Adding upstream version 3.2.7.upstream/3.2.7

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 828 insertions, 0 deletions

diff --git a/rsync.c b/rsync.c
new file mode 100644
index 0000000..cd288f5
--- /dev/null
+++ b/rsync.c
@@ -0,0 +1,828 @@
+/*
+ * Routines common to more than one of the rsync processes.
+ *
+ * Copyright (C) 1996 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2003-2022 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, visit the http://fsf.org website.
+ */
+
+#include "rsync.h"
+#include "ifuncs.h"
+#if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
+#include <libcharset.h>
+#elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
+#include <langinfo.h>
+#endif
+
+extern int dry_run;
+extern int preserve_acls;
+extern int preserve_xattrs;
+extern int preserve_perms;
+extern int preserve_executability;
+extern int preserve_mtimes;
+extern int omit_dir_times;
+extern int omit_link_times;
+extern int am_root;
+extern int am_server;
+extern int am_daemon;
+extern int am_sender;
+extern int am_receiver;
+extern int am_generator;
+extern int am_starting_up;
+extern int allow_8bit_chars;
+extern int protocol_version;
+extern int got_kill_signal;
+extern int called_from_signal_handler;
+extern int inc_recurse;
+extern int inplace;
+extern int flist_eof;
+extern int file_old_total;
+extern int keep_dirlinks;
+extern int make_backups;
+extern int sanitize_paths;
+extern struct file_list *cur_flist, *first_flist, *dir_flist;
+extern struct chmod_mode_struct *daemon_chmod_modes;
+#ifdef ICONV_OPTION
+extern char *iconv_opt;
+#endif
+
+#define UPDATED_OWNER (1<<0)
+#define UPDATED_GROUP (1<<1)
+#define UPDATED_MTIME (1<<2)
+#define UPDATED_ATIME (1<<3)
+#define UPDATED_ACLS  (1<<4)
+#define UPDATED_MODE  (1<<5)
+#define UPDATED_CRTIME (1<<6)
+
+#ifdef ICONV_CONST
+iconv_t ic_chck = (iconv_t)-1;
+# ifdef ICONV_OPTION
+iconv_t ic_send = (iconv_t)-1, ic_recv = (iconv_t)-1;
+# endif
+
+static const char *default_charset(void)
+{
+# if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
+	return locale_charset();
+# elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
+	return nl_langinfo(CODESET);
+# else
+	return ""; /* Works with (at the very least) gnu iconv... */
+# endif
+}
+
+void setup_iconv(void)
+{
+	const char *defset = default_charset();
+# ifdef ICONV_OPTION
+	const char *charset;
+	char *cp;
+# endif
+
+	if (!am_server && !allow_8bit_chars) {
+		/* It's OK if this fails... */
+		ic_chck = iconv_open(defset, defset);
+
+		if (DEBUG_GTE(ICONV, 2)) {
+			if (ic_chck == (iconv_t)-1) {
+				rprintf(FINFO,
+					"msg checking via isprint()"
+					" (iconv_open(\"%s\", \"%s\") errno: %d)\n",
+					defset, defset, errno);
+			} else {
+				rprintf(FINFO,
+					"msg checking charset: %s\n",
+					defset);
+			}
+		}
+	} else
+		ic_chck = (iconv_t)-1;
+
+# ifdef ICONV_OPTION
+	if (!iconv_opt)
+		return;
+
+	if ((cp = strchr(iconv_opt, ',')) != NULL) {
+		if (am_server) /* A local transfer needs this. */
+			iconv_opt = cp + 1;
+		else
+			*cp = '\0';
+	}
+
+	if (!*iconv_opt || (*iconv_opt == '.' && iconv_opt[1] == '\0'))
+		charset = defset;
+	else
+		charset = iconv_opt;
+
+	if ((ic_send = iconv_open(UTF8_CHARSET, charset)) == (iconv_t)-1) {
+		rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
+			UTF8_CHARSET, charset);
+		exit_cleanup(RERR_UNSUPPORTED);
+	}
+
+	if ((ic_recv = iconv_open(charset, UTF8_CHARSET)) == (iconv_t)-1) {
+		rprintf(FERROR, "iconv_open(\"%s\", \"%s\") failed\n",
+			charset, UTF8_CHARSET);
+		exit_cleanup(RERR_UNSUPPORTED);
+	}
+
+	if (DEBUG_GTE(ICONV, 1)) {
+		rprintf(FINFO, "[%s] charset: %s\n",
+			who_am_i(), *charset ? charset : "[LOCALE]");
+	}
+# endif
+}
+
+/* This function converts the chars in the "in" xbuf into characters in the
+ * "out" xbuf.  The ".len" chars of the "in" xbuf is used starting from its
+ * ".pos".  The ".size" of the "out" xbuf restricts how many characters can
+ * be stored, starting at its ".pos+.len" position.  Note that the last byte
+ * of the "out" xbuf is not used, which reserves space for a trailing '\0'
+ * (though it is up to the caller to store a trailing '\0', as needed).
