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strace/desc.c
Dmitry V. Levin 0eeda2cdaa x32: fix build regressions introduced by commit v4.7-96-g8435d67 
* desc.c (printflock) [X32]: Add special handling required for
this architecture with sizeof(long) < sizeof(off_t).
* file.c [X32] (struct stat64): Add __attribute__((packed)).
[X32] (HAVE_STAT64): Define.
(printstat) [X32]: Redirect to printstat64.
(printstat64) [X32]: Use "struct stat" instead of "struct stat64".
[X32] (realprintstat64): Rename to printstat64_x32.
(sys_stat64, sys_fstat64) [X32]: Remove second definitions of these
functions.  Call printstat64_x32 instead of printstat64
* linux/x32/syscallent.h: Fix handlers for truncate and ftruncate.
2013-05-01 22:39:10 +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"
#include <fcntl.h>
#include <sys/file.h>
#ifdef HAVE_SYS_EPOLL_H
# include <sys/epoll.h>
#endif
#ifdef HAVE_LIBAIO_H
# include <libaio.h>
#endif
#ifdef HAVE_LINUX_PERF_EVENT_H
# include <linux/perf_event.h>
#endif
static const struct xlat fcntlcmds[] = {
{ F_DUPFD, "F_DUPFD" },
{ F_GETFD, "F_GETFD" },
{ F_SETFD, "F_SETFD" },
{ F_GETFL, "F_GETFL" },
{ F_SETFL, "F_SETFL" },
{ F_GETLK, "F_GETLK" },
{ F_SETLK, "F_SETLK" },
{ F_SETLKW, "F_SETLKW" },
{ F_GETOWN, "F_GETOWN" },
{ F_SETOWN, "F_SETOWN" },
#ifdef F_RSETLK
{ F_RSETLK, "F_RSETLK" },
#endif
#ifdef F_RSETLKW
{ F_RSETLKW, "F_RSETLKW" },
#endif
#ifdef F_RGETLK
{ F_RGETLK, "F_RGETLK" },
#endif
#ifdef F_CNVT
{ F_CNVT, "F_CNVT" },
#endif
#ifdef F_SETSIG
{ F_SETSIG, "F_SETSIG" },
#endif
#ifdef F_GETSIG
{ F_GETSIG, "F_GETSIG" },
#endif
#ifdef F_CHKFL
{ F_CHKFL, "F_CHKFL" },
#endif
#ifdef F_DUP2FD
{ F_DUP2FD, "F_DUP2FD" },
#endif
#ifdef F_ALLOCSP
{ F_ALLOCSP, "F_ALLOCSP" },
#endif
#ifdef F_ISSTREAM
{ F_ISSTREAM, "F_ISSTREAM" },
#endif
#ifdef F_PRIV
{ F_PRIV, "F_PRIV" },
#endif
#ifdef F_NPRIV
{ F_NPRIV, "F_NPRIV" },
#endif
#ifdef F_QUOTACL
{ F_QUOTACL, "F_QUOTACL" },
#endif
#ifdef F_BLOCKS
{ F_BLOCKS, "F_BLOCKS" },
#endif
#ifdef F_BLKSIZE
{ F_BLKSIZE, "F_BLKSIZE" },
#endif
#ifdef F_GETOWN
{ F_GETOWN, "F_GETOWN" },
#endif
#ifdef F_SETOWN
{ F_SETOWN, "F_SETOWN" },
#endif
#ifdef F_REVOKE
{ F_REVOKE, "F_REVOKE" },
#endif
#ifdef F_SETLK
{ F_SETLK, "F_SETLK" },
#endif
#ifdef F_SETLKW
{ F_SETLKW, "F_SETLKW" },
#endif
#ifdef F_FREESP
{ F_FREESP, "F_FREESP" },
#endif
#ifdef F_GETLK
{ F_GETLK, "F_GETLK" },
#endif
#ifdef F_SETLK64
{ F_SETLK64, "F_SETLK64" },
#endif
#ifdef F_SETLKW64
{ F_SETLKW64, "F_SETLKW64" },
#endif
#ifdef F_FREESP64
{ F_FREESP64, "F_FREESP64" },
#endif
#ifdef F_GETLK64
{ F_GETLK64, "F_GETLK64" },
#endif
#ifdef F_SHARE
{ F_SHARE, "F_SHARE" },
#endif
#ifdef F_UNSHARE
{ F_UNSHARE, "F_UNSHARE" },
#endif
#ifdef F_SETLEASE
{ F_SETLEASE, "F_SETLEASE" },
#endif
#ifdef F_GETLEASE
{ F_GETLEASE, "F_GETLEASE" },
#endif
#ifdef F_NOTIFY
{ F_NOTIFY, "F_NOTIFY" },
#endif
