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gerrit-public.fairphone.software / fp2-dev / platform / external / valgrind / f4ef18297bd98b5dec6c0f016879649002813433 / . / coregrind / m_syswrap / syswrap-linux.c
blob: 90920204f89809cdd1de7d6b412310400795dc76 [file] [log] [blame]
/*--------------------------------------------------------------------*/
/*--- Linux-specific syscalls, etc. syswrap-linux.c ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2005 Nicholas Nethercote
njn@valgrind.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#include "pub_core_basics.h"
#include "pub_core_threadstate.h"
#include "pub_core_debuginfo.h" // Needed for pub_core_aspacemgr :(
#include "pub_core_aspacemgr.h"
#include "pub_core_debuglog.h"
#include "pub_core_libcbase.h"
#include "pub_core_libcassert.h"
#include "pub_core_libcfile.h"
#include "pub_core_libcprint.h"
#include "pub_core_libcproc.h"
#include "pub_core_mallocfree.h"
#include "pub_core_tooliface.h"
#include "pub_core_options.h"
#include "pub_core_scheduler.h"
#include "pub_core_signals.h"
#include "pub_core_syscall.h"
#include "priv_types_n_macros.h"
#include "priv_syswrap-generic.h"
#include "priv_syswrap-linux.h"
// Run a thread from beginning to end and return the thread's
// scheduler-return-code.
VgSchedReturnCode ML_(thread_wrapper)(Word /*ThreadId*/ tidW)
{
VG_(debugLog)(1, "core_os",
"ML_(thread_wrapper)(tid=%lld): entry\n",
(ULong)tidW);
VgSchedReturnCode ret;
ThreadId tid = (ThreadId)tidW;
ThreadState* tst = VG_(get_ThreadState)(tid);
vg_assert(tst->status == VgTs_Init);
/* make sure we get the CPU lock before doing anything significant */
VG_(set_running)(tid);
if (0)
VG_(printf)("thread tid %d started: stack = %p\n",
tid, &tid);
VG_TRACK ( post_thread_create, tst->os_state.parent, tid );
tst->os_state.lwpid = VG_(gettid)();
tst->os_state.threadgroup = VG_(getpid)();
/* Thread created with all signals blocked; scheduler will set the
appropriate mask */
ret = VG_(scheduler)(tid);
vg_assert(VG_(is_exiting)(tid));
vg_assert(tst->status == VgTs_Runnable);
vg_assert(VG_(is_running_thread)(tid));
VG_(debugLog)(1, "core_os",
"ML_(thread_wrapper)(tid=%lld): done\n",
(ULong)tidW);
/* Return to caller, still holding the lock. */
return ret;
}
/* ---------------------------------------------------------------------
PRE/POST wrappers for arch-generic, Linux-specific syscalls
------------------------------------------------------------------ */
// Nb: See the comment above the generic PRE/POST wrappers in
// m_syswrap/syswrap-generic.c for notes about how they work.
#define PRE(name) DEFN_PRE_TEMPLATE(linux, name)
#define POST(name) DEFN_POST_TEMPLATE(linux, name)
// Combine two 32-bit values into a 64-bit value
#define LOHI64(lo,hi) ( (lo) | ((ULong)(hi) << 32) )
/* ---------------------------------------------------------------------
*mount wrappers
------------------------------------------------------------------ */
PRE(sys_mount)
{
// Nb: depending on 'flags', the 'type' and 'data' args may be ignored.
// We are conservative and check everything, except the memory pointed to
// by 'data'.
*flags |= SfMayBlock;
PRINT( "sys_mount( %p, %p, %p, %p, %p )" ,ARG1,ARG2,ARG3,ARG4,ARG5);
PRE_REG_READ5(long, "mount",
char *, source, char *, target, char *, type,
unsigned long, flags, void *, data);
PRE_MEM_RASCIIZ( "mount(source)", ARG1);
PRE_MEM_RASCIIZ( "mount(target)", ARG2);
PRE_MEM_RASCIIZ( "mount(type)", ARG3);
}
PRE(sys_oldumount)
{
PRINT("sys_oldumount( %p )", ARG1);
PRE_REG_READ1(long, "umount", char *, path);
PRE_MEM_RASCIIZ( "umount(path)", ARG1);
}
PRE(sys_umount)
{
PRINT("sys_umount( %p, %d )", ARG1, ARG2);
PRE_REG_READ2(long, "umount2", char *, path, int, flags);
PRE_MEM_RASCIIZ( "umount2(path)", ARG1);
}
/* ---------------------------------------------------------------------
16- and 32-bit uid/gid wrappers
------------------------------------------------------------------ */
PRE(sys_setfsuid16)
{
PRINT("sys_setfsuid16 ( %d )", ARG1);
PRE_REG_READ1(long, "setfsuid16", vki_old_uid_t, uid);
}
PRE(sys_setfsuid)
{
PRINT("sys_setfsuid ( %d )", ARG1);
PRE_REG_READ1(long, "setfsuid", vki_uid_t, uid);
}
PRE(sys_setfsgid16)
{
PRINT("sys_setfsgid16 ( %d )", ARG1);
PRE_REG_READ1(long, "setfsgid16", vki_old_gid_t, gid);
}
PRE(sys_setfsgid)
{
PRINT("sys_setfsgid ( %d )", ARG1);
PRE_REG_READ1(long, "setfsgid", vki_gid_t, gid);
}
PRE(sys_setresuid16)
{
PRINT("sys_setresuid16 ( %d, %d, %d )", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "setresuid16",
vki_old_uid_t, ruid, vki_old_uid_t, euid, vki_old_uid_t, suid);
}
PRE(sys_setresuid)
{
PRINT("sys_setresuid ( %d, %d, %d )", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "setresuid",
vki_uid_t, ruid, vki_uid_t, euid, vki_uid_t, suid);
}
PRE(sys_getresuid16)
{
PRINT("sys_getresuid16 ( %p, %p, %p )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "getresuid16",
vki_old_uid_t *, ruid, vki_old_uid_t *, euid,
vki_old_uid_t *, suid);
PRE_MEM_WRITE( "getresuid16(ruid)", ARG1, sizeof(vki_old_uid_t) );
PRE_MEM_WRITE( "getresuid16(euid)", ARG2, sizeof(vki_old_uid_t) );
PRE_MEM_WRITE( "getresuid16(suid)", ARG3, sizeof(vki_old_uid_t) );
}
POST(sys_getresuid16)
{
vg_assert(SUCCESS);
if (RES == 0) {
POST_MEM_WRITE( ARG1, sizeof(vki_old_uid_t) );
POST_MEM_WRITE( ARG2, sizeof(vki_old_uid_t) );
POST_MEM_WRITE( ARG3, sizeof(vki_old_uid_t) );
}
}
PRE(sys_getresuid)
{
PRINT("sys_getresuid ( %p, %p, %p )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "getresuid",
vki_uid_t *, ruid, vki_uid_t *, euid, vki_uid_t *, suid);
PRE_MEM_WRITE( "getresuid(ruid)", ARG1, sizeof(vki_uid_t) );
PRE_MEM_WRITE( "getresuid(euid)", ARG2, sizeof(vki_uid_t) );
PRE_MEM_WRITE( "getresuid(suid)", ARG3, sizeof(vki_uid_t) );
}
POST(sys_getresuid)
{
vg_assert(SUCCESS);
if (RES == 0) {
POST_MEM_WRITE( ARG1, sizeof(vki_uid_t) );
POST_MEM_WRITE( ARG2, sizeof(vki_uid_t) );
POST_MEM_WRITE( ARG3, sizeof(vki_uid_t) );
}
}
PRE(sys_setresgid16)
{
PRINT("sys_setresgid16 ( %d, %d, %d )", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "setresgid16",
vki_old_gid_t, rgid,
vki_old_gid_t, egid, vki_old_gid_t, sgid);
}
PRE(sys_setresgid)
{
PRINT("sys_setresgid ( %d, %d, %d )", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "setresgid",
vki_gid_t, rgid, vki_gid_t, egid, vki_gid_t, sgid);
}
PRE(sys_getresgid16)
{
PRINT("sys_getresgid16 ( %p, %p, %p )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "getresgid16",
vki_old_gid_t *, rgid, vki_old_gid_t *, egid,
vki_old_gid_t *, sgid);
PRE_MEM_WRITE( "getresgid16(rgid)", ARG1, sizeof(vki_old_gid_t) );
PRE_MEM_WRITE( "getresgid16(egid)", ARG2, sizeof(vki_old_gid_t) );
PRE_MEM_WRITE( "getresgid16(sgid)", ARG3, sizeof(vki_old_gid_t) );
}
POST(sys_getresgid16)
{
vg_assert(SUCCESS);
if (RES == 0) {
POST_MEM_WRITE( ARG1, sizeof(vki_old_gid_t) );
POST_MEM_WRITE( ARG2, sizeof(vki_old_gid_t) );
POST_MEM_WRITE( ARG3, sizeof(vki_old_gid_t) );
}
}
PRE(sys_getresgid)
{
PRINT("sys_getresgid ( %p, %p, %p )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "getresgid",
vki_gid_t *, rgid, vki_gid_t *, egid, vki_gid_t *, sgid);
PRE_MEM_WRITE( "getresgid(rgid)", ARG1, sizeof(vki_gid_t) );
