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-rw-r--r--rsync.h1486
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diff --git a/rsync.h b/rsync.h
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--- /dev/null
+++ b/rsync.h
@@ -0,0 +1,1486 @@
+/*
+ * Copyright (C) 1996, 2000 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
+ * 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.
+ */
+
+#define False 0
+#define True 1
+#define Unset (-1) /* Our BOOL values are always an int. */
+
+#define BLOCK_SIZE 700
+#define RSYNC_RSH_ENV "RSYNC_RSH"
+#define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO"
+
+#define RSYNC_NAME "rsync"
+/* RSYNCD_SYSCONF is now set in config.h */
+#define RSYNCD_USERCONF "rsyncd.conf"
+
+#define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock"
+#define URL_PREFIX "rsync://"
+
+#define SYMLINK_PREFIX "/rsyncd-munged/" /* This MUST have a trailing slash! */
+#define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1)
+
+#define BACKUP_SUFFIX "~"
+
+/* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is
+ incompatible with older versions :-( */
+#define CHAR_OFFSET 0
+
+/* These flags are only used during the flist transfer. */
+
+#define XMIT_TOP_DIR (1<<0)
+#define XMIT_SAME_MODE (1<<1)
+#define XMIT_SAME_RDEV_pre28 (1<<2) /* protocols 20 - 27 */
+#define XMIT_EXTENDED_FLAGS (1<<2) /* protocols 28 - now */
+#define XMIT_SAME_UID (1<<3)
+#define XMIT_SAME_GID (1<<4)
+#define XMIT_SAME_NAME (1<<5)
+#define XMIT_LONG_NAME (1<<6)
+#define XMIT_SAME_TIME (1<<7)
+
+#define XMIT_SAME_RDEV_MAJOR (1<<8) /* protocols 28 - now (devices only) */
+#define XMIT_NO_CONTENT_DIR (1<<8) /* protocols 30 - now (dirs only) */
+#define XMIT_HLINKED (1<<9) /* protocols 28 - now (non-dirs) */
+#define XMIT_SAME_DEV_pre30 (1<<10) /* protocols 28 - 29 */
+#define XMIT_USER_NAME_FOLLOWS (1<<10) /* protocols 30 - now */
+#define XMIT_RDEV_MINOR_8_pre30 (1<<11) /* protocols 28 - 29 */
+#define XMIT_GROUP_NAME_FOLLOWS (1<<11) /* protocols 30 - now */
+#define XMIT_HLINK_FIRST (1<<12) /* protocols 30 - now (HLINKED files only) */
+#define XMIT_IO_ERROR_ENDLIST (1<<12) /* protocols 31*- now (w/XMIT_EXTENDED_FLAGS) (also protocol 30 w/'f' compat flag) */
+#define XMIT_MOD_NSEC (1<<13) /* protocols 31 - now */
+#define XMIT_SAME_ATIME (1<<14) /* any protocol - restricted by command-line option */
+#define XMIT_UNUSED_15 (1<<15) /* unused flag bit */
+
+/* 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_CRTIME_EQ_MTIME (1<<17) /* any protocol - restricted by command-line option */
+
+/* These flags are used in the live flist data. */
+
+#define FLAG_TOP_DIR (1<<0) /* sender/receiver/generator */
+#define FLAG_OWNED_BY_US (1<<0) /* generator: set by make_file() for aux flists only */
+#define FLAG_FILE_SENT (1<<1) /* sender/receiver/generator */
+#define FLAG_DIR_CREATED (1<<1) /* generator */
+#define FLAG_CONTENT_DIR (1<<2) /* sender/receiver/generator */
+#define FLAG_MOUNT_DIR (1<<3) /* sender/generator (dirs only) */
+#define FLAG_SKIP_HLINK (1<<3) /* receiver/generator (w/FLAG_HLINKED) */
+#define FLAG_DUPLICATE (1<<4) /* sender */
+#define FLAG_MISSING_DIR (1<<4) /* generator */
+#define FLAG_HLINKED (1<<5) /* receiver/generator (checked on all types) */
+#define FLAG_HLINK_FIRST (1<<6) /* receiver/generator (w/FLAG_HLINKED) */
+#define FLAG_IMPLIED_DIR (1<<6) /* sender/receiver/generator (dirs only) */
+#define FLAG_HLINK_LAST (1<<7) /* receiver/generator */
+#define FLAG_HLINK_DONE (1<<8) /* receiver/generator (checked on all types) */
+#define FLAG_LENGTH64 (1<<9) /* sender/receiver/generator */
+#define FLAG_SKIP_GROUP (1<<10) /* receiver/generator */
+#define FLAG_TIME_FAILED (1<<11)/* generator */
+#define FLAG_MOD_NSEC (1<<12) /* sender/receiver/generator */
+
+/* These flags are passed to functions but not stored. */
+
+#define FLAG_DIVERT_DIRS (1<<16) /* sender, but must be unique */
+#define FLAG_PERHAPS_DIR (1<<17) /* generator */
+
+/* These flags are for get_dirlist(). */
+#define GDL_IGNORE_FILTER_RULES (1<<0)
+#define GDL_PERHAPS_DIR (1<<1)
+
+/* Some helper macros for matching bits. */
+#define BITS_SET(val,bits) (((val) & (bits)) == (bits))
+#define BITS_SETnUNSET(val,onbits,offbits) (((val) & ((onbits)|(offbits))) == (onbits))
+#define BITS_EQUAL(b1,b2,mask) (((unsigned)(b1) & (unsigned)(mask)) \
+ == ((unsigned)(b2) & (unsigned)(mask)))
+
+/* Update this if you make incompatible changes and ALSO update the
+ * SUBPROTOCOL_VERSION if it is not a final (official) release. */
+#define PROTOCOL_VERSION 31
+
+/* This is used when working on a new protocol version or for any unofficial
+ * protocol tweaks. It should be a non-zero value for each pre-release repo
+ * change that affects the protocol. The official pre-release versions should
+ * start with 1 (after incrementing the PROTOCOL_VERSION) and go up by 1 for
+ * each new protocol change. For unofficial changes, pick a fairly large
+ * random number that will hopefully not collide with anyone else's unofficial
+ * protocol. It must ALWAYS be 0 when the protocol goes final (and official)
+ * and NEVER before! When rsync negotiates a protocol match, it will only
+ * allow the newest protocol to be used if the SUBPROTOCOL_VERSION matches.
+ * All older protocol versions MUST be compatible with the final, official
+ * release of the protocol, so don't tweak the code to change the protocol
+ * behavior for an older protocol version. */
+#define SUBPROTOCOL_VERSION 0
+
+/* We refuse to interoperate with versions that are not in this range.
+ * Note that we assume we'll work with later versions: the onus is on
+ * people writing them to make sure that they don't send us anything
+ * we won't understand.