+ *
+ * We return a 0 on success or a -1 on error.  An error also sets errno to
+ * E2BIG, EILSEQ, or EINVAL (see below); otherwise errno will be set to 0.
+ * The "in" xbuf is altered to update ".pos" and ".len".  The "out" xbuf has
+ * data appended, and its ".len" incremented (see below for a ".size" note).
+ *
+ * If ICB_CIRCULAR_OUT is set in "flags", the chars going into the "out" xbuf
+ * can wrap around to the start, and the xbuf may have its ".size" reduced
+ * (presumably by 1 byte) if the iconv code doesn't have space to store a
+ * multi-byte character at the physical end of the ".buf" (though no reducing
+ * happens if ".pos" is <= 1, since there is no room to wrap around).
+ *
+ * If ICB_EXPAND_OUT is set in "flags", the "out" xbuf will be allocated if
+ * empty, and (as long as ICB_CIRCULAR_OUT is not set) expanded if too small.
+ * This prevents the return of E2BIG (except for a circular xbuf).
+ *
+ * If ICB_INCLUDE_BAD is set in "flags", any badly-encoded chars are included
+ * verbatim in the "out" xbuf, so EILSEQ will not be returned.
+ *
+ * If ICB_INCLUDE_INCOMPLETE is set in "flags", any incomplete multi-byte
+ * chars are included, which ensures that EINVAL is not returned.
+ *
+ * If ICB_INIT is set, the iconv() conversion state is initialized prior to
+ * processing the characters. */
+int iconvbufs(iconv_t ic, xbuf *in, xbuf *out, int flags)
+{
+	ICONV_CONST char *ibuf;
+	size_t icnt, ocnt, opos;
+	char *obuf;
+
+	if (!out->size && flags & ICB_EXPAND_OUT) {
+		size_t siz = ROUND_UP_1024(in->len * 2);
+		alloc_xbuf(out, siz);
+	} else if (out->len+1 >= out->size) {
+		/* There is no room to even start storing data. */
+		if (!(flags & ICB_EXPAND_OUT) || flags & ICB_CIRCULAR_OUT) {
+			errno = E2BIG;
+			return -1;
+		}
+		realloc_xbuf(out, out->size + ROUND_UP_1024(in->len * 2));
+	}
+
+	if (flags & ICB_INIT)
+		iconv(ic, NULL, 0, NULL, 0);
+
+	ibuf = in->buf + in->pos;
+	icnt = in->len;
+
+	opos = out->pos + out->len;
+	if (flags & ICB_CIRCULAR_OUT) {
+		if (opos >= out->size) {
+			opos -= out->size;
+			/* We know that out->pos is not 0 due to the "no room" check
+			 * above, so this can't go "negative". */
+			ocnt = out->pos - opos - 1;
+		} else {
+			/* Allow the use of all bytes to the physical end of the buffer
+			 * unless pos is 0, in which case we reserve our trailing '\0'. */
+			ocnt = out->size - opos - (out->pos ? 0 : 1);
+		}
+	} else
+		ocnt = out->size - opos - 1;
+	obuf = out->buf + opos;
+
+	while (icnt) {
+		while (iconv(ic, &ibuf, &icnt, &obuf, &ocnt) == (size_t)-1) {
+			if (errno == EINTR)
+				continue;
+			if (errno == EINVAL) {
+				if (!(flags & ICB_INCLUDE_INCOMPLETE))
+					goto finish;
+				if (!ocnt)
+					goto e2big;
+			} else if (errno == EILSEQ) {
+				if (!(flags & ICB_INCLUDE_BAD))
+					goto finish;
+				if (!ocnt)
+					goto e2big;
+			} else if (errno == E2BIG) {
+				size_t siz;