PRE_MEM_WRITE( "getresgid(egid)", ARG2, sizeof(vki_gid_t) );
PRE_MEM_WRITE( "getresgid(sgid)", ARG3, sizeof(vki_gid_t) );
}
POST(sys_getresgid)
{
vg_assert(SUCCESS);
if (RES == 0) {
POST_MEM_WRITE( ARG1, sizeof(vki_gid_t) );
POST_MEM_WRITE( ARG2, sizeof(vki_gid_t) );
POST_MEM_WRITE( ARG3, sizeof(vki_gid_t) );
}
}
/* ---------------------------------------------------------------------
miscellaneous wrappers
------------------------------------------------------------------ */
PRE(sys_exit_group)
{
ThreadId t;
ThreadState* tst;
PRINT("exit_group( %d )", ARG1);
PRE_REG_READ1(void, "exit_group", int, exit_code);
tst = VG_(get_ThreadState)(tid);
/* A little complex; find all the threads with the same threadgroup
as this one (including this one), and mark them to exit */
for (t = 1; t < VG_N_THREADS; t++) {
if ( /* not alive */
VG_(threads)[t].status == VgTs_Empty
||
/* not our group */
VG_(threads)[t].os_state.threadgroup != tst->os_state.threadgroup
)
continue;
VG_(threads)[t].exitreason = VgSrc_ExitSyscall;
VG_(threads)[t].os_state.exitcode = ARG1;
if (t != tid)
VG_(kill_thread)(t); /* unblock it, if blocked */
}
/* We have to claim the syscall already succeeded. */
SET_STATUS_Success(0);
}
PRE(sys_llseek)
{
PRINT("sys_llseek ( %d, 0x%x, 0x%x, %p, %d )", ARG1,ARG2,ARG3,ARG4,ARG5);
PRE_REG_READ5(long, "llseek",
unsigned int, fd, unsigned long, offset_high,
unsigned long, offset_low, vki_loff_t *, result,
unsigned int, whence);
PRE_MEM_WRITE( "llseek(result)", ARG4, sizeof(vki_loff_t));
}
POST(sys_llseek)
{
vg_assert(SUCCESS);
if (RES == 0)
POST_MEM_WRITE( ARG4, sizeof(vki_loff_t) );
}
//zz PRE(sys_adjtimex, 0)
//zz {
//zz struct vki_timex *tx = (struct vki_timex *)ARG1;
//zz PRINT("sys_adjtimex ( %p )", ARG1);
//zz PRE_REG_READ1(long, "adjtimex", struct timex *, buf);
//zz PRE_MEM_READ( "adjtimex(timex->modes)", ARG1, sizeof(tx->modes));
//zz
#if 0 //zz (avoiding warnings about multi-line comments)
zz #define ADJX(bit,field) \
zz if (tx->modes & bit) \
zz PRE_MEM_READ( "adjtimex(timex->"#field")", \
zz (Addr)&tx->field, sizeof(tx->field))
#endif
//zz ADJX(ADJ_FREQUENCY, freq);
//zz ADJX(ADJ_MAXERROR, maxerror);
//zz ADJX(ADJ_ESTERROR, esterror);
//zz ADJX(ADJ_STATUS, status);
//zz ADJX(ADJ_TIMECONST, constant);
//zz ADJX(ADJ_TICK, tick);
//zz #undef ADJX
//zz
//zz PRE_MEM_WRITE( "adjtimex(timex)", ARG1, sizeof(struct vki_timex));
//zz }
//zz
//zz POST(sys_adjtimex)
//zz {
//zz POST_MEM_WRITE( ARG1, sizeof(struct vki_timex) );
//zz }
PRE(sys_ioperm)
{
PRINT("sys_ioperm ( %d, %d, %d )", ARG1, ARG2, ARG3 );
PRE_REG_READ3(long, "ioperm",
unsigned long, from, unsigned long, num, int, turn_on);
}
PRE(sys_syslog)
{
*flags |= SfMayBlock;
PRINT("sys_syslog (%d, %p, %d)", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "syslog", int, type, char *, bufp, int, len);
switch (ARG1) {
// The kernel uses magic numbers here, rather than named constants,
// therefore so do we.
case 2: case 3: case 4:
PRE_MEM_WRITE( "syslog(bufp)", ARG2, ARG3);
break;
default:
break;
}
}
POST(sys_syslog)
{
switch (ARG1) {
case 2: case 3: case 4:
POST_MEM_WRITE( ARG2, ARG3 );
break;
default:
break;
}
}
PRE(sys_vhangup)
{
PRINT("sys_vhangup ( )");
PRE_REG_READ0(long, "vhangup");
}
PRE(sys_sysinfo)
{
PRINT("sys_sysinfo ( %p )",ARG1);
PRE_REG_READ1(long, "sysinfo", struct sysinfo *, info);
PRE_MEM_WRITE( "sysinfo(info)", ARG1, sizeof(struct vki_sysinfo) );
}
POST(sys_sysinfo)
{
POST_MEM_WRITE( ARG1, sizeof(struct vki_sysinfo) );
}
PRE(sys_personality)
{
PRINT("sys_personality ( %llu )", (ULong)ARG1);
PRE_REG_READ1(long, "personality", vki_u_long, persona);
}
PRE(sys_sysctl)
{
struct __vki_sysctl_args *args;
PRINT("sys_sysctl ( %p )", ARG1 );
args = (struct __vki_sysctl_args *)ARG1;
PRE_REG_READ1(long, "sysctl", struct __sysctl_args *, args);
PRE_MEM_WRITE( "sysctl(args)", ARG1, sizeof(struct __vki_sysctl_args) );
if (!VG_(is_addressable)(ARG1, sizeof(struct __vki_sysctl_args), VKI_PROT_READ)) {
SET_STATUS_Failure( VKI_EFAULT );
return;
}
PRE_MEM_READ("sysctl(name)", (Addr)args->name, args->nlen * sizeof(*args->name));
if (args->newval != NULL)
PRE_MEM_READ("sysctl(newval)", (Addr)args->newval, args->newlen);
if (args->oldlenp != NULL) {
PRE_MEM_READ("sysctl(oldlenp)", (Addr)args->oldlenp, sizeof(*args->oldlenp));
PRE_MEM_WRITE("sysctl(oldval)", (Addr)args->oldval, *args->oldlenp);
}
}
POST(sys_sysctl)
{
struct __vki_sysctl_args *args;
args = (struct __vki_sysctl_args *)ARG1;
if (args->oldlenp != NULL) {
POST_MEM_WRITE((Addr)args->oldlenp, sizeof(*args->oldlenp));
POST_MEM_WRITE((Addr)args->oldval, 1 + *args->oldlenp);
}
}
PRE(sys_prctl)
{
*flags |= SfMayBlock;
PRINT( "prctl ( %d, %d, %d, %d, %d )", ARG1, ARG2, ARG3, ARG4, ARG5 );
// XXX: too simplistic, often not all args are used
// Nb: can't use "ARG2".."ARG5" here because that's our own macro...
PRE_REG_READ5(long, "prctl",
int, option, unsigned long, arg2, unsigned long, arg3,
unsigned long, arg4, unsigned long, arg5);
// XXX: totally wrong... we need to look at the 'option' arg, and do
// PRE_MEM_READs/PRE_MEM_WRITEs as necessary...
}
PRE(sys_sendfile)
{
*flags |= SfMayBlock;
PRINT("sys_sendfile ( %d, %d, %p, %lu )", ARG1,ARG2,ARG3,ARG4);
PRE_REG_READ4(ssize_t, "sendfile",
int, out_fd, int, in_fd, vki_off_t *, offset,
vki_size_t, count);
if (ARG3 != 0)
PRE_MEM_WRITE( "sendfile(offset)", ARG3, sizeof(vki_off_t) );
}
POST(sys_sendfile)
{
if (ARG3 != 0 ) {
POST_MEM_WRITE( ARG3, sizeof( vki_off_t ) );
}
}
PRE(sys_sendfile64)
{
*flags |= SfMayBlock;
PRINT("sendfile64 ( %d, %d, %p, %lu )",ARG1,ARG2,ARG3,ARG4);
PRE_REG_READ4(ssize_t, "sendfile64",
int, out_fd, int, in_fd, vki_loff_t *, offset,
vki_size_t, count);
if (ARG3 != 0)
PRE_MEM_WRITE( "sendfile64(offset)", ARG3, sizeof(vki_loff_t) );
}
POST(sys_sendfile64)
{
if (ARG3 != 0 ) {
POST_MEM_WRITE( ARG3, sizeof(vki_loff_t) );
}
}
PRE(sys_futex)
{
/*
arg param used by ops
ARG1 - u32 *futex all
ARG2 - int op
ARG3 - int val WAIT,WAKE,FD,REQUEUE,CMP_REQUEUE
ARG4 - struct timespec *utime WAIT:time* REQUEUE,CMP_REQUEUE:val2
ARG5 - u32 *uaddr2 REQUEUE,CMP_REQUEUE
ARG6 - int val3 CMP_REQUEUE
*/
PRINT("sys_futex ( %p, %d, %d, %p, %p )", ARG1,ARG2,ARG3,ARG4,ARG5);
PRE_REG_READ6(long, "futex",
vki_u32 *, futex, int, op, int, val,
struct timespec *, utime, vki_u32 *, uaddr2, int, val3);
PRE_MEM_READ( "futex(futex)", ARG1, sizeof(Int) );
*flags |= SfMayBlock;
switch(ARG2) {
case VKI_FUTEX_WAIT:
if (ARG4 != 0)
PRE_MEM_READ( "futex(timeout)", ARG4, sizeof(struct vki_timespec) );
break;
case VKI_FUTEX_REQUEUE:
case VKI_FUTEX_CMP_REQUEUE:
PRE_MEM_READ( "futex(futex2)", ARG5, sizeof(Int) );
break;
case VKI_FUTEX_WAKE:
case VKI_FUTEX_FD:
/* no additional pointers */
break;
default:
SET_STATUS_Failure( VKI_ENOSYS ); // some futex function we don't understand
break;
}
}
POST(sys_futex)
{
vg_assert(SUCCESS);
POST_MEM_WRITE( ARG1, sizeof(int) );
if (ARG2 == VKI_FUTEX_FD) {
if (!ML_(fd_allowed)(RES, "futex", tid, True)) {
VG_(close)(RES);
SET_STATUS_Failure( VKI_EMFILE );
} else {
if (VG_(clo_track_fds))
ML_(record_fd_open_nameless)(tid, RES);
}
}
}
PRE(sys_mmap2)
{
// Exactly like old_mmap() in x86-linux except:
// - all 6 args are passed in regs, rather than in a memory-block.