+ *
+ * Interoperation with old but supported protocol versions
+ * should cause a warning to be printed. At a future date
+ * the old protocol will become the minimum and
+ * compatibility code removed.
+ *
+ * There are two possible explanations for the limit at
+ * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that
+ * do not interoperate with us, and (more likely) so that we can
+ * detect an attempt to connect rsync to a non-rsync server, which is
+ * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and
+ * MAX_PROTOCOL_VERSION. */
+
+#define MIN_PROTOCOL_VERSION 20
+#define OLD_PROTOCOL_VERSION 25
+#define MAX_PROTOCOL_VERSION 40
+
+#define MIN_FILECNT_LOOKAHEAD 1000
+#define MAX_FILECNT_LOOKAHEAD 10000
+
+#define RSYNC_PORT 873
+
+#define SPARSE_WRITE_SIZE (1024)
+#define WRITE_SIZE (32*1024)
+#define CHUNK_SIZE (32*1024)
+#define MAX_MAP_SIZE (256*1024)
+#define IO_BUFFER_SIZE (32*1024)
+#define MAX_BLOCK_SIZE ((int32)1 << 17)
+
+/* For compatibility with older rsyncs */
+#define OLD_MAX_BLOCK_SIZE ((int32)1 << 29)
+
+#define ROUND_UP_1024(siz) ((siz) & (1024-1) ? ((siz) | (1024-1)) + 1 : (siz))
+
+#define IOERR_GENERAL (1<<0) /* For backward compatibility, this must == 1 */
+#define IOERR_VANISHED (1<<1)
+#define IOERR_DEL_LIMIT (1<<2)
+
+#define MAX_ARGS 1000
+#define MAX_BASIS_DIRS 20
+#define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100)
+
+#define COMPARE_DEST 1
+#define COPY_DEST 2
+#define LINK_DEST 3
+
+#define MPLEX_BASE 7
+
+#define NO_FILTERS 0
+#define SERVER_FILTERS 1
+#define ALL_FILTERS 2
+
+#define XFLG_FATAL_ERRORS (1<<0)
+#define XFLG_OLD_PREFIXES (1<<1)
+#define XFLG_ANCHORED2ABS (1<<2) /* leading slash indicates absolute */
+#define XFLG_ABS_IF_SLASH (1<<3) /* leading or interior slash is absolute */
+#define XFLG_DIR2WILD3 (1<<4) /* dir/ match gets trailing *** added */
+
+#define ATTRS_REPORT (1<<0)
+#define ATTRS_SKIP_MTIME (1<<1)
+#define ATTRS_ACCURATE_TIME (1<<2)
+#define ATTRS_SKIP_ATIME (1<<3)
+#define ATTRS_SKIP_CRTIME (1<<5)
+
+#define MSG_FLUSH 2
+#define FULL_FLUSH 1
+#define NORMAL_FLUSH 0
+
+#define PDIR_CREATE 1
+#define PDIR_DELETE 0
+
+/* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */
+#define FNAMECMP_BASIS_DIR_LOW 0x00 /* Must remain 0! */
+#define FNAMECMP_BASIS_DIR_HIGH 0x7F
+#define FNAMECMP_FNAME 0x80
+#define FNAMECMP_PARTIAL_DIR 0x81
+#define FNAMECMP_BACKUP 0x82
+#define FNAMECMP_FUZZY 0x83
+
+/* For use by the itemize_changes code */
+#define ITEM_REPORT_ATIME (1<<0)
+#define ITEM_REPORT_CHANGE (1<<1)
+#define ITEM_REPORT_SIZE (1<<2) /* regular files only */
+#define ITEM_REPORT_TIMEFAIL (1<<2) /* symlinks only */
+#define ITEM_REPORT_TIME (1<<3)
+#define ITEM_REPORT_PERMS (1<<4)
+#define ITEM_REPORT_OWNER (1<<5)
+#define ITEM_REPORT_GROUP (1<<6)
+#define ITEM_REPORT_ACL (1<<7)
+#define ITEM_REPORT_XATTR (1<<8)
+#define ITEM_REPORT_CRTIME (1<<10)
+#define ITEM_BASIS_TYPE_FOLLOWS (1<<11)
+#define ITEM_XNAME_FOLLOWS (1<<12)
+#define ITEM_IS_NEW (1<<13)
+#define ITEM_LOCAL_CHANGE (1<<14)
+#define ITEM_TRANSFER (1<<15)
+/* These are outside the range of the transmitted flags. */
+#define ITEM_MISSING_DATA (1<<16) /* used by log_formatted() */
+#define ITEM_DELETED (1<<17) /* used by log_formatted() */
+#define ITEM_MATCHED (1<<18) /* used by itemize() */
+
+#define SIGNIFICANT_ITEM_FLAGS (~(\
+ ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE))
+
+#define CFN_KEEP_DOT_DIRS (1<<0)
+#define CFN_KEEP_TRAILING_SLASH (1<<1)
+#define CFN_DROP_TRAILING_DOT_DIR (1<<2)
+#define CFN_COLLAPSE_DOT_DOT_DIRS (1<<3)
+#define CFN_REFUSE_DOT_DOT_DIRS (1<<4)
+
+#define SP_DEFAULT 0
+#define SP_KEEP_DOT_DIRS (1<<0)
+
+#define CD_NORMAL 0
+#define CD_SKIP_CHDIR 1
+
+/* Log-message categories. FLOG only goes to the log file, not the client;
+ * FCLIENT is the opposite. */
+enum logcode {
+ FNONE=0, /* never sent */
+ FERROR_XFER=1, FINFO=2, /* sent over socket for any protocol */
+ FERROR=3, FWARNING=4, /* sent over socket for protocols >= 30 */
+ FERROR_SOCKET=5, FLOG=6, /* only sent via receiver -> generator pipe */
+ FERROR_UTF8=8, /* only sent via receiver -> generator pipe */
+ FCLIENT=7 /* never transmitted (e.g. server converts to FINFO) */
+};
+
+/* Messages types that are sent over the message channel. The logcode
+ * values must all be present here with identical numbers. */
+enum msgcode {
+ MSG_DATA=0, /* raw data on the multiplexed stream */
+ MSG_ERROR_XFER=FERROR_XFER, MSG_INFO=FINFO, /* remote logging */
+ MSG_ERROR=FERROR, MSG_WARNING=FWARNING, /* protocol-30 remote logging */
+ MSG_ERROR_SOCKET=FERROR_SOCKET, /* sibling logging */
+ MSG_ERROR_UTF8=FERROR_UTF8, /* sibling logging */
+ MSG_LOG=FLOG, MSG_CLIENT=FCLIENT, /* sibling logging */
+ MSG_REDO=9, /* reprocess indicated flist index */
+ MSG_STATS=10, /* message has stats data for generator */
+ MSG_IO_ERROR=22,/* the sending side had an I/O error */
+ MSG_IO_TIMEOUT=33,/* tell client about a daemon's timeout value */
+ MSG_NOOP=42, /* a do-nothing message (legacy protocol-30 only) */
+ MSG_ERROR_EXIT=86, /* synchronize an error exit (siblings and protocol >= 31) */
+ MSG_SUCCESS=100,/* successfully updated indicated flist index */
