/*% cc -g -DUNIX -DDIAGS -MAXTRIES=100 -DRXTIMEOUT=2 % -o irz; size irz; * * irz.c By Chuck Forsberg * Copyright 2005 2011 Omen Technology INC All Rights Reserved * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Omen Technology INC. * The Copyright notice above does not evidence any actual or intended * publication such source code. * * Entry: * int rz(); * returns IZOK or IZERROR * * External functions called: * * sendline(c) sends a character to host * purgeline() empty receive queue * int readline(tenths) read char from host, timeout in seconds/10 return received byte 0 to 0377 negative return values indicate error: return -1 on recoverable error return -2 on timeout trap fatal errors (loss of carrier, etc.), close file * sendbrk() send a break signal (not likely to be needed) * * long crprocheader(s) parse filename, decide what to do with * if (zconv==ZCRESUM) means sender requests crash recovery * incoming file: * return ERROR to skip * opens it for writing * Returns restart address if crash recovery desired, else 0 * * putsec(s, n) write n bytes, trap errors * Writing assumed to begin at the address returned by crprocheader() * closeit(status) finish writing * trap on error * N.B: closeit might be called after the file is closed. * When trapping on errors, close file, call canit() unless line dropped */ int tryz(), rz(), rzfiles(), rzfile(); long crprocheader(); void closeit(int), putsec(), sendbrk(); #ifndef XEDSINIT void zmputs(); #endif #ifndef BOTH #ifndef IZOK #include "izm.h" #endif // COLETTI moved here for compiler int Verbose=0; //#include "icrctab.c" //to keep compiler from complaining I inserted icrctab.c instead of "including" it /* * Crc calculation stuff */ /* crctab calculated by Mark G. Mendel, Network Systems Corporation */ static unsigned short icrctab[256] = { 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0 }; /* * updcrc macro derived from article Copyright (C) 1986 Stephen Satchell. * NOTE: First srgument must be in range 0 to 255. * Second argument is referenced twice. * * Programmers may incorporate any or all code into their programs, * giving proper credit within the source. Publication of the * source routines is permitted so long as proper credit is given * to Stephen Satchell, Satchell Evaluations and Chuck Forsberg, * Omen Technology. */ #define updcrc(cp, crc) ( icrctab[((crc >> 8) & 255)] ^ (crc << 8) ^ cp) /* * Copyright (C) 1986 Gary S. Brown. You may use this program, or * code or tables extracted from it, as desired without restriction. */ /* First, the polynomial itself and its table of feedback terms. The */ /* polynomial is */ /* X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 */ /* Note that we take it "backwards" and put the highest-order term in */ /* the lowest-order bit. The X^32 term is "implied"; the LSB is the */ /* X^31 term, etc. The X^0 term (usually shown as "+1") results in */ /* the MSB being 1. */ /* Note that the usual hardware shift register implementation, which */ /* is what we're using (we're merely optimizing it by doing eight-bit */ /* chunks at a time) shifts bits into the lowest-order term. In our */ /* implementation, that means shifting towards the right. Why do we */ /* do it this way? Because the calculated CRC must be transmitted in */ /* order from highest-order term to lowest-order term. UARTs transmit */ /* characters in order from LSB to MSB. By storing the CRC this way, */ /* we hand it to the UART in the order low-byte to high-byte; the UART */ /* sends each low-bit to hight-bit; and the result is transmission bit */ /* by bit from highest- to lowest-order term without requiring any bit */ /* shuffling on our part. Reception works similarly. */ /* The feedback terms table consists of 256, 32-bit entries. Notes: */ /* */ /* The table can be generated at runtime if desired; code to do so */ /* is shown later. It might not be obvious, but the feedback */ /* terms simply represent the results of eight shift/xor opera- */ /* tions for all combinations of data and CRC register values. */ /* */ /* The values must be right-shifted by eight bits by the "updcrc" */ /* logic; the shift must be unsigned (bring in zeroes). On some */ /* hardware you could probably optimize the shift in assembler by */ /* using byte-swap instructions. */ static unsigned long icr3tab[] = { /* CRC polynomial 0xedb88320 */ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d }; #ifdef NFGM unsigned long UPDC32(b, c) long c; { return (icr3tab[((int)c ^ b) & 0xff] ^ ((c >> 8) & 0x00FFFFFF)); } #else #define UPDC32(b, c) (icr3tab[((int)c ^ b) & 0xff] ^ ((c >> 8) & 0x00FFFFFF)) #endif /* End of icrctab.c */ #ifndef RXTIMEOUT #define RXTIMEOUT 100 #endif int Rxtimeout = RXTIMEOUT; int Zrwindow = 1400; /* RX window size (controls garbage count) */ #endif /* BOTH */ char zconv; /* ZMODEM file conversion request */ #ifdef UNIX #define LOGFILE "/tmp/rzlog" int Verbose=0; #include "rbunix.c" /* most of the system dependent stuff here */ #endif #ifndef XEDSINIT unsigned char Attn[ZATTNLEN+1]; /* Attention string rx sends to tx on err */ #endif int Zctlesc; /* Encode control characters */ int tryzhdrtype=ZRINIT; /* Header type to send corresponding to Last rx close */ #ifndef BOTH #include "izm.c" #ifdef ADDRLE #include "izmr.c" #endif #endif #ifdef UNIX /* called by signal interrupt or terminate to clean things up */ void bibi(n) { canit(); mode(0); fprintf(stderr, "rz: caught signal %d; exiting", n); exit(128+n); } usage() { fprintf(stderr, "Usage: irz (NO arguments)\n"); exit(-1); } main(argc, argv) char *argv[]; { char *p; if (argc != 1) usage(); if ((p = getenv("VERBOSE"))) Verbose = atoi(p); setbuf(stderr, NULL); if (Verbose) { if (freopen(LOGFILE, "w", stderr)==NULL) { printf("Can't open log file %s\n",LOGFILE); exit(0200); } setbuf(stderr, NULL); } mode(1); if (signal(SIGINT, bibi) == SIG_IGN) { signal(SIGINT, SIG_IGN); signal(SIGKILL, SIG_IGN); } else { signal(SIGINT, bibi); signal(SIGKILL, bibi); } signal(SIGTERM, bibi); rz(); mode(0); } #endif /* * Let's receive something already. */ int rz() { register c; #ifdef BOTH Rxtimeout = 100; #endif c=tryz(); if (c) { if (c == ZCOMPL) return IZOK; if (c == IZERROR) goto fubar; c = rzfiles(); if (c) goto fubar; } return IZOK; fubar: canit(); return IZERROR; } /* * Initialize for Zmodem receive attempt, try to activate Zmodem sender * Handles ZSINIT frame * Return ZFILE if Zmodem filename received, -1 on error, * ZCOMPL if transaction finished, else 0 */ tryz() { register c, n; #ifdef LDP unsigned long crc; char *p; #endif for (n=15; --n>=0; ) { /* Set buffer length (0) and capability flags */ stohdr(0L); #ifdef LDP Txhdr[ZF1] = CANLDP; /* Overlays LSB of buffer length!! */ Txhdr[ZF2] = Zfileclosedok ? 1:0; /* last file was received and closed ok */ #endif Txhdr[ZF0] = #ifdef ADDRLE CANRLE | #endif CANFC32|CANFDX|CANOVIO|CANBRK; if (Zctlesc) Txhdr[ZF0] |= TESCCTL; zshhdr(tryzhdrtype, Txhdr); if (tryzhdrtype == ZSKIP) /* Don't skip too far */ tryzhdrtype = ZRINIT; /* CAF 8-21-87 */ again: switch (zgethdr()) { case ZRQINIT: continue; case ZEOF: continue; case TIMEOUT: continue; case ZFILE: #ifdef LDP bytcnt = 0; Zldpactive = Rxhdr[ZF3] & ZSLDP; Zcrcpreset = crc = 0xFFFFFFFFL; #endif zconv = Rxhdr[ZF0]; tryzhdrtype = ZRINIT; c = zrdata(secbuf, 1024); #ifdef UNIX mode(3); #endif if (c == GOTCRCW) { #ifdef LDP if (Zldpactive) { for (p=secbuf, c=Rxcount; --c >=0; ++p) { crc = UPDC32(*p, crc); #ifdef DIAGS vfile("crc=%lX", crc); #endif } for (p = zcpyrldp; *p; ++p) crc = UPDC32(*p, crc); Zcrcpreset = crc; #ifdef DIAGS vfile("Zcrcpreset=%lX", Zcrcpreset); #endif } #endif return ZFILE; } zshhdr(ZNAK, Txhdr); goto again; #ifndef XEDSINIT case ZSINIT: Zctlesc = TESCCTL & Rxhdr[ZF0]; if (zrdata((char *)Attn, ZATTNLEN) == GOTCRCW) { stohdr(1L); zshhdr(ZACK, Txhdr); goto again; } zshhdr(ZNAK, Txhdr); goto again; #endif case ZCOMPL: goto again; default: continue; case ZFIN: zshhdr(ZFIN, Txhdr); readline(Rxtimeout); readline(Rxtimeout); return ZCOMPL; case ZCAN: return IZERROR; } } return 0; } /* * Receive 1 or more files with ZMODEM protocol */ rzfiles() { register c; for (;;) { switch (c = rzfile()) { case ZEOF: case ZSKIP: case ZFERR: switch (tryz()) { case ZCOMPL: return IZOK; default: return IZERROR; case ZFILE: break; } continue; default: return c; case IZERROR: return IZERROR; } } } #ifndef MAXTRIES #define MAXTRIES 10 #endif /* * Receive a file