
++ | (ok_to_set_time ? ATTRS_ACCURATE_TIME : ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME));
+
+ /* move tmp file over real file */
+ if (DEBUG_GTE(RECV, 1))
+@@ -763,6 +811,10 @@ int finish_transfer(const char *fname, const char *fnametmp,
+ }
+ if (ret == 0) {
+ /* The file was moved into place (not copied), so it's done. */
++#ifdef SUPPORT_FILE_FLAGS
++ if (preserve_file_flags && F_FFLAGS(file) & ALL_IMMUTABLE)
++ set_file_flags(fname, F_FFLAGS(file));
++#endif
+ return 1;
+ }
+ /* The file was copied, so tweak the perms of the copied file. If it
+@@ -774,7 +826,7 @@ int finish_transfer(const char *fname, const char *fnametmp,
+ ok_to_set_time ? ATTRS_ACCURATE_TIME : ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME);
+
+ if (temp_copy_name) {
+- if (do_rename_at(fnametmp, fname) < 0) {
++ if (do_rename_at(fnametmp, fname, file->mode, NO_FFLAGS) < 0) {
+ rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\"",
+ full_fname(fnametmp), fname);
+ return 0;
+--- rsync.h.orig
++++ rsync.h
+@@ -69,7 +69,7 @@
+
+ /* The following XMIT flags require an rsync that uses a varint for the flag values */
+
+-#define XMIT_RESERVED_16 (1<<16) /* reserved for future fileflags use */
++#define XMIT_SAME_FLAGS (1<<16) /* any protocol - restricted by command-line option */
+ #define XMIT_CRTIME_EQ_MTIME (1<<17) /* any protocol - restricted by command-line option */
+
+ /* These flags are used in the live flist data. */
+@@ -216,6 +216,7 @@
+ #define ATTRS_SKIP_MTIME (1<<1)
+ #define ATTRS_ACCURATE_TIME (1<<2)
+ #define ATTRS_SKIP_ATIME (1<<3)
++#define ATTRS_DELAY_IMMUTABLE (1<<4)
+ #define ATTRS_SKIP_CRTIME (1<<5)
+
+ #define MSG_FLUSH 2
+@@ -244,6 +245,7 @@
+ #define ITEM_REPORT_GROUP (1<<6)
+ #define ITEM_REPORT_ACL (1<<7)
+ #define ITEM_REPORT_XATTR (1<<8)
++#define ITEM_REPORT_FFLAGS (1<<9)
+ #define ITEM_REPORT_CRTIME (1<<10)
+ #define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
+ #define ITEM_XNAME_FOLLOWS (1<<12)
+@@ -611,6 +613,31 @@ typedef unsigned int size_t;
+ #define SUPPORT_CRTIMES 1
+ #endif
+
++#define NO_FFLAGS ((uint32)-1)
++
++#ifdef HAVE_CHFLAGS
++#define SUPPORT_FILE_FLAGS 1
++#define SUPPORT_FORCE_CHANGE 1
++#endif
++
++#if defined SUPPORT_FILE_FLAGS || defined SUPPORT_FORCE_CHANGE
++#ifndef UF_NOUNLINK
++#define UF_NOUNLINK 0
++#endif
++#ifndef SF_NOUNLINK
++#define SF_NOUNLINK 0
++#endif
++#define USR_IMMUTABLE (UF_IMMUTABLE|UF_NOUNLINK|UF_APPEND)
++#define SYS_IMMUTABLE (SF_IMMUTABLE|SF_NOUNLINK|SF_APPEND)
++#define ALL_IMMUTABLE (USR_IMMUTABLE|SYS_IMMUTABLE)
++#define ST_FLAGS(st) ((st).st_flags)
++#else
++#define USR_IMMUTABLE 0
++#define SYS_IMMUTABLE 0
++#define ALL_IMMUTABLE 0
++#define ST_FLAGS(st) NO_FFLAGS
++#endif
++
+ /* Find a variable that is either exactly 32-bits or longer.
