print_timespec.c revision 39bac055674d23770b9a724221b728e443196ea7 
1/*
2 * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2016-2017 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
16 *
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.
27 */
28
29#include "defs.h"
30
31#include DEF_MPERS_TYPE(timespec_t)
32
33typedef struct timespec timespec_t;
34
35#include MPERS_DEFS
36
37#ifndef UTIME_NOW
38# define UTIME_NOW ((1l << 30) - 1l)
39#endif
40#ifndef UTIME_OMIT
41# define UTIME_OMIT ((1l << 30) - 2l)
42#endif
43
44static const char timespec_fmt[] = "{tv_sec=%lld, tv_nsec=%llu}";
45
46static void
47print_timespec_t(const timespec_t *t)
48{
49	tprintf(timespec_fmt, (long long) t->tv_sec,
50		zero_extend_signed_to_ull(t->tv_nsec));
51}
52
53static void
54print_timespec_t_utime(const timespec_t *t)
55{
56	switch (t->tv_nsec) {
57	case UTIME_NOW:
58		tprints("UTIME_NOW");
59		break;
60	case UTIME_OMIT:
61		tprints("UTIME_OMIT");
62		break;
63	default:
64		print_timespec_t(t);
65		tprints_comment(sprinttime_nsec(t->tv_sec,
66			zero_extend_signed_to_ull(t->tv_nsec)));
67		break;
68	}
69}
70
71MPERS_PRINTER_DECL(void, print_timespec,
72		   struct tcb *const tcp, const kernel_ulong_t addr)
73{
74	timespec_t t;
75
76	if (umove_or_printaddr(tcp, addr, &t))
77		return;
78
79	print_timespec_t(&t);
80}
81
82MPERS_PRINTER_DECL(const char *, sprint_timespec,
83		   struct tcb *const tcp, const kernel_ulong_t addr)
84{
85	timespec_t t;
86	static char buf[sizeof(timespec_fmt) + 3 * sizeof(t)];
87
88	if (!addr) {
89		strcpy(buf, "NULL");
90	} else if (!verbose(tcp) || (exiting(tcp) && syserror(tcp)) ||
91		   umove(tcp, addr, &t)) {
92		snprintf(buf, sizeof(buf), "%#" PRI_klx, addr);
93	} else {
94		snprintf(buf, sizeof(buf), timespec_fmt,
95			 (long long) t.tv_sec,
96			 zero_extend_signed_to_ull(t.tv_nsec));
97	}
98
99	return buf;
100}
101
102MPERS_PRINTER_DECL(void, print_timespec_utime_pair,
103		   struct tcb *const tcp, const kernel_ulong_t addr)
104{
105	timespec_t t[2];
106
107	if (umove_or_printaddr(tcp, addr, &t))
108		return;
109
110	tprints("[");
111	print_timespec_t_utime(&t[0]);
112	tprints(", ");
113	print_timespec_t_utime(&t[1]);
114	tprints("]");
115}
116
117MPERS_PRINTER_DECL(void, print_itimerspec,
118		   struct tcb *const tcp, const kernel_ulong_t addr)
119{
120	timespec_t t[2];
121
122	if (umove_or_printaddr(tcp, addr, &t))
123		return;
124
125	tprints("{it_interval=");
126	print_timespec_t(&t[0]);
127	tprints(", it_value=");
128	print_timespec_t(&t[1]);
129	tprints("}");
130}
131