2 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
3 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 #include "xlat/pollflags.h"
35 print_pollfd(struct tcb *tcp, const struct pollfd *fds)
38 printfd(tcp, fds->fd);
41 printflags(pollflags, fds->events, "POLL???");
47 decode_poll_entering(struct tcb *tcp)
50 const unsigned int nfds = tcp->u_arg[1];
51 const unsigned long size = sizeof(fds) * nfds;
52 const unsigned long start = tcp->u_arg[0];
53 const unsigned long end = start + size;
54 const unsigned long max_printed =
55 abbrev(tcp) ? max_strlen : (unsigned int) -1;
57 if (!verbose(tcp) || !start || !nfds ||
58 size / sizeof(fds) != nfds || end < start) {
60 tprintf(", %u, ", nfds);
64 if (umove(tcp, start, &fds) < 0) {
66 tprintf(", %u, ", nfds);
72 unsigned long printed = 1;
73 unsigned long cur = start + sizeof(fds);
75 print_pollfd(tcp, &fds);
76 for (; cur < end; ++printed, cur += sizeof(fds)) {
78 if (printed >= max_printed) {
82 if (umove_or_printaddr(tcp, cur, &fds))
84 print_pollfd(tcp, &fds);
90 tprintf("], %u, ", nfds);
96 decode_poll_exiting(struct tcb *tcp, const long pts)
99 const unsigned int nfds = tcp->u_arg[1];
100 const unsigned long size = sizeof(fds) * nfds;
101 const unsigned long start = tcp->u_arg[0];
102 const unsigned long end = start + size;
103 const unsigned long max_printed =
104 abbrev(tcp) ? max_strlen : (unsigned int) -1;
105 unsigned long printed, cur;
107 static char outstr[1024];
109 #define end_outstr (outstr + sizeof(outstr))
113 if (tcp->u_rval == 0) {
114 tcp->auxstr = "Timeout";
118 if (!verbose(tcp) || !start || !nfds ||
119 size / sizeof(fds) != nfds || end < start)
124 for (printed = 0, cur = start; cur < end; cur += sizeof(fds)) {
125 if (umove(tcp, cur, &fds) < 0) {
126 if (outptr == outstr)
129 outptr = stpcpy(outptr, ", ");
130 outptr += sprintf(outptr, "%#lx", cur);
135 if (outptr == outstr)
138 outptr = stpcpy(outptr, ", ");
139 if (printed >= max_printed) {
140 outptr = stpcpy(outptr, "...");
144 static const char fmt[] = "{fd=%d, revents=";
145 char fdstr[sizeof(fmt) + sizeof(int) * 3];
146 sprintf(fdstr, fmt, fds.fd);
148 const char *flagstr = sprintflags("", pollflags, fds.revents);
150 if (outptr + strlen(fdstr) + strlen(flagstr) + 1 >=
151 end_outstr - (2 + 2 * sizeof(long) + sizeof(", ], ..."))) {
152 outptr = stpcpy(outptr, "...");
155 outptr = stpcpy(outptr, fdstr);
156 outptr = stpcpy(outptr, flagstr);
161 if (outptr != outstr)
166 const char *str = sprint_timespec(tcp, pts);
168 if (outptr + sizeof(", left ") + strlen(str) < end_outstr) {
169 outptr = stpcpy(outptr, outptr == outstr ? "left " : ", left ");
170 outptr = stpcpy(outptr, str);
172 outptr = stpcpy(outptr, ", ...");
176 if (outptr == outstr)
179 tcp->auxstr = outstr;
187 int rc = decode_poll_entering(tcp);
190 if (INFTIM == (int) tcp->u_arg[2])
194 tprintf("%d", (int) tcp->u_arg[2]);
198 return decode_poll_exiting(tcp, 0);
205 int rc = decode_poll_entering(tcp);
207 print_timespec(tcp, tcp->u_arg[2]);
209 /* NB: kernel requires arg[4] == NSIG / 8 */
210 print_sigset_addr_len(tcp, tcp->u_arg[3], tcp->u_arg[4]);
211 tprintf(", %lu", tcp->u_arg[4]);
215 return decode_poll_exiting(tcp, tcp->u_arg[2]);