12498Sdlw /* 2*11907Sdlw char id_open[] = "@(#)open.c 1.5"; 32498Sdlw * 42498Sdlw * open.c - f77 file open routines 52498Sdlw */ 62498Sdlw 72498Sdlw #include <sys/types.h> 82498Sdlw #include <sys/stat.h> 92498Sdlw #include <errno.h> 102498Sdlw #include "fio.h" 112498Sdlw 122498Sdlw #define SCRATCH (st=='s') 132498Sdlw #define NEW (st=='n') 142498Sdlw #define OLD (st=='o') 152498Sdlw #define OPEN (b->ufd) 162498Sdlw #define FROM_OPEN "\1" /* for use in f_clos() */ 172498Sdlw 18*11907Sdlw short opnbof_; /* open at beginning of file */ 192498Sdlw extern char *tmplate; 202498Sdlw extern char *fortfile; 212498Sdlw 222498Sdlw f_open(a) olist *a; 232498Sdlw { unit *b; 242498Sdlw int n,exists; 252498Sdlw char buf[256],st; 262498Sdlw cllist x; 272498Sdlw 282498Sdlw lfname = NULL; 292498Sdlw elist = NO; 302498Sdlw external = YES; /* for err */ 312498Sdlw errflag = a->oerr; 322498Sdlw lunit = a->ounit; 332597Sdlw if(not_legal(lunit)) err(errflag,F_ERUNIT,"open") 342498Sdlw b= &units[lunit]; 352498Sdlw if(a->osta) st = lcase(*a->osta); 362498Sdlw else st = 'u'; 372498Sdlw if(SCRATCH) 382498Sdlw { strcpy(buf,tmplate); 392498Sdlw mktemp(buf); 402498Sdlw } 412498Sdlw else if(a->ofnm) g_char(a->ofnm,a->ofnmlen,buf); 422498Sdlw else sprintf(buf,fortfile,lunit); 432498Sdlw lfname = &buf[0]; 442498Sdlw if(OPEN) 452498Sdlw { 462498Sdlw if(!a->ofnm || inode(buf)==b->uinode) 472498Sdlw { 482498Sdlw if(a->oblnk) b->ublnk= (lcase(*a->oblnk)== 'z'); 492498Sdlw #ifndef KOSHER 502498Sdlw if(a->ofm && b->ufmt) b->uprnt = (lcase(*a->ofm)== 'p'); 512498Sdlw #endif 522498Sdlw return(OK); 532498Sdlw } 542498Sdlw x.cunit=lunit; 552498Sdlw x.csta=FROM_OPEN; 562498Sdlw x.cerr=errflag; 572498Sdlw if(n=f_clos(&x)) return(n); 582498Sdlw } 592498Sdlw exists = (access(buf,0)==NULL); 602597Sdlw if(!exists && OLD) err(errflag,F_EROLDF,"open"); 612597Sdlw if( exists && NEW) err(errflag,F_ERNEWF,"open"); 622498Sdlw if(isdev(buf)) 632498Sdlw { if((b->ufd = fopen(buf,"r")) != NULL) b->uwrt = NO; 642498Sdlw else err(errflag,errno,buf) 652498Sdlw } 662498Sdlw else 67*11907Sdlw { if(!opnbof_ && (b->ufd = fopen(buf, "a")) != NULL) 68*11907Sdlw b->uwrt = YES; 692498Sdlw else if((b->ufd = fopen(buf, "r")) != NULL) 70*11907Sdlw { if (!opnbof_) 71*11907Sdlw fseek(b->ufd, 0L, 2); 722498Sdlw b->uwrt = NO; 732498Sdlw } 742498Sdlw else err(errflag, errno, buf) 752498Sdlw } 762597Sdlw if((b->uinode=finode(b->ufd))==-1) err(errflag,F_ERSTAT,"open") 772498Sdlw b->ufnm = (char *) calloc(strlen(buf)+1,sizeof(char)); 782597Sdlw if(b->ufnm==NULL) err(errflag,F_ERSPACE,"open") 792498Sdlw strcpy(b->ufnm,buf); 802498Sdlw b->uscrtch = SCRATCH; 812498Sdlw b->uend = NO; 822498Sdlw b->useek = canseek(b->ufd); 838943Sdlw if (a->oacc == NULL) 848943Sdlw a->oacc = "seq"; 858943Sdlw if (lcase(*a->oacc)=='s' && a->orl > 0) 868943Sdlw { 876604Sdlw fputs("Warning: open: record length ignored on sequential access\n", units[0].ufd); 888943Sdlw b->url = 0; 898943Sdlw } 908943Sdlw else if (a->orl < 0 || (lcase(*a->oacc)=='d' && a->orl == 0)) 916604Sdlw err(errflag,F_ERARG,"recl on open") 926604Sdlw else 936604Sdlw b->url = a->orl; 942498Sdlw b->ublnk = (a->oblnk && (lcase(*a->oblnk)=='z')); 952498Sdlw if (a->ofm) 962498Sdlw { 972498Sdlw switch(lcase(*a->ofm)) 982498Sdlw { 992498Sdlw case 'f': 1002498Sdlw b->ufmt = YES; 1012498Sdlw b->uprnt = NO; 1022498Sdlw break; 1032498Sdlw #ifndef KOSHER 1042498Sdlw case 'p': /* print file *** NOT STANDARD FORTRAN ***/ 1052498Sdlw b->ufmt = YES; 1062498Sdlw b->uprnt = YES; 1072498Sdlw break; 1082498Sdlw #endif 1092498Sdlw case 'u': 1102498Sdlw b->ufmt = NO; 1112498Sdlw b->uprnt = NO; 1122498Sdlw break; 1132498Sdlw default: 1142597Sdlw err(errflag,F_ERARG,"open form=") 1152498Sdlw } 1162498Sdlw } 1172498Sdlw else /* not specified */ 1182498Sdlw { b->ufmt = (b->url==0); 1192498Sdlw b->uprnt = NO; 1202498Sdlw } 1212498Sdlw if(b->url && b->useek) rewind(b->ufd); 1222498Sdlw return(OK); 1232498Sdlw } 1242498Sdlw 1252498Sdlw fk_open(rd,seq,fmt,n) ftnint n; 1262498Sdlw { char nbuf[10]; 1272498Sdlw olist a; 1282498Sdlw sprintf(nbuf, fortfile, (int)n); 1292498Sdlw a.oerr=errflag; 1302498Sdlw a.ounit=n; 1312498Sdlw a.ofnm=nbuf; 1322498Sdlw a.ofnmlen=strlen(nbuf); 1332498Sdlw a.osta=NULL; 1342498Sdlw a.oacc= seq==SEQ?"s":"d"; 1352498Sdlw a.ofm = fmt==FMT?"f":"u"; 1362498Sdlw a.orl = seq==DIR?1:0; 1372498Sdlw a.oblnk=NULL; 1382498Sdlw return(f_open(&a)); 1392498Sdlw } 1402498Sdlw 1412498Sdlw isdev(s) char *s; 1422498Sdlw { struct stat x; 1432498Sdlw int j; 1442498Sdlw if(stat(s, &x) == -1) return(NO); 1452498Sdlw if((j = (x.st_mode&S_IFMT)) == S_IFREG || j == S_IFDIR) return(NO); 1462498Sdlw else return(YES); 1472498Sdlw } 1482498Sdlw 149