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- /* $RCSfile: doio.c,v $$Revision: 4.0.1.6 $$Date: 92/06/11 21:08:16 $
- *
- * Copyright (c) 1991, Larry Wall
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Artistic License, as specified in the README file.
- *
- * $Log: doio.c,v $
- * Revision 4.0.1.6 92/06/11 21:08:16 lwall
- * patch34: some systems don't declare h_errno extern in header files
- *
- * Revision 4.0.1.5 92/06/08 13:00:21 lwall
- * patch20: some machines don't define ENOTSOCK in errno.h
- * patch20: new warnings for failed use of stat operators on filenames with \n
- * patch20: wait failed when STDOUT or STDERR reopened to a pipe
- * patch20: end of file latch not reset on reopen of STDIN
- * patch20: seek(HANDLE, 0, 1) went to eof because of ancient Ultrix workaround
- * patch20: fixed memory leak on system() for vfork() machines
- * patch20: get*by* routines now return something useful in a scalar context
- * patch20: h_errno now accessible via $?
- *
- * Revision 4.0.1.4 91/11/05 16:51:43 lwall
- * patch11: prepared for ctype implementations that don't define isascii()
- * patch11: perl mistook some streams for sockets because they return mode 0 too
- * patch11: reopening STDIN, STDOUT and STDERR failed on some machines
- * patch11: certain perl errors should set EBADF so that $! looks better
- * patch11: truncate on a closed filehandle could dump
- * patch11: stats of _ forgot whether prior stat was actually lstat
- * patch11: -T returned true on NFS directory
- *
- * Revision 4.0.1.3 91/06/10 01:21:19 lwall
- * patch10: read didn't work from character special files open for writing
- * patch10: close-on-exec wrongly set on system file descriptors
- *
- * Revision 4.0.1.2 91/06/07 10:53:39 lwall
- * patch4: new copyright notice
- * patch4: system fd's are now treated specially
- * patch4: added $^F variable to specify maximum system fd, default 2
- * patch4: character special files now opened with bidirectional stdio buffers
- * patch4: taintchecks could improperly modify parent in vfork()
- * patch4: many, many itty-bitty portability fixes
- *
- * Revision 4.0.1.1 91/04/11 17:41:06 lwall
- * patch1: hopefully straightened out some of the Xenix mess
- *
- * Revision 4.0 91/03/20 01:07:06 lwall
- * 4.0 baseline.
- *
- */
-
- #include "EXTERN.h"
- #include "perl.h"
-
- #ifdef HAS_SOCKET
- #include <sys/socket.h>
- #include <netdb.h>
- #ifndef ENOTSOCK
- #include <net/errno.h>
- #endif
- #endif
-
- #ifdef HAS_SELECT
- #ifdef I_SYS_SELECT
- #ifndef I_SYS_TIME
- #include <sys/select.h>
- #endif
- #endif
- #endif
-
- #ifdef HOST_NOT_FOUND
- extern int h_errno;
- #endif
-
- #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
- #include <sys/ipc.h>
- #ifdef HAS_MSG
- #include <sys/msg.h>
- #endif
- #ifdef HAS_SEM
- #include <sys/sem.h>
- #endif
- #ifdef HAS_SHM
- #include <sys/shm.h>
- #endif
- #endif
-
- #ifdef I_PWD
- #include <pwd.h>
- #endif
- #ifdef I_GRP
- #include <grp.h>
- #endif
- #ifdef I_UTIME
- #include <utime.h>
- #endif
- #ifdef I_FCNTL
- #include <fcntl.h>
- #endif
- #ifdef I_SYS_FILE
- #include <sys/file.h>
- #endif
-
- int laststatval = -1;
- int laststype = O_STAT;
-
- static char* warn_nl = "Unsuccessful %s on filename containing newline";
-
- bool
- do_open(stab,name,len)
- STAB *stab;
- register char *name;
- int len;
- {
- FILE *fp;
- register STIO *stio = stab_io(stab);
- char *myname = savestr(name);
- int result;
- int fd;
- int writing = 0;
- char mode[3]; /* stdio file mode ("r\0" or "r+\0") */
- FILE *saveifp = Nullfp;
- FILE *saveofp = Nullfp;
- char savetype = ' ';
-
- mode[0] = mode[1] = mode[2] = '\0';
- name = myname;
- forkprocess = 1; /* assume true if no fork */
- while (len && isSPACE(name[len-1]))
- name[--len] = '\0';
- if (!stio)
- stio = stab_io(stab) = stio_new();
- else if (stio->ifp) {
- fd = fileno(stio->ifp);
- if (stio->type == '-')
- result = 0;
- else if (fd <= maxsysfd) {
- saveifp = stio->ifp;
- saveofp = stio->ofp;
- savetype = stio->type;
- result = 0;
- }
- else if (stio->type == '|')
- result = mypclose(stio->ifp);
- else if (stio->ifp != stio->ofp) {
- if (stio->ofp) {
- result = fclose(stio->ofp);
- fclose(stio->ifp); /* clear stdio, fd already closed */
- }
- else
- result = fclose(stio->ifp);
- }
- else
- result = fclose(stio->ifp);
- if (result == EOF && fd > maxsysfd)
- fprintf(stderr,"Warning: unable to close filehandle %s properly.\n",
- stab_ename(stab));
- stio->ofp = stio->ifp = Nullfp;
- }
- if (*name == '+' && len > 1 && name[len-1] != '|') { /* scary */
- mode[1] = *name++;
- mode[2] = '\0';
- --len;
- writing = 1;
- }
- else {
- mode[1] = '\0';
- }
- stio->type = *name;
- if (*name == '|') {
- /*SUPPRESS 530*/
- for (name++; isSPACE(*name); name++) ;
- #ifdef TAINT
- taintenv();
- taintproper("Insecure dependency in piped open");
- #endif
- fp = mypopen(name,"w");
- writing = 1;
- }
- else if (*name == '>') {
- #ifdef TAINT
- taintproper("Insecure dependency in open");
- #endif
- name++;
- if (*name == '>') {
- mode[0] = stio->type = 'a';
- name++;
- }
- else
- mode[0] = 'w';
- writing = 1;
- if (*name == '&') {
- duplicity:
- name++;
- while (isSPACE(*name))
- name++;
- if (isDIGIT(*name))
- fd = atoi(name);
- else {
- stab = stabent(name,FALSE);
- if (!stab || !stab_io(stab)) {
- #ifdef EINVAL
- errno = EINVAL;
- #endif
- goto say_false;
- }
- if (stab_io(stab) && stab_io(stab)->ifp) {
- fd = fileno(stab_io(stab)->ifp);
- if (stab_io(stab)->type == 's')
- stio->type = 's';
- }
- else
- fd = -1;
- }
- if (!(fp = fdopen(fd = dup(fd),mode))) {
- close(fd);
- }
- }
- else {
- while (isSPACE(*name))
- name++;
- if (strEQ(name,"-")) {
- fp = stdout;
- stio->type = '-';
- }
- else {
- fp = fopen(name,mode);
- }
- }
- }
- else {
- if (*name == '<') {
- mode[0] = 'r';
- name++;
- while (isSPACE(*name))
- name++;
- if (*name == '&')
- goto duplicity;
- if (strEQ(name,"-")) {
- fp = stdin;
- stio->type = '-';
- }
- else
- fp = fopen(name,mode);
- }
- else if (name[len-1] == '|') {
- #ifdef TAINT
- taintenv();
- taintproper("Insecure dependency in piped open");
- #endif
- name[--len] = '\0';
- while (len && isSPACE(name[len-1]))
- name[--len] = '\0';
- /*SUPPRESS 530*/
- for (; isSPACE(*name); name++) ;
- fp = mypopen(name,"r");
- stio->type = '|';
- }
- else {
- stio->type = '<';
- /*SUPPRESS 530*/
- for (; isSPACE(*name); name++) ;
- if (strEQ(name,"-")) {
- fp = stdin;
- stio->type = '-';
- }
- else
- fp = fopen(name,"r");
- }
- }
- if (!fp) {
- if (dowarn && stio->type == '<' && index(name, '\n'))
- warn(warn_nl, "open");
- Safefree(myname);
- goto say_false;
- }
- Safefree(myname);
- if (stio->type &&
- stio->type != '|' && stio->type != '-') {
- if (fstat(fileno(fp),&statbuf) < 0) {
- (void)fclose(fp);
- goto say_false;
- }
- if (S_ISSOCK(statbuf.st_mode))
- stio->type = 's'; /* in case a socket was passed in to us */
- #ifdef HAS_SOCKET
- else if (
- #ifdef S_IFMT
- !(statbuf.st_mode & S_IFMT)
- #else
- !statbuf.st_mode
- #endif
- ) {
- int buflen = sizeof tokenbuf;
- if (getsockname(fileno(fp), tokenbuf, &buflen) >= 0
- || errno != ENOTSOCK)
- stio->type = 's'; /* some OS's return 0 on fstat()ed socket */
- /* but some return 0 for streams too, sigh */
- }
- #endif
- }