with ZMODEM protocol * Assumes file name frame is in secbuf */ rzfile() { register c, triesleft; #ifdef LDP Zfileclosedok = 0; /* last file was received and closed ok */ #endif bytcnt = crprocheader(secbuf); #ifdef DIAGS vfile("rzfile: crprocheader returned %ld", bytcnt); #endif if (bytcnt == IZERROR) { tryzhdrtype = ZSKIP; #ifdef DIAGS vfile("rzfile: returning ZSKIP"); #endif return (ZSKIP); } #ifdef DIAGS vfile("rzfile: continuing"); #endif triesleft = MAXTRIES; for (;;) { stohdr(bytcnt); zshhdr(ZRPOS, Txhdr); nxthdr: switch (c = zgethdr()) { default: case ZNAK: case TIMEOUT: if ( --triesleft < 0) { #ifdef DIAGS vfile("Error count Exceeded"); vfile("rzfile2: zgethdr returned %d", c); #endif return IZERROR; } continue; case ZFILE: /* ignore duplicate file packet */ zrdata(secbuf, 1024); continue; case ZEOF: if (rclhdr(Rxhdr) != bytcnt) { /* * Ignore eof if it's at wrong place - force * a timeout because the eof might have gone * out before we sent our zrpos. */ goto nxthdr; } closeit(IZOK); #ifdef DIAGS vfile("rzfile3: normal EOF"); #endif #ifdef LDP Zfileclosedok = 1; /* last file was received and closed ok */ #endif return c; case IZERROR: /* Too much garbage in header search error */ if ( --triesleft < 0) { #ifdef DIAGS vfile("Error count Exceeded"); vfile("rzfile4: zgethdr returned %d", c); #endif return IZERROR; } #ifndef XEDSINIT zmputs(Attn); #endif continue; case ZSKIP: closeit(IZERROR); #ifdef DIAGS vfile("rzfile5: Sender SKIPPED file"); #endif return c; case ZDATA: if (rclhdr(Rxhdr) != bytcnt) { if ( --triesleft < 0) { #ifdef DIAGS vfile("Error count Exceeded"); #endif return IZERROR; } /* Put these two statements back 7-29-05 CAF */ #ifndef XEDSINIT zmputs(Attn); #endif continue; } moredata: #ifdef UNIX if (Verbose>1) fprintf(stderr, " %7lX ", bytcnt); #endif switch (c = zrdata(secbuf, 1024)) { case ZCAN: #ifdef DIAGS vfile("rzfile6: zgethdr returned %d", c); #endif return IZERROR; case IZERROR: /* CRC error */ if ( --triesleft < 0) { #ifdef DIAGS vfile("Error count Exceeded"); vfile("rzfile7: zgethdr returned %d", c); #endif return IZERROR; } #ifndef XEDSINIT zmputs(Attn); #endif continue; case TIMEOUT: if ( --triesleft < 0) { #ifdef DIAGS vfile("Error count Exceeded"); vfile("rzfile8: zgethdr returned %d", c); #endif return IZERROR; } continue; case GOTCRCW: triesleft = MAXTRIES; putsec(secbuf, Rxcount); bytcnt += Rxcount; stohdr(bytcnt); zshhdr(ZACK, Txhdr); sendline(XON); goto nxthdr; case GOTCRCQ: triesleft = MAXTRIES; putsec(secbuf, Rxcount); bytcnt += Rxcount; stohdr(bytcnt); zshhdr(ZACK, Txhdr); goto moredata; case GOTCRCG: triesleft = MAXTRIES; putsec(secbuf, Rxcount); bytcnt += Rxcount; goto moredata; case GOTCRCE: triesleft = MAXTRIES; putsec(secbuf, Rxcount); bytcnt += Rxcount; goto nxthdr; } } } } #ifndef XEDSINIT /* * Send a string to the modem, processing for \336 (sleep 1 sec) * and \335 (break signal) */ void zmputs(s) unsigned char *s; { unsigned char c; while (*s) { switch (c = *s++) { case 0336: #ifdef FLUSH flushmo(); #endif while (readline(1) > 0) ; continue; case 0335: #ifdef FLUSH flushmo(); #endif sendbrk(); continue; default: sendline(c); } } #ifdef FLUSH flushmo(); #endif } #endif #ifdef UNIX /* * Process incoming file information header * Attempts crash recovery if sender asks for it * Returns 0 or file length for success, else IZERROR * */ long crprocheader(name) char *name; { register char *p; long mfsize; /* Size of incoming file */ struct stat f; /* set default parameters and overrides */ f.st_size = 0; if (!name || !*name) return IZERROR; strcpy(Pathname, name); p = name + 1 + strlen(name); if (*p) { /* Y/ZMODEM file info present */ sscanf(p, "%ld%lo", &mfsize, &Modtime); if (Verbose) { fprintf(stderr, "Incoming header: %s\n", p); fprintf(stderr, "Incoming: %s %ld\n", name, mfsize); } } if ((zconv==ZCRESUM) && (stat(name, &f)!= -1)) { vfile("Current %s is %ld", name, f.st_size); f.st_size &= ~511; fout = fopen(name, "r+"); if ( !fout) return IZERROR; if (fseek(fout, f.st_size, 0)) { closeit(IZERROR); return IZERROR; } vfile("Crash recovery at %ld", f.st_size); } else fout = fopen(name, "w"); if ( !fout) return IZERROR; return (f.st_size); } #endif /* UNIX */ /* End of irz.c */