1/* 2 * Copyright (C) 1996, 2000 Andrew Tridgell 3 * Copyright (C) 1996 Paul Mackerras 4 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org> 5 * Copyright (C) 2003, 2004, 2005, 2006 Wayne Davison 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. 20 */ 21 22#define False 0 23#define True 1 24 25#define BLOCK_SIZE 700 26#define RSYNC_RSH_ENV "RSYNC_RSH" 27#define RSYNC_RSH_IO_ENV "RSYNC_RSH_IO" 28 29#define RSYNC_NAME "rsync" 30/* RSYNCD_SYSCONF is now set in config.h */ 31#define RSYNCD_USERCONF "rsyncd.conf" 32 33#define DEFAULT_LOCK_FILE "/var/run/rsyncd.lock" 34#define URL_PREFIX "rsync://" 35 36#define SYMLINK_PREFIX "/rsyncd-munged/" 37#define SYMLINK_PREFIX_LEN ((int)sizeof SYMLINK_PREFIX - 1) 38 39#define BACKUP_SUFFIX "~" 40 41/* a non-zero CHAR_OFFSET makes the rolling sum stronger, but is 42 incompatible with older versions :-( */ 43#define CHAR_OFFSET 0 44 45/* These flags are only used during the flist transfer. */ 46 47#define XMIT_TOP_DIR (1<<0) 48#define XMIT_SAME_MODE (1<<1) 49#define XMIT_EXTENDED_FLAGS (1<<2) 50#define XMIT_SAME_RDEV_pre28 XMIT_EXTENDED_FLAGS /* Only in protocols < 28 */ 51#define XMIT_SAME_UID (1<<3) 52#define XMIT_SAME_GID (1<<4) 53#define XMIT_SAME_NAME (1<<5) 54#define XMIT_LONG_NAME (1<<6) 55#define XMIT_SAME_TIME (1<<7) 56#define XMIT_SAME_RDEV_MAJOR (1<<8) 57#define XMIT_HAS_IDEV_DATA (1<<9) 58#define XMIT_SAME_DEV (1<<10) 59#define XMIT_RDEV_MINOR_IS_SMALL (1<<11) 60 61/* These flags are used in the live flist data. */ 62 63#define FLAG_TOP_DIR (1<<0) 64#define FLAG_SENT (1<<1) /* sender */ 65#define FLAG_HLINK_EOL (1<<1) /* receiver/generator */ 66#define FLAG_MOUNT_POINT (1<<2) /* sender/generator */ 67#define FLAG_DEL_HERE (1<<3) /* receiver/generator */ 68#define FLAG_HLINK_TOL (1<<4) /* receiver/generator */ 69#define FLAG_NO_FUZZY (1<<5) /* generator */ 70#define FLAG_MISSING (1<<6) /* generator */ 71#define FLAG_CLEAR_METADATA (1<<7) /* receiver */ 72 73/* update this if you make incompatible changes */ 74#define PROTOCOL_VERSION 29 75 76/* We refuse to interoperate with versions that are not in this range. 77 * Note that we assume we'll work with later versions: the onus is on 78 * people writing them to make sure that they don't send us anything 79 * we won't understand. 80 * 81 * Interoperation with old but supported protocol versions 82 * should cause a warning to be printed. At a future date 83 * the old protocol will become the minimum and 84 * compatibility code removed. 85 * 86 * There are two possible explanations for the limit at 87 * MAX_PROTOCOL_VERSION: either to allow new major-rev versions that 88 * do not interoperate with us, and (more likely) so that we can 89 * detect an attempt to connect rsync to a non-rsync server, which is 90 * unlikely to begin by sending a byte between MIN_PROTOCL_VERSION and 91 * MAX_PROTOCOL_VERSION. */ 92 93#define MIN_PROTOCOL_VERSION 20 94#define OLD_PROTOCOL_VERSION 25 95#define MAX_PROTOCOL_VERSION 40 96 97#define RSYNC_PORT 873 98 99#define SPARSE_WRITE_SIZE (1024) 100#define WRITE_SIZE (32*1024) 101#define