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strace/system.c
Dmitry V. Levin 6dbbe0737a sysctl: update CTL_*, KERN_*, NET_*, and VM_* constants 
* configure.ac (AC_CHECK_DECLS): Add CTL_*, KERN_*, NET_*, and
VM_* constants.
* system.c (CTL_PROC, CTL_CPU): Remove definitions.
* xlat/sysctl_*.in: Update.
2014-05-30 22:10:21 +00:00

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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
* Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
* Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
* 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"
#define _LINUX_SOCKET_H
#define _LINUX_FS_H
#define MS_RDONLY 1 /* Mount read-only */
#define MS_NOSUID 2 /* Ignore suid and sgid bits */
#define MS_NODEV 4 /* Disallow access to device special files */
#define MS_NOEXEC 8 /* Disallow program execution */
#define MS_SYNCHRONOUS 16 /* Writes are synced at once */
#define MS_REMOUNT 32 /* Alter flags of a mounted FS */
#define MS_MANDLOCK 64 /* Allow mandatory locks on an FS */
#define MS_DIRSYNC 128 /* Directory modifications are synchronous */
#define MS_NOATIME 1024 /* Do not update access times. */
#define MS_NODIRATIME 2048 /* Do not update directory access times */
#define MS_BIND 4096
#define MS_MOVE 8192
#define MS_REC 16384
#define MS_SILENT 32768
#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
#define MS_UNBINDABLE (1<<17) /* change to unbindable */
#define MS_PRIVATE (1<<18) /* change to private */
#define MS_SLAVE (1<<19) /* change to slave */
#define MS_SHARED (1<<20) /* change to shared */
#define MS_RELATIME (1<<21)
#define MS_KERNMOUNT (1<<22)
#define MS_I_VERSION (1<<23)
#define MS_STRICTATIME (1<<24)
#define MS_NOSEC (1<<28)
#define MS_BORN (1<<29)
#define MS_ACTIVE (1<<30)
#define MS_NOUSER (1<<31)
#define MS_MGC_VAL 0xc0ed0000 /* Magic flag number */
#define MS_MGC_MSK 0xffff0000 /* Magic flag mask */
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifdef HAVE_LINUX_CAPABILITY_H
# include <linux/capability.h>
#endif
#ifdef HAVE_ASM_CACHECTL_H
# include <asm/cachectl.h>
#endif
#ifdef HAVE_LINUX_USTNAME_H
# include <linux/utsname.h>
#endif
#ifdef HAVE_ASM_SYSMIPS_H
# include <asm/sysmips.h>
#endif
#include <linux/sysctl.h>
#include <linux/personality.h>
#include "xlat/mount_flags.h"
int
sys_mount(struct tcb *tcp)
{
if (entering(tcp)) {
int ignore_type = 0, ignore_data = 0;
unsigned long flags = tcp->u_arg[3];
/* Discard magic */
if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
flags &= ~MS_MGC_MSK;
if (flags & MS_REMOUNT)
ignore_type = 1;
else if (flags & (MS_BIND | MS_MOVE))
ignore_type = ignore_data = 1;
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
printpath(tcp, tcp->u_arg[1]);
tprints(", ");
if (ignore_type && tcp->u_arg[2])
tprintf("%#lx", tcp->u_arg[2]);
else
printstr(tcp, tcp->u_arg[2], -1);
tprints(", ");
printflags(mount_flags, tcp->u_arg[3], "MS_???");
tprints(", ");
if (ignore_data && tcp->u_arg[4])
tprintf("%#lx", tcp->u_arg[4]);
else
printstr(tcp, tcp->u_arg[4], -1);
}
return 0;
}
#define MNT_FORCE 0x00000001 /* Attempt to forcibily umount */
#define MNT_DETACH 0x00000002 /* Just detach from the tree */
#define MNT_EXPIRE 0x00000004 /* Mark for expiry */
#include "xlat/umount_flags.h"
int
sys_umount2(struct tcb *tcp)
{
if (entering(tcp)) {
printstr(tcp, tcp->u_arg[0], -1);
tprints(", ");
printflags(umount_flags, tcp->u_arg[1], "MNT_???");
}
return 0;
}
/* These are not macros, but enums. We just copy the values by hand
from Linux 2.6.9 here. */
#include "xlat/personality_options.h"
int
sys_personality(struct tcb *tcp)
{