+			  e2big:
+				opos = obuf - out->buf;
+				if (flags & ICB_CIRCULAR_OUT && out->pos > 1 && opos > out->pos) {
+					/* We are in a divided circular buffer at the physical
+					 * end with room to wrap to the start.  If iconv() refused
+					 * to use one or more trailing bytes in the buffer, we
+					 * set the size to ignore the unused bytes. */
+					if (opos < out->size)
+						reduce_iobuf_size(out, opos);
+					obuf = out->buf;
+					ocnt = out->pos - 1;
+					continue;
+				}
+				if (!(flags & ICB_EXPAND_OUT) || flags & ICB_CIRCULAR_OUT) {
+					errno = E2BIG;
+					goto finish;
+				}
+				siz = ROUND_UP_1024(in->len * 2);
+				realloc_xbuf(out, out->size + siz);
+				obuf = out->buf + opos;
+				ocnt += siz;
+				continue;
+			} else {
+				rsyserr(FERROR, errno, "unexpected error from iconv()");
+				exit_cleanup(RERR_UNSUPPORTED);
+			}
+			*obuf++ = *ibuf++;
+			ocnt--, icnt--;
+			if (!icnt)
+				break;
+		}
+	}
+
+	errno = 0;
+
+  finish:
+	opos = obuf - out->buf;
+	if (flags & ICB_CIRCULAR_OUT && opos < out->pos)
+		opos += out->size;
+	out->len = opos - out->pos;
+
+	in->len = icnt;
+	in->pos = ibuf - in->buf;
+
+	return errno ? -1 : 0;
+}
+#endif
+
+void send_protected_args(int fd, char *args[])
+{
+	int i;
+#ifdef ICONV_OPTION
+	int convert = ic_send != (iconv_t)-1;
+	xbuf outbuf, inbuf;
+
+	if (convert)
+		alloc_xbuf(&outbuf, 1024);
+#endif
+
+	for (i = 0; args[i]; i++) {} /* find first NULL */
+	args[i] = "rsync"; /* set a new arg0 */
+	if (DEBUG_GTE(CMD, 1))
+		print_child_argv("protected args:", args + i + 1);
+	do {
+		if (!args[i][0])
+			write_buf(fd, ".", 2);
+#ifdef ICONV_OPTION
+		else if (convert) {
+			INIT_XBUF_STRLEN(inbuf, args[i]);
+			iconvbufs(ic_send, &inbuf, &outbuf,
+				  ICB_EXPAND_OUT | ICB_INCLUDE_BAD | ICB_INCLUDE_INCOMPLETE | ICB_INIT);
+			outbuf.buf[outbuf.len] = '\0';
+			write_buf(fd, outbuf.buf, outbuf.len + 1);
+			outbuf.len = 0;
+		}
+#endif
+		else
+			write_buf(fd, args[i], strlen(args[i]) + 1);
+	} while (args[++i]);
+	write_byte(fd, 0);
+
+#ifdef ICONV_OPTION
+	if (convert)
+		free(outbuf.buf);
+#endif
+}
+
+int read_ndx_and_attrs(int f_in, int f_out, int *iflag_ptr, uchar *type_ptr, char *buf, int *len_ptr)
+{
+	int len, iflags = 0;
+	struct file_list *flist;
+	uchar fnamecmp_type = FNAMECMP_FNAME;
+	int ndx;
+
+  read_loop:
+	while (1) {
+		ndx = read_ndx(f_in);
+
+		if (ndx >= 0)
+			break;
+		if (ndx == NDX_DONE)
+			return ndx;
+		if (ndx == NDX_DEL_STATS) {
+			read_del_stats(f_in);
+			if (am_sender && am_server)
+				write_del_stats(f_out);
+			continue;
+		}
+		if (!inc_recurse || am_sender) {
+			int last;
+			if (first_flist)
+				last = first_flist->prev->ndx_start + first_flist->prev->used - 1;
+			else
+				last = -1;
+			rprintf(FERROR,
+				"Invalid file index: %d (%d - %d) [%s]\n",
+				ndx, NDX_DONE, last, who_am_i());
+			exit_cleanup(RERR_PROTOCOL);
+		}