- if (saveifp) { /* must use old fp? */
- fd = fileno(saveifp);
- if (saveofp) {
- fflush(saveofp); /* emulate fclose() */
- if (saveofp != saveifp) { /* was a socket? */
- fclose(saveofp);
- if (fd > 2)
- Safefree(saveofp);
- }
- }
- if (fd != fileno(fp)) {
- int pid;
- STR *str;
-
- dup2(fileno(fp), fd);
- str = afetch(fdpid,fileno(fp),TRUE);
- pid = str->str_u.str_useful;
- str->str_u.str_useful = 0;
- str = afetch(fdpid,fd,TRUE);
- str->str_u.str_useful = pid;
- fclose(fp);
-
- }
- fp = saveifp;
- clearerr(fp);
- }
- #if defined(HAS_FCNTL) && defined(F_SETFD)
- fd = fileno(fp);
- fcntl(fd,F_SETFD,fd > maxsysfd);
- #endif
- stio->ifp = fp;
- if (writing) {
- if (stio->type == 's'
- || (stio->type == '>' && S_ISCHR(statbuf.st_mode)) ) {
- if (!(stio->ofp = fdopen(fileno(fp),"w"))) {
- fclose(fp);
- stio->ifp = Nullfp;
- goto say_false;
- }
- }
- else
- stio->ofp = fp;
- }
- return TRUE;
-
- say_false:
- stio->ifp = saveifp;
- stio->ofp = saveofp;
- stio->type = savetype;
- return FALSE;
- }
-
- FILE *
- nextargv(stab)
- register STAB *stab;
- {
- register STR *str;
- #ifndef FLEXFILENAMES
- int filedev;
- int fileino;
- #endif
- int fileuid;
- int filegid;
- static int filemode = 0;
- static int lastfd;
- static char *oldname;
-
- if (!argvoutstab)
- argvoutstab = stabent("ARGVOUT",TRUE);
- if (filemode & (S_ISUID|S_ISGID)) {
- fflush(stab_io(argvoutstab)->ifp); /* chmod must follow last write */
- #ifdef HAS_FCHMOD
- (void)fchmod(lastfd,filemode);
- #else
- (void)chmod(oldname,filemode);
- #endif
- }
- filemode = 0;
- while (alen(stab_xarray(stab)) >= 0) {
- str = ashift(stab_xarray(stab));
- str_sset(stab_val(stab),str);
- STABSET(stab_val(stab));
- oldname = str_get(stab_val(stab));
- if (do_open(stab,oldname,stab_val(stab)->str_cur)) {
- if (inplace) {
- #ifdef TAINT
- taintproper("Insecure dependency in inplace open");
- #endif
- if (strEQ(oldname,"-")) {
- str_free(str);
- defoutstab = stabent("STDOUT",TRUE);
- return stab_io(stab)->ifp;
- }
- #ifndef FLEXFILENAMES
- filedev = statbuf.st_dev;
- fileino = statbuf.st_ino;
- #endif
- filemode = statbuf.st_mode;
- fileuid = statbuf.st_uid;
- filegid = statbuf.st_gid;
- if (!S_ISREG(filemode)) {
- warn("Can't do inplace edit: %s is not a regular file",
- oldname );
- do_close(stab,FALSE);
- str_free(str);
- continue;
- }
- if (*inplace) {
- #ifdef SUFFIX
- add_suffix(str,inplace);
- #else
- str_cat(str,inplace);
- #endif
- #ifndef FLEXFILENAMES
- if (stat(str->str_ptr,&statbuf) >= 0
- && statbuf.st_dev == filedev
- && statbuf.st_ino == fileino ) {
- warn("Can't do inplace edit: %s > 14 characters",
- str->str_ptr );
- do_close(stab,FALSE);
- str_free(str);
- continue;
- }
- #endif
- #ifdef HAS_RENAME
- #ifndef DOSISH
- if (rename(oldname,str->str_ptr) < 0) {
- warn("Can't rename %s to %s: %s, skipping file",
- oldname, str->str_ptr, strerror(errno) );
- do_close(stab,FALSE);
- str_free(str);
- continue;
- }
- #else
- do_close(stab,FALSE);
- (void)unlink(str->str_ptr);
- (void)rename(oldname,str->str_ptr);
- do_open(stab,str->str_ptr,stab_val(stab)->str_cur);
- #endif /* MSDOS */
- #else
- (void)UNLINK(str->str_ptr);
- if (link(oldname,str->str_ptr) < 0) {
- warn("Can't rename %s to %s: %s, skipping file",
- oldname, str->str_ptr, strerror(errno) );
- do_close(stab,FALSE);
- str_free(str);
- continue;
- }
- (void)UNLINK(oldname);
- #endif
- }
- else {
- #ifndef DOSISH
- if (UNLINK(oldname) < 0) {
- warn("Can't rename %s to %s: %s, skipping file",
- oldname, str->str_ptr, strerror(errno) );
- do_close(stab,FALSE);
- str_free(str);
- continue;
- }
- #else
- fatal("Can't do inplace edit without backup");
- #endif
- }
-
- str_nset(str,">",1);
- str_cat(str,oldname);
- errno = 0; /* in case sprintf set errno */
- if (!do_open(argvoutstab,str->str_ptr,str->str_cur)) {
- warn("Can't do inplace edit on %s: %s",
- oldname, strerror(errno) );
- do_close(stab,FALSE);
- str_free(str);
- continue;
- }
- defoutstab = argvoutstab;
- lastfd = fileno(stab_io(argvoutstab)->ifp);
- (void)fstat(lastfd,&statbuf);
- #ifdef HAS_FCHMOD
- (void)fchmod(lastfd,filemode);
- #else
- (void)chmod(oldname,filemode);
- #endif
- if (fileuid != statbuf.st_uid || filegid != statbuf.st_gid) {
- #ifdef HAS_FCHOWN
- (void)fchown(lastfd,fileuid,filegid);
- #else
- #ifdef HAS_CHOWN
- (void)chown(oldname,fileuid,filegid);
- #endif
- #endif
- }
- }
- str_free(str);
- return stab_io(stab)->ifp;
- }
- else
- fprintf(stderr,"Can't open %s: %s\n",str_get(str), strerror(errno));
- str_free(str);
- }
- if (inplace) {
- (void)do_close(argvoutstab,FALSE);
- defoutstab = stabent("STDOUT",TRUE);
- }
- return Nullfp;
- }
-
- #ifdef HAS_PIPE
- void
- do_pipe(str, rstab, wstab)
- STR *str;
- STAB *rstab;
- STAB *wstab;
- {
- register STIO *rstio;
- register STIO *wstio;
- int fd[2];
-
- if (!rstab)
- goto badexit;
- if (!wstab)
- goto badexit;
-
- rstio = stab_io(rstab);
- wstio = stab_io(wstab);
-
- if (!rstio)
- rstio = stab_io(rstab) = stio_new();
- else if (rstio->ifp)
- do_close(rstab,FALSE);
- if (!wstio)
- wstio = stab_io(wstab) = stio_new();
- else if (wstio->ifp)
- do_close(wstab,FALSE);
-
- if (pipe(fd) < 0)
- goto badexit;
- rstio->ifp = fdopen(fd[0], "r");
- wstio->ofp = fdopen(fd[1], "w");
- wstio->ifp = wstio->ofp;
- rstio->type = '<';
- wstio->type = '>';
- if (!rstio->ifp || !wstio->ofp) {
- if (rstio->ifp) fclose(rstio->ifp);
- else close(fd[0]);
- if (wstio->ofp) fclose(wstio->ofp);
- else close(fd[1]);
- goto badexit;
- }
-
- str_sset(str,&str_yes);
- return;
-
- badexit:
- str_sset(str,&str_undef);
- return;
- }
- #endif
-
- bool
- do_close(stab,explicit)
- STAB *stab;
- bool explicit;
- {
- bool retval = FALSE;
- register STIO *stio;
- int status;
-
- if (!stab)
- stab = argvstab;
- if (!stab) {
- errno = EBADF;
- return FALSE;
- }
- stio = stab_io(stab);
- if (!stio) { /* never opened */
- if (dowarn && explicit)
- warn("Close on unopened file <%s>",stab_ename(stab));
- return FALSE;
- }
- if (stio->ifp) {
- if (stio->type == '|') {
- status = mypclose(stio->ifp);
- retval = (status == 0);
- statusvalue = (unsigned short)status & 0xffff;
- }
- else if (stio->type == '-')
- retval = TRUE;
- else {
- if (stio->ofp && stio->ofp != stio->ifp) { /* a socket */
- retval = (fclose(stio->ofp) != EOF);
- fclose(stio->ifp); /* clear stdio, fd already closed */
- }
- else
- retval = (fclose(stio->ifp) != EOF);
- }
- stio->ofp = stio->ifp = Nullfp;
- }
- if (explicit)
- stio->lines = 0;
- stio->type = ' ';
- return retval;
- }
-
- bool
- do_eof(stab)
- STAB *stab;
- {
- register STIO *stio;
- int ch;
-
- if (!stab) { /* eof() */
- if (argvstab)
- stio = stab_io(argvstab);
- else
- return TRUE;
- }
- else
- stio = stab_io(stab);
-
- if (!stio)
- return TRUE;
-
- while (stio->ifp) {
-
- #ifdef STDSTDIO /* (the code works without this) */
- if (stio->ifp->_cnt > 0) /* cheat a little, since */
- return FALSE; /* this is the most usual case */
- #endif
-
- ch = getc(stio->ifp);
- if (ch != EOF) {
- (void)ungetc(ch, stio->ifp);
- return FALSE;
- }
- #ifdef STDSTDIO
- if (stio->ifp->_cnt < -1)
- stio->ifp->_cnt = -1;
- #endif
- if (!stab) { /* not necessarily a real EOF yet? */
- if (!nextargv(argvstab)) /* get another fp handy */
- return TRUE;
- }
- else