+ MSG_DELETED=101,/* successfully deleted a file on receiving side */
+ MSG_NO_SEND=102,/* sender failed to open a file we wanted */
+};
+
+enum filetype {
+ FT_UNSUPPORTED, FT_REG, FT_DIR, FT_SYMLINK, FT_SPECIAL, FT_DEVICE
+};
+
+#define NDX_DONE -1
+#define NDX_FLIST_EOF -2
+#define NDX_DEL_STATS -3
+#define NDX_FLIST_OFFSET -101
+
+/* For calling delete_item() and delete_dir_contents(). */
+#define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
+#define DEL_RECURSE (1<<1) /* if dir, delete all contents */
+#define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
+#define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
+#define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
+#define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
+#define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
+#define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
+#define DEL_FOR_BACKUP (1<<8) /* the delete is for a backup operation */
+
+#define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
+
+enum delret {
+ DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
+};
+
+/* Defines for make_path() */
+#define MKP_DROP_NAME (1<<0) /* drop trailing filename or trailing slash */
+#define MKP_SKIP_SLASH (1<<1) /* skip one or more leading slashes */
+
+/* Defines for maybe_send_keepalive() */
+#define MSK_ALLOW_FLUSH (1<<0)
+#define MSK_ACTIVE_RECEIVER (1<<1)
+
+#include "errcode.h"
+
+#include "config.h"
+
+/* The default RSYNC_RSH is always set in config.h. */
+
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+# include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_BSD_STRING_H
+# include <bsd/string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+
+#if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H)
+#include <malloc.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#include <time.h>
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#else
+#ifdef HAVE_SYS_FCNTL_H
+#include <sys/fcntl.h>
+#endif
+#endif
+
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#ifdef HAVE_SYS_FILIO_H
+#include <sys/filio.h>
+#endif
+
+#include <signal.h>
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+#ifdef HAVE_CTYPE_H
+#include <ctype.h>
+#endif
+#ifdef HAVE_GRP_H
+#include <grp.h>
+#endif
+#include <errno.h>
+
+#ifdef HAVE_UTIME_H
+#include <utime.h>
+#endif
+
+#if defined HAVE_UTIMENSAT || defined HAVE_LUTIMES || defined HAVE_SETATTRLIST
+#define CAN_SET_SYMLINK_TIMES 1
+#endif
+
+#if defined HAVE_LCHOWN || defined CHOWN_MODIFIES_SYMLINK
+#define CAN_CHOWN_SYMLINK 1
+#endif
+
+#if defined HAVE_LCHMOD || defined HAVE_SETATTRLIST
+#define CAN_CHMOD_SYMLINK 1
+#endif
+
+#if defined HAVE_UTIMENSAT || defined HAVE_SETATTRLIST
+#define CAN_SET_NSEC 1
+#endif
+
+#ifdef CAN_SET_NSEC
+#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
+#define ST_MTIME_NSEC st_mtim.tv_nsec
+#define ST_ATIME_NSEC st_atim.tv_nsec
+#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
+#define ST_MTIME_NSEC st_mtimensec
+#define ST_ATIME_NSEC st_atimensec
+#elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
+#define ST_MTIME_NSEC st_mtimespec.tv_nsec
+#define ST_ATIME_NSEC st_atimespec.tv_nsec
+#endif
+#endif
+
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#ifdef HAVE_SYS_MODE_H
+/* apparently AIX needs this for S_ISLNK */
+#ifndef S_ISLNK
+#include <sys/mode.h>
+#endif
+#endif
+
+/* these are needed for the uid/gid mapping code */
+#include <pwd.h>
+#include <grp.h>
+
+#include <stdarg.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#include <syslog.h>
+#ifdef HAVE_SYS_FILE_H
+#include <sys/file.h>
+#endif
+
+#ifdef HAVE_DIRENT_H
+# include <dirent.h>
+#else
+# define dirent direct
+# ifdef HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# ifdef HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# ifdef HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
+
+#ifdef MAJOR_IN_MKDEV
+#include <sys/mkdev.h>
+# if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__)
+# define makedev mkdev
+# endif
+#elif defined MAJOR_IN_SYSMACROS
+#include <sys/sysmacros.h>
+#endif
+
+#ifdef MAKEDEV_TAKES_3_ARGS
+#define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor)
+#else
+#ifndef __TANDEM
+#define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
+#else
+# define major DEV_TO_MAJOR
+# define minor DEV_TO_MINOR
+# define MAKEDEV MAJORMINOR_TO_DEV
+#endif
+#endif
+
+#ifdef __TANDEM
+# include <floss.h(floss_read,floss_write,floss_fork,floss_execvp)>
+# include <floss.h(floss_getpwuid,floss_select,floss_seteuid)>
+# define S_IEXEC S_IXUSR
+# define ROOT_UID 65535
+#else
+# define ROOT_UID 0
+#endif
+
+#ifdef HAVE_COMPAT_H
+#include <compat.h>
+#endif
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#if defined USE_ICONV_OPEN && defined HAVE_ICONV_H
+#include <iconv.h>
+#ifndef ICONV_CONST
+#define ICONV_CONST
+#endif
+#else
+#ifdef ICONV_CONST
+#undef ICONV_CONST
+#endif
+#ifdef ICONV_OPTION
+#undef ICONV_OPTION
+#endif
+#ifdef iconv_t
+#undef iconv_t
+#endif
+#define iconv_t int
+#endif
+
+#include <assert.h>
+
+#include "lib/pool_alloc.h"
+
+#ifndef HAVE_ID_T
