/*-*-mode:c-*-*/

/* DEC-94 George Carrette. Additional lisp util subrs,
   many of them depending on operating system calls.
   Note that I have avoided more than one nesting of conditional compilation,
   and the use of the else clause, in hopes of preserving some readability.
   For better or worse I avoided gnu autoconfigure because it was complex required
   scripts nearly as big as this source file. Meanwhile there is some ANSI POSIX
   convergence going on.
 */

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <setjmp.h>
#include <signal.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
#include <errno.h>
#include <stdarg.h>

#if defined(unix)
#include <unistd.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <pwd.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <grp.h>
#include <utime.h>
#include <sys/fcntl.h>
#endif

#if defined(__osf__) || defined(sun)
#include <sys/mode.h>
#endif

#if defined(__osf__) || defined(SUN5)
#include <fnmatch.h>
#endif

#if defined(__osf__)
#include <rld_interface.h>
#endif

#if defined(hpux)
#include <dl.h>
#endif

#if defined(__osf__) || defined(sun) || defined(linux) || defined(sgi)
#include <dlfcn.h>
#endif

#if defined(sun)
#include <limits.h>
#include <sys/mkdev.h>
#include <fcntl.h>
#endif

#if defined(sgi)
#include <limits.h>
#endif

#ifndef PATH_MAX
#define PATH_MAX 1024
#endif

#if defined(hpux)
#define PATH_MAX MAXPATHLEN
#endif

#if defined(VMS)
#include <unixlib.h>
#include <stat.h>
#include <ssdef.h>
#include <descrip.h>
#include <lib$routines.h>
#include <descrip.h>
#include <ssdef.h>
#include <iodef.h>
#include <lnmdef.h>
#endif

#ifdef WIN32
#include <windows.h>
#include <io.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <process.h>
#include <direct.h>
#endif

#include "siod.h"
#include "siodp.h"

static void init_slibu_version(void)
{setvar(cintern("*slibu-version*"),
	cintern("$Id$"),
	NIL);}


LISP sym_channels = NIL;
long tc_opendir = 0;

char *ld_library_path_env = "LD_LIBRARY_PATH";

#ifdef VMS
char *strdup(char *in)
{char *r;
 r = (char *) malloc(strlen(in)+1);
 strcpy(r,in);
 return(r);}
#endif

LISP lsystem(LISP args)
{int retval;
 long iflag;
 iflag = no_interrupt(1);
 retval = system(get_c_string(string_append(args)));
 no_interrupt(iflag);
 if (retval < 0)
   return(cons(flocons(retval),llast_c_errmsg(-1)));
 else
   return(flocons(retval));}

#ifndef WIN32
LISP lgetuid(void)
{return(flocons(getuid()));}

LISP lgetgid(void)
{return(flocons(getgid()));}
#endif

#if defined(unix) || defined(WIN32)

#if defined(WIN32)
#define getcwd _getcwd
#define PATH_MAX _MAX_PATH
#endif

LISP lgetcwd(void)
{char path[PATH_MAX+1];
 if (getcwd(path,sizeof(path)))
   return(strcons(strlen(path),path));
 else
   return(err("getcwd",llast_c_errmsg(-1)));}

#endif

#ifdef unix


LISP ldecode_pwent(struct passwd *p)
{return(symalist(
		 "name",strcons(strlen(p->pw_name),p->pw_name),
		 "passwd",strcons(strlen(p->pw_passwd),p->pw_passwd),
		 "uid",flocons(p->pw_uid),
		 "gid",flocons(p->pw_gid),
		 "dir",strcons(strlen(p->pw_dir),p->pw_dir),
		 "gecos",strcons(strlen(p->pw_gecos),p->pw_gecos),
#if defined(__osf__) || defined(hpux) || defined(sun)
		 "comment",strcons(strlen(p->pw_comment),p->pw_comment),
#endif
#if defined(hpux) || defined(sun)
		 "age",strcons(strlen(p->pw_age),p->pw_age),
#endif
#if defined(__osf__)
		 "quota",flocons(p->pw_quota),
#endif
		 "shell",strcons(strlen(p->pw_shell),p->pw_shell),
		 NULL));}

static char *strfield(char *name,LISP alist)
{LISP value,key = rintern(name);
 if NULLP(value = assq(key,alist))
   return("");
 return(get_c_string(cdr(value)));}

static long longfield(char *name,LISP alist)
{LISP value,key = rintern(name);
 if NULLP(value = assq(key,alist))
   return(0);
 return(get_c_long(cdr(value)));}
 
void lencode_pwent(LISP alist,struct passwd *p)
{p->pw_name = strfield("name",alist);
 p->pw_passwd = strfield("passwd",alist);
 p->pw_uid = longfield("uid",alist);
 p->pw_gid = longfield("gid",alist);
 p->pw_dir = strfield("dir",alist);
 p->pw_gecos = strfield("gecos",alist);
#if defined(__osf__) || defined(hpux) || defined(sun)
 p->pw_comment = strfield("comment",alist);
#endif
#if defined(hpux) || defined(sun)
 p->pw_age = strfield("age",alist);
#endif
#if defined(__osf__)
 p->pw_quota = longfield("quota",alist);
#endif
 p->pw_shell = strfield("shell",alist);}

LISP lgetpwuid(LISP luid)
{int iflag;
 uid_t uid;
 struct passwd *p;
 LISP result = NIL;
 uid = get_c_long(luid);
 iflag = no_interrupt(1);
 if ((p = getpwuid(uid)))
   result = ldecode_pwent(p);
 no_interrupt(iflag);
 return(result);}

LISP lgetpwnam(LISP nam)
{int iflag;
 struct passwd *p;
 LISP result = NIL;
 iflag = no_interrupt(1);
 if ((p = getpwnam(get_c_string(nam))))
   result = ldecode_pwent(p);
 no_interrupt(iflag);
 return(result);}

LISP lgetpwent(void)
{int iflag;
 LISP result = NIL;
 struct passwd *p;
 iflag = no_interrupt(1);
 if ((p = getpwent()))
   result = ldecode_pwent(p);
 no_interrupt(iflag);
 return(result);}

LISP lsetpwent(void)
{int iflag = no_interrupt(1);
 setpwent();
 no_interrupt(iflag);
 return(NIL);}

LISP lendpwent(void)
{int iflag = no_interrupt(1);
 endpwent();
 no_interrupt(iflag);
 return(NIL);}

LISP lsetuid(LISP n)
{uid_t uid;
 uid = (uid_t) get_c_long(n);
 if (setuid(uid))
   return(err("setuid",llast_c_errmsg(-1)));
 else
   return(NIL);}

LISP lseteuid(LISP n)
{uid_t uid;
 uid = (uid_t) get_c_long(n);
 if (seteuid(uid))
   return(err("seteuid",llast_c_errmsg(-1)));
 else
   return(NIL);}

LISP lgeteuid(void)
{return(flocons(geteuid()));}

#if defined(__osf__)
LISP lsetpwfile(LISP fname)
{int iflag = no_interrupt(1);
 setpwfile(get_c_string(fname));
 no_interrupt(iflag);
 return(NIL);}
#endif

LISP laccess_problem(LISP lfname,LISP lacc)
{char *fname = get_c_string(lfname);
 char *acc = get_c_string(lacc),*p;
 int amode = 0,iflag = no_interrupt(1),retval;
 for(p=acc;*p;++p)
   switch(*p)
     {case 'r':
	amode |= R_OK;
	break;
      case 'w':
	amode |= W_OK;
	break;
      case 'x':
	amode |= X_OK;
	break;
      case 'f':
	amode |= F_OK;
	break;
      default:
	err("bad access mode",lacc);}
 retval = access(fname,amode);
 no_interrupt(iflag);
 if (retval < 0)
   return(llast_c_errmsg(-1));
 else
   return(NIL);}

LISP lsymlink(LISP p1,LISP p2)
{long iflag;
 iflag = no_interrupt(1);
 if (symlink(get_c_string(p1),get_c_string(p2)))
   return(err("symlink",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

LISP llink(LISP p1,LISP p2)
{long iflag;
 iflag = no_interrupt(1);
 if (link(get_c_string(p1),get_c_string(p2)))
   return(err("link",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

LISP lunlink(LISP p)
{long iflag;
 iflag = no_interrupt(1);
 if (unlink(get_c_string(p)))
   return(err("unlink",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

LISP lrmdir(LISP p)
{long iflag;
 iflag = no_interrupt(1);
 if (rmdir(get_c_string(p)))
   return(err("rmdir",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

LISP lmkdir(LISP p,LISP m)
{long iflag;
 iflag = no_interrupt(1);
 if (mkdir(get_c_string(p),get_c_long(m)))
   return(err("mkdir",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

LISP lreadlink(LISP p)
{long iflag;
 char buff[PATH_MAX+1];
 int size;
 iflag = no_interrupt(1);
 if ((size = readlink(get_c_string(p),buff,sizeof(buff))) < 0)
   return(err("readlink",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(strcons(size,buff));}

LISP lrename(LISP p1,LISP p2)
{long iflag;
 iflag = no_interrupt(1);
 if (rename(get_c_string(p1),get_c_string(p2)))
   return(err("rename",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

#endif

LISP lrandom(LISP n)
{int res;
#if defined(hpux) || defined(vms) || defined(sun) || defined(sgi) || defined(WIN32)
 res = rand();
#endif
#if defined(__osf__) || defined(linux)
 res = random();
#endif
 return(flocons(NNULLP(n) ? res % get_c_long(n) : res));}

LISP lsrandom(LISP n)
{long seed;
 seed = get_c_long(n);
#if defined(hpux) || defined(vms) || defined(sun) || defined(sgi) || defined(WIN32)
 srand(seed);
#endif
#if defined(__osf__) || defined(linux)
 srandom(seed);
#endif
 return(NIL);}

