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- /* $Header: /home/hyperion/mu/christos/src/sys/tcsh-6.01/RCS/tc.os.c,v 3.13 1991/12/19 22:34:14 christos Exp $ */
- /*
- * tc.os.c: OS Dependent builtin functions
- */
- /*-
- * Copyright (c) 1980, 1991 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include "sh.h"
-
- RCSID("$Id: tc.os.c,v 3.13 1991/12/19 22:34:14 christos Exp $")
-
- #include "tw.h"
- #include "ed.h"
- #include "ed.defns.h" /* for the function names */
-
- #ifdef titan
- int end;
- #endif /* titan */
-
- /***
- *** MACH
- ***/
-
- #ifdef MACH
- /* dosetpath -- setpath built-in command
- *
- **********************************************************************
- * HISTORY
- * 08-May-88 Richard Draves (rpd) at Carnegie-Mellon University
- * Major changes to remove artificial limits on sizes and numbers
- * of paths.
- *
- **********************************************************************
- */
-
- #ifdef MACH
- static Char STRCPATH[] = {'C', 'P', 'A', 'T', 'H', '\0'};
- static Char STRLPATH[] = {'L', 'P', 'A', 'T', 'H', '\0'};
- static Char STRMPATH[] = {'M', 'P', 'A', 'T', 'H', '\0'};
- static Char STREPATH[] = {'E', 'P', 'A', 'T', 'H', '\0'};
- #endif /* MACH */
-
- static Char *syspaths[] = {STRPATH, STRCPATH, STRLPATH, STRMPATH, STREPATH, 0};
- #define LOCALSYSPATH "/usr/cs"
-
- /*ARGSUSED*/
- void
- dosetpath(arglist, c)
- Char **arglist;
- struct command *c;
- {
- extern char *getenv();
- sigmask_t omask;
- Char **pathvars, **cmdargs;
- Char **paths;
- char **spaths, **cpaths, **cmds;
- char *tcp;
- unsigned int npaths, ncmds;
- int i, sysflag;
-
- omask = sigsetmask(sigmask(SIGINT));
-
- /*
- * setpath(3) uses stdio and we want 0, 1, 2 to work...
- */
- if (!didfds) {
- (void) dcopy(SHIN, 0);
- (void) dcopy(SHOUT, 1);
- (void) dcopy(SHDIAG, 2);
- didfds = 1;
- }
-
- for (i = 1; arglist[i] && (arglist[i][0] != '-'); i++);
- npaths = i - 1;
-
- cmdargs = &arglist[i];
- for (; arglist[i]; i++);
- ncmds = i - npaths - 1;
-
- if (npaths) {
- sysflag = 0;
- pathvars = &arglist[1];
- }
- else {
- sysflag = 1;
- npaths = (sizeof syspaths / sizeof *syspaths) - 1;
- pathvars = syspaths;
- }
-
- /* note that npaths != 0 */
-
- spaths = (char **) xmalloc(npaths * sizeof *spaths);
- setzero((char *) spaths, npaths * sizeof *spaths);
- paths = (Char **) xmalloc((npaths + 1) * sizeof *paths);
- setzero((char *) paths, (npaths + 1) * sizeof *paths);
- cpaths = (char **) xmalloc((npaths + 1) * sizeof *cpaths);
- setzero((char *) cpaths, (npaths + 1) * sizeof *cpaths);
- cmds = (char **) xmalloc((ncmds + 1) * sizeof *cmds);
- setzero((char *) cmds, (ncmds + 1) * sizeof *cmds);
- for (i = 0; i < npaths; i++) {
- char *val = getenv(short2str(pathvars[i]));
-
- if (val == NULL)
- val = "";
-
- spaths[i] = xmalloc((Strlen(pathvars[i]) + strlen(val)
- + 2) * sizeof **spaths);
- (void) strcpy(spaths[i], short2str(pathvars[i]));
- (void) strcat(spaths[i], "=");
- (void) strcat(spaths[i], val);
- cpaths[i] = spaths[i];
- }
-
- for (i = 0; i < ncmds; i++) {