+		if (ndx == NDX_FLIST_EOF) {
+			flist_eof = 1;
+			if (DEBUG_GTE(FLIST, 3))
+				rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
+			write_int(f_out, NDX_FLIST_EOF);
+			continue;
+		}
+		ndx = NDX_FLIST_OFFSET - ndx;
+		if (ndx < 0 || ndx >= dir_flist->used) {
+			ndx = NDX_FLIST_OFFSET - ndx;
+			rprintf(FERROR,
+				"Invalid dir index: %d (%d - %d) [%s]\n",
+				ndx, NDX_FLIST_OFFSET,
+				NDX_FLIST_OFFSET - dir_flist->used + 1,
+				who_am_i());
+			exit_cleanup(RERR_PROTOCOL);
+		}
+
+		if (DEBUG_GTE(FLIST, 2)) {
+			rprintf(FINFO, "[%s] receiving flist for dir %d\n",
+				who_am_i(), ndx);
+		}
+		/* Send all the data we read for this flist to the generator. */
+		start_flist_forward(ndx);
+		flist = recv_file_list(f_in, ndx);
+		flist->parent_ndx = ndx;
+		stop_flist_forward();
+	}
+
+	iflags = protocol_version >= 29 ? read_shortint(f_in)
+		   : ITEM_TRANSFER | ITEM_MISSING_DATA;
+
+	/* Support the protocol-29 keep-alive style. */
+	if (protocol_version < 30 && ndx == cur_flist->used && iflags == ITEM_IS_NEW) {
+		if (am_sender)
+			maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
+		goto read_loop;
+	}
+
+	flist = flist_for_ndx(ndx, "read_ndx_and_attrs");
+	if (flist != cur_flist) {
+		cur_flist = flist;
+		if (am_sender) {
+			file_old_total = cur_flist->used;
+			for (flist = first_flist; flist != cur_flist; flist = flist->next)
+				file_old_total += flist->used;
+		}
+	}
+
+	if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
+		fnamecmp_type = read_byte(f_in);
+	*type_ptr = fnamecmp_type;
+
+	if (iflags & ITEM_XNAME_FOLLOWS) {
+		if ((len = read_vstring(f_in, buf, MAXPATHLEN)) < 0)
+			exit_cleanup(RERR_PROTOCOL);
+
+		if (sanitize_paths) {
+			sanitize_path(buf, buf, "", 0, SP_DEFAULT);
+			len = strlen(buf);
+		}
+	} else {
+		*buf = '\0';
+		len = -1;
+	}
+	*len_ptr = len;
+
+	if (iflags & ITEM_TRANSFER) {
+		int i = ndx - cur_flist->ndx_start;
+		if (i < 0 || !S_ISREG(cur_flist->files[i]->mode)) {
+			rprintf(FERROR,
+				"received request to transfer non-regular file: %d [%s]\n",
+				ndx, who_am_i());
+			exit_cleanup(RERR_PROTOCOL);
+		}
+	}
+
+	*iflag_ptr = iflags;
+	return ndx;
+}
+
+/*
+  free a sums struct
+  */
+void free_sums(struct sum_struct *s)
+{
+	if (s->sums) free(s->sums);
+	free(s);
+}
+
+/* This is only called when we aren't preserving permissions.  Figure out what
+ * the permissions should be and return them merged back into the mode. */
+mode_t dest_mode(mode_t flist_mode, mode_t stat_mode, int dflt_perms,
+		 int exists)
+{
+	int new_mode;
+	/* If the file already exists, we'll return the local permissions,
+	 * possibly tweaked by the --executability option. */
+	if (exists) {
+		new_mode = (flist_mode & ~CHMOD_BITS) | (stat_mode & CHMOD_BITS);
+		if (preserve_executability && S_ISREG(flist_mode)) {
+			/* If the source file is executable, grant execute
+			 * rights to everyone who can read, but ONLY if the
