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process.c
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/*
* Copyright (c) 1991, 1992 Paul Kranenburg <[email protected]>
* Copyright (c) 1993 Branko Lankester <[email protected]>
* Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <[email protected]>
* Copyright (c) 1996-1999 Wichert Akkerman <[email protected]>
* Copyright (c) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Linux for s390 port by D.J. Barrow
* Copyright (c) 2000 PocketPenguins Inc. Linux for Hitachi SuperH
* port by Greg Banks <[email protected]>
*
* 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>
#ifdef HAVE_ELF_H
# include <elf.h>
#endif
#ifdef HAVE_SYS_REG_H
# include <sys/reg.h>
#endif
#ifdef HAVE_LINUX_PTRACE_H
# undef PTRACE_SYSCALL
# ifdef HAVE_STRUCT_IA64_FPREG
# define ia64_fpreg XXX_ia64_fpreg
# endif
# ifdef HAVE_STRUCT_PT_ALL_USER_REGS
# define pt_all_user_regs XXX_pt_all_user_regs
# endif
# ifdef HAVE_STRUCT_PTRACE_PEEKSIGINFO_ARGS
# define ptrace_peeksiginfo_args XXX_ptrace_peeksiginfo_args
# endif
# include <linux/ptrace.h>
# undef ptrace_peeksiginfo_args
# undef ia64_fpreg
# undef pt_all_user_regs
#endif
#if defined(SPARC64)
# define r_pc r_tpc
# undef PTRACE_GETREGS
# define PTRACE_GETREGS PTRACE_GETREGS64
# undef PTRACE_SETREGS
# define PTRACE_SETREGS PTRACE_SETREGS64
#endif
#ifdef HAVE_LINUX_FUTEX_H
# include <linux/futex.h>
#endif
#ifndef FUTEX_WAIT
# define FUTEX_WAIT 0
#endif
#ifndef FUTEX_WAKE
# define FUTEX_WAKE 1
#endif
#ifndef FUTEX_FD
# define FUTEX_FD 2
#endif
#ifndef FUTEX_REQUEUE
# define FUTEX_REQUEUE 3
#endif
#include <sched.h>
#include <asm/posix_types.h>
#undef GETGROUPS_T
#define GETGROUPS_T __kernel_gid_t
#undef GETGROUPS32_T
#define GETGROUPS32_T __kernel_gid32_t
#if defined(IA64)
# include <asm/ptrace_offsets.h>
# include <asm/rse.h>
#endif
#ifdef HAVE_PRCTL
# include <sys/prctl.h>
static const struct xlat prctl_options[] = {
#ifdef PR_MAXPROCS
XLAT(PR_MAXPROCS),
#endif
#ifdef PR_ISBLOCKED
XLAT(PR_ISBLOCKED),
#endif
#ifdef PR_SETSTACKSIZE
XLAT(PR_SETSTACKSIZE),
#endif
#ifdef PR_GETSTACKSIZE
XLAT(PR_GETSTACKSIZE),
#endif
#ifdef PR_MAXPPROCS
XLAT(PR_MAXPPROCS),
#endif
#ifdef PR_UNBLKONEXEC
XLAT(PR_UNBLKONEXEC),
#endif
#ifdef PR_ATOMICSIM
XLAT(PR_ATOMICSIM),
#endif
#ifdef PR_SETEXITSIG
XLAT(PR_SETEXITSIG),
#endif
#ifdef PR_RESIDENT
XLAT(PR_RESIDENT),
#endif
#ifdef PR_ATTACHADDR
XLAT(PR_ATTACHADDR),
#endif
#ifdef PR_DETACHADDR
XLAT(PR_DETACHADDR),
#endif
#ifdef PR_TERMCHILD
XLAT(PR_TERMCHILD),
#endif
#ifdef PR_GETSHMASK
XLAT(PR_GETSHMASK),
#endif
#ifdef PR_GETNSHARE
XLAT(PR_GETNSHARE),
#endif
#ifdef PR_COREPID
XLAT(PR_COREPID),
#endif
#ifdef PR_ATTACHADDRPERM
XLAT(PR_ATTACHADDRPERM),
#endif
#ifdef PR_PTHREADEXIT
