aa9caaf657
merge of parallel duplicate work by Steve Price and myself. :-] There are some changes to the build that are my fault... mkinit.c was trying (poorly) to duplicate some of the work that make(1) is designed to do. The Makefile hackery is my fault too, the depend list was incomplete because of some explicit OBJS+= entries, so mkdep wasn't picking up their source file #includes. This closes a pile of /bin/sh PR's, but not all of them.. Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
390 lines
8.1 KiB
C
390 lines
8.1 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: miscbltin.c,v 1.4 1995/10/21 00:47:30 joerg Exp $
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*/
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#ifndef lint
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static char sccsid[] = "@(#)miscbltin.c 8.4 (Berkeley) 5/4/95";
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#endif /* not lint */
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/*
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* Miscelaneous builtins.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <unistd.h>
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#include <ctype.h>
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#include "shell.h"
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#include "options.h"
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#include "var.h"
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#include "output.h"
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#include "memalloc.h"
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#include "error.h"
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#include "mystring.h"
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#undef eflag
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extern char **argptr; /* argument list for builtin command */
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/*
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* The read builtin. The -e option causes backslashes to escape the
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* following character.
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*
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* This uses unbuffered input, which may be avoidable in some cases.
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*/
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int
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readcmd(argc, argv)
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int argc;
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char **argv;
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{
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char **ap;
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int backslash;
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char c;
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int eflag;
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char *prompt;
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char *ifs;
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char *p;
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int startword;
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int status;
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int i;
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eflag = 0;
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prompt = NULL;
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while ((i = nextopt("ep:")) != '\0') {
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if (i == 'p')
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prompt = optarg;
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else
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eflag = 1;
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}
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if (prompt && isatty(0)) {
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out2str(prompt);
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flushall();
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}
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if (*(ap = argptr) == NULL)
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error("arg count");
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if ((ifs = bltinlookup("IFS", 1)) == NULL)
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ifs = nullstr;
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status = 0;
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startword = 1;
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backslash = 0;
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STARTSTACKSTR(p);
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for (;;) {
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if (read(0, &c, 1) != 1) {
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status = 1;
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break;
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}
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if (c == '\0')
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continue;
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if (backslash) {
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backslash = 0;
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if (c != '\n')
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STPUTC(c, p);
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continue;
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}
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if (eflag && c == '\\') {
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backslash++;
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continue;
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}
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if (c == '\n')
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break;
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if (startword && *ifs == ' ' && strchr(ifs, c)) {
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continue;
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}
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startword = 0;
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if (backslash && c == '\\') {
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if (read(0, &c, 1) != 1) {
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status = 1;
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break;
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}
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STPUTC(c, p);
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} else if (ap[1] != NULL && strchr(ifs, c) != NULL) {
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STACKSTRNUL(p);
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setvar(*ap, stackblock(), 0);
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ap++;
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startword = 1;
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STARTSTACKSTR(p);
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} else {
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STPUTC(c, p);
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}
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}
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STACKSTRNUL(p);
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setvar(*ap, stackblock(), 0);
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while (*++ap != NULL)
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setvar(*ap, nullstr, 0);
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return status;
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}
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int
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umaskcmd(argc, argv)
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int argc;
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char **argv;
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{
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char *ap;
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int mask;
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int i;
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int symbolic_mode = 0;
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while ((i = nextopt("S")) != '\0') {
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symbolic_mode = 1;
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}
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INTOFF;
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mask = umask(0);
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umask(mask);
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INTON;
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if ((ap = *argptr) == NULL) {
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if (symbolic_mode) {
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char u[4], g[4], o[4];
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i = 0;
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if ((mask & S_IRUSR) == 0)
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u[i++] = 'r';
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if ((mask & S_IWUSR) == 0)
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u[i++] = 'w';
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if ((mask & S_IXUSR) == 0)
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u[i++] = 'x';
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u[i] = '\0';
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i = 0;
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if ((mask & S_IRGRP) == 0)
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g[i++] = 'r';
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if ((mask & S_IWGRP) == 0)
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g[i++] = 'w';
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if ((mask & S_IXGRP) == 0)
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g[i++] = 'x';
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g[i] = '\0';
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i = 0;
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if ((mask & S_IROTH) == 0)
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o[i++] = 'r';
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if ((mask & S_IWOTH) == 0)
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o[i++] = 'w';
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if ((mask & S_IXOTH) == 0)
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o[i++] = 'x';
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o[i] = '\0';
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out1fmt("u=%s,g=%s,o=%s\n", u, g, o);
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} else {
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out1fmt("%.4o\n", mask);
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}
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} else {
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if (isdigit(*ap)) {
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mask = 0;
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do {
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if (*ap >= '8' || *ap < '0')
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error("Illegal number: %s", argv[1]);
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mask = (mask << 3) + (*ap - '0');
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} while (*++ap != '\0');
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umask(mask);
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} else {
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void *set;
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if ((set = setmode (ap)) == 0)
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error("Illegal number: %s", ap);
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mask = getmode (set, ~mask & 0777);
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umask(~mask & 0777);
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}
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}
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return 0;
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}
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/*
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* ulimit builtin
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*
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* This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and
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* Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with
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* ash by J.T. Conklin.
