Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sbin/sysctl/sysctl.c

2659 lines
60 KiB
C
Raw Blame History

/* $NetBSD: sysctl.c,v 1.134 2011/04/16 01:15:54 christos Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Brown.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)sysctl.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: sysctl.c,v 1.134 2011/04/16 01:15:54 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/mount.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/sched.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/icmp6.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <machine/cpu.h>
#include <netkey/key_var.h>
#include <assert.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <inttypes.h>
#include <regex.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "prog_ops.h"
/*
* this needs to be able to do the printing and the setting
*/
#define HANDLER_PROTO const char *, const char *, char *, \
int *, u_int, const struct sysctlnode *, \
u_int, void *
#define HANDLER_ARGS const char *sname, const char *dname, char *value, \
int *name, u_int namelen, const struct sysctlnode *pnode, \
u_int type, void *v
#define DISPLAY_VALUE 0
#define DISPLAY_OLD 1
#define DISPLAY_NEW 2
/*
* generic routines
*/
static const struct handlespec *findhandler(const char *, int, regex_t *,
size_t *);
static void canonicalize(const char *, char *);
static void purge_tree(struct sysctlnode *);
static void print_tree(int *, u_int, struct sysctlnode *, u_int, int, regex_t *,
size_t *);
static void write_number(int *, u_int, struct sysctlnode *, char *);
static void write_string(int *, u_int, struct sysctlnode *, char *);
static void display_number(const struct sysctlnode *, const char *,
const void *, size_t, int);
static void display_string(const struct sysctlnode *, const char *,
const void *, size_t, int);
static void display_struct(const struct sysctlnode *, const char *,
const void *, size_t, int);
static void hex_dump(const unsigned char *, size_t);
static void usage(void);
static void parse(char *, regex_t *, size_t *);
static void parse_create(char *);
static void parse_destroy(char *);
static void parse_describe(char *);
static void getdesc1(int *, u_int, struct sysctlnode *);
static void getdesc(int *, u_int, struct sysctlnode *);
static void trim_whitespace(char *, int);
static void sysctlerror(int);
static void sysctlparseerror(u_int, const char *);
static void sysctlperror(const char *, ...);
#define EXIT(n) do { \
if (fn == NULL) exit(n); else return; } while (/*CONSTCOND*/0)
/*
* "borrowed" from libc:sysctlgetmibinfo.c
*/
int __learn_tree(int *, u_int, struct sysctlnode *);
/*
* "handlers"
*/
static void printother(HANDLER_PROTO);
static void kern_clockrate(HANDLER_PROTO);
static void kern_boottime(HANDLER_PROTO);
static void kern_consdev(HANDLER_PROTO);
static void kern_cp_time(HANDLER_PROTO);
static void kern_cp_id(HANDLER_PROTO);
static void kern_drivers(HANDLER_PROTO);
static void vm_loadavg(HANDLER_PROTO);
static void proc_limit(HANDLER_PROTO);
#ifdef CPU_DISKINFO
static void machdep_diskinfo(HANDLER_PROTO);
#endif /* CPU_DISKINFO */
static void mode_bits(HANDLER_PROTO);
static const struct handlespec {
const char *ps_re;
void (*ps_p)(HANDLER_PROTO);
void (*ps_w)(HANDLER_PROTO);
const void *ps_d;
} handlers[] = {
{ "/kern/clockrate", kern_clockrate, NULL, NULL },
{ "/kern/vnode", printother, NULL, "pstat" },
{ "/kern/proc(2|_args)?", printother, NULL, "ps" },
{ "/kern/file2?", printother, NULL, "pstat" },
{ "/kern/ntptime", printother, NULL,
"ntpdc -c kerninfo" },
{ "/kern/msgbuf", printother, NULL, "dmesg" },
{ "/kern/boottime", kern_boottime, NULL, NULL },
{ "/kern/consdev", kern_consdev, NULL, NULL },
{ "/kern/cp_time(/[0-9]+)?", kern_cp_time, NULL, NULL },
{ "/kern/sysvipc_info", printother, NULL, "ipcs" },
{ "/kern/cp_id(/[0-9]+)?", kern_cp_id, NULL, NULL },
{ "/kern/coredump/setid/mode", mode_bits, mode_bits, NULL },
{ "/kern/drivers", kern_drivers, NULL, NULL },
{ "/vm/vmmeter", printother, NULL,
"vmstat' or 'systat" },
{ "/vm/loadavg", vm_loadavg, NULL, NULL },
{ "/vm/uvmexp2?", printother, NULL,
"vmstat' or 'systat" },
{ "/vfs/nfs/nfsstats", printother, NULL, "nfsstat" },
{ "/net/inet6?/tcp6?/ident", printother, NULL, "identd" },
{ "/net/inet6/icmp6/nd6_[dp]rlist", printother, NULL, "ndp" },
{ "/net/key/dumps[ap]", printother, NULL, "setkey" },
{ "/net/[^/]+/[^/]+/pcblist", printother, NULL,
"netstat' or 'sockstat" },
{ "/net/(inet|inet6)/[^/]+/stats", printother, NULL, "netstat"},
{ "/net/bpf/(stats|peers)", printother, NULL, "netstat"},
{ "/net/inet.*/tcp.*/deb.*", printother, NULL, "trpt" },
{ "/net/ns/spp/deb.*", printother, NULL, "trsp" },
{ "/hw/diskstats", printother, NULL, "iostat" },
#ifdef CPU_CONSDEV
{ "/machdep/consdev", kern_consdev, NULL, NULL },
#endif /* CPU_CONSDEV */
#ifdef CPU_DISKINFO
{ "/machdep/diskinfo", machdep_diskinfo, NULL, NULL },
#endif /* CPU_CONSDEV */
{ "/proc/[^/]+/rlimit/[^/]+/[^/]+", proc_limit, proc_limit, NULL },
/*
* these will only be called when the given node has no children
*/
{ "/net/[^/]+", printother, NULL, NULL },
{ "/debug", printother, NULL, NULL },
{ "/ddb", printother, NULL, NULL },
{ "/vendor", printother, NULL, NULL },
{ NULL, NULL, NULL, NULL },
};
struct sysctlnode my_root = {
.sysctl_flags = SYSCTL_VERSION|CTLFLAG_ROOT|CTLTYPE_NODE,
sysc_init_field(_sysctl_size, sizeof(struct sysctlnode)),
.sysctl_num = 0,
.sysctl_name = "(prog_root)",
};
int Aflag, aflag, dflag, Mflag, nflag, qflag, rflag, wflag, xflag;
size_t nr;
char *fn;
int req, stale, errs;
FILE *warnfp = stderr;
/*
* vah-riables n stuff
*/
char gsname[SYSCTL_NAMELEN * CTL_MAXNAME + CTL_MAXNAME],
canonname[SYSCTL_NAMELEN * CTL_MAXNAME + CTL_MAXNAME],
gdname[10 * CTL_MAXNAME + CTL_MAXNAME];
char sep[] = ".";
const char *eq = " = ";
const char *lname[] = {
"top", "second", "third", "fourth", "fifth", "sixth",
"seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"
};
/*
* you've heard of main, haven't you?