CHUNK_SIZE (32*1024) 102#define MAX_MAP_SIZE (256*1024) 103#define IO_BUFFER_SIZE (4092) 104#define MAX_BLOCK_SIZE ((int32)1 << 29) 105 106#define IOERR_GENERAL (1<<0) /* For backward compatibility, this must == 1 */ 107#define IOERR_VANISHED (1<<1) 108#define IOERR_DEL_LIMIT (1<<2) 109 110#define MAX_ARGS 1000 111#define MAX_BASIS_DIRS 20 112#define MAX_SERVER_ARGS (MAX_BASIS_DIRS*2 + 100) 113 114#define MPLEX_BASE 7 115 116#define NO_FILTERS 0 117#define SERVER_FILTERS 1 118#define ALL_FILTERS 2 119 120#define XFLG_FATAL_ERRORS (1<<0) 121#define XFLG_OLD_PREFIXES (1<<1) 122#define XFLG_ANCHORED2ABS (1<<2) 123#define XFLG_ABS_IF_SLASH (1<<3) 124 125#define ATTRS_REPORT (1<<0) 126#define ATTRS_SKIP_MTIME (1<<1) 127 128#define FULL_FLUSH 1 129#define NORMAL_FLUSH 0 130 131#define PDIR_CREATE 1 132#define PDIR_DELETE 0 133 134/* Note: 0x00 - 0x7F are used for basis_dir[] indexes! */ 135#define FNAMECMP_BASIS_DIR_LOW 0x00 /* Must remain 0! */ 136#define FNAMECMP_BASIS_DIR_HIGH 0x7F 137#define FNAMECMP_FNAME 0x80 138#define FNAMECMP_PARTIAL_DIR 0x81 139#define FNAMECMP_BACKUP 0x82 140#define FNAMECMP_FUZZY 0x83 141 142/* For use by the itemize_changes code */ 143#define ITEM_REPORT_ATIME (1<<0) 144#define ITEM_REPORT_CHECKSUM (1<<1) 145#define ITEM_REPORT_SIZE (1<<2) 146#define ITEM_REPORT_TIME (1<<3) 147#define ITEM_REPORT_PERMS (1<<4) 148#define ITEM_REPORT_OWNER (1<<5) 149#define ITEM_REPORT_GROUP (1<<6) 150#define ITEM_REPORT_ACL (1<<7) 151#define ITEM_REPORT_XATTR (1<<8) 152#define ITEM_BASIS_TYPE_FOLLOWS (1<<11) 153#define ITEM_XNAME_FOLLOWS (1<<12) 154#define ITEM_IS_NEW (1<<13) 155#define ITEM_LOCAL_CHANGE (1<<14) 156#define ITEM_TRANSFER (1<<15) 157/* These are outside the range of the transmitted flags. */ 158#define ITEM_MISSING_DATA (1<<16) /* used by log_formatted() */ 159#define ITEM_DELETED (1<<17) /* used by log_formatted() */ 160 161#define SIGNIFICANT_ITEM_FLAGS (~(\ 162 ITEM_BASIS_TYPE_FOLLOWS | ITEM_XNAME_FOLLOWS | ITEM_LOCAL_CHANGE)) 163 164 165/* Log-message categories. Only FERROR and FINFO get sent over the socket, 166 * but FLOG and FSOCKERR can be sent over the receiver -> generator pipe. 167 * FLOG only goes to the log file, not the client; FCLIENT is the opposite. */ 168enum logcode { FNONE=0, FERROR=1, FINFO=2, FLOG=3, FCLIENT=4, FSOCKERR=5 }; 169 170/* Messages types that are sent over the message channel. The logcode 171 * values must all be present here with identical numbers. */ 172enum msgcode { 173 MSG_DATA=0, /* raw data on the multiplexed stream */ 174 MSG_ERROR=FERROR, MSG_INFO=FINFO, /* remote logging */ 175 MSG_LOG=FLOG, MSG_SOCKERR=FSOCKERR, /* sibling logging */ 176 MSG_REDO=9, /* reprocess indicated flist index */ 177 MSG_SUCCESS=100,/* successfully updated indicated flist index */ 178 MSG_DELETED=101,/* successfully deleted a file on receiving side */ 179 MSG_DONE=86 /* current phase is done */ 180}; 181 182#include "errcode.h" 183 184#include "config.h" 185 186/* The default RSYNC_RSH is always set in config.h. */ 187 188#include <stdio.h> 189#ifdef HAVE_SYS_TYPES_H 190# include <sys/types.h> 191#endif 192#ifdef HAVE_SYS_STAT_H 193# include <sys/stat.h> 194#endif 195#ifdef STDC_HEADERS 196# include <stdlib.h> 197# include <stddef.h> 198#else 199# ifdef HAVE_STDLIB_H 200# include <stdlib.h> 201# endif 202#endif 203#ifdef HAVE_STRING_H 204# if !defined STDC_HEADERS && defined HAVE_MEMORY_H 205# include <memory.h> 206# endif 207# include <string.h> 208#endif 209#ifdef HAVE_STRINGS_H 210# include <strings.h> 211#endif 212#ifdef HAVE_UNISTD_H 213# include <unistd.h> 214#endif 215 216#ifdef HAVE_SYS_PARAM_H 217#include <sys/param.h> 218#endif 219 220#if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H) 221#include <malloc.h> 222#endif 223 224#ifdef HAVE_SYS_SOCKET_H 225#include <sys/socket.h> 226#endif 227 228#ifdef TIME_WITH_SYS_TIME 229#include <sys/time.h> 230#include <time.h> 231#else 232#ifdef HAVE_SYS_TIME_H 233#include <sys/time.h> 234#else 235#include <time.h> 236#endif 237#endif 238 239#ifdef HAVE_FCNTL_H 240#include <fcntl.h> 241#else 242#ifdef HAVE_SYS_FCNTL_H 243#include <sys/fcntl.h> 244#endif 245#endif 246 247#ifdef HAVE_SYS_IOCTL_H 248#include <sys/ioctl.h> 249#endif 250 251#ifdef HAVE_SYS_FILIO_H 252#include <sys/filio.h> 253#endif 254 255#include <signal.h> 256#ifdef HAVE_SYS_WAIT_H 257#include <sys/wait.h> 258#endif 259#ifdef HAVE_CTYPE_H 260#include <ctype.h> 261#endif 262#ifdef HAVE_GRP_H 263#include <grp.h> 264#endif 265#include <errno.h> 266 267#ifdef HAVE_UTIME_H 268#include <utime.h> 269#endif 270 271#ifdef HAVE_SYS_SELECT_H 272#include <sys/select.h> 273#endif 274 275#ifdef HAVE_SYS_MODE_H 276/* apparently AIX needs this for S_ISLNK */ 277#ifndef S_ISLNK 278#include <sys/mode.h> 279#endif 280#endif 281 282#ifdef HAVE_GLOB_H 283#include <glob.h> 284#endif 285 286/* these are needed for the uid/gid mapping code */ 287#include <pwd.h> 288#include <grp.h> 289 290#include <stdarg.h> 291#include <netinet/in.h> 292#include <arpa/inet.h> 293#include <netdb.h> 294#include <syslog.h> 295#include <sys/file.h> 296 297#ifdef HAVE_DIRENT_H 298# include <dirent.h> 299#else 300# define dirent direct 301# ifdef HAVE_SYS_NDIR_H 302# include <sys/ndir.h> 303# endif 304# ifdef HAVE_SYS_DIR_H 305# include <sys/dir.h> 306# endif 307# ifdef HAVE_NDIR_H 308# include <ndir.h> 309# endif 310#endif 311 312#ifdef MAJOR_IN_MKDEV 313#include <sys/mkdev.h> 314# if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__) 315# define makedev mkdev 316# endif 317#elif defined MAJOR_IN_SYSMACROS 318#include <sys/sysmacros.h> 319#endif 320 321#ifdef MAKEDEV_TAKES_3_ARGS 322#define MAKEDEV(devmajor,devminor) makedev(0,devmajor,devminor) 323#else 324#define MAKEDEV(devmajor,devminor) makedev(devmajor,devminor) 325#endif 326 327#ifdef HAVE_COMPAT_H 328#include <compat.h> 329#endif 330 331#ifdef HAVE_LIMITS_H 332# include <limits.h> 333#endif 334 335#include <assert.h> 336 337#include "lib/pool_alloc.h" 338 339#define BOOL int 340 341#ifndef uchar 342#define uchar unsigned char 343#endif 344 345#ifdef SIGNED_CHAR_OK 346#define schar signed char 347#else 348#define schar char 349#endif 350 351/* Find a variable that is either exactly 32-bits or longer. 