- return TRUE; /* normal fp, definitely end of file */
- }
- return TRUE;
- }
-
- long
- do_tell(stab)
- STAB *stab;
- {
- register STIO *stio;
-
- if (!stab)
- goto phooey;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto phooey;
-
- #ifdef ULTRIX_STDIO_BOTCH
- if (feof(stio->ifp))
- (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */
- #endif
-
- return ftell(stio->ifp);
-
- phooey:
- if (dowarn)
- warn("tell() on unopened file");
- errno = EBADF;
- return -1L;
- }
-
- bool
- do_seek(stab, pos, whence)
- STAB *stab;
- long pos;
- int whence;
- {
- register STIO *stio;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- #ifdef ULTRIX_STDIO_BOTCH
- if (feof(stio->ifp))
- (void)fseek (stio->ifp, 0L, 2); /* ultrix 1.2 workaround */
- #endif
-
- return fseek(stio->ifp, pos, whence) >= 0;
-
- nuts:
- if (dowarn)
- warn("seek() on unopened file");
- errno = EBADF;
- return FALSE;
- }
-
- int
- do_ctl(optype,stab,func,argstr)
- int optype;
- STAB *stab;
- int func;
- STR *argstr;
- {
- register STIO *stio;
- register char *s;
- int retval;
-
- if (!stab || !argstr || !(stio = stab_io(stab)) || !stio->ifp) {
- errno = EBADF; /* well, sort of... */
- return -1;
- }
-
- if (argstr->str_pok || !argstr->str_nok) {
- if (!argstr->str_pok)
- s = str_get(argstr);
-
- #ifdef IOCPARM_MASK
- #ifndef IOCPARM_LEN
- #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
- #endif
- #endif
- #ifdef IOCPARM_LEN
- retval = IOCPARM_LEN(func); /* on BSDish systes we're safe */
- #else
- retval = 256; /* otherwise guess at what's safe */
- #endif
- if (argstr->str_cur < retval) {
- Str_Grow(argstr,retval+1);
- argstr->str_cur = retval;
- }
-
- s = argstr->str_ptr;
- s[argstr->str_cur] = 17; /* a little sanity check here */
- }
- else {
- retval = (int)str_gnum(argstr);
- #ifdef DOSISH
- s = (char*)(long)retval; /* ouch */
- #else
- s = (char*)retval; /* ouch */
- #endif
- }
-
- #ifndef lint
- if (optype == O_IOCTL)
- retval = ioctl(fileno(stio->ifp), func, s);
- else
- #ifdef DOSISH
- fatal("fcntl is not implemented");
- #else
- #ifdef HAS_FCNTL
- retval = fcntl(fileno(stio->ifp), func, s);
- #else
- fatal("fcntl is not implemented");
- #endif
- #endif
- #else /* lint */
- retval = 0;
- #endif /* lint */
-
- if (argstr->str_pok) {
- if (s[argstr->str_cur] != 17)
- fatal("Return value overflowed string");
- s[argstr->str_cur] = 0; /* put our null back */
- }
- return retval;
- }
-
- int
- do_stat(str,arg,gimme,arglast)
- STR *str;
- register ARG *arg;
- int gimme;
- int *arglast;
- {
- register ARRAY *ary = stack;
- register int sp = arglast[0] + 1;
- int max = 13;
-
- if ((arg[1].arg_type & A_MASK) == A_WORD) {
- tmpstab = arg[1].arg_ptr.arg_stab;
- if (tmpstab != defstab) {
- laststype = O_STAT;
- statstab = tmpstab;
- str_set(statname,"");
- if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp ||
- fstat(fileno(stab_io(tmpstab)->ifp),&statcache) < 0) {
- max = 0;
- laststatval = -1;
- }
- }
- else if (laststatval < 0)
- max = 0;
- }
- else {
- str_set(statname,str_get(ary->ary_array[sp]));
- statstab = Nullstab;
- #ifdef HAS_LSTAT
- laststype = arg->arg_type;
- if (arg->arg_type == O_LSTAT)
- laststatval = lstat(str_get(statname),&statcache);
- else
- #endif
- laststatval = stat(str_get(statname),&statcache);
- if (laststatval < 0) {
- if (dowarn && index(str_get(statname), '\n'))
- warn(warn_nl, "stat");
- max = 0;
- }
- }
-
- if (gimme != G_ARRAY) {
- if (max)
- str_sset(str,&str_yes);
- else
- str_sset(str,&str_undef);
- STABSET(str);
- ary->ary_array[sp] = str;
- return sp;
- }
- sp--;
- if (max) {
- #ifndef lint
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_dev)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_ino)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_mode)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_nlink)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_uid)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_gid)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_rdev)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_size)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_atime)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_mtime)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_ctime)));
- #ifdef STATBLOCKS
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_blksize)));
- (void)astore(ary,++sp,
- str_2mortal(str_nmake((double)statcache.st_blocks)));
- #else
- (void)astore(ary,++sp,
- str_2mortal(str_make("",0)));
- (void)astore(ary,++sp,
- str_2mortal(str_make("",0)));
- #endif
- #else /* lint */
- (void)astore(ary,++sp,str_nmake(0.0));
- #endif /* lint */
- }
- return sp;
- }
-
- #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
- /* code courtesy of William Kucharski */
- #define HAS_CHSIZE
-
- int chsize(fd, length)
- int fd; /* file descriptor */
- off_t length; /* length to set file to */
- {
- extern long lseek();
- struct flock fl;
- struct stat filebuf;
-
- if (fstat(fd, &filebuf) < 0)
- return -1;
-
- if (filebuf.st_size < length) {
-
- /* extend file length */
-
- if ((lseek(fd, (length - 1), 0)) < 0)
- return -1;
-
- /* write a "0" byte */
-
- if ((write(fd, "", 1)) != 1)
- return -1;
- }
- else {
- /* truncate length */
-
- fl.l_whence = 0;
- fl.l_len = 0;
- fl.l_start = length;
- fl.l_type = F_WRLCK; /* write lock on file space */
-
- /*
- * This relies on the UNDOCUMENTED F_FREESP argument to
- * fcntl(2), which truncates the file so that it ends at the
- * position indicated by fl.l_start.
- *
- * Will minor miracles never cease?
- */
-
- if (fcntl(fd, F_FREESP, &fl) < 0)
- return -1;
-
- }
-
- return 0;
- }
- #endif /* F_FREESP */
-
- int /*SUPPRESS 590*/
- do_truncate(str,arg,gimme,arglast)
- STR *str;
- register ARG *arg;
- int gimme;
- int *arglast;
- {
- register ARRAY *ary = stack;
- register int sp = arglast[0] + 1;
- off_t len = (off_t)str_gnum(ary->ary_array[sp+1]);
- int result = 1;
- STAB *tmpstab;
-
- #if defined(HAS_TRUNCATE) || defined(HAS_CHSIZE)
- #ifdef HAS_TRUNCATE
- if ((arg[1].arg_type & A_MASK) == A_WORD) {
- tmpstab = arg[1].arg_ptr.arg_stab;
- if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp ||
- ftruncate(fileno(stab_io(tmpstab)->ifp), len) < 0)
- result = 0;
- }
- else if (truncate(str_get(ary->ary_array[sp]), len) < 0)
- result = 0;
- #else
- if ((arg[1].arg_type & A_MASK) == A_WORD) {
- tmpstab = arg[1].arg_ptr.arg_stab;
- if (!stab_io(tmpstab) || !stab_io(tmpstab)->ifp ||
- chsize(fileno(stab_io(tmpstab)->ifp), len) < 0)
- result = 0;
- }
- else {
- int tmpfd;
-
- if ((tmpfd = open(str_get(ary->ary_array[sp]), 0)) < 0)
- result = 0;
- else {
- if (chsize(tmpfd, len) < 0)
- result = 0;
- close(tmpfd);
- }
- }
- #endif
-
- if (result)
- str_sset(str,&str_yes);
- else
- str_sset(str,&str_undef);
- STABSET(str);
- ary->ary_array[sp] = str;
- return sp;
- #else
- fatal("truncate not implemented");
- #endif
- }
-
- int
- looks_like_number(str)
- STR *str;
- {
- register char *s;
- register char *send;
-
- if (!str->str_pok)
- return TRUE;
- s = str->str_ptr;
- send = s + str->str_cur;
- while (isSPACE(*s))
- s++;
- if (s >= send)
- return FALSE;
- if (*s == '+' || *s == '-')
- s++;
- while (isDIGIT(*s))
- s++;
- if (s == send)
- return TRUE;
- if (*s == '.')