if (entering(tcp))
printxval(personality_options, tcp->u_arg[0], "PER_???");
return 0;
}
enum {
SYSLOG_ACTION_CLOSE = 0,
SYSLOG_ACTION_OPEN,
SYSLOG_ACTION_READ,
SYSLOG_ACTION_READ_ALL,
SYSLOG_ACTION_READ_CLEAR,
SYSLOG_ACTION_CLEAR,
SYSLOG_ACTION_CONSOLE_OFF,
SYSLOG_ACTION_CONSOLE_ON,
SYSLOG_ACTION_CONSOLE_LEVEL,
SYSLOG_ACTION_SIZE_UNREAD,
SYSLOG_ACTION_SIZE_BUFFER
};
#include "xlat/syslog_action_type.h"
int
sys_syslog(struct tcb *tcp)
{
int type = tcp->u_arg[0];
if (entering(tcp)) {
/* type */
printxval(syslog_action_type, type, "SYSLOG_ACTION_???");
tprints(", ");
}
switch (type) {
case SYSLOG_ACTION_READ:
case SYSLOG_ACTION_READ_ALL:
case SYSLOG_ACTION_READ_CLEAR:
if (entering(tcp))
return 0;
break;
default:
if (entering(tcp)) {
tprintf("%#lx, %lu",
tcp->u_arg[1], tcp->u_arg[2]);
}
return 0;
}
/* bufp */
if (syserror(tcp))
tprintf("%#lx", tcp->u_arg[1]);
else
printstr(tcp, tcp->u_arg[1], tcp->u_rval);
/* len */
tprintf(", %d", (int) tcp->u_arg[2]);
return 0;
}
#ifdef M68K
#include "xlat/cacheflush_scope.h"
static const struct xlat cacheflush_flags[] = {
#ifdef FLUSH_CACHE_BOTH
XLAT(FLUSH_CACHE_BOTH),
#endif
#ifdef FLUSH_CACHE_DATA
XLAT(FLUSH_CACHE_DATA),
#endif
#ifdef FLUSH_CACHE_INSN
XLAT(FLUSH_CACHE_INSN),
#endif
XLAT_END
};
int
sys_cacheflush(struct tcb *tcp)
{
if (entering(tcp)) {
/* addr */
tprintf("%#lx, ", tcp->u_arg[0]);
/* scope */
printxval(cacheflush_scope, tcp->u_arg[1], "FLUSH_SCOPE_???");
tprints(", ");
/* flags */
printflags(cacheflush_flags, tcp->u_arg[2], "FLUSH_CACHE_???");
/* len */
tprintf(", %lu", tcp->u_arg[3]);
}
return 0;
}
#endif /* M68K */
#ifdef BFIN
#include <bfin_sram.h>
#include "xlat/sram_alloc_flags.h"
int
sys_sram_alloc(struct tcb *tcp)
{
if (entering(tcp)) {
/* size */
tprintf("%lu, ", tcp->u_arg[0]);
/* flags */
printflags(sram_alloc_flags, tcp->u_arg[1], "???_SRAM");
}
return 1;
}
#include <asm/cachectl.h>
static const struct xlat cacheflush_flags[] = {
XLAT(ICACHE),
XLAT(DCACHE),
XLAT(BCACHE),
XLAT_END
};
int
sys_cacheflush(struct tcb *tcp)
{
if (entering(tcp)) {
/* start addr */
tprintf("%#lx, ", tcp->u_arg[0]);
/* length */
tprintf("%ld, ", tcp->u_arg[1]);
/* flags */
printxval(cacheflush_flags, tcp->u_arg[1], "?CACHE");
}
return 0;
}
#endif
#ifdef SH
static const struct xlat cacheflush_flags[] = {
#ifdef CACHEFLUSH_D_INVAL
XLAT(CACHEFLUSH_D_INVAL),
#endif
#ifdef CACHEFLUSH_D_WB
XLAT(CACHEFLUSH_D_WB),
#endif
#ifdef CACHEFLUSH_D_PURGE
XLAT(CACHEFLUSH_D_PURGE),
#endif
#ifdef CACHEFLUSH_I
XLAT(CACHEFLUSH_I),
#endif
XLAT_END
};
int
sys_cacheflush(struct tcb *tcp)
{
if (entering(tcp)) {
/* addr */
tprintf("%#lx, ", tcp->u_arg[0]);
/* len */
tprintf("%lu, ", tcp->u_arg[1]);
/* flags */
printflags(cacheflush_flags, tcp->u_arg[2], "CACHEFLUSH_???");
}
return 0;
}
#endif /* SH */
#ifdef SYS_capget
#include "xlat/capabilities.h"
#ifndef _LINUX_CAPABILITY_VERSION_1
# define _LINUX_CAPABILITY_VERSION_1 0x19980330
#endif
#ifndef _LINUX_CAPABILITY_VERSION_2
# define _LINUX_CAPABILITY_VERSION_2 0x20071026
#endif
#ifndef _LINUX_CAPABILITY_VERSION_3
# define _LINUX_CAPABILITY_VERSION_3 0x20080522
#endif
#include "xlat/cap_version.h"
static void
print_cap_header(struct tcb *tcp, unsigned long addr)
{
union { cap_user_header_t p; long *a; char *c; } arg;
long a[sizeof(*arg.p) / sizeof(long) + 1];
arg.a = a;
if (!addr)
tprints("NULL");
else if (!verbose(tcp) ||
umoven(tcp, addr, sizeof(*arg.p), arg.c) < 0)
tprintf("%#lx", addr);
else {
tprints("{");
printxval(cap_version, arg.p->version,
"_LINUX_CAPABILITY_VERSION_???");
tprintf(", %d}", arg.p->pid);
}
}
static void
print_cap_data(struct tcb *tcp, unsigned long addr)