352 * If some code depends on 32-bit truncation, it will need to 353 * take special action in a "#if SIZEOF_INT32 > 4" section. */ 354#ifndef int32 355#if SIZEOF_INT == 4 356# define int32 int 357# define SIZEOF_INT32 4 358#elif SIZEOF_LONG == 4 359# define int32 long 360# define SIZEOF_INT32 4 361#elif SIZEOF_SHORT == 4 362# define int32 short 363# define SIZEOF_INT32 4 364#elif SIZEOF_INT > 4 365# define int32 int 366# define SIZEOF_INT32 SIZEOF_INT 367#elif SIZEOF_LONG > 4 368# define int32 long 369# define SIZEOF_INT32 SIZEOF_LONG 370#else 371# error Could not find a 32-bit integer variable 372#endif 373#else 374# define SIZEOF_INT32 4 375#endif 376 377#ifndef uint32 378#define uint32 unsigned int32 379#endif 380 381#if SIZEOF_OFF_T == 8 || !SIZEOF_OFF64_T || !defined HAVE_STRUCT_STAT64 382#define OFF_T off_t 383#define STRUCT_STAT struct stat 384#else 385#define OFF_T off64_t 386#define STRUCT_STAT struct stat64 387#define USE_STAT64_FUNCS 1 388#endif 389 390/* CAVEAT: on some systems, int64 will really be a 32-bit integer IFF 391 * that's the maximum size the file system can handle and there is no 392 * 64-bit type available. The rsync source must therefore take steps 393 * to ensure that any code that really requires a 64-bit integer has 394 * it (e.g. the checksum code uses two 32-bit integers for its 64-bit 395 * counter). */ 396#if SIZEOF_LONG == 8 397# define int64 long 398# define SIZEOF_INT64 8 399#elif SIZEOF_INT == 8 400# define int64 int 401# define SIZEOF_INT64 8 402#elif SIZEOF_LONG_LONG == 8 403# define int64 long long 404# define SIZEOF_INT64 8 405#elif SIZEOF_OFF64_T == 8 406# define int64 off64_t 407# define SIZEOF_INT64 8 408#elif SIZEOF_OFF_T == 8 409# define int64 off_t 410# define SIZEOF_INT64 8 411#elif SIZEOF_INT > 8 412# define int64 int 413# define SIZEOF_INT64 SIZEOF_INT 414#elif SIZEOF_LONG > 8 415# define int64 long 416# define SIZEOF_INT64 SIZEOF_LONG 417#elif SIZEOF_LONG_LONG > 8 418# define int64 long long 419# define SIZEOF_INT64 SIZEOF_LONG_LONG 420#else 421/* As long as it gets... */ 422# define int64 off_t 423# define SIZEOF_INT64 SIZEOF_OFF_T 424#endif 425 426/* Starting from protocol version 26, we always use 64-bit 427 * ino_t and dev_t internally, even if this platform does not 428 * allow files to have 64-bit inums. That's because the 429 * receiver needs to find duplicate (dev,ino) tuples to detect 430 * hardlinks, and it might have files coming from a platform 431 * that has 64-bit inums. 432 * 433 * The only exception is if we're on a platform with no 64-bit type at 434 * all. 435 * 436 * Because we use read_longint() to get these off the wire, if you 437 * transfer devices or hardlinks with dev or inum > 2**32 to a machine 438 * with no 64-bit types then you will get an overflow error. Probably 439 * not many people have that combination of machines, and you can 440 * avoid it by not preserving hardlinks or not transferring device 441 * nodes. It's not clear that any other behaviour is better. 