Dmitry V. Levin
c2982b5b72
glibc in _FORTIFY_SOURCE mode raises SIGABRT when descriptor greater or equal to FD_SETSIZE is passed to FD_ISSET. Select family syscalls, however, can legitimately accept such descriptors. To overcome this limitation, we have to replace FD_ISSET with an equivalent that imposes no such restrictions. * desc.c (fd_isset): New function. (decode_select): Use it instead of FD_ISSET.
1138 lines
23 KiB
C
1138 lines
23 KiB
C
/*
|
|
* 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
|
|
fd_isset(int d, fd_set *fds)
|
|
{
|
|
const int bpl = 8 * sizeof(long);
|
|
long *s = (long *) fds;
|
|
return !!(s[d / bpl] & (1L << (d % bpl)));
|
|
}
|
|
|
|
static int
|
|
decode_select(struct tcb *tcp, long *args, enum bitness_t bitness)
|
|
{
|
|
int i, j;
|
|
int nfds, fdsize;
|
|
fd_set *fds;
|
|
const char *sep;
|
|
long arg;
|
|
|
|
/* Kernel truncates arg[0] to int, we do the same. */
|
|
nfds = (int) args[0];
|
|
|
|
/* Kernel rejects negative nfds, so we don't parse it either. */
|
|
if (nfds < 0) {
|
|
nfds = 0;
|
|
fds = NULL;
|
|
}
|
|
/* Beware of select(2^31-1, NULL, NULL, NULL) and similar... */
|
|
if (nfds > 1024*1024)
|
|
nfds = 1024*1024;
|
|
|
|
/*
|
|
* We had bugs a-la "while (j < args[0])" and "umoven(args[0])" below.
|
|
* Instead of args[0], use nfds for fd count, fdsize for array lengths.
|
|
*/
|
|
fdsize = (((nfds + 7) / 8) + sizeof(long)-1) & -sizeof(long);
|
|
|
|
if (entering(tcp)) {
|
|
tprintf("%d", (int) args[0]);
|
|
|
|
if (fdsize > 0) {
|
|
fds = malloc(fdsize);
|
|
if (!fds)
|
|
die_out_of_memory();
|
|
}
|
|
for (i = 0; i < 3; i++) {
|
|
arg = args[i+1];
|
|
if (arg == 0) {
|
|
tprints(", NULL");
|
|
continue;
|
|
}
|
|
if (!verbose(tcp) || !fds) {
|
|
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))
|
|
int ready_fds;
|
|
|
|
if (syserror(tcp))
|
|
return 0;
|
|
|
|
ready_fds = tcp->u_rval;
|
|
if (ready_fds == 0) {
|
|
tcp->auxstr = "Timeout";
|
|
return RVAL_STR;
|
|
}
|
|
|
|
fds = malloc(fdsize);
|
|
if (!fds)
|
|
die_out_of_memory();
|
|
|
|
outptr = outstr;
|
|
sep = "";
|
|
for (i = 0; i < 3 && ready_fds > 0; i++) {
|
|
int first = 1;
|
|
|
|
arg = args[i+1];
|
|
if (!arg || umoven(tcp, arg, fdsize, (char *) fds) < 0)
|
|
continue;
|
|
for (j = 0; j < nfds; 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);
|
|
}
|
|
}
|
|
if (--ready_fds == 0)
|
|
break;
|
|
}
|
|
}
|
|
if (outptr != outstr)
|
|
*outptr++ = ']';
|
|
}
|
|
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(", ");
|
|
/* NB: kernel requires arg[5] == NSIG / 8 */
|
|
print_sigset_addr_len(tcp, tcp->u_arg[4], tcp->u_arg[5]);
|
|
tprintf(", %lu", tcp->u_arg[5]);
|
|
}
|
|
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)) {
|
|
long r;
|
|
struct {
|
|
unsigned long ptr;
|
|
unsigned long len;
|
|
} data;
|
|
#if SUPPORTED_PERSONALITIES > 1 && SIZEOF_LONG > 4
|
|
if (current_wordsize == 4) {
|
|
struct {
|
|
uint32_t ptr;
|
|
uint32_t len;
|
|
} data32;
|
|
r = umove(tcp, tcp->u_arg[5], &data32);
|
|
data.ptr = data32.ptr;
|
|
data.len = data32.len;
|
|
} else
|
|
#endif
|
|
r = umove(tcp, tcp->u_arg[5], &data);
|
|
if (r < 0)
|
|
tprintf(", %#lx", tcp->u_arg[5]);
|
|
else {
|
|
tprints(", {");
|
|
/* NB: kernel requires data.len == NSIG / 8 */
|
|
print_sigset_addr_len(tcp, data.ptr, data.len);
|
|
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;
|
|
}
|