#ifdef unix

LISP lfork(void)
{int iflag;
 pid_t pid;
 iflag = no_interrupt(1);
 pid = fork();
 if (pid == 0)
   {no_interrupt(iflag);
    return(NIL);}
 if (pid == -1)
   return(err("fork",llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(flocons(pid));}

#endif

char **list2char(LISP *safe,LISP v)
{char **x,*tmp;
 long j,n;
 LISP l;
 n = get_c_long(llength(v));
 *safe = cons(mallocl(&x,sizeof(char *) * (n + 1)),*safe);
 for(l=v,j=0;j<n;l=cdr(l),++j)
   {tmp = get_c_string(car(l));
    *safe = cons(mallocl(&x[j],strlen(tmp)+1),*safe);
    strcpy(x[j],tmp);}
 x[n] = NULL;
 return(x);}

#ifdef unix

LISP lexec(LISP path,LISP args,LISP env)
{int iflag;
 char **argv = NULL, **envp = NULL;
 LISP gcsafe=NIL;
 iflag = no_interrupt(1);
 argv = list2char(&gcsafe,args);
 if NNULLP(env)
   envp = list2char(&gcsafe,env);
 if (envp)
   execve(get_c_string(path),argv,envp);
 else
   execv(get_c_string(path),argv);
 no_interrupt(iflag);
 return(err("exec",llast_c_errmsg(-1)));}

LISP lnice(LISP val)
{int iflag,n;
 n = get_c_long(val);
 iflag = no_interrupt(1);
 n = nice(n);
 if (n == -1)
   err("nice",llast_c_errmsg(-1));
 no_interrupt(iflag);
 return(flocons(n));}

#endif

int assemble_options(LISP l, ...)
{int result = 0,val,noptions,nmask = 0;
 LISP lsym,lp = NIL;
 char *sym;
 va_list syms;
 if NULLP(l) return(0);
 noptions = CONSP(l) ? get_c_long(llength(l)) : -1;
 va_start(syms,l);
 while((sym = va_arg(syms,char *)))
   {val = va_arg(syms,int);
    lsym = cintern(sym);
    if (EQ(l,lsym) || (CONSP(l) && NNULLP(lp = memq(lsym,l))))
      {result |= val;
       if (noptions > 0)
	 nmask = nmask | (1 << (noptions - get_c_long(llength(lp))));
       else
	 noptions = -2;}}
 va_end(syms);
 if ((noptions == -1) ||
     ((noptions > 0) && (nmask != ((1 << noptions) - 1))))
   err("contains undefined options",l);
 return(result);}

#ifdef unix

LISP lwait(LISP lpid,LISP loptions)
{pid_t pid,ret;
 int iflag,status = 0,options;
 pid = NULLP(lpid) ? -1 : get_c_long(lpid);
 options = assemble_options(loptions,
#ifdef WCONTINUED
			    "WCONTINUED",WCONTINUED,
#endif
#ifdef WNOWAIT
			    "WNOWAIT",WNOWAIT,
#endif
			    "WNOHANG",WNOHANG,
			    "WUNTRACED",WUNTRACED,
			    NULL);
 iflag = no_interrupt(1); 
 ret = waitpid(pid,&status,options);
 no_interrupt(iflag);
 if (ret == 0)
   return(NIL);
 else if (ret == -1)
   return(err("wait",llast_c_errmsg(-1)));
 else
   /* should do more decoding on the status */
   return(cons(flocons(ret),cons(flocons(status),NIL)));}

LISP lkill(LISP pid,LISP sig)
{long iflag;
 iflag = no_interrupt(1);
 if (kill(get_c_long(pid),
	  NULLP(sig) ? SIGKILL : get_c_long(sig)))
   err("kill",llast_c_errmsg(-1));
 else
   no_interrupt(iflag);
 return(NIL);}

#endif

LISP lgetpid(void)
{return(flocons(getpid()));}

#ifdef unix
LISP lgetpgrp(void)
{return(flocons(getpgrp()));}

LISP lsetpgid(LISP pid,LISP pgid)
{if (setpgid(get_c_long(pid),get_c_long(pgid)))
  return(err("setpgid",llast_c_errmsg(-1)));
 else
  return(NIL);}

LISP lgetgrgid(LISP n)
{gid_t gid;
 struct group *gr;
 long iflag,j;
 LISP result = NIL;
 gid = get_c_long(n);
 iflag = no_interrupt(1);
 if ((gr = getgrgid(gid)))
   {result = cons(strcons(strlen(gr->gr_name),gr->gr_name),result);
    for(j=0;gr->gr_mem[j];++j)
      result = cons(strcons(strlen(gr->gr_mem[j]),gr->gr_mem[j]),result);
    result = nreverse(result);}
 no_interrupt(iflag);
 return(result);}

#endif

#ifndef WIN32
LISP lgetppid(void)
{return(flocons(getppid()));}
#endif

LISP lmemref_byte(LISP addr)
{unsigned char *ptr = (unsigned char *) get_c_long(addr);
 return(flocons(*ptr));}

LISP lexit(LISP val)
{int iflag = no_interrupt(1);
 exit(get_c_long(val));
 no_interrupt(iflag);
 return(NIL);}

LISP ltrunc(LISP x)
{long i;
 if NFLONUMP(x) err("wta to trunc",x);
 i = (long) FLONM(x);
 return(flocons((double) i));}

#ifdef unix
LISP lputenv(LISP lstr)
{char *orig,*cpy;
 orig = get_c_string(lstr);
 /* unix putenv keeps a pointer to the string we pass,
    therefore we must make a fresh copy, which is memory leaky. */
 cpy = (char *) must_malloc(strlen(orig)+1);
 strcpy(cpy,orig);
  if (putenv(cpy))
   return(err("putenv",llast_c_errmsg(-1)));
 else
   return(NIL);}
#endif

#if defined(__osf__) || defined(sun)

void handle_sigxcpu(int sig)
{struct rlimit x;
 if (getrlimit(RLIMIT_CPU,&x))
   {errjmp_ok = 0;
    err("getrlimit",llast_c_errmsg(-1));}
 if (x.rlim_cur >= x.rlim_max)
   {errjmp_ok = 0;
    err("hard cpu limit exceded",NIL);}
 if (nointerrupt == 1)
   interrupt_differed = 1;
 else
   err("cpu limit exceded",NIL);}

LISP cpu_usage_limits(LISP soft,LISP hard)
{struct rlimit x;
 if (NULLP(soft) && NULLP(hard))
   {if (getrlimit(RLIMIT_CPU,&x))
      return(err("getrlimit",llast_c_errmsg(-1)));
    else
      return(listn(2,flocons(x.rlim_cur),flocons(x.rlim_max)));}
 else
   {x.rlim_cur = get_c_long(soft);
    x.rlim_max = get_c_long(hard);
    signal(SIGXCPU,handle_sigxcpu);
    if (setrlimit(RLIMIT_CPU,&x))
      return(err("setrlimit",llast_c_errmsg(-1)));
    else
      return(NIL);}}

#endif

#if defined(unix)

static int handle_sigalrm_flag = 0;

void handle_sigalrm(int sig)
{if (nointerrupt == 1)
  {if (handle_sigalrm_flag)
    /* If we were inside a system call then it would be
       interrupted even if we take no action here.
       But sometimes we want to be really sure of signalling
       an error, hence the flag. */
    interrupt_differed = 1;}
 else
   err("alarm signal",NIL);}

LISP lalarm(LISP seconds,LISP flag)
{long iflag;
 int retval;
 iflag = no_interrupt(1);
 signal(SIGALRM,handle_sigalrm);
 handle_sigalrm_flag = NULLP(flag) ? 0 : 1;
 retval = alarm(get_c_long(seconds));
 no_interrupt(iflag);
 return(flocons(retval));}

#endif


#if defined(__osf__) || defined(SUN5)

#define TV_FRAC(x) (((double)x.tv_usec) * 1.0e-6)

#ifdef SUN5
int getrusage(int,struct rusage *);
#endif

LISP current_resource_usage(LISP kind)
{struct rusage u;
 int code;
 if (NULLP(kind) || EQ(cintern("SELF"),kind))
   code = RUSAGE_SELF;
 else if EQ(cintern("CHILDREN"),kind)
   code = RUSAGE_CHILDREN;
 else
   return(err("unknown rusage",kind));
 if (getrusage(code,&u))
   return(err("getrusage",llast_c_errmsg(-1)));
 return(symalist("utime",flocons(((double)u.ru_utime.tv_sec) +
				 TV_FRAC(u.ru_utime)),
		 "stime",flocons(((double)u.ru_stime.tv_sec) +
				 TV_FRAC(u.ru_stime)),
		 "maxrss",flocons(u.ru_maxrss),
		 "ixrss",flocons(u.ru_ixrss),
		 "idrss",flocons(u.ru_idrss),
		 "isrss",flocons(u.ru_isrss),
		 "minflt",flocons(u.ru_minflt),
		 "majflt",flocons(u.ru_majflt),
		 "nswap",flocons(u.ru_nswap),
		 "inblock",flocons(u.ru_inblock),
		 "oublock",flocons(u.ru_oublock),
		 "msgsnd",flocons(u.ru_msgsnd),
		 "msgrcv",flocons(u.ru_msgrcv),
		 "nsignals",flocons(u.ru_nsignals),
		 "nvcsw",flocons(u.ru_nvcsw),
		 "nivcsw",flocons(u.ru_nivcsw),
		 NULL));}