+typedef unsigned int id_t;
+#endif
+#ifndef HAVE_PID_T
+typedef int pid_t;
+#endif
+#ifndef HAVE_MODE_T
+typedef unsigned int mode_t;
+#endif
+#ifndef HAVE_OFF_T
+typedef long off_t;
+#undef SIZEOF_OFF_T
+#define SIZEOF_OFF_T SIZEOF_LONG
+#endif
+#ifndef HAVE_SIZE_T
+typedef unsigned int size_t;
+#endif
+
+#define BOOL int
+
+#ifndef uchar
+#define uchar unsigned char
+#endif
+
+#ifdef SIGNED_CHAR_OK
+#define schar signed char
+#else
+#define schar char
+#endif
+
+#ifndef int16
+#if SIZEOF_INT16_T == 2
+# define int16 int16_t
+#else
+# define int16 short
+#endif
+#endif
+
+#ifndef uint16
+#if SIZEOF_UINT16_T == 2
+# define uint16 uint16_t
+#else
+# define uint16 unsigned int16
+#endif
+#endif
+
+#if !defined __APPLE__ || defined HAVE_GETATTRLIST
+#define SUPPORT_ATIMES 1
+#endif
+
+#if defined HAVE_GETATTRLIST || defined __CYGWIN__
+#define SUPPORT_CRTIMES 1
+#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. */
+#ifndef int32
+#if SIZEOF_INT32_T == 4
+# define int32 int32_t
+# define SIZEOF_INT32 4
+#elif SIZEOF_INT == 4
+# define int32 int
+# define SIZEOF_INT32 4
+#elif SIZEOF_LONG == 4
+# define int32 long
+# define SIZEOF_INT32 4
+#elif SIZEOF_SHORT == 4
+# define int32 short
+# define SIZEOF_INT32 4
+#elif SIZEOF_INT > 4
+# define int32 int
+# define SIZEOF_INT32 SIZEOF_INT
+#elif SIZEOF_LONG > 4
+# define int32 long
+# define SIZEOF_INT32 SIZEOF_LONG
+#else
+# error Could not find a 32-bit integer variable
+#endif
+#else
+# define SIZEOF_INT32 4
+#endif
+
+#ifndef uint32
+#if SIZEOF_UINT32_T == 4
+# define uint32 uint32_t
+#else
+# define uint32 unsigned int32
+#endif
+#endif
+
+#if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64
+#define OFF_T off_t
+#define STRUCT_STAT struct stat
+#define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF_T
+#else
+#define OFF_T off64_t
+#define STRUCT_STAT struct stat64
+#define USE_STAT64_FUNCS 1
+#define SIZEOF_CAPITAL_OFF_T SIZEOF_OFF64_T
+#endif
+
+/* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF
+ * that's the maximum size the file system can handle and there is no
+ * 64-bit type available. The rsync source must therefore take steps
+ * to ensure that any code that really requires a 64-bit integer has
+ * it (e.g. the checksum code uses two 32-bit integers for its 64-bit
+ * counter). */
+#if SIZEOF_INT64_T == 8
+# define int64 int64_t
+# define SIZEOF_INT64 8
+#elif SIZEOF_LONG == 8
+# define int64 long
+# define SIZEOF_INT64 8
+#elif SIZEOF_INT == 8
+# define int64 int
+# define SIZEOF_INT64 8
+#elif SIZEOF_LONG_LONG == 8
+# define int64 long long
+# define SIZEOF_INT64 8
+#elif SIZEOF_OFF64_T == 8
+# define int64 off64_t
+# define SIZEOF_INT64 8
+#elif SIZEOF_OFF_T == 8
+# define int64 off_t
+# define SIZEOF_INT64 8
+#elif SIZEOF_INT > 8
+# define int64 int
+# define SIZEOF_INT64 SIZEOF_INT
+#elif SIZEOF_LONG > 8
+# define int64 long
+# define SIZEOF_INT64 SIZEOF_LONG
+#elif SIZEOF_LONG_LONG > 8
+# define int64 long long
+# define SIZEOF_INT64 SIZEOF_LONG_LONG
+#else
+/* As long as it gets... */
+# define int64 off_t
+# define SIZEOF_INT64 SIZEOF_OFF_T
+#endif
+
+#define HT_KEY32 0
+#define HT_KEY64 1
+
+struct hashtable {
+ void *nodes;
+ int32 size, entries;
+ uint32 node_size;
+ short key64;
+};
+
+struct ht_int32_node {
+ void *data;
+ int32 key;
+};
+
+struct ht_int64_node {
+ void *data;
+ int64 key;
+};
+
+#define HT_NODE(tbl, bkts, i) ((void*)((char*)(bkts) + (i)*(tbl)->node_size))
+#define HT_KEY(node, k64) ((k64)? ((struct ht_int64_node*)(node))->key \
+ : (int64)((struct ht_int32_node*)(node))->key)
+
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+
+#ifndef MAX
+#define MAX(a,b) ((a)>(b)?(a):(b))
+#endif
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 256
+#endif
+
+#define SUM_LENGTH 16
+#define SHORT_SUM_LENGTH 2
+#define BLOCKSUM_BIAS 10
+
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 1024
+#endif
+
+/* We want a roomy line buffer that can hold more than MAXPATHLEN,
+ * and significantly more than an overly short MAXPATHLEN. */
+#if MAXPATHLEN < 4096
+#define BIGPATHBUFLEN (4096+1024)
+#else
+#define BIGPATHBUFLEN (MAXPATHLEN+1024)
+#endif
+
+#ifndef NAME_MAX
+#define NAME_MAX 255
+#endif
+
+#ifndef SIZE_MAX
+#define SIZE_MAX ((size_t)-1)
+#endif
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+#ifndef IN_LOOPBACKNET
+#define IN_LOOPBACKNET 127
+#endif
+
+#if HAVE_UNIXWARE_ACLS|HAVE_SOLARIS_ACLS|HAVE_HPUX_ACLS
+#define ACLS_NEED_MASK 1
+#endif
+
+#if defined HAVE_FALLOCATE || HAVE_SYS_FALLOCATE
+#ifdef HAVE_LINUX_FALLOC_H
+#include <linux/falloc.h>
+#endif
+#ifdef FALLOC_FL_KEEP_SIZE
+#define SUPPORT_PREALLOCATION 1
+#elif defined HAVE_FTRUNCATE
+#define SUPPORT_PREALLOCATION 1
+#define PREALLOCATE_NEEDS_TRUNCATE 1
+#endif
+#else /* !fallocate */
+#if defined HAVE_EFFICIENT_POSIX_FALLOCATE && defined HAVE_FTRUNCATE
+#define SUPPORT_PREALLOCATION 1
+#define PREALLOCATE_NEEDS_TRUNCATE 1
+#endif
+#endif
+
+#if SIZEOF_CHARP == 4
+# define PTRS_ARE_32 1
+# define PTR_EXTRA_CNT 1
+#elif SIZEOF_CHARP == 8
+# define PTRS_ARE_64 1
+# define PTR_EXTRA_CNT EXTRA64_CNT
+#else
+# error Character pointers are not 4 or 8 bytes.