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*
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* Public domain.
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*/
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struct limits {
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const char *name;
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int cmd;
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int factor; /* multiply by to get rlim_{cur,max} values */
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char option;
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};
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static const struct limits limits[] = {
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#ifdef RLIMIT_CPU
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{ "time(seconds)", RLIMIT_CPU, 1, 't' },
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#endif
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#ifdef RLIMIT_FSIZE
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{ "file(512-blocks)", RLIMIT_FSIZE, 512, 'f' },
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#endif
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#ifdef RLIMIT_DATA
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{ "data(kbytes)", RLIMIT_DATA, 1024, 'd' },
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#endif
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#ifdef RLIMIT_STACK
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{ "stack(kbytes)", RLIMIT_STACK, 1024, 's' },
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#endif
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#ifdef RLIMIT_CORE
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{ "coredump(512-blocks)", RLIMIT_CORE, 512, 'c' },
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#endif
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#ifdef RLIMIT_RSS
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{ "memory(kbytes)", RLIMIT_RSS, 1024, 'm' },
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#endif
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#ifdef RLIMIT_MEMLOCK
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{ "lockedmem(kbytes)", RLIMIT_MEMLOCK, 1024, 'l' },
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#endif
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#ifdef RLIMIT_NPROC
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{ "process(processes)", RLIMIT_NPROC, 1, 'u' },
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#endif
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#ifdef RLIMIT_NOFILE
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{ "nofiles(descriptors)", RLIMIT_NOFILE, 1, 'n' },
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#endif
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#ifdef RLIMIT_VMEM
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{ "vmemory(kbytes)", RLIMIT_VMEM, 1024, 'v' },
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#endif
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#ifdef RLIMIT_SWAP
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{ "swap(kbytes)", RLIMIT_SWAP, 1024, 'w' },
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#endif
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{ (char *) 0, 0, 0, '\0' }
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};
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int
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ulimitcmd(argc, argv)
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int argc;
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char **argv;
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{
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register int c;
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quad_t val;
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enum { SOFT = 0x1, HARD = 0x2 }
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how = SOFT | HARD;
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const struct limits *l;
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int set, all = 0;
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int optc, what;
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struct rlimit limit;
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what = 'f';
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while ((optc = nextopt("HSatfdsmcnpl")) != '\0')
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switch (optc) {
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case 'H':
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how = HARD;
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break;
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case 'S':
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how = SOFT;
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break;
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case 'a':
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all = 1;
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break;
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default:
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what = optc;
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}
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for (l = limits; l->name && l->option != what; l++)
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;
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if (!l->name)
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error("ulimit: internal error (%c)\n", what);
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set = *argptr ? 1 : 0;
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if (set) {
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char *p = *argptr;
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if (all || argptr[1])
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error("ulimit: too many arguments\n");
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if (strcmp(p, "unlimited") == 0)
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val = RLIM_INFINITY;
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else {
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val = (quad_t) 0;
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while ((c = *p++) >= '0' && c <= '9')
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{
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val = (val * 10) + (long)(c - '0');
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if (val < (quad_t) 0)
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break;
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}
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if (c)
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error("ulimit: bad number\n");
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val *= l->factor;
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}
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}
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if (all) {
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for (l = limits; l->name; l++) {
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getrlimit(l->cmd, &limit);
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if (how & SOFT)
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val = limit.rlim_cur;
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else if (how & HARD)
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val = limit.rlim_max;
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out1fmt("%-20s ", l->name);
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if (val == RLIM_INFINITY)
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out1fmt("unlimited\n");
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else
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{
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val /= l->factor;
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out1fmt("%ld\n", (long) val);
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}
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}
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return 0;
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}
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getrlimit(l->cmd, &limit);
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if (set) {
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if (how & SOFT)
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limit.rlim_cur = val;
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if (how & HARD)
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limit.rlim_max = val;
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if (setrlimit(l->cmd, &limit) < 0)
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error("ulimit: bad limit\n");
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} else {
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if (how & SOFT)
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val = limit.rlim_cur;
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else if (how & HARD)
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val = limit.rlim_max;
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}
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if (!set) {
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if (val == RLIM_INFINITY)
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out1fmt("unlimited\n");
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else
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{
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val /= l->factor;
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out1fmt("%ld\n", (long) val);
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}
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}
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return 0;
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}
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