*/
int
main(int argc, char *argv[])
{
int name[CTL_MAXNAME];
int ch;
size_t lastcompiled = 0;
regex_t *re;
setprogname(argv[0]);
while ((ch = getopt(argc, argv, "Aabdef:Mnqrwx")) != -1) {
switch (ch) {
case 'A':
Aflag++;
break;
case 'a':
aflag++;
break;
case 'd':
dflag++;
break;
case 'e':
eq = "=";
break;
case 'f':
fn = optarg;
wflag++;
break;
case 'M':
Mflag++;
break;
case 'n':
nflag++;
break;
case 'q':
qflag++;
break;
case 'b': /* FreeBSD compat */
case 'r':
rflag++;
break;
case 'w':
wflag++;
break;
case 'x':
xflag++;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (qflag && !wflag)
usage();
if (xflag && rflag)
usage();
/* if ((xflag || rflag) && wflag)
usage(); */
/* if (aflag && Mflag)
usage(); */
if ((Aflag || Mflag || dflag) && argc == 0 && fn == NULL)
aflag = 1;
if (prog_init && prog_init() == -1)
err(1, "prog init failed");
if (Aflag)
warnfp = stdout;
stale = req = 0;
if ((re = malloc(sizeof(*re) * __arraycount(handlers))) == NULL)
err(1, "malloc regex");
if (aflag) {
print_tree(&name[0], 0, NULL, CTLTYPE_NODE, 1,
re, &lastcompiled);
/* if (argc == 0) */
return (0);
}
if (fn) {
FILE *fp;
char *l;
fp = fopen(fn, "r");
if (fp == NULL) {
err(1, "%s", fn);
} else {
nr = 0;
while ((l = fparseln(fp, NULL, &nr, NULL, 0)) != NULL)
{
if (*l) {
parse(l, re, &lastcompiled);
free(l);
}
}
fclose(fp);
}
return errs ? 1 : 0;
}
if (argc == 0)
usage();
while (argc-- > 0)
parse(*argv++, re, &lastcompiled);
return errs ? 1 : 0;
}
/*
* ********************************************************************
* how to find someone special to handle the reading (or maybe even
* writing) of a particular node
* ********************************************************************
*/
static const struct handlespec *
findhandler(const char *s, int w, regex_t *re, size_t *lastcompiled)
{
const struct handlespec *p;
size_t i, l;
int j;
char eb[64];
regmatch_t match;
p = &handlers[0];
l = strlen(s);
for (i = 0; p[i].ps_re != NULL; i++) {
if (i >= *lastcompiled) {
j = regcomp(&re[i], p[i].ps_re, REG_EXTENDED);
if (j != 0) {
regerror(j, &re[i], eb, sizeof(eb));
errx(1, "regcomp: %s: %s", p[i].ps_re, eb);
}
*lastcompiled = i + 1;
}
j = regexec(&re[i], s, 1, &match, 0);
if (j == 0) {
if (match.rm_so == 0 && match.rm_eo == (int)l &&
(w ? p[i].ps_w : p[i].ps_p) != NULL)
return &p[i];
}
else if (j != REG_NOMATCH) {
regerror(j, &re[i], eb, sizeof(eb));
errx(1, "regexec: %s: %s", p[i].ps_re, eb);
}
}
return NULL;
}
/*
* after sysctlgetmibinfo is done with the name, we convert all
* separators to / and stuff one at the front if it was missing
*/
static void
canonicalize(const char *i, char *o)
{
const char *t;
char p[SYSCTL_NAMELEN + 1];
int l;
if (i[0] != *sep) {
o[0] = '/';
o[1] = '\0';
}
else
o[0] = '\0';
t = i;
do {
i = t;
t = strchr(i, sep[0]);
if (t == NULL)
strcat(o, i);
else {
l = t - i;
t++;
memcpy(p, i, l);
p[l] = '\0';
strcat(o, p);
strcat(o, "/");
}
} while (t != NULL);
}
/*
* ********************************************************************
* convert this special number to a special string so we can print the
* mib
* ********************************************************************
*/
static const char *
sf(u_int f)
{
static char s[256];
const char *c;
s[0] = '\0';
c = "";
#define print_flag(_f, _s, _c, _q, _x) \
if (((_f) & (__CONCAT(CTLFLAG_,_x))) == (__CONCAT(CTLFLAG_,_q))) { \
strlcat((_s), (_c), sizeof(_s)); \
strlcat((_s), __STRING(_q), sizeof(_s)); \
(_c) = ","; \
(_f) &= ~(__CONCAT(CTLFLAG_,_x)); \
}
print_flag(f, s, c, READONLY, READWRITE);
print_flag(f, s, c, READWRITE, READWRITE);
print_flag(f, s, c, ANYWRITE, ANYWRITE);
print_flag(f, s, c, PRIVATE, PRIVATE);
print_flag(f, s, c, PERMANENT, PERMANENT);
print_flag(f, s, c, OWNDATA, OWNDATA);
print_flag(f, s, c, IMMEDIATE, IMMEDIATE);
print_flag(f, s, c, HEX, HEX);
print_flag(f, s, c, ROOT, ROOT);
print_flag(f, s, c, ANYNUMBER, ANYNUMBER);
print_flag(f, s, c, HIDDEN, HIDDEN);
print_flag(f, s, c, ALIAS, ALIAS);
#undef print_flag
if (f) {
char foo[9];
snprintf(foo, sizeof(foo), "%x", f);
strlcat(s, c, sizeof(s));
strlcat(s, foo, sizeof(s));
}
return (s);
}
static const char *
st(u_int t)
{
switch (t) {
case CTLTYPE_NODE:
return "NODE";
case CTLTYPE_INT:
return "INT";
case CTLTYPE_STRING:
return "STRING";
case CTLTYPE_QUAD:
return "QUAD";
case CTLTYPE_STRUCT:
return "STRUCT";
case CTLTYPE_BOOL:
return "BOOL";
}
return "???";
}
/*
* ********************************************************************
* recursively eliminate all data belonging to the given node
* ********************************************************************
*/
static void
purge_tree(struct sysctlnode *rnode)
{
struct sysctlnode *node;
if (rnode == NULL ||
SYSCTL_TYPE(rnode->sysctl_flags) != CTLTYPE_NODE ||
rnode->sysctl_child == NULL)
return;
for (node = rnode->sysctl_child;
node < &rnode->sysctl_child[rnode->sysctl_clen];
node++)
purge_tree(node);
free(rnode->sysctl_child);
rnode->sysctl_csize = 0;
rnode->sysctl_clen = 0;
rnode->sysctl_child = NULL;
if (rnode->sysctl_desc == (const char*)-1)
rnode->sysctl_desc = NULL;
if (rnode->sysctl_desc != NULL)
free(__UNCONST(rnode->sysctl_desc));
rnode->sysctl_desc = NULL;
}
/*
* ********************************************************************
* print this node and any others underneath it
* ********************************************************************
*/
static void
print_tree(int *name, u_int namelen, struct sysctlnode *pnode, u_int type,
int add, regex_t *re, size_t *lastcompiled)
{
struct sysctlnode *node;
int rc;
size_t ni, sz;
char *sp, *dp, n[20];
const struct handlespec *p;
sp = &gsname[strlen(gsname)];
dp = &gdname[strlen(gdname)];
if (sp != &gsname[0] && dp == &gdname[0]) {
/*
* aw...shucks. now we must play catch up
*/
for (ni = 0; ni < namelen; ni++) {
(void)snprintf(n, sizeof(n), "%d", name[ni]);
if (ni > 0)
strncat(gdname, ".", sizeof(gdname));
strncat(gdname, n, sizeof(gdname));
}
}
if (pnode == NULL)
pnode = &my_root;
else if (add) {
snprintf(n, sizeof(n), "%d", pnode->sysctl_num);
if (namelen > 1) {
strncat(gsname, sep, sizeof(gsname));
strncat(gdname, ".", sizeof(gdname));
}
strncat(gsname, pnode->sysctl_name, sizeof(gsname));
strncat(gdname, n, sizeof(gdname));
}
if (Mflag && pnode != &my_root) {
if (nflag)
printf("%s: ", gdname);
else
printf("%s (%s): ", gsname, gdname);
printf("CTLTYPE_%s", st(type));
if (type == CTLTYPE_NODE) {
if (SYSCTL_FLAGS(pnode->sysctl_flags) & CTLFLAG_ALIAS)
printf(", alias %d",
pnode->sysctl_alias);
else
printf(", children %d/%d",
pnode->sysctl_clen,
pnode->sysctl_csize);
}
printf(", size %zu", pnode->sysctl_size);
printf(", flags 0x%x<%s>",
SYSCTL_FLAGS(pnode->sysctl_flags),
sf(SYSCTL_FLAGS(pnode->sysctl_flags)));
if (pnode->sysctl_func)
printf(", func=%p", pnode->sysctl_func);
printf(", ver=%d", pnode->sysctl_ver);
printf("\n");
if (type != CTLTYPE_NODE) {
*sp = *dp = '\0';
return;
}
}
if (dflag && pnode != &my_root) {
if (Aflag || type != CTLTYPE_NODE) {
if (pnode->sysctl_desc == NULL)
getdesc1(name, namelen, pnode);
if (Aflag || !add ||
(pnode->sysctl_desc != NULL &&
pnode->sysctl_desc != (const char*)-1)) {
if (!nflag)
printf("%s: ", gsname);
if (pnode->sysctl_desc == NULL ||
pnode->sysctl_desc == (const char*)-1)
printf("(no description)\n");
else
printf("%s\n", pnode->sysctl_desc);
}
}
if (type != CTLTYPE_NODE) {
*sp = *dp = '\0';
return;
}
}
/*
* if this is an alias and we added our name, that means we
* got here by recursing down into the tree, so skip it. The
* only way to print an aliased node is with either -M or by
* name specifically.