- Char *val = globone(cmdargs[i], G_ERROR);
-
- if (val == NULL)
- goto abortpath;
- cmds[i] = xmalloc(Strlen(val) + 1);
- (void) strcpy(cmds[i], short2str(val));
- }
-
-
- if (setpath(cpaths, cmds, LOCALSYSPATH, sysflag, 1) < 0) {
- abortpath:
- if (spaths) {
- for (i = 0; i < npaths; i++)
- if (spaths[i])
- xfree((ptr_t) spaths[i]);
- xfree((ptr_t) spaths);
- }
- if (paths) {
- for (i = 0; i < npaths; i++)
- if (paths[i])
- xfree((ptr_t) paths[i]);
- xfree((ptr_t) paths);
- }
- if (cpaths)
- xfree((ptr_t) cpaths);
- if (cmds) {
- for (i = 0; i < ncmds; i++)
- if (cmds[i])
- xfree((ptr_t) cmds[i]);
- xfree((ptr_t) cmds);
- }
-
- for (i = 0; i < npaths; i++) {
- paths[i] = SAVE(cpaths[i]);
- xfree((ptr_t) cpaths[i]);
- }
- (void) sigsetmask(omask);
- donefds();
- return;
- }
-
- for (i = 0; i < npaths; i++) {
- Char *val;
-
- for (val = paths[i]; val && *val && *val != '='; val++);
- if (val && *val == '=') {
- *val++ = '\0';
- setenv(paths[i], val);
- if (Strcmp(paths[i], STRPATH) == 0) {
- importpath(val);
- if (havhash)
- dohash(NULL, NULL);
- }
- *--val = '=';
- }
- }
- (void) sigsetmask(omask);
- donefds();
- }
- #endif /* MACH */
-
- /***
- *** AIX
- ***/
- #ifdef TCF
- /* ARGSUSED */
- void
- dogetxvers(v, c)
- Char **v;
- struct command *c;
- {
- char xvers[MAXPATHLEN];
-
- if (getxvers(xvers, MAXPATHLEN) == -1)
- stderror(ERR_SYSTEM, "getxvers", strerror(errno));
- xprintf("%s\n", xvers);
- flush();
- }
-
- /*ARGSUSED*/
- void
- dosetxvers(v, c)
- Char **v;
- struct command *c;
- {
- char *xvers;
-
- ++v;
- if (!*v || *v[0] == '\0')
- xvers = "";
- else
- xvers = short2str(*v);
- if (setxvers(xvers) == -1)
- stderror(ERR_SYSTEM, "setxvers", strerror(errno));
- }
-
- #include <sf.h>
- #ifdef _AIXPS2
- # define XC_PDP11 0x01
- # define XC_23 0x02
- # define XC_Z8K 0x03
- # define XC_8086 0x04
- # define XC_68K 0x05
- # define XC_Z80 0x06
- # define XC_VAX 0x07
- # define XC_16032 0x08
- # define XC_286 0x09
- # define XC_386 0x0a
- # define XC_S370 0x0b
- #else
- # include <sys/x.out.h>
- #endif /* _AIXPS2 */
-
- static struct xc_cpu_t {
- short xc_id;
- char *xc_name;
- } xcpu[] =
- {
- { XC_PDP11, "pdp11" },
- { XC_23, "i370" },
- { XC_Z8K, "z8000" },
- { XC_8086, "i86" },
- { XC_68K, "mc68000" },
- { XC_Z80, "x80" },
- { XC_VAX, "vax" },
- { XC_16032, "ns16032" },
- { XC_286, "i286" },
- { XC_386, "i386" },
- { XC_S370, "xa370" },
- { 0, NULL }
- };
-
- /*
- * our local hack table, stolen from x.out.h
- */
- static char *
- getxcode(xcid)
- short xcid;
- {
- int i;
-
- for (i = 0; xcpu[i].xc_name != NULL; i++)
- if (xcpu[i].xc_id == xcid)
- return (xcpu[i].xc_name);
- return (NULL);
- }
-
- static short
- getxid(xcname)
- char *xcname;
- {
- int i;
-
- for (i = 0; xcpu[i].xc_name != NULL; i++)
- if (strcmp(xcpu[i].xc_name, xcname) == 0)
- return (xcpu[i].xc_id);
- return ((short) -1);
- }
-
-
- /*ARGSUSED*/
- void
- dogetspath(v, c)
- Char **v;
- struct command *c;
- {
- int i, j;
- sitepath_t p[MAXSITE];
- struct sf *st;
- static char *local = "LOCAL ";
