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/* SCCS Id: @(#)vmsfiles.c 3.4 1999/08/29 */
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/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
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/* NetHack may be freely redistributed. See license for details. */
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* VMS-specific file manipulation routines to implement some missing
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* routines or substitute for ones where we want behavior modification.
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/* lint supression due to lack of extern.h */
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int FDECL(vms_link, (const char *,const char *));
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int FDECL(vms_unlink, (const char *));
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int FDECL(vms_creat, (const char *,unsigned int));
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int FDECL(vms_open, (const char *,int,unsigned int));
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boolean FDECL(same_dir, (const char *,const char *));
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int FDECL(c__translate, (int));
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char *FDECL(vms_basename, (const char *));
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#define PSL$C_EXEC 1 /* executive mode, for priv'd logical name handling */
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#ifndef C$$TRANSLATE /* don't rely on VAXCRTL's internal routine */
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#define C$$TRANSLATE(status) (errno = EVMSERR, vaxc$errno = (status))
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extern unsigned long sys$parse(), sys$search(), sys$enter(), sys$remove();
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extern int VDECL(lib$match_cond, (int,int,...));
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#define vms_success(sts) ((sts)&1) /* odd, */
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#define vms_failure(sts) (!vms_success(sts)) /* even */
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/* vms_link() -- create an additional directory for an existing file */
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int vms_link(file, new)
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const char *file, *new;
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unsigned short fid[3];
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char esa[NAM$C_MAXRSS];
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fab = cc$rms_fab; /* set block ID and length, zero the rest */
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fab.fab$l_fop = FAB$M_OFP;
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fab.fab$l_fna = (char *) file;
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fab.fab$b_fns = strlen(file);
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nam.nam$b_ess = sizeof esa;
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if (vms_success(sys$parse(&fab)) && vms_success(sys$search(&fab))) {
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fid[0] = nam.nam$w_fid[0];
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fid[1] = nam.nam$w_fid[1];
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fid[2] = nam.nam$w_fid[2];
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fab.fab$l_fna = (char *) new;
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fab.fab$b_fns = strlen(new);
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if (vms_success(sys$parse(&fab))) {
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nam.nam$w_fid[0] = fid[0];
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nam.nam$w_fid[1] = fid[1];
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nam.nam$w_fid[2] = fid[2];
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nam.nam$l_esa = nam.nam$l_name;
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nam.nam$b_esl = nam.nam$b_name + nam.nam$b_type + nam.nam$b_ver;
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(void) sys$enter(&fab);
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if (vms_failure(fab.fab$l_sts)) {
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C$$TRANSLATE(fab.fab$l_sts);
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return 0; /* success */
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vms_unlink() -- remove a directory entry for a file; should only be used
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for files which have had extra directory entries added, not for deletion
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(because the file won't be deleted, just made inaccessible!).
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char esa[NAM$C_MAXRSS];
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fab = cc$rms_fab; /* set block ID and length, zero the rest */
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fab.fab$l_fop = FAB$M_DLT;
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fab.fab$l_fna = (char *) file;
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fab.fab$b_fns = strlen(file);
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nam.nam$b_ess = sizeof esa;
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if (vms_failure(sys$parse(&fab)) || vms_failure(sys$remove(&fab))) {
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C$$TRANSLATE(fab.fab$l_sts);
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Substitute creat() routine -- if trying to create a specific version,
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explicitly remove an existing file of the same name. Since it's only
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used when we expect exclusive access, add a couple RMS options for
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optimization. (Don't allow sharing--eliminates coordination overhead,
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and use 32 block buffer for faster throughput; ~30% speedup measured.)
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int vms_creat(file, mode)
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if (index(file, ';')) {
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/* assumes remove or delete, not vms_unlink */
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return creat(file, mode, "shr=nil", "mbc=32", "mbf=2", "rop=wbh");
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Similar substitute for open() -- if an open attempt fails due to being
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locked by another user, retry it once (work-around for a limitation of
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at least one NFS implementation).
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int vms_open(file, flags, mode)
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int fd = open(file, flags, mode, "mbc=32", "mbf=2", "rop=rah");
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if (fd < 0 && errno == EVMSERR && lib$match_cond(vaxc$errno, RMS$_FLK)) {
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fd = open(file, flags, mode, "mbc=32", "mbf=2", "rop=rah");
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Determine whether two strings contain the same directory name.
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Used for deciding whether installed privileges should be disabled
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when HACKDIR is defined in the environment (or specified via -d on
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the command line). This version doesn't handle Unix-style file specs.
