c4ea5e4067
reasonable close to and in the same format as it had always. r185435 said it would try that but I had been living with jail patches for too long to actually remember the single-line format when adding backwards compatibility back in p4. Reported by: Philipp Wuensche <cryx-freebsd@h3q.com> Tested by: Philipp Wuensche <cryx-freebsd@h3q.com> MFC after: 4 weeks (just for me to get the mail)
258 lines
6.6 KiB
C
258 lines
6.6 KiB
C
/*-
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* Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
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* Copyright (c) 2008 Bjoern A. Zeeb <bz@FreeBSD.org>
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* All rights reserved.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/jail.h>
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#include <sys/sysctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define FLAG_A 0x00001
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#define FLAG_V 0x00002
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#ifdef SUPPORT_OLD_XPRISON
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static
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char *print_xprison_v1(void *p, char *end, unsigned flags)
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{
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struct xprison_v1 *xp;
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struct in_addr in;
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if ((char *)p + sizeof(struct xprison_v1) > end)
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errx(1, "Invalid length for jail");
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xp = (struct xprison_v1 *)p;
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if (flags & FLAG_V) {
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printf("%6d %-29.29s %.74s\n",
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xp->pr_id, xp->pr_host, xp->pr_path);
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/* We are not printing an empty line here for state and name. */
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/* We are not printing an empty line here for cpusetid. */
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/* IPv4 address. */
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in.s_addr = htonl(xp->pr_ip);
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printf("%6s %-15.15s\n", "", inet_ntoa(in));
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} else {
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printf("%6d %-15.15s %-29.29s %.74s\n",
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xp->pr_id, inet_ntoa(in), xp->pr_host, xp->pr_path);
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}
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return ((char *)(xp + 1));
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}
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#endif
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static
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char *print_xprison_v3(void *p, char *end, unsigned flags)
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{
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struct xprison *xp;
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struct in_addr *iap, in;
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struct in6_addr *ia6p;
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char buf[INET6_ADDRSTRLEN];
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const char *state;
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char *q;
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uint32_t i;
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if ((char *)p + sizeof(struct xprison) > end)
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errx(1, "Invalid length for jail");
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xp = (struct xprison *)p;
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if (xp->pr_state < 0 || xp->pr_state >= (int)
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((sizeof(prison_states) / sizeof(struct prison_state))))
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state = "(bogus)";
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else
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state = prison_states[xp->pr_state].state_name;
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/* See if we should print non-ACTIVE jails. No? */
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if ((flags & FLAG_A) == 0 && strcmp(state, "ALIVE")) {
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q = (char *)(xp + 1);
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q += (xp->pr_ip4s * sizeof(struct in_addr));
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if (q > end)
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errx(1, "Invalid length for jail");
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q += (xp->pr_ip6s * sizeof(struct in6_addr));
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if (q > end)
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errx(1, "Invalid length for jail");
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return (q);
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}
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if (flags & FLAG_V)
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printf("%6d %-29.29s %.74s\n",
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xp->pr_id, xp->pr_host, xp->pr_path);
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/* Jail state and name. */
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if (flags & FLAG_V)
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printf("%6s %-29.29s %.74s\n",
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"", (xp->pr_name[0] != '\0') ? xp->pr_name : "", state);
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/* cpusetid. */
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if (flags & FLAG_V)
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printf("%6s %-6d\n",
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"", xp->pr_cpusetid);
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q = (char *)(xp + 1);
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/* IPv4 addresses. */
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iap = (struct in_addr *)(void *)q;
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q += (xp->pr_ip4s * sizeof(struct in_addr));
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if (q > end)
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errx(1, "Invalid length for jail");
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in.s_addr = 0;
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for (i = 0; i < xp->pr_ip4s; i++) {
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if (i == 0 || flags & FLAG_V)
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in.s_addr = iap[i].s_addr;
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if (flags & FLAG_V)
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printf("%6s %-15.15s\n", "", inet_ntoa(in));
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}
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/* IPv6 addresses. */
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ia6p = (struct in6_addr *)(void *)q;
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q += (xp->pr_ip6s * sizeof(struct in6_addr));
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if (q > end)
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errx(1, "Invalid length for jail");
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for (i = 0; i < xp->pr_ip6s; i++) {
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if (flags & FLAG_V) {
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inet_ntop(AF_INET6, &ia6p[i], buf, sizeof(buf));
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printf("%6s %s\n", "", buf);
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}
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}
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/* If requested print the old style single line version. */
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if (!(flags & FLAG_V))
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printf("%6d %-15.15s %-29.29s %.74s\n",
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xp->pr_id, (in.s_addr) ? inet_ntoa(in) : "",
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xp->pr_host, xp->pr_path);
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return (q);
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}
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static void
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usage(void)
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{
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(void)fprintf(stderr, "usage: jls [-av]\n");
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exit(1);
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}
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int
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main(int argc, char *argv[])
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{
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int ch, version;
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unsigned flags;
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size_t i, j, len;
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void *p, *q;
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flags = 0;
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while ((ch = getopt(argc, argv, "av")) != -1) {
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switch (ch) {
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case 'a':
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flags |= FLAG_A;
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break;
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case 'v':
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flags |= FLAG_V;
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break;
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default:
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usage();
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}
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}
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argc -= optind;
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argv += optind;
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if (sysctlbyname("security.jail.list", NULL, &len, NULL, 0) == -1)
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err(1, "sysctlbyname(): security.jail.list");
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j = len;
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for (i = 0; i < 4; i++) {
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if (len <= 0)
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exit(0);
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p = q = malloc(len);
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if (p == NULL)
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err(1, "malloc()");
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if (sysctlbyname("security.jail.list", q, &len, NULL, 0) == -1) {
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if (errno == ENOMEM) {
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free(p);
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p = NULL;
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len += j;
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continue;
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}
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err(1, "sysctlbyname(): security.jail.list");
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}
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break;
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}
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if (p == NULL)
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err(1, "sysctlbyname(): security.jail.list");
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if (len < sizeof(int))
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errx(1, "This is no prison. Kernel and userland out of sync?");
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version = *(int *)p;
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if (version > XPRISON_VERSION)
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errx(1, "Sci-Fi prison. Kernel/userland out of sync?");
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if (flags & FLAG_V) {
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printf(" JID Hostname Path\n");
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printf(" Name State\n");
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printf(" CPUSetID\n");
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printf(" IP Address(es)\n");
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} else {
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printf(" JID IP Address Hostname"
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" Path\n");
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}
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for (; q != NULL && (char *)q + sizeof(int) < (char *)p + len;) {
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version = *(int *)q;
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if (version > XPRISON_VERSION)
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errx(1, "Sci-Fi prison. Kernel/userland out of sync?");
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switch (version) {
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#ifdef SUPPORT_OLD_XPRISON
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case 1:
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q = print_xprison_v1(q, (char *)p + len, flags);
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break;
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case 2:
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errx(1, "Version 2 was used by multi-IPv4 jail "
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"implementations that never made it into the "
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"official kernel.");
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/* NOTREACHED */
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break;
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#endif
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case 3:
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q = print_xprison_v3(q, (char *)p + len, flags);
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break;
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default:
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errx(1, "Prison unknown. Kernel/userland out of sync?");
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/* NOTREACHED */
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break;
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}
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}
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free(p);
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exit(0);
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}
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