-
- if ((j = getspath(p, MAXSITE)) == -1)
- stderror(ERR_SYSTEM, "getspath", strerror(errno));
- for (i = 0; i < j && (p[i] & SPATH_CPU) != NOSITE; i++) {
- if (p[i] & SPATH_CPU) {
- if ((p[i] & SPATH_MASK) == NULLSITE)
- xprintf(local);
- else if ((st = sfxcode((short) (p[i] & SPATH_MASK))) != NULL)
- xprintf("%s ", st->sf_ctype);
- else {
- char *xc = getxcode(p[i] & SPATH_MASK);
-
- if (xc != NULL)
- xprintf("%s ", xc);
- else
- xprintf("*cpu %d* ", (int) (p[i] & SPATH_MASK));
- /*
- * BUG in the aix code... needs that cause if
- * sfxcode fails once it fails for ever
- */
- endsf();
- }
- }
- else {
- if (p[i] == NULLSITE)
- xprintf(local);
- else if ((st = sfnum(p[i])) != NULL)
- xprintf("%s ", st->sf_sname);
- else
- xprintf("*site %d* ", (int) (p[i] & SPATH_MASK));
- }
- }
- xprintf("\n");
- flush();
- }
-
- /*ARGSUSED*/
- void
- dosetspath(v, c)
- Char **v;
- struct command *c;
- {
- int i;
- short j;
- char *s;
- sitepath_t p[MAXSITE];
- struct sf *st;
-
- for (i = 0, v++; *v && *v[0] != '\0'; v++, i++) {
- s = short2str(*v);
- if (Isdigit(*s))
- p[i] = atoi(s);
- else if (strcmp(s, "LOCAL") == 0)
- p[i] = NULLSITE;
- else if ((st = sfctype(s)) != NULL)
- p[i] = SPATH_CPU | st->sf_ccode;
- else if ((j = getxid(s)) != -1)
- p[i] = SPATH_CPU | j;
- else if ((st = sfname(s)) != NULL)
- p[i] = st->sf_id;
- else {
- setname(s);
- stderror(ERR_NAME | ERR_STRING, "Bad cpu/site name");
- }
- if (i == MAXSITE - 1)
- stderror(ERR_NAME | ERR_STRING, "Site path too long");
- }
- if (setspath(p, i) == -1)
- stderror(ERR_SYSTEM, "setspath", strerror(errno));
- }
-
- /* sitename():
- * Return the site name where the process is running
- */
- char *
- sitename(pid)
- pid_t pid;
- {
- siteno_t ss;
- struct sf *st;
-
- if ((ss = site(pid)) == -1 || (st = sfnum(ss)) == NULL)
- return ("unknown");
- else
- return (st->sf_sname);
- }
-
- static int
- migratepid(pid, new_site)
- pid_t pid;
- siteno_t new_site;
- {
- struct sf *st;
- int need_local;
-
- need_local = (pid == 0) || (pid == getpid());
-
- if (kill3((pid_t) pid, SIGMIGRATE, new_site) < 0) {
- xprintf("%d: %s\n", pid, strerror(errno));
- return (-1);
- }
-
- if (need_local) {
- if ((new_site = site(0)) == -1) {
- xprintf("site: %s\n", strerror(errno));
- return (-1);
- }
- if ((st = sfnum(new_site)) == NULL) {
- xprintf("%d: Site not found\n", new_site);
- return (-1);
- }
- if (setlocal(st->sf_local, strlen(st->sf_local)) == -1) {
- xprintf("setlocal: %s: %s\n", st->sf_local, strerror(errno));
- return (-1);
- }
- }
- return (0);
- }
-
- /*ARGSUSED*/
- void
- domigrate(v, c)
- Char **v;
- struct command *c;
- {
- struct sf *st;
- char *s;
- Char *cp;
- struct process *pp;
- int pid, err1 = 0;
- siteno_t new_site = 0;
- sigmask_t omask;
-
- #ifdef BSDSIGS
- omask = sigmask(SIGCHLD);
- if (setintr)
- omask |= sigmask(SIGINT);
- omask = sigblock(omask) & ~omask;
- #else
- if (setintr)
- (void) sighold(SIGINT);
- (void) sighold(SIGCHLD);
- #endif /* BSDSIGS */
-
- ++v;
- if (*v[0] == '-') {
- /*
- * Do the -site.