// - the file offset is specified in pagesize units rather than bytes,
// so that it can be used for files bigger than 2^32 bytes.
PRINT("sys_mmap2 ( %p, %llu, %d, %d, %d, %d )",
ARG1, (ULong)ARG2, ARG3, ARG4, ARG5, ARG6 );
PRE_REG_READ6(long, "mmap2",
unsigned long, start, unsigned long, length,
unsigned long, prot, unsigned long, flags,
unsigned long, fd, unsigned long, offset);
if (ARG2 == 0) {
/* SuSV3 says: If len is zero, mmap() shall fail and no mapping
shall be established. */
SET_STATUS_Failure( VKI_EINVAL );
return;
}
if (/*(ARG4 & VKI_MAP_FIXED) && */ (0 != (ARG1 & (VKI_PAGE_SIZE-1)))) {
/* zap any misaligned addresses. */
/* SuSV3 says misaligned addresses only cause the MAP_FIXED case
to fail. Here, we catch them all. */
SET_STATUS_Failure( VKI_EINVAL );
return;
}
if (ARG4 & VKI_MAP_FIXED) {
if (!ML_(valid_client_addr)(ARG1, ARG2, tid, "mmap2"))
SET_STATUS_Failure( VKI_ENOMEM );
} else {
Addr a = VG_(find_map_space)(ARG1, ARG2, True);
if (a == 0 && ARG1 != 0)
a = VG_(find_map_space)(0, ARG2, True);
if (a == 0) {
SET_STATUS_Failure( VKI_ENOMEM );
} else {
ARG1 = a;
ARG4 |= VKI_MAP_FIXED;
}
}
}
POST(sys_mmap2)
{
vg_assert(SUCCESS);
vg_assert(ML_(valid_client_addr)(RES, ARG2, tid, "mmap2"));
ML_(mmap_segment)( (Addr)RES, ARG2, ARG3, ARG4, ARG5,
ARG6 * (ULong)VKI_PAGE_SIZE );
}
/* ---------------------------------------------------------------------
epoll_* wrappers
------------------------------------------------------------------ */
PRE(sys_epoll_create)
{
PRINT("sys_epoll_create ( %d )", ARG1);
PRE_REG_READ1(long, "epoll_create", int, size);
}
POST(sys_epoll_create)
{
vg_assert(SUCCESS);
if (!ML_(fd_allowed)(RES, "epoll_create", tid, True)) {
VG_(close)(RES);
SET_STATUS_Failure( VKI_EMFILE );
} else {
if (VG_(clo_track_fds))
ML_(record_fd_open_nameless) (tid, RES);
}
}
PRE(sys_epoll_ctl)
{
static const HChar* epoll_ctl_s[3] = {
"EPOLL_CTL_ADD",
"EPOLL_CTL_DEL",
"EPOLL_CTL_MOD"
};
PRINT("sys_epoll_ctl ( %d, %s, %d, %p )",
ARG1, ( ARG2<3 ? epoll_ctl_s[ARG2] : "?" ), ARG3, ARG4);
PRE_REG_READ4(long, "epoll_ctl",
int, epfd, int, op, int, fd, struct vki_epoll_event *, event);
if (ARG2 != VKI_EPOLL_CTL_DEL)
PRE_MEM_READ( "epoll_ctl(event)", ARG4, sizeof(struct vki_epoll_event) );
}
PRE(sys_epoll_wait)
{
*flags |= SfMayBlock;
PRINT("sys_epoll_wait ( %d, %p, %d, %d )", ARG1, ARG2, ARG3, ARG4);
PRE_REG_READ4(long, "epoll_wait",
int, epfd, struct vki_epoll_event *, events,
int, maxevents, int, timeout);
PRE_MEM_WRITE( "epoll_wait(events)", ARG2, sizeof(struct vki_epoll_event)*ARG3);
}
POST(sys_epoll_wait)
{
vg_assert(SUCCESS);
if (RES > 0)
POST_MEM_WRITE( ARG2, sizeof(struct vki_epoll_event)*RES ) ;
}
/* ---------------------------------------------------------------------
tid-related wrappers
------------------------------------------------------------------ */
PRE(sys_gettid)
{
PRINT("sys_gettid ()");
PRE_REG_READ0(long, "gettid");
}
PRE(sys_set_tid_address)
{
PRINT("sys_set_tid_address ( %p )", ARG1);
PRE_REG_READ1(long, "set_tid_address", int *, tidptr);
}
//zz PRE(sys_tkill, Special)
//zz {
//zz /* int tkill(pid_t tid, int sig); */
//zz PRINT("sys_tkill ( %d, %d )", ARG1,ARG2);
//zz PRE_REG_READ2(long, "tkill", int, tid, int, sig);
//zz if (!ML_(client_signal_OK)(ARG2)) {
//zz SET_STATUS_( -VKI_EINVAL );
//zz return;
//zz }
//zz
//zz /* If we're sending SIGKILL, check to see if the target is one of
//zz our threads and handle it specially. */
//zz if (ARG2 == VKI_SIGKILL && ML_(do_sigkill)(ARG1, -1))
//zz SET_STATUS_(0);
//zz else
//zz SET_STATUS_(VG_(do_syscall2)(SYSNO, ARG1, ARG2));
//zz
//zz if (VG_(clo_trace_signals))
//zz VG_(message)(Vg_DebugMsg, "tkill: sent signal %d to pid %d",
//zz ARG2, ARG1);
//zz // Check to see if this kill gave us a pending signal
//zz XXX FIXME VG_(poll_signals)(tid);
//zz }
PRE(sys_tgkill)
{
PRINT("sys_tgkill ( %d, %d, %d )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "tgkill", int, tgid, int, tid, int, sig);
if (!ML_(client_signal_OK)(ARG3)) {
SET_STATUS_Failure( VKI_EINVAL );
return;
}
/* If we're sending SIGKILL, check to see if the target is one of
our threads and handle it specially. */
if (ARG3 == VKI_SIGKILL && ML_(do_sigkill)(ARG2, ARG1))
SET_STATUS_Success(0);
else
SET_STATUS_from_SysRes(VG_(do_syscall3)(SYSNO, ARG1, ARG2, ARG3));
if (VG_(clo_trace_signals))
VG_(message)(Vg_DebugMsg, "tgkill: sent signal %d to pid %d/%d",
ARG3, ARG1, ARG2);
/* Check to see if this kill gave us a pending signal */
*flags |= SfPollAfter;
}
POST(sys_tgkill)
{
if (VG_(clo_trace_signals))
VG_(message)(Vg_DebugMsg, "tgkill: sent signal %d to pid %d/%d",
ARG3, ARG1, ARG2);
}
/* ---------------------------------------------------------------------
fadvise64* wrappers
------------------------------------------------------------------ */
PRE(sys_fadvise64)
{
PRINT("sys_fadvise64 ( %d, %lld, %lu, %d )",
ARG1, LOHI64(ARG2,ARG3), ARG4, ARG5);
PRE_REG_READ5(long, "fadvise64",
int, fd, vki_u32, offset_low, vki_u32, offset_high,
vki_size_t, len, int, advice);
}
PRE(sys_fadvise64_64)
{
PRINT("sys_fadvise64_64 ( %d, %lld, %lld, %d )",
ARG1, LOHI64(ARG2,ARG3), LOHI64(ARG4,ARG5), ARG6);
PRE_REG_READ6(long, "fadvise64_64",
int, fd, vki_u32, offset_low, vki_u32, offset_high,
vki_u32, len_low, vki_u32, len_high, int, advice);
}
/* ---------------------------------------------------------------------
io_* wrappers
------------------------------------------------------------------ */
// Nb: this wrapper has to pad/unpad memory around the syscall itself,
// and this allows us to control exactly the code that gets run while
// the padding is in place.
PRE(sys_io_setup)
{
SizeT size;
Addr addr;
PRINT("sys_io_setup ( %u, %p )", ARG1,ARG2);
PRE_REG_READ2(long, "io_setup",
unsigned, nr_events, vki_aio_context_t *, ctxp);
PRE_MEM_WRITE( "io_setup(ctxp)", ARG2, sizeof(vki_aio_context_t) );
size = VG_PGROUNDUP(sizeof(struct vki_aio_ring) +
ARG1*sizeof(struct vki_io_event));
addr = VG_(find_map_space)(0, size, True);
if (addr == 0) {
SET_STATUS_Failure( VKI_ENOMEM );
return;
}
VG_(map_segment)(addr, size, VKI_PROT_READ|VKI_PROT_WRITE, 0);
VG_(pad_address_space)(0);
SET_STATUS_from_SysRes( VG_(do_syscall2)(SYSNO, ARG1, ARG2) );
VG_(unpad_address_space)(0);
if (SUCCESS && RES == 0) {
struct vki_aio_ring *r = *(struct vki_aio_ring **)ARG2;
vg_assert(addr == (Addr)r);
vg_assert(ML_(valid_client_addr)(addr, size, tid, "io_setup"));
VG_TRACK( new_mem_mmap, addr, size, True, True, False );
POST_MEM_WRITE( ARG2, sizeof(vki_aio_context_t) );
}
else {
VG_(unmap_range)(addr, size);
}
}
// Nb: This wrapper is "Special" because we need 'size' to do the unmap
// after the syscall. We must get 'size' from the aio_ring structure,
// before the syscall, while the aio_ring structure still exists. (And we
// know that we must look at the aio_ring structure because Tom inspected the
// kernel and glibc sources to see what they do, yuk.)