+#endif
+
+#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+#define USE_FLEXIBLE_ARRAY 1
+#define SIZE_T_FMT_MOD "z" /* printf supports %zd */
+#define SIZE_T_FMT_CAST size_t
+#else
+#define SIZE_T_FMT_MOD "l" /* printf supports %ld */
+#define SIZE_T_FMT_CAST long
+#endif
+
+union file_extras {
+ int32 num;
+ uint32 unum;
+#ifdef PTRS_ARE_32
+ const char* ptr;
+#endif
+};
+
+union file_extras64 {
+ int64 num;
+#ifdef PTRS_ARE_64
+ const char* ptr;
+#endif
+};
+
+struct file_struct {
+ const char *dirname; /* The dir info inside the transfer */
+ time_t modtime; /* When the item was last modified */
+ uint32 len32; /* Lowest 32 bits of the file's length */
+ uint16 mode; /* The item's type and permissions */
+ uint16 flags; /* The FLAG_* bits for this item */
+#ifdef USE_FLEXIBLE_ARRAY
+ const char basename[]; /* The basename (AKA filename) follows */
+#else
+ const char basename[1]; /* A kluge that should work like a flexible array */
+#endif
+};
+
+extern int file_extra_cnt;
+extern int inc_recurse;
+extern int atimes_ndx;
+extern int crtimes_ndx;
+extern int pathname_ndx;
+extern int depth_ndx;
+extern int uid_ndx;
+extern int gid_ndx;
+extern int acls_ndx;
+extern int xattrs_ndx;
+extern int file_sum_extra_cnt;
+
+#ifdef USE_FLEXIBLE_ARRAY
+#define FILE_STRUCT_LEN (sizeof (struct file_struct))
+#else
+#define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
+#endif
+#define EXTRA_LEN (sizeof (union file_extras))
+#define DEV_EXTRA_CNT 2
+#define DIRNODE_EXTRA_CNT 3
+#define EXTRA64_CNT ((sizeof (union file_extras64) + EXTRA_LEN - 1) / EXTRA_LEN)
+#define SUM_EXTRA_CNT file_sum_extra_cnt
+
+#define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
+#define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
+
+/* These are guaranteed to be allocated first in the array so that they
+ * are aligned for direct int64-pointer access. */
+#define REQ_EXTRA64(f,ndx) ((union file_extras64*)REQ_EXTRA(f,ndx))
+
+#define NSEC_BUMP(f) ((f)->flags & FLAG_MOD_NSEC ? 1 : 0)
+#define LEN64_BUMP(f) ((f)->flags & FLAG_LENGTH64 ? 1 : 0)
+#define START_BUMP(f) (NSEC_BUMP(f) + LEN64_BUMP(f))
+#define HLINK_BUMP(f) ((f)->flags & (FLAG_HLINKED|FLAG_HLINK_DONE) ? inc_recurse+1 : 0)
+#define ACL_BUMP(f) (acls_ndx ? 1 : 0)
+
+/* The length applies to all items. */
+#if SIZEOF_INT64 < 8
+#define F_LENGTH(f) ((int64)(f)->len32)
+#else
+#define F_HIGH_LEN(f) (OPT_EXTRA(f, NSEC_BUMP(f))->unum)
+#define F_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 ? (int64)F_HIGH_LEN(f) << 32 : 0))
+#endif
+
+#define F_MOD_NSEC(f) OPT_EXTRA(f, 0)->unum
+#define F_MOD_NSEC_or_0(f) ((f)->flags & FLAG_MOD_NSEC ? F_MOD_NSEC(f) : 0)
+
+/* If there is a symlink string, it is always right after the basename */
+#define F_SYMLINK(f) ((f)->basename + strlen((f)->basename) + 1)
+
+/* The sending side always has this available: */
+#ifdef PTRS_ARE_32
+#define F_PATHNAME(f) REQ_EXTRA(f, pathname_ndx)->ptr
+#else
+#define F_PATHNAME(f) REQ_EXTRA64(f, pathname_ndx)->ptr
+#endif
+
+/* The receiving side always has this available: */
+#define F_DEPTH(f) REQ_EXTRA(f, depth_ndx)->num
+
+/* 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
+#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
+#define F_ATIME(f) REQ_EXTRA64(f, atimes_ndx)->num
+#define F_CRTIME(f) REQ_EXTRA64(f, crtimes_ndx)->num
+
+/* These items are per-entry optional: */
+#define F_HL_GNUM(f) OPT_EXTRA(f, START_BUMP(f))->num /* non-dirs */
+#define F_HL_PREV(f) OPT_EXTRA(f, START_BUMP(f)+inc_recurse)->num /* non-dirs */
+#define F_DIR_NODE_P(f) (&OPT_EXTRA(f, START_BUMP(f) \
+ + DIRNODE_EXTRA_CNT - 1)->num) /* sender dirs */
+#define F_DIR_RELNAMES_P(f) (&OPT_EXTRA(f, START_BUMP(f) + DIRNODE_EXTRA_CNT \
+ + PTR_EXTRA_CNT - 1)->num) /* sender dirs */
+#define F_DIR_DEFACL(f) OPT_EXTRA(f, START_BUMP(f))->unum /* receiver dirs */
+#define F_DIR_DEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + ACL_BUMP(f) \
+ + DEV_EXTRA_CNT - 1)->unum) /* receiver dirs */
+
+/* This optional item might follow an F_HL_*() item. */
+#define F_RDEV_P(f) (&OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) + DEV_EXTRA_CNT - 1)->unum)
+
+/* The sum is only present on regular files. */
+#define F_SUM(f) ((char*)OPT_EXTRA(f, START_BUMP(f) + HLINK_BUMP(f) \
+ + SUM_EXTRA_CNT - 1))
+
+/* Some utility defines: */
+#define F_IS_ACTIVE(f) (f)->basename[0]
+#define F_IS_HLINKED(f) ((f)->flags & FLAG_HLINKED)
+
+#define F_HLINK_NOT_FIRST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_FIRST)
+#define F_HLINK_NOT_LAST(f) BITS_SETnUNSET((f)->flags, FLAG_HLINKED, FLAG_HLINK_LAST)
+
+/* These access the F_DIR_DEV_P() and F_RDEV_P() values: */
+#define DEV_MAJOR(a) (a)[0]
+#define DEV_MINOR(a) (a)[1]
+
+/* These access the F_DIRS_NODE_P() values: */
+#define DIR_PARENT(a) (a)[0]
+#define DIR_FIRST_CHILD(a) (a)[1]
+#define DIR_NEXT_SIBLING(a) (a)[2]
+
+#define IS_MISSING_FILE(statbuf) ((statbuf).st_mode == 0)
+
+/*
+ * Start the flist array at FLIST_START entries and grow it
+ * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR
+ */
+#define FLIST_START (32)
+#define FLIST_START_LARGE (32 * 1024)
+#define FLIST_LINEAR (FLIST_START_LARGE * 512)
+
+/*
+ * Extent size for allocation pools: A minimum size of 128KB
+ * is needed to mmap them so that freeing will release the
+ * space to the OS.
+ *
+ * Larger sizes reduce leftover fragments and speed free calls
+ * (when they happen). Smaller sizes increase the chance of
+ * freed allocations freeing whole extents.