XLAT(PR_PTHREADEXIT),
#endif
#ifdef PR_SET_PDEATHSIG
XLAT(PR_SET_PDEATHSIG),
#endif
#ifdef PR_GET_PDEATHSIG
XLAT(PR_GET_PDEATHSIG),
#endif
#ifdef PR_GET_DUMPABLE
XLAT(PR_GET_DUMPABLE),
#endif
#ifdef PR_SET_DUMPABLE
XLAT(PR_SET_DUMPABLE),
#endif
#ifdef PR_GET_UNALIGN
XLAT(PR_GET_UNALIGN),
#endif
#ifdef PR_SET_UNALIGN
XLAT(PR_SET_UNALIGN),
#endif
#ifdef PR_GET_KEEPCAPS
XLAT(PR_GET_KEEPCAPS),
#endif
#ifdef PR_SET_KEEPCAPS
XLAT(PR_SET_KEEPCAPS),
#endif
#ifdef PR_GET_FPEMU
XLAT(PR_GET_FPEMU),
#endif
#ifdef PR_SET_FPEMU
XLAT(PR_SET_FPEMU),
#endif
#ifdef PR_GET_FPEXC
XLAT(PR_GET_FPEXC),
#endif
#ifdef PR_SET_FPEXC
XLAT(PR_SET_FPEXC),
#endif
#ifdef PR_GET_TIMING
XLAT(PR_GET_TIMING),
#endif
#ifdef PR_SET_TIMING
XLAT(PR_SET_TIMING),
#endif
#ifdef PR_SET_NAME
XLAT(PR_SET_NAME),
#endif
#ifdef PR_GET_NAME
XLAT(PR_GET_NAME),
#endif
#ifdef PR_GET_ENDIAN
XLAT(PR_GET_ENDIAN),
#endif
#ifdef PR_SET_ENDIAN
XLAT(PR_SET_ENDIAN),
#endif
#ifdef PR_GET_SECCOMP
XLAT(PR_GET_SECCOMP),
#endif
#ifdef PR_SET_SECCOMP
XLAT(PR_SET_SECCOMP),
#endif
#ifdef PR_CAPBSET_READ
XLAT(PR_CAPBSET_READ),
#endif
#ifdef PR_CAPBSET_DROP
XLAT(PR_CAPBSET_DROP),
#endif
#ifdef PR_GET_TSC
XLAT(PR_GET_TSC),
#endif
#ifdef PR_SET_TSC
XLAT(PR_SET_TSC),
#endif
#ifdef PR_GET_SECUREBITS
XLAT(PR_GET_SECUREBITS),
#endif
#ifdef PR_SET_SECUREBITS
XLAT(PR_SET_SECUREBITS),
#endif
#ifdef PR_SET_TIMERSLACK
XLAT(PR_SET_TIMERSLACK),
#endif
#ifdef PR_GET_TIMERSLACK
XLAT(PR_GET_TIMERSLACK),
#endif
#ifdef PR_TASK_PERF_EVENTS_DISABLE
XLAT(PR_TASK_PERF_EVENTS_DISABLE),
#endif
#ifdef PR_TASK_PERF_EVENTS_ENABLE
XLAT(PR_TASK_PERF_EVENTS_ENABLE),
#endif
#ifdef PR_MCE_KILL
XLAT(PR_MCE_KILL),
#endif
#ifdef PR_MCE_KILL_GET
XLAT(PR_MCE_KILL_GET),
#endif
#ifdef PR_SET_MM
XLAT(PR_SET_MM),
#endif
#ifdef PR_SET_PTRACER
XLAT(PR_SET_PTRACER),
#endif
#ifdef PR_SET_CHILD_SUBREAPER
XLAT(PR_SET_CHILD_SUBREAPER),
#endif
#ifdef PR_GET_CHILD_SUBREAPER
XLAT(PR_GET_CHILD_SUBREAPER),
#endif
#ifdef PR_SET_NO_NEW_PRIVS
XLAT(PR_SET_NO_NEW_PRIVS),
#endif
#ifdef PR_GET_NO_NEW_PRIVS
XLAT(PR_GET_NO_NEW_PRIVS),
#endif
#ifdef PR_GET_TID_ADDRESS
XLAT(PR_GET_TID_ADDRESS),
#endif
XLAT_END
};
static const char *
unalignctl_string(unsigned int ctl)
{
static char buf[sizeof(int)*2 + 2];
switch (ctl) {
#ifdef PR_UNALIGN_NOPRINT
case PR_UNALIGN_NOPRINT:
return "NOPRINT";
#endif
#ifdef PR_UNALIGN_SIGBUS
case PR_UNALIGN_SIGBUS:
return "SIGBUS";
#endif
default:
break;
}
sprintf(buf, "%x", ctl);
return buf;
}
int
sys_prctl(struct tcb *tcp)
{
int i;
if (entering(tcp)) {
printxval(prctl_options, tcp->u_arg[0], "PR_???");
switch (tcp->u_arg[0]) {
#ifdef PR_GETNSHARE
case PR_GETNSHARE:
break;
#endif
#ifdef PR_SET_PDEATHSIG
case PR_SET_PDEATHSIG:
tprintf(", %lu", tcp->u_arg[1]);
break;
#endif
#ifdef PR_GET_PDEATHSIG