#ifdef F_DUPFD_CLOEXEC
{ F_DUPFD_CLOEXEC,"F_DUPFD_CLOEXEC"},
#endif
{ 0, NULL },
};
static const struct xlat fdflags[] = {
#ifdef FD_CLOEXEC
{ FD_CLOEXEC, "FD_CLOEXEC" },
#endif
{ 0, NULL },
};
#ifdef LOCK_SH
static const struct xlat flockcmds[] = {
{ LOCK_SH, "LOCK_SH" },
{ LOCK_EX, "LOCK_EX" },
{ LOCK_NB, "LOCK_NB" },
{ LOCK_UN, "LOCK_UN" },
{ 0, NULL },
};
#endif /* LOCK_SH */
static const struct xlat lockfcmds[] = {
{ F_RDLCK, "F_RDLCK" },
{ F_WRLCK, "F_WRLCK" },
{ F_UNLCK, "F_UNLCK" },
#ifdef F_EXLCK
{ F_EXLCK, "F_EXLCK" },
#endif
#ifdef F_SHLCK
{ F_SHLCK, "F_SHLCK" },
#endif
{ 0, NULL },
};
#ifdef F_NOTIFY
static const struct xlat notifyflags[] = {
#ifdef DN_ACCESS
{ DN_ACCESS, "DN_ACCESS" },
#endif
#ifdef DN_MODIFY
{ DN_MODIFY, "DN_MODIFY" },
#endif
#ifdef DN_CREATE
{ DN_CREATE, "DN_CREATE" },
#endif
#ifdef DN_DELETE
{ DN_DELETE, "DN_DELETE" },
#endif
#ifdef DN_RENAME
{ DN_RENAME, "DN_RENAME" },
#endif
#ifdef DN_ATTRIB
{ DN_ATTRIB, "DN_ATTRIB" },
#endif
#ifdef DN_MULTISHOT
{ DN_MULTISHOT, "DN_MULTISHOT" },
#endif
{ 0, NULL },
};
#endif
static const struct xlat perf_event_open_flags[] = {
#ifdef PERF_FLAG_FD_NO_GROUP
{ PERF_FLAG_FD_NO_GROUP, "PERF_FLAG_FD_NO_GROUP" },
#endif
#ifdef PERF_FLAG_FD_OUTPUT
{ PERF_FLAG_FD_OUTPUT, "PERF_FLAG_FD_OUTPUT" },
#endif
#ifdef PERF_FLAG_PID_CGROUP
{ PERF_FLAG_PID_CGROUP, "PERF_FLAG_PID_CGROUP" },
#endif
{ 0, NULL },
};
#if _LFS64_LARGEFILE
/* fcntl/lockf */
static void
printflock64(struct tcb *tcp, long addr, int getlk)
{
struct flock64 fl;
if (umove(tcp, addr, &fl) < 0) {
tprints("{...}");
return;
}
tprints("{type=");
printxval(lockfcmds, fl.l_type, "F_???");
tprints(", whence=");
printxval(whence_codes, fl.l_whence, "SEEK_???");
tprintf(", start=%lld, len=%lld", (long long) fl.l_start, (long long) fl.l_len);
if (getlk)
tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
else
tprints("}");
}
#endif
/* fcntl/lockf */
static void
printflock(struct tcb *tcp, long addr, int getlk)
{
struct flock fl;
#if SUPPORTED_PERSONALITIES > 1
# ifdef X32
if (current_personality == 0) {
printflock64(tcp, addr, getlk);
return;
}
# endif
if (current_wordsize != sizeof(fl.l_start)) {
if (current_wordsize == 4) {
/* 32-bit x86 app on x86_64 and similar cases */
struct {
short int l_type;
short int l_whence;
int32_t l_start; /* off_t */
int32_t l_len; /* off_t */
int32_t l_pid; /* pid_t */
} fl32;
if (umove(tcp, addr, &fl32) < 0) {
tprints("{...}");
return;
}
fl.l_type = fl32.l_type;
fl.l_whence = fl32.l_whence;
fl.l_start = fl32.l_start;
fl.l_len = fl32.l_len;
fl.l_pid = fl32.l_pid;
} else {
/* let people know we have a problem here */
tprintf("<decode error: unsupported wordsize %d>",
current_wordsize);
return;
}
} else
#endif
{
if (umove(tcp, addr, &fl) < 0) {
tprints("{...}");
return;
}
}
tprints("{type=");
printxval(lockfcmds, fl.l_type, "F_???");
tprints(", whence=");