- */
- s = short2str(&v[0][1]);
- if ((st = sfname(s)) == NULL) {
- setname(s);
- stderror(ERR_NAME | ERR_STRING, "Site not found");
- }
- new_site = st->sf_id;
- ++v;
- }
-
- if (!*v || *v[0] == '\0') {
- if (migratepid(0, new_site) == -1)
- err1++;
- }
- else {
- gflag = 0, tglob(v);
- if (gflag) {
- v = globall(v);
- if (v == 0)
- stderror(ERR_NAME | ERR_NOMATCH);
- }
- else {
- v = gargv = saveblk(v);
- trim(v);
- }
-
- while (v && (cp = *v)) {
- if (*cp == '%') {
- pp = pfind(cp);
- if (kill3((pid_t) - pp->p_jobid, SIGMIGRATE, new_site) < 0) {
- xprintf("%s: %s\n", short2str(cp), strerror(errno));
- err1++;
- }
- }
- else if (!(Isdigit(*cp) || *cp == '-'))
- stderror(ERR_NAME | ERR_JOBARGS);
- else {
- pid = atoi(short2str(cp));
- if (migratepid(pid, new_site) == -1)
- err1++;
- }
- v++;
- }
- if (gargv)
- blkfree(gargv), gargv = 0;
- }
-
- done:
- #ifdef BSDSIGS
- (void) sigsetmask(omask);
- #else
- (void) sigrelse(SIGCHLD);
- if (setintr)
- (void) sigrelse(SIGINT);
- #endif /* BSDSIGS */
- if (err1)
- stderror(ERR_SILENT);
- }
-
- #endif /* TCF */
-
- /***
- *** CONVEX Warps.
- ***/
-
- #ifdef WARP
- /*
- * handle the funky warping of symlinks
- */
- #include <warpdb.h>
- #include <sys/warp.h>
-
- static jmp_buf sigsys_buf;
-
- static sigret_t
- catch_sigsys()
- {
- longjmp(sigsys_buf, 1);
- }
-
-
- /*ARGSUSED*/
- void
- dowarp(v, c)
- Char **v;
- struct command *c;
- {
- int warp, oldwarp;
- struct warpent *we;
- void (*old_sigsys_handler) () = 0;
- char *newwarp;
-
- if (setjmp(sigsys_buf)) {
- signal(SIGSYS, old_sigsys_handler);
- stderror(ERR_NAME | ERR_STRING,
- "You're trapped in a universe you never made");
- return;
- }
- old_sigsys_handler = signal(SIGSYS, catch_sigsys);
-
- warp = getwarp();
-
- v++;
- if (*v == 0) { /* display warp value */
- if (warp < 0)
- stderror(ERR_NAME | ERR_STRING, "Getwarp failed");
- we = getwarpbyvalue(warp);
- if (we)
- printf("%s\n", we->w_name);
- else
- printf("%d\n", warp);
- }
- else { /* set warp value */
- oldwarp = warp;
- newwarp = short2str(*v);
- if (Isdigit(*v[0]))
- warp = atoi(newwarp);
- else {
- we = getwarpbyname(newwarp);
- if (we)
- warp = we->w_value;
- else
- warp = -1;
- }
- if ((warp < 0) || (warp >= WARP_MAXLINK))
- stderror(ERR_NAME | ERR_STRING, "Invalid warp");
- if ((setwarp(warp) < 0) || (getwarp() != warp)) {
- (void) setwarp(oldwarp);
- stderror(ERR_NAME | ERR_STRING, "Setwarp failed");
- }
- }
- signal(SIGSYS, old_sigsys_handler);
- return;
- }
- #endif /* WARP */
-
- /***
- *** Masscomp
- ***/
- /* Added, DAS DEC-90. */
- #ifdef masscomp
- /*ARGSUSED*/
- void
- douniverse(v, c)
- register Char **v;
- struct command *c;
- {
- register Char *cp = v[1];
- char ubuf[100];
-
- if (cp == 0) {
- (void) getuniverse(ubuf);
- xprintf("%s\n", ubuf);
- }
- else if (*cp == '\0' || setuniverse(short2str(cp)) != 0)
- stderror(ERR_NAME | ERR_STRING, "Illegal universe");
- }
- #endif /* masscomp */
-
-
- #ifdef _SEQUENT_
- /*
- * Compute the difference in process stats.
