Dmitry V. Levin
e9c702f9ad
* nsig.h (NSIG_BYTES): New macro. * desc.c: Use it in comments instead of NSIG. * epoll.c: Likewise. * poll.c: Likewise. * signalfd.c: Likewise. * signal.c: Likewise. (sprintsigmask_n, print_sigset_addr_len_limit): Use it instead of NSIG. * linux/alpha/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/arm/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/crisv10/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/ia64/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/m68k/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/microblaze/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/mips/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/powerpc/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/s390/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/sparc/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/tile/arch_sigreturn.c (arch_sigreturn): Likewise. * linux/x86_64/arch_sigreturn.c (arch_sigreturn): Likewise. * tests/pselect6.c (main): Likewise.
267 lines
6.5 KiB
C
267 lines
6.5 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"
|
|
|
|
SYS_FUNC(close)
|
|
{
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
|
|
return RVAL_DECODED;
|
|
}
|
|
|
|
SYS_FUNC(dup)
|
|
{
|
|
printfd(tcp, tcp->u_arg[0]);
|
|
|
|
return RVAL_DECODED | RVAL_FD;
|
|
}
|
|
|
|
static int
|
|
do_dup2(struct tcb *tcp, int flags_arg)
|
|
{
|
|
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 RVAL_DECODED | RVAL_FD;
|
|
}
|
|
|
|
SYS_FUNC(dup2)
|
|
{
|
|
return do_dup2(tcp, -1);
|
|
}
|
|
|
|
SYS_FUNC(dup3)
|
|
{
|
|
return do_dup2(tcp, 2);
|
|
}
|
|
|
|
static int
|
|
decode_select(struct tcb *const tcp, const kernel_ulong_t *const args,
|
|
void (*const print_tv_ts) (struct tcb *, kernel_ulong_t),
|
|
const char * (*const sprint_tv_ts) (struct tcb *, kernel_ulong_t))
|
|
{
|
|
int i, j;
|
|
int nfds, fdsize;
|
|
fd_set *fds = NULL;
|
|
const char *sep;
|
|
kernel_ulong_t addr;
|
|
|
|
/* Kernel truncates args[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;
|
|
|
|
/* 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) + current_wordsize-1) & -current_wordsize;
|
|
|
|
if (entering(tcp)) {
|
|
tprintf("%d", (int) args[0]);
|
|
|
|
if (verbose(tcp) && fdsize > 0)
|
|
fds = malloc(fdsize);
|
|
for (i = 0; i < 3; i++) {
|
|
addr = args[i+1];
|
|
tprints(", ");
|
|
if (!fds) {
|
|
printaddr(addr);
|
|
continue;
|
|
}
|
|
if (umoven_or_printaddr(tcp, addr, fdsize, fds))
|
|
continue;
|
|
tprints("[");
|
|
for (j = 0, sep = "";; j++) {
|
|
j = next_set_bit(fds, j, nfds);
|
|
if (j < 0)
|
|
break;
|
|
tprints(sep);
|
|
printfd(tcp, j);
|
|
sep = " ";
|
|
}
|
|
tprints("]");
|
|
}
|
|
free(fds);
|
|
tprints(", ");
|
|
print_tv_ts(tcp, args[4]);
|
|
} 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);
|
|
|
|
outptr = outstr;
|
|
sep = "";
|
|
for (i = 0; i < 3 && ready_fds > 0; i++) {
|
|
int first = 1;
|
|
|
|
addr = args[i+1];
|
|
if (!addr || !fds || umoven(tcp, addr, fdsize, fds) < 0)
|
|
continue;
|
|
for (j = 0;; j++) {
|
|
j = next_set_bit(fds, j, nfds);
|
|
if (j < 0)
|
|
break;
|
|
/* +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]) {
|
|
const char *str = sprint_tv_ts(tcp, args[4]);
|
|
if (outptr + sizeof("left ") + strlen(sep) + strlen(str) < end_outstr) {
|
|
outptr += sprintf(outptr, "%sleft %s", sep, str);
|
|
}
|
|
}
|
|
*outptr = '\0';
|
|
tcp->auxstr = outstr;
|
|
return RVAL_STR;
|
|
#undef end_outstr
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
SYS_FUNC(oldselect)
|
|
{
|
|
kernel_ulong_t select_args[5];
|
|
unsigned int oldselect_args[5];
|
|
|
|
if (sizeof(*select_args) == sizeof(*oldselect_args)) {
|
|
if (umove_or_printaddr(tcp, tcp->u_arg[0], &select_args)) {
|
|
return 0;
|
|
}
|
|
} else {
|
|
unsigned int i;
|
|
|
|
if (umove_or_printaddr(tcp, tcp->u_arg[0], &oldselect_args)) {
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < 5; ++i) {
|
|
select_args[i] = oldselect_args[i];
|
|
}
|
|
}
|
|
|
|
return decode_select(tcp, select_args, print_timeval, sprint_timeval);
|
|
}
|
|
|
|
#ifdef ALPHA
|
|
SYS_FUNC(osf_select)
|
|
{
|
|
return decode_select(tcp, tcp->u_arg, print_timeval32, sprint_timeval32);
|
|
}
|
|
#endif
|
|
|
|
SYS_FUNC(select)
|
|
{
|
|
return decode_select(tcp, tcp->u_arg, print_timeval, sprint_timeval);
|
|
}
|
|
|
|
static int
|
|
umove_kulong_array_or_printaddr(struct tcb *const tcp, const kernel_ulong_t addr,
|
|
kernel_ulong_t *const ptr, const size_t n)
|
|
{
|
|
#ifndef current_klongsize
|
|
if (current_klongsize < sizeof(*ptr)) {
|
|
uint32_t ptr32[n];
|
|
int r = umove_or_printaddr(tcp, addr, &ptr32);
|
|
if (!r) {
|
|
size_t i;
|
|
|
|
for (i = 0; i < n; ++i)
|
|
ptr[i] = ptr32[i];
|
|
}
|
|
return r;
|
|
}
|
|
#endif /* !current_klongsize */
|
|
return umoven_or_printaddr(tcp, addr, n * sizeof(*ptr), ptr);
|
|
}
|
|
|
|
SYS_FUNC(pselect6)
|
|
{
|
|
int rc = decode_select(tcp, tcp->u_arg, print_timespec, sprint_timespec);
|
|
if (entering(tcp)) {
|
|
kernel_ulong_t data[2];
|
|
|
|
tprints(", ");
|
|
if (!umove_kulong_array_or_printaddr(tcp, tcp->u_arg[5],
|
|
data, ARRAY_SIZE(data))) {
|
|
tprints("{");
|
|
/* NB: kernel requires data[1] == NSIG_BYTES */
|
|
print_sigset_addr_len(tcp, data[0], data[1]);
|
|
tprintf(", %" PRI_klu "}", data[1]);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|