- s++;
- else if (s == str->str_ptr)
- return FALSE;
- while (isDIGIT(*s))
- s++;
- if (s == send)
- return TRUE;
- if (*s == 'e' || *s == 'E') {
- s++;
- if (*s == '+' || *s == '-')
- s++;
- while (isDIGIT(*s))
- s++;
- }
- while (isSPACE(*s))
- s++;
- if (s >= send)
- return TRUE;
- return FALSE;
- }
-
- bool
- do_print(str,fp)
- register STR *str;
- FILE *fp;
- {
- register char *tmps;
-
- if (!fp) {
- if (dowarn)
- warn("print to unopened file");
- errno = EBADF;
- return FALSE;
- }
- if (!str)
- return TRUE;
- if (ofmt &&
- ((str->str_nok && str->str_u.str_nval != 0.0)
- || (looks_like_number(str) && str_gnum(str) != 0.0) ) ) {
- fprintf(fp, ofmt, str->str_u.str_nval);
- return !ferror(fp);
- }
- else {
- tmps = str_get(str);
- if (*tmps == 'S' && tmps[1] == 't' && tmps[2] == 'B' && tmps[3] == '\0'
- && str->str_cur == sizeof(STBP) && strlen(tmps) < str->str_cur) {
- STR *tmpstr = str_mortal(&str_undef);
- stab_efullname(tmpstr,((STAB*)str));/* a stab value, be nice */
- str = tmpstr;
- tmps = str->str_ptr;
- putc('*',fp);
- }
- if (str->str_cur && (fwrite(tmps,1,str->str_cur,fp) == 0 || ferror(fp)))
- return FALSE;
- }
- return TRUE;
- }
-
- bool
- do_aprint(arg,fp,arglast)
- register ARG *arg;
- register FILE *fp;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register int retval;
- register int items = arglast[2] - sp;
-
- if (!fp) {
- if (dowarn)
- warn("print to unopened file");
- errno = EBADF;
- return FALSE;
- }
- st += ++sp;
- if (arg->arg_type == O_PRTF) {
- do_sprintf(arg->arg_ptr.arg_str,items,st);
- retval = do_print(arg->arg_ptr.arg_str,fp);
- }
- else {
- retval = (items <= 0);
- for (; items > 0; items--,st++) {
- if (retval && ofslen) {
- if (fwrite(ofs, 1, ofslen, fp) == 0 || ferror(fp)) {
- retval = FALSE;
- break;
- }
- }
- if (!(retval = do_print(*st, fp)))
- break;
- }
- if (retval && orslen)
- if (fwrite(ors, 1, orslen, fp) == 0 || ferror(fp))
- retval = FALSE;
- }
- return retval;
- }
-
- int
- mystat(arg,str)
- ARG *arg;
- STR *str;
- {
- STIO *stio;
-
- if (arg[1].arg_type & A_DONT) {
- stio = stab_io(arg[1].arg_ptr.arg_stab);
- if (stio && stio->ifp) {
- statstab = arg[1].arg_ptr.arg_stab;
- str_set(statname,"");
- laststype = O_STAT;
- return (laststatval = fstat(fileno(stio->ifp), &statcache));
- }
- else {
- if (arg[1].arg_ptr.arg_stab == defstab)
- return laststatval;
- if (dowarn)
- warn("Stat on unopened file <%s>",
- stab_ename(arg[1].arg_ptr.arg_stab));
- statstab = Nullstab;
- str_set(statname,"");
- return (laststatval = -1);
- }
- }
- else {
- statstab = Nullstab;
- str_set(statname,str_get(str));
- laststype = O_STAT;
- laststatval = stat(str_get(str),&statcache);
- if (laststatval < 0 && dowarn && index(str_get(str), '\n'))
- warn(warn_nl, "stat");
- return laststatval;
- }
- }
-
- int
- mylstat(arg,str)
- ARG *arg;
- STR *str;
- {
- if (arg[1].arg_type & A_DONT) {
- if (arg[1].arg_ptr.arg_stab == defstab) {
- if (laststype != O_LSTAT)
- fatal("The stat preceding -l _ wasn't an lstat");
- return laststatval;
- }
- fatal("You can't use -l on a filehandle");
- }
-
- laststype = O_LSTAT;
- statstab = Nullstab;
- str_set(statname,str_get(str));
- #ifdef HAS_LSTAT
- laststatval = lstat(str_get(str),&statcache);
- #else
- laststatval = stat(str_get(str),&statcache);
- #endif
- if (laststatval < 0 && dowarn && index(str_get(str), '\n'))
- warn(warn_nl, "lstat");
- return laststatval;
- }
-
- STR *
- do_fttext(arg,str)
- register ARG *arg;
- STR *str;
- {
- int i;
- int len;
- int odd = 0;
- STDCHAR tbuf[512];
- register STDCHAR *s;
- register STIO *stio;
-
- if (arg[1].arg_type & A_DONT) {
- if (arg[1].arg_ptr.arg_stab == defstab) {
- if (statstab)
- stio = stab_io(statstab);
- else {
- str = statname;
- goto really_filename;
- }
- }
- else {
- statstab = arg[1].arg_ptr.arg_stab;
- str_set(statname,"");
- stio = stab_io(statstab);
- }
- if (stio && stio->ifp) {
- #if defined(STDSTDIO) || defined(atarist) /* this will work with atariST */
- fstat(fileno(stio->ifp),&statcache);
- if (S_ISDIR(statcache.st_mode)) /* handle NFS glitch */
- return arg->arg_type == O_FTTEXT ? &str_no : &str_yes;
- if (stio->ifp->_cnt <= 0) {
- i = getc(stio->ifp);
- if (i != EOF)
- (void)ungetc(i,stio->ifp);
- }
- if (stio->ifp->_cnt <= 0) /* null file is anything */
- return &str_yes;
- len = stio->ifp->_cnt + (stio->ifp->_ptr - stio->ifp->_base);
- s = stio->ifp->_base;
- #else
- fatal("-T and -B not implemented on filehandles");
- #endif
- }
- else {
- if (dowarn)
- warn("Test on unopened file <%s>",
- stab_ename(arg[1].arg_ptr.arg_stab));
- errno = EBADF;
- return &str_undef;
- }
- }
- else {
- statstab = Nullstab;
- str_set(statname,str_get(str));
- really_filename:
- i = open(str_get(str),0);
- if (i < 0) {
- if (dowarn && index(str_get(str), '\n'))
- warn(warn_nl, "open");
- return &str_undef;
- }
- fstat(i,&statcache);
- len = read(i,tbuf,512);
- (void)close(i);
- if (len <= 0) {
- if (S_ISDIR(statcache.st_mode) && arg->arg_type == O_FTTEXT)
- return &str_no; /* special case NFS directories */
- return &str_yes; /* null file is anything */
- }
- s = tbuf;
- }
-
- /* now scan s to look for textiness */
-
- for (i = 0; i < len; i++,s++) {
- if (!*s) { /* null never allowed in text */
- odd += len;
- break;
- }
- else if (*s & 128)
- odd++;
- else if (*s < 32 &&
- *s != '\n' && *s != '\r' && *s != '\b' &&
- *s != '\t' && *s != '\f' && *s != 27)
- odd++;
- }
-
- if ((odd * 10 > len) == (arg->arg_type == O_FTTEXT)) /* allow 10% odd */
- return &str_no;
- else
- return &str_yes;
- }
-
- static char **Argv = Null(char **);
- static char *Cmd = Nullch;
-
- bool
- do_aexec(really,arglast)
- STR *really;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register int items = arglast[2] - sp;
- register char **a;
- char *tmps;
-
- if (items) {
- New(401,Argv, items+1, char*);
- a = Argv;
- for (st += ++sp; items > 0; items--,st++) {
- if (*st)
- *a++ = str_get(*st);
- else
- *a++ = "";
- }
- *a = Nullch;
- #ifdef TAINT
- if (*Argv[0] != '/') /* will execvp use PATH? */
- taintenv(); /* testing IFS here is overkill, probably */
- #endif
- if (really && *(tmps = str_get(really))) {
- execvp(tmps,Argv);
- }
- else {
- execvp(Argv[0],Argv);
- }
- }
- do_execfree();
- return FALSE;
- }
-
- void
- do_execfree()
- {
- if (Argv) {
- Safefree(Argv);
- Argv = Null(char **);
- }
- if (Cmd) {
- Safefree(Cmd);
- Cmd = Nullch;
- }
- }
-
- bool
- do_exec(cmd)
- char *cmd;
- {
- register char **a;
- register char *s;
- char flags[10];
-
- /* save an extra exec if possible */
-
- #ifdef CSH
- if (strnEQ(cmd,cshname,cshlen) && strnEQ(cmd+cshlen," -c",3)) {
- strcpy(flags,"-c");
- s = cmd+cshlen+3;
- if (*s == 'f') {
- s++;
- strcat(flags,"f");
- }
- if (*s == ' ')
- s++;
- if (*s++ == '\'') {
- char *ncmd = s;
-
- while (*s)
- s++;
- if (s[-1] == '\n')
- *--s = '\0';
- if (s[-1] == '\'') {
- *--s = '\0';
- execl(cshname,"csh", flags,ncmd,(char*)0);
- *s = '\'';
- return FALSE;
- }
- }
- }
- #endif /* CSH */
-
- /* see if there are shell metacharacters in it */
-
- /*SUPPRESS 530*/
- for (s = cmd; *s && isALPHA(*s); s++) ; /* catch VAR=val gizmo */
- if (*s == '=')
- goto doshell;
- for (s = cmd; *s; s++) {
- if (*s != ' ' && !isALPHA(*s) && index("$&*(){}[]'\";\\|?<>~`\n",*s)) {
- if (*s == '\n' && !s[1]) {
- *s = '\0';
- break;
- }
- doshell:
- execl("/bin/sh","sh","-c",cmd,(char*)0);
- return FALSE;
- }
- }
- New(402,Argv, (s - cmd) / 2 + 2, char*);
- Cmd = nsavestr(cmd, s-cmd);
- a = Argv;
- for (s = Cmd; *s;) {
- while (*s && isSPACE(*s)) s++;
- if (*s)
- *(a++) = s;
- while (*s && !isSPACE(*s)) s++;
- if (*s)
- *s++ = '\0';
- }
- *a = Nullch;
- if (Argv[0]) {
- execvp(Argv[0],Argv);
- if (errno == ENOEXEC) { /* for system V NIH syndrome */
- do_execfree();
- goto doshell;
- }
- }
- do_execfree();
- return FALSE;
- }
-
- #ifdef HAS_SOCKET
- int
- do_socket(stab, arglast)
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- int domain, type, protocol, fd;
-
- if (!stab) {
- errno = EBADF;
- return FALSE;
- }
-
- stio = stab_io(stab);
- if (!stio)