- */
- void
- pr_stat_sub(p2, p1, pr)
- struct process_stats *p2, *p1, *pr;
- {
- pr->ps_utime.tv_sec = p2->ps_utime.tv_sec - p1->ps_utime.tv_sec;
- pr->ps_utime.tv_usec = p2->ps_utime.tv_usec - p1->ps_utime.tv_usec;
- if (pr->ps_utime.tv_usec < 0) {
- pr->ps_utime.tv_sec -= 1;
- pr->ps_utime.tv_usec += 1000000;
- }
- pr->ps_stime.tv_sec = p2->ps_stime.tv_sec - p1->ps_stime.tv_sec;
- pr->ps_stime.tv_usec = p2->ps_stime.tv_usec - p1->ps_stime.tv_usec;
- if (pr->ps_stime.tv_usec < 0) {
- pr->ps_stime.tv_sec -= 1;
- pr->ps_stime.tv_usec += 1000000;
- }
-
- pr->ps_maxrss = p2->ps_maxrss - p1->ps_maxrss;
- pr->ps_pagein = p2->ps_pagein - p1->ps_pagein;
- pr->ps_reclaim = p2->ps_reclaim - p1->ps_reclaim;
- pr->ps_zerofill = p2->ps_zerofill - p1->ps_zerofill;
- pr->ps_pffincr = p2->ps_pffincr - p1->ps_pffincr;
- pr->ps_pffdecr = p2->ps_pffdecr - p1->ps_pffdecr;
- pr->ps_swap = p2->ps_swap - p1->ps_swap;
- pr->ps_syscall = p2->ps_syscall - p1->ps_syscall;
- pr->ps_volcsw = p2->ps_volcsw - p1->ps_volcsw;
- pr->ps_involcsw = p2->ps_involcsw - p1->ps_involcsw;
- pr->ps_signal = p2->ps_signal - p1->ps_signal;
- pr->ps_lread = p2->ps_lread - p1->ps_lread;
- pr->ps_lwrite = p2->ps_lwrite - p1->ps_lwrite;
- pr->ps_bread = p2->ps_bread - p1->ps_bread;
- pr->ps_bwrite = p2->ps_bwrite - p1->ps_bwrite;
- pr->ps_phread = p2->ps_phread - p1->ps_phread;
- pr->ps_phwrite = p2->ps_phwrite - p1->ps_phwrite;
- }
-
- #endif /* _SEQUENT_ */
-
-
- #ifdef tcgetpgrp
- int
- xtcgetpgrp(fd)
- int fd;
- {
- int pgrp;
-
- /* ioctl will handle setting errno correctly. */
- if (ioctl(fd, TIOCGPGRP, (ioctl_t) & pgrp) < 0)
- return (-1);
- return (pgrp);
- }
-
- /*
- * XXX: tcsetpgrp is not a macro any more cause on some systems,
- * pid_t is a short, but the ioctl() takes a pointer to int (pyr)
- * Thanks to Simon Day (simon@pharaoh.cyborg.bt.co.uk) for pointing
- * this out.
- */
- int
- xtcsetpgrp(fd, pgrp)
- int fd, pgrp;
- {
- return ioctl(fd, TIOCSPGRP, (ioctl_t) &pgrp);
- }
-
- #endif /* tcgetpgrp */
-
-
- #ifdef YPBUGS
- void
- fix_yp_bugs()
- {
- char *mydomain;
-
- /*
- * PWP: The previous version assumed that yp domain was the same as the
- * internet name domain. This isn't allways true. (Thanks to Mat Landau
- * <mlandau@bbn.com> for the original version of this.)