#endif

#ifdef unix

LISP l_opendir(LISP name)
{long iflag;
 LISP value;
 DIR *d;
 iflag = no_interrupt(1);
 value = cons(NIL,NIL);
 if (!(d = opendir(get_c_string(name))))
   return(err("opendir",llast_c_errmsg(-1)));
 value->type = tc_opendir;
 CAR(value) = (LISP) d;
 no_interrupt(iflag);
 return(value);}

DIR *get_opendir(LISP v,long oflag)
{if NTYPEP(v,tc_opendir) err("not an opendir",v);
 if NULLP(CAR(v))
   {if (oflag) err("opendir not open",v);
    return(NULL);}
 return((DIR *)CAR(v));}

LISP l_closedir(LISP v)
{long iflag,old_errno;
 DIR *d;
 iflag = no_interrupt(1);
 d = get_opendir(v,1);
 old_errno = errno;
 CAR(v) = NIL;
 if (closedir(d))
   return(err("closedir",llast_c_errmsg(old_errno)));
 no_interrupt(iflag);
 return(NIL);}

void  opendir_gc_free(LISP v)
{DIR *d;
 if ((d = get_opendir(v,0)))
   closedir(d);}

LISP l_readdir(LISP v)
{long iflag,namlen;
 DIR *d;
 struct dirent *r;
 d = get_opendir(v,1);
 iflag = no_interrupt(1);
 r = readdir(d);
 no_interrupt(iflag);
 if (!r) return(NIL);
#if defined(sun) || defined(sgi) || defined(linux)
 namlen = safe_strlen(r->d_name,r->d_reclen);
#elif defined(__CYGWIN__)
 namlen = strlen(r->d_name);
#else
 namlen = r->d_namlen;
#endif
 return(strcons(namlen,r->d_name));}

void opendir_prin1(LISP ptr,struct gen_printio *f)
{char buffer[256];
 sprintf(buffer,"#<OPENDIR %p>",get_opendir(ptr,0));
 gput_st(f,buffer);}

#endif

#ifdef WIN32

typedef struct
{long count;
 HANDLE h;
 WIN32_FIND_DATA s;} DIR;

LISP llast_win32_errmsg(DWORD status)
{DWORD len,msgcode;
 char buffer[256];
 msgcode = (status == 0) ? GetLastError() : status;
 len = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
	                 FORMAT_MESSAGE_IGNORE_INSERTS |
					 FORMAT_MESSAGE_MAX_WIDTH_MASK,
	                 0,
					 msgcode,
					 0, /* what language? */
					 buffer,
					 sizeof(buffer),
					 NULL);
 if (len)
   return(strcons(len,buffer));
 else
   return(flocons(msgcode));}

LISP l_opendir(LISP name)
{long iflag;
 LISP value;
 DIR *d;
 iflag = no_interrupt(1);
 value = cons(NIL,NIL);
 d = (DIR *) must_malloc(sizeof(DIR));
 d->h = INVALID_HANDLE_VALUE;
 value->type = (short) tc_opendir;
 d->count = 0;
 CAR(value) = (LISP) d;
 if ((d->h = FindFirstFile(get_c_string(name),&d->s)) == INVALID_HANDLE_VALUE)
   return(err("FindFirstFile",llast_win32_errmsg(0)));
 no_interrupt(iflag);
 return(value);}

DIR *get_opendir(LISP v,long oflag)
{if NTYPEP(v,tc_opendir) err("not an opendir",v);
 if NULLP(CAR(v))
   {if (oflag) err("opendir not open",v);
    return(NULL);}
 return((DIR *)CAR(v));}

LISP l_closedir(LISP v)
{long iflag;
 DIR *d;
 HANDLE h;
 iflag = no_interrupt(1);
 d = get_opendir(v,1);
 CAR(v) = NIL;
 h = d->h;
 free(d);
 if ((h != INVALID_HANDLE_VALUE) && !FindClose(h))
   return(err("closedir",llast_win32_errmsg(0)));
 no_interrupt(iflag);
 return(NIL);}

void  opendir_gc_free(LISP v)
{DIR *d;
 if ((d = get_opendir(v,0)))
   {FindClose(d->h);
    free(d);
	CAR(v) = NIL;}}

LISP l_readdir(LISP v)
{long iflag;
 DIR *d;
 d = get_opendir(v,1);
 iflag = no_interrupt(1);
 if (d->count > 0)
   if (!FindNextFile(d->h,&d->s))
	 if (GetLastError() == ERROR_NO_MORE_FILES)
	   {no_interrupt(1);
        return(NIL);}
 ++d->count;
 no_interrupt(iflag);
 return(strcons(-1,d->s.cFileName));}

void opendir_prin1(LISP ptr,struct gen_printio *f)
{char buffer[256];
 sprintf(buffer,"#<OPENDIR %p>",get_opendir(ptr,0));
 gput_st(f,buffer);}

#endif

LISP file_times(LISP fname)
{struct stat st;
 int iflag,ret;
 iflag = no_interrupt(1);
 ret = stat(get_c_string(fname),&st);
 no_interrupt(iflag);
 if (ret)
   return(NIL);
 else
   return(cons(flocons(st.st_ctime),
	       cons(flocons(st.st_mtime),NIL)));}

#if defined(unix) || defined(WIN32)

#if defined(unix)
LISP decode_st_moden(mode_t mode)
{LISP ret = NIL;
 if (mode & S_ISUID) ret = cons(cintern("SUID"),ret);
 if (mode & S_ISGID) ret = cons(cintern("SGID"),ret);
 if (mode & S_IRUSR) ret = cons(cintern("RUSR"),ret);
 if (mode & S_IWUSR) ret = cons(cintern("WUSR"),ret);
 if (mode & S_IXUSR) ret = cons(cintern("XUSR"),ret);
 if (mode & S_IRGRP) ret = cons(cintern("RGRP"),ret);
 if (mode & S_IWGRP) ret = cons(cintern("WGRP"),ret);
 if (mode & S_IXGRP) ret = cons(cintern("XGRP"),ret);
 if (mode & S_IROTH) ret = cons(cintern("ROTH"),ret);
 if (mode & S_IWOTH) ret = cons(cintern("WOTH"),ret);
 if (mode & S_IXOTH) ret = cons(cintern("XOTH"),ret);
 if (S_ISFIFO(mode)) ret = cons(cintern("FIFO"),ret);
 if (S_ISDIR(mode)) ret = cons(cintern("DIR"),ret);
 if (S_ISCHR(mode)) ret = cons(cintern("CHR"),ret);
 if (S_ISBLK(mode)) ret = cons(cintern("BLK"),ret);
 if (S_ISREG(mode)) ret = cons(cintern("REG"),ret);
 if (S_ISLNK(mode)) ret = cons(cintern("LNK"),ret);
 if (S_ISSOCK(mode)) ret = cons(cintern("SOCK"),ret);
 return(ret);}

LISP encode_st_mode(LISP l)
{return(flocons(assemble_options(l,
				 "SUID",S_ISUID,
				 "SGID",S_ISGID,
				 "RUSR",S_IRUSR,
				 "WUSR",S_IWUSR,
				 "XUSR",S_IXUSR,
				 "RGRP",S_IRGRP,
				 "WGRP",S_IWGRP,
				 "XGRP",S_IXGRP,
				 "ROTH",S_IROTH,
				 "WOTH",S_IWOTH,
				 "XOTH",S_IXOTH,
				 NULL)));}
#endif

#ifdef WIN32

LISP decode_st_moden(int mode)
{LISP ret = NIL;
 if (mode & _S_IREAD) ret = cons(cintern("RUSR"),ret);
 if (mode & _S_IWRITE) ret = cons(cintern("WUSR"),ret);
 if (mode & _S_IEXEC) ret = cons(cintern("XUSR"),ret);
 if (mode & _S_IFDIR) ret = cons(cintern("DIR"),ret);
 if (mode & _S_IFCHR) ret = cons(cintern("CHR"),ret);
 if (mode & _S_IFREG) ret = cons(cintern("REG"),ret);
 return(ret);}

LISP encode_st_mode(LISP l)
{return(flocons(assemble_options(l,
				 "RUSR",_S_IREAD,
				 "WUSR",_S_IWRITE,
				 "XUSR",_S_IEXEC,
				 NULL)));}
#endif

LISP decode_st_mode(LISP value)
{return(decode_st_moden(get_c_long(value)));}

LISP decode_stat(struct stat *s)
{return(symalist("dev",flocons(s->st_dev),
		 "ino",flocons(s->st_ino),
		 "mode",decode_st_moden(s->st_mode),
		 "nlink",flocons(s->st_nlink),
		 "uid",flocons(s->st_uid),
		 "gid",flocons(s->st_gid),
		 "rdev",flocons(s->st_rdev),
		 "size",flocons(s->st_size),
		 "atime",flocons(s->st_atime),
		 "mtime",flocons(s->st_mtime),
		 "ctime",flocons(s->st_ctime),
#if defined(unix)
		 "blksize",flocons(s->st_blksize),
		 "blocks",flocons(s->st_blocks),
#endif
#if defined(__osf__)
		 "flags",flocons(s->st_flags),
		 "gen",flocons(s->st_gen),
#endif
		 NULL));}
	      

LISP g_stat(LISP fname,int (*fcn)(const char *,struct stat *))
{struct stat st;
 int iflag,ret;
 iflag = no_interrupt(1);
 memset(&st,0,sizeof(struct stat));
 ret = (*fcn)(get_c_string(fname),&st);
 no_interrupt(iflag);
 if (ret)
   return(NIL);
 else
   return(decode_stat(&st));}

LISP l_stat(LISP fname)
{return(g_stat(fname,stat));}

LISP l_fstat(LISP f)
{struct stat st;
 int iflag,ret;
 iflag = no_interrupt(1);
 ret = fstat(fileno(get_c_file(f,NULL)),&st);
 no_interrupt(iflag);
 if (ret)
   return(NIL);
 else
   return(decode_stat(&st));}