//
// XXX This segment can be implicitly unmapped when aio
// file-descriptors are closed...
PRE(sys_io_destroy)
{
Segment *s = VG_(find_segment)(ARG1);
struct vki_aio_ring *r;
SizeT size;
PRINT("sys_io_destroy ( %llu )", (ULong)ARG1);
PRE_REG_READ1(long, "io_destroy", vki_aio_context_t, ctx);
// If we are going to seg fault (due to a bogus ARG1) do it as late as
// possible...
r = *(struct vki_aio_ring **)ARG1;
size = VG_PGROUNDUP(sizeof(struct vki_aio_ring) +
r->nr*sizeof(struct vki_io_event));
SET_STATUS_from_SysRes( VG_(do_syscall1)(SYSNO, ARG1) );
if (SUCCESS && RES == 0 && s != NULL) {
VG_TRACK( die_mem_munmap, ARG1, size );
VG_(unmap_range)(ARG1, size);
}
}
PRE(sys_io_getevents)
{
*flags |= SfMayBlock;
PRINT("sys_io_getevents ( %llu, %lld, %lld, %p, %p )",
(ULong)ARG1,(Long)ARG2,(Long)ARG3,ARG4,ARG5);
PRE_REG_READ5(long, "io_getevents",
vki_aio_context_t, ctx_id, long, min_nr, long, nr,
struct io_event *, events,
struct timespec *, timeout);
if (ARG3 > 0)
PRE_MEM_WRITE( "io_getevents(events)",
ARG4, sizeof(struct vki_io_event)*ARG3 );
if (ARG5 != 0)
PRE_MEM_READ( "io_getevents(timeout)",
ARG5, sizeof(struct vki_timespec));
}
POST(sys_io_getevents)
{
Int i;
vg_assert(SUCCESS);
if (RES > 0) {
POST_MEM_WRITE( ARG4, sizeof(struct vki_io_event)*RES );
for (i = 0; i < RES; i++) {
const struct vki_io_event *vev = ((struct vki_io_event *)ARG4) + i;
const struct vki_iocb *cb = (struct vki_iocb *)(Addr)vev->obj;
switch (cb->aio_lio_opcode) {
case VKI_IOCB_CMD_PREAD:
if (vev->result > 0)
POST_MEM_WRITE( cb->aio_buf, vev->result );
break;
case VKI_IOCB_CMD_PWRITE:
break;
default:
VG_(message)(Vg_DebugMsg,
"Warning: unhandled io_getevents opcode: %u\n",
cb->aio_lio_opcode);
break;
}
}
}
}
PRE(sys_io_submit)
{
Int i;
PRINT("sys_io_submit ( %llu, %ld, %p )", (ULong)ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "io_submit",
vki_aio_context_t, ctx_id, long, nr,
struct iocb **, iocbpp);
PRE_MEM_READ( "io_submit(iocbpp)", ARG3, ARG2*sizeof(struct vki_iocb *) );
if (ARG3 != 0) {
for (i = 0; i < ARG2; i++) {
struct vki_iocb *cb = ((struct vki_iocb **)ARG3)[i];
PRE_MEM_READ( "io_submit(iocb)", (Addr)cb, sizeof(struct vki_iocb) );
switch (cb->aio_lio_opcode) {
case VKI_IOCB_CMD_PREAD:
PRE_MEM_WRITE( "io_submit(PREAD)", cb->aio_buf, cb->aio_nbytes );
break;
case VKI_IOCB_CMD_PWRITE:
PRE_MEM_READ( "io_submit(PWRITE)", cb->aio_buf, cb->aio_nbytes );
break;
default:
VG_(message)(Vg_DebugMsg,"Warning: unhandled io_submit opcode: %u\n",
cb->aio_lio_opcode);
break;
}
}
}
}
PRE(sys_io_cancel)
{
PRINT("sys_io_cancel ( %llu, %p, %p )", (ULong)ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "io_cancel",
vki_aio_context_t, ctx_id, struct iocb *, iocb,
struct io_event *, result);
PRE_MEM_READ( "io_cancel(iocb)", ARG2, sizeof(struct vki_iocb) );
PRE_MEM_WRITE( "io_cancel(result)", ARG3, sizeof(struct vki_io_event) );
}
POST(sys_io_cancel)
{
POST_MEM_WRITE( ARG3, sizeof(struct vki_io_event) );
}
/* ---------------------------------------------------------------------
*_mempolicy wrappers
------------------------------------------------------------------ */
PRE(sys_set_mempolicy)
{
PRINT("sys_set_mempolicy ( %d, %p, %d )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "set_mempolicy",
int, policy, unsigned long *, nodemask,
unsigned long, maxnode);
PRE_MEM_READ( "set_mempolicy(nodemask)", ARG2,
VG_ROUNDUP( ARG3, sizeof(UWord) ) / sizeof(UWord) );
}
PRE(sys_get_mempolicy)
{
PRINT("sys_get_mempolicy ( %p, %p, %d, %p, %x )", ARG1,ARG2,ARG3,ARG4,ARG5);
PRE_REG_READ5(long, "get_mempolicy",
int *, policy, unsigned long *, nodemask,
unsigned long, maxnode, unsigned long, addr,
unsigned long, flags);
if (ARG1 != 0)
PRE_MEM_WRITE( "get_mempolicy(policy)", ARG1, sizeof(Int) );
if (ARG2 != 0)
PRE_MEM_WRITE( "get_mempolicy(nodemask)", ARG2,
VG_ROUNDUP( ARG3, sizeof(UWord) * 8 ) / sizeof(UWord) );
}
POST(sys_get_mempolicy)
{
if (ARG1 != 0)
POST_MEM_WRITE( ARG1, sizeof(Int) );
if (ARG2 != 0)
POST_MEM_WRITE( ARG2, VG_ROUNDUP( ARG3, sizeof(UWord) * 8 ) / sizeof(UWord) );
}
/* ---------------------------------------------------------------------
inotify_* wrappers
------------------------------------------------------------------ */
PRE(sys_inotify_init)
{
PRINT("sys_inotify_init ( )");
PRE_REG_READ0(long, "inotify_init");
}
POST(sys_inotify_init)
{
vg_assert(SUCCESS);
if (!ML_(fd_allowed)(RES, "inotify_init", tid, True)) {
VG_(close)(RES);
SET_STATUS_Failure( VKI_EMFILE );
} else {
if (VG_(clo_track_fds))
ML_(record_fd_open_nameless) (tid, RES);
}
}
PRE(sys_inotify_add_watch)
{
PRINT( "sys_inotify_add_watch ( %d, %p, %x )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "inotify_add_watch", int, fd, char *, path, int, mask);
PRE_MEM_RASCIIZ( "inotify_add_watch(path)", ARG2 );
}
PRE(sys_inotify_rm_watch)
{
PRINT( "sys_inotify_rm_watch ( %d, %x )", ARG1,ARG2);
PRE_REG_READ2(long, "inotify_rm_watch", int, fd, int, wd);
}
/* ---------------------------------------------------------------------
mq_* wrappers
------------------------------------------------------------------ */
PRE(sys_mq_open)
{
PRINT("sys_mq_open( %p(%s), %d, %lld, %p )",
ARG1,ARG1,ARG2,(ULong)ARG3,ARG4);
PRE_REG_READ4(long, "mq_open",
const char *, name, int, oflag, vki_mode_t, mode,
struct mq_attr *, attr);
PRE_MEM_RASCIIZ( "mq_open(name)", ARG1 );
if ((ARG2 & VKI_O_CREAT) != 0 && ARG4 != 0) {
const struct vki_mq_attr *attr = (struct vki_mq_attr *)ARG4;
PRE_MEM_READ( "mq_open(attr->mq_maxmsg)",
(Addr)&attr->mq_maxmsg, sizeof(attr->mq_maxmsg) );
PRE_MEM_READ( "mq_open(attr->mq_msgsize)",
(Addr)&attr->mq_msgsize, sizeof(attr->mq_msgsize) );
}
}
POST(sys_mq_open)
{
vg_assert(SUCCESS);
if (!ML_(fd_allowed)(RES, "mq_open", tid, True)) {
VG_(close)(RES);
SET_STATUS_Failure( VKI_EMFILE );
} else {
if (VG_(clo_track_fds))
ML_(record_fd_open_with_given_name)(tid, RES, (Char*)ARG1);
}
}
PRE(sys_mq_unlink)
{
PRINT("sys_mq_unlink ( %p(%s) )", ARG1,ARG1);
PRE_REG_READ1(long, "mq_unlink", const char *, name);
PRE_MEM_RASCIIZ( "mq_unlink(name)", ARG1 );
}
PRE(sys_mq_timedsend)
{
*flags |= SfMayBlock;
PRINT("sys_mq_timedsend ( %d, %p, %llu, %d, %p )",
ARG1,ARG2,(ULong)ARG3,ARG4,ARG5);
PRE_REG_READ5(long, "mq_timedsend",
vki_mqd_t, mqdes, const char *, msg_ptr, vki_size_t, msg_len,
unsigned int, msg_prio, const struct timespec *, abs_timeout);
if (!ML_(fd_allowed)(ARG1, "mq_timedsend", tid, False)) {
SET_STATUS_Failure( VKI_EBADF );
} else {
PRE_MEM_READ( "mq_timedsend(msg_ptr)", ARG2, ARG3 );
if (ARG5 != 0)
PRE_MEM_READ( "mq_timedsend(abs_timeout)", ARG5,
sizeof(struct vki_timespec) );
}
}
PRE(sys_mq_timedreceive)
{
*flags |= SfMayBlock;
PRINT("sys_mq_timedreceive( %d, %p, %llu, %p, %p )",
ARG1,ARG2,(ULong)ARG3,ARG4,ARG5);
PRE_REG_READ5(ssize_t, "mq_timedreceive",
vki_mqd_t, mqdes, char *, msg_ptr, vki_size_t, msg_len,
unsigned int *, msg_prio,
const struct timespec *, abs_timeout);
if (!ML_(fd_allowed)(ARG1, "mq_timedreceive", tid, False)) {
SET_STATUS_Failure( VKI_EBADF );
} else {
PRE_MEM_WRITE( "mq_timedreceive(msg_ptr)", ARG2, ARG3 );
if (ARG4 != 0)
PRE_MEM_WRITE( "mq_timedreceive(msg_prio)",
ARG4, sizeof(unsigned int) );
if (ARG5 != 0)
PRE_MEM_READ( "mq_timedreceive(abs_timeout)",
ARG5, sizeof(struct vki_timespec) );
}
}
POST(sys_mq_timedreceive)
{
POST_MEM_WRITE( ARG2, ARG3 );