442 * 443 * Note that if you transfer devices from a 64-bit-devt machine (say, 444 * Solaris) to a 32-bit-devt machine (say, Linux-2.2/x86) then the 445 * device numbers will be truncated. But it's a kind of silly thing 446 * to do anyhow. 447 * 448 * FIXME: I don't think the code in flist.c has ever worked on a system 449 * where dev_t is a struct. 450 */ 451 452struct idev { 453 int64 inode; 454 int64 dev; 455}; 456 457#ifndef MIN 458#define MIN(a,b) ((a)<(b)?(a):(b)) 459#endif 460 461#ifndef MAX 462#define MAX(a,b) ((a)>(b)?(a):(b)) 463#endif 464 465#ifndef MAXHOSTNAMELEN 466#define MAXHOSTNAMELEN 256 467#endif 468 469/* the length of the md4 checksum */ 470#define MD4_SUM_LENGTH 16 471#define SUM_LENGTH 16 472#define SHORT_SUM_LENGTH 2 473#define BLOCKSUM_BIAS 10 474 475#ifndef MAXPATHLEN 476#define MAXPATHLEN 1024 477#endif 478 479/* We want a roomy line buffer that can hold more than MAXPATHLEN, 480 * and significantly more than an overly short MAXPATHLEN. */ 481#if MAXPATHLEN < 4096 482#define BIGPATHBUFLEN (4096+1024) 483#else 484#define BIGPATHBUFLEN (MAXPATHLEN+1024) 485#endif 486 487#ifndef NAME_MAX 488#define NAME_MAX 255 489#endif 490 491#ifndef INADDR_NONE 492#define INADDR_NONE 0xffffffff 493#endif 494 495#ifndef IN_LOOPBACKNET 496#define IN_LOOPBACKNET 127 497#endif 498 499#define GID_NONE ((gid_t)-1) 500 501#define HL_CHECK_MASTER 0 502#define HL_SKIP 1 503 504struct hlink { 505 int32 next; 506 int32 hlindex; 507 unsigned short link_dest_used; 508}; 509 510#define F_DEV link_u.idev->dev 511#define F_INODE link_u.idev->inode 512 513#define F_HLINDEX link_u.links->hlindex 514#define F_NEXT link_u.links->next 515 516struct file_struct { 517 union { 518 dev_t rdev; /* The device number, if this is a device */ 519 char *sum; /* Only a normal file can have a checksum */ 520 char *link; /* Points to symlink string, if a symlink */ 521 } u; 522 OFF_T length; 523 char *basename; /* The current item's name (AKA filename) */ 524 char *dirname; /* The directory info inside the transfer */ 525 union { 526 char *root; /* Sender-side dir info outside transfer */ 527 int depth; /* Receiver-side directory depth info */ 528 } dir; 529 union { 530 struct idev *idev; 531 struct hlink *links; 532 } link_u; 533 time_t modtime; 534 uid_t uid; 535 gid_t gid; 536 mode_t mode; 537 uchar flags; /* this item MUST remain last */ 538}; 539 540/* 541 * Start the flist array at FLIST_START entries and grow it 542 * by doubling until FLIST_LINEAR then grow by FLIST_LINEAR 543 */ 544#define FLIST_START (32 * 1024) 545#define FLIST_LINEAR (FLIST_START * 512) 546 547/* 548 * Extent size for allocation pools A minimum size of 128KB 549 * is needed to mmap them so that freeing will release the 550 * space to the OS. 551 * 552 * Larger sizes reduce leftover fragments and speed free calls 553 * (when they happen) Smaller sizes increase the chance of 554 * freed allocations freeing whole extents. 