+ * If some code depends on 32-bit truncation, it will need to
+ * take special action in a "#if SIZEOF_INT32 > 4" section. */
+@@ -842,6 +869,7 @@ extern int pathname_ndx;
+ extern int depth_ndx;
+ extern int uid_ndx;
+ extern int gid_ndx;
++extern int file_flags_ndx;
+ extern int acls_ndx;
+ extern int xattrs_ndx;
+ extern int file_sum_extra_cnt;
+@@ -897,6 +925,11 @@ extern int file_sum_extra_cnt;
+ /* When the associated option is on, all entries will have these present: */
+ #define F_OWNER(f) REQ_EXTRA(f, uid_ndx)->unum
+ #define F_GROUP(f) REQ_EXTRA(f, gid_ndx)->unum
++#if defined SUPPORT_FILE_FLAGS || defined SUPPORT_FORCE_CHANGE
++#define F_FFLAGS(f) REQ_EXTRA(f, file_flags_ndx)->unum
++#else
++#define F_FFLAGS(f) NO_FFLAGS
++#endif
+ #define F_ACL(f) REQ_EXTRA(f, acls_ndx)->num
+ #define F_XATTR(f) REQ_EXTRA(f, xattrs_ndx)->num
+ #define F_NDX(f) REQ_EXTRA(f, unsort_ndx)->num
+--- syscall.c.orig
++++ syscall.c
+@@ -45,6 +45,7 @@ extern int am_root;
+ extern int am_sender;
+ extern int read_only;
+ extern int list_only;
++extern int force_change;
+ extern int inplace;
+ extern int preallocate_files;
+ extern int preserve_perms;
+@@ -90,7 +91,23 @@ int do_unlink(const char *path)
+ {
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+- return unlink(path);
++ if (unlink(path) == 0)
++ return 0;
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && errno == EPERM) {
++ STRUCT_STAT st;
++
++ if (do_lstat(path, &st) == 0
++ && make_mutable(path, st.st_mode, st.st_flags, force_change) > 0) {
++ if (unlink(path) == 0)
++ return 0;
++ undo_make_mutable(path, st.st_flags);
++ }
++ /* TODO: handle immutable directories */
++ errno = EPERM;
++ }
++#endif
++ return -1;
+ }
+
+ /*
+@@ -142,6 +159,18 @@ int do_unlink_at(const char *path)
+
+ ret = unlinkat(dfd, bname, 0);
+ e = errno;
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && e == EPERM) {
++ STRUCT_STAT st;
++ if (do_lstat(path, &st) == 0
++ && make_mutable(path, st.st_mode, st.st_flags, force_change) > 0) {
++ ret = unlinkat(dfd, bname, 0);
++ e = errno;
++ if (ret != 0)
++ undo_make_mutable(path, st.st_flags);
++ }
++ }
++#endif
+ close(dfd);
+ errno = e;
+ return ret;
+@@ -399,14 +428,35 @@ int do_link_at(const char *old_path, const char *new_path)
+ }
+ #endif
+
+-int do_lchown(const char *path, uid_t owner, gid_t group)
++int do_lchown(const char *path, uid_t owner, gid_t group, UNUSED(mode_t mode), UNUSED(uint32 file_flags))
+ {
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+ #ifndef HAVE_LCHOWN
+ #define lchown chown
+ #endif
+- return lchown(path, owner, group);
++ if (lchown(path, owner, group) == 0)
++ return 0;
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && errno == EPERM) {
++ if (file_flags == NO_FFLAGS) {
++ STRUCT_STAT st;
++ if (do_lstat(path, &st) == 0) {
++ mode = st.st_mode;
++ file_flags = st.st_flags;
++ }
++ }
++ if (file_flags != NO_FFLAGS
++ && make_mutable(path, mode, file_flags, force_change) > 0) {
++ int ret = lchown(path, owner, group);
++ undo_make_mutable(path, file_flags);
++ if (ret == 0)
++ return 0;
++ }
++ errno = EPERM;
++ }
++#endif
++ return -1;
+ }
+
+ /*
+@@ -423,7 +473,7 @@ int do_lchown(const char *path, uid_t owner, gid_t group)
+ Falls through to do_lchown() in the dry-run / non-daemon / chrooted /
+ absolute-path / no-parent cases, identical to do_chmod_at().
+ */
+-int do_lchown_at(const char *fname, uid_t owner, gid_t group)
++int do_lchown_at(const char *fname, uid_t owner, gid_t group, UNUSED(mode_t mode), UNUSED(uint32 file_flags))
+ {
+ #ifdef AT_FDCWD
+ extern int am_daemon, am_chrooted;
+@@ -437,14 +487,14 @@ int do_lchown_at(const char *fname, uid_t owner, gid_t group)
+ RETURN_ERROR_IF_RO_OR_LO;
+
+ if (!am_daemon || am_chrooted)
+- return do_lchown(fname, owner, group);
++ return do_lchown(fname, owner, group, mode, file_flags);
+
+ if (!fname || !*fname || *fname == '/')
+- return do_lchown(fname, owner, group);
++ return do_lchown(fname, owner, group, mode, file_flags);
+
+ slash = strrchr(fname, '/');
+ if (!slash)
+- return do_lchown(fname, owner, group);
++ return do_lchown(fname, owner, group, mode, file_flags);
+
+ dlen = slash - fname;
+ if (dlen >= sizeof dirpath) {
+@@ -461,6 +511,23 @@ int do_lchown_at(const char *fname, uid_t owner, gid_t group)
+
+ ret = fchownat(dfd, bname, owner, group, AT_SYMLINK_NOFOLLOW);
+ e = errno;
++#ifdef SUPPORT_FORCE_CHANGE
++ if (force_change && e == EPERM) {
++ if (file_flags == NO_FFLAGS) {
++ STRUCT_STAT st;
++ if (do_lstat(fname, &st) == 0) {
++ mode = st.st_mode;
++ file_flags = st.st_flags;
++ }
++ }
++ if (file_flags != NO_FFLAGS
++ && make_mutable(fname, mode, file_flags, force_change) > 0) {
++ ret = fchownat(dfd, bname, owner, group, AT_SYMLINK_NOFOLLOW);
++ e = errno;
++ undo_make_mutable(fname, file_flags);
++ }
++ }
++#endif
+ close(dfd);
+ errno = e;
+ return ret;
+@@ -506,7 +573,7 @@ int do_mknod(const char *pathname, mode_t mode, dev_t dev)
+ return -1;
+ close(sock);
+ #ifdef HAVE_CHMOD
+- return do_chmod(pathname, mode);
*** 466 LINES SKIPPED ***