{
union { cap_user_data_t p; long *a; char *c; } arg;
long a[sizeof(*arg.p) / sizeof(long) + 1];
arg.a = a;
if (!addr)
tprints("NULL");
else if (!verbose(tcp) ||
(exiting(tcp) && syserror(tcp)) ||
umoven(tcp, addr, sizeof(*arg.p), arg.c) < 0)
tprintf("%#lx", addr);
else {
tprints("{");
printflags(capabilities, arg.p->effective, "CAP_???");
tprints(", ");
printflags(capabilities, arg.p->permitted, "CAP_???");
tprints(", ");
printflags(capabilities, arg.p->inheritable, "CAP_???");
tprints("}");
}
}
int
sys_capget(struct tcb *tcp)
{
if (entering(tcp)) {
print_cap_header(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
print_cap_data(tcp, tcp->u_arg[1]);
}
return 0;
}
int
sys_capset(struct tcb *tcp)
{
if (entering(tcp)) {
print_cap_header(tcp, tcp->u_arg[0]);
tprints(", ");
print_cap_data(tcp, tcp->u_arg[1]);
}
return 0;
}
#else
int sys_capget(struct tcb *tcp)
{
return printargs(tcp);
}
int sys_capset(struct tcb *tcp)
{
return printargs(tcp);
}
#endif
#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"
int
sys_sysctl(struct tcb *tcp)
{
struct __sysctl_args info;
int *name;
unsigned long size;
if (umove(tcp, tcp->u_arg[0], &info) < 0)
return printargs(tcp);
size = sizeof(int) * (unsigned long) info.nlen;
name = (size / sizeof(int) != info.nlen) ? NULL : malloc(size);
if (name == NULL ||
umoven(tcp, (unsigned long) info.name, size, (char *) 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 0;
}
if (entering(tcp)) {
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 < 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
#ifdef KERN_JAVA_INTERPRETER
|| name[1] == KERN_JAVA_INTERPRETER
#endif
#ifdef KERN_JAVA_APPLETVIEWER
|| name[1] == KERN_JAVA_APPLETVIEWER
#endif
)))) {
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;
}
#ifdef MIPS
#ifndef __NEW_UTS_LEN
#define __NEW_UTS_LEN 64
#endif
#include "xlat/sysmips_operations.h"
int sys_sysmips(struct tcb *tcp)
{
if (entering(tcp)) {
printxval(sysmips_operations, tcp->u_arg[0], "???");
if (!verbose(tcp)) {
tprintf("%ld, %ld, %ld", tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
} else if (tcp->u_arg[0] == SETNAME) {
char nodename[__NEW_UTS_LEN + 1];
if (umovestr(tcp, tcp->u_arg[1], (__NEW_UTS_LEN + 1), nodename) < 0)
tprintf(", %#lx", tcp->u_arg[1]);
else
tprintf(", \"%.*s\"", (int)(__NEW_UTS_LEN + 1), nodename);
} else if (tcp->u_arg[0] == MIPS_ATOMIC_SET) {
tprintf(", %#lx, 0x%lx", tcp->u_arg[1], tcp->u_arg[2]);
} else if (tcp->u_arg[0] == MIPS_FIXADE) {
tprintf(", 0x%lx", tcp->u_arg[1]);
} else {
tprintf("%ld, %ld, %ld", tcp->u_arg[1], tcp->u_arg[2], tcp->u_arg[3]);
}
}
return 0;
}
#endif /* MIPS */
#ifdef OR1K
#define OR1K_ATOMIC_SWAP 1
#define OR1K_ATOMIC_CMPXCHG 2
#define OR1K_ATOMIC_XCHG 3
#define OR1K_ATOMIC_ADD 4
#define OR1K_ATOMIC_DECPOS 5
#define OR1K_ATOMIC_AND 6
#define OR1K_ATOMIC_OR 7
#define OR1K_ATOMIC_UMAX 8
#define OR1K_ATOMIC_UMIN 9
#include "xlat/atomic_ops.h"
int sys_or1k_atomic(struct tcb *tcp)
{
if (entering(tcp)) {
printxval(atomic_ops, tcp->u_arg[0], "???");
switch(tcp->u_arg[0]) {
case OR1K_ATOMIC_SWAP:
tprintf(", 0x%lx, 0x%lx", tcp->u_arg[1], tcp->u_arg[2]);
break;
case OR1K_ATOMIC_CMPXCHG:
tprintf(", 0x%lx, %#lx, %#lx", tcp->u_arg[1], tcp->u_arg[2],
tcp->u_arg[3]);
break;
case OR1K_ATOMIC_XCHG:
case OR1K_ATOMIC_ADD:
case OR1K_ATOMIC_AND:
case OR1K_ATOMIC_OR:
case OR1K_ATOMIC_UMAX:
case OR1K_ATOMIC_UMIN:
tprintf(", 0x%lx, %#lx", tcp->u_arg[1], tcp->u_arg[2]);
break;
case OR1K_ATOMIC_DECPOS:
tprintf(", 0x%lx", tcp->u_arg[1]);
break;
default:
break;
}
}
return RVAL_HEX;
}
#endif /* OR1K */
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