#ifdef unix
LISP l_lstat(LISP fname)
{return(g_stat(fname,lstat));}
#endif

#if defined(__osf__) || defined(SUN5)

LISP l_fnmatch(LISP pat,LISP str,LISP flgs)
{if (fnmatch(get_c_string(pat),
	     get_c_string(str),
	     0))
   return(NIL);
 else
   return(a_true_value());}

#endif

#if defined(unix) || defined(WIN32)

LISP l_chmod(LISP path,LISP mode)
{if (chmod(get_c_string(path),get_c_long(mode)))
   return(err("chmod",llast_c_errmsg(-1)));
 else
   return(NIL);}

#endif


#ifdef unix

LISP lutime(LISP fname,LISP mod,LISP ac)
{struct utimbuf x;
 x.modtime = get_c_long(mod);
 x.actime = NNULLP(ac) ? get_c_long(ac) : time(NULL);
 if (utime(get_c_string(fname), &x))
   return(err("utime",llast_c_errmsg(-1)));
 else
   return(NIL);}


LISP lfchmod(LISP file,LISP mode)
{if (fchmod(fileno(get_c_file(file,NULL)),get_c_long(mode)))
   return(err("fchmod",llast_c_errmsg(-1)));
 else
   return(NIL);}

LISP encode_open_flags(LISP l)
{return(flocons(assemble_options(l,
				 "NONBLOCK",O_NONBLOCK,
				 "APPEND",O_APPEND,
				 "RDONLY",O_RDONLY,
				 "WRONLY",O_WRONLY,
				 "RDWR",O_RDWR,
				 "CREAT",O_CREAT,
				 "TRUNC",O_TRUNC,
				 "EXCL",O_EXCL,
				 NULL)));}

int get_fd(LISP ptr)
{if TYPEP(ptr,tc_c_file)
   return(fileno(get_c_file(ptr,NULL)));
 else
   return(get_c_long(ptr));}

LISP gsetlk(int op,LISP lfd,LISP ltype,LISP whence,LISP start,LISP len)
{struct flock f;
 int fd = get_fd(lfd);
 f.l_type = get_c_long(ltype);
 f.l_whence = NNULLP(whence) ? get_c_long(whence) : SEEK_SET;
 f.l_start = NNULLP(start) ? get_c_long(start) : 0;
 f.l_len = NNULLP(len) ? get_c_long(len) : 0;
 f.l_pid = 0;
 if (fcntl(fd,op,&f) == -1)
   return(llast_c_errmsg(-1));
 else if (op != F_GETLK)
   return(NIL);
 else if (f.l_type == F_UNLCK)
   return(NIL);
 else
   return(listn(2,flocons(f.l_type),flocons(f.l_pid)));}

LISP lF_SETLK(LISP fd,LISP ltype,LISP whence,LISP start,LISP len)
{return(gsetlk(F_SETLK,fd,ltype,whence,start,len));}

LISP lF_SETLKW(LISP fd,LISP ltype,LISP whence,LISP start,LISP len)
{return(gsetlk(F_SETLKW,fd,ltype,whence,start,len));}

LISP lF_GETLK(LISP fd,LISP ltype,LISP whence,LISP start,LISP len)
{return(gsetlk(F_GETLK,fd,ltype,whence,start,len));}

#endif

#endif

LISP delete_file(LISP fname)
{int iflag,ret;
 iflag = no_interrupt(1);
#ifdef VMS
 ret = delete(get_c_string(fname));
#else
 ret = unlink(get_c_string(fname));
#endif
 no_interrupt(iflag);
 if (ret)
   return(strcons(-1,last_c_errmsg(-1)));
 else
   return(NIL);}

LISP utime2str(LISP u)
{time_t bt;
 struct tm *btm;
 char sbuff[100];
 bt = get_c_long(u);
 if ((btm = localtime(&bt)))
   {sprintf(sbuff,"%04d%02d%02d%02d%02d%02d%02d",
	    btm->tm_year+1900,btm->tm_mon + 1,btm->tm_mday,
	    btm->tm_hour,btm->tm_min,btm->tm_sec,0);
    return(strcons(strlen(sbuff),sbuff));}
 else
   return(NIL);}

#ifdef WIN32
LISP win32_debug(void)
{DebugBreak();
 return(NIL);}
#endif

#ifdef VMS

LISP vms_debug(arg)
     LISP arg;
{unsigned char arg1[257];
 char *data;
 if NULLP(arg)
   lib$signal(SS$_DEBUG,0);
 else
   {data = get_c_string(arg);
    arg1[0] = strlen(data);
    memcpy(&arg1[1],data,arg1[0]);
    lib$signal(SS$_DEBUG,1,arg1);}
 return(NIL);}

struct dsc$descriptor *set_dsc_cst(struct dsc$descriptor *d,char *s)
{d->dsc$w_length = strlen(s);
 d->dsc$b_dtype = DSC$K_DTYPE_T;
 d->dsc$b_class = DSC$K_CLASS_S;
 d->dsc$a_pointer = s;
 return(d);}


void err_vms(long retval)
{char *errmsg,buff[100];
 if (errmsg = strerror(EVMSERR,retval))
   err(errmsg,NIL);
 else
   {sprintf(buff,"VMS ERROR %d",retval);
    err(buff,NIL);}}

LISP lcrembx(LISP l)
{LISP tmp;
 short chan;
 int prmflg,maxmsg,bufquo,promsk,acmode,iflag,retval;
 struct dsc$descriptor lognam;
 set_dsc_cst(&lognam,get_c_string(car(l)));
 tmp = cadr(assq(cintern("prmflg"),l));
 prmflg = NNULLP(tmp) ? 1 : 0;
 tmp = cadr(assq(cintern("maxmsg"),l));
 maxmsg = NNULLP(tmp) ? get_c_long(tmp) : 0;
 tmp = cadr(assq(cintern("bufquo"),l));
 bufquo = NNULLP(tmp) ? get_c_long(tmp) : 0;
 tmp = cadr(assq(cintern("promsk"),l));
 promsk = NNULLP(tmp) ? get_c_long(tmp) : 0;
 tmp = cadr(assq(cintern("acmode"),l));
 acmode = NNULLP(tmp) ? get_c_long(tmp) : 0;
 tmp = cons(flocons(-1),leval(sym_channels,NIL));
 iflag = no_interrupt(1);
 retval = sys$crembx(prmflg,&chan,maxmsg,bufquo,promsk,acmode,&lognam);
 if (retval != SS$_NORMAL)
   {no_interrupt(iflag);
    err_vms(retval);}
 setvar(sym_channels,tmp,NIL);
 tmp = car(tmp);
 tmp->storage_as.flonum.data = chan;
 no_interrupt(iflag);
 return(tmp);}

LISP lset_logical(LISP name,LISP value,LISP table,LISP attributes)
{struct dsc$descriptor dname,dvalue,dtable;
 long status,iflag;
 iflag = no_interrupt(1);
 status = lib$set_logical(set_dsc_cst(&dname,get_c_string(name)),
			  NULLP(value) ? 0 : set_dsc_cst(&dvalue,
							 get_c_string(value)),
			  NULLP(table) ? 0 : set_dsc_cst(&dtable,
							 get_c_string(table)),
			  assemble_options(attributes,
					   "NO_ALIAS",LNM$M_NO_ALIAS,
					   "CONFINE",LNM$M_CONFINE,
					   "CRELOG",LNM$M_CRELOG,
					   "TABLE",LNM$M_TABLE,
					   "CONCEALED",LNM$M_CONCEALED,
					   "TERMINAL",LNM$M_TERMINAL,
					   "EXISTS",LNM$M_EXISTS,
					   "SHAREABLE",LNM$M_SHAREABLE,
					   "CREATE_IF",LNM$M_CREATE_IF,
					   "CASE_BLIND",LNM$M_CASE_BLIND,
					   NULL),
			  0);
 if (status != SS$_NORMAL)
   err_vms(status);
 no_interrupt(iflag);
 return(NIL);}

#endif

LISP lgetenv(LISP var)
{char *str;
 if ((str = getenv(get_c_string(var))))
   return(strcons(strlen(str),str));
 else
   return(NIL);}

LISP unix_time(void)
{return(flocons(time(NULL)));}

LISP unix_ctime(LISP value)
{time_t b;
 char *buff,*p;
 if NNULLP(value)
   b = get_c_long(value);
 else
   time(&b);
 if ((buff = ctime(&b)))
   {if ((p = strchr(buff,'\n'))) *p = 0;
    return(strcons(strlen(buff),buff));}
 else
   return(NIL);}

LISP http_date(LISP value)
     /* returns the internet standard RFC 1123 format */
{time_t b;
 char buff[256];
 struct tm *t;
 if NNULLP(value)
   b = get_c_long(value);
 else
   time(&b);
 if (!(t = gmtime(&b))) return(NIL);
 (sprintf
  (buff,"%s, %02d %s %04d %02d:%02d:%02d GMT",
   &"Sun\0Mon\0Tue\0Wed\0Thu\0Fri\0Sat"[t->tm_wday*4],
   t->tm_mday,
   &"Jan\0Feb\0Mar\0Apr\0May\0Jun\0Jul\0Aug\0Sep\0Oct\0Nov\0Dec"[t->tm_mon*4],
   t->tm_year+1900,
   t->tm_hour,
   t->tm_min,
   t->tm_sec));
 return(strcons(strlen(buff),buff));}

#if defined(__osf__)