if (ARG4 != 0)
POST_MEM_WRITE( ARG4, sizeof(unsigned int) );
}
PRE(sys_mq_notify)
{
PRINT("sys_mq_notify( %d, %p )", ARG1,ARG2 );
PRE_REG_READ2(long, "mq_notify",
vki_mqd_t, mqdes, const struct sigevent *, notification);
if (!ML_(fd_allowed)(ARG1, "mq_notify", tid, False))
SET_STATUS_Failure( VKI_EBADF );
else if (ARG2 != 0)
PRE_MEM_READ( "mq_notify(notification)",
ARG2, sizeof(struct vki_sigevent) );
}
PRE(sys_mq_getsetattr)
{
PRINT("sys_mq_getsetattr( %d, %p, %p )", ARG1,ARG2,ARG3 );
PRE_REG_READ3(long, "mq_getsetattr",
vki_mqd_t, mqdes, const struct mq_attr *, mqstat,
struct mq_attr *, omqstat);
if (!ML_(fd_allowed)(ARG1, "mq_getsetattr", tid, False)) {
SET_STATUS_Failure( VKI_EBADF );
} else {
if (ARG2 != 0) {
const struct vki_mq_attr *attr = (struct vki_mq_attr *)ARG2;
PRE_MEM_READ( "mq_getsetattr(mqstat->mq_flags)",
(Addr)&attr->mq_flags, sizeof(attr->mq_flags) );
}
if (ARG3 != 0)
PRE_MEM_WRITE( "mq_getsetattr(omqstat)", ARG3,
sizeof(struct vki_mq_attr) );
}
}
POST(sys_mq_getsetattr)
{
if (ARG3 != 0)
POST_MEM_WRITE( ARG3, sizeof(struct vki_mq_attr) );
}
/* ---------------------------------------------------------------------
clock_* wrappers
------------------------------------------------------------------ */
PRE(sys_clock_settime)
{
PRINT("sys_clock_settime( %d, %p )", ARG1,ARG2);
PRE_REG_READ2(long, "clock_settime",
vki_clockid_t, clk_id, const struct timespec *, tp);
PRE_MEM_READ( "clock_settime(tp)", ARG2, sizeof(struct vki_timespec) );
}
PRE(sys_clock_gettime)
{
PRINT("sys_clock_gettime( %d, %p )" , ARG1,ARG2);
PRE_REG_READ2(long, "clock_gettime",
vki_clockid_t, clk_id, struct timespec *, tp);
PRE_MEM_WRITE( "clock_gettime(tp)", ARG2, sizeof(struct vki_timespec) );
}
POST(sys_clock_gettime)
{
POST_MEM_WRITE( ARG2, sizeof(struct vki_timespec) );
}
PRE(sys_clock_getres)
{
PRINT("sys_clock_getres( %d, %p )" , ARG1,ARG2);
// Nb: we can't use "RES" as the param name because that's a macro
// defined above!
PRE_REG_READ2(long, "clock_getres",
vki_clockid_t, clk_id, struct timespec *, res);
if (ARG2 != 0)
PRE_MEM_WRITE( "clock_getres(res)", ARG2, sizeof(struct vki_timespec) );
}
POST(sys_clock_getres)
{
if (ARG2 != 0)
POST_MEM_WRITE( ARG2, sizeof(struct vki_timespec) );
}
PRE(sys_clock_nanosleep)
{
*flags |= SfMayBlock|SfPostOnFail;
PRINT("sys_clock_nanosleep( %d, %d, %p, %p )", ARG1,ARG2,ARG3,ARG4);
PRE_REG_READ4(int32_t, "clock_nanosleep",
vki_clockid_t, clkid, int, flags,
const struct timespec *, rqtp, struct timespec *, rmtp);
PRE_MEM_READ( "clock_nanosleep(rqtp)", ARG3, sizeof(struct vki_timespec) );
if (ARG4 != 0)
PRE_MEM_WRITE( "clock_nanosleep(rmtp)", ARG4, sizeof(struct vki_timespec) );
}
POST(sys_clock_nanosleep)
{
if (ARG4 != 0 && FAILURE && RES_unchecked == VKI_EINTR)
POST_MEM_WRITE( ARG4, sizeof(struct vki_timespec) );
}
/* ---------------------------------------------------------------------
timer_* wrappers
------------------------------------------------------------------ */
PRE(sys_timer_create)
{
PRINT("sys_timer_create( %d, %p, %p )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "timer_create",
vki_clockid_t, clockid, struct sigevent *, evp,
vki_timer_t *, timerid);
if (ARG2 != 0)
PRE_MEM_READ( "timer_create(evp)", ARG2, sizeof(struct vki_sigevent) );
PRE_MEM_WRITE( "timer_create(timerid)", ARG3, sizeof(vki_timer_t) );
}
POST(sys_timer_create)
{
POST_MEM_WRITE( ARG3, sizeof(vki_timer_t) );
}
PRE(sys_timer_settime)
{
PRINT("sys_timer_settime( %lld, %d, %p, %p )", (ULong)ARG1,ARG2,ARG3,ARG4);
PRE_REG_READ4(long, "timer_settime",
vki_timer_t, timerid, int, flags,
const struct itimerspec *, value,
struct itimerspec *, ovalue);
PRE_MEM_READ( "timer_settime(value)", ARG3,
sizeof(struct vki_itimerspec) );
if (ARG4 != 0)
PRE_MEM_WRITE( "timer_settime(ovalue)", ARG4,
sizeof(struct vki_itimerspec) );
}
POST(sys_timer_settime)
{
if (ARG4 != 0)
POST_MEM_WRITE( ARG4, sizeof(struct vki_itimerspec) );
}
PRE(sys_timer_gettime)
{
PRINT("sys_timer_gettime( %lld, %p )", (ULong)ARG1,ARG2);
PRE_REG_READ2(long, "timer_gettime",
vki_timer_t, timerid, struct itimerspec *, value);
PRE_MEM_WRITE( "timer_gettime(value)", ARG2,
sizeof(struct vki_itimerspec));
}
POST(sys_timer_gettime)
{
POST_MEM_WRITE( ARG2, sizeof(struct vki_itimerspec) );
}
PRE(sys_timer_getoverrun)
{
PRINT("sys_timer_getoverrun( %p )", ARG1);
PRE_REG_READ1(long, "timer_getoverrun", vki_timer_t, timerid);
}
PRE(sys_timer_delete)
{
PRINT("sys_timer_delete( %p )", ARG1);
PRE_REG_READ1(long, "timer_delete", vki_timer_t, timerid);
}
/* ---------------------------------------------------------------------
capabilities wrappers
------------------------------------------------------------------ */
PRE(sys_capget)
{
PRINT("sys_capget ( %p, %p )", ARG1, ARG2 );
PRE_REG_READ2(long, "capget",
vki_cap_user_header_t, header, vki_cap_user_data_t, data);
PRE_MEM_READ( "capget(header)", ARG1,
sizeof(struct __vki_user_cap_header_struct) );
PRE_MEM_WRITE( "capget(data)", ARG2,
sizeof(struct __vki_user_cap_data_struct) );
}
POST(sys_capget)
{
if (ARG2 != (Addr)NULL)
POST_MEM_WRITE( ARG2, sizeof(struct __vki_user_cap_data_struct) );
}
PRE(sys_capset)
{
PRINT("sys_capset ( %p, %p )", ARG1, ARG2 );
PRE_REG_READ2(long, "capset",
vki_cap_user_header_t, header,
const vki_cap_user_data_t, data);
PRE_MEM_READ( "capset(header)",
ARG1, sizeof(struct __vki_user_cap_header_struct) );
PRE_MEM_READ( "capset(data)",
ARG2, sizeof(struct __vki_user_cap_data_struct) );
}
/* ---------------------------------------------------------------------
16-bit uid/gid/groups wrappers
------------------------------------------------------------------ */
PRE(sys_getuid16)
{
PRINT("sys_getuid16 ( )");
PRE_REG_READ0(long, "getuid16");
}
PRE(sys_setuid16)
{
PRINT("sys_setuid16 ( %d )", ARG1);
PRE_REG_READ1(long, "setuid16", vki_old_uid_t, uid);
}
PRE(sys_getgid16)
{
PRINT("sys_getgid16 ( )");
PRE_REG_READ0(long, "getgid16");
}
PRE(sys_setgid16)
{
PRINT("sys_setgid16 ( %d )", ARG1);
PRE_REG_READ1(long, "setgid16", vki_old_gid_t, gid);
}
PRE(sys_geteuid16)
{
PRINT("sys_geteuid16 ( )");
PRE_REG_READ0(long, "geteuid16");
}
PRE(sys_getegid16)
{
PRINT("sys_getegid16 ( )");
PRE_REG_READ0(long, "getegid16");
}
PRE(sys_setreuid16)
{
PRINT("setreuid16 ( 0x%x, 0x%x )", ARG1, ARG2);
PRE_REG_READ2(long, "setreuid16", vki_old_uid_t, ruid, vki_old_uid_t, euid);
}
PRE(sys_setregid16)
{
PRINT("sys_setregid16 ( %d, %d )", ARG1, ARG2);
PRE_REG_READ2(long, "setregid16", vki_old_gid_t, rgid, vki_old_gid_t, egid);
}
PRE(sys_getgroups16)
{
PRINT("sys_getgroups16 ( %d, %p )", ARG1, ARG2);
PRE_REG_READ2(long, "getgroups16", int, size, vki_old_gid_t *, list);
if (ARG1 > 0)
PRE_MEM_WRITE( "getgroups16(list)", ARG2, ARG1 * sizeof(vki_old_gid_t) );
}
POST(sys_getgroups16)
{
vg_assert(SUCCESS);
if (ARG1 > 0 && RES > 0)
POST_MEM_WRITE( ARG2, RES * sizeof(vki_old_gid_t) );
}
PRE(sys_setgroups16)
{
PRINT("sys_setgroups16 ( %llu, %p )", (ULong)ARG1, ARG2);
PRE_REG_READ2(long, "setgroups16", int, size, vki_old_gid_t *, list);
if (ARG1 > 0)
PRE_MEM_READ( "setgroups16(list)", ARG2, ARG1 * sizeof(vki_old_gid_t) );
}
/* ---------------------------------------------------------------------
*chown16 wrappers
------------------------------------------------------------------ */
PRE(sys_chown16)
{
