+++ /dev/null
-/* $OpenBSD: pathconf.c,v 1.9 2009/10/27 23:59:34 deraadt Exp $ */
-/* $NetBSD: pathconf.c,v 1.2 1995/09/30 07:12:47 thorpej Exp $ */
-
-/*
- * 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. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <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;
-
-char *equ = " = ";
-
-int
-main(int argc, char *argv[])
-{
- char *path;
- int ch;
-
- while ((ch = getopt(argc, argv, "Aan")) != -1) {
- 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);
- return (0);
- }
- if (argc == 0)
- usage();
- while (argc-- > 0)
- parse(path, *argv, 1);
- return (0);
-}
-
-/*
- * List all variables known to the system.
- */
-listall(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(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%s", string, equ);
- fprintf(stdout, "%d\n", value);
-}
-
-/*
- * Scan a list of names searching for a particular name.
- */
-findname(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)
-{
-
- (void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n",
- "pathname [-n] variable ...",
- "pathname [-n] -a", "pathname [-n] -A");
- exit(1);
-}