case PR_GET_PDEATHSIG:
break;
#endif
#ifdef PR_SET_DUMPABLE
case PR_SET_DUMPABLE:
tprintf(", %lu", tcp->u_arg[1]);
break;
#endif
#ifdef PR_GET_DUMPABLE
case PR_GET_DUMPABLE:
break;
#endif
#ifdef PR_SET_UNALIGN
case PR_SET_UNALIGN:
tprintf(", %s", unalignctl_string(tcp->u_arg[1]));
break;
#endif
#ifdef PR_GET_UNALIGN
case PR_GET_UNALIGN:
tprintf(", %#lx", tcp->u_arg[1]);
break;
#endif
#ifdef PR_SET_KEEPCAPS
case PR_SET_KEEPCAPS:
tprintf(", %lu", tcp->u_arg[1]);
break;
#endif
#ifdef PR_GET_KEEPCAPS
case PR_GET_KEEPCAPS:
break;
#endif
default:
for (i = 1; i < tcp->s_ent->nargs; i++)
tprintf(", %#lx", tcp->u_arg[i]);
break;
}
} else {
switch (tcp->u_arg[0]) {
#ifdef PR_GET_PDEATHSIG
case PR_GET_PDEATHSIG:
if (umove(tcp, tcp->u_arg[1], &i) < 0)
tprintf(", %#lx", tcp->u_arg[1]);
else
tprintf(", {%u}", i);
break;
#endif
#ifdef PR_GET_DUMPABLE
case PR_GET_DUMPABLE:
return RVAL_UDECIMAL;
#endif
#ifdef PR_GET_UNALIGN
case PR_GET_UNALIGN:
if (syserror(tcp) || umove(tcp, tcp->u_arg[1], &i) < 0)
break;
tcp->auxstr = unalignctl_string(i);
return RVAL_STR;
#endif
#ifdef PR_GET_KEEPCAPS
case PR_GET_KEEPCAPS:
return RVAL_UDECIMAL;
#endif
default:
break;
}
}
return 0;
}
#endif /* HAVE_PRCTL */
int
sys_sethostname(struct tcb *tcp)
{
if (entering(tcp)) {
printpathn(tcp, tcp->u_arg[0], tcp->u_arg[1]);
tprintf(", %lu", tcp->u_arg[1]);
}
return 0;
}
#if defined(ALPHA)
int
sys_gethostname(struct tcb *tcp)
{
if (exiting(tcp)) {
if (syserror(tcp))
tprintf("%#lx", tcp->u_arg[0]);
else
printpath(tcp, tcp->u_arg[0]);
tprintf(", %lu", tcp->u_arg[1]);
}
return 0;
}
#endif
int
sys_setdomainname(struct tcb *tcp)
{
if (entering(tcp)) {
printpathn(tcp, tcp->u_arg[0], tcp->u_arg[1]);
tprintf(", %lu", tcp->u_arg[1]);
}
return 0;
}
int
sys_exit(struct tcb *tcp)
{
if (exiting(tcp)) {
fprintf(stderr, "_exit returned!\n");
return -1;
}
/* special case: we stop tracing this process, finish line now */
tprintf("%ld) ", tcp->u_arg[0]);
tabto();
tprints("= ?\n");
line_ended();
return 0;
}
/* defines copied from linux/sched.h since we can't include that
* ourselves (it conflicts with *lots* of libc includes)
*/
#define CSIGNAL 0x000000ff /* signal mask to be sent at exit */
#define CLONE_VM 0x00000100 /* set if VM shared between processes */
#define CLONE_FS 0x00000200 /* set if fs info shared between processes */
#define CLONE_FILES 0x00000400 /* set if open files shared between processes */
#define CLONE_SIGHAND 0x00000800 /* set if signal handlers shared */
#define CLONE_IDLETASK 0x00001000 /* kernel-only flag */
#define CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */
#define CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */
#define CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */
#define CLONE_THREAD 0x00010000 /* Same thread group? */
#define CLONE_NEWNS 0x00020000 /* New namespace group? */
#define CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */
#define CLONE_SETTLS 0x00080000 /* create a new TLS for the child */
#define CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */
#define CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */
#define CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force CLONE_PTRACE on this clone */
#define CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */
#define CLONE_STOPPED 0x02000000 /* Start in stopped state */
#define CLONE_NEWUTS 0x04000000 /* New utsname group? */
#define CLONE_NEWIPC 0x08000000 /* New ipcs */
#define CLONE_NEWUSER 0x10000000 /* New user namespace */
#define CLONE_NEWPID 0x20000000 /* New pid namespace */
#define CLONE_NEWNET 0x40000000 /* New network namespace */
#define CLONE_IO 0x80000000 /* Clone io context */
static const struct xlat clone_flags[] = {
XLAT(CLONE_VM),
XLAT(CLONE_FS),
XLAT(CLONE_FILES),
XLAT(CLONE_SIGHAND),
XLAT(CLONE_IDLETASK),
XLAT(CLONE_PTRACE),
XLAT(CLONE_VFORK),
XLAT(CLONE_PARENT),
XLAT(CLONE_THREAD),
XLAT(CLONE_NEWNS),
XLAT(CLONE_SYSVSEM),
XLAT(CLONE_SETTLS),
XLAT(CLONE_PARENT_SETTID),
XLAT(CLONE_CHILD_CLEARTID),
XLAT(CLONE_UNTRACED),
XLAT(CLONE_CHILD_SETTID),
XLAT(CLONE_STOPPED),
XLAT(CLONE_NEWUTS),
XLAT(CLONE_NEWIPC),
XLAT(CLONE_NEWUSER),
XLAT(CLONE_NEWPID),
XLAT(CLONE_NEWNET),
XLAT(CLONE_IO),
XLAT_END
};
#ifdef I386
# include <asm/ldt.h>
# ifdef HAVE_STRUCT_USER_DESC
# define modify_ldt_ldt_s user_desc
# endif
extern void print_ldt_entry();
#endif
#if defined IA64
# define ARG_FLAGS 0
# define ARG_STACK 1
# define ARG_STACKSIZE (tcp->scno == SYS_clone2 ? 2 : -1)
# define ARG_PTID (tcp->scno == SYS_clone2 ? 3 : 2)
# define ARG_CTID (tcp->scno == SYS_clone2 ? 4 : 3)
# define ARG_TLS (tcp->scno == SYS_clone2 ? 5 : 4)
#elif defined S390 || defined S390X || defined CRISV10 || defined CRISV32
# define ARG_STACK 0
# define ARG_FLAGS 1
# define ARG_PTID 2
# define ARG_CTID 3
# define ARG_TLS 4
#elif defined X86_64 || defined X32 || defined ALPHA || defined TILE \
|| defined OR1K
# define ARG_FLAGS 0
# define ARG_STACK 1
# define ARG_PTID 2
# define ARG_CTID 3
# define ARG_TLS 4
#else
# define ARG_FLAGS 0
# define ARG_STACK 1
# define ARG_PTID 2
# define ARG_TLS 3
# define ARG_CTID 4
#endif
int
sys_clone(struct tcb *tcp)
{
if (exiting(tcp)) {
const char *sep = "|";
unsigned long flags = tcp->u_arg[ARG_FLAGS];
tprintf("child_stack=%#lx, ", tcp->u_arg[ARG_STACK]);
#ifdef ARG_STACKSIZE
if (ARG_STACKSIZE != -1)
tprintf("stack_size=%#lx, ",
tcp->u_arg[ARG_STACKSIZE]);
#endif
tprints("flags=");
if (!printflags(clone_flags, flags &~ CSIGNAL, NULL))
sep = "";
if ((flags & CSIGNAL) != 0)