PRINT("sys_chown16 ( %p, 0x%x, 0x%x )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "chown16",
const char *, path,
vki_old_uid_t, owner, vki_old_gid_t, group);
PRE_MEM_RASCIIZ( "chown16(path)", ARG1 );
}
PRE(sys_fchown16)
{
PRINT("sys_fchown16 ( %d, %d, %d )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "fchown16",
unsigned int, fd, vki_old_uid_t, owner, vki_old_gid_t, group);
}
/* ---------------------------------------------------------------------
*xattr wrappers
------------------------------------------------------------------ */
PRE(sys_setxattr)
{
*flags |= SfMayBlock;
PRINT("sys_setxattr ( %p, %p, %p, %llu, %d )",
ARG1, ARG2, ARG3, (ULong)ARG4, ARG5);
PRE_REG_READ5(long, "setxattr",
char *, path, char *, name,
void *, value, vki_size_t, size, int, flags);
PRE_MEM_RASCIIZ( "setxattr(path)", ARG1 );
PRE_MEM_RASCIIZ( "setxattr(name)", ARG2 );
PRE_MEM_READ( "setxattr(value)", ARG3, ARG4 );
}
PRE(sys_lsetxattr)
{
*flags |= SfMayBlock;
PRINT("sys_lsetxattr ( %p, %p, %p, %llu, %d )",
ARG1, ARG2, ARG3, (ULong)ARG4, ARG5);
PRE_REG_READ5(long, "lsetxattr",
char *, path, char *, name,
void *, value, vki_size_t, size, int, flags);
PRE_MEM_RASCIIZ( "lsetxattr(path)", ARG1 );
PRE_MEM_RASCIIZ( "lsetxattr(name)", ARG2 );
PRE_MEM_READ( "lsetxattr(value)", ARG3, ARG4 );
}
PRE(sys_fsetxattr)
{
*flags |= SfMayBlock;
PRINT("sys_fsetxattr ( %d, %p, %p, %llu, %d )",
ARG1, ARG2, ARG3, (ULong)ARG4, ARG5);
PRE_REG_READ5(long, "fsetxattr",
int, fd, char *, name, void *, value,
vki_size_t, size, int, flags);
PRE_MEM_RASCIIZ( "fsetxattr(name)", ARG2 );
PRE_MEM_READ( "fsetxattr(value)", ARG3, ARG4 );
}
PRE(sys_getxattr)
{
*flags |= SfMayBlock;
PRINT("sys_getxattr ( %p, %p, %p, %llu )", ARG1,ARG2,ARG3, (ULong)ARG4);
PRE_REG_READ4(ssize_t, "getxattr",
char *, path, char *, name, void *, value, vki_size_t, size);
PRE_MEM_RASCIIZ( "getxattr(path)", ARG1 );
PRE_MEM_RASCIIZ( "getxattr(name)", ARG2 );
PRE_MEM_WRITE( "getxattr(value)", ARG3, ARG4 );
}
POST(sys_getxattr)
{
vg_assert(SUCCESS);
if (RES > 0 && ARG3 != (Addr)NULL) {
POST_MEM_WRITE( ARG3, RES );
}
}
PRE(sys_lgetxattr)
{
*flags |= SfMayBlock;
PRINT("sys_lgetxattr ( %p, %p, %p, %llu )", ARG1,ARG2,ARG3, (ULong)ARG4);
PRE_REG_READ4(ssize_t, "lgetxattr",
char *, path, char *, name, void *, value, vki_size_t, size);
PRE_MEM_RASCIIZ( "lgetxattr(path)", ARG1 );
PRE_MEM_RASCIIZ( "lgetxattr(name)", ARG2 );
PRE_MEM_WRITE( "lgetxattr(value)", ARG3, ARG4 );
}
POST(sys_lgetxattr)
{
vg_assert(SUCCESS);
if (RES > 0 && ARG3 != (Addr)NULL) {
POST_MEM_WRITE( ARG3, RES );
}
}
PRE(sys_fgetxattr)
{
*flags |= SfMayBlock;
PRINT("sys_fgetxattr ( %d, %p, %p, %llu )", ARG1, ARG2, ARG3, (ULong)ARG4);
PRE_REG_READ4(ssize_t, "fgetxattr",
int, fd, char *, name, void *, value, vki_size_t, size);
PRE_MEM_RASCIIZ( "fgetxattr(name)", ARG2 );
PRE_MEM_WRITE( "fgetxattr(value)", ARG3, ARG4 );
}
POST(sys_fgetxattr)
{
if (RES > 0 && ARG3 != (Addr)NULL)
POST_MEM_WRITE( ARG3, RES );
}
PRE(sys_listxattr)
{
*flags |= SfMayBlock;
PRINT("sys_listxattr ( %p, %p, %llu )", ARG1, ARG2, (ULong)ARG3);
PRE_REG_READ3(ssize_t, "listxattr",
char *, path, char *, list, vki_size_t, size);
PRE_MEM_RASCIIZ( "listxattr(path)", ARG1 );
PRE_MEM_WRITE( "listxattr(list)", ARG2, ARG3 );
}
POST(sys_listxattr)
{
if (RES > 0 && ARG2 != (Addr)NULL)
POST_MEM_WRITE( ARG2, RES );
}
PRE(sys_llistxattr)
{
*flags |= SfMayBlock;
PRINT("sys_llistxattr ( %p, %p, %llu )", ARG1, ARG2, (ULong)ARG3);
PRE_REG_READ3(ssize_t, "llistxattr",
char *, path, char *, list, vki_size_t, size);
PRE_MEM_RASCIIZ( "llistxattr(path)", ARG1 );
PRE_MEM_WRITE( "llistxattr(list)", ARG2, ARG3 );
}
POST(sys_llistxattr)
{
if (RES > 0 && ARG2 != (Addr)NULL)
POST_MEM_WRITE( ARG2, RES );
}
PRE(sys_flistxattr)
{
*flags |= SfMayBlock;
PRINT("sys_flistxattr ( %d, %p, %llu )", ARG1, ARG2, (ULong)ARG3);
PRE_REG_READ3(ssize_t, "flistxattr",
int, fd, char *, list, vki_size_t, size);
PRE_MEM_WRITE( "flistxattr(list)", ARG2, ARG3 );
}
POST(sys_flistxattr)
{
if (RES > 0 && ARG2 != (Addr)NULL)
POST_MEM_WRITE( ARG2, RES );
}
PRE(sys_removexattr)
{
*flags |= SfMayBlock;
PRINT("sys_removexattr ( %p, %p )", ARG1, ARG2);
PRE_REG_READ2(long, "removexattr", char *, path, char *, name);
PRE_MEM_RASCIIZ( "removexattr(path)", ARG1 );
PRE_MEM_RASCIIZ( "removexattr(name)", ARG2 );
}
PRE(sys_lremovexattr)
{
*flags |= SfMayBlock;
PRINT("sys_lremovexattr ( %p, %p )", ARG1, ARG2);
PRE_REG_READ2(long, "lremovexattr", char *, path, char *, name);
PRE_MEM_RASCIIZ( "lremovexattr(path)", ARG1 );
PRE_MEM_RASCIIZ( "lremovexattr(name)", ARG2 );
}
PRE(sys_fremovexattr)
{
*flags |= SfMayBlock;
PRINT("sys_fremovexattr ( %d, %p )", ARG1, ARG2);
PRE_REG_READ2(long, "fremovexattr", int, fd, char *, name);
PRE_MEM_RASCIIZ( "fremovexattr(name)", ARG2 );
}
/* ---------------------------------------------------------------------
sched_* wrappers
------------------------------------------------------------------ */
PRE(sys_sched_setparam)
{
PRINT("sched_setparam ( %d, %p )", ARG1, ARG2 );
PRE_REG_READ2(long, "sched_setparam",
vki_pid_t, pid, struct sched_param *, p);
PRE_MEM_READ( "sched_setparam(p)", ARG2, sizeof(struct vki_sched_param) );
}
POST(sys_sched_setparam)
{
POST_MEM_WRITE( ARG2, sizeof(struct vki_sched_param) );
}
PRE(sys_sched_getparam)
{
PRINT("sched_getparam ( %d, %p )", ARG1, ARG2 );
PRE_REG_READ2(long, "sched_getparam",
vki_pid_t, pid, struct sched_param *, p);
PRE_MEM_WRITE( "sched_getparam(p)", ARG2, sizeof(struct vki_sched_param) );
}
POST(sys_sched_getparam)
{
POST_MEM_WRITE( ARG2, sizeof(struct vki_sched_param) );
}
PRE(sys_sched_getscheduler)
{
PRINT("sys_sched_getscheduler ( %d )", ARG1);
PRE_REG_READ1(long, "sched_getscheduler", vki_pid_t, pid);
}
PRE(sys_sched_setscheduler)
{
PRINT("sys_sched_setscheduler ( %d, %d, %p )", ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "sched_setscheduler",
vki_pid_t, pid, int, policy, struct sched_param *, p);
if (ARG3 != 0)
PRE_MEM_READ( "sched_setscheduler(p)",
ARG3, sizeof(struct vki_sched_param));
}
PRE(sys_sched_yield)
{
*flags |= SfMayBlock;
PRINT("sched_yield()");
PRE_REG_READ0(long, "sys_sched_yield");
}
PRE(sys_sched_get_priority_max)
{
PRINT("sched_get_priority_max ( %d )", ARG1);
PRE_REG_READ1(long, "sched_get_priority_max", int, policy);
}
PRE(sys_sched_get_priority_min)
{
PRINT("sched_get_priority_min ( %d )", ARG1);
PRE_REG_READ1(long, "sched_get_priority_min", int, policy);
}
PRE(sys_sched_setaffinity)
{
PRINT("sched_setaffinity ( %d, %d, %p )", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "sched_setaffinity",
vki_pid_t, pid, unsigned int, len, unsigned long *, mask);
PRE_MEM_READ( "sched_setaffinity(mask)", ARG3, ARG2);
}
PRE(sys_sched_getaffinity)
{
PRINT("sched_getaffinity ( %d, %d, %p )", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "sched_getaffinity",
vki_pid_t, pid, unsigned int, len, unsigned long *, mask);
PRE_MEM_WRITE( "sched_getaffinity(mask)", ARG3, ARG2);
}
POST(sys_sched_getaffinity)
{
POST_MEM_WRITE(ARG3, ARG2);
}
/* ---------------------------------------------------------------------
miscellaneous wrappers
------------------------------------------------------------------ */
PRE(sys_munlockall)
{
*flags |= SfMayBlock;
PRINT("sys_munlockall ( )");
PRE_REG_READ0(long, "munlockall");
}
// This has different signatures for different platforms.
