initial import of NetBSD tree

1 files changed, 391 insertions, 0 deletions

diff --git a/bin/sh/miscbltin.c b/bin/sh/miscbltin.c
new file mode 100644
index 00000000000..983296a5c1f
--- /dev/null
+++ b/bin/sh/miscbltin.c
@@ -0,0 +1,391 @@
+/*	$NetBSD: miscbltin.c,v 1.15 1995/06/12 19:44:16 jtc Exp $	*/
+
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Kenneth Almquist.
+ *
+ * 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.
+ */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)miscbltin.c	8.4 (Berkeley) 5/4/95";
+#else
+static char rcsid[] = "$NetBSD: miscbltin.c,v 1.15 1995/06/12 19:44:16 jtc Exp $";
+#endif
+#endif /* not lint */
+
+/*
+ * Miscelaneous builtins.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#include "shell.h"
+#include "options.h"
+#include "var.h"
+#include "output.h"
+#include "memalloc.h"
+#include "error.h"
+#include "mystring.h"
+
+#undef eflag
+
+extern char **argptr;		/* argument list for builtin command */
+
+
+/*
+ * The read builtin.  The -e option causes backslashes to escape the
+ * following character.
+ *
+ * This uses unbuffered input, which may be avoidable in some cases.
+ */
+
+int
+readcmd(argc, argv)
+	int argc;
+	char **argv; 
+{
+	char **ap;
+	int backslash;
+	char c;
+	int eflag;
+	char *prompt;
+	char *ifs;
+	char *p;
+	int startword;
+	int status;
+	int i;
+
+	eflag = 0;
+	prompt = NULL;
+	while ((i = nextopt("ep:")) != '\0') {
+		if (i == 'p')
+			prompt = optarg;
+		else
+			eflag = 1;
+	}
+	if (prompt && isatty(0)) {
+		out2str(prompt);
+		flushall();
+	}
+	if (*(ap = argptr) == NULL)
+		error("arg count");
+	if ((ifs = bltinlookup("IFS", 1)) == NULL)
+		ifs = nullstr;
+	status = 0;
+	startword = 1;
+	backslash = 0;
+	STARTSTACKSTR(p);
+	for (;;) {
+		if (read(0, &c, 1) != 1) {
+			status = 1;
+			break;
+		}
+		if (c == '\0')
+			continue;
+		if (backslash) {
+			backslash = 0;
+			if (c != '\n')
+				STPUTC(c, p);
+			continue;
+		}
+		if (eflag && c == '\\') {
+			backslash++;
+			continue;
+		}
+		if (c == '\n')
+			break;
+		if (startword && *ifs == ' ' && strchr(ifs, c)) {
+			continue;
+		}
+		startword = 0;
+		if (backslash && c == '\\') {
+			if (read(0, &c, 1) != 1) {
+				status = 1;
+				break;
+			}
+			STPUTC(c, p);
+		} else if (ap[1] != NULL && strchr(ifs, c) != NULL) {
+			STACKSTRNUL(p);
+			setvar(*ap, stackblock(), 0);
+			ap++;
+			startword = 1;
+			STARTSTACKSTR(p);
+		} else {
+			STPUTC(c, p);
+		}
+	}
+	STACKSTRNUL(p);
+	setvar(*ap, stackblock(), 0);
+	while (*++ap != NULL)
+		setvar(*ap, nullstr, 0);
+	return status;
+}
+
+
+
+int
+umaskcmd(argc, argv)
+	int argc;
+	char **argv; 
+{
+	char *ap;
+	int mask;
+	int i;
+	int symbolic_mode = 0;
+
+	while ((i = nextopt("S")) != '\0') {
+		symbolic_mode = 1;
+	}
+
+	INTOFF;
+	mask = umask(0);
+	umask(mask);
+	INTON;
+
+	if ((ap = *argptr) == NULL) {
+		if (symbolic_mode) {
+			char u[4], g[4], o[4];
+
+			i = 0;
+			if ((mask & S_IRUSR) == 0)
+				u[i++] = 'r';
+			if ((mask & S_IWUSR) == 0)
+				u[i++] = 'w';
+			if ((mask & S_IXUSR) == 0)
+				u[i++] = 'x';
+			u[i] = '\0';
+
+			i = 0;
+			if ((mask & S_IRGRP) == 0)
+				g[i++] = 'r';
+			if ((mask & S_IWGRP) == 0)
+				g[i++] = 'w';
+			if ((mask & S_IXGRP) == 0)
+				g[i++] = 'x';
+			g[i] = '\0';
+
+			i = 0;
+			if ((mask & S_IROTH) == 0)
+				o[i++] = 'r';
+			if ((mask & S_IWOTH) == 0)
+				o[i++] = 'w';
+			if ((mask & S_IXOTH) == 0)
+				o[i++] = 'x';
+			o[i] = '\0';
+
+			out1fmt("u=%s,g=%s,o=%s\n", u, g, o);
+		} else {
+			out1fmt("%.4o\n", mask);
+		}
+	} else {
+		if (isdigit(*ap)) {
+			mask = 0;
+			do {
+				if (*ap >= '8' || *ap < '0')
+					error("Illegal number: %s", argv[1]);
+				mask = (mask << 3) + (*ap - '0');
+			} while (*++ap != '\0');
+			umask(mask);
+		} else {
+			void *set; 
+			if ((set = setmode (ap)) == 0)
+					error("Illegal number: %s", ap);
+
+			mask = getmode (set, ~mask & 0777);
+			umask(~mask & 0777);
+		}
+	}
+	return 0;
+}
+
+/*
+ * ulimit builtin
+ *
+ * This code, originally by Doug Gwyn, Doug Kingston, Eric Gisin, and
+ * Michael Rendell was ripped from pdksh 5.0.8 and hacked for use with
+ * ash by J.T. Conklin.