*/
if (SYSCTL_FLAGS(pnode->sysctl_flags) & CTLFLAG_ALIAS && add) {
*sp = *dp = '\0';
return;
}
canonicalize(gsname, canonname);
p = findhandler(canonname, 0, re, lastcompiled);
if (type != CTLTYPE_NODE && p != NULL) {
(*p->ps_p)(gsname, gdname, NULL, name, namelen, pnode, type,
__UNCONST(p->ps_d));
*sp = *dp = '\0';
return;
}
if (type != CTLTYPE_NODE && pnode->sysctl_size == 0) {
rc = prog_sysctl(&name[0], namelen, NULL, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
*sp = *dp = '\0';
return;
}
if (sz == 0) {
if ((Aflag || req) && !Mflag)
printf("%s: node contains no data\n", gsname);
*sp = *dp = '\0';
return;
}
}
else
sz = pnode->sysctl_size;
switch (type) {
case CTLTYPE_NODE: {
__learn_tree(name, namelen, pnode);
node = pnode->sysctl_child;
if (node == NULL) {
if (dflag)
/* do nothing */;
else if (p != NULL)
(*p->ps_p)(gsname, gdname, NULL, name, namelen,
pnode, type, __UNCONST(p->ps_d));
else if ((Aflag || req) && !Mflag)
printf("%s: no children\n", gsname);
}
else {
if (dflag)
/*
* get all descriptions for next level
* in one chunk
*/
getdesc(name, namelen, pnode);
req = 0;
for (ni = 0; ni < pnode->sysctl_clen; ni++) {
name[namelen] = node[ni].sysctl_num;
if ((node[ni].sysctl_flags & CTLFLAG_HIDDEN) &&
!(Aflag || req))
continue;
print_tree(name, namelen + 1, &node[ni],
SYSCTL_TYPE(node[ni].sysctl_flags),
1, re, lastcompiled);
}
}
break;
}
case CTLTYPE_INT: {
int i;
rc = prog_sysctl(name, namelen, &i, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
break;
}
display_number(pnode, gsname, &i, sizeof(i), DISPLAY_VALUE);
break;
}
case CTLTYPE_BOOL: {
bool b;
rc = prog_sysctl(name, namelen, &b, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
break;
}
display_number(pnode, gsname, &b, sizeof(b), DISPLAY_VALUE);
break;
}
case CTLTYPE_STRING: {
unsigned char buf[1024], *tbuf;
tbuf = buf;
sz = sizeof(buf);
rc = prog_sysctl(&name[0], namelen, tbuf, &sz, NULL, 0);
if (rc == -1 && errno == ENOMEM) {
tbuf = malloc(sz);
if (tbuf == NULL) {
sysctlerror(1);
break;
}
rc = prog_sysctl(&name[0], namelen, tbuf, &sz, NULL, 0);
}
if (rc == -1)
sysctlerror(1);
else
display_string(pnode, gsname, tbuf, sz, DISPLAY_VALUE);
if (tbuf != buf)
free(tbuf);
break;
}
case CTLTYPE_QUAD: {
u_quad_t q;
sz = sizeof(q);
rc = prog_sysctl(&name[0], namelen, &q, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
break;
}
display_number(pnode, gsname, &q, sizeof(q), DISPLAY_VALUE);
break;
}
case CTLTYPE_STRUCT: {
/*
* we shouldn't actually get here, but if we
* do, would it be nice to have *something* to
* do other than completely ignore the
* request.
*/
unsigned char *d;
if ((d = malloc(sz)) == NULL) {
fprintf(warnfp, "%s: !malloc failed!\n", gsname);
break;
}
rc = prog_sysctl(&name[0], namelen, d, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
break;
}
display_struct(pnode, gsname, d, sz, DISPLAY_VALUE);
free(d);
break;
}
default:
/* should i print an error here? */
break;
}
*sp = *dp = '\0';
}
/*
* ********************************************************************
* parse a request, possibly determining that it's a create or destroy
* request
* ********************************************************************
*/
static void
parse(char *l, regex_t *re, size_t *lastcompiled)
{
struct sysctlnode *node;
const struct handlespec *w;
int name[CTL_MAXNAME], dodesc = 0;
u_int namelen, type;
char *key, *value, *dot;
size_t sz;
bool optional = false;
req = 1;
key = l;
if ((value = strchr(l, '=')) != NULL) {
if (value > l && value[-1] == '?') {
value[-1] = '\0';
optional = true;
}
*value++ = '\0';
}
if ((dot = strpbrk(key, "./")) == NULL)
sep[0] = '.';
else
sep[0] = dot[0];
sep[1] = '\0';
while (key[0] == sep[0] && key[1] == sep[0]) {
if (value != NULL)
value[-1] = '=';
if (strncmp(key + 2, "create", 6) == 0 &&
(key[8] == '=' || key[8] == sep[0]))
parse_create(key + 8 + (key[8] == '=' ? 1 : 0));
else if (strncmp(key + 2, "destroy", 7) == 0 &&
(key[9] == '=' || key[9] == sep[0]))
parse_destroy(key + 9 + (key[9] == '=' ? 1 : 0));
else if (strncmp(key + 2, "describe", 8) == 0 &&
(key[10] == '=' || key[10] == sep[0])) {
key += 10 + (key[10] == '=');
if ((value = strchr(key, '=')) != NULL)
parse_describe(key);
else {
if (!dflag)
dodesc = 1;
break;
}
}
else
sysctlperror("unable to parse '%s'\n", key);
return;
}
if (stale) {
purge_tree(&my_root);
stale = 0;
}
node = &my_root;
namelen = CTL_MAXNAME;
sz = sizeof(gsname);
if (sysctlgetmibinfo(key, &name[0], &namelen, gsname, &sz, &node,
SYSCTL_VERSION) == -1) {
if (optional)
return;
sysctlparseerror(namelen, l);
EXIT(1);
}
type = SYSCTL_TYPE(node->sysctl_flags);
if (value == NULL) {
if (dodesc)
dflag = 1;
print_tree(&name[0], namelen, node, type, 0, re, lastcompiled);
if (dodesc)
dflag = 0;
gsname[0] = '\0';
return;
}
if (fn)
trim_whitespace(value, 1);
if (!wflag) {
sysctlperror("Must specify -w to set variables\n");
exit(1);
}
canonicalize(gsname, canonname);
if (type != CTLTYPE_NODE && (w = findhandler(canonname, 1, re,
lastcompiled)) != NULL) {
(*w->ps_w)(gsname, gdname, value, name, namelen, node, type,
__UNCONST(w->ps_d));
gsname[0] = '\0';
return;
}
switch (type) {
case CTLTYPE_NODE:
/*
* XXX old behavior is to print. should we error instead?
*/
print_tree(&name[0], namelen, node, CTLTYPE_NODE, 1, re,
lastcompiled);
break;
case CTLTYPE_INT:
case CTLTYPE_BOOL:
case CTLTYPE_QUAD:
write_number(&name[0], namelen, node, value);
break;
case CTLTYPE_STRING:
write_string(&name[0], namelen, node, value);
break;
case CTLTYPE_STRUCT:
/*
* XXX old behavior is to print. should we error instead?
*/
/* fprintf(warnfp, "you can't write to %s\n", gsname); */
print_tree(&name[0], namelen, node, type, 0, re, lastcompiled);
break;
}
}
/*
//create=foo.bar.whatever...,
[type=(int|quad|string|struct|node),]
[size=###,]
[n=###,]
[flags=(iohxparw12),]
[addr=0x####,|symbol=...|value=...]
size is optional for some types. type must be set before anything
else. nodes can have [rwhp], but nothing else applies. if no
size or type is given, node is asserted. writeable is the default,
with [rw] being read-only and unconditionally writeable
respectively. if you specify addr, it is assumed to be the name of
a kernel symbol, if value, CTLFLAG_OWNDATA will be asserted for
strings, CTLFLAG_IMMEDIATE for ints and u_quad_ts. you cannot
specify both value and addr.
*/
static void
parse_create(char *l)
{
struct sysctlnode node;
size_t sz;
char *nname, *key, *value, *data, *addr, *c, *t;
int name[CTL_MAXNAME], i, rc, method, flags, rw;
u_int namelen, type;
u_quad_t uq;
quad_t q;
bool b;
if (!wflag) {
sysctlperror("Must specify -w to create nodes\n");
exit(1);
}
/*
* these are the pieces that make up the description of a new
* node
*/
memset(&node, 0, sizeof(node));
node.sysctl_num = CTL_CREATE; /* any number is fine */
flags = 0;
rw = -1;
type = 0;
sz = 0;
data = addr = NULL;
memset(name, 0, sizeof(name));
namelen = 0;
method = 0;
/*
* misc stuff used when constructing
*/
i = 0;
b = false;
uq = 0;
key = NULL;
value = NULL;
/*
* the name of the thing we're trying to create is first, so
* pick it off.