//
// x86: int sys_pipe(unsigned long __user *fildes);
// AMD64: long sys_pipe(int *fildes);
// ppc32: int sys_pipe(int __user *fildes);
// ppc64: int sys_pipe(int __user *fildes);
//
// The type of the argument is most important, and it is an array of 32 bit
// values in all cases. (The return type differs across platforms, but it
// is not used.) So we use 'int' as its type. This fixed bug #113230 which
// was caused by using an array of 'unsigned long's, which didn't work on
// AMD64.
PRE(sys_pipe)
{
PRINT("sys_pipe ( %p )", ARG1);
PRE_REG_READ1(int, "pipe", int *, filedes);
PRE_MEM_WRITE( "pipe(filedes)", ARG1, 2*sizeof(int) );
}
POST(sys_pipe)
{
Int *p = (Int *)ARG1;
if (!ML_(fd_allowed)(p[0], "pipe", tid, True) ||
!ML_(fd_allowed)(p[1], "pipe", tid, True)) {
VG_(close)(p[0]);
VG_(close)(p[1]);
SET_STATUS_Failure( VKI_EMFILE );
} else {
POST_MEM_WRITE( ARG1, 2*sizeof(int) );
if (VG_(clo_track_fds)) {
ML_(record_fd_open_nameless)(tid, p[0]);
ML_(record_fd_open_nameless)(tid, p[1]);
}
}
}
PRE(sys_quotactl)
{
PRINT("sys_quotactl (0x%x, %p, 0x%x, 0x%x )", ARG1,ARG2,ARG3, ARG4);
PRE_REG_READ4(long, "quotactl",
unsigned int, cmd, const char *, special, vki_qid_t, id,
void *, addr);
PRE_MEM_RASCIIZ( "quotactl(special)", ARG2 );
}
PRE(sys_waitid)
{
*flags |= SfMayBlock;
PRINT("sys_waitid( %d, %d, %p, %d, %p )", ARG1,ARG2,ARG3,ARG4,ARG5);
PRE_REG_READ5(int32_t, "sys_waitid",
int, which, vki_pid_t, pid, struct vki_siginfo *, infop,
int, options, struct vki_rusage *, ru);
PRE_MEM_WRITE( "waitid(infop)", ARG3, sizeof(struct vki_siginfo) );
if (ARG5 != 0)
PRE_MEM_WRITE( "waitid(ru)", ARG5, sizeof(struct vki_rusage) );
}
POST(sys_waitid)
{
POST_MEM_WRITE( ARG3, sizeof(struct vki_siginfo) );
if (ARG5 != 0)
POST_MEM_WRITE( ARG5, sizeof(struct vki_rusage) );
}
/* ---------------------------------------------------------------------
utime wrapper
------------------------------------------------------------------ */
PRE(sys_utime)
{
*flags |= SfMayBlock;
PRINT("sys_utime ( %p, %p )", ARG1,ARG2);
PRE_REG_READ2(long, "utime", char *, filename, struct utimbuf *, buf);
PRE_MEM_RASCIIZ( "utime(filename)", ARG1 );
if (ARG2 != 0)
PRE_MEM_READ( "utime(buf)", ARG2, sizeof(struct vki_utimbuf) );
}
/* ---------------------------------------------------------------------
lseek wrapper
------------------------------------------------------------------ */
PRE(sys_lseek)
{
PRINT("sys_lseek ( %d, %d, %d )", ARG1,ARG2,ARG3);
PRE_REG_READ3(vki_off_t, "lseek",
unsigned int, fd, vki_off_t, offset, unsigned int, whence);
}
/* ---------------------------------------------------------------------
sig* wrappers
------------------------------------------------------------------ */
PRE(sys_sigpending)
{
PRINT( "sys_sigpending ( %p )", ARG1 );
PRE_REG_READ1(long, "sigpending", vki_old_sigset_t *, set);
PRE_MEM_WRITE( "sigpending(set)", ARG1, sizeof(vki_old_sigset_t));
}
POST(sys_sigpending)
{
POST_MEM_WRITE( ARG1, sizeof(vki_old_sigset_t) ) ;
}
// This syscall is not used on amd64/Linux -- it only provides
// sys_rt_sigprocmask, which uses sigset_t rather than old_sigset_t.
// This wrapper is only suitable for 32-bit architectures.
// (XXX: so how is it that PRE(sys_sigpending) above doesn't need
// conditional compilation like this?)
#if defined(VGP_x86_linux) || defined(VGP_ppc32_linux)
PRE(sys_sigprocmask)
{
vki_old_sigset_t* set;
vki_old_sigset_t* oldset;
vki_sigset_t bigger_set;
vki_sigset_t bigger_oldset;
PRINT("sys_sigprocmask ( %d, %p, %p )",ARG1,ARG2,ARG3);
PRE_REG_READ3(long, "sigprocmask",
int, how, vki_old_sigset_t *, set, vki_old_sigset_t *, oldset);
if (ARG2 != 0)
PRE_MEM_READ( "sigprocmask(set)", ARG2, sizeof(vki_old_sigset_t));
if (ARG3 != 0)
PRE_MEM_WRITE( "sigprocmask(oldset)", ARG3, sizeof(vki_old_sigset_t));
// Nb: We must convert the smaller vki_old_sigset_t params into bigger
// vki_sigset_t params.