LISP http_date_parse(LISP input)
     /* handle RFC 822, RFC 850, RFC 1123 and the ANSI C ascitime() format */
{struct tm tm,*lc;
 time_t t;
 int gmtoff;
 char *str = get_c_string(input),*format;
 t = time(NULL);
 if (lc = localtime(&t))
   gmtoff = lc->tm_gmtoff;
 if (strchr(str,',') && strchr(str,'-')) 
   /* rfc-850: Sunday, 06-Nov-94 08:49:37 GMT */
   format = "%a, %d-%b-%y %H:%M:%S GMT";
 else if (strchr(str,','))
   /* rfc-1123: Sun, 06 Nov 1994 08:49:37 GMT */
   format = "%a, %d %b %Y %H:%M:%S GMT";
 else
   /* ascitime: Sun Nov  6 08:49:37 1994 */
   {format = "%c";
    gmtoff = 0;}
 if (strptime(str,format,&tm))
   {t = mktime(&tm);
    /* unfortunately there is no documented way to tell mktime
       to assume GMT. Except for saving the value of the current
       timezone, setting TZ to GMT, doing a tzset() then doing
       our mktime() followed by setting the time zone back to the way
       it was before. That is fairly horrible, so instead we work around
       this by adding the gmtoff we computed above, which of course may
       have changed since we computed it (if the system manager switched
       daylight savings time modes, for example).
       There is an executable /usr/lib/mh/dp which is presumably
       doing the same sort of thing, although perhaps it uses tzset */
    return(flocons(t + gmtoff));}
 else
   return(NIL);}

#endif


#ifdef hpux
long usleep(unsigned int winks)	/* added, dcd */
{
  struct timeval sleepytime;
  sleepytime.tv_sec = winks / 1000000;
  sleepytime.tv_usec = winks % 1000000;
  return select(0,0,0,0,&sleepytime);
}
#endif

#if defined(sun_old) || defined(sgi)
long usleep(unsigned int winks)
{struct timespec x;
 x.tv_sec = winks / 1000000;
 x.tv_nsec = (winks % 1000000) * 1000;
 return(nanosleep(&x,NULL));}
#endif

LISP lsleep(LISP ns)
{double val = get_c_double(ns);
#ifdef unix
 usleep((unsigned int)(val * 1.0e6));
#else
#ifdef WIN32
 Sleep((DWORD)(val * 1000));
#else
 sleep((unsigned int)val);
#endif
#endif
 return(NIL);}

LISP url_encode(LISP in)
{int spaces=0,specials=0,regulars=0,c;
 char *str = get_c_string(in),*p,*r;
 LISP out;
 for(p=str,spaces=0,specials=0,regulars=0;(c = *p);++p)
   if (c == ' ') ++spaces;
   else if (!(isalnum(c) || strchr("*-._@",c))) ++specials;
   else ++regulars;
 if ((spaces == 0) && (specials == 0))
   return(in);
 out = strcons(spaces + regulars + specials * 3,NULL);
 for(p=str,r=get_c_string(out);(c = *p);++p)
   if (c == ' ')
     *r++ = '+';
   else if (!(isalnum(c) || strchr("*-._@",c)))
     {sprintf(r,"%%%02X",c & 0xFF);
      r += 3;}
   else
     *r++ = c;
 *r = 0;
 return(out);}

LISP url_decode(LISP in)
{int pluses=0,specials=0,regulars=0,c,j;
 char *str = get_c_string(in),*p,*r;
 LISP out;
 for(p=str,pluses=0,specials=0,regulars=0;(c = *p);++p)
   if (c == '+') ++pluses;
   else if (c == '%')
     {if (isxdigit(p[1]) && isxdigit(p[2]))
	++specials;
      else
	return(NIL);}
   else
     ++regulars;
 if ((pluses == 0) && (specials == 0))
   return(in);
 out = strcons(regulars + pluses + specials,NULL);
 for(p=str,r=get_c_string(out);(c = *p);++p)
   if (c == '+')
     *r++ = ' ';
   else if (c == '%')
     {for(*r = 0,j=1;j<3;++j)
	*r = *r * 16 + ((isdigit(p[j]))
			? (p[j] - '0')
			: (toupper(p[j]) - 'A' + 10));
      p += 2;
      ++r;}
   else
     *r++ = c;
 *r = 0;
 return(out);}

LISP html_encode(LISP in)
{long j,n,m;
 char *str,*ptr;
 LISP out;
 switch(TYPE(in))
   {case tc_string:
    case tc_symbol:
      break;
    default:
      return(in);}
 str = get_c_string(in);
 n = strlen(str);
 for(j=0,m=0;j < n; ++j)
   switch(str[j])
     {case '>':
      case '<':
	m += 4;
	break;
      case '&':
	m += 5;
	break;
      case '"':
	m += 6;
        break;
      default:
	++m;}
 if (n == m) return(in);
 out = strcons(m,NULL);
 for(j=0,ptr=get_c_string(out);j < n; ++j)
   switch(str[j])
     {case '>':
	strcpy(ptr,"&gt;");
	ptr += strlen(ptr);
	break;
      case '<':
	strcpy(ptr,"&lt;");
	ptr += strlen(ptr);
	break;
      case '&':
	strcpy(ptr,"&amp;");
	ptr += strlen(ptr);
	break;
      case '"':
        strcpy(ptr,"&quot;");
	ptr += strlen(ptr);
	break;
      default:
	*ptr++ = str[j];}
 return(out);}

LISP html_decode(LISP in)
{return(in);}

LISP lgets(LISP file,LISP buffn)
{FILE *f;
 int iflag;
 long n;
 char buffer[2048],*ptr;
 f = get_c_file(file,stdin);
 if NULLP(buffn)
   n = sizeof(buffer);
 else if ((n = get_c_long(buffn)) < 0)
   err("size must be >= 0",buffn);
 else if (n > sizeof(buffer))
   err("not handling buffer of size",listn(2,buffn,flocons(sizeof(buffer))));
 iflag = no_interrupt(1);
 if ((ptr = fgets(buffer,n,f)))
   {no_interrupt(iflag);
    return(strcons(strlen(buffer),buffer));}
 no_interrupt(iflag);
 return(NIL);}

LISP readline(LISP file)
{LISP result;
 char *start,*ptr;
 result = lgets(file,NIL);
 if NULLP(result) return(NIL);
 start = get_c_string(result);
 if ((ptr = strchr(start,'\n')))
   {*ptr = 0;
    /* we also change the dim, because otherwise our equal? function
       is confused. What we really need are arrays with fill pointers. */
    result->storage_as.string.dim = ptr - start;
    return(result);}
 else
   /* we should be doing lgets until we  get a string with a newline or NIL,
      and then append the results */
   return(result);}

#ifndef WIN32

LISP l_chown(LISP path,LISP uid,LISP gid)
{long iflag;
 iflag = no_interrupt(1);
 if (chown(get_c_string(path),get_c_long(uid),get_c_long(gid)))
   err("chown",cons(path,llast_c_errmsg(-1)));
 no_interrupt(iflag);
 return(NIL);}

#endif

#ifdef unix

LISP popen_l(LISP name,LISP how)
{return(fopen_cg(popen,
		 get_c_string(name),
		 NULLP(how) ? "r" : get_c_string(how)));}

/* note: if the user fails to call pclose then the gc is going
         to utilize fclose, which can result in a <defunct>
	 process laying around. However, we don't want to
	 modify file_gc_free nor add a new datatype.
	 So beware.
	 */
LISP pclose_l(LISP ptr)
{FILE *f = get_c_file(ptr,NULL);
 long iflag = no_interrupt(1);
 int retval,xerrno;
 retval = pclose(f);
 xerrno = errno;
 ptr->storage_as.c_file.f = (FILE *) NULL;
 free(ptr->storage_as.c_file.name);
 ptr->storage_as.c_file.name = NULL;
 no_interrupt(iflag);
 if (retval < 0)
   err("pclose",llast_c_errmsg(xerrno));
 return(flocons(retval));}

#endif

LISP so_init_name(LISP fname,LISP iname)
{LISP init_name;
 if NNULLP(iname)
   init_name = iname;
 else
   {init_name = car(last(lstrbreakup(fname,cintern("/"))));
#if !defined(VMS)
    init_name = lstrunbreakup(butlast(lstrbreakup(init_name,cintern("."))),
			      cintern("."));
#endif
    init_name = string_append(listn(2,cintern("init_"),init_name));}
 return(intern(init_name));}

LISP so_ext(LISP fname)
{char *ext = ".so";
 LISP lext;
#if defined(hpux)
 ext = ".sl";
#endif
#if defined(vms)
 ext = "";
#endif
#if defined(WIN32)
 ext = ".dll";
#endif
 lext = strcons(strlen(ext),ext);
 if NULLP(fname)
   return(lext);
 else
   return(string_append(listn(2,fname,lext)));}