- stio = stab_io(stab) = stio_new();
- else if (stio->ifp)
- do_close(stab,FALSE);
-
- domain = (int)str_gnum(st[++sp]);
- type = (int)str_gnum(st[++sp]);
- protocol = (int)str_gnum(st[++sp]);
- #ifdef TAINT
- taintproper("Insecure dependency in socket");
- #endif
- fd = socket(domain,type,protocol);
- if (fd < 0)
- return FALSE;
- stio->ifp = fdopen(fd, "r"); /* stdio gets confused about sockets */
- stio->ofp = fdopen(fd, "w");
- stio->type = 's';
- if (!stio->ifp || !stio->ofp) {
- if (stio->ifp) fclose(stio->ifp);
- if (stio->ofp) fclose(stio->ofp);
- if (!stio->ifp && !stio->ofp) close(fd);
- return FALSE;
- }
-
- return TRUE;
- }
-
- int
- do_bind(stab, arglast)
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- char *addr;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- addr = str_get(st[++sp]);
- #ifdef TAINT
- taintproper("Insecure dependency in bind");
- #endif
- return bind(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0;
-
- nuts:
- if (dowarn)
- warn("bind() on closed fd");
- errno = EBADF;
- return FALSE;
-
- }
-
- int
- do_connect(stab, arglast)
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- char *addr;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- addr = str_get(st[++sp]);
- #ifdef TAINT
- taintproper("Insecure dependency in connect");
- #endif
- return connect(fileno(stio->ifp), addr, st[sp]->str_cur) >= 0;
-
- nuts:
- if (dowarn)
- warn("connect() on closed fd");
- errno = EBADF;
- return FALSE;
-
- }
-
- int
- do_listen(stab, arglast)
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- int backlog;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- backlog = (int)str_gnum(st[++sp]);
- return listen(fileno(stio->ifp), backlog) >= 0;
-
- nuts:
- if (dowarn)
- warn("listen() on closed fd");
- errno = EBADF;
- return FALSE;
- }
-
- void
- do_accept(str, nstab, gstab)
- STR *str;
- STAB *nstab;
- STAB *gstab;
- {
- register STIO *nstio;
- register STIO *gstio;
- int len = sizeof buf;
- int fd;
-
- if (!nstab)
- goto badexit;
- if (!gstab)
- goto nuts;
-
- gstio = stab_io(gstab);
- nstio = stab_io(nstab);
-
- if (!gstio || !gstio->ifp)
- goto nuts;
- if (!nstio)
- nstio = stab_io(nstab) = stio_new();
- else if (nstio->ifp)
- do_close(nstab,FALSE);
-
- fd = accept(fileno(gstio->ifp),(struct sockaddr *)buf,&len);
- if (fd < 0)
- goto badexit;
- nstio->ifp = fdopen(fd, "r");
- nstio->ofp = fdopen(fd, "w");
- nstio->type = 's';
- if (!nstio->ifp || !nstio->ofp) {
- if (nstio->ifp) fclose(nstio->ifp);
- if (nstio->ofp) fclose(nstio->ofp);
- if (!nstio->ifp && !nstio->ofp) close(fd);
- goto badexit;
- }
-
- str_nset(str, buf, len);
- return;
-
- nuts:
- if (dowarn)
- warn("accept() on closed fd");
- errno = EBADF;
- badexit:
- str_sset(str,&str_undef);
- return;
- }
-
- int
- do_shutdown(stab, arglast)
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- int how;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- how = (int)str_gnum(st[++sp]);
- return shutdown(fileno(stio->ifp), how) >= 0;
-
- nuts:
- if (dowarn)
- warn("shutdown() on closed fd");
- errno = EBADF;
- return FALSE;
-
- }
-
- int
- do_sopt(optype, stab, arglast)
- int optype;
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- int fd;
- unsigned int lvl;
- unsigned int optname;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- fd = fileno(stio->ifp);
- lvl = (unsigned int)str_gnum(st[sp+1]);
- optname = (unsigned int)str_gnum(st[sp+2]);
- switch (optype) {
- case O_GSOCKOPT:
- st[sp] = str_2mortal(Str_new(22,257));
- st[sp]->str_cur = 256;
- st[sp]->str_pok = 1;
- if (getsockopt(fd, lvl, optname, st[sp]->str_ptr,
- (int*)&st[sp]->str_cur) < 0)
- goto nuts;
- break;
- case O_SSOCKOPT:
- st[sp] = st[sp+3];
- if (setsockopt(fd, lvl, optname, st[sp]->str_ptr, st[sp]->str_cur) < 0)
- goto nuts;
- st[sp] = &str_yes;
- break;
- }
-
- return sp;
-
- nuts:
- if (dowarn)
- warn("[gs]etsockopt() on closed fd");
- st[sp] = &str_undef;
- errno = EBADF;
- return sp;
-
- }
-
- int
- do_getsockname(optype, stab, arglast)
- int optype;
- STAB *stab;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- int fd;
-
- if (!stab)
- goto nuts;
-
- stio = stab_io(stab);
- if (!stio || !stio->ifp)
- goto nuts;
-
- st[sp] = str_2mortal(Str_new(22,257));
- st[sp]->str_cur = 256;
- st[sp]->str_pok = 1;
- fd = fileno(stio->ifp);
- switch (optype) {
- case O_GETSOCKNAME:
- if (getsockname(fd, st[sp]->str_ptr, (int*)&st[sp]->str_cur) < 0)
- goto nuts2;
- break;
- case O_GETPEERNAME:
- if (getpeername(fd, st[sp]->str_ptr, (int*)&st[sp]->str_cur) < 0)
- goto nuts2;
- break;
- }
-
- return sp;
-
- nuts:
- if (dowarn)
- warn("get{sock,peer}name() on closed fd");
- errno = EBADF;
- nuts2:
- st[sp] = &str_undef;
- return sp;
-
- }
-
- int
- do_ghent(which,gimme,arglast)
- int which;
- int gimme;
- int *arglast;
- {
- register ARRAY *ary = stack;
- register int sp = arglast[0];
- register char **elem;
- register STR *str;
- struct hostent *gethostbyname();
- struct hostent *gethostbyaddr();
- #ifdef HAS_GETHOSTENT
- struct hostent *gethostent();
- #endif
- struct hostent *hent;
- unsigned long len;
-
- if (which == O_GHBYNAME) {
- char *name = str_get(ary->ary_array[sp+1]);
-
- hent = gethostbyname(name);
- }
- else if (which == O_GHBYADDR) {
- STR *addrstr = ary->ary_array[sp+1];
- int addrtype = (int)str_gnum(ary->ary_array[sp+2]);
- char *addr = str_get(addrstr);
-
- hent = gethostbyaddr(addr,addrstr->str_cur,addrtype);
- }
- else
- #ifdef HAS_GETHOSTENT
- hent = gethostent();
- #else
- fatal("gethostent not implemented");
- #endif
-
- #ifdef HOST_NOT_FOUND
- if (!hent)
- statusvalue = (unsigned short)h_errno & 0xffff;
- #endif
-
- if (gimme != G_ARRAY) {
- astore(ary, ++sp, str = str_mortal(&str_undef));
- if (hent) {
- if (which == O_GHBYNAME) {
- #ifdef h_addr
- str_nset(str, *hent->h_addr, hent->h_length);
- #else
- str_nset(str, hent->h_addr, hent->h_length);
- #endif
- }
- else
- str_set(str, hent->h_name);
- }
- return sp;
- }
-
- if (hent) {
- #ifndef lint
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, hent->h_name);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- for (elem = hent->h_aliases; *elem; elem++) {
- str_cat(str, *elem);
- if (elem[1])
- str_ncat(str," ",1);
- }
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)hent->h_addrtype);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- len = hent->h_length;
- str_numset(str, (double)len);
- #ifdef h_addr
- for (elem = hent->h_addr_list; *elem; elem++) {
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_nset(str, *elem, len);
- }
- #else
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_nset(str, hent->h_addr, len);
- #endif /* h_addr */
- #else /* lint */
- elem = Nullch;
- elem = elem;
- (void)astore(ary, ++sp, str_mortal(&str_no));
- #endif /* lint */
- }
-
- return sp;
- }
-
- int
- do_gnent(which,gimme,arglast)
- int which;
- int gimme;
- int *arglast;
- {
- register ARRAY *ary = stack;
- register int sp = arglast[0];
- register char **elem;
- register STR *str;
- struct netent *getnetbyname();
- struct netent *getnetbyaddr();
- struct netent *getnetent();
- struct netent *nent;
-
- if (which == O_GNBYNAME) {
- char *name = str_get(ary->ary_array[sp+1]);
-
- nent = getnetbyname(name);
- }
- else if (which == O_GNBYADDR) {
- unsigned long addr = U_L(str_gnum(ary->ary_array[sp+1]));
- int addrtype = (int)str_gnum(ary->ary_array[sp+2]);
-
- nent = getnetbyaddr((long)addr,addrtype);
- }
- else
- nent = getnetent();
-
- if (gimme != G_ARRAY) {
- astore(ary, ++sp, str = str_mortal(&str_undef));
- if (nent) {
- if (which == O_GNBYNAME)
- str_numset(str, (double)nent->n_net);
- else
- str_set(str, nent->n_name);
- }
- return sp;
- }
-
- if (nent) {
- #ifndef lint
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, nent->n_name);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- for (elem = nent->n_aliases; *elem; elem++) {
- str_cat(str, *elem);
- if (elem[1])
- str_ncat(str," ",1);
- }
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)nent->n_addrtype);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)nent->n_net);
