blob: 03e98c195a2e1cf6d77eb25697acb7017f2c1af5 [file] [log] [blame]
/*
* Copyright (c) 1999 Ulrich Drepper <drepper@cygnus.com>
* Copyright (c) 2005 Roland McGrath <roland@redhat.com>
* Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "defs.h"
#include <linux/sysctl.h>
#include "xlat/sysctl_root.h"
#include "xlat/sysctl_kern.h"
#include "xlat/sysctl_vm.h"
#include "xlat/sysctl_net.h"
#include "xlat/sysctl_net_core.h"
#include "xlat/sysctl_net_unix.h"
#include "xlat/sysctl_net_ipv4.h"
#include "xlat/sysctl_net_ipv4_route.h"
#include "xlat/sysctl_net_ipv4_conf.h"
#include "xlat/sysctl_net_ipv6.h"
#include "xlat/sysctl_net_ipv6_route.h"
SYS_FUNC(sysctl)
{
struct __sysctl_args info;
int *name;
unsigned long size;
if (umove_or_printaddr(tcp, tcp->u_arg[0], &info))
return RVAL_DECODED;
size = sizeof(int) * (unsigned long) info.nlen;
name = (size / sizeof(int) != (unsigned long) info.nlen) ? NULL : malloc(size);
if (name == NULL ||
umoven(tcp, (unsigned long) info.name, size, name) < 0) {
free(name);
if (entering(tcp))
tprintf("{%p, %d, %p, %p, %p, %lu}",
info.name, info.nlen, info.oldval,
info.oldlenp, info.newval, (unsigned long)info.newlen);
return RVAL_DECODED;
}
if (entering(tcp)) {
unsigned int cnt = 0, max_cnt;
tprints("{{");
if (info.nlen == 0)
goto out;
printxval(sysctl_root, name[0], "CTL_???");
++cnt;
if (info.nlen == 1)
goto out;
switch (name[0]) {
case CTL_KERN:
tprints(", ");
printxval(sysctl_kern, name[1], "KERN_???");
++cnt;
break;
case CTL_VM:
tprints(", ");
printxval(sysctl_vm, name[1], "VM_???");
++cnt;
break;
case CTL_NET:
tprints(", ");
printxval(sysctl_net, name[1], "NET_???");
++cnt;
if (info.nlen == 2)
goto out;
switch (name[1]) {
case NET_CORE:
tprints(", ");
printxval(sysctl_net_core, name[2],
"NET_CORE_???");
break;
case NET_UNIX:
tprints(", ");
printxval(sysctl_net_unix, name[2],
"NET_UNIX_???");
break;
case NET_IPV4:
tprints(", ");
printxval(sysctl_net_ipv4, name[2],
"NET_IPV4_???");
if (info.nlen == 3)
goto out;
switch (name[2]) {
case NET_IPV4_ROUTE:
tprints(", ");
printxval(sysctl_net_ipv4_route,
name[3],
"NET_IPV4_ROUTE_???");
break;
case NET_IPV4_CONF:
tprints(", ");
printxval(sysctl_net_ipv4_conf,
name[3],
"NET_IPV4_CONF_???");
break;
default:
goto out;
}
break;
case NET_IPV6:
tprints(", ");
printxval(sysctl_net_ipv6, name[2],
"NET_IPV6_???");
if (info.nlen == 3)
goto out;
switch (name[2]) {
case NET_IPV6_ROUTE:
tprints(", ");
printxval(sysctl_net_ipv6_route,
name[3],
"NET_IPV6_ROUTE_???");
break;
default:
goto out;
}
break;
default:
goto out;
}
break;
default:
goto out;
}
out:
max_cnt = info.nlen;
if (abbrev(tcp) && max_cnt > max_strlen)
max_cnt = max_strlen;
while (cnt < max_cnt)
tprintf(", %x", name[cnt++]);
if (cnt < (unsigned) info.nlen)
tprints(", ...");
tprintf("}, %d, ", info.nlen);
} else {
size_t oldlen = 0;
if (info.oldval == NULL) {
tprints("NULL");
} else if (umove(tcp, (long)info.oldlenp, &oldlen) >= 0
&& info.nlen >= 2
&& ((name[0] == CTL_KERN
&& (name[1] == KERN_OSRELEASE
|| name[1] == KERN_OSTYPE
)))) {
printpath(tcp, (size_t)info.oldval);
} else {
tprintf("%p", info.oldval);
}
tprintf(", %lu, ", (unsigned long)oldlen);
if (info.newval == NULL)
tprints("NULL");
else if (syserror(tcp))
tprintf("%p", info.newval);
else
printpath(tcp, (size_t)info.newval);
tprintf(", %lu", (unsigned long)info.newlen);
}
free(name);
return 0;
}