BSD 4.4 Lite usr.sbin Sources

1 files changed, 229 insertions, 0 deletions

diff --git a/usr.sbin/sysctl/pathconf.c b/usr.sbin/sysctl/pathconf.c
new file mode 100644
index 0000000..4b60ccf
--- /dev/null
+++ b/usr.sbin/sysctl/pathconf.c
@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)pathconf.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/unistd.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define PC_NAMES { \
+	{ 0, 0 }, \
+	{ "link_max", CTLTYPE_INT }, \
+	{ "max_canon", CTLTYPE_INT }, \
+	{ "max_input", CTLTYPE_INT }, \
+	{ "name_max", CTLTYPE_INT }, \
+	{ "path_max", CTLTYPE_INT }, \
+	{ "pipe_buf", CTLTYPE_INT }, \
+	{ "chown_restricted", CTLTYPE_INT }, \
+	{ "no_trunc", CTLTYPE_INT }, \
+	{ "vdisable", CTLTYPE_INT }, \
+}
+#define PC_MAXID 10
+
+struct ctlname pcnames[] = PC_NAMES;
+char names[BUFSIZ];
+
+struct list {
+	struct	ctlname *list;
+	int	size;
+};
+struct list pclist = { pcnames, PC_MAXID };
+
+int	Aflag, aflag, nflag, wflag, stdinflag;
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	extern char *optarg;
+	extern int optind;
+	char *path;
+	int ch;
+
+	while ((ch = getopt(argc, argv, "Aan")) != EOF) {
+		switch (ch) {
+
+		case 'A':
+			Aflag = 1;
+			break;
+
+		case 'a':
+			aflag = 1;
+			break;
+
+		case 'n':
+			nflag = 1;
+			break;
+
+		default:
+			usage();
+		}
+	}
+	argc -= optind;
+	argv += optind;
+
+	if (argc == 0)
+		usage();
+	path = *argv++;
+	if (strcmp(path, "-") == 0)
+		stdinflag = 1;
+	argc--;
+	if (Aflag || aflag) {
+		listall(path, &pclist);
+		exit(0);
+	}
+	if (argc == 0)
+		usage();
+	while (argc-- > 0)
+		parse(path, *argv, 1);
+	exit(0);
+}
+
+/*
+ * List all variables known to the system.
+ */
+listall(path, lp)
+	char *path;
+	struct list *lp;
+{
+	int lvl2;
+
+	if (lp->list == 0)
+		return;
+	for (lvl2 = 0; lvl2 < lp->size; lvl2++) {
+		if (lp->list[lvl2].ctl_name == 0)
+			continue;
+		parse(path, lp->list[lvl2].ctl_name, Aflag);
+	}
+}
+
+/*
+ * Parse a name into an index.
+ * Lookup and print out the attribute if it exists.
+ */
+parse(pathname, string, flags)
+	char *pathname;
+	char *string;
+	int flags;
+{
+	int indx, value;
+	char *bufp, buf[BUFSIZ];
+
+	bufp = buf;
+	snprintf(buf, BUFSIZ, "%s", string);
+	if ((indx = findname(string, "top", &bufp, &pclist)) == -1)
+		return;
+	if (bufp) {
+		fprintf(stderr, "name %s in %s is unknown\n", *bufp, string);
+		return;
+	}
+	if (stdinflag)
+		value = fpathconf(0, indx);
+	else
+		value = pathconf(pathname, indx);
+	if (value == -1) {
+		if (flags == 0)
+			return;
+		switch (errno) {
+		case EOPNOTSUPP:
+			fprintf(stderr, "%s: value is not available\n", string);
+			return;
+		case ENOTDIR:
+			fprintf(stderr, "%s: specification is incomplete\n",
+			    string);
+			return;
+		case ENOMEM:
+			fprintf(stderr, "%s: type is unknown to this program\n",
+			    string);
+			return;
+		default:
+			perror(string);
+			return;
+		}
+	}
+	if (!nflag)
+		fprintf(stdout, "%s = ", string);
+	fprintf(stdout, "%d\n", value);
+}
+
+/*
+ * Scan a list of names searching for a particular name.
+ */
+findname(string, level, bufp, namelist)
+	char *string;
+	char *level;
+	char **bufp;
+	struct list *namelist;
+{
+	char *name;
+	int i;
+
+	if (namelist->list == 0 || (name = strsep(bufp, ".")) == NULL) {
+		fprintf(stderr, "%s: incomplete specification\n", string);
+		return (-1);
+	}
+	for (i = 0; i < namelist->size; i++)
+		if (namelist->list[i].ctl_name != NULL &&
+		    strcmp(name, namelist->list[i].ctl_name) == 0)
+			break;
+	if (i == namelist->size) {
+		fprintf(stderr, "%s level name %s in %s is invalid\n",
+		    level, name, string);
+		return (-1);
+	}
+	return (i);
+}
+
+usage()
+{
+
+	(void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n",
+	    "pathname [-n] variable ...",
+	    "pathname [-n] -a", "pathname [-n] -A");
+	exit(1);
+}