*/
nname = l;
if ((c = strchr(nname, ',')) != NULL)
*c++ = '\0';
while (c != NULL) {
/*
* pull off the next "key=value" pair
*/
key = c;
if ((t = strchr(key, '=')) != NULL) {
*t++ = '\0';
value = t;
}
else
value = NULL;
/*
* if the "key" is "value", then that eats the rest of
* the string, so we're done, otherwise bite it off at
* the next comma.
*/
if (strcmp(key, "value") == 0) {
c = NULL;
data = value;
break;
}
else if (value) {
if ((c = strchr(value, ',')) != NULL)
*c++ = '\0';
}
/*
* note that we (mostly) let the invoker of prog_sysctl(8)
* play rampant here and depend on the kernel to tell
* them that they were wrong. well...within reason.
* we later check the various parameters against each
* other to make sure it makes some sort of sense.
*/
if (strcmp(key, "addr") == 0) {
/*
* we can't check these two. only the kernel
* can tell us when it fails to find the name
* (or if the address is invalid).
*/
if (method != 0) {
sysctlperror(
"%s: already have %s for new node\n",
nname,
method == CTL_CREATE ? "addr" : "symbol");
EXIT(1);
}
if (value == NULL) {
sysctlperror("%s: missing value\n", nname);
EXIT(1);
}
errno = 0;
addr = (void*)strtoul(value, &t, 0);
if (t == value || *t != '\0' || errno != 0) {
sysctlperror(
"%s: '%s' is not a valid address\n",
nname, value);
EXIT(1);
}
method = CTL_CREATE;
}
else if (strcmp(key, "symbol") == 0) {
if (method != 0) {
sysctlperror(
"%s: already have %s for new node\n",
nname,
method == CTL_CREATE ? "addr" : "symbol");
EXIT(1);
}
addr = value;
method = CTL_CREATESYM;
}
else if (strcmp(key, "type") == 0) {
if (value == NULL) {
sysctlperror("%s: missing value\n", nname);
EXIT(1);
}
if (strcmp(value, "node") == 0)
type = CTLTYPE_NODE;
else if (strcmp(value, "int") == 0) {
sz = sizeof(int);
type = CTLTYPE_INT;
}
else if (strcmp(value, "bool") == 0) {
sz = sizeof(bool);
type = CTLTYPE_BOOL;
}
else if (strcmp(value, "string") == 0)
type = CTLTYPE_STRING;
else if (strcmp(value, "quad") == 0) {
sz = sizeof(u_quad_t);
type = CTLTYPE_QUAD;
}
else if (strcmp(value, "struct") == 0)
type = CTLTYPE_STRUCT;
else {
sysctlperror(
"%s: '%s' is not a valid type\n",
nname, value);
EXIT(1);
}
}
else if (strcmp(key, "size") == 0) {
if (value == NULL) {
sysctlperror("%s: missing value\n", nname);
EXIT(1);
}
errno = 0;
/*
* yes, i know size_t is not an unsigned long,
* but we can all agree that it ought to be,
* right?
*/
sz = strtoul(value, &t, 0);
if (t == value || *t != '\0' || errno != 0) {
sysctlperror(
"%s: '%s' is not a valid size\n",
nname, value);
EXIT(1);
}
}
else if (strcmp(key, "n") == 0) {
if (value == NULL) {
sysctlperror("%s: missing value\n", nname);
EXIT(1);
}
errno = 0;
q = strtoll(value, &t, 0);
if (t == value || *t != '\0' || errno != 0 ||
q < INT_MIN || q > UINT_MAX) {
sysctlperror(
"%s: '%s' is not a valid mib number\n",
nname, value);
EXIT(1);
}
node.sysctl_num = (int)q;
}
else if (strcmp(key, "flags") == 0) {
if (value == NULL) {
sysctlperror("%s: missing value\n", nname);
EXIT(1);
}
t = value;
while (*t != '\0') {
switch (*t) {
case 'a':
flags |= CTLFLAG_ANYWRITE;
break;
case 'h':
flags |= CTLFLAG_HIDDEN;
break;
case 'i':
flags |= CTLFLAG_IMMEDIATE;
break;
case 'o':
flags |= CTLFLAG_OWNDATA;
break;
case 'p':
flags |= CTLFLAG_PRIVATE;
break;
case 'x':
flags |= CTLFLAG_HEX;
break;
case 'r':
rw = CTLFLAG_READONLY;
break;
case 'w':
rw = CTLFLAG_READWRITE;
break;
default:
sysctlperror(
"%s: '%c' is not a valid flag\n",
nname, *t);
EXIT(1);
}
t++;
}
}
else {
sysctlperror("%s: unrecognized keyword '%s'\n",
nname, key);
EXIT(1);
}
}
/*
* now that we've finished parsing the given string, fill in
* anything they didn't specify
*/
if (type == 0)
type = CTLTYPE_NODE;
/*
* the "data" can be interpreted various ways depending on the
* type of node we're creating, as can the size
*/
if (data != NULL) {
if (addr != NULL) {
sysctlperror(
"%s: cannot specify both value and "
"address\n", nname);
EXIT(1);
}
switch (type) {
case CTLTYPE_INT:
errno = 0;
q = strtoll(data, &t, 0);
if (t == data || *t != '\0' || errno != 0 ||
q < INT_MIN || q > UINT_MAX) {
sysctlperror(
"%s: '%s' is not a valid integer\n",
nname, value);
EXIT(1);
}
i = (int)q;
if (!(flags & CTLFLAG_OWNDATA)) {
flags |= CTLFLAG_IMMEDIATE;
node.sysctl_idata = i;
}
else
node.sysctl_data = &i;
if (sz == 0)
sz = sizeof(int);
break;
case CTLTYPE_BOOL:
errno = 0;
q = strtoll(data, &t, 0);
if (t == data || *t != '\0' || errno != 0 ||
(q != 0 && q != 1)) {
sysctlperror(
"%s: '%s' is not a valid bool\n",
nname, value);
EXIT(1);
}
b = q == 1;
if (!(flags & CTLFLAG_OWNDATA)) {
flags |= CTLFLAG_IMMEDIATE;
node.sysctl_idata = b;
}
else
node.sysctl_data = &b;
if (sz == 0)
sz = sizeof(bool);
break;
case CTLTYPE_STRING:
flags |= CTLFLAG_OWNDATA;
node.sysctl_data = data;
if (sz == 0)
sz = strlen(data) + 1;
else if (sz < strlen(data) + 1) {
sysctlperror("%s: ignoring size=%zu for "
"string node, too small for given "
"value\n", nname, sz);
sz = strlen(data) + 1;
}
break;
case CTLTYPE_QUAD:
errno = 0;
uq = strtouq(data, &t, 0);
if (t == data || *t != '\0' || errno != 0) {
sysctlperror(
"%s: '%s' is not a valid quad\n",
nname, value);
EXIT(1);
}
if (!(flags & CTLFLAG_OWNDATA)) {
flags |= CTLFLAG_IMMEDIATE;
node.sysctl_qdata = uq;
}
else
node.sysctl_data = &uq;
if (sz == 0)
sz = sizeof(u_quad_t);
break;
case CTLTYPE_STRUCT:
sysctlperror("%s: struct not initializable\n",
nname);
EXIT(1);
}
/*
* these methods have all provided local starting
* values that the kernel must copy in
*/
}
/*
* hmm...no data, but we have an address of data. that's
* fine.
*/
else if (addr != 0)
node.sysctl_data = (void*)addr;
/*
* no data and no address? well...okay. we might be able to
* manage that.
*/
else if (type != CTLTYPE_NODE) {
if (sz == 0) {
sysctlperror(
"%s: need a size or a starting value\n",
nname);
EXIT(1);
}
if (!(flags & CTLFLAG_IMMEDIATE))
flags |= CTLFLAG_OWNDATA;
}
/*
* now we do a few sanity checks on the description we've
* assembled
*/
if ((flags & CTLFLAG_IMMEDIATE) &&
(type == CTLTYPE_STRING || type == CTLTYPE_STRUCT)) {
sysctlperror("%s: cannot make an immediate %s\n",
nname,
(type == CTLTYPE_STRING) ? "string" : "struct");
EXIT(1);
}
if (type == CTLTYPE_NODE && node.sysctl_data != NULL) {
sysctlperror("%s: nodes do not have data\n", nname);
EXIT(1);
}
/*
* some types must have a particular size
*/
if (sz != 0) {
if ((type == CTLTYPE_INT && sz != sizeof(int)) ||
(type == CTLTYPE_BOOL && sz != sizeof(bool)) ||
(type == CTLTYPE_QUAD && sz != sizeof(u_quad_t)) ||
(type == CTLTYPE_NODE && sz != 0)) {
sysctlperror("%s: wrong size for type\n", nname);
EXIT(1);
}
}
else if (type == CTLTYPE_STRUCT) {
sysctlperror("%s: struct must have size\n", nname);
EXIT(1);
}
/*
* now...if no one said anything yet, we default nodes or
* any type that owns data being writeable, and everything
* else being readonly.