+ *
+ * Public domain.
+ */
+
+struct limits {
+	const char *name;
+	int	cmd;
+	int	factor;	/* multiply by to get rlim_{cur,max} values */
+	char	option;
+};
+
+static const struct limits limits[] = {
+#ifdef RLIMIT_CPU
+	{ "time(seconds)",		RLIMIT_CPU,	   1, 't' },
+#endif
+#ifdef RLIMIT_FSIZE
+	{ "file(blocks)",		RLIMIT_FSIZE,	 512, 'f' },
+#endif
+#ifdef RLIMIT_DATA
+	{ "data(kbytes)",		RLIMIT_DATA,	1024, 'd' },
+#endif
+#ifdef RLIMIT_STACK
+	{ "stack(kbytes)",		RLIMIT_STACK,	1024, 's' },
+#endif
+#ifdef  RLIMIT_CORE
+	{ "coredump(blocks)",		RLIMIT_CORE,	 512, 'c' },
+#endif
+#ifdef RLIMIT_RSS
+	{ "memory(kbytes)",		RLIMIT_RSS,	1024, 'm' },
+#endif
+#ifdef RLIMIT_MEMLOCK
+	{ "locked memory(kbytes)",	RLIMIT_MEMLOCK, 1024, 'l' },
+#endif
+#ifdef RLIMIT_NPROC
+	{ "process(processes)",		RLIMIT_NPROC,      1, 'p' },
+#endif
+#ifdef RLIMIT_NOFILE
+	{ "nofiles(descriptors)",	RLIMIT_NOFILE,     1, 'n' },
+#endif
+#ifdef RLIMIT_VMEM
+	{ "vmemory(kbytes)",		RLIMIT_VMEM,	1024, 'v' },
+#endif
+#ifdef RLIMIT_SWAP
+	{ "swap(kbytes)",		RLIMIT_SWAP,	1024, 'w' },
+#endif
+	{ (char *) 0,			0,		   0,  '\0' }
+};
+
+int
+ulimitcmd(argc, argv)
+	int argc;
+	char **argv;
+{
+	register int	c;
+	rlim_t val;
+	enum { SOFT = 0x1, HARD = 0x2 }
+			how = SOFT | HARD;
+	const struct limits	*l;
+	int		set, all = 0;
+	int		optc, what;
+	struct rlimit	limit;
+
+	what = 'f';
+	while ((optc = nextopt("HSatfdsmcnpl")) != '\0')
+		switch (optc) {
+		case 'H':
+			how = HARD;
+			break;
+		case 'S':
+			how = SOFT;
+			break;
+		case 'a':
+			all = 1;
+			break;
+		default:
+			what = optc;
+		}
+
+	for (l = limits; l->name && l->option != what; l++)
+		;
+	if (!l->name)
+		error("ulimit: internal error (%c)\n", what);
+
+	set = *argptr ? 1 : 0;
+	if (set) {
+		char *p = *argptr;
+
+		if (all || argptr[1])
+			error("ulimit: too many arguments\n");
+		if (strcmp(p, "unlimited") == 0)
+			val = RLIM_INFINITY;
+		else {
+			val = (rlim_t) 0;
+
+			while ((c = *p++) >= '0' && c <= '9')
+			{
+				val = (val * 10) + (long)(c - '0');
+				if (val < (rlim_t) 0)
+					break;
+			}
+			if (c)
+				error("ulimit: bad number\n");
+			val *= l->factor;
+		}
+	}
+	if (all) {
+		for (l = limits; l->name; l++) {
+			getrlimit(l->cmd, &limit);
+			if (how & SOFT)
+				val = limit.rlim_cur;
+			else if (how & HARD)
+				val = limit.rlim_max;
+
+			out1fmt("%-20s ", l->name);
+			if (val == RLIM_INFINITY)
+				out1fmt("unlimited\n");
+			else
+			{
+				val /= l->factor;
+				out1fmt("%qd\n", (quad_t) val);
+			}
+		}
+		return 0;
+	}
+
+	getrlimit(l->cmd, &limit);
+	if (set) {
+		if (how & SOFT)
+			limit.rlim_cur = val;
+		if (how & HARD)
+			limit.rlim_max = val;
+		if (setrlimit(l->cmd, &limit) < 0)
+			error("ulimit: bad limit\n");
+	} else {
+		if (how & SOFT)
+			val = limit.rlim_cur;
+		else if (how & HARD)
+			val = limit.rlim_max;
+
+		if (val == RLIM_INFINITY)
+			out1fmt("unlimited\n");
+		else
+		{
+			val /= l->factor;
+			out1fmt("%qd\n", (quad_t) val);
+		}
+	}
+	return 0;
+}