printxval(whence_codes, fl.l_whence, "SEEK_???");
#ifdef X32
tprintf(", start=%lld, len=%lld", fl.l_start, fl.l_len);
#else
tprintf(", start=%ld, len=%ld", fl.l_start, fl.l_len);
#endif
if (getlk)
tprintf(", pid=%lu}", (unsigned long) fl.l_pid);
else
tprints("}");
}
int
sys_fcntl(struct tcb *tcp)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printxval(fcntlcmds, tcp->u_arg[1], "F_???");
switch (tcp->u_arg[1]) {
case F_SETFD:
tprints(", ");
printflags(fdflags, tcp->u_arg[2], "FD_???");
break;
case F_SETOWN: case F_DUPFD:
#ifdef F_DUPFD_CLOEXEC
case F_DUPFD_CLOEXEC:
#endif
tprintf(", %ld", tcp->u_arg[2]);
break;
case F_SETFL:
tprints(", ");
tprint_open_modes(tcp->u_arg[2]);
break;
case F_SETLK: case F_SETLKW:
#ifdef F_FREESP
case F_FREESP:
#endif
tprints(", ");
printflock(tcp, tcp->u_arg[2], 0);
break;
#if _LFS64_LARGEFILE
#ifdef F_FREESP64
case F_FREESP64:
#endif
/* Linux glibc defines SETLK64 as SETLK,
even though the kernel has different values - as does Solaris. */
#if defined(F_SETLK64) && F_SETLK64 + 0 != F_SETLK
case F_SETLK64:
#endif
#if defined(F_SETLKW64) && F_SETLKW64 + 0 != F_SETLKW
case F_SETLKW64:
#endif
tprints(", ");
printflock64(tcp, tcp->u_arg[2], 0);
break;
#endif
#ifdef F_NOTIFY
case F_NOTIFY:
tprints(", ");
printflags(notifyflags, tcp->u_arg[2], "DN_???");
break;
#endif
#ifdef F_SETLEASE
case F_SETLEASE:
tprints(", ");
printxval(lockfcmds, tcp->u_arg[2], "F_???");
break;
#endif
}
}
else {
switch (tcp->u_arg[1]) {
case F_DUPFD:
#ifdef F_DUPFD_CLOEXEC
case F_DUPFD_CLOEXEC:
#endif
case F_SETFD: case F_SETFL:
case F_SETLK: case F_SETLKW:
case F_SETOWN: case F_GETOWN:
#ifdef F_NOTIFY
case F_NOTIFY:
#endif
#ifdef F_SETLEASE
case F_SETLEASE:
#endif
break;
case F_GETFD:
if (syserror(tcp) || tcp->u_rval == 0)
return 0;
tcp->auxstr = sprintflags("flags ", fdflags, tcp->u_rval);
return RVAL_HEX|RVAL_STR;
case F_GETFL:
if (syserror(tcp))
return 0;
tcp->auxstr = sprint_open_modes(tcp->u_rval);
return RVAL_HEX|RVAL_STR;
case F_GETLK:
tprints(", ");
printflock(tcp, tcp->u_arg[2], 1);
break;
#if _LFS64_LARGEFILE
#if defined(F_GETLK64) && F_GETLK64+0 != F_GETLK
case F_GETLK64:
#endif
tprints(", ");
printflock64(tcp, tcp->u_arg[2], 1);
break;
#endif
#ifdef F_GETLEASE
case F_GETLEASE:
if (syserror(tcp))
return 0;
tcp->auxstr = xlookup(lockfcmds, tcp->u_rval);
return RVAL_HEX|RVAL_STR;
#endif
default:
tprintf(", %#lx", tcp->u_arg[2]);
break;
}
}
return 0;
}
#ifdef LOCK_SH
int
sys_flock(struct tcb *tcp)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printflags(flockcmds, tcp->u_arg[1], "LOCK_???");
}
return 0;
}
#endif /* LOCK_SH */
int
sys_close(struct tcb *tcp)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
}
return 0;
}
static int
do_dup2(struct tcb *tcp, int flags_arg)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printfd(tcp, tcp->u_arg[1]);
if (flags_arg >= 0) {
tprints(", ");
printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
}
}
return 0;
}
int
sys_dup2(struct tcb *tcp)
{
return do_dup2(tcp, -1);
}
int
sys_dup3(struct tcb *tcp)
{
return do_dup2(tcp, 2);
}
#if defined(ALPHA)
int
sys_getdtablesize(struct tcb *tcp)
{
return 0;
}
#endif
static int
decode_select(struct tcb *tcp, long *args, enum bitness_t bitness)
{
int i, j;
unsigned nfds, fdsize;
fd_set *fds;
const char *sep;
long arg;
fdsize = args[0];
/* Beware of select(2^31-1, NULL, NULL, NULL) and similar... */
if (args[0] > 1024*1024)
fdsize = 1024*1024;
if (args[0] < 0)
fdsize = 0;
fdsize = (((fdsize + 7) / 8) + sizeof(long)-1) & -sizeof(long);
if (entering(tcp)) {
fds = malloc(fdsize);
if (!fds)
die_out_of_memory();
nfds = args[0];
tprintf("%d", nfds);
for (i = 0; i < 3; i++) {
arg = args[i+1];
if (arg == 0) {
tprints(", NULL");
continue;
}
if (!verbose(tcp)) {
tprintf(", %#lx", arg);
continue;
}
if (umoven(tcp, arg, fdsize, (char *) fds) < 0) {
tprints(", [?]");
continue;
}
tprints(", [");
for (j = 0, sep = ""; j < nfds; j++) {
if (FD_ISSET(j, fds)) {
tprints(sep);
printfd(tcp, j);
sep = " ";
}
}
tprints("]");
}
free(fds);
tprints(", ");
printtv_bitness(tcp, args[4], bitness, 0);
}
else {
static char outstr[1024];
char *outptr;
#define end_outstr (outstr + sizeof(outstr))
const char *sep;
if (syserror(tcp))
return 0;
nfds = tcp->u_rval;
if (nfds == 0) {
tcp->auxstr = "Timeout";
return RVAL_STR;
}
fds = malloc(fdsize);
if (!fds)
die_out_of_memory();
outptr = outstr;
sep = "";
for (i = 0; i < 3; i++) {
int first = 1;
arg = args[i+1];
if (!arg || umoven(tcp, arg, fdsize, (char *) fds) < 0)
continue;
for (j = 0; j < args[0]; j++) {
if (FD_ISSET(j, fds)) {
/* +2 chars needed at the end: ']',NUL */
if (outptr < end_outstr - (sizeof(", except [") + sizeof(int)*3 + 2)) {
if (first) {
outptr += sprintf(outptr, "%s%s [%u",
sep,
i == 0 ? "in" : i == 1 ? "out" : "except",
j
);
first = 0;
sep = ", ";
}
else {
outptr += sprintf(outptr, " %u", j);
}
}
nfds--;
}
}
if (outptr != outstr)
*outptr++ = ']';
if (nfds == 0)
break;
}
free(fds);
/* This contains no useful information on SunOS. */
if (args[4]) {
if (outptr < end_outstr - (10 + TIMEVAL_TEXT_BUFSIZE)) {
outptr += sprintf(outptr, "%sleft ", sep);
outptr = sprinttv(outptr, tcp, args[4], bitness, /*special:*/ 0);
}
}
*outptr = '\0';
tcp->auxstr = outstr;
return RVAL_STR;
#undef end_outstr
}
return 0;
}
int
sys_oldselect(struct tcb *tcp)
{
long args[5];
if (umoven(tcp, tcp->u_arg[0], sizeof args, (char *) args) < 0) {
tprints("[...]");
return 0;
}
return decode_select(tcp, args, BITNESS_CURRENT);
}
#ifdef ALPHA
int
sys_osf_select(struct tcb *tcp)
{
long *args = tcp->u_arg;
return decode_select(tcp, args, BITNESS_32);
}
#endif
static const struct xlat epollctls[] = {
#ifdef EPOLL_CTL_ADD
{ EPOLL_CTL_ADD, "EPOLL_CTL_ADD" },
#endif
#ifdef EPOLL_CTL_MOD