*/
if (rw == -1) {
if (type == CTLTYPE_NODE ||
(flags & (CTLFLAG_OWNDATA|CTLFLAG_IMMEDIATE)))
rw = CTLFLAG_READWRITE;
else
rw = CTLFLAG_READONLY;
}
/*
* if a kernel address was specified, that can't be made
* writeable by us.
if (rw != CTLFLAG_READONLY && addr) {
sysctlperror("%s: kernel data can only be readable\n", nname);
EXIT(1);
}
*/
/*
* what separator were they using in the full name of the new
* node?
*/
if ((t = strpbrk(nname, "./")) == NULL)
sep[0] = '.';
else
sep[0] = t[0];
sep[1] = '\0';
/*
* put it all together, now. t'ain't much, is it?
*/
node.sysctl_flags = SYSCTL_VERSION|flags|rw|type;
node.sysctl_size = sz;
t = strrchr(nname, sep[0]);
if (t != NULL)
strlcpy(node.sysctl_name, t + 1, sizeof(node.sysctl_name));
else
strlcpy(node.sysctl_name, nname, sizeof(node.sysctl_name));
if (t == nname)
t = NULL;
/*
* if this is a new top-level node, then we don't need to find
* the mib for its parent
*/
if (t == NULL) {
namelen = 0;
gsname[0] = '\0';
}
/*
* on the other hand, if it's not a top-level node...
*/
else {
namelen = sizeof(name) / sizeof(name[0]);
sz = sizeof(gsname);
*t = '\0';
rc = sysctlgetmibinfo(nname, &name[0], &namelen,
gsname, &sz, NULL, SYSCTL_VERSION);
*t = sep[0];
if (rc == -1) {
sysctlparseerror(namelen, nname);
EXIT(1);
}
}
/*
* yes, a new node is being created
*/
if (method != 0)
name[namelen++] = method;
else
name[namelen++] = CTL_CREATE;
sz = sizeof(node);
rc = prog_sysctl(&name[0], namelen, &node, &sz, &node, sizeof(node));
if (rc == -1) {
sysctlperror("%s: CTL_CREATE failed: %s\n",
nname, strerror(errno));
EXIT(1);
}
else {
if (!qflag && !nflag)
printf("%s(%s): (created)\n", nname, st(type));
stale = 1;
}
}
static void
parse_destroy(char *l)
{
struct sysctlnode node;
size_t sz;
int name[CTL_MAXNAME], rc;
u_int namelen;
if (!wflag) {
sysctlperror("Must specify -w to destroy nodes\n");
exit(1);
}
memset(name, 0, sizeof(name));
namelen = sizeof(name) / sizeof(name[0]);
sz = sizeof(gsname);
rc = sysctlgetmibinfo(l, &name[0], &namelen, gsname, &sz, NULL,
SYSCTL_VERSION);
if (rc == -1) {
sysctlparseerror(namelen, l);
EXIT(1);
}
memset(&node, 0, sizeof(node));
node.sysctl_flags = SYSCTL_VERSION;
node.sysctl_num = name[namelen - 1];
name[namelen - 1] = CTL_DESTROY;
sz = sizeof(node);
rc = prog_sysctl(&name[0], namelen, &node, &sz, &node, sizeof(node));
if (rc == -1) {
sysctlperror("%s: CTL_DESTROY failed: %s\n",
l, strerror(errno));
EXIT(1);
}
else {
if (!qflag && !nflag)
printf("%s(%s): (destroyed)\n", gsname,
st(SYSCTL_TYPE(node.sysctl_flags)));
stale = 1;
}
}
static void
parse_describe(char *l)
{
struct sysctlnode newdesc;
char buf[1024], *value;
struct sysctldesc *d = (void*)&buf[0];
int name[CTL_MAXNAME], rc;
u_int namelen;
size_t sz;
if (!wflag) {
sysctlperror("Must specify -w to set descriptions\n");
exit(1);
}
value = strchr(l, '=');
*value++ = '\0';
memset(name, 0, sizeof(name));
namelen = sizeof(name) / sizeof(name[0]);
sz = sizeof(gsname);
rc = sysctlgetmibinfo(l, &name[0], &namelen, gsname, &sz, NULL,
SYSCTL_VERSION);
if (rc == -1) {
sysctlparseerror(namelen, l);
EXIT(1);
}
sz = sizeof(buf);
memset(&newdesc, 0, sizeof(newdesc));
newdesc.sysctl_flags = SYSCTL_VERSION|CTLFLAG_OWNDESC;
newdesc.sysctl_num = name[namelen - 1];
newdesc.sysctl_desc = value;
name[namelen - 1] = CTL_DESCRIBE;
rc = prog_sysctl(name, namelen, d, &sz, &newdesc, sizeof(newdesc));
if (rc == -1)
sysctlperror("%s: CTL_DESCRIBE failed: %s\n",
gsname, strerror(errno));
else if (d->descr_len == 1)
sysctlperror("%s: description not set\n", gsname);
else if (!qflag && !nflag)
printf("%s: %s\n", gsname, d->descr_str);
}
/*
* ********************************************************************
* when things go wrong...
* ********************************************************************
*/
static void
usage(void)
{
const char *progname = getprogname();
(void)fprintf(stderr,
"usage:\t%s %s\n"
"\t%s %s\n"
"\t%s %s\n"
"\t%s %s\n"
"\t%s %s\n"
"\t%s %s\n",
progname, "[-dne] [-x[x]|-r] variable ...",
progname, "[-ne] [-q] -w variable=value ...",
progname, "[-dne] -a",
progname, "[-dne] -A",
progname, "[-ne] -M",
progname, "[-dne] [-q] -f file");
exit(1);
}
static void
getdesc1(int *name, u_int namelen, struct sysctlnode *pnode)
{
struct sysctlnode node;
char buf[1024], *desc;
struct sysctldesc *d = (void*)buf;
size_t sz = sizeof(buf);
int rc;
memset(&node, 0, sizeof(node));
node.sysctl_flags = SYSCTL_VERSION;
node.sysctl_num = name[namelen - 1];
name[namelen - 1] = CTL_DESCRIBE;
rc = prog_sysctl(name, namelen, d, &sz, &node, sizeof(node));
if (rc == -1 ||
d->descr_len == 1 ||
d->descr_num != pnode->sysctl_num ||
d->descr_ver != pnode->sysctl_ver)
desc = (char *)-1;
else
desc = malloc(d->descr_len);
if (desc == NULL)
desc = (char *)-1;
if (desc != (char *)-1)
memcpy(desc, &d->descr_str[0], d->descr_len);
name[namelen - 1] = node.sysctl_num;
if (pnode->sysctl_desc != NULL &&
pnode->sysctl_desc != (const char *)-1)
free(__UNCONST(pnode->sysctl_desc));
pnode->sysctl_desc = desc;
}
static void
getdesc(int *name, u_int namelen, struct sysctlnode *pnode)
{
struct sysctlnode *node = pnode->sysctl_child;
struct sysctldesc *d, *p, *plim;
char *desc;
size_t i, sz;
int rc;
sz = 128 * pnode->sysctl_clen;
name[namelen] = CTL_DESCRIBE;
/*
* attempt *twice* to get the description chunk. if two tries
* doesn't work, give up.