- */
- if (yp_get_default_domain(&mydomain) == 0) { /* if we got a name */
- extern void yp_unbind();
-
- yp_unbind(mydomain);
- }
- }
-
- #endif /* YPBUGS */
-
-
- void
- osinit()
- {
- extern ptr_t membot;
-
- membot = (ptr_t) sbrk(0);
-
- #ifdef OREO
- set42sig();
- sigignore(SIGIO); /* ignore SIGIO */
- #endif /* OREO */
-
- #ifdef aiws
- {
- struct sigstack inst;
- inst.ss_sp = xmalloc(4192) + 4192;
- inst.ss_onstack = 0;
- sigstack(&inst, NULL);
- }
- #endif /* aiws */
-
- #ifdef titan
- end = sbrk(0);
- #endif /* titan */
-
- #ifdef apollo
- (void) isapad();
- #endif
- }
-
- #ifdef strerror
- char *
- xstrerror(i)
- int i;
- {
- static char errbuf[40]; /* 64 bit num */
-
- if (i >= 0 && i < sys_nerr)
- return sys_errlist[i];
- else {
- xsprintf(errbuf, "Unknown Error: %d", i);
- return errbuf;
- }
- }
- #endif /* strerror */
-
- #ifdef gethostname
- #include <sys/utsname.h>
-
- int
- xgethostname(name, namlen)
- char *name;
- int namlen;
- {
- int i, retval;
- struct utsname uts;
-
- retval = uname(&uts);
-
- #ifdef DEBUG
- xprintf("sysname: %s\n", uts.sysname);
- xprintf("nodename: %s\n", uts.nodename);
- xprintf("release: %s\n", uts.release);
- xprintf("version: %s\n", uts.version);
- xprintf("machine: %s\n", uts.machine);
- #endif /* DEBUG */
- i = strlen(uts.nodename) + 1;
- (void) strncpy(name, uts.nodename, i < namlen ? i : namlen);
-
- return retval;
- } /* end gethostname */
-
- #endif /* gethostname */
-
-
- #ifdef getwd
- static char *strrcpy __P((char *, char *));
-
- /* xgetwd():
- * Return the pathname of the current directory, or return
- * an error message in pathname.
- */
-
- # ifdef hp9000s500
- /*
- * From: Bernd Mohr <mohr@faui77.informatik.uni-erlangen.de>
- * I also ported the tcsh to the HP9000 Series 500. This computer
- * is a little bit different than the other HP 9000 computer. It has
- * a HP Chip instead of a Motorola CPU and it is no "real" UNIX. It runs
- * HP-UX which is emulated in top of a HP operating system. So, the last
- * supported version of HP-UX is 5.2 on the HP9000s500. This has two
- * consequences: it supports no job control and it has a filesystem
- * without "." and ".." !!!
- */
- static int pathsize; /* pathname length */
-
- char *
- xgetwd(pathname)
- char *pathname;
- {
- char pathbuf[MAXNAMLEN]; /* temporary pathname buffer */
- char *pnptr = &pathbuf[(sizeof pathbuf)-1]; /* pathname pointer */
- char *prepend(); /* prepend dirname to pathname */
- dev_t rdev; /* root device number */
- DIR *dirp; /* directory stream */
- ino_t rino; /* root inode number */
- off_t rsize; /* root size */
- struct direct *dir; /* directory entry struct */
- struct stat d ,dd; /* file status struct */
-
- pathsize = 0;
- *pnptr = '\0';
- stat("/.", &d);
- rdev = d.st_dev;
- rino = d.st_ino;
- rsize = d.st_size;
- for (;;) {
- stat(".", &d);
- if (d.st_ino == rino && d.st_dev == rdev && d.st_size == rsize)
- break; /* reached root directory */
- if ((dirp = opendir("..")) == NULL) {
- (void) xsprintf(pathname,
- "getwd: Cannot open \"..\" (%s)", strerror(errno));
- goto fail;
- }
- if (chdir("..") < 0) {
- (void) xsprintf(pathname,
- "getwd: Cannot chdir to \"..\" (%s)", strerror(errno));
- goto fail;
- }
- do {
- if((dir = readdir(dirp)) == NULL) {
- closedir(dirp);
- (void) xsprintf(pathname,
- "getwd: Read error in \"..\" (%s)",
- strerror(errno));
- goto fail;
- }
- stat(dir->d_name, &dd);
- } while (dd.st_ino != d.st_ino ||
- dd.st_dev != d.st_dev ||
- dd.st_size != d.st_size
- );
- closedir(dirp);
- pnptr = prepend("/", prepend(dir->d_name, pnptr));
- }
-
- if (*pnptr == '\0') /* current dir == root dir */
- strcpy(pathname, "/");
- else {
- strcpy(pathname, pnptr);
- if (chdir(pnptr) < 0) {
- (void) xsprintf(pathname,
- "getwd: Cannot change back to \".\" (%s)",
- strerror(errno));
- return (NULL);
- }
- }
- return (pathname);
-
- fail:
- chdir(prepend(".", pnptr));
- return (NULL);
- }
-
- /* prepend():
- * tacks a directory name onto the front of a pathname.