tprintf("%s%s", sep, signame(flags & CSIGNAL));
if ((flags & (CLONE_PARENT_SETTID|CLONE_CHILD_SETTID
|CLONE_CHILD_CLEARTID|CLONE_SETTLS)) == 0)
return 0;
if (flags & CLONE_PARENT_SETTID)
tprintf(", parent_tidptr=%#lx", tcp->u_arg[ARG_PTID]);
if (flags & CLONE_SETTLS) {
#ifdef I386
struct modify_ldt_ldt_s copy;
if (umove(tcp, tcp->u_arg[ARG_TLS], ©) != -1) {
tprintf(", {entry_number:%d, ",
copy.entry_number);
if (!verbose(tcp))
tprints("...}");
else
print_ldt_entry(©);
}
else
#endif
tprintf(", tls=%#lx", tcp->u_arg[ARG_TLS]);
}
if (flags & (CLONE_CHILD_SETTID|CLONE_CHILD_CLEARTID))
tprintf(", child_tidptr=%#lx", tcp->u_arg[ARG_CTID]);
}
/* TODO on syscall entry:
* We can clear CLONE_PTRACE here since it is an ancient hack
* to allow us to catch children, and we use another hack for that.
* But CLONE_PTRACE can conceivably be used by malicious programs
* to subvert us. By clearing this bit, we can defend against it:
* in untraced execution, CLONE_PTRACE should have no effect.
*
* We can also clear CLONE_UNTRACED, since it allows to start
* children outside of our control. At the moment
* I'm trying to figure out whether there is a *legitimate*
* use of this flag which we should respect.
*/
return 0;
}
int
sys_unshare(struct tcb *tcp)
{
if (entering(tcp))
printflags(clone_flags, tcp->u_arg[0], "CLONE_???");
return 0;
}
int
sys_fork(struct tcb *tcp)
{
if (exiting(tcp))
return RVAL_UDECIMAL;
return 0;
}
int
sys_vfork(struct tcb *tcp)
{
if (exiting(tcp))
return RVAL_UDECIMAL;
return 0;
}
int sys_getuid(struct tcb *tcp)
{
if (exiting(tcp))
tcp->u_rval = (uid_t) tcp->u_rval;
return RVAL_UDECIMAL;
}
int sys_setfsuid(struct tcb *tcp)
{
if (entering(tcp))
tprintf("%u", (uid_t) tcp->u_arg[0]);
else
tcp->u_rval = (uid_t) tcp->u_rval;
return RVAL_UDECIMAL;
}
int
sys_setuid(struct tcb *tcp)
{
if (entering(tcp)) {
tprintf("%u", (uid_t) tcp->u_arg[0]);
}
return 0;
}
int
sys_getresuid(struct tcb *tcp)
{
if (exiting(tcp)) {
__kernel_uid_t uid;
if (syserror(tcp))
tprintf("%#lx, %#lx, %#lx", tcp->u_arg[0],
tcp->u_arg[1], tcp->u_arg[2]);
else {
if (umove(tcp, tcp->u_arg[0], &uid) < 0)
tprintf("%#lx, ", tcp->u_arg[0]);
else
tprintf("[%lu], ", (unsigned long) uid);
if (umove(tcp, tcp->u_arg[1], &uid) < 0)
tprintf("%#lx, ", tcp->u_arg[1]);
else
tprintf("[%lu], ", (unsigned long) uid);
if (umove(tcp, tcp->u_arg[2], &uid) < 0)
tprintf("%#lx", tcp->u_arg[2]);
else
tprintf("[%lu]", (unsigned long) uid);
}
}
return 0;
}
int
sys_setreuid(struct tcb *tcp)
{
if (entering(tcp)) {
printuid("", tcp->u_arg[0]);
printuid(", ", tcp->u_arg[1]);
}
return 0;
}
int
sys_setresuid(struct tcb *tcp)
{
if (entering(tcp)) {
printuid("", tcp->u_arg[0]);
printuid(", ", tcp->u_arg[1]);
printuid(", ", tcp->u_arg[2]);
}
return 0;
}
int