LISP load_so(LISP fname,LISP iname)
     /* note: error cases can leak memory in this procedure. */
{LISP init_name;
 void (*fcn)(void) = NULL;
#if defined(__osf__) || defined(sun) || defined(linux) || defined(sgi)
 void *handle;
#endif
#if defined(hpux)
 shl_t handle;
#endif
#if defined(VMS)
 struct dsc$descriptor filename,symbol,defaultd;
 long status;
 LISP dsym;
#endif
#ifdef WIN32
 HINSTANCE handle;
#endif
 long iflag;
 init_name = so_init_name(fname,iname);
 iflag = no_interrupt(1);
 if (siod_verbose_check(3))
   {put_st("so-loading ");
    put_st(get_c_string(fname));
    put_st("\n");}
#if 0
/* Too platform-dependent for llvm-test to handle, and the test doesn't
 * use it anyway. */
#if defined(__osf__) || defined(sun) || defined(linux) || defined(sgi)
#if !defined(__osf__)
 /* Observed bug: values of LD_LIBRARY_PATH established with putenv
    -after- a process has started are ignored. Work around follows. */
 if (access(get_c_string(fname),F_OK))
   fname = string_append(listn(3,
			       strcons(-1,siod_lib),
			       strcons(-1,"/"),
			       fname));
#endif
 if (!(handle = dlopen(get_c_string(fname),RTLD_LAZY)))
   err(dlerror(),fname);
 if (!(fcn = dlsym(handle,get_c_string(init_name))))
   err(dlerror(),init_name);
#endif
#if defined(hpux)
 if (access(get_c_string(fname),F_OK))
   fname = string_append(listn(3,
			       strcons(-1,siod_lib),
			       strcons(-1,"/"),
			       fname));
 if (!(handle = shl_load(get_c_string(fname),BIND_DEFERRED,0L)))
   err("shl_load",llast_c_errmsg(errno));
 if (shl_findsym(&handle,get_c_string(init_name),TYPE_PROCEDURE,&fcn))
   err("shl_findsym",llast_c_errmsg(errno));
#endif
#if defined(VMS)
 dsym = cintern("*require-so-dir*");
 if (NNULLP(symbol_boundp(dsym,NIL)) && NNULLP(symbol_value(dsym,NIL)))
   set_dsc_cst(&defaultd,get_c_string(symbol_value(dsym,NIL)));
 else
   dsym = NIL;
 status = lib$find_image_symbol(set_dsc_cst(&filename,
					    get_c_string(fname)),
				set_dsc_cst(&symbol,
					    get_c_string(init_name)),
				&fcn,
				NULLP(dsym) ? 0 : &defaultd);
 if (status != SS$_NORMAL)
   err_vms(status);
#endif
#ifdef WIN32
 if (!(handle = LoadLibrary(get_c_string(fname))))
   err("LoadLibrary",fname);
 if (!(fcn = (LPVOID)GetProcAddress(handle,get_c_string(init_name))))
   err("GetProcAddress",init_name);
#endif
#endif
 if (fcn)
   (*fcn)();
 else
   err("did not load function",init_name);
 no_interrupt(iflag);
 if (siod_verbose_check(3))
   put_st("done.\n");
 return(init_name);}

LISP require_so(LISP fname)
{LISP init_name;
 init_name = so_init_name(fname,NIL);
 if (NULLP(symbol_boundp(init_name,NIL)) ||
     NULLP(symbol_value(init_name,NIL)))
   {load_so(fname,NIL);
    return(setvar(init_name,a_true_value(),NIL));}
 else
   return(NIL);}

LISP siod_lib_l(void)
{return(rintern(siod_lib));}


LISP ccall_catch_1(LISP (*fcn)(void *),void *arg)
{LISP val;
 val = (*fcn)(arg);
 catch_framep = catch_framep->next;
 return(val);}

LISP ccall_catch(LISP tag,LISP (*fcn)(void *),void *arg)
{struct catch_frame frame;
 int k;
 frame.tag = tag;
 frame.next = catch_framep;
 k = setjmp(frame.cframe);
 catch_framep = &frame;
 if (k == 2)
   {catch_framep = frame.next;
    return(frame.retval);}
 return(ccall_catch_1(fcn,arg));}

LISP decode_tm(struct tm *t)
{return(symalist("sec",flocons(t->tm_sec),
		 "min",flocons(t->tm_min),
		 "hour",flocons(t->tm_hour),
		 "mday",flocons(t->tm_mday),
		 "mon",flocons(t->tm_mon),
		 "year",flocons(t->tm_year),
		 "wday",flocons(t->tm_wday),
		 "yday",flocons(t->tm_yday),
		 "isdst",flocons(t->tm_isdst),
#if defined(__osf__)
		 "gmtoff",flocons(t->__tm_gmtoff),
		 "tm_zone",(t->__tm_zone) ? rintern(t->__tm_zone) : NIL,
#endif
		 NULL));}

LISP symalist(char *arg,...)
{va_list args;
 LISP result,l,val;
 char *key;
 if (!arg) return(NIL);
 va_start(args,arg);
 val = va_arg(args,LISP);
 result = cons(cons(cintern(arg),val),NIL);
 l = result;
 while((key = va_arg(args,char *)))
   {val = va_arg(args,LISP);
    CDR(l) = cons(cons(cintern(key),val),NIL);
    l = CDR(l);}
 va_end(args);
 return(result);}

void encode_tm(LISP alist,struct tm *t)
{LISP val;
 val = cdr(assq(cintern("sec"),alist));
 t->tm_sec = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("min"),alist));
 t->tm_min = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("hour"),alist));
 t->tm_hour = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("mday"),alist));
 t->tm_mday = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("mon"),alist));
 t->tm_mon = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("year"),alist));
 t->tm_year = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("wday"),alist));
 t->tm_wday = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("yday"),alist));
 t->tm_yday = NULLP(val) ? 0 : get_c_long(val);
 val = cdr(assq(cintern("isdst"),alist));
 t->tm_isdst = NULLP(val) ? -1 : get_c_long(val);
#if defined(__osf__)
 val = cdr(assq(cintern("gmtoff"),alist));
 t->__tm_gmtoff = NULLP(val) ? 0 : get_c_long(val);
#endif
}

LISP llocaltime(LISP value)
{time_t b;
 struct tm *t;
 if NNULLP(value)
   b = get_c_long(value);
 else
   time(&b);
 if ((t = localtime(&b)))
   return(decode_tm(t));
 else
   return(err("localtime",llast_c_errmsg(-1)));}

LISP lgmtime(LISP value)
{time_t b;
 struct tm *t;
 if NNULLP(value)
   b = get_c_long(value);
 else
   time(&b);
 if ((t = gmtime(&b)))
   return(decode_tm(t));
 else
   return(err("gmtime",llast_c_errmsg(-1)));}

#if defined(unix) || defined(WIN32)
LISP ltzset(void)
{tzset();
 return(NIL);}
#endif

LISP lmktime(LISP alist)
{struct tm tm;
 time_t t;
 encode_tm(alist,&tm);
 t = mktime(&tm);
 return(flocons(t));}

#if defined(__osf__) || defined(SUN5) || defined(linux)

LISP lstrptime(LISP str,LISP fmt,LISP in)
{struct tm tm;
 encode_tm(in,&tm);
 if (strptime(get_c_string(str),get_c_string(fmt),&tm))
   {
#if defined(SUN5)
     /* SUN software incorrectly sets this to 0, but until further
	analysis (such as by mktime) it is too early to conclude */
     tm.tm_isdst = -1;
#endif
     return(decode_tm(&tm));
   }
 else
   return(NIL);}

#endif

#ifdef unix

LISP lstrftime(LISP fmt,LISP in)
{struct tm tm;
 time_t b;
 struct tm *t;
 size_t ret;
 char buff[1024];
 if NNULLP(in)
   {encode_tm(in,&tm);
    t = &tm;}
 else
   {time(&b);
    if (!(t = gmtime(&b)))
      return(NIL);}
 if ((ret = strftime(buff,sizeof(buff),get_c_string(fmt),t)))
   return(strcons(ret,buff));
 else
   return(NIL);}

#endif

LISP lchdir(LISP dir)
{long iflag;
#ifdef unix
 FILE *f;
 int fd;
#endif
 char *path;
 switch(TYPE(dir))
   {case tc_c_file:
#ifdef unix
      f = get_c_file(dir,NULL);
      fd = fileno(f);
      iflag = no_interrupt(1);
      if (fchdir(fd))
	return(err("fchdir",llast_c_errmsg(-1)));
      no_interrupt(iflag);
#else
      err("fchdir not supported in os",NIL);
#endif
      return(NIL);
    default:
      path = get_c_string(dir);
      iflag = no_interrupt(1);
      if (chdir(path))
	return(err("chdir",llast_c_errmsg(-1)));
      no_interrupt(iflag);
      return(NIL);}}

#if defined(__osf__)
LISP rld_pathnames(void)
     /* this is a quick diagnostic to know what images we are running */
{char *path;
 LISP result = NIL;
 for(path=_rld_first_pathname();path;path=_rld_next_pathname())
   result = cons(strcons(strlen(path),path),result);
 return(nreverse(result));}
#endif

#ifdef unix
LISP lgetpass(LISP lprompt)
{long iflag;
 char *result;
 iflag = no_interrupt(1);
 result = getpass(NULLP(lprompt) ? "" : get_c_string(lprompt));
 no_interrupt(iflag);
 if (result)
   return(strcons(strlen(result),result));
 else
   return(NIL);}
#endif

#ifdef unix
LISP lpipe(void)
{int filedes[2];
 long iflag;
 LISP f1,f2;
 f1 = cons(NIL,NIL);
 f2 = cons(NIL,NIL);
 iflag = no_interrupt(1);
 if (pipe(filedes) == 0)
   {f1->type = tc_c_file;
    f1->storage_as.c_file.f = fdopen(filedes[0],"r");
    f2->type = tc_c_file;
    f2->storage_as.c_file.f = fdopen(filedes[1],"w");
    no_interrupt(iflag);
    return(listn(2,f1,f2));}
 else
   return(err("pipe",llast_c_errmsg(-1)));}
#endif

#define CTYPE_FLOAT   1
#define CTYPE_DOUBLE  2
#define CTYPE_CHAR    3
#define CTYPE_UCHAR   4
#define CTYPE_SHORT   5
#define CTYPE_USHORT  6
#define CTYPE_INT     7
#define CTYPE_UINT    8
#define CTYPE_LONG    9
#define CTYPE_ULONG  10