+ */
+#define NORMAL_EXTENT (256 * 1024)
+#define SMALL_EXTENT (128 * 1024)
+
+#define FLIST_TEMP (1<<1)
+
+struct file_list {
+ struct file_list *next, *prev;
+ struct file_struct **files, **sorted;
+ alloc_pool_t file_pool;
+ void *pool_boundary;
+ int used, malloced;
+ int low, high; /* 0-relative index values excluding empties */
+ int ndx_start; /* the start offset for inc_recurse mode */
+ int flist_num; /* 1-relative file_list number or 0 */
+ int parent_ndx; /* dir_flist index of parent directory */
+ int in_progress, to_redo;
+};
+
+#define SUMFLG_SAME_OFFSET (1<<0)
+
+struct sum_buf {
+ OFF_T offset; /**< offset in file of this chunk */
+ int32 len; /**< length of chunk of file */
+ uint32 sum1; /**< simple checksum */
+ int32 chain; /**< next hash-table collision */
+ short flags; /**< flag bits */
+ char sum2[SUM_LENGTH]; /**< checksum */
+};
+
+struct sum_struct {
+ OFF_T flength; /**< total file length */
+ struct sum_buf *sums; /**< points to info for each chunk */
+ int32 count; /**< how many chunks */
+ int32 blength; /**< block_length */
+ int32 remainder; /**< flength % block_length */
+ int s2length; /**< sum2_length */
+};
+
+struct map_struct {
+ OFF_T file_size; /* File size (from stat) */
+ OFF_T p_offset; /* Window start */
+ OFF_T p_fd_offset; /* offset of cursor in fd ala lseek */
+ char *p; /* Window pointer */
+ int32 p_size; /* Largest window size we allocated */
+ int32 p_len; /* Latest (rounded) window size */
+ int32 def_window_size; /* Default window size */
+ int fd; /* File Descriptor */
+ int status; /* first errno from read errors */
+};
+
+#define NAME_IS_FILE (0) /* filter name as a file */
+#define NAME_IS_DIR (1<<0) /* filter name as a dir */
+#define NAME_IS_XATTR (1<<2) /* filter name as an xattr */
+
+#define FILTRULE_WILD (1<<0) /* pattern has '*', '[', and/or '?' */
+#define FILTRULE_WILD2 (1<<1) /* pattern has '**' */
+#define FILTRULE_WILD2_PREFIX (1<<2) /* pattern starts with "**" */
+#define FILTRULE_WILD3_SUFFIX (1<<3) /* pattern ends with "***" */
+#define FILTRULE_ABS_PATH (1<<4) /* path-match on absolute path */
+#define FILTRULE_INCLUDE (1<<5) /* this is an include, not an exclude */
+#define FILTRULE_DIRECTORY (1<<6) /* this matches only directories */
+#define FILTRULE_WORD_SPLIT (1<<7) /* split rules on whitespace */
+#define FILTRULE_NO_INHERIT (1<<8) /* don't inherit these rules */
+#define FILTRULE_NO_PREFIXES (1<<9) /* parse no prefixes from patterns */
+#define FILTRULE_MERGE_FILE (1<<10)/* specifies a file to merge */
+#define FILTRULE_PERDIR_MERGE (1<<11)/* merge-file is searched per-dir */
+#define FILTRULE_EXCLUDE_SELF (1<<12)/* merge-file name should be excluded */
+#define FILTRULE_FINISH_SETUP (1<<13)/* per-dir merge file needs setup */
+#define FILTRULE_NEGATE (1<<14)/* rule matches when pattern does not */
+#define FILTRULE_CVS_IGNORE (1<<15)/* rule was -C or :C */
+#define FILTRULE_SENDER_SIDE (1<<16)/* rule applies to the sending side */
+#define FILTRULE_RECEIVER_SIDE (1<<17)/* rule applies to the receiving side */
+#define FILTRULE_CLEAR_LIST (1<<18)/* this item is the "!" token */
+#define FILTRULE_PERISHABLE (1<<19)/* perishable if parent dir goes away */
+#define FILTRULE_XATTR (1<<20)/* rule only applies to xattr names */
+
+#define FILTRULES_SIDES (FILTRULE_SENDER_SIDE | FILTRULE_RECEIVER_SIDE)
+
+typedef struct filter_struct {
+ struct filter_struct *next;
+ char *pattern;
+ uint32 rflags;
+ union {
+ int slash_cnt;
+ struct filter_list_struct *mergelist;
+ } u;
+ uchar elide;
+} filter_rule;
+
+typedef struct filter_list_struct {
+ filter_rule *head;
+ filter_rule *tail;
+ char *debug_type;
+} filter_rule_list;
+
+struct stats {
+ int64 total_size;
+ int64 total_transferred_size;
+ int64 total_written;
+ int64 total_read;
+ int64 literal_data;
+ int64 matched_data;
+ int64 flist_buildtime;
+ int64 flist_xfertime;
+ int64 flist_size;
+ int num_files, num_dirs, num_symlinks, num_devices, num_specials;
+ int created_files, created_dirs, created_symlinks, created_devices, created_specials;
+ int deleted_files, deleted_dirs, deleted_symlinks, deleted_devices, deleted_specials;
+ int xferred_files;
+};
+
+struct chmod_mode_struct;
+
+struct flist_ndx_item {
+ struct flist_ndx_item *next;
+ int ndx;
+};
+
+typedef struct {
+ struct flist_ndx_item *head, *tail;
+} flist_ndx_list;
+
+#define EMPTY_ITEM_LIST {NULL, 0, 0}
+
+typedef struct {
+ void *items;
+ size_t count;
+ size_t malloced;
+} item_list;
+
+#define EXPAND_ITEM_LIST(lp, type, incr) \
+ (type*)expand_item_list(lp, sizeof (type), #type, incr)
+
+#define EMPTY_XBUF {NULL, 0, 0, 0}
+
+typedef struct {
+ char *buf;
+ size_t pos; /* pos = read pos in the buf */
+ size_t len; /* len = chars following pos */
+ size_t size; /* size = total space in buf */
+} xbuf;
+
+#define INIT_XBUF(xb, str, ln, sz) (xb).buf = (str), (xb).len = (ln), (xb).size = (sz), (xb).pos = 0
+#define INIT_XBUF_STRLEN(xb, str) (xb).buf = (str), (xb).len = strlen((xb).buf), (xb).size = (size_t)-1, (xb).pos = 0
+/* This one is used to make an output xbuf based on a char[] buffer: */
+#define INIT_CONST_XBUF(xb, bf) (xb).buf = (bf), (xb).size = sizeof (bf), (xb).len = (xb).pos = 0
+
+#define ICB_EXPAND_OUT (1<<0)
+#define ICB_INCLUDE_BAD (1<<1)
+#define ICB_INCLUDE_INCOMPLETE (1<<2)
+#define ICB_CIRCULAR_OUT (1<<3)
+#define ICB_INIT (1<<4)
+
+#define IOBUF_KEEP_BUFS 0
+#define IOBUF_FREE_BUFS 1
+
+#define MPLX_SWITCHING IOBUF_KEEP_BUFS
+#define MPLX_ALL_DONE IOBUF_FREE_BUFS
+#define MPLX_TO_BUFFERED 2
+
+#define RL_EOL_NULLS (1<<0)
+#define RL_DUMP_COMMENTS (1<<1)
+#define RL_CONVERT (1<<2)
+
+typedef struct {
+ char name_type;
+#ifdef USE_FLEXIBLE_ARRAY
+ char fname[]; /* has variable size */
+#else
+ char fname[1]; /* A kluge that should work like a flexible array */
+#endif
+} relnamecache;
+
+#ifdef USE_FLEXIBLE_ARRAY
+#define RELNAMECACHE_LEN (sizeof (relnamecache))
+#else