sys_setgroups(struct tcb *tcp)
{
if (entering(tcp)) {
unsigned long len, size, start, cur, end, abbrev_end;
GETGROUPS_T gid;
int failed = 0;
len = tcp->u_arg[0];
tprintf("%lu, ", len);
if (len == 0) {
tprints("[]");
return 0;
}
start = tcp->u_arg[1];
if (start == 0) {
tprints("NULL");
return 0;
}
size = len * sizeof(gid);
end = start + size;
if (!verbose(tcp) || size / sizeof(gid) != len || end < start) {
tprintf("%#lx", start);
return 0;
}
if (abbrev(tcp)) {
abbrev_end = start + max_strlen * sizeof(gid);
if (abbrev_end < start)
abbrev_end = end;
} else {
abbrev_end = end;
}
tprints("[");
for (cur = start; cur < end; cur += sizeof(gid)) {
if (cur > start)
tprints(", ");
if (cur >= abbrev_end) {
tprints("...");
break;
}
if (umoven(tcp, cur, sizeof(gid), (char *) &gid) < 0) {
tprints("?");
failed = 1;
break;
}
tprintf("%lu", (unsigned long) gid);
}
tprints("]");
if (failed)
tprintf(" %#lx", tcp->u_arg[1]);
}
return 0;
}
int
sys_getgroups(struct tcb *tcp)
{
unsigned long len;
if (entering(tcp)) {
len = tcp->u_arg[0];
tprintf("%lu, ", len);
} else {
unsigned long size, start, cur, end, abbrev_end;
GETGROUPS_T gid;
int failed = 0;
len = tcp->u_rval;
if (len == 0) {
tprints("[]");
return 0;
}
start = tcp->u_arg[1];
if (start == 0) {
tprints("NULL");
return 0;
}
if (tcp->u_arg[0] == 0) {
tprintf("%#lx", start);
return 0;
}
size = len * sizeof(gid);
end = start + size;
if (!verbose(tcp) || tcp->u_arg[0] == 0 ||
size / sizeof(gid) != len || end < start) {
tprintf("%#lx", start);
return 0;
}
if (abbrev(tcp)) {
abbrev_end = start + max_strlen * sizeof(gid);
if (abbrev_end < start)
abbrev_end = end;
} else {
abbrev_end = end;
}
tprints("[");
for (cur = start; cur < end; cur += sizeof(gid)) {
if (cur > start)
tprints(", ");
if (cur >= abbrev_end) {
tprints("...");
break;
}
if (umoven(tcp, cur, sizeof(gid), (char *) &gid) < 0) {
tprints("?");
failed = 1;
break;
}
tprintf("%lu", (unsigned long) gid);
}
tprints("]");
if (failed)
tprintf(" %#lx", tcp->u_arg[1]);
}
return 0;
}
int
sys_setgroups32(struct tcb *tcp)
{
if (entering(tcp)) {
unsigned long len, size, start, cur, end, abbrev_end;
GETGROUPS32_T gid;
int failed = 0;
len = tcp->u_arg[0];
tprintf("%lu, ", len);
if (len == 0) {
tprints("[]");
return 0;
}
start = tcp->u_arg[1];
if (start == 0) {
tprints("NULL");
return 0;
}
size = len * sizeof(gid);
end = start + size;
if (!verbose(tcp) || size / sizeof(gid) != len || end < start) {
tprintf("%#lx", start);
return 0;
}
if (abbrev(tcp)) {
abbrev_end = start + max_strlen * sizeof(gid);
if (abbrev_end < start)
abbrev_end = end;
} else {
abbrev_end = end;
}
tprints("[");
for (cur = start; cur < end; cur += sizeof(gid)) {
if (cur > start)
tprints(", ");
if (cur >= abbrev_end) {
tprints("...");
break;
}