+			 * file isn't already executable. */
+			if (!(flist_mode & 0111))
+				new_mode &= ~0111;
+			else if (!(stat_mode & 0111))
+				new_mode |= (new_mode & 0444) >> 2;
+		}
+	} else {
+		/* Apply destination default permissions and turn
+		 * off special permissions. */
+		new_mode = flist_mode & (~CHMOD_BITS | dflt_perms);
+	}
+	return new_mode;
+}
+
+static int same_mtime(struct file_struct *file, STRUCT_STAT *st, int extra_accuracy)
+{
+#ifdef ST_MTIME_NSEC
+	uint32 f1_nsec = F_MOD_NSEC_or_0(file);
+	uint32 f2_nsec = (uint32)st->ST_MTIME_NSEC;
+#else
+	uint32 f1_nsec = 0, f2_nsec = 0;
+#endif
+
+	if (extra_accuracy) /* ignore modify_window when setting the time after a transfer or checksum check */
+		return file->modtime == st->st_mtime && f1_nsec == f2_nsec;
+
+	return same_time(file->modtime, f1_nsec, st->st_mtime , f2_nsec);
+}
+
+int set_file_attrs(const char *fname, struct file_struct *file, stat_x *sxp,
+		   const char *fnamecmp, int flags)
+{
+	int updated = 0;
+	stat_x sx2;
+	int change_uid, change_gid;
+	mode_t new_mode = file->mode;
+	int inherit;
+
+	if (!sxp) {
+		if (dry_run)
+			return 1;
+		if (link_stat(fname, &sx2.st, 0) < 0) {
+			rsyserr(FERROR_XFER, errno, "stat %s failed",
+				full_fname(fname));
+			return 0;
+		}
+		init_stat_x(&sx2);
+		sxp = &sx2;
+		inherit = !preserve_perms;
+	} else
+		inherit = !preserve_perms && file->flags & FLAG_DIR_CREATED;
+
+	if (inherit && S_ISDIR(new_mode) && sxp->st.st_mode & S_ISGID) {
+		/* We just created this directory and its setgid
+		 * bit is on, so make sure it stays on. */
+		new_mode |= S_ISGID;
+	}
+
+	if (daemon_chmod_modes && !S_ISLNK(new_mode))
+		new_mode = tweak_mode(new_mode, daemon_chmod_modes);
+
+#ifdef SUPPORT_ACLS
+	if (preserve_acls && !S_ISLNK(file->mode) && !ACL_READY(*sxp))
+		get_acl(fname, sxp);
+#endif
+
+	change_uid = am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file);
+	change_gid = gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
+		  && sxp->st.st_gid != (gid_t)F_GROUP(file);
+#ifndef CAN_CHOWN_SYMLINK
+	if (S_ISLNK(sxp->st.st_mode)) {
+		;
+	} else
+#endif
+	if (change_uid || change_gid) {
+		if (DEBUG_GTE(OWN, 1)) {
+			if (change_uid) {
+				rprintf(FINFO,
+					"set uid of %s from %u to %u\n",
+					fname, (unsigned)sxp->st.st_uid, F_OWNER(file));
+			}
+			if (change_gid) {
+				rprintf(FINFO,
+					"set gid of %s from %u to %u\n",
+					fname, (unsigned)sxp->st.st_gid, F_GROUP(file));
+			}
+		}
+		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(fname, uid, gid) != 0) {
+				/* We shouldn't have attempted to change uid
+				 * or gid unless have the privilege. */
+				rsyserr(FERROR_XFER, errno, "%s %s failed",
+					change_uid ? "chown" : "chgrp",
+					full_fname(fname));
+				goto cleanup;
+			}
+			if (uid == (uid_t)-1 && sxp->st.st_uid != (uid_t)-1)
+				rprintf(FERROR_XFER, "uid 4294967295 (-1) is impossible to set on %s\n", full_fname(fname));
