/* * Copyright (C) 1996, 2000 Andrew Tridgell * Copyright (C) 1996 Paul Mackerras * Copyright (C) 2001, 2002 Martin Pool * Copyright (C) 2003-2020 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 (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_RESERVED_17 (1<<17) /* reserved for future crtimes use */ /* 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 */ #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 ATTRS_SET_NANO (1<<2) #define ATTRS_SKIP_ATIME (1<<3) #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 #ifdef HAVE_SYS_TYPES_H # include #endif #ifdef HAVE_SYS_STAT_H # include #endif #ifdef STDC_HEADERS # include # include #else # ifdef HAVE_STDLIB_H # include # endif #endif #ifdef HAVE_STRING_H # if !defined STDC_HEADERS && defined HAVE_MEMORY_H # include # endif # include #endif #ifdef HAVE_STRINGS_H # include #endif #ifdef HAVE_INTTYPES_H # include #endif #ifdef HAVE_STDINT_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_SYS_PARAM_H #include #endif #if defined HAVE_MALLOC_H && (defined HAVE_MALLINFO || !defined HAVE_STDLIB_H) #include #endif #ifdef HAVE_SYS_SOCKET_H #include #endif #ifdef TIME_WITH_SYS_TIME #include #include #else #ifdef HAVE_SYS_TIME_H #include #else #include #endif #endif #ifdef HAVE_FCNTL_H #include #else #ifdef HAVE_SYS_FCNTL_H #include #endif #endif #ifdef HAVE_SYS_IOCTL_H #include #endif #ifdef HAVE_SYS_FILIO_H #include #endif #include #ifdef HAVE_SYS_WAIT_H #include #endif #ifdef HAVE_CTYPE_H #include #endif #ifdef HAVE_GRP_H #include #endif #include #ifdef HAVE_UTIME_H #include #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 #endif #ifdef HAVE_SYS_MODE_H /* apparently AIX needs this for S_ISLNK */ #ifndef S_ISLNK #include #endif #endif /* these are needed for the uid/gid mapping code */ #include #include #include #include #include #ifdef HAVE_NETDB_H #include #endif #include #include #ifdef HAVE_DIRENT_H # include #else # define dirent direct # ifdef HAVE_SYS_NDIR_H # include # endif # ifdef HAVE_SYS_DIR_H # include # endif # ifdef HAVE_NDIR_H # include # endif #endif #ifdef MAJOR_IN_MKDEV #include # if !defined makedev && (defined mkdev || defined _WIN32 || defined __WIN32__) # define makedev mkdev # endif #elif defined MAJOR_IN_SYSMACROS #include #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 #endif #ifdef HAVE_LIMITS_H # include #endif #if defined USE_ICONV_OPEN && defined HAVE_ICONV_H #include #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 #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 #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 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 */ const char basename[1]; /* The basename (AKA filename) follows */ }; extern int file_extra_cnt; extern int inc_recurse; extern int atimes_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; #define FILE_STRUCT_LEN (offsetof(struct file_struct, basename)) #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 ((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)) /* 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 /* 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 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; } 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; 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) #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 struct name_num_item { int num; const char *name, *main_name; }; struct name_num_obj { const char *type; const char *negotiated_name; uchar *saw; int saw_len; int negotiated_num; struct name_num_item list[]; }; #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)) #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):"") /* 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_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