set = (vki_old_sigset_t*)ARG2;
oldset = (vki_old_sigset_t*)ARG3;
VG_(memset)(&bigger_set, 0, sizeof(vki_sigset_t));
VG_(memset)(&bigger_oldset, 0, sizeof(vki_sigset_t));
if (set)
bigger_set.sig[0] = *(vki_old_sigset_t*)set;
SET_STATUS_from_SysRes(
VG_(do_sys_sigprocmask) ( tid, ARG1 /*how*/,
set ? &bigger_set : NULL,
oldset ? &bigger_oldset : NULL)
);
if (oldset)
*oldset = bigger_oldset.sig[0];
if (SUCCESS)
*flags |= SfPollAfter;
}
POST(sys_sigprocmask)
{
vg_assert(SUCCESS);
if (RES == 0 && ARG3 != 0)
POST_MEM_WRITE( ARG3, sizeof(vki_old_sigset_t));
}
#endif
/* ---------------------------------------------------------------------
rt_sig* wrappers
------------------------------------------------------------------ */
PRE(sys_rt_sigaction)
{
PRINT("sys_rt_sigaction ( %d, %p, %p, %d )", ARG1,ARG2,ARG3,ARG4);
PRE_REG_READ4(long, "rt_sigaction",
int, signum, const struct sigaction *, act,
struct sigaction *, oldact, vki_size_t, sigsetsize);
if (ARG2 != 0) {
struct vki_sigaction *sa = (struct vki_sigaction *)ARG2;
PRE_MEM_READ( "rt_sigaction(act->sa_handler)", (Addr)&sa->ksa_handler, sizeof(sa->ksa_handler));
PRE_MEM_READ( "rt_sigaction(act->sa_mask)", (Addr)&sa->sa_mask, sizeof(sa->sa_mask));
PRE_MEM_READ( "rt_sigaction(act->sa_flags)", (Addr)&sa->sa_flags, sizeof(sa->sa_flags));
if (sa->sa_flags & VKI_SA_RESTORER)
PRE_MEM_READ( "rt_sigaction(act->sa_restorer)", (Addr)&sa->sa_restorer, sizeof(sa->sa_restorer));
}
if (ARG3 != 0)
PRE_MEM_WRITE( "rt_sigaction(oldact)", ARG3, sizeof(struct vki_sigaction));
// XXX: doesn't seem right to be calling do_sys_sigaction for
// sys_rt_sigaction... perhaps this function should be renamed
// VG_(do_sys_rt_sigaction)() --njn
SET_STATUS_from_SysRes(
VG_(do_sys_sigaction)(ARG1, (const struct vki_sigaction *)ARG2,
(struct vki_sigaction *)ARG3)
);
}
POST(sys_rt_sigaction)
{
vg_assert(SUCCESS);
if (RES == 0 && ARG3 != 0)
POST_MEM_WRITE( ARG3, sizeof(struct vki_sigaction));
}
PRE(sys_rt_sigprocmask)
{
PRINT("sys_rt_sigprocmask ( %d, %p, %p, %llu )",ARG1,ARG2,ARG3,(ULong)ARG4);
PRE_REG_READ4(long, "rt_sigprocmask",
int, how, vki_sigset_t *, set, vki_sigset_t *, oldset,
vki_size_t, sigsetsize);
if (ARG2 != 0)
PRE_MEM_READ( "rt_sigprocmask(set)", ARG2, sizeof(vki_sigset_t));
if (ARG3 != 0)
PRE_MEM_WRITE( "rt_sigprocmask(oldset)", ARG3, sizeof(vki_sigset_t));
// Like the kernel, we fail if the sigsetsize is not exactly what we expect.
if (sizeof(vki_sigset_t) != ARG4)
SET_STATUS_Failure( VKI_EMFILE );
else {
SET_STATUS_from_SysRes(
VG_(do_sys_sigprocmask) ( tid, ARG1 /*how*/,
(vki_sigset_t*) ARG2,
(vki_sigset_t*) ARG3 )
);
}
if (SUCCESS)
*flags |= SfPollAfter;
}
POST(sys_rt_sigprocmask)
{
vg_assert(SUCCESS);
if (RES == 0 && ARG3 != 0)
POST_MEM_WRITE( ARG3, sizeof(vki_sigset_t));
}
PRE(sys_rt_sigpending)
{
PRINT( "sys_rt_sigpending ( %p )", ARG1 );
PRE_REG_READ2(long, "rt_sigpending",
vki_sigset_t *, set, vki_size_t, sigsetsize);
PRE_MEM_WRITE( "rt_sigpending(set)", ARG1, sizeof(vki_sigset_t));
}
POST(sys_rt_sigpending)
{
POST_MEM_WRITE( ARG1, sizeof(vki_sigset_t) ) ;
}
PRE(sys_rt_sigtimedwait)
{
*flags |= SfMayBlock;
PRINT("sys_rt_sigtimedwait ( %p, %p, %p, %lld )",
ARG1,ARG2,ARG3,(ULong)ARG4);
PRE_REG_READ4(long, "rt_sigtimedwait",
const vki_sigset_t *, set, vki_siginfo_t *, info,
const struct timespec *, timeout, vki_size_t, sigsetsize);
if (ARG1 != 0)
PRE_MEM_READ( "rt_sigtimedwait(set)", ARG1, sizeof(vki_sigset_t));
if (ARG2 != 0)
PRE_MEM_WRITE( "rt_sigtimedwait(info)", ARG2, sizeof(vki_siginfo_t) );
if (ARG3 != 0)
PRE_MEM_READ( "rt_sigtimedwait(timeout)",
ARG3, sizeof(struct vki_timespec) );
}
POST(sys_rt_sigtimedwait)
{
if (ARG2 != 0)
POST_MEM_WRITE( ARG2, sizeof(vki_siginfo_t) );
}
PRE(sys_rt_sigqueueinfo)
{
PRINT("sys_rt_sigqueueinfo(%d, %d, %p)", ARG1, ARG2, ARG3);
PRE_REG_READ3(long, "rt_sigqueueinfo",
int, pid, int, sig, vki_siginfo_t *, uinfo);
if (ARG2 != 0)
PRE_MEM_READ( "rt_sigqueueinfo(uinfo)", ARG3, sizeof(vki_siginfo_t) );
}
POST(sys_rt_sigqueueinfo)
{
if (!ML_(client_signal_OK)(ARG2))
SET_STATUS_Failure( VKI_EINVAL );
}
// XXX: x86-specific? The kernel prototypes for the different archs are
// hard to decipher.
PRE(sys_rt_sigsuspend)
{
/* The C library interface to sigsuspend just takes a pointer to
a signal mask but this system call has two arguments - a pointer
to the mask and the number of bytes used by it. The kernel insists
on the size being equal to sizeof(sigset_t) however and will just
return EINVAL if it isn't.
*/
*flags |= SfMayBlock;
PRINT("sys_rt_sigsuspend ( %p, %d )", ARG1,ARG2 );
PRE_REG_READ2(int, "rt_sigsuspend", vki_sigset_t *, mask, vki_size_t, size)
if (ARG1 != (Addr)NULL) {
PRE_MEM_READ( "rt_sigsuspend(mask)", ARG1, sizeof(vki_sigset_t) );
}
}
/* ---------------------------------------------------------------------
linux msg* wrapper helpers
------------------------------------------------------------------ */
void
ML_(linux_PRE_sys_msgsnd) ( ThreadId tid,
UWord arg0, UWord arg1, UWord arg2, UWord arg3 )
{
/* int msgsnd(int msqid, struct msgbuf *msgp, size_t msgsz, int msgflg); */
struct vki_msgbuf *msgp = (struct vki_msgbuf *)arg1;
PRE_MEM_READ( "msgsnd(msgp->mtype)", (Addr)&msgp->mtype, sizeof(msgp->mtype) );
PRE_MEM_READ( "msgsnd(msgp->mtext)", (Addr)&msgp->mtext, arg2 );
}
void
ML_(linux_PRE_sys_msgrcv) ( ThreadId tid,
UWord arg0, UWord arg1, UWord arg2,
UWord arg3, UWord arg4 )
{
/* ssize_t msgrcv(int msqid, struct msgbuf *msgp, size_t msgsz,
long msgtyp, int msgflg); */
struct vki_msgbuf *msgp = (struct vki_msgbuf *)arg1;
PRE_MEM_WRITE( "msgrcv(msgp->mtype)", (Addr)&msgp->mtype, sizeof(msgp->mtype) );
PRE_MEM_WRITE( "msgrcv(msgp->mtext)", (Addr)&msgp->mtext, arg2 );
}
void
ML_(linux_POST_sys_msgrcv) ( ThreadId tid,
UWord res,
UWord arg0, UWord arg1, UWord arg2,
UWord arg3, UWord arg4 )
{
struct vki_msgbuf *msgp = (struct vki_msgbuf *)arg1;
POST_MEM_WRITE( (Addr)&msgp->mtype, sizeof(msgp->mtype) );
POST_MEM_WRITE( (Addr)&msgp->mtext, res );
}
void
ML_(linux_PRE_sys_msgctl) ( ThreadId tid,
UWord arg0, UWord arg1, UWord arg2 )
{
/* int msgctl(int msqid, int cmd, struct msqid_ds *buf); */
switch (arg1 /* cmd */) {
case VKI_IPC_INFO:
case VKI_MSG_INFO:
case VKI_IPC_INFO|VKI_IPC_64:
case VKI_MSG_INFO|VKI_IPC_64:
PRE_MEM_WRITE( "msgctl(IPC_INFO, buf)",
arg2, sizeof(struct vki_msginfo) );
break;
case VKI_IPC_STAT:
case VKI_MSG_STAT:
PRE_MEM_WRITE( "msgctl(IPC_STAT, buf)",
arg2, sizeof(struct vki_msqid_ds) );
break;
case VKI_IPC_STAT|VKI_IPC_64:
case VKI_MSG_STAT|VKI_IPC_64:
PRE_MEM_WRITE( "msgctl(IPC_STAT, arg.buf)",
arg2, sizeof(struct vki_msqid64_ds) );
break;
case VKI_IPC_SET:
PRE_MEM_READ( "msgctl(IPC_SET, arg.buf)",
arg2, sizeof(struct vki_msqid_ds) );
break;
case VKI_IPC_SET|VKI_IPC_64:
PRE_MEM_READ( "msgctl(IPC_SET, arg.buf)",
arg2, sizeof(struct vki_msqid64_ds) );
break;
}
}
void
ML_(linux_POST_sys_msgctl) ( ThreadId tid,
UWord res,
UWord arg0, UWord arg1, UWord arg2 )
{
switch (arg1 /* cmd */) {
case VKI_IPC_INFO:
case VKI_MSG_INFO:
case VKI_IPC_INFO|VKI_IPC_64:
case VKI_MSG_INFO|VKI_IPC_64:
POST_MEM_WRITE( arg2, sizeof(struct vki_msginfo) );
break;
case VKI_IPC_STAT:
case VKI_MSG_STAT:
POST_MEM_WRITE( arg2, sizeof(struct vki_msqid_ds) );
break;
case VKI_IPC_STAT|VKI_IPC_64:
case VKI_MSG_STAT|VKI_IPC_64:
POST_MEM_WRITE( arg2, sizeof(struct vki_msqid64_ds) );
break;
}
}
#undef PRE
#undef POST
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/