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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"
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/resource.h>
#include <sys/utsname.h>
#include <sys/user.h>
/* Bits of module.flags. */
#define MOD_UNINITIALIZED 0
#define MOD_RUNNING 1
#define MOD_DELETED 2
#define MOD_AUTOCLEAN 4
#define MOD_VISITED 8
#define MOD_USED_ONCE 16
#define MOD_JUST_FREED 32
#define MOD_INITIALIZING 64
/* Values for query_module's which. */
#define QM_MODULES 1
#define QM_DEPS 2
#define QM_REFS 3
#define QM_SYMBOLS 4
#define QM_INFO 5
struct module_symbol
{
unsigned long value;
const char *name;
};
struct module_info
{
unsigned long addr;
unsigned long size;
unsigned long flags;
long usecount;
};
static const struct xlat which[] = {
XLAT(0),
XLAT(QM_MODULES),
XLAT(QM_DEPS),
XLAT(QM_REFS),
XLAT(QM_SYMBOLS),
XLAT(QM_INFO),
XLAT_END
};
static const struct xlat modflags[] = {
XLAT(MOD_UNINITIALIZED),
XLAT(MOD_RUNNING),
XLAT(MOD_DELETED),
XLAT(MOD_AUTOCLEAN),
XLAT(MOD_VISITED),
XLAT(MOD_USED_ONCE),
XLAT(MOD_JUST_FREED),
XLAT_END
};
int
sys_query_module(struct tcb *tcp)
{
if (entering(tcp)) {
printstr(tcp, tcp->u_arg[0], -1);
tprints(", ");
printxval(which, tcp->u_arg[1], "QM_???");
tprints(", ");
} else {
size_t ret;
if (!verbose(tcp) || syserror(tcp) ||
umove(tcp, tcp->u_arg[4], &ret) < 0) {
tprintf("%#lx, %lu, %#lx", tcp->u_arg[2],
tcp->u_arg[3], tcp->u_arg[4]);
} else if (tcp->u_arg[1]==QM_INFO) {
struct module_info mi;
if (umove(tcp, tcp->u_arg[2], &mi) < 0) {
tprintf("%#lx, ", tcp->u_arg[2]);
} else {
tprintf("{address=%#lx, size=%lu, flags=",
mi.addr, mi.size);
printflags(modflags, mi.flags, "MOD_???");
tprintf(", usecount=%lu}, ", mi.usecount);
}
tprintf("%lu", (unsigned long)ret);
} else if ((tcp->u_arg[1]==QM_MODULES) ||
(tcp->u_arg[1]==QM_DEPS) ||
(tcp->u_arg[1]==QM_REFS)) {
tprints("{");
if (!abbrev(tcp)) {
char* data = malloc(tcp->u_arg[3]);
char* mod = data;
size_t idx;
if (!data) {
fprintf(stderr, "out of memory\n");
tprintf(" /* %lu entries */ ", (unsigned long)ret);
} else {
if (umoven(tcp, tcp->u_arg[2],
tcp->u_arg[3], data) < 0) {
tprintf(" /* %lu entries */ ", (unsigned long)ret);
} else {
for (idx = 0; idx < ret; idx++) {
tprintf("%s%s",
(idx ? ", " : ""),
mod);
mod += strlen(mod)+1;
}
}
free(data);
}
} else
tprintf(" /* %lu entries */ ", (unsigned long)ret);
tprintf("}, %lu", (unsigned long)ret);
} else if (tcp->u_arg[1]==QM_SYMBOLS) {
tprints("{");
if (!abbrev(tcp)) {
char* data = malloc(tcp->u_arg[3]);
struct module_symbol* sym = (struct module_symbol*)data;
size_t idx;
if (!data) {
fprintf(stderr, "out of memory\n");
tprintf(" /* %lu entries */ ", (unsigned long)ret);
} else {
if (umoven(tcp, tcp->u_arg[2],
tcp->u_arg[3], data) < 0) {
tprintf(" /* %lu entries */ ", (unsigned long)ret);
} else {
for (idx = 0; idx < ret; idx++) {
tprintf("%s{name=%s, value=%lu}",
(idx ? " " : ""),
data+(long)sym->name,
sym->value);
sym++;
}
}
free(data);
}
} else
tprintf(" /* %lu entries */ ", (unsigned long)ret);
tprintf("}, %ld", (unsigned long)ret);
} else {
printstr(tcp, tcp->u_arg[2], tcp->u_arg[3]);
tprintf(", %#lx", tcp->u_arg[4]);
}
}
return 0;
}
int
sys_create_module(struct tcb *tcp)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
tprintf(", %lu", tcp->u_arg[1]);
}
return RVAL_HEX;
}
int
sys_init_module(struct tcb *tcp)
{
if (entering(tcp)) {
tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
printstr(tcp, tcp->u_arg[2], -1);
}
return 0;
}
#define MODULE_INIT_IGNORE_MODVERSIONS 1
#define MODULE_INIT_IGNORE_VERMAGIC 2
static const struct xlat module_init_flags[] = {
XLAT(MODULE_INIT_IGNORE_MODVERSIONS),
XLAT(MODULE_INIT_IGNORE_VERMAGIC),
XLAT_END
};
int
sys_finit_module(struct tcb *tcp)
{
if (exiting(tcp))
return 0;
/* file descriptor */
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
/* param_values */
printstr(tcp, tcp->u_arg[1], -1);
tprints(", ");
/* flags */
printflags(module_init_flags, tcp->u_arg[2], "MODULE_INIT_???");
return 0;
}
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