+			if (gid == (gid_t)-1 && sxp->st.st_gid != (gid_t)-1)
+				rprintf(FERROR_XFER, "gid 4294967295 (-1) is impossible to set on %s\n", full_fname(fname));
+			/* A lchown had been done, so we need to re-stat if
+			 * the destination had the setuid or setgid bits set
+			 * (due to the side effect of the chown call). */
+			if (sxp->st.st_mode & (S_ISUID | S_ISGID)) {
+				link_stat(fname, &sxp->st,
+					  keep_dirlinks && S_ISDIR(sxp->st.st_mode));
+			}
+		}
+		if (change_uid)
+			updated |= UPDATED_OWNER;
+		if (change_gid)
+			updated |= UPDATED_GROUP;
+	}
+
+#ifdef SUPPORT_XATTRS
+	if (am_root < 0)
+		set_stat_xattr(fname, file, new_mode);
+	if (preserve_xattrs && fnamecmp)
+		set_xattr(fname, file, fnamecmp, sxp);
+#endif
+
+	if ((omit_dir_times && S_ISDIR(sxp->st.st_mode))
+	 || (omit_link_times && S_ISLNK(sxp->st.st_mode)))
+		flags |= ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME;
+	else {
+		if (!preserve_mtimes)
+			flags |= ATTRS_SKIP_MTIME;
+		if (!atimes_ndx || S_ISDIR(sxp->st.st_mode))
+			flags |= ATTRS_SKIP_ATIME;
+		/* Don't set the creation date on the root folder of an HFS+ volume. */
+		if (sxp->st.st_ino == 2 && S_ISDIR(sxp->st.st_mode))
+			flags |= ATTRS_SKIP_CRTIME;
+	}
+	if (sxp != &sx2)
+		memcpy(&sx2.st, &sxp->st, sizeof sx2.st);
+	if (!(flags & ATTRS_SKIP_MTIME) && !same_mtime(file, &sxp->st, flags & ATTRS_ACCURATE_TIME)) {
+		sx2.st.st_mtime = file->modtime;
+#ifdef ST_MTIME_NSEC
+		sx2.st.ST_MTIME_NSEC = F_MOD_NSEC_or_0(file);
+#endif
+		updated |= UPDATED_MTIME;
+	}
+	if (!(flags & ATTRS_SKIP_ATIME)) {
+		time_t file_atime = F_ATIME(file);
+		if (flags & ATTRS_ACCURATE_TIME || !same_time(sxp->st.st_atime, 0, file_atime, 0)) {
+			sx2.st.st_atime = file_atime;
+#ifdef ST_ATIME_NSEC
+			sx2.st.ST_ATIME_NSEC = 0;
+#endif
+			updated |= UPDATED_ATIME;
+		}
+	}
+#ifdef SUPPORT_CRTIMES
+	if (crtimes_ndx && !(flags & ATTRS_SKIP_CRTIME)) {
+		time_t file_crtime = F_CRTIME(file);
+		if (sxp->crtime == 0)
+			sxp->crtime = get_create_time(fname, &sxp->st);
+		if (!same_time(sxp->crtime, 0L, file_crtime, 0L)) {
+			if (
+#ifdef HAVE_GETATTRLIST
+			     do_setattrlist_crtime(fname, file_crtime) == 0
+#elif defined __CYGWIN__
+			     do_SetFileTime(fname, file_crtime) == 0
+#else
+#error Unknown crtimes implementation
+#endif
+			)
+				updated |= UPDATED_CRTIME;
+		}
+	}
+#endif
+	if (updated & (UPDATED_MTIME|UPDATED_ATIME)) {
+		int ret = set_times(fname, &sx2.st);
+		if (ret < 0) {
+			rsyserr(FERROR_XFER, errno, "failed to set times on %s", full_fname(fname));
+			goto cleanup;
+		}
+		if (ret > 0) { /* ret == 1 if symlink could not be set */
+			updated &= ~(UPDATED_MTIME|UPDATED_ATIME);
+			file->flags |= FLAG_TIME_FAILED;
+		}
+	}
+
+#ifdef SUPPORT_ACLS
+	/* It's OK to call set_acl() now, even for a dir, as the generator
+	 * will enable owner-writability using chmod, if necessary.