555 */ 556#define FILE_EXTENT (256 * 1024) 557#define HLINK_EXTENT (128 * 1024) 558 559#define WITH_HLINK 1 560#define WITHOUT_HLINK 0 561 562struct file_list { 563 struct file_struct **files; 564 alloc_pool_t file_pool; 565 alloc_pool_t hlink_pool; 566 int count; 567 int malloced; 568 int low, high; 569}; 570 571#define SUMFLG_SAME_OFFSET (1<<0) 572 573struct sum_buf { 574 OFF_T offset; /**< offset in file of this chunk */ 575 int32 len; /**< length of chunk of file */ 576 uint32 sum1; /**< simple checksum */ 577 int32 chain; /**< next hash-table collision */ 578 short flags; /**< flag bits */ 579 char sum2[SUM_LENGTH]; /**< checksum */ 580}; 581 582struct sum_struct { 583 OFF_T flength; /**< total file length */ 584 struct sum_buf *sums; /**< points to info for each chunk */ 585 int32 count; /**< how many chunks */ 586 int32 blength; /**< block_length */ 587 int32 remainder; /**< flength % block_length */ 588 int s2length; /**< sum2_length */ 589}; 590 591struct map_struct { 592 OFF_T file_size; /* File size (from stat) */ 593 OFF_T p_offset; /* Window start */ 594 OFF_T p_fd_offset; /* offset of cursor in fd ala lseek */ 595 char *p; /* Window pointer */ 596 int32 p_size; /* Largest window size we allocated */ 597 int32 p_len; /* Latest (rounded) window size */ 598 int32 def_window_size; /* Default window size */ 599 int fd; /* File Descriptor */ 600 int status; /* first errno from read errors */ 601}; 602 603#define MATCHFLG_WILD (1<<0) /* pattern has '*', '[', and/or '?' */ 604#define MATCHFLG_WILD2 (1<<1) /* pattern has '**' */ 605#define MATCHFLG_WILD2_PREFIX (1<<2) /* pattern starts with "**" */ 606#define MATCHFLG_WILD3_SUFFIX (1<<3) /* pattern ends with "***" */ 607#define MATCHFLG_ABS_PATH (1<<4) /* path-match on absolute path */ 608#define MATCHFLG_INCLUDE (1<<5) /* this is an include, not an exclude */ 609#define MATCHFLG_DIRECTORY (1<<6) /* this matches only directories */ 610#define MATCHFLG_WORD_SPLIT (1<<7) /* split rules on whitespace */ 611#define MATCHFLG_NO_INHERIT (1<<8) /* don't inherit these rules */ 612#define MATCHFLG_NO_PREFIXES (1<<9) /* parse no prefixes from patterns */ 613#define MATCHFLG_MERGE_FILE (1<<10)/* specifies a file to merge */ 614#define MATCHFLG_PERDIR_MERGE (1<<11)/* merge-file is searched per-dir */ 615#define MATCHFLG_EXCLUDE_SELF (1<<12)/* merge-file name should be excluded */ 616#define MATCHFLG_FINISH_SETUP (1<<13)/* per-dir merge file needs setup */ 617#define MATCHFLG_NEGATE (1<<14)/* rule matches when pattern does not */ 618#define MATCHFLG_CVS_IGNORE (1<<15)/* rule was -C or :C */ 619#define MATCHFLG_SENDER_SIDE (1<<16)/* rule applies to the sending side */ 620#define MATCHFLG_RECEIVER_SIDE (1<<17)/* rule applies to the receiving side */ 621#define MATCHFLG_CLEAR_LIST (1<<18)/* this item is the "!" token */ 622 623#define MATCHFLGS_FROM_CONTAINER (MATCHFLG_ABS_PATH | MATCHFLG_INCLUDE \ 624 | MATCHFLG_DIRECTORY | MATCHFLG_SENDER_SIDE \ 625 | MATCHFLG_NEGATE | MATCHFLG_RECEIVER_SIDE) 626 627struct filter_struct { 628 struct filter_struct *next; 629 char *pattern; 630 uint32 match_flags; 631 union { 632 int slash_cnt; 633 struct filter_list_struct *mergelist; 634 } u; 635}; 636 637struct filter_list_struct { 638 struct filter_struct *head; 639 struct filter_struct *tail; 640 char *debug_type; 641}; 642 643struct stats { 644 int64 total_size; 645 int64 total_transferred_size; 646 int64 total_written; 647 int64 total_read; 648 int64 literal_data; 649 int64 matched_data; 650 int64 flist_buildtime; 651 int64 flist_xfertime; 652 int flist_size; 653 int num_files; 654 int num_transferred_files; 655 int current_file_index; 656}; 657 658struct chmod_mode_struct; 659 660#include "byteorder.h" 661#include "lib/mdfour.h" 662#include "lib/wildmatch.h" 663#include "lib/permstring.h" 664#include "lib/addrinfo.h" 665 666#if !defined __GNUC__ 667#define __attribute__(x) 668#endif 669 670#define UNUSED(x) x __attribute__((__unused__)) 671#define NORETURN __attribute__((__noreturn__)) 672 673#include "proto.h" 674 675/* We have replacement versions of these if they're missing. */ 676#ifndef HAVE_ASPRINTF 677int asprintf(char **ptr, const char *format, ...); 678#endif 679 680#ifndef HAVE_VASPRINTF 681int vasprintf(char **ptr, const char *format, va_list ap); 682#endif 683 684#if !defined HAVE_VSNPRINTF || !defined HAVE_C99_VSNPRINTF 685#define vsnprintf rsync_vsnprintf 686int vsnprintf(char *str, size_t count, const char *fmt, va_list args); 687#endif 688 689#if !defined HAVE_SNPRINTF || !defined HAVE_C99_VSNPRINTF 690#define snprintf rsync_snprintf 691int snprintf(char *str,size_t count,const char *fmt,...); 692#endif 693 694 695#ifndef HAVE_STRERROR 696extern char *sys_errlist[]; 697#define strerror(i) sys_errlist[i] 698#endif 699 700#ifndef HAVE_STRCHR 701# define strchr index 702# define strrchr rindex 703#endif 704 705#ifndef HAVE_ERRNO_DECL 706extern int errno; 707#endif 708 709#ifdef HAVE_READLINK 710#define SUPPORT_LINKS 1 711#endif 712#ifdef HAVE_LINK 713#define SUPPORT_HARD_LINKS 1 714#endif 715 716#ifdef HAVE_SIGACTION 717#define SIGACTION(n,h) sigact.sa_handler=(h), sigaction((n),&sigact,NULL) 718#define signal(n,h) we_need_to_call_SIGACTION_not_signal(n,h) 719#else 720#define SIGACTION(n,h) signal(n,h) 721#endif 722 723#ifndef EWOULDBLOCK 724#define EWOULDBLOCK EAGAIN 725#endif 726 727#ifndef STDIN_FILENO 728#define STDIN_FILENO 0 729#endif 730 731#ifndef STDOUT_FILENO 732#define STDOUT_FILENO 1 733#endif 734 735#ifndef STDERR_FILENO 736#define STDERR_FILENO 2 737#endif 738 739#ifndef S_IRUSR 740#define S_IRUSR 0400 741#endif 742 743#ifndef S_IWUSR 744#define S_IWUSR 0200 745#endif 746 747#ifndef ACCESSPERMS 748#define ACCESSPERMS 0777 749#endif 750 751#ifndef S_ISVTX 752#define S_ISVTX 0 753#endif 754 755#define CHMOD_BITS (S_ISUID | S_ISGID | S_ISVTX | ACCESSPERMS) 756 757#ifndef _S_IFMT 758#define _S_IFMT 0170000 759#endif 760 761#ifndef _S_IFLNK 762#define _S_IFLNK 0120000 763#endif 764 765#ifndef S_ISLNK 766#define S_ISLNK(mode) (((mode) & (_S_IFMT)) == (_S_IFLNK)) 767#endif 768 769#ifndef S_ISBLK 770#define S_ISBLK(mode) (((mode) & (_S_IFMT)) == (_S_IFBLK)) 771#endif 772 773#ifndef S_ISCHR 774#define S_ISCHR(mode) (((mode) & (_S_IFMT)) == (_S_IFCHR)) 775#endif 776 777#ifndef S_ISSOCK 778#ifdef _S_IFSOCK 779#define