- #else /* lint */
- elem = Nullch;
- elem = elem;
- (void)astore(ary, ++sp, str_mortal(&str_no));
- #endif /* lint */
- }
-
- return sp;
- }
-
- int
- do_gpent(which,gimme,arglast)
- int which;
- int gimme;
- int *arglast;
- {
- register ARRAY *ary = stack;
- register int sp = arglast[0];
- register char **elem;
- register STR *str;
- struct protoent *getprotobyname();
- struct protoent *getprotobynumber();
- struct protoent *getprotoent();
- struct protoent *pent;
-
- if (which == O_GPBYNAME) {
- char *name = str_get(ary->ary_array[sp+1]);
-
- pent = getprotobyname(name);
- }
- else if (which == O_GPBYNUMBER) {
- int proto = (int)str_gnum(ary->ary_array[sp+1]);
-
- pent = getprotobynumber(proto);
- }
- else
- pent = getprotoent();
-
- if (gimme != G_ARRAY) {
- astore(ary, ++sp, str = str_mortal(&str_undef));
- if (pent) {
- if (which == O_GPBYNAME)
- str_numset(str, (double)pent->p_proto);
- else
- str_set(str, pent->p_name);
- }
- return sp;
- }
-
- if (pent) {
- #ifndef lint
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, pent->p_name);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- for (elem = pent->p_aliases; *elem; elem++) {
- str_cat(str, *elem);
- if (elem[1])
- str_ncat(str," ",1);
- }
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)pent->p_proto);
- #else /* lint */
- elem = Nullch;
- elem = elem;
- (void)astore(ary, ++sp, str_mortal(&str_no));
- #endif /* lint */
- }
-
- return sp;
- }
-
- int
- do_gsent(which,gimme,arglast)
- int which;
- int gimme;
- int *arglast;
- {
- register ARRAY *ary = stack;
- register int sp = arglast[0];
- register char **elem;
- register STR *str;
- struct servent *getservbyname();
- struct servent *getservbynumber();
- struct servent *getservent();
- struct servent *sent;
-
- if (which == O_GSBYNAME) {
- char *name = str_get(ary->ary_array[sp+1]);
- char *proto = str_get(ary->ary_array[sp+2]);
-
- if (proto && !*proto)
- proto = Nullch;
-
- sent = getservbyname(name,proto);
- }
- else if (which == O_GSBYPORT) {
- int port = (int)str_gnum(ary->ary_array[sp+1]);
- char *proto = str_get(ary->ary_array[sp+2]);
-
- sent = getservbyport(port,proto);
- }
- else
- sent = getservent();
-
- if (gimme != G_ARRAY) {
- astore(ary, ++sp, str = str_mortal(&str_undef));
- if (sent) {
- if (which == O_GSBYNAME) {
- #ifdef HAS_NTOHS
- str_numset(str, (double)ntohs(sent->s_port));
- #else
- str_numset(str, (double)(sent->s_port));
- #endif
- }
- else
- str_set(str, sent->s_name);
- }
- return sp;
- }
-
- if (sent) {
- #ifndef lint
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, sent->s_name);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- for (elem = sent->s_aliases; *elem; elem++) {
- str_cat(str, *elem);
- if (elem[1])
- str_ncat(str," ",1);
- }
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- #ifdef HAS_NTOHS
- str_numset(str, (double)ntohs(sent->s_port));
- #else
- str_numset(str, (double)(sent->s_port));
- #endif
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, sent->s_proto);
- #else /* lint */
- elem = Nullch;
- elem = elem;
- (void)astore(ary, ++sp, str_mortal(&str_no));
- #endif /* lint */
- }
-
- return sp;
- }
-
- #endif /* HAS_SOCKET */
-
- #ifdef HAS_SELECT
- int
- do_select(gimme,arglast)
- int gimme;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- register int i;
- register int j;
- register char *s;
- register STR *str;
- double value;
- int maxlen = 0;
- int nfound;
- struct timeval timebuf;
- struct timeval *tbuf = &timebuf;
- int growsize;
- #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
- int masksize;
- int offset;
- char *fd_sets[4];
- int k;
-
- #if BYTEORDER & 0xf0000
- #define ORDERBYTE (0x88888888 - BYTEORDER)
- #else
- #define ORDERBYTE (0x4444 - BYTEORDER)
- #endif
-
- #endif
-
- for (i = 1; i <= 3; i++) {
- j = st[sp+i]->str_cur;
- if (maxlen < j)
- maxlen = j;
- }
-
- #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
- growsize = maxlen; /* little endians can use vecs directly */
- #else
- #ifdef NFDBITS
-
- #ifndef NBBY
- #define NBBY 8
- #endif
-
- masksize = NFDBITS / NBBY;
- #else
- masksize = sizeof(long); /* documented int, everyone seems to use long */
- #endif
- growsize = maxlen + (masksize - (maxlen % masksize));
- Zero(&fd_sets[0], 4, char*);
- #endif
-
- for (i = 1; i <= 3; i++) {
- str = st[sp+i];
- j = str->str_len;
- if (j < growsize) {
- if (str->str_pok) {
- Str_Grow(str,growsize);
- s = str_get(str) + j;
- while (++j <= growsize) {
- *s++ = '\0';
- }
- }
- else if (str->str_ptr) {
- Safefree(str->str_ptr);
- str->str_ptr = Nullch;
- }
- }
- #if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
- s = str->str_ptr;
- if (s) {
- New(403, fd_sets[i], growsize, char);
- for (offset = 0; offset < growsize; offset += masksize) {
- for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
- fd_sets[i][j+offset] = s[(k % masksize) + offset];
- }
- }
- #endif
- }
- str = st[sp+4];
- if (str->str_nok || str->str_pok) {
- value = str_gnum(str);
- if (value < 0.0)
- value = 0.0;
- timebuf.tv_sec = (long)value;
- value -= (double)timebuf.tv_sec;
- timebuf.tv_usec = (long)(value * 1000000.0);
- }
- else
- tbuf = Null(struct timeval*);
-
- #if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
- nfound = select(
- maxlen * 8,
- st[sp+1]->str_ptr,
- st[sp+2]->str_ptr,
- st[sp+3]->str_ptr,
- tbuf);
- #else
- nfound = select(
- maxlen * 8,
- fd_sets[1],
- fd_sets[2],
- fd_sets[3],
- tbuf);
- for (i = 1; i <= 3; i++) {
- if (fd_sets[i]) {
- str = st[sp+i];
- s = str->str_ptr;
- for (offset = 0; offset < growsize; offset += masksize) {
- for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
- s[(k % masksize) + offset] = fd_sets[i][j+offset];
- }
- Safefree(fd_sets[i]);
- }
- }
- #endif
-
- st[++sp] = str_mortal(&str_no);
- str_numset(st[sp], (double)nfound);
- if (gimme == G_ARRAY && tbuf) {
- value = (double)(timebuf.tv_sec) +
- (double)(timebuf.tv_usec) / 1000000.0;
- st[++sp] = str_mortal(&str_no);
- str_numset(st[sp], value);
- }
- return sp;
- }
- #endif /* SELECT */
-
- #ifdef HAS_SOCKET
- int
- do_spair(stab1, stab2, arglast)
- STAB *stab1;
- STAB *stab2;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[2];
- register STIO *stio1;
- register STIO *stio2;
- int domain, type, protocol, fd[2];
-
- if (!stab1 || !stab2)
- return FALSE;
-
- stio1 = stab_io(stab1);
- stio2 = stab_io(stab2);
- if (!stio1)
- stio1 = stab_io(stab1) = stio_new();
- else if (stio1->ifp)
- do_close(stab1,FALSE);
- if (!stio2)
- stio2 = stab_io(stab2) = stio_new();
- else if (stio2->ifp)
- do_close(stab2,FALSE);
-
- domain = (int)str_gnum(st[++sp]);
- type = (int)str_gnum(st[++sp]);
- protocol = (int)str_gnum(st[++sp]);
- #ifdef TAINT
- taintproper("Insecure dependency in socketpair");
- #endif
- #ifdef HAS_SOCKETPAIR
- if (socketpair(domain,type,protocol,fd) < 0)
- return FALSE;
- #else
- fatal("Socketpair unimplemented");
- #endif
- stio1->ifp = fdopen(fd[0], "r");
- stio1->ofp = fdopen(fd[0], "w");
- stio1->type = 's';
- stio2->ifp = fdopen(fd[1], "r");
- stio2->ofp = fdopen(fd[1], "w");
- stio2->type = 's';
- if (!stio1->ifp || !stio1->ofp || !stio2->ifp || !stio2->ofp) {
- if (stio1->ifp) fclose(stio1->ifp);
- if (stio1->ofp) fclose(stio1->ofp);
- if (!stio1->ifp && !stio1->ofp) close(fd[0]);
- if (stio2->ifp) fclose(stio2->ifp);
- if (stio2->ofp) fclose(stio2->ofp);
- if (!stio2->ifp && !stio2->ofp) close(fd[1]);
- return FALSE;
- }
-
- return TRUE;
- }
-
- #endif /* HAS_SOCKET */
-
- int
- do_gpwent(which,gimme,arglast)
- int which;
- int gimme;
- int *arglast;
- {
- #ifdef HAS_PASSWD
- register ARRAY *ary = stack;
- register int sp = arglast[0];
- register STR *str;
- struct passwd *getpwnam();
- struct passwd *getpwuid();
- struct passwd *getpwent();
- struct passwd *pwent;
-
- if (which == O_GPWNAM) {
- char *name = str_get(ary->ary_array[sp+1]);
-
- pwent = getpwnam(name);
- }
- else if (which == O_GPWUID) {
- int uid = (int)str_gnum(ary->ary_array[sp+1]);
-
- pwent = getpwuid(uid);
- }
