* 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>
+ * Copyright (c) 1999-2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
return do_dup2(tcp, 2);
}
-#if defined(ALPHA)
-SYS_FUNC(getdtablesize)
-{
- return 0;
-}
-#endif
-
static int
-decode_select(struct tcb *tcp, long *args,
- void (*print_tv_ts) (struct tcb *, const long),
- const char * (*sprint_tv_ts) (struct tcb *, const long))
+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;
- long arg;
+ kernel_ulong_t addr;
- /* Kernel truncates arg[0] to int, we do the same. */
+ /* 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 (verbose(tcp) && fdsize > 0)
fds = malloc(fdsize);
for (i = 0; i < 3; i++) {
- arg = args[i+1];
+ addr = args[i+1];
tprints(", ");
if (!fds) {
- printaddr(arg);
+ printaddr(addr);
continue;
}
- if (umoven_or_printaddr(tcp, arg, fdsize, fds))
+ if (umoven_or_printaddr(tcp, addr, fdsize, fds))
continue;
tprints("[");
for (j = 0, sep = "";; j++) {
for (i = 0; i < 3 && ready_fds > 0; i++) {
int first = 1;
- arg = args[i+1];
- if (!arg || !fds || umoven(tcp, arg, fdsize, fds) < 0)
+ 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);
);
first = 0;
sep = ", ";
- }
- else {
+ } else {
outptr += sprintf(outptr, " %u", j);
}
}
SYS_FUNC(oldselect)
{
- long long_args[5];
-#undef oldselect_args
-#if SIZEOF_LONG == 4
-# define oldselect_args long_args
-#else
+ kernel_ulong_t select_args[5];
unsigned int oldselect_args[5];
- unsigned int i;
-#endif
- if (umove(tcp, tcp->u_arg[0], &oldselect_args) < 0) {
- printaddr(tcp->u_arg[0]);
- return 0;
- }
-#ifndef oldselect_args
- for (i = 0; i < 5; i++) {
- long_args[i] = oldselect_args[i];
+ 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];
+ }
}
-#endif
- return decode_select(tcp, long_args, print_timeval, sprint_timeval);
-#undef oldselect_args
+
+ return decode_select(tcp, select_args, print_timeval, sprint_timeval);
}
#ifdef ALPHA
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)) {
- unsigned long data[2];
+ kernel_ulong_t data[2];
tprints(", ");
- if (!umove_ulong_array_or_printaddr(tcp, tcp->u_arg[5], data,
- ARRAY_SIZE(data))) {
+ if (!umove_kulong_array_or_printaddr(tcp, tcp->u_arg[5],
+ data, ARRAY_SIZE(data))) {
tprints("{");
- /* NB: kernel requires data[1] == NSIG / 8 */
+ /* NB: kernel requires data[1] == NSIG_BYTES */
print_sigset_addr_len(tcp, data[0], data[1]);
- tprintf(", %lu}", data[1]);
+ tprintf(", %" PRI_klu "}", data[1]);
}
}
+
return rc;
}