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simplesshd/rsync/rsync.h
Greg Alexander d8cc8daef9 rsync 3.1.1 source, after i trimmed away the parts we obviously won't 
need...but most of it remains.
2014-12-21 17:56:03 -05:00

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/*
* Copyright (C) 1996, 2000 Andrew Tridgell
* Copyright (C) 1996 Paul Mackerras
* Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
* Copyright (C) 2003-2014 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 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 */
#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 */
/* 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 */
/* These flags are for get_dirlist(). */
#define GDL_IGNORE_FILTER_RULES (1<<0)
/* 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 */
#define PROTOCOL_VERSION 31
/* This is used when working on a new protocol version in CVS, and should
* be a new non-zero value for each CVS change that affects the protocol.
* It must ALWAYS be 0 when the protocol goes final (and NEVER before)! */
#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 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 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_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 */
};
#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_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 TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif
#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
#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
#ifdef HAVE_UTIMENSAT
#ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
#define ST_MTIME_NSEC st_mtim.tv_nsec
#elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
#define ST_MTIME_NSEC st_mtimensec
#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>
#include <sys/file.h>
#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
#define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor)
#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
/* 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
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 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
union file_extras {
int32 num;
uint32 unum;
};
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 */
const char basename[1]; /* The basename (AKA filename) follows */
};
extern int file_extra_cnt;
extern int inc_recurse;
extern int uid_ndx;
extern int gid_ndx;
extern int acls_ndx;
extern int xattrs_ndx;
#define FILE_STRUCT_LEN (offsetof(struct file_struct, basename))
#define EXTRA_LEN (sizeof (union file_extras))
#define PTR_EXTRA_CNT ((sizeof (char *) + EXTRA_LEN - 1) / EXTRA_LEN)
#define DEV_EXTRA_CNT 2
#define DIRNODE_EXTRA_CNT 3
#define SUM_EXTRA_CNT ((MAX_DIGEST_LEN + EXTRA_LEN - 1) / EXTRA_LEN)
#define REQ_EXTRA(f,ndx) ((union file_extras*)(f) - (ndx))
#define OPT_EXTRA(f,bump) ((union file_extras*)(f) - file_extra_cnt - 1 - (bump))
#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_LENGTH(f) ((int64)(f)->len32 + ((f)->flags & FLAG_LENGTH64 \
? (int64)OPT_EXTRA(f, NSEC_BUMP(f))->unum << 32 : 0))
#endif
#define F_MOD_NSEC(f) ((f)->flags & FLAG_MOD_NSEC ? OPT_EXTRA(f, 0)->unum : 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: */
#define F_PATHNAME(f) (*(const char**)REQ_EXTRA(f, PTR_EXTRA_CNT))
/* The receiving side always has this available: */
#define F_DEPTH(f) REQ_EXTRA(f, 1)->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
/* 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 * 1024)
#define FLIST_LINEAR (FLIST_START * 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 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 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;
} filter_rule;
typedef struct filter_list_struct {
filter_rule *head;
filter_rule *tail;
filter_rule *parent_dirscan_head;
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;
char fname[1]; /* has variable size */
} relnamecache;
#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;
#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)
#include "proto.h"
#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))
#define PRESERVE_FILE_TIMES (1<<0)
#define PRESERVE_DIR_TIMES (1<<1)
#define PRESERVE_LINK_TIMES (1<<2)
/* 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>")
/* Convenient wrappers for malloc and realloc. Use them. */
#define new(type) ((type*)malloc(sizeof (type)))
#define new0(type) ((type*)calloc(1, sizeof (type)))
#define new_array(type, num) ((type*)_new_array((num), sizeof (type), 0))
#define new_array0(type, num) ((type*)_new_array((num), sizeof (type), 1))
#define realloc_array(ptr, type, num) ((type*)_realloc_array((ptr), sizeof(type), (num)))
/* 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_PROGRESS (INFO_NAME+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_OWN (DEBUG_IO+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
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