LISP err_large_index(LISP ind)
{return(err("index too large",ind));}

LISP datref(LISP dat,LISP ctype,LISP ind)
{char *data;
 long size,i;
 data = get_c_string_dim(dat,&size);
 i = get_c_long(ind);
 if (i < 0) err("negative index",ind);
 switch(get_c_long(ctype))
   {case CTYPE_FLOAT:
      if (((i+1) * (int) sizeof(float)) > size) err_large_index(ind);
      return(flocons(((float *)data)[i]));
    case CTYPE_DOUBLE:
      if (((i+1) * (int) sizeof(double)) > size) err_large_index(ind);
      return(flocons(((double *)data)[i]));
    case CTYPE_LONG:
      if (((i+1) * (int) sizeof(long)) > size) err_large_index(ind);
      return(flocons(((long *)data)[i]));
    case CTYPE_SHORT:
      if (((i+1) * (int) sizeof(short)) > size) err_large_index(ind);
      return(flocons(((short *)data)[i]));
    case CTYPE_CHAR:
      if (((i+1) * (int) sizeof(char)) > size) err_large_index(ind);
      return(flocons(((char *)data)[i]));
    case CTYPE_INT:
      if (((i+1) * (int) sizeof(int)) > size) err_large_index(ind);
      return(flocons(((int *)data)[i]));
    case CTYPE_ULONG:
      if (((i+1) * (int) sizeof(unsigned long)) > size) err_large_index(ind);
      return(flocons(((unsigned long *)data)[i]));
    case CTYPE_USHORT:
      if (((i+1) * (int) sizeof(unsigned short)) > size) err_large_index(ind);
      return(flocons(((unsigned short *)data)[i]));
    case CTYPE_UCHAR:
      if (((i+1) * (int) sizeof(unsigned char)) > size) err_large_index(ind);
      return(flocons(((unsigned char *)data)[i]));
    case CTYPE_UINT:
      if (((i+1) * (int) sizeof(unsigned int)) > size) err_large_index(ind);
      return(flocons(((unsigned int *)data)[i]));
    default:
      return(err("unknown CTYPE",ctype));}}

LISP sdatref(LISP spec,LISP dat)
{return(datref(dat,car(spec),cdr(spec)));}

LISP mkdatref(LISP ctype,LISP ind)
{return(closure(cons(ctype,ind),
		leval(cintern("sdatref"),NIL)));}

LISP datlength(LISP dat,LISP ctype)
{char *data;
 long size;
 data = get_c_string_dim(dat,&size);
 switch(get_c_long(ctype))
   {case CTYPE_FLOAT:
      return(flocons(size / sizeof(float)));
    case CTYPE_DOUBLE:
      return(flocons(size / sizeof(double)));
    case CTYPE_LONG:
      return(flocons(size / sizeof(long)));
    case CTYPE_SHORT:
      return(flocons(size / sizeof(short)));
    case CTYPE_CHAR:
      return(flocons(size / sizeof(char)));
    case CTYPE_INT:
      return(flocons(size / sizeof(int)));
    case CTYPE_ULONG:
      return(flocons(size / sizeof(unsigned long)));
    case CTYPE_USHORT:
      return(flocons(size / sizeof(unsigned short)));
    case CTYPE_UCHAR:
      return(flocons(size / sizeof(unsigned char)));
    case CTYPE_UINT:
      return(flocons(size / sizeof(unsigned int)));
    default:
      return(err("unknown CTYPE",ctype));}}

static LISP cgi_main(LISP result)
{if (CONSP(result) && TYPEP(car(result),tc_string))
   {put_st("Status: 500 Server Error (Application)\n");
    put_st("Content-type: text/html\n\n");
    put_st("<HTML><HEAD><TITLE>Server Error (Application)</TITLE></HEAD>\n");
    put_st("<BODY><H1>Server Error (Application)</H1>\n");
    put_st("An application on this server has encountered an error\n");
    put_st("which prevents it from fulfilling your request.");
    put_st("<P><PRE><B>Error Message:</B> ");
    lprint(car(result),NIL);
    if NNULLP(cdr(result))
      {put_st("\n");
       lprint(cdr(result),NIL);}
    put_st("</PRE></BODY></HTML>\n");
    err("cgi-main",NIL);}
 return(NIL);}


static int htqs_arg(char *value)
{char tmpbuff[1024],*p1,*p2;
 if ((strcmp(value,"(repl)") == 0) ||
     (strcmp(value,"repl") == 0))
   return(repl_driver(1,1,NULL));
 else if (!strchr(value,'('))
   {strcpy(tmpbuff,"(require \"");
    for(p1 = &tmpbuff[strlen(tmpbuff)],p2 = value;*p2;++p2)
	{if (strchr("\\\"",*p2)) *p1++ = '\\';
	 *p1++ = *p2;}
	*p1 = 0;
	strcat(tmpbuff,"\")");
    return(repl_c_string(tmpbuff,0,0,0));}
 else
   return(repl_c_string(value,0,0,0));}


int __stdcall siod_main(int argc,char **argv, char **env)
{int j,retval = 0,iargc,mainflag = 0,text_plain_flag = 0;
 char *iargv[2],*start,*end;
 LISP l;
 iargv[0] = "";
 for(iargc=0,j=1;j<argc; ++j)
   if (*(start = argv[j]) == '-')
     {while(*start)
	{if (!(end = strstr(start,",-"))) end = &start[strlen(start)];
	 iargv[1] = (char *) malloc(end-start+1);
	 memcpy(iargv[1],start,end-start);
	 iargv[1][end-start] = 0;
	 if ((strncmp(iargv[1],"-v",2) == 0) &&
	     (atol(&iargv[1][2]) > 0) &&
	     (iargv[1][2] != '0'))
	   {printf("Content-type: text/plain\r\n\r\n");
	    text_plain_flag = 1;}
	 if ((strncmp(iargv[1],"-m",2) == 0))
	   mainflag = atol(&iargv[1][2]);
	 else
	   process_cla(2,iargv,1);
	 /* Note: Not doing free(iargv[1]); */
	 start = (*end) ? end+1 : end;}}
 else
   ++iargc;
 print_welcome();
 print_hs_1();
 init_storage();
 for(l=NIL,j=0;j<argc;++j)
   l = cons(strcons(strlen(argv[j]),argv[j]),l);
 setvar(cintern("*args*"),nreverse(l),NIL);
 l = NIL;
 for(l=NIL,j=0;env && env[j];++j)
   l = cons(strcons(strlen(env[j]),env[j]),l);
 setvar(cintern("*env*"),nreverse(l),NIL);
 l = NIL;
 init_subrs();
 init_trace();
 init_slibu();
 init_subr_1("__cgi-main",cgi_main);
 if (iargc == 0)
   retval = repl_driver(1,1,NULL);
 else
   {for(j=1;j<(((mainflag >= 2) && (argc > 3)) ? 3 : argc);++j)
      if (argv[j][0] != '-')
	{retval = htqs_arg(argv[j]);
	 if (retval != 0) break;}
    if (mainflag)
      retval = htqs_arg(((mainflag > 2) && !text_plain_flag)
			? "(__cgi-main (*catch 'errobj (main))))"
			: "(main)");}
 if (siod_verbose_check(2))
   printf("EXIT\n");
#ifdef VMS
 if (retval == 0) retval = 1;
#endif
 return(retval);}

long position_script(FILE *f,char *buff,size_t bufflen)
/* This recognizes #!/ sequence. Exersize: compute the probability
   of the sequence showing up in a file of N random bytes. */
{int c,s = 0;
 long pos = -1,offset;
 size_t j;
 buff[0] = 0;
 for(offset=0;offset<250000;++offset)
  {c = getc(f);
   switch(c) 
    {case EOF: 
	  return(-1);
     case '#':
      s = '#';
      pos = offset;
      break;
	 case '!':
      s = (s == '#') ? '!' : 0;
      break;
     case '/':
      if (s == '!')
       {while((c = getc(f)) != EOF) if (c == ' ') break;  
        for(j=0;((c = getc(f)) != '\n') && (c != EOF) && (j+1 <= bufflen);++j)
         {buff[j] = c; buff[j+1] = 0;}
        if (strspn(buff," \t\r") == strlen(buff)) buff[0] = 0;
        return(pos);}
      s = 0;
      break;
     default:
      s = 0;
      break;}}
return(-1);}

#ifdef WIN32
char *find_exe_self(char *cmd)
 /* This is for the benefit of WINDOWS NT, which is in fact
    unix compatible in what it passes in as argv[0]. There
    are other ways of getting a handle to the current executable. */
{DWORD retsize;
 char exe_self[512];
 retsize = SearchPath(NULL,cmd,".EXE",sizeof(exe_self),exe_self,NULL);
 if (retsize > 0)
  return(strdup(exe_self));
 else
  return(cmd);}
#endif
  
void __stdcall siod_shuffle_args(int *pargc,char ***pargv)
 /* shuffle arguments in the same way that the unix exec loader
    would do for a #!/xxx script execution. */
{FILE *f;
 char flagbuff[100],**argv,**nargv,offbuff[10];
 long pos;
 int argc,nargc,j,k;
 argc = *pargc;
 argv = *pargv;
#ifdef WIN32
 argv[0] = find_exe_self(argv[0]);
 process_cla(1,argv,1);
#endif
 if (!(f = fopen(argv[0],"rb")))
  {/* perror(argv[0]); */
   return;}
 pos = position_script(f,flagbuff,sizeof(flagbuff));
 fclose(f);
 if (pos < 0) return;
 nargc = argc + ((*flagbuff) ? 2 : 1);
 nargv = (char **) malloc(sizeof(char *) * nargc);
 j = 0;
 nargv[j++] = "siod.exe";
 if (*flagbuff) nargv[j++] = strdup(flagbuff);
 sprintf(offbuff,"%ld",pos);
 nargv[j] = (char *) malloc(strlen(offbuff)+strlen(argv[0])+2);
 sprintf(nargv[j],"%s%c%s",offbuff,VLOAD_OFFSET_HACK_CHAR,argv[0]);
 j++;
 for(k=1;k<argc;++k) nargv[j++] = argv[k];
 *pargc = nargc;
 *pargv = nargv;
 }

