1 /*
2 * Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
3 * Copyright (c) 2004-2016 Dmitry V. Levin <ldv@altlinux.org>
4 * Copyright (c) 2015-2018 The strace developers.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "defs.h"
31
32 #include DEF_MPERS_TYPE(struct_rtc_pll_info)
33
34 #include <linux/ioctl.h>
35 #include <linux/rtc.h>
36
37 typedef struct rtc_pll_info struct_rtc_pll_info;
38
39 #include MPERS_DEFS
40
41 static void
print_rtc_time(struct tcb * tcp,const struct rtc_time * rt)42 print_rtc_time(struct tcb *tcp, const struct rtc_time *rt)
43 {
44 tprintf("{tm_sec=%d, tm_min=%d, tm_hour=%d, "
45 "tm_mday=%d, tm_mon=%d, tm_year=%d, ",
46 rt->tm_sec, rt->tm_min, rt->tm_hour,
47 rt->tm_mday, rt->tm_mon, rt->tm_year);
48 if (!abbrev(tcp))
49 tprintf("tm_wday=%d, tm_yday=%d, tm_isdst=%d}",
50 rt->tm_wday, rt->tm_yday, rt->tm_isdst);
51 else
52 tprints("...}");
53 }
54
55 static void
decode_rtc_time(struct tcb * const tcp,const kernel_ulong_t addr)56 decode_rtc_time(struct tcb *const tcp, const kernel_ulong_t addr)
57 {
58 struct rtc_time rt;
59
60 if (!umove_or_printaddr(tcp, addr, &rt))
61 print_rtc_time(tcp, &rt);
62 }
63
64 static void
decode_rtc_wkalrm(struct tcb * const tcp,const kernel_ulong_t addr)65 decode_rtc_wkalrm(struct tcb *const tcp, const kernel_ulong_t addr)
66 {
67 struct rtc_wkalrm wk;
68
69 if (!umove_or_printaddr(tcp, addr, &wk)) {
70 tprintf("{enabled=%d, pending=%d, time=", wk.enabled, wk.pending);
71 print_rtc_time(tcp, &wk.time);
72 tprints("}");
73 }
74 }
75
76 static void
decode_rtc_pll_info(struct tcb * const tcp,const kernel_ulong_t addr)77 decode_rtc_pll_info(struct tcb *const tcp, const kernel_ulong_t addr)
78 {
79 struct_rtc_pll_info pll;
80
81 if (!umove_or_printaddr(tcp, addr, &pll))
82 tprintf("{pll_ctrl=%d, pll_value=%d, pll_max=%d, pll_min=%d"
83 ", pll_posmult=%d, pll_negmult=%d, pll_clock=%ld}",
84 pll.pll_ctrl, pll.pll_value, pll.pll_max, pll.pll_min,
85 pll.pll_posmult, pll.pll_negmult, (long) pll.pll_clock);
86 }
87
MPERS_PRINTER_DECL(int,rtc_ioctl,struct tcb * const tcp,const unsigned int code,const kernel_ulong_t arg)88 MPERS_PRINTER_DECL(int, rtc_ioctl, struct tcb *const tcp,
89 const unsigned int code, const kernel_ulong_t arg)
90 {
91 switch (code) {
92 case RTC_ALM_READ:
93 case RTC_RD_TIME:
94 if (entering(tcp))
95 return 0;
96 ATTRIBUTE_FALLTHROUGH;
97 case RTC_ALM_SET:
98 case RTC_SET_TIME:
99 tprints(", ");
100 decode_rtc_time(tcp, arg);
101 break;
102 case RTC_IRQP_SET:
103 case RTC_EPOCH_SET:
104 tprintf(", %" PRI_klu, arg);
105 break;
106 case RTC_IRQP_READ:
107 case RTC_EPOCH_READ:
108 if (entering(tcp))
109 return 0;
110 tprints(", ");
111 printnum_ulong(tcp, arg);
112 break;
113 case RTC_WKALM_RD:
114 if (entering(tcp))
115 return 0;
116 ATTRIBUTE_FALLTHROUGH;
117 case RTC_WKALM_SET:
118 tprints(", ");
119 decode_rtc_wkalrm(tcp, arg);
120 break;
121 case RTC_PLL_GET:
122 if (entering(tcp))
123 return 0;
124 ATTRIBUTE_FALLTHROUGH;
125 case RTC_PLL_SET:
126 tprints(", ");
127 decode_rtc_pll_info(tcp, arg);
128 break;
129 #ifdef RTC_VL_READ
130 case RTC_VL_READ:
131 if (entering(tcp))
132 return 0;
133 tprints(", ");
134 printnum_int(tcp, arg, "%d");
135 break;
136 #endif
137 case RTC_AIE_ON:
138 case RTC_AIE_OFF:
139 case RTC_UIE_ON:
140 case RTC_UIE_OFF:
141 case RTC_PIE_ON:
142 case RTC_PIE_OFF:
143 case RTC_WIE_ON:
144 case RTC_WIE_OFF:
145 #ifdef RTC_VL_CLR
146 case RTC_VL_CLR:
147 #endif
148 /* no args */
149 break;
150 default:
151 return RVAL_DECODED;
152 }
153
154 return RVAL_IOCTL_DECODED;
155 }
156