+#define RELNAMECACHE_LEN (offsetof(relnamecache, fname))
+#endif
+
+#include "byteorder.h"
+#include "lib/mdigest.h"
+#include "lib/wildmatch.h"
+#include "lib/permstring.h"
+#include "lib/addrinfo.h"
+
+#ifndef __GNUC__
+#define __attribute__(x)
+#else
+# if __GNUC__ <= 2
+# define NORETURN
+# endif
+#endif
+
+#define UNUSED(x) x __attribute__((__unused__))
+#ifndef NORETURN
+#define NORETURN __attribute__((__noreturn__))
+#endif
+
+typedef struct {
+ STRUCT_STAT st;
+ time_t crtime;
+#ifdef SUPPORT_ACLS
+ struct rsync_acl *acc_acl; /* access ACL */
+ struct rsync_acl *def_acl; /* default ACL */
+#endif
+#ifdef SUPPORT_XATTRS
+ item_list *xattr;
+#endif
+} stat_x;
+
+#define ACL_READY(sx) ((sx).acc_acl != NULL)
+#define XATTR_READY(sx) ((sx).xattr != NULL)
+
+#define CLVL_NOT_SPECIFIED INT_MIN
+
+#define CPRES_AUTO (-1)
+#define CPRES_NONE 0
+#define CPRES_ZLIB 1
+#define CPRES_ZLIBX 2
+#define CPRES_LZ4 3
+#define CPRES_ZSTD 4
+
+#define NSTR_CHECKSUM 0
+#define NSTR_COMPRESS 1
+
+struct name_num_item {
+ int num, flags;
+ const char *name;
+ struct name_num_item *main_nni;
+};
+
+struct name_num_obj {
+ const char *type;
+ struct name_num_item *negotiated_nni;
+ uchar *saw;
+ int saw_len;
+ struct name_num_item *list;
+};
+
+#ifdef EXTERNAL_ZLIB
+#define read_buf read_buf_
+#endif
+
+#ifndef __cplusplus
+#include "proto.h"
+#endif
+
+#ifndef SUPPORT_XATTRS
+#define x_stat(fn,fst,xst) do_stat(fn,fst)
+#define x_lstat(fn,fst,xst) do_lstat(fn,fst)
+#define x_fstat(fd,fst,xst) do_fstat(fd,fst)
+#endif
+
+/* We have replacement versions of these if they're missing. */
+#ifndef HAVE_ASPRINTF
+int asprintf(char **ptr, const char *format, ...);
+#endif
+
+#ifndef HAVE_VASPRINTF
+int vasprintf(char **ptr, const char *format, va_list ap);
+#endif
+
+#if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF
+#define vsnprintf rsync_vsnprintf
+int vsnprintf(char *str, size_t count, const char *fmt, va_list args);
+#endif
+
+#if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF
+#define snprintf rsync_snprintf
+int snprintf(char *str, size_t count, const char *fmt,...);
+#endif
+
+#ifndef HAVE_STRERROR
+extern char *sys_errlist[];
+#define strerror(i) sys_errlist[i]
+#endif
+
+#ifndef HAVE_STRCHR
+# define strchr index
+# define strrchr rindex
+#endif
+
+#ifndef HAVE_ERRNO_DECL
+extern int errno;
+#endif
+
+#ifdef HAVE_READLINK
+#define SUPPORT_LINKS 1
+#if !defined NO_SYMLINK_XATTRS && !defined NO_SYMLINK_USER_XATTRS
+#define do_readlink(path, buf, bufsiz) readlink(path, buf, bufsiz)
+#endif
+#endif
+#ifdef HAVE_LINK
+#define SUPPORT_HARD_LINKS 1
+#endif
+
+#ifdef HAVE_SIGACTION
+#define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL)
+#define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h)
+#else
+#define SIGACTION(n,h) signal(n,h)
+#endif
+
+#ifndef EWOULDBLOCK
+#define EWOULDBLOCK EAGAIN
+#endif
+
+#ifndef STDIN_FILENO
+#define STDIN_FILENO 0
+#endif
+
+#ifndef STDOUT_FILENO
+#define STDOUT_FILENO 1
+#endif
+
+#ifndef STDERR_FILENO
+#define STDERR_FILENO 2
+#endif
+
+#ifndef S_IRUSR
+#define S_IRUSR 0400
+#endif
+
+#ifndef S_IWUSR
+#define S_IWUSR 0200
+#endif
+
+#ifndef ACCESSPERMS
+#define ACCESSPERMS 0777
+#endif
+
+#ifndef S_ISVTX
+#define S_ISVTX 0
+#endif
+
+#define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS)
+
+#ifndef _S_IFMT
+#define _S_IFMT 0170000
+#endif
+
+#ifndef _S_IFLNK
+#define _S_IFLNK 0120000
+#endif
+
+#ifndef S_ISLNK
+#define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK))
+#endif
+
+#ifndef S_ISBLK
+#define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK))
+#endif
+
+#ifndef S_ISCHR
+#define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR))
+#endif
+
+#ifndef S_ISSOCK
+#ifdef _S_IFSOCK
+#define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK))
+#else
+#define S_ISSOCK(mode) (0)
+#endif
+#endif
+
+#ifndef S_ISFIFO
+#ifdef _S_IFIFO
+#define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO))
+#else
+#define S_ISFIFO(mode) (0)
+#endif
+#endif
+
+#ifndef S_ISDIR
+#define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
+#endif
+
+#ifndef S_ISREG
+#define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
+#endif
+
+/* work out what fcntl flag to use for non-blocking */
+#ifdef O_NONBLOCK
+# define NONBLOCK_FLAG O_NONBLOCK
+#elif defined SYSV
+# define NONBLOCK_FLAG O_NDELAY
+#else
+# define NONBLOCK_FLAG FNDELAY
+#endif
+
+#ifndef INADDR_LOOPBACK
+#define INADDR_LOOPBACK 0x7f000001
+#endif
+
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+#define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode))
+#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode))
+
+/* Initial mask on permissions given to temporary files. Mask off setuid
+ bits and group access because of potential race-condition security
+ holes, and mask other access because mode 707 is bizarre */
+#define INITACCESSPERMS 0700
+
+/* handler for null strings in printf format */
+#define NS(s) ((s)?(s):"<NULL>")
+
+extern char *do_calloc;
+
+/* Convenient wrappers for malloc and realloc. Use them. */
+#define new(type) ((type*)my_alloc(NULL, sizeof (type), 1, __FILE__, __LINE__))
+#define new0(type) ((type*)my_alloc(do_calloc, sizeof (type), 1, __FILE__, __LINE__))
+#define realloc_buf(ptr, num) my_alloc((ptr), (num), 1, __FILE__, __LINE__)
+
+#define new_array(type, num) ((type*)my_alloc(NULL, (num), sizeof (type), __FILE__, __LINE__))
+#define new_array0(type, num) ((type*)my_alloc(do_calloc, (num), sizeof (type), __FILE__, __LINE__))
+#define realloc_array(ptr, type, num) ((type*)my_alloc((ptr), (num), sizeof (type), __FILE__, __LINE__))
+
+#undef strdup
+#define strdup(s) my_strdup(s, __FILE__, __LINE__)
+
+#define out_of_memory(msg) _out_of_memory(msg, __FILE__, __LINE__)
+#define overflow_exit(msg) _overflow_exit(msg, __FILE__, __LINE__)
+
+/* use magic gcc attributes to catch format errors */
+ void rprintf(enum logcode , const char *, ...)