- */
- static char *
- prepend(dirname, pathname)
- register char *dirname;
- register char *pathname;
- {
- register int i; /* directory name size counter */
-
- for (i = 0; *dirname != '\0'; i++, dirname++)
- continue;
- if ((pathsize += i) < MAXNAMLEN)
- while (i-- > 0)
- *--pathname = *--dirname;
- return (pathname);
- }
-
- # else /* ! hp9000s500 */
- char *
- xgetwd(pathname)
- char *pathname;
- {
- DIR *dp;
- struct dirent *d;
-
- struct stat st_root, st_cur, st_next, st_dot;
- char pathbuf[MAXPATHLEN], nextpathbuf[MAXPATHLEN * 2];
- char *cur_name_add;
- char *pathptr, *nextpathptr;
-
- /* find the inode of root */
- if (stat("/", &st_root) == -1) {
- (void) xsprintf(pathname,
- "getwd: Cannot stat \"/\" (%s)", strerror(errno));
- return (NULL);
- }
- pathbuf[MAXPATHLEN - 1] = '\0';
- pathptr = &pathbuf[MAXPATHLEN - 1];
- nextpathbuf[MAXPATHLEN - 1] = '\0';
- cur_name_add = nextpathptr = &nextpathbuf[MAXPATHLEN - 1];
-
- /* find the inode of the current directory */
- if (lstat("./", &st_cur) == -1) {
- (void) xsprintf(pathname,
- "getwd: Cannot stat \".\" (%s)", strerror(errno));
- return (NULL);
- }
- nextpathptr = strrcpy(nextpathptr, "../");
-
- /* Descend to root */
- for (;;) {
-
- /* look if we found root yet */
- if (st_cur.st_ino == st_root.st_ino &&
- DEV_DEV_COMPARE(st_cur.st_dev, st_root.st_dev)) {
- (void) strcpy(pathname, *pathptr != '/' ? "/" : pathptr);
- return (pathname);
- }
-
- /* open the parent directory */
- if ((dp = opendir(nextpathptr)) == NULL) {
- (void) xsprintf(pathname,
- "getwd: Cannot open directory \"%s\" (%s)",
- nextpathptr, strerror(errno));
- return (NULL);
- }
-
- /* look in the parent for the entry with the same inode */
- for (d = readdir(dp); d != NULL; d = readdir(dp)) {
- (void) strcpy(cur_name_add, d->d_name);
- if (lstat(nextpathptr, &st_next) == -1) {
- (void) xsprintf(pathname, "getwd: Cannot stat \"%s\" (%s)",
- d->d_name, strerror(errno));
- return (NULL);
- }
- if (d->d_name[0] == '.' && d->d_name[1] == '\0')
- st_dot = st_next;
-
- /* check if we found it yet */
- if (st_next.st_ino == st_cur.st_ino &&
- DEV_DEV_COMPARE(st_next.st_dev, st_cur.st_dev)) {
- st_cur = st_dot;
- pathptr = strrcpy(pathptr, d->d_name);
- pathptr = strrcpy(pathptr, "/");
- nextpathptr = strrcpy(nextpathptr, "../");
- *cur_name_add = '\0';
- (void) closedir(dp);
- break;
- }
- }
- if (d == NULL) {
- (void) xsprintf(pathname, "getwd: Cannot find \".\" in \"..\"");
- return (NULL);
- }
- }
- } /* end getwd */
-
- /* strrcpy():
- * Like strcpy, going backwards and returning the new pointer
- */
- static char *
- strrcpy(ptr, str)
- register char *ptr, *str;
- {
- register int len = strlen(str);
-
- while (len)
- *--ptr = str[--len];
-
- return (ptr);
- } /* end strrcpy */
- # endif /* hp9000s500 */
- #endif /* getwd */
-
- #ifdef apollo
- /***
- *** Domain/OS
- ***/
- #undef value /* XXX: Careful here */