+	 *
+	 * If set_acl() changes permission bits in the process of setting
+	 * an access ACL, it changes sxp->st.st_mode so we know whether we
+	 * need to chmod(). */
+	if (preserve_acls && !S_ISLNK(new_mode)) {
+		if (set_acl(fname, file, sxp, new_mode) > 0)
+			updated |= UPDATED_ACLS;
+	}
+#endif
+
+#ifdef HAVE_CHMOD
+	if (!BITS_EQUAL(sxp->st.st_mode, new_mode, CHMOD_BITS)) {
+		int ret = am_root < 0 ? 0 : do_chmod(fname, new_mode);
+		if (ret < 0) {
+			rsyserr(FERROR_XFER, errno,
+				"failed to set permissions on %s",
+				full_fname(fname));
+			goto cleanup;
+		}
+		if (ret == 0) /* ret == 1 if symlink could not be set */
+			updated |= UPDATED_MODE;
+	}
+#endif
+
+	if (INFO_GTE(NAME, 2) && flags & ATTRS_REPORT) {
+		if (updated)
+			rprintf(FCLIENT, "%s\n", fname);
+		else
+			rprintf(FCLIENT, "%s is uptodate\n", fname);
+	}
+  cleanup:
+	if (sxp == &sx2)
+		free_stat_x(&sx2);
+	return updated;
+}
+
+/* This is only called for SIGINT, SIGHUP, and SIGTERM. */
+void sig_int(int sig_num)
+{
+	called_from_signal_handler = 1;
+
+	/* KLUGE: if the user hits Ctrl-C while ssh is prompting
+	 * for a password, then our cleanup's sending of a SIGUSR1
+	 * signal to all our children may kill ssh before it has a
+	 * chance to restore the tty settings (i.e. turn echo back
+	 * on).  By sleeping for a short time, ssh gets a bigger
+	 * chance to do the right thing.  If child processes are
+	 * not ssh waiting for a password, then this tiny delay
+	 * shouldn't hurt anything. */
+	msleep(400);
+
+	/* If we're an rsync daemon listener (not a daemon server),
+	 * we'll exit with status 0 if we received SIGTERM. */
+	if (am_daemon && !am_server && sig_num == SIGTERM)
+		exit_cleanup(0);
+
+	/* If the signal arrived on the server side (or for the receiver
+	 * process on the client), we want to try to do a controlled shutdown
+	 * that lets the client side (generator process) know what happened.