+ __attribute__((format (printf, 2, 3)))
+;
+
+/* This is just like rprintf, but it also tries to print some
+ * representation of the error code. Normally errcode = errno. */
+void rsyserr(enum logcode, int, const char *, ...)
+ __attribute__((format (printf, 3, 4)))
+ ;
+
+/* Make sure that the O_BINARY flag is defined. */
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#ifndef HAVE_STRLCPY
+size_t strlcpy(char *d, const char *s, size_t bufsize);
+#endif
+
+#ifndef HAVE_STRLCAT
+size_t strlcat(char *d, const char *s, size_t bufsize);
+#endif
+
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(stat) ((int)(((stat)>>8)&0xFF))
+#endif
+#ifndef WIFEXITED
+#define WIFEXITED(stat) ((int)((stat)&0xFF) == 0)
+#endif
+
+#define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__)
+
+#ifdef HAVE_GETEUID
+#define MY_UID() geteuid()
+#else
+#define MY_UID() getuid()
+#endif
+
+#ifdef HAVE_GETEGID
+#define MY_GID() getegid()
+#else
+#define MY_GID() getgid()
+#endif
+
+#ifdef FORCE_FD_ZERO_MEMSET
+#undef FD_ZERO
+#define FD_ZERO(fdsetp) memset(fdsetp, 0, sizeof (fd_set))
+#endif
+
+extern short info_levels[], debug_levels[];
+
+#define INFO_GTE(flag, lvl) (info_levels[INFO_##flag] >= (lvl))
+#define INFO_EQ(flag, lvl) (info_levels[INFO_##flag] == (lvl))
+#define DEBUG_GTE(flag, lvl) (debug_levels[DEBUG_##flag] >= (lvl))
+#define DEBUG_EQ(flag, lvl) (debug_levels[DEBUG_##flag] == (lvl))
+
+#define INFO_BACKUP 0
+#define INFO_COPY (INFO_BACKUP+1)
+#define INFO_DEL (INFO_COPY+1)
+#define INFO_FLIST (INFO_DEL+1)
+#define INFO_MISC (INFO_FLIST+1)
+#define INFO_MOUNT (INFO_MISC+1)
+#define INFO_NAME (INFO_MOUNT+1)
+#define INFO_NONREG (INFO_NAME+1)
+#define INFO_PROGRESS (INFO_NONREG+1)
+#define INFO_REMOVE (INFO_PROGRESS+1)
+#define INFO_SKIP (INFO_REMOVE+1)
+#define INFO_STATS (INFO_SKIP+1)
+#define INFO_SYMSAFE (INFO_STATS+1)
+
+#define COUNT_INFO (INFO_SYMSAFE+1)
+
+#define DEBUG_ACL 0
+#define DEBUG_BACKUP (DEBUG_ACL+1)
+#define DEBUG_BIND (DEBUG_BACKUP+1)
+#define DEBUG_CHDIR (DEBUG_BIND+1)
+#define DEBUG_CONNECT (DEBUG_CHDIR+1)
+#define DEBUG_CMD (DEBUG_CONNECT+1)
+#define DEBUG_DEL (DEBUG_CMD+1)
+#define DEBUG_DELTASUM (DEBUG_DEL+1)
+#define DEBUG_DUP (DEBUG_DELTASUM+1)
+#define DEBUG_EXIT (DEBUG_DUP+1)
+#define DEBUG_FILTER (DEBUG_EXIT+1)
+#define DEBUG_FLIST (DEBUG_FILTER+1)
+#define DEBUG_FUZZY (DEBUG_FLIST+1)
+#define DEBUG_GENR (DEBUG_FUZZY+1)
+#define DEBUG_HASH (DEBUG_GENR+1)
+#define DEBUG_HLINK (DEBUG_HASH+1)
+#define DEBUG_ICONV (DEBUG_HLINK+1)
+#define DEBUG_IO (DEBUG_ICONV+1)
+#define DEBUG_NSTR (DEBUG_IO+1)
+#define DEBUG_OWN (DEBUG_NSTR+1)
+#define DEBUG_PROTO (DEBUG_OWN+1)
+#define DEBUG_RECV (DEBUG_PROTO+1)
+#define DEBUG_SEND (DEBUG_RECV+1)
+#define DEBUG_TIME (DEBUG_SEND+1)
+
+#define COUNT_DEBUG (DEBUG_TIME+1)
+
+#ifndef HAVE_INET_NTOP
+const char *inet_ntop(int af, const void *src, char *dst, size_t size);
+#endif
+
+#ifndef HAVE_INET_PTON
+int inet_pton(int af, const char *src, void *dst);
+#endif
+
+#ifndef HAVE_GETPASS
+char *getpass(const char *prompt);
+#endif
+
+#ifdef MAINTAINER_MODE
+const char *get_panic_action(void);
+#endif
+
+#define NOISY_DEATH(msg) do { \
+ fprintf(stderr, "%s in %s at line %d\n", msg, __FILE__, __LINE__); \
+ exit_cleanup(RERR_UNSUPPORTED); \
+} while (0)
+
+#ifdef HAVE_MALLINFO2
+#define MEM_ALLOC_INFO mallinfo2
+#elif defined HAVE_MALLINFO
+#define MEM_ALLOC_INFO mallinfo
+#endif