- #include <apollo/base.h>
- #include <apollo/loader.h>
- #include <apollo/error.h>
-
-
- static char *
- apperr(st)
- status_$t *st;
- {
- static char buf[BUFSIZE];
- short e_subl, e_modl, e_codel;
- error_$string_t e_sub, e_mod, e_code;
-
- error_$get_text(*st, e_sub, &e_subl, e_mod, &e_modl, e_code, &e_codel);
- e_sub[e_subl] = '\0';
- e_code[e_codel] = '\0';
- e_mod[e_modl] = '\0';
- (void) xsprintf(buf, "%s (%s/%s)", e_code, e_sub, e_mod);
-
- return(buf);
- }
-
- static int
- llib(s)
- Char *s;
- {
- short len = Strlen(s);
- status_$t st;
- char *t;
-
- loader_$inlib(t = short2str(s), len, &st);
- if (st.all != status_$ok)
- stderror(ERR_SYSTEM, t, apperr(&st));
- }
-
- /*ARGSUSED*/
- void
- doinlib(v, c)
- Char **v;
- struct command *c;
- {
- setname(short2str(*v++));
- gflag = 0, tglob(v);
- if (gflag) {
- v = globall(v);
- if (v == 0)
- stderror(ERR_NAME | ERR_NOMATCH);
- }
- else {
- v = gargv = saveblk(v);
- trim(v);
- }
-
- while (v && *v)
- llib(*v++);
- if (gargv)
- blkfree(gargv), gargv = 0;
- }
-
- int
- getv(v)
- Char *v;
- {
- if (eq(v, STRbsd43))
- return(1);
- else if (eq(v, STRsys53))
- return(0);
- else
- stderror(ERR_NAME | ERR_SYSTEM, short2str(v), "Invalid system type");
- /*NOTREACHED*/
- return(0);
- }
-
- /*ARGSUSED*/
- void
- dover(v, c)
- Char **v;
- struct command *c;
- {
- Char *p;
-
- setname(short2str(*v++));
- if (!*v) {
- if (!(p = Getenv(STRSYSTYPE)))
- stderror(ERR_NAME | ERR_STRING, "System type is not set");
- xprintf("%s\n", short2str(p));
- }
- else {
- Setenv(STRSYSTYPE, getv(*v) ? STRbsd43 : STRsys53);
- dohash(NULL, NULL);
- }
- }
-
- /*
- * Many thanks to rees@citi.umich.edu (Jim Rees) and
- * mathys@ssdt-tempe.sps.mot.com (Yves Mathys)
- * For figuring out how to do this... I could have never done
- * it without their help.
- */
- typedef short enum {
- name_$wdir_type,
- name_$ndir_type,
- name_$node_dir_type,
- } name_$dir_type_t;
-
- /*ARGSUSED*/
- void
- dorootnode(v, c)
- Char **v;
- struct command *c;
- {
- name_$dir_type_t dirtype = name_$node_dir_type;
- uid_$t uid;
- status_$t st;
- char *name;
- short namelen;
-
- setname(short2str(*v++));
-
- name = short2str(*v);
- namelen = strlen(name);
-
- name_$resolve(name, &namelen, &uid, &st);
- if (st.all != status_$ok)
- stderror(ERR_SYSTEM, name, apperr(&st));
- namelen = 0;
- name_$set_diru(&uid, "", &namelen, &dirtype, &st);
- if (st.all != status_$ok)
- stderror(ERR_SYSTEM, name, apperr(&st));
- dohash(NULL, NULL);
- }
-
- int
- isapad()
- {
- static int res = -1;
- static status_$t st;
-
- if (res == -1) {
- int strm;
- if (isatty(0))
- strm = 0;
- if (isatty(1))
- strm = 1;
- if (isatty(2))
- strm = 2;
- else {
- res = 0;
- st.all = status_$ok;
- return(res);
- }
- res = stream_$isavt(&strm, &st);
- res = res ? 1 : 0;
- }
- else {
- if (st.all != status_$ok)
- stderror(ERR_SYSTEM, "stream_$isavt", apperr(&st));
- }
- return(res);
- }
- #endif
-