+	 * To do this, we set a flag and let the normal process handle the
+	 * shutdown.  We only attempt this if multiplexed IO is in effect and
+	 * we didn't already set the flag. */
+	if (!got_kill_signal && (am_server || am_receiver)) {
+		got_kill_signal = sig_num;
+		called_from_signal_handler = 0;
+		return;
+	}
+
+	exit_cleanup(RERR_SIGNAL);
+}
+
+/* Finish off a file transfer: renaming the file and setting the file's
+ * attributes (e.g. permissions, ownership, etc.).  If the robust_rename()
+ * call is forced to copy the temp file and partialptr is both non-NULL and
+ * not an absolute path, we stage the file into the partial-dir and then
+ * rename it into place.  This returns 1 on success or 0 on failure. */
+int finish_transfer(const char *fname, const char *fnametmp,
+		    const char *fnamecmp, const char *partialptr,
+		    struct file_struct *file, int ok_to_set_time,
+		    int overwriting_basis)
+{
+	int ret;
+	const char *temp_copy_name = partialptr && *partialptr != '/' ? partialptr : NULL;
+
+	if (inplace) {
+		if (DEBUG_GTE(RECV, 1))
+			rprintf(FINFO, "finishing %s\n", fname);
+		fnametmp = fname;
+		goto do_set_file_attrs;
+	}
+
+	if (make_backups > 0 && overwriting_basis) {
+		int ok = make_backup(fname, False);
+		if (!ok)
+			exit_cleanup(RERR_FILEIO);
+		if (ok == 1 && fnamecmp == fname)
+			fnamecmp = get_backup_name(fname);
+	}
+
+	/* 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);
+
+	/* move tmp file over real file */
+	if (DEBUG_GTE(RECV, 1))
+		rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
+	ret = robust_rename(fnametmp, fname, temp_copy_name, file->mode);
+	if (ret < 0) {
+		rsyserr(FERROR_XFER, errno, "%s %s -> \"%s\"",
+			ret == -2 ? "copy" : "rename",
+			full_fname(fnametmp), fname);
+		if (!partialptr || (ret == -2 && temp_copy_name)
+		 || robust_rename(fnametmp, partialptr, NULL, file->mode) < 0)
+			do_unlink(fnametmp);
+		return 0;
+	}
+	if (ret == 0) {
+		/* The file was moved into place (not copied), so it's done. */
+		return 1;
+	}
+	/* The file was copied, so tweak the perms of the copied file.  If it
+	 * was copied to partialptr, move it into its final destination. */
+	fnametmp = temp_copy_name ? temp_copy_name : fname;
+
+  do_set_file_attrs:
+	set_file_attrs(fnametmp, file, NULL, fnamecmp,
+		       ok_to_set_time ? ATTRS_ACCURATE_TIME : ATTRS_SKIP_MTIME | ATTRS_SKIP_ATIME | ATTRS_SKIP_CRTIME);
+
+	if (temp_copy_name) {
+		if (do_rename(fnametmp, fname) < 0) {
+			rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\"",
+				full_fname(fnametmp), fname);
+			return 0;
+		}
+		handle_partial_dir(temp_copy_name, PDIR_DELETE);
+	}
+	return 1;
+}
+
+struct file_list *flist_for_ndx(int ndx, const char *fatal_error_loc)
+{
+	struct file_list *flist = cur_flist;
+
+	if (!flist && !(flist = first_flist))
+		goto not_found;
+
+	while (ndx < flist->ndx_start-1) {
+		if (flist == first_flist)
+			goto not_found;
+		flist = flist->prev;
+	}
+	while (ndx >= flist->ndx_start + flist->used) {
+		if (!(flist = flist->next))
+			goto not_found;
+	}
+	return flist;
+
+  not_found:
+	if (fatal_error_loc) {
+		int first, last;
+		if (first_flist) {
+			first = first_flist->ndx_start - 1;
+			last = first_flist->prev->ndx_start + first_flist->prev->used - 1;
+		} else {
+			first = 0;
+			last = -1;
+		}
+		rprintf(FERROR,
+			"File-list index %d not in %d - %d (%s) [%s]\n",
+			ndx, first, last, fatal_error_loc, who_am_i());
+		exit_cleanup(RERR_PROTOCOL);
+	}
+	return NULL;
+}
+
+const char *who_am_i(void)
+{
+	if (am_starting_up)
+		return am_server ? "server" : "client";
+	return am_sender ? "sender"
+	     : am_generator ? "generator"
+	     : am_receiver ? "receiver"
+	     : "Receiver"; /* pre-forked receiver */
+}