*/
i = 0;
do {
d = malloc(sz);
if (d == NULL)
return;
rc = prog_sysctl(name, namelen + 1, d, &sz, NULL, 0);
if (rc == -1) {
free(d);
d = NULL;
if (i == 0 && errno == ENOMEM)
i = 1;
else
return;
}
} while (d == NULL);
/*
* hokey nested loop here, giving O(n**2) behavior, but should
* suffice for now
*/
plim = /*LINTED ptr cast*/(struct sysctldesc *)((char*)d + sz);
for (i = 0; i < pnode->sysctl_clen; i++) {
node = &pnode->sysctl_child[i];
for (p = d; p < plim; p = NEXT_DESCR(p))
if (node->sysctl_num == p->descr_num)
break;
if (p < plim && node->sysctl_ver == p->descr_ver) {
/*
* match found, attempt to attach description
*/
if (p->descr_len == 1)
desc = NULL;
else
desc = malloc(p->descr_len);
if (desc == NULL)
desc = (char *)-1;
else
memcpy(desc, &p->descr_str[0], p->descr_len);
node->sysctl_desc = desc;
}
}
free(d);
}
static void
trim_whitespace(char *s, int dir)
{
char *i, *o;
i = o = s;
if (dir & 1)
while (isspace((unsigned char)*i))
i++;
while ((*o++ = *i++) != '\0');
o -= 2; /* already past nul, skip back to before it */
if (dir & 2)
while (o > s && isspace((unsigned char)*o))
*o-- = '\0';
}
void
sysctlerror(int soft)
{
if (soft) {
switch (errno) {
case ENOENT:
case ENOPROTOOPT:
case ENOTDIR:
case EINVAL:
case EOPNOTSUPP:
case EPROTONOSUPPORT:
if (Aflag || req)
sysctlperror("%s: the value is not available\n",
gsname);
return;
}
}
sysctlperror("%s: sysctl() failed with %s\n",
gsname, strerror(errno));
if (!soft)
EXIT(1);
}
void
sysctlparseerror(u_int namelen, const char *pname)
{
sysctlperror("%s level name '%s' in '%s' is invalid\n",
lname[namelen], gsname, pname);
}
static void
sysctlperror(const char *fmt, ...)
{
va_list ap;
(void)fprintf(warnfp, "%s: ", getprogname());
if (fn)
(void)fprintf(warnfp, "%s#%zu: ", fn, nr);
va_start(ap, fmt);
(void)vfprintf(warnfp, fmt, ap);
va_end(ap);
errs++;
}
/*
* ********************************************************************
* how to write to a "simple" node
* ********************************************************************
*/
static void
write_number(int *name, u_int namelen, struct sysctlnode *node, char *value)
{
u_int ii, io;
u_quad_t qi, qo;
size_t si, so;
bool bi, bo;
int rc;
void *i, *o;
char *t;
if (fn)
trim_whitespace(value, 3);
si = so = 0;
i = o = NULL;
bi = bo = false;
errno = 0;
qi = strtouq(value, &t, 0);
if (qi == UQUAD_MAX && errno == ERANGE) {
sysctlperror("%s: %s\n", value, strerror(errno));
EXIT(1);
}
if (t == value || *t != '\0') {
sysctlperror("%s: not a number\n", value);
EXIT(1);
}
switch (SYSCTL_TYPE(node->sysctl_flags)) {
case CTLTYPE_INT:
ii = (u_int)qi;
io = (u_int)(qi >> 32);
if (io != (u_int)-1 && io != 0) {
sysctlperror("%s: %s\n", value, strerror(ERANGE));
EXIT(1);
}
o = &io;
so = sizeof(io);
i = &ii;
si = sizeof(ii);
break;
case CTLTYPE_BOOL:
bi = (bool)qi;
o = &bo;
so = sizeof(bo);
i = &bi;
si = sizeof(bi);
break;
case CTLTYPE_QUAD:
o = &qo;
so = sizeof(qo);
i = &qi;
si = sizeof(qi);
break;
}
rc = prog_sysctl(name, namelen, o, &so, i, si);
if (rc == -1) {
sysctlerror(0);
return;
}
switch (SYSCTL_TYPE(node->sysctl_flags)) {
case CTLTYPE_INT:
display_number(node, gsname, &io, sizeof(io), DISPLAY_OLD);
display_number(node, gsname, &ii, sizeof(ii), DISPLAY_NEW);
break;
case CTLTYPE_BOOL:
display_number(node, gsname, &bo, sizeof(bo), DISPLAY_OLD);
display_number(node, gsname, &bi, sizeof(bi), DISPLAY_NEW);
break;
case CTLTYPE_QUAD:
display_number(node, gsname, &qo, sizeof(qo), DISPLAY_OLD);
display_number(node, gsname, &qi, sizeof(qi), DISPLAY_NEW);
break;
}
}
static void
write_string(int *name, u_int namelen, struct sysctlnode *node, char *value)
{
char *i, *o;
size_t si, so;
int rc;
i = value;
si = strlen(i) + 1;
so = node->sysctl_size;
if (si > so && so != 0) {
sysctlperror("%s: string too long\n", value);
EXIT(1);
}
o = malloc(so);
if (o == NULL) {
sysctlperror("%s: !malloc failed!\n", gsname);
exit(1);
}
rc = prog_sysctl(name, namelen, o, &so, i, si);
if (rc == -1) {
sysctlerror(0);
return;
}
display_string(node, gsname, o, so, DISPLAY_OLD);
display_string(node, gsname, i, si, DISPLAY_NEW);
free(o);
}
/*
* ********************************************************************
* simple ways to print stuff consistently
* ********************************************************************
*/
static void
display_number(const struct sysctlnode *node, const char *name,
const void *data, size_t sz, int n)
{
u_quad_t q;
bool b;
int i;
if (qflag)
return;
if ((nflag || rflag) && (n == DISPLAY_OLD))
return;
if (rflag && n != DISPLAY_OLD) {
fwrite(data, sz, 1, stdout);
return;
}
if (!nflag) {
if (n == DISPLAY_VALUE)
printf("%s%s", name, eq);
else if (n == DISPLAY_OLD)
printf("%s: ", name);
}
if (xflag > 1) {
if (n != DISPLAY_NEW)
printf("\n");
hex_dump(data, sz);
return;
}
switch (SYSCTL_TYPE(node->sysctl_flags)) {
case CTLTYPE_INT:
memcpy(&i, data, sz);
if (xflag)
printf("0x%0*x", (int)sz * 2, i);
else if (node->sysctl_flags & CTLFLAG_HEX)
printf("%#x", i);
else
printf("%d", i);
break;
case CTLTYPE_BOOL:
memcpy(&b, data, sz);
if (xflag)
printf("0x%0*x", (int)sz * 2, b);
else if (node->sysctl_flags & CTLFLAG_HEX)
printf("%#x", b);
else
printf("%d", b);
break;
case CTLTYPE_QUAD:
memcpy(&q, data, sz);
if (xflag)
printf("0x%0*" PRIx64, (int)sz * 2, q);
else if (node->sysctl_flags & CTLFLAG_HEX)
printf("%#" PRIx64, q);
else
printf("%" PRIu64, q);
break;
}
if (n == DISPLAY_OLD)
printf(" -> ");
else
printf("\n");
}
static void
display_string(const struct sysctlnode *node, const char *name,
const void *data, size_t sz, int n)
{
const unsigned char *buf = data;
int ni;
if (qflag)
return;
if ((nflag || rflag) && (n == DISPLAY_OLD))
return;
if (rflag && n != DISPLAY_OLD) {
fwrite(data, sz, 1, stdout);
return;
}
if (!nflag) {
if (n == DISPLAY_VALUE)
printf("%s%s", name, eq);
else if (n == DISPLAY_OLD)
printf("%s: ", name);
}
if (xflag > 1) {
if (n != DISPLAY_NEW)
printf("\n");
hex_dump(data, sz);
return;
}
if (xflag || node->sysctl_flags & CTLFLAG_HEX) {
for (ni = 0; ni < (int)sz; ni++) {
if (xflag)
printf("%02x", buf[ni]);
if (buf[ni] == '\0')
break;
if (!xflag)
printf("\\x%2.2x", buf[ni]);
}
}
else
printf("%.*s", (int)sz, buf);
if (n == DISPLAY_OLD)
printf(" -> ");
else
printf("\n");
}
/*ARGSUSED*/
static void
display_struct(const struct sysctlnode *node, const char *name,
const void *data, size_t sz, int n)
{
const unsigned char *buf = data;
int ni;
size_t more;
if (qflag)
return;
if (!(xflag || rflag)) {
if (Aflag || req)
sysctlperror(
"%s: this type is unknown to this program\n",
gsname);
return;
}
if ((nflag || rflag) && (n == DISPLAY_OLD))
return;
if (rflag && n != DISPLAY_OLD) {
fwrite(data, sz, 1, stdout);
return;
}
if (!nflag) {
if (n == DISPLAY_VALUE)
printf("%s%s", name, eq);
else if (n == DISPLAY_OLD)
printf("%s: ", name);
}
if (xflag > 1) {
if (n != DISPLAY_NEW)
printf("\n");
hex_dump(data, sz);
return;
}
if (sz > 16) {
more = sz - 16;
sz = 16;
}
else
more = 0;
for (ni = 0; ni < (int)sz; ni++)
printf("%02x", buf[ni]);
if (more)
printf("...(%zu more bytes)", more);
printf("\n");
}
static void
hex_dump(const unsigned char *buf, size_t len)
{
unsigned int i;
int j;
char line[80], tmp[12];
memset(line, ' ', sizeof(line));
for (i = 0, j = 15; i < len; i++) {
j = i % 16;
/* reset line */
if (j == 0) {
line[58] = '|';
line[77] = '|';
line[78] = 0;
snprintf(tmp, sizeof(tmp), "%07x", i);
memcpy(&line[0], tmp, 7);
}
/* copy out hex version of byte */
snprintf(tmp, sizeof(tmp), "%02x", buf[i]);
memcpy(&line[9 + j * 3], tmp, 2);
/* copy out plain version of byte */
line[60 + j] = (isprint(buf[i])) ? buf[i] : '.';
/* print a full line and erase it */
if (j == 15) {
printf("%s\n", line);
memset(line, ' ', sizeof(line));
}
}
if (line[0] != ' ')
printf("%s\n", line);
printf("%07zu bytes\n", len);
}
/*
* ********************************************************************
* functions that handle particular nodes
* ********************************************************************
*/
/*ARGSUSED*/
static void
printother(HANDLER_ARGS)
{
int rc;
void *p;
size_t sz1, sz2;
if (!(Aflag || req) || Mflag)
return;
/*
* okay...you asked for it, so let's give it a go
*/
while (type != CTLTYPE_NODE && (xflag || rflag)) {
rc = prog_sysctl(name, namelen, NULL, &sz1, NULL, 0);
if (rc == -1 || sz1 == 0)
break;
p = malloc(sz1);
if (p == NULL)
break;
sz2 = sz1;
rc = prog_sysctl(name, namelen, p, &sz2, NULL, 0);
if (rc == -1 || sz1 != sz2) {
free(p);
break;
}
display_struct(pnode, gsname, p, sz1, DISPLAY_VALUE);
free(p);
return;
}
/*
* that didn't work...do we have a specific message for this
* thing?