{ EPOLL_CTL_MOD, "EPOLL_CTL_MOD" },
#endif
#ifdef EPOLL_CTL_DEL
{ EPOLL_CTL_DEL, "EPOLL_CTL_DEL" },
#endif
{ 0, NULL }
};
static const struct xlat epollevents[] = {
#ifdef EPOLLIN
{ EPOLLIN, "EPOLLIN" },
#endif
#ifdef EPOLLPRI
{ EPOLLPRI, "EPOLLPRI" },
#endif
#ifdef EPOLLOUT
{ EPOLLOUT, "EPOLLOUT" },
#endif
#ifdef EPOLLRDNORM
{ EPOLLRDNORM, "EPOLLRDNORM" },
#endif
#ifdef EPOLLRDBAND
{ EPOLLRDBAND, "EPOLLRDBAND" },
#endif
#ifdef EPOLLWRNORM
{ EPOLLWRNORM, "EPOLLWRNORM" },
#endif
#ifdef EPOLLWRBAND
{ EPOLLWRBAND, "EPOLLWRBAND" },
#endif
#ifdef EPOLLMSG
{ EPOLLMSG, "EPOLLMSG" },
#endif
#ifdef EPOLLERR
{ EPOLLERR, "EPOLLERR" },
#endif
#ifdef EPOLLHUP
{ EPOLLHUP, "EPOLLHUP" },
#endif
#ifdef EPOLLRDHUP
{ EPOLLRDHUP, "EPOLLRDHUP" },
#endif
#ifdef EPOLLONESHOT
{ EPOLLONESHOT, "EPOLLONESHOT" },
#endif
#ifdef EPOLLET
{ EPOLLET, "EPOLLET" },
#endif
{ 0, NULL }
};
/* Not aliased to printargs_ld: we want it to have a distinct address */
int
sys_epoll_create(struct tcb *tcp)
{
return printargs_ld(tcp);
}
static const struct xlat epollflags[] = {
#ifdef EPOLL_CLOEXEC
{ EPOLL_CLOEXEC, "EPOLL_CLOEXEC" },
#endif
#ifdef EPOLL_NONBLOCK
{ EPOLL_NONBLOCK, "EPOLL_NONBLOCK" },
#endif
{ 0, NULL }
};
int
sys_epoll_create1(struct tcb *tcp)
{
if (entering(tcp))
printflags(epollflags, tcp->u_arg[0], "EPOLL_???");
return 0;
}
#ifdef HAVE_SYS_EPOLL_H
static void
print_epoll_event(struct epoll_event *ev)
{
tprints("{");
printflags(epollevents, ev->events, "EPOLL???");
/* We cannot know what format the program uses, so print u32 and u64
which will cover every value. */
tprintf(", {u32=%" PRIu32 ", u64=%" PRIu64 "}}",
ev->data.u32, ev->data.u64);
}
#endif
int
sys_epoll_ctl(struct tcb *tcp)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
printxval(epollctls, tcp->u_arg[1], "EPOLL_CTL_???");
tprints(", ");
printfd(tcp, tcp->u_arg[2]);
tprints(", ");
if (tcp->u_arg[3] == 0)
tprints("NULL");
else {
#ifdef HAVE_SYS_EPOLL_H
struct epoll_event ev;
if (umove(tcp, tcp->u_arg[3], &ev) == 0)
print_epoll_event(&ev);
else
#endif
tprints("{...}");
}
}
return 0;
}
static void
epoll_wait_common(struct tcb *tcp)
{
if (entering(tcp)) {
printfd(tcp, tcp->u_arg[0]);
tprints(", ");
} else {
if (syserror(tcp))
tprintf("%lx", tcp->u_arg[1]);
else if (tcp->u_rval == 0)
tprints("{}");
else {
#ifdef HAVE_SYS_EPOLL_H
struct epoll_event ev, *start, *cur, *end;
int failed = 0;
tprints("{");
start = (struct epoll_event *) tcp->u_arg[1];
end = start + tcp->u_rval;
for (cur = start; cur < end; ++cur) {
if (cur > start)
tprints(", ");
if (umove(tcp, (long) cur, &ev) == 0)
print_epoll_event(&ev);
else {
tprints("?");
failed = 1;
break;
}
}
tprints("}");
if (failed)
tprintf(" %#lx", (long) start);
#else
tprints("{...}");
#endif
}
tprintf(", %d, %d", (int) tcp->u_arg[2], (int) tcp->u_arg[3]);
}
}
int
sys_epoll_wait(struct tcb *tcp)
{
epoll_wait_common(tcp);
return 0;
}
int