- else
- pwent = getpwent();
-
- if (gimme != G_ARRAY) {
- astore(ary, ++sp, str = str_mortal(&str_undef));
- if (pwent) {
- if (which == O_GPWNAM)
- str_numset(str, (double)pwent->pw_uid);
- else
- str_set(str, pwent->pw_name);
- }
- return sp;
- }
-
- if (pwent) {
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, pwent->pw_name);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, pwent->pw_passwd);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)pwent->pw_uid);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)pwent->pw_gid);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- #ifdef PWCHANGE
- str_numset(str, (double)pwent->pw_change);
- #else
- #ifdef PWQUOTA
- str_numset(str, (double)pwent->pw_quota);
- #else
- #ifdef PWAGE
- str_set(str, pwent->pw_age);
- #endif
- #endif
- #endif
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- #ifdef PWCLASS
- str_set(str,pwent->pw_class);
- #else
- #ifdef PWCOMMENT
- str_set(str, pwent->pw_comment);
- #endif
- #endif
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, pwent->pw_gecos);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, pwent->pw_dir);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, pwent->pw_shell);
- #ifdef PWEXPIRE
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)pwent->pw_expire);
- #endif
- }
-
- return sp;
- #else
- fatal("password routines not implemented");
- #endif
- }
-
- int
- do_ggrent(which,gimme,arglast)
- int which;
- int gimme;
- int *arglast;
- {
- #ifdef I_GRP
- register ARRAY *ary = stack;
- register int sp = arglast[0];
- register char **elem;
- register STR *str;
- struct group *getgrnam();
- struct group *getgrgid();
- struct group *getgrent();
- struct group *grent;
-
- if (which == O_GGRNAM) {
- char *name = str_get(ary->ary_array[sp+1]);
-
- grent = getgrnam(name);
- }
- else if (which == O_GGRGID) {
- int gid = (int)str_gnum(ary->ary_array[sp+1]);
-
- grent = getgrgid(gid);
- }
- else
- grent = getgrent();
-
- if (gimme != G_ARRAY) {
- astore(ary, ++sp, str = str_mortal(&str_undef));
- if (grent) {
- if (which == O_GGRNAM)
- str_numset(str, (double)grent->gr_gid);
- else
- str_set(str, grent->gr_name);
- }
- return sp;
- }
-
- if (grent) {
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, grent->gr_name);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_set(str, grent->gr_passwd);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- str_numset(str, (double)grent->gr_gid);
- (void)astore(ary, ++sp, str = str_mortal(&str_no));
- for (elem = grent->gr_mem; *elem; elem++) {
- str_cat(str, *elem);
- if (elem[1])
- str_ncat(str," ",1);
- }
- }
-
- return sp;
- #else
- fatal("group routines not implemented");
- #endif
- }
-
- int
- do_dirop(optype,stab,gimme,arglast)
- int optype;
- STAB *stab;
- int gimme;
- int *arglast;
- {
- #if defined(DIRENT) && defined(HAS_READDIR)
- register ARRAY *ary = stack;
- register STR **st = ary->ary_array;
- register int sp = arglast[1];
- register STIO *stio;
- long along;
- #ifndef apollo
- struct DIRENT *readdir();
- #endif
- register struct DIRENT *dp;
-
- if (!stab)
- goto nope;
- if (!(stio = stab_io(stab)))
- stio = stab_io(stab) = stio_new();
- if (!stio->dirp && optype != O_OPEN_DIR)
- goto nope;
- st[sp] = &str_yes;
- switch (optype) {
- case O_OPEN_DIR:
- if (stio->dirp)
- closedir(stio->dirp);
- if (!(stio->dirp = opendir(str_get(st[sp+1]))))
- goto nope;
- break;
- case O_READDIR:
- if (gimme == G_ARRAY) {
- --sp;
- /*SUPPRESS 560*/
- while (dp = readdir(stio->dirp)) {
- #ifdef DIRNAMLEN
- (void)astore(ary,++sp,
- str_2mortal(str_make(dp->d_name,dp->d_namlen)));
- #else
- (void)astore(ary,++sp,
- str_2mortal(str_make(dp->d_name,0)));
- #endif
- }
- }
- else {
- if (!(dp = readdir(stio->dirp)))
- goto nope;
- st[sp] = str_mortal(&str_undef);
- #ifdef DIRNAMLEN
- str_nset(st[sp], dp->d_name, dp->d_namlen);
- #else
- str_set(st[sp], dp->d_name);
- #endif
- }
- break;
- #if defined(HAS_TELLDIR) || defined(telldir)
- case O_TELLDIR: {
- #ifndef telldir
- long telldir();
- #endif
- st[sp] = str_mortal(&str_undef);
- str_numset(st[sp], (double)telldir(stio->dirp));
- break;
- }
- #endif
- #if defined(HAS_SEEKDIR) || defined(seekdir)
- case O_SEEKDIR:
- st[sp] = str_mortal(&str_undef);
- along = (long)str_gnum(st[sp+1]);
- (void)seekdir(stio->dirp,along);
- break;
- #endif
- #if defined(HAS_REWINDDIR) || defined(rewinddir)
- case O_REWINDDIR:
- st[sp] = str_mortal(&str_undef);
- (void)rewinddir(stio->dirp);
- break;
- #endif
- case O_CLOSEDIR:
- st[sp] = str_mortal(&str_undef);
- (void)closedir(stio->dirp);
- stio->dirp = 0;
- break;
- default:
- goto phooey;
- }
- return sp;
-
- nope:
- st[sp] = &str_undef;
- if (!errno)
- errno = EBADF;
- return sp;
-
- #endif
- phooey:
- fatal("Unimplemented directory operation");
- }
-
- int
- apply(type,arglast)
- int type;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register int items = arglast[2] - sp;
- register int val;
- register int val2;
- register int tot = 0;
- char *s;
-
- #ifdef TAINT
- for (st += ++sp; items--; st++)
- tainted |= (*st)->str_tainted;
- st = stack->ary_array;
- sp = arglast[1];
- items = arglast[2] - sp;
- #endif
- switch (type) {
- case O_CHMOD:
- #ifdef TAINT
- taintproper("Insecure dependency in chmod");
- #endif
- if (--items > 0) {
- tot = items;
- val = (int)str_gnum(st[++sp]);
- while (items--) {
- if (chmod(str_get(st[++sp]),val))
- tot--;
- }
- }
- break;
- #ifdef HAS_CHOWN
- case O_CHOWN:
- #ifdef TAINT
- taintproper("Insecure dependency in chown");
- #endif
- if (items > 2) {
- items -= 2;
- tot = items;
- val = (int)str_gnum(st[++sp]);
- val2 = (int)str_gnum(st[++sp]);
- while (items--) {
- if (chown(str_get(st[++sp]),val,val2))
- tot--;
- }
- }
- break;
- #endif
- #ifdef HAS_KILL
- case O_KILL:
- #ifdef TAINT
- taintproper("Insecure dependency in kill");
- #endif
- if (--items > 0) {
- tot = items;
- s = str_get(st[++sp]);
- if (isUPPER(*s)) {
- if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
- s += 3;
- if (!(val = whichsig(s)))
- fatal("Unrecognized signal name \"%s\"",s);
- }
- else
- val = (int)str_gnum(st[sp]);
- if (val < 0) {
- val = -val;
- while (items--) {
- int proc = (int)str_gnum(st[++sp]);
- #ifdef HAS_KILLPG
- if (killpg(proc,val)) /* BSD */
- #else
- if (kill(-proc,val)) /* SYSV */
- #endif
- tot--;
- }
- }
- else {
- while (items--) {
- if (kill((int)(str_gnum(st[++sp])),val))
- tot--;
- }
- }
- }
- break;
- #endif
- case O_UNLINK:
- #ifdef TAINT
- taintproper("Insecure dependency in unlink");
- #endif
- tot = items;
- while (items--) {
- s = str_get(st[++sp]);
- if (euid || unsafe) {
- if (UNLINK(s))
- tot--;
- }
- else { /* don't let root wipe out directories without -U */
- #ifdef HAS_LSTAT
- if (lstat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
- #else
- if (stat(s,&statbuf) < 0 || S_ISDIR(statbuf.st_mode))
- #endif
- tot--;
- else {
- if (UNLINK(s))
- tot--;
- }
- }
- }
- break;
- case O_UTIME:
- #ifdef TAINT
- taintproper("Insecure dependency in utime");
- #endif
- if (items > 2) {
- #ifdef I_UTIME
- struct utimbuf utbuf;
- #else
- struct {
- long actime;
- long modtime;
- } utbuf;
- #endif
-
- Zero(&utbuf, sizeof utbuf, char);
- utbuf.actime = (long)str_gnum(st[++sp]); /* time accessed */
- utbuf.modtime = (long)str_gnum(st[++sp]); /* time modified */
- items -= 2;
- #ifndef lint
- tot = items;
- while (items--) {
- if (utime(str_get(st[++sp]),&utbuf))
- tot--;
- }
- #endif
- }
- else
- items = 0;
- break;
- }
- return tot;
- }
-
- /* Do the permissions allow some operation? Assumes statcache already set. */
-
- int
- cando(bit, effective, statbufp)
- int bit;
- int effective;
- register struct stat *statbufp;
- {
- #ifdef DOSISH
- /* [Comments and code from Len Reed]
- * MS-DOS "user" is similar to UNIX's "superuser," but can't write
- * to write-protected files. The execute permission bit is set
- * by the Miscrosoft C library stat() function for the following:
- * .exe files
- * .com files
- * .bat files
- * directories
- * All files and directories are readable.