*/
if (v != NULL) {
sysctlperror("%s: use '%s' to view this information\n",
gsname, (const char *)v);
return;
}
/*
* hmm...i wonder if we have any generic hints?
*/
switch (name[0]) {
case CTL_NET:
sysctlperror("%s: use 'netstat' to view this information\n",
sname);
break;
case CTL_DEBUG:
sysctlperror("%s: missing 'options DEBUG' from kernel?\n",
sname);
break;
case CTL_DDB:
sysctlperror("%s: missing 'options DDB' from kernel?\n",
sname);
break;
case CTL_VENDOR:
sysctlperror("%s: no vendor extensions installed\n",
sname);
break;
}
}
/*ARGSUSED*/
static void
kern_clockrate(HANDLER_ARGS)
{
struct clockinfo clkinfo;
size_t sz;
int rc;
sz = sizeof(clkinfo);
rc = prog_sysctl(name, namelen, &clkinfo, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
if (sz != sizeof(clkinfo))
errx(1, "%s: !returned size wrong!", sname);
if (xflag || rflag) {
display_struct(pnode, sname, &clkinfo, sz,
DISPLAY_VALUE);
return;
}
else if (!nflag)
printf("%s: ", sname);
printf("tick = %d, tickadj = %d, hz = %d, profhz = %d, stathz = %d\n",
clkinfo.tick, clkinfo.tickadj,
clkinfo.hz, clkinfo.profhz, clkinfo.stathz);
}
/*ARGSUSED*/
static void
kern_boottime(HANDLER_ARGS)
{
struct timeval timeval;
time_t boottime;
size_t sz;
int rc;
sz = sizeof(timeval);
rc = prog_sysctl(name, namelen, &timeval, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
if (sz != sizeof(timeval))
errx(1, "%s: !returned size wrong!", sname);
boottime = timeval.tv_sec;
if (xflag || rflag)
display_struct(pnode, sname, &timeval, sz,
DISPLAY_VALUE);
else if (!nflag)
/* ctime() provides the \n */
printf("%s%s%s", sname, eq, ctime(&boottime));
else if (nflag == 1)
printf("%ld\n", (long)boottime);
else
printf("%ld.%06ld\n", (long)timeval.tv_sec,
(long)timeval.tv_usec);
}
/*ARGSUSED*/
static void
kern_consdev(HANDLER_ARGS)
{
dev_t cons;
size_t sz;
int rc;
sz = sizeof(cons);
rc = prog_sysctl(name, namelen, &cons, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
if (sz != sizeof(cons))
errx(1, "%s: !returned size wrong!", sname);
if (xflag || rflag)
display_struct(pnode, sname, &cons, sz,
DISPLAY_VALUE);
else {
if (!nflag)
printf("%s%s", sname, eq);
if (nflag < 2 && (sname = devname(cons, S_IFCHR)) != NULL)
printf("%s\n", sname);
else
printf("0x%llx\n", (unsigned long long)cons);
}
}
/*ARGSUSED*/
static void
kern_cp_time(HANDLER_ARGS)
{
u_int64_t *cp_time;
size_t sz, osz;
int rc, i, n;
char s[sizeof("kern.cp_time.nnnnnn")];
const char *tname;
/*
* three things to do here.
* case 1: get sum (no Aflag and namelen == 2)
* case 2: get specific processor (namelen == 3)
* case 3: get all processors (Aflag and namelen == 2)
*/
if (namelen == 2 && Aflag) {
sz = sizeof(n);
rc = sysctlbyname("hw.ncpu", &n, &sz, NULL, 0);
if (rc != 0)
return; /* XXX print an error, eh? */
n++; /* Add on space for the sum. */
sz = n * sizeof(u_int64_t) * CPUSTATES;
}
else {
n = -1; /* Just print one data set. */
sz = sizeof(u_int64_t) * CPUSTATES;
}
cp_time = malloc(sz);
if (cp_time == NULL) {
sysctlerror(1);
return;
}
osz = sz;
rc = prog_sysctl(name, namelen, cp_time + (n != -1) * CPUSTATES, &osz,
NULL, 0);
if (rc == -1) {
sysctlerror(1);
free(cp_time);
return;
}
/*
* Check, but account for space we'll occupy with the sum.
*/
if (osz != sz - (n != -1) * CPUSTATES * sizeof(u_int64_t))
errx(1, "%s: !returned size wrong!", sname);
/*
* Compute the actual sum. Two calls would be easier (we
* could just call ourselves recursively above), but the
* numbers wouldn't add up.
*/
if (n != -1) {
memset(cp_time, 0, sizeof(u_int64_t) * CPUSTATES);
for (i = 1; i < n; i++) {
cp_time[CP_USER] += cp_time[i * CPUSTATES + CP_USER];
cp_time[CP_NICE] += cp_time[i * CPUSTATES + CP_NICE];
cp_time[CP_SYS] += cp_time[i * CPUSTATES + CP_SYS];
cp_time[CP_INTR] += cp_time[i * CPUSTATES + CP_INTR];
cp_time[CP_IDLE] += cp_time[i * CPUSTATES + CP_IDLE];
}
}
tname = sname;
for (i = 0; n == -1 || i < n; i++) {
if (i > 0) {
(void)snprintf(s, sizeof(s), "%s%s%d", sname, sep,
i - 1);
tname = s;
}
if (xflag || rflag)
display_struct(pnode, tname, cp_time + (i * CPUSTATES),
sizeof(u_int64_t) * CPUSTATES,
DISPLAY_VALUE);
else {
if (!nflag)
printf("%s: ", tname);
printf("user = %" PRIu64
", nice = %" PRIu64
", sys = %" PRIu64
", intr = %" PRIu64
", idle = %" PRIu64
"\n",
cp_time[i * CPUSTATES + CP_USER],
cp_time[i * CPUSTATES + CP_NICE],
cp_time[i * CPUSTATES + CP_SYS],
cp_time[i * CPUSTATES + CP_INTR],
cp_time[i * CPUSTATES + CP_IDLE]);
}
/*
* Just printing the one node.
*/
if (n == -1)
break;
}
free(cp_time);
}
/*ARGSUSED*/
static void
kern_drivers(HANDLER_ARGS)
{
struct kinfo_drivers *kd;
size_t sz, i;
int rc;
const char *comma;
rc = prog_sysctl(name, namelen, NULL, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
if (sz % sizeof(*kd))
err(1, "bad size %zu for kern.drivers", sz);
kd = malloc(sz);
if (kd == NULL) {
sysctlerror(1);
return;
}
rc = prog_sysctl(name, namelen, kd, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
comma = "";
if (!nflag)
printf("%s%s", sname, eq);
for (i = 0, sz /= sizeof(*kd); i < sz; i++) {
(void)printf("%s[%d %d %s]", comma, kd[i].d_cmajor,
kd[i].d_bmajor, kd[i].d_name);
comma = ", ";
}
(void)printf("\n");
free(kd);
}
/*ARGSUSED*/
static void
kern_cp_id(HANDLER_ARGS)
{
u_int64_t *cp_id;
size_t sz, osz;
int rc, i, n;
char s[sizeof("kern.cp_id.nnnnnn")];
const char *tname;
struct sysctlnode node = *pnode;
/*
* three things to do here.