sys_epoll_pwait(struct tcb *tcp)
{
epoll_wait_common(tcp);
if (exiting(tcp)) {
tprints(", ");
print_sigset(tcp, tcp->u_arg[4], 0);
}
return 0;
}
int
sys_io_setup(struct tcb *tcp)
{
if (entering(tcp))
tprintf("%ld, ", tcp->u_arg[0]);
else {
if (syserror(tcp))
tprintf("0x%0lx", tcp->u_arg[1]);
else {
unsigned long user_id;
if (umove(tcp, tcp->u_arg[1], &user_id) == 0)
tprintf("{%lu}", user_id);
else
tprints("{...}");
}
}
return 0;
}
int
sys_io_destroy(struct tcb *tcp)
{
if (entering(tcp))
tprintf("%lu", tcp->u_arg[0]);
return 0;
}
#ifdef HAVE_LIBAIO_H
enum iocb_sub {
SUB_NONE, SUB_COMMON, SUB_POLL, SUB_VECTOR
};
static const char *
iocb_cmd_lookup(unsigned cmd, enum iocb_sub *sub)
{
static char buf[sizeof("%u /* SUB_??? */") + sizeof(int)*3];
static const struct {
const char *name;
enum iocb_sub sub;
} cmds[] = {
{ "pread", SUB_COMMON },
{ "pwrite", SUB_COMMON },
{ "fsync", SUB_NONE },
{ "fdsync", SUB_NONE },
{ "op4", SUB_NONE },
{ "poll", SUB_POLL },
{ "noop", SUB_NONE },
{ "preadv", SUB_VECTOR },
{ "pwritev", SUB_VECTOR },
};
if (cmd < ARRAY_SIZE(cmds)) {
*sub = cmds[cmd].sub;
return cmds[cmd].name;
}
*sub = SUB_NONE;
sprintf(buf, "%u /* SUB_??? */", cmd);
return buf;
}
/* Not defined in libaio.h */
#ifndef IOCB_RESFD
# define IOCB_RESFD (1 << 0)
#endif
static void
print_common_flags(struct iocb *iocb)
{
#if HAVE_STRUCT_IOCB_U_C_FLAGS
if (iocb->u.c.flags & IOCB_RESFD)
tprintf(", resfd=%d", iocb->u.c.resfd);
if (iocb->u.c.flags & ~IOCB_RESFD)
tprintf(", flags=%x", iocb->u.c.flags);
#else
# warning "libaio.h is too old => limited io_submit decoding"
#endif
}
#endif /* HAVE_LIBAIO_H */
int
sys_io_submit(struct tcb *tcp)
{
long nr;
if (entering(tcp)) {
tprintf("%lu, %ld, ", tcp->u_arg[0], tcp->u_arg[1]);
nr = tcp->u_arg[1];
/* and if nr is negative? */
if (nr == 0)
tprints("{}");
else {
#ifdef HAVE_LIBAIO_H
long i;
struct iocb *iocbp, **iocbs = (void *)tcp->u_arg[2];
for (i = 0; i < nr; i++, iocbs++) {
enum iocb_sub sub;
struct iocb iocb;
if (i == 0)
tprints("{");
else
tprints(", ");
if (umove(tcp, (unsigned long)iocbs, &iocbp) ||
umove(tcp, (unsigned long)iocbp, &iocb)) {
tprints("{...}");
continue;
}
tprints("{");
if (iocb.data)
tprintf("data:%p, ", iocb.data);
if (iocb.key)
tprintf("key:%u, ", iocb.key);
tprintf("%s, ", iocb_cmd_lookup(iocb.aio_lio_opcode, &sub));
if (iocb.aio_reqprio)
tprintf("reqprio:%d, ", iocb.aio_reqprio);
tprintf("filedes:%d", iocb.aio_fildes);
switch (sub) {
case SUB_COMMON:
#if HAVE_DECL_IO_CMD_PWRITE
if (iocb.aio_lio_opcode == IO_CMD_PWRITE) {
tprints(", str:");
printstr(tcp, (unsigned long)iocb.u.c.buf,
iocb.u.c.nbytes);
} else
#endif
tprintf(", buf:%p", iocb.u.c.buf);
tprintf(", nbytes:%lu, offset:%lld",
iocb.u.c.nbytes,
iocb.u.c.offset);
print_common_flags(&iocb);
break;
case SUB_VECTOR:
tprintf(", %lld", iocb.u.v.offset);
print_common_flags(&iocb);
tprints(", ");