if (umoven(tcp, cur, sizeof(gid), (char *) &gid) < 0) {
tprints("?");
failed = 1;
break;
}
tprintf("%lu", (unsigned long) gid);
}
tprints("]");
if (failed)
tprintf(" %#lx", tcp->u_arg[1]);
}
return 0;
}
int
sys_getgroups32(struct tcb *tcp)
{
unsigned long len;
if (entering(tcp)) {
len = tcp->u_arg[0];
tprintf("%lu, ", len);
} else {
unsigned long size, start, cur, end, abbrev_end;
GETGROUPS32_T gid;
int failed = 0;
len = tcp->u_rval;
if (len == 0) {
tprints("[]");
return 0;
}
start = tcp->u_arg[1];
if (start == 0) {
tprints("NULL");
return 0;
}
size = len * sizeof(gid);
end = start + size;
if (!verbose(tcp) || tcp->u_arg[0] == 0 ||
size / sizeof(gid) != len || end < start) {
tprintf("%#lx", start);
return 0;
}
if (abbrev(tcp)) {
abbrev_end = start + max_strlen * sizeof(gid);
if (abbrev_end < start)
abbrev_end = end;
} else {
abbrev_end = end;
}
tprints("[");
for (cur = start; cur < end; cur += sizeof(gid)) {
if (cur > start)
tprints(", ");
if (cur >= abbrev_end) {
tprints("...");
break;
}
if (umoven(tcp, cur, sizeof(gid), (char *) &gid) < 0) {
tprints("?");
failed = 1;
break;
}
tprintf("%lu", (unsigned long) gid);
}
tprints("]");
if (failed)
tprintf(" %#lx", tcp->u_arg[1]);
}
return 0;
}
static void
printargv(struct tcb *tcp, long addr)
{
union {
unsigned int p32;
unsigned long p64;
char data[sizeof(long)];
} cp;
const char *sep;
int n = 0;
unsigned wordsize = current_wordsize;
cp.p64 = 1;
for (sep = ""; !abbrev(tcp) || n < max_strlen / 2; sep = ", ", ++n) {
if (umoven(tcp, addr, wordsize, cp.data) < 0) {
tprintf("%#lx", addr);
return;
}
if (wordsize == 4)
cp.p64 = cp.p32;
if (cp.p64 == 0)
break;
tprints(sep);
printstr(tcp, cp.p64, -1);
addr += wordsize;
}
if (cp.p64)
tprintf("%s...", sep);
}
static void
printargc(const char *fmt, struct tcb *tcp, long addr)
{
int count;
char *cp;
for (count = 0; umove(tcp, addr, &cp) >= 0 && cp != NULL; count++) {
addr += sizeof(char *);
}
tprintf(fmt, count, count == 1 ? "" : "s");
}
#if defined(SPARC) || defined(SPARC64)
int
sys_execv(struct tcb *tcp)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
if (!verbose(tcp))
tprintf(", %#lx", tcp->u_arg[1]);
else {
tprints(", [");
printargv(tcp, tcp->u_arg[1]);
tprints("]");
}
}
return 0;
}
#endif
int
sys_execve(struct tcb *tcp)
{
if (entering(tcp)) {
printpath(tcp, tcp->u_arg[0]);
if (!verbose(tcp))
tprintf(", %#lx", tcp->u_arg[1]);
else {
tprints(", [");
printargv(tcp, tcp->u_arg[1]);
tprints("]");
}
if (!verbose(tcp))
tprintf(", %#lx", tcp->u_arg[2]);
else if (abbrev(tcp))
printargc(", [/* %d var%s */]", tcp, tcp->u_arg[2]);
else {
tprints(", [");
printargv(tcp, tcp->u_arg[2]);
tprints("]");
}
}
return 0;
}
#ifndef __WNOTHREAD
#define __WNOTHREAD 0x20000000
#endif
#ifndef __WALL
#define __WALL 0x40000000