S_ISSOCK(mode) (((mode) & (_S_IFMT)) == (_S_IFSOCK)) 780#else 781#define S_ISSOCK(mode) (0) 782#endif 783#endif 784 785#ifndef S_ISFIFO 786#ifdef _S_IFIFO 787#define S_ISFIFO(mode) (((mode) & (_S_IFMT)) == (_S_IFIFO)) 788#else 789#define S_ISFIFO(mode) (0) 790#endif 791#endif 792 793#ifndef S_ISDIR 794#define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR)) 795#endif 796 797#ifndef S_ISREG 798#define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG)) 799#endif 800 801/* work out what fcntl flag to use for non-blocking */ 802#ifdef O_NONBLOCK 803# define NONBLOCK_FLAG O_NONBLOCK 804#elif defined SYSV 805# define NONBLOCK_FLAG O_NDELAY 806#else 807# define NONBLOCK_FLAG FNDELAY 808#endif 809 810#ifndef INADDR_LOOPBACK 811#define INADDR_LOOPBACK 0x7f000001 812#endif 813 814#ifndef INADDR_NONE 815#define INADDR_NONE 0xffffffff 816#endif 817 818#define IS_SPECIAL(mode) (S_ISSOCK(mode) || S_ISFIFO(mode)) 819#define IS_DEVICE(mode) (S_ISCHR(mode) || S_ISBLK(mode)) 820 821/* Initial mask on permissions given to temporary files. Mask off setuid 822 bits and group access because of potential race-condition security 823 holes, and mask other access because mode 707 is bizarre */ 824#define INITACCESSPERMS 0700 825 826/* handler for null strings in printf format */ 827#define NS(s) ((s)?(s):"<NULL>") 828 829/* Convenient wrappers for malloc and realloc. Use them. */ 830#define new(type) ((type *)malloc(sizeof(type))) 831#define new_array(type, num) ((type *)_new_array(sizeof(type), (num))) 832#define realloc_array(ptr, type, num) ((type *)_realloc_array((ptr), sizeof(type), (num))) 833 834/* use magic gcc attributes to catch format errors */ 835 void rprintf(enum logcode , const char *, ...) 836 __attribute__((format (printf, 2, 3))) 837; 838 839/* This is just like rprintf, but it also tries to print some 840 * representation of the error code. Normally errcode = errno. */ 841void rsyserr(enum logcode, int, const char *, ...) 842 __attribute__((format (printf, 3, 4))) 843 ; 844 845/* Make sure that the O_BINARY flag is defined. */ 846#ifndef O_BINARY 847#define O_BINARY 0 848#endif 849 850#ifndef HAVE_STRLCPY 851size_t strlcpy(char *d, const char *s, size_t bufsize); 852#endif 853 854#ifndef HAVE_STRLCAT 855size_t strlcat(char *d, const char *s, size_t bufsize); 856#endif 857 858#ifndef WEXITSTATUS 859#define WEXITSTATUS(stat) ((int)(((stat)>>8)&0xFF)) 860#endif 861#ifndef WIFEXITED 862#define WIFEXITED(stat) ((int)((stat)&0xFF) == 0) 863#endif 864 865#define exit_cleanup(code) _exit_cleanup(code, __FILE__, __LINE__) 866 867#ifdef HAVE_GETEUID 868#define MY_UID() geteuid() 869#else 870#define MY_UID() getuid() 871#endif 872 873#ifdef HAVE_GETEGID 874#define MY_GID() getegid() 875#else 876#define MY_GID() getgid() 877#endif 878 879extern int verbose; 880 881#ifndef HAVE_INET_NTOP 882const char *inet_ntop(int af, const void *src, char *dst, size_t size); 883#endif 884 885#ifndef HAVE_INET_PTON 886int inet_pton(int af, const char *src, void *dst); 887#endif 888 889#ifdef MAINTAINER_MODE 890const char *get_panic_action(void); 891#endif 892