tprint_iov(tcp, iocb.u.v.nr,
(unsigned long)iocb.u.v.vec,
#if HAVE_DECL_IO_CMD_PWRITEV
iocb.aio_lio_opcode == IO_CMD_PWRITEV
#else
0
#endif
);
break;
case SUB_POLL:
tprintf(", %x", iocb.u.poll.events);
break;
case SUB_NONE:
break;
}
tprints("}");
}
if (i)
tprints("}");
#else
#warning "libaio.h is not available => no io_submit decoding"
tprintf("%#lx", tcp->u_arg[2]);
#endif
}
}
return 0;
}
int
sys_io_cancel(struct tcb *tcp)
{
if (entering(tcp)) {
#ifdef HAVE_LIBAIO_H
struct iocb iocb;
#endif
tprintf("%lu, ", tcp->u_arg[0]);
#ifdef HAVE_LIBAIO_H
if (umove(tcp, tcp->u_arg[1], &iocb) == 0) {
tprintf("{%p, %u, %u, %u, %d}, ",
iocb.data, iocb.key,
(unsigned)iocb.aio_lio_opcode,
(unsigned)iocb.aio_reqprio, iocb.aio_fildes);
} else
#endif
tprints("{...}, ");
} else {
if (tcp->u_rval < 0)
tprints("{...}");
else {
#ifdef HAVE_LIBAIO_H
struct io_event event;
if (umove(tcp, tcp->u_arg[2], &event) == 0)
tprintf("{%p, %p, %ld, %ld}",
event.data, event.obj,
event.res, event.res2);
else
#endif
tprints("{...}");
}
}
return 0;
}
int
sys_io_getevents(struct tcb *tcp)
{
if (entering(tcp)) {
tprintf("%ld, %ld, %ld, ", tcp->u_arg[0], tcp->u_arg[1],
tcp->u_arg[2]);
} else {
if (tcp->u_rval == 0) {
tprints("{}");
} else {
#ifdef HAVE_LIBAIO_H
struct io_event *events = (void *)tcp->u_arg[3];
long i, nr = tcp->u_rval;
for (i = 0; i < nr; i++, events++) {
struct io_event event;
if (i == 0)
tprints("{");
else
tprints(", ");
if (umove(tcp, (unsigned long)events, &event) != 0) {
tprints("{...}");
continue;
}
tprintf("{%p, %p, %ld, %ld}", event.data,
event.obj, event.res, event.res2);
}
tprints("}, ");
#else
tprints("{...}");
#endif
}
print_timespec(tcp, tcp->u_arg[4]);
}
return 0;
}
int
sys_select(struct tcb *tcp)
{
return decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
}
int
sys_pselect6(struct tcb *tcp)
{
int rc = decode_select(tcp, tcp->u_arg, BITNESS_CURRENT);
if (entering(tcp)) {
struct {
void *ss;
unsigned long len;
} data;
if (umove(tcp, tcp->u_arg[5], &data) < 0)
tprintf(", %#lx", tcp->u_arg[5]);
else {
tprints(", {");
if (data.len < sizeof(long))
tprintf("%#lx", (long)data.ss);
else
print_sigset(tcp, (long)data.ss, 0);
tprintf(", %lu}", data.len);
}
}
return rc;
}
static int
do_eventfd(struct tcb *tcp, int flags_arg)
{
if (entering(tcp)) {
tprintf("%lu", tcp->u_arg[0]);
if (flags_arg >= 0) {
tprints(", ");
printflags(open_mode_flags, tcp->u_arg[flags_arg], "O_???");
}
}
return 0;
}
int
sys_eventfd(struct tcb *tcp)
{
return do_eventfd(tcp, -1);
}
int
sys_eventfd2(struct tcb *tcp)
{
return do_eventfd(tcp, 1);
}
int
sys_perf_event_open(struct tcb *tcp)
{
if (entering(tcp)) {
tprintf("%#lx, %d, %d, %d, ",
tcp->u_arg[0],
(int) tcp->u_arg[1],
(int) tcp->u_arg[2],
(int) tcp->u_arg[3]);
printflags(perf_event_open_flags, tcp->u_arg[4],
"PERF_FLAG_???");
}
return 0;
}
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