* case 1: print a specific cpu id (namelen == 3)
* case 2: print all cpu ids separately (Aflag set)
* case 3: print all cpu ids on one line
*/
if (namelen == 2) {
sz = sizeof(n);
rc = sysctlbyname("hw.ncpu", &n, &sz, NULL, 0);
if (rc != 0)
return; /* XXX print an error, eh? */
sz = n * sizeof(u_int64_t);
}
else {
n = -1; /* Just print one cpu id. */
sz = sizeof(u_int64_t);
}
cp_id = malloc(sz);
if (cp_id == NULL) {
sysctlerror(1);
return;
}
osz = sz;
rc = prog_sysctl(name, namelen, cp_id, &osz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
free(cp_id);
return;
}
/*
* Check that we got back what we asked for.
*/
if (osz != sz)
errx(1, "%s: !returned size wrong!", sname);
/* pretend for output purposes */
node.sysctl_flags = SYSCTL_FLAGS(pnode->sysctl_flags) |
SYSCTL_TYPE(CTLTYPE_QUAD);
tname = sname;
if (namelen == 3)
display_number(&node, tname, cp_id,
sizeof(u_int64_t),
DISPLAY_VALUE);
else if (Aflag) {
for (i = 0; i < n; i++)
(void)snprintf(s, sizeof(s), "%s%s%d", sname, sep, i);
tname = s;
display_number(&node, tname, &cp_id[i],
sizeof(u_int64_t),
DISPLAY_VALUE);
}
else {
if (xflag || rflag)
display_struct(pnode, tname, cp_id, sz, DISPLAY_VALUE);
else {
if (!nflag)
printf("%s: ", tname);
for (i = 0; i < n; i++) {
if (i)
printf(", ");
printf("%d = %" PRIu64, i, cp_id[i]);
}
printf("\n");
}
}
free(cp_id);
}
/*ARGSUSED*/
static void
vm_loadavg(HANDLER_ARGS)
{
struct loadavg loadavg;
size_t sz;
int rc;
sz = sizeof(loadavg);
rc = prog_sysctl(name, namelen, &loadavg, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
if (sz != sizeof(loadavg))
errx(1, "%s: !returned size wrong!", sname);
if (xflag || rflag) {
display_struct(pnode, sname, &loadavg, sz,
DISPLAY_VALUE);
return;
}
if (!nflag)
printf("%s: ", sname);
printf("%.2f %.2f %.2f\n",
(double) loadavg.ldavg[0] / loadavg.fscale,
(double) loadavg.ldavg[1] / loadavg.fscale,
(double) loadavg.ldavg[2] / loadavg.fscale);
}
/*ARGSUSED*/
static void
proc_limit(HANDLER_ARGS)
{
u_quad_t olim, *newp, nlim;
size_t osz, nsz;
char *t;
int rc;
if (fn)
trim_whitespace(value, 3);
osz = sizeof(olim);
if (value != NULL) {
nsz = sizeof(nlim);
newp = &nlim;
if (strcmp(value, "unlimited") == 0)
nlim = RLIM_INFINITY;
else {
errno = 0;
nlim = strtouq(value, &t, 0);
if (t == value || *t != '\0' || errno != 0) {
sysctlperror("%s: '%s' is not a valid limit\n",
sname, value);
EXIT(1);
}
}
}
else {
nsz = 0;
newp = NULL;
}
rc = prog_sysctl(name, namelen, &olim, &osz, newp, nsz);
if (rc == -1) {
sysctlerror(newp == NULL);
return;
}
if (newp && qflag)
return;
if (rflag || xflag || olim != RLIM_INFINITY)
display_number(pnode, sname, &olim, sizeof(olim),
newp ? DISPLAY_OLD : DISPLAY_VALUE);
else
display_string(pnode, sname, "unlimited", 10,
newp ? DISPLAY_OLD : DISPLAY_VALUE);
if (newp) {
if (rflag || xflag || nlim != RLIM_INFINITY)
display_number(pnode, sname, &nlim, sizeof(nlim),
DISPLAY_NEW);
else
display_string(pnode, sname, "unlimited", 10,
DISPLAY_NEW);
}
}
#ifdef CPU_DISKINFO
/*ARGSUSED*/
static void
machdep_diskinfo(HANDLER_ARGS)
{
struct disklist *dl;
struct biosdisk_info *bi;
struct nativedisk_info *ni;
int rc;
size_t sz;
uint i, b, lim;
rc = prog_sysctl(name, namelen, NULL, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
dl = malloc(sz);
if (dl == NULL) {
sysctlerror(1);
return;
}
rc = prog_sysctl(name, namelen, dl, &sz, NULL, 0);
if (rc == -1) {
sysctlerror(1);
return;
}
if (!nflag)
printf("%s: ", sname);
lim = dl->dl_nbiosdisks;
if (lim > MAX_BIOSDISKS)
lim = MAX_BIOSDISKS;
for (bi = dl->dl_biosdisks, i = 0; i < lim; bi++, i++)
printf("%x:%" PRIu64 "(%d/%d/%d),%x ",
bi->bi_dev, bi->bi_lbasecs,
bi->bi_cyl, bi->bi_head, bi->bi_sec,
bi->bi_flags);
lim = dl->dl_nnativedisks;
ni = dl->dl_nativedisks;
bi = dl->dl_biosdisks;
/* LINTED -- pointer casts are tedious */
if ((char *)&ni[lim] != (char *)dl + sz) {
sysctlperror("%s: size mismatch\n", gsname);
return;
}
for (i = 0; i < lim; ni++, i++) {
char t = ':';
printf(" %.*s", (int)sizeof ni->ni_devname,
ni->ni_devname);
for (b = 0; b < (unsigned int)ni->ni_nmatches; t = ',', b++)
printf("%c%x", t,
bi[ni->ni_biosmatches[b]].bi_dev);
}
printf("\n");
free(dl);
}
#endif /* CPU_DISKINFO */
/*ARGSUSED*/
static void
mode_bits(HANDLER_ARGS)
{
char buf[12], outbuf[100];
int o, m, *newp, rc;
size_t osz, nsz;
mode_t om, mm;
if (fn)
trim_whitespace(value, 3);
newp = NULL;
osz = sizeof(o);
if (value != NULL) {
void *foo;
int tt;
size_t ttsz = sizeof(tt);
mode_t old_umask;
nsz = sizeof(m);
newp = &m;
errno = 0;
rc = prog_sysctl(name, namelen, &tt, &ttsz, NULL, 0);
if (rc == -1) {
sysctlperror("%s: failed query\n", sname);
return;
}
old_umask = umask(0);
foo = setmode(value);
umask(old_umask);
if (foo == NULL) {
sysctlperror("%s: '%s' is an invalid mode\n", sname,
value);
EXIT(1);
}
old_umask = umask(0);
m = getmode(foo, (mode_t)tt);
umask(old_umask);
if (errno) {
sysctlperror("%s: '%s' is an invalid mode\n", sname,
value);
EXIT(1);
}
}
else {
nsz = 0;
newp = NULL;
}
rc = prog_sysctl(name, namelen, &o, &osz, newp, nsz);
if (rc == -1) {
sysctlerror(newp == NULL);
return;
}
if (newp && qflag)
return;
om = (mode_t)o;
mm = (mode_t)m;
if (rflag || xflag)
display_number(pnode, sname, &o, sizeof(o),
newp ? DISPLAY_OLD : DISPLAY_VALUE);
else {
memset(buf, 0, sizeof(buf));
strmode(om, buf);
rc = snprintf(outbuf, sizeof(outbuf), "%04o (%s)", om, buf + 1);
display_string(pnode, sname, outbuf, rc, newp ? DISPLAY_OLD : DISPLAY_VALUE);
}
if (newp) {
if (rflag || xflag)
display_number(pnode, sname, &m, sizeof(m),
DISPLAY_NEW);
else {
memset(buf, 0, sizeof(buf));
strmode(mm, buf);
rc = snprintf(outbuf, sizeof(outbuf), "%04o (%s)", mm, buf + 1);
display_string(pnode, sname, outbuf, rc, DISPLAY_NEW);
}
}
}
Reference in New Issue View Git Blame Copy Permalink