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if (!d1 || !*d1 || !d2 || !*d2)
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else if (!strcmp(d1, d2)) /* strcmpi() would be better, but that leads */
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return TRUE; /* to linking problems for the utilities */
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f1 = f2 = cc$rms_fab; /* initialize file access block */
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n1 = n2 = cc$rms_nam; /* initialize name block */
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f1.fab$b_acmodes = PSL$C_EXEC << FAB$V_LNM_MODE;
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f1.fab$b_fns = strlen( f1.fab$l_fna = (char *)d1 );
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f2.fab$b_fns = strlen( f2.fab$l_fna = (char *)d2 );
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f1.fab$l_nam = (genericptr_t)&n1; /* link nam to fab */
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f2.fab$l_nam = (genericptr_t)&n2;
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n1.nam$b_nop = n2.nam$b_nop = NAM$M_NOCONCEAL; /* want true device name */
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return (vms_success(sys$parse(&f1)) && vms_success(sys$parse(&f2))
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&& n1.nam$t_dvi[0] == n2.nam$t_dvi[0]
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&& !strncmp(&n1.nam$t_dvi[1], &n2.nam$t_dvi[1], n1.nam$t_dvi[0])
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&& !memcmp((genericptr_t)n1.nam$w_did,
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(genericptr_t)n2.nam$w_did,
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sizeof n1.nam$w_did)); /*{ short nam$w_did[3]; }*/
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* c__translate -- substitute for VAXCRTL routine C$$TRANSLATE.
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* Try to convert a VMS status code into its Unix equivalent,
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* then set `errno' to that value; use EVMSERR if there's no
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* appropriate translation; set `vaxc$errno' to the original
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* status code regardless.
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* These translations match only a subset of VAXCRTL's lookup
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* table, but work even if the severity has been adjusted or
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* the inhibit-message bit has been set.
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/* #include <libdef.h> */
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/* #include <mthdef.h> */
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#define VALUE(U) trans = U; break
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#define CASE1(V) case (V >> 3)
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#define CASE2(V,W) CASE1(V): CASE1(W)
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int c__translate(code)
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switch ((code & 0x0FFFFFF8) >> 3) { /* strip upper 4 and bottom 3 bits */
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CASE2(RMS$_PRV,SS$_NOPRIV):
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VALUE(EPERM); /* not owner */
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CASE2(RMS$_DNF,RMS$_DIR):
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CASE2(RMS$_FNF,RMS$_FND):
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CASE1(SS$_NOSUCHFILE):
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VALUE(ENOENT); /* no such file or directory */
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CASE2(RMS$_IFI,RMS$_ISI):
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VALUE(EIO); /* i/o error */
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CASE2(SS$_NOSUCHDEV,SS$_DEVNOTMOUNT):
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VALUE(ENXIO); /* no such device or address codes */
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/* CASE1(LIB$INSVIRMEM): */
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CASE2(SS$_VASFULL,SS$_INSFWSL):
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VALUE(ENOMEM); /* not enough core */
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VALUE(EFAULT); /* bad address */
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CASE2(RMS$_DNR,SS$_DEVASSIGN):
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CASE2(SS$_DEVALLOC,SS$_DEVALRALLOC):
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CASE2(SS$_DEVMOUNT,SS$_DEVACTIVE):
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VALUE(EBUSY); /* mount device busy codes to name a few */
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CASE2(RMS$_FEX,SS$_FILALRACC):
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VALUE(EEXIST); /* file exists */
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CASE2(RMS$_IDR,SS$_BADIRECTORY):
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VALUE(ENOTDIR); /* not a directory */
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VALUE(EMFILE); /* too many open files */
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CASE2(SS$_DEVICEFULL,SS$_EXDISKQUOTA):
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VALUE(ENOSPC); /* no space left on disk codes */
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CASE2(RMS$_WLK,SS$_WRITLCK):
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VALUE(EROFS); /* read-only file system */
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return code; /* (not very useful) */
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static char base_name[NAM$C_MAXRSS+1];
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/* return a copy of the 'base' portion of a filename */
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register const char *name_p;
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/* skip directory/path */
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if ((name_p = strrchr(name, ']')) != 0) name = name_p + 1;
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if ((name_p = strrchr(name, '>')) != 0) name = name_p + 1;
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if ((name_p = strrchr(name, ':')) != 0) name = name_p + 1;
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if ((name_p = strrchr(name, '/')) != 0) name = name_p + 1;
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if (!*name) name = "."; /* this should never happen */
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/* find extension/version and derive length of basename */
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if ((name_p = strchr(name, '.')) == 0 || name_p == name)
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name_p = strchr(name, ';');
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len = (name_p && name_p > name) ? name_p - name : strlen(name);
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/* return a lowercase copy of the name in a private static buffer */
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base = strncpy(base_name, name, len);
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/* we don't use lcase() so that utilities won't need hacklib.c */
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for (base_p = base; base_p < &base[len]; base_p++)
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if (isupper(*base_p)) *base_p = tolower(*base_p);
added
removed
sys/vms/vmsfiles.c