LISP lposition_script(LISP lfile)
{FILE *f;
 long iflag,pos;
 char flbuff[100];
 f = get_c_file(lfile,stdin);
 iflag = no_interrupt(1);
 pos = position_script(f,flbuff,sizeof(flbuff));
 no_interrupt(iflag);
 if (pos < 0) return(NIL);
 return(cons(flocons(pos),strcons(-1,flbuff)));}

void __stdcall siod_init(int argc,char **argv)
{process_cla(argc,argv,0);
 init_storage();
 init_subrs();
 init_trace();
 init_slibu();}
 
void __stdcall init_slibu(void)
{long j;
#if defined(unix)
 char *tmp1,*tmp2;
#endif
#if defined(unix) || defined(WIN32)
 tc_opendir = allocate_user_tc();
 set_gc_hooks(tc_opendir,
	      NULL,
	      NULL,
	      NULL,
	      opendir_gc_free,
	      &j);
 set_print_hooks(tc_opendir,opendir_prin1);
 init_subr_2("chmod",l_chmod);
#endif

 gc_protect_sym(&sym_channels,"*channels*");
 setvar(sym_channels,NIL,NIL);
#ifdef WIN32
 init_subr_0("win32-debug",win32_debug);
#endif
#ifdef VMS
 init_subr_1("vms-debug",vms_debug);
 init_lsubr("sys$crembx",lcrembx);
 init_subr_4("lib$set_logical",lset_logical);
#endif
 init_lsubr("system",lsystem);
#ifndef WIN32
 init_subr_0("getgid",lgetgid);
 init_subr_0("getuid",lgetuid);
#endif
#if defined(unix) || defined(WIN32)
 init_subr_0("getcwd",lgetcwd);
#endif
#ifdef unix
 init_subr_1("getpwuid",lgetpwuid);
 init_subr_1("getpwnam",lgetpwnam);
 init_subr_0("getpwent",lgetpwent);
 init_subr_0("setpwent",lsetpwent);
 init_subr_0("endpwent",lendpwent);
 init_subr_1("setuid",lsetuid);
 init_subr_1("seteuid",lseteuid);
 init_subr_0("geteuid",lgeteuid);
#if defined(__osf__)
 init_subr_1("setpwfile",lsetpwfile);
#endif
 init_subr_2("access-problem?",laccess_problem);
 init_subr_3("utime",lutime);
 init_subr_2("fchmod",lfchmod);
#endif
 init_subr_1("random",lrandom);
 init_subr_1("srandom",lsrandom);
 init_subr_1("first",car);
 init_subr_1("rest",cdr);
#ifdef unix
 init_subr_0("fork",lfork);
 init_subr_3("exec",lexec);
 init_subr_1("nice",lnice);
 init_subr_2("wait",lwait);
 init_subr_0("getpgrp",lgetpgrp);
 init_subr_1("getgrgid",lgetgrgid);
 init_subr_2("setpgid",lsetpgid);
 init_subr_2("kill",lkill);
#endif
 init_subr_1("%%%memref",lmemref_byte);
 init_subr_0("getpid",lgetpid);
#ifndef WIN32
 init_subr_0("getppid",lgetppid);
#endif
 init_subr_1("exit",lexit);
 init_subr_1("trunc",ltrunc);
#ifdef unix
 init_subr_1("putenv",lputenv);
#endif
#if defined(__osf__) || defined(sun)
 init_subr_2("cpu-usage-limits",cpu_usage_limits);
#endif
#if defined(__osf__) || defined(SUN5)
 init_subr_1("current-resource-usage",current_resource_usage);
#endif
#if  defined(unix) || defined(WIN32)
 init_subr_1("opendir",l_opendir);
 init_subr_1("closedir",l_closedir);
 init_subr_1("readdir",l_readdir);
#endif
 init_subr_1("delete-file",delete_file);
 init_subr_1("file-times",file_times);
 init_subr_1("unix-time->strtime",utime2str);
 init_subr_0("unix-time",unix_time);
 init_subr_1("unix-ctime",unix_ctime);
 init_subr_1("getenv",lgetenv);
 init_subr_1("sleep",lsleep);
 init_subr_1("url-encode",url_encode);
 init_subr_1("url-decode",url_decode);
 init_subr_2("gets",lgets);
 init_subr_1("readline",readline);
 init_subr_1("html-encode",html_encode);
 init_subr_1("html-decode",html_decode);
#if defined(unix) || defined(WIN32)
 init_subr_1("decode-file-mode",decode_st_mode);
 init_subr_1("encode-file-mode",encode_st_mode);
 init_subr_1("stat",l_stat);
 init_subr_1("fstat",l_fstat);
#endif
#ifdef unix
 init_subr_1("encode-open-flags",encode_open_flags);
 init_subr_1("lstat",l_lstat);
#endif
#if defined(__osf__) || defined(SUN5)
 init_subr_3("fnmatch",l_fnmatch);
#endif
#ifdef unix
 init_subr_2("symlink",lsymlink);
 init_subr_2("link",llink);
 init_subr_1("unlink",lunlink);
 init_subr_1("rmdir",lrmdir);
 init_subr_2("mkdir",lmkdir);
 init_subr_2("rename",lrename);
 init_subr_1("readlink",lreadlink);
#endif
#ifndef WIN32
 init_subr_3("chown",l_chown);
#endif
 init_subr_1("http-date",http_date);
#if defined(__osf__)
 init_subr_1("http-date-parse",http_date_parse);
#endif
#ifdef unix
 init_subr_2("popen",popen_l);
 init_subr_1("pclose",pclose_l);
#endif
 init_subr_2("load-so",load_so);
 init_subr_1("require-so",require_so);
 init_subr_1("so-ext",so_ext);
#ifdef unix
 setvar(cintern("SEEK_SET"),flocons(SEEK_SET),NIL);
 setvar(cintern("SEEK_CUR"),flocons(SEEK_CUR),NIL);
 setvar(cintern("SEEK_END"),flocons(SEEK_END),NIL);
 setvar(cintern("F_RDLCK"),flocons(F_RDLCK),NIL);
 setvar(cintern("F_WRLCK"),flocons(F_WRLCK),NIL);
 setvar(cintern("F_UNLCK"),flocons(F_UNLCK),NIL);
 init_subr_5("F_SETLK",lF_SETLK);
 init_subr_5("F_SETLKW",lF_SETLKW);
 init_subr_5("F_GETLK",lF_GETLK);

#endif
 init_subr_0("siod-lib",siod_lib_l);

#ifdef unix
 if ((!(tmp1 = getenv(ld_library_path_env))) ||
     (!strstr(tmp1,siod_lib)))
   {tmp2 = (char *) must_malloc(strlen(ld_library_path_env) + 1 +
				((tmp1) ? strlen(tmp1) + 1 : 0) +
				strlen(siod_lib) + 1);
    sprintf(tmp2,"%s=%s%s%s",
	    ld_library_path_env,
	    (tmp1) ? tmp1 : "",
	    (tmp1) ? ":" : "",
	    siod_lib);
    /* note that we cannot free the string afterwards. */
    putenv(tmp2);}
#endif
#ifdef vms
 setvar(cintern("*require-so-dir*"),
	string_append(listn(2,
			    strcons(-1,siod_lib),
			    strcons(-1,".EXE"))),
	NIL);
#endif
 init_subr_1("localtime",llocaltime);
 init_subr_1("gmtime",lgmtime);
#if defined(unix) || defined(WIN32)
 init_subr_0("tzset",ltzset);
#endif
 init_subr_1("mktime",lmktime);
 init_subr_1("chdir",lchdir);
#if defined(__osf__)
 init_subr_0("rld-pathnames",rld_pathnames);
#endif
#if defined(__osf__) || defined(SUN5) || defined(linux)
 init_subr_3("strptime",lstrptime);
#endif
#ifdef unix
 init_subr_2("strftime",lstrftime);
 init_subr_1("getpass",lgetpass);
 init_subr_0("pipe",lpipe);
 init_subr_2("alarm",lalarm);
#endif

 setvar(cintern("CTYPE_FLOAT"),flocons(CTYPE_FLOAT),NIL);
 setvar(cintern("CTYPE_DOUBLE"),flocons(CTYPE_DOUBLE),NIL);
 setvar(cintern("CTYPE_LONG"),flocons(CTYPE_LONG),NIL);
 setvar(cintern("CTYPE_SHORT"),flocons(CTYPE_SHORT),NIL);
 setvar(cintern("CTYPE_CHAR"),flocons(CTYPE_CHAR),NIL);
 setvar(cintern("CTYPE_INT"),flocons(CTYPE_INT),NIL);
 setvar(cintern("CTYPE_ULONG"),flocons(CTYPE_ULONG),NIL);
 setvar(cintern("CTYPE_USHORT"),flocons(CTYPE_USHORT),NIL);
 setvar(cintern("CTYPE_UCHAR"),flocons(CTYPE_UCHAR),NIL);
 setvar(cintern("CTYPE_UINT"),flocons(CTYPE_UINT),NIL);
 init_subr_3("datref",datref);
 init_subr_2("sdatref",sdatref);
 init_subr_2("mkdatref",mkdatref);
 init_subr_2("datlength",datlength);
 init_subr_1("position-script",lposition_script);

 init_slibu_version();}