- * Directories and special files, e.g. "CON", cannot be
- * write-protected.
- * [Comment by Tom Dinger -- a directory can have the write-protect
- * bit set in the file system, but DOS permits changes to
- * the directory anyway. In addition, all bets are off
- * here for networked software, such as Novell and
- * Sun's PC-NFS.]
- */
-
- /* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
- * too so it will actually look into the files for magic numbers
- */
- return (bit & statbufp->st_mode) ? TRUE : FALSE;
-
- #else /* ! MSDOS */
- if ((effective ? euid : uid) == 0) { /* root is special */
- if (bit == S_IXUSR) {
- if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
- return TRUE;
- }
- else
- return TRUE; /* root reads and writes anything */
- return FALSE;
- }
- if (statbufp->st_uid == (effective ? euid : uid) ) {
- if (statbufp->st_mode & bit)
- return TRUE; /* ok as "user" */
- }
- else if (ingroup((int)statbufp->st_gid,effective)) {
- if (statbufp->st_mode & bit >> 3)
- return TRUE; /* ok as "group" */
- }
- else if (statbufp->st_mode & bit >> 6)
- return TRUE; /* ok as "other" */
- return FALSE;
- #endif /* ! MSDOS */
- }
-
- int
- ingroup(testgid,effective)
- int testgid;
- int effective;
- {
- if (testgid == (effective ? egid : gid))
- return TRUE;
- #ifdef HAS_GETGROUPS
- #ifndef NGROUPS
- #define NGROUPS 32
- #endif
- {
- GROUPSTYPE gary[NGROUPS];
- int anum;
-
- anum = getgroups(NGROUPS,gary);
- while (--anum >= 0)
- if (gary[anum] == testgid)
- return TRUE;
- }
- #endif
- return FALSE;
- }
-
- #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
-
- int
- do_ipcget(optype, arglast)
- int optype;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- key_t key;
- int n, flags;
-
- key = (key_t)str_gnum(st[++sp]);
- n = (optype == O_MSGGET) ? 0 : (int)str_gnum(st[++sp]);
- flags = (int)str_gnum(st[++sp]);
- errno = 0;
- switch (optype)
- {
- #ifdef HAS_MSG
- case O_MSGGET:
- return msgget(key, flags);
- #endif
- #ifdef HAS_SEM
- case O_SEMGET:
- return semget(key, n, flags);
- #endif
- #ifdef HAS_SHM
- case O_SHMGET:
- return shmget(key, n, flags);
- #endif
- #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
- default:
- fatal("%s not implemented", opname[optype]);
- #endif
- }
- return -1; /* should never happen */
- }
-
- int
- do_ipcctl(optype, arglast)
- int optype;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- STR *astr;
- char *a;
- int id, n, cmd, infosize, getinfo, ret;
-
- id = (int)str_gnum(st[++sp]);
- n = (optype == O_SEMCTL) ? (int)str_gnum(st[++sp]) : 0;
- cmd = (int)str_gnum(st[++sp]);
- astr = st[++sp];
-
- infosize = 0;
- getinfo = (cmd == IPC_STAT);
-
- switch (optype)
- {
- #ifdef HAS_MSG
- case O_MSGCTL:
- if (cmd == IPC_STAT || cmd == IPC_SET)
- infosize = sizeof(struct msqid_ds);
- break;
- #endif
- #ifdef HAS_SHM
- case O_SHMCTL:
- if (cmd == IPC_STAT || cmd == IPC_SET)
- infosize = sizeof(struct shmid_ds);
- break;
- #endif
- #ifdef HAS_SEM
- case O_SEMCTL:
- if (cmd == IPC_STAT || cmd == IPC_SET)
- infosize = sizeof(struct semid_ds);
- else if (cmd == GETALL || cmd == SETALL)
- {
- struct semid_ds semds;
- if (semctl(id, 0, IPC_STAT, &semds) == -1)
- return -1;
- getinfo = (cmd == GETALL);
- infosize = semds.sem_nsems * sizeof(short);
- /* "short" is technically wrong but much more portable
- than guessing about u_?short(_t)? */
- }
- break;
- #endif
- #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
- default:
- fatal("%s not implemented", opname[optype]);
- #endif
- }
-
- if (infosize)
- {
- if (getinfo)
- {
- STR_GROW(astr, infosize+1);
- a = str_get(astr);
- }
- else
- {
- a = str_get(astr);
- if (astr->str_cur != infosize)
- {
- errno = EINVAL;
- return -1;
- }
- }
- }
- else
- {
- int i = (int)str_gnum(astr);
- a = (char *)i; /* ouch */
- }
- errno = 0;
- switch (optype)
- {
- #ifdef HAS_MSG
- case O_MSGCTL:
- ret = msgctl(id, cmd, (struct msqid_ds *)a);
- break;
- #endif
- #ifdef HAS_SEM
- case O_SEMCTL:
- ret = semctl(id, n, cmd, a);
- break;
- #endif
- #ifdef HAS_SHM
- case O_SHMCTL:
- ret = shmctl(id, cmd, (struct shmid_ds *)a);
- break;
- #endif
- }
- if (getinfo && ret >= 0) {
- astr->str_cur = infosize;
- astr->str_ptr[infosize] = '\0';
- }
- return ret;
- }
-
- int
- do_msgsnd(arglast)
- int *arglast;
- {
- #ifdef HAS_MSG
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- STR *mstr;
- char *mbuf;
- int id, msize, flags;
-
- id = (int)str_gnum(st[++sp]);
- mstr = st[++sp];
- flags = (int)str_gnum(st[++sp]);
- mbuf = str_get(mstr);
- if ((msize = mstr->str_cur - sizeof(long)) < 0) {
- errno = EINVAL;
- return -1;
- }
- errno = 0;
- return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
- #else
- fatal("msgsnd not implemented");
- #endif
- }
-
- int
- do_msgrcv(arglast)
- int *arglast;
- {
- #ifdef HAS_MSG
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- STR *mstr;
- char *mbuf;
- long mtype;
- int id, msize, flags, ret;
-
- id = (int)str_gnum(st[++sp]);
- mstr = st[++sp];
- msize = (int)str_gnum(st[++sp]);
- mtype = (long)str_gnum(st[++sp]);
- flags = (int)str_gnum(st[++sp]);
- mbuf = str_get(mstr);
- if (mstr->str_cur < sizeof(long)+msize+1) {
- STR_GROW(mstr, sizeof(long)+msize+1);
- mbuf = str_get(mstr);
- }
- errno = 0;
- ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
- if (ret >= 0) {
- mstr->str_cur = sizeof(long)+ret;
- mstr->str_ptr[sizeof(long)+ret] = '\0';
- }
- return ret;
- #else
- fatal("msgrcv not implemented");
- #endif
- }
-
- int
- do_semop(arglast)
- int *arglast;
- {
- #ifdef HAS_SEM
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- STR *opstr;
- char *opbuf;
- int id, opsize;
-
- id = (int)str_gnum(st[++sp]);
- opstr = st[++sp];
- opbuf = str_get(opstr);
- opsize = opstr->str_cur;
- if (opsize < sizeof(struct sembuf)
- || (opsize % sizeof(struct sembuf)) != 0) {
- errno = EINVAL;
- return -1;
- }
- errno = 0;
- return semop(id, (struct sembuf *)opbuf, opsize/sizeof(struct sembuf));
- #else
- fatal("semop not implemented");
- #endif
- }
-
- int
- do_shmio(optype, arglast)
- int optype;
- int *arglast;
- {
- #ifdef HAS_SHM
- register STR **st = stack->ary_array;
- register int sp = arglast[0];
- STR *mstr;
- char *mbuf, *shm;
- int id, mpos, msize;
- struct shmid_ds shmds;
- #ifndef VOIDSHMAT
- extern char *shmat();
- #endif
-
- id = (int)str_gnum(st[++sp]);
- mstr = st[++sp];
- mpos = (int)str_gnum(st[++sp]);
- msize = (int)str_gnum(st[++sp]);
- errno = 0;
- if (shmctl(id, IPC_STAT, &shmds) == -1)
- return -1;
- if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
- errno = EFAULT; /* can't do as caller requested */
- return -1;
- }
- shm = (char*)shmat(id, (char*)NULL, (optype == O_SHMREAD) ? SHM_RDONLY : 0);
- if (shm == (char *)-1) /* I hate System V IPC, I really do */
- return -1;
- mbuf = str_get(mstr);
- if (optype == O_SHMREAD) {
- if (mstr->str_cur < msize) {
- STR_GROW(mstr, msize+1);
- mbuf = str_get(mstr);
- }
- Copy(shm + mpos, mbuf, msize, char);
- mstr->str_cur = msize;
- mstr->str_ptr[msize] = '\0';
- }
- else {
- int n;
-
- if ((n = mstr->str_cur) > msize)
- n = msize;
- Copy(mbuf, shm + mpos, n, char);
- if (n < msize)
- memzero(shm + mpos + n, msize - n);
- }
- return shmdt(shm);
- #else
- fatal("shm I/O not implemented");
- #endif
- }
-
- #endif /* SYSV IPC */
-