1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2022 Dmitry Chagin <dchagin@FreeBSD.org>
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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 #include <sys/types.h>
30 #include <sys/proc.h>
31 #include <stdbool.h>
32 #include <stdio.h>
33 #include <sysdecode.h>
34
35 #include "support.h"
36
37 #ifdef __aarch64__
38 #include <arm64/linux/linux.h>
39 #elif __i386__
40 #include <i386/linux/linux.h>
41 #elif __amd64__
42 #ifdef COMPAT_32BIT
43 #include <amd64/linux32/linux.h>
44 #else
45 #include <amd64/linux/linux.h>
46 #endif
47 #else
48 #error "Unsupported Linux arch"
49 #endif
50
51 #include <compat/linux/linux.h>
52 #include <compat/linux/linux_file.h>
53 #include <compat/linux/linux_fork.h>
54 #include <compat/linux/linux_time.h>
55
56 #define X(a,b) { a, #b },
57 #define XEND { 0, NULL }
58
59 #define TABLE_START(n) static struct name_table n[] = {
60 #define TABLE_ENTRY X
61 #define TABLE_END XEND };
62
63 #include "tables_linux.h"
64
65 #undef TABLE_START
66 #undef TABLE_ENTRY
67 #undef TABLE_END
68
69 static const char *linux_signames[] = {
70 [LINUX_SIGHUP] = "SIGHUP",
71 [LINUX_SIGINT] = "SIGINT",
72 [LINUX_SIGQUIT] = "SIGQUIT",
73 [LINUX_SIGILL] = "SIGILL",
74 [LINUX_SIGTRAP] = "SIGTRAP",
75 [LINUX_SIGABRT] = "SIGABRT",
76 [LINUX_SIGBUS] = "SIGBUS",
77 [LINUX_SIGFPE] = "SIGFPE",
78 [LINUX_SIGKILL] = "SIGKILL",
79 [LINUX_SIGUSR1] = "SIGUSR1",
80 [LINUX_SIGSEGV] = "SIGSEGV",
81 [LINUX_SIGUSR2] = "SIGUSR2",
82 [LINUX_SIGPIPE] = "SIGPIPE",
83 [LINUX_SIGALRM] = "SIGALRM",
84 [LINUX_SIGTERM] = "SIGTERM",
85 [LINUX_SIGSTKFLT] = "SIGSTKFLT",
86 [LINUX_SIGCHLD] = "SIGCHLD",
87 [LINUX_SIGCONT] = "SIGCONT",
88 [LINUX_SIGSTOP] = "SIGSTOP",
89 [LINUX_SIGTSTP] = "SIGTSTP",
90 [LINUX_SIGTTIN] = "SIGTTIN",
91 [LINUX_SIGTTOU] = "SIGTTOU",
92 [LINUX_SIGURG] = "SIGURG",
93 [LINUX_SIGXCPU] = "SIGXCPU",
94 [LINUX_SIGXFSZ] = "SIGXFSZ",
95 [LINUX_SIGVTALRM] = "SIGVTALRM",
96 [LINUX_SIGPROF] = "SIGPROF",
97 [LINUX_SIGWINCH] = "SIGWINCH",
98 [LINUX_SIGIO] = "SIGIO",
99 [LINUX_SIGPWR] = "SIGPWR",
100 [LINUX_SIGSYS] = "SIGSYS",
101
102 [LINUX_SIGRTMIN] = "SIGCANCEL",
103 [LINUX_SIGRTMIN + 1] = "SIGSETXID",
104 [LINUX_SIGRTMIN + 2] = "SIGRT2",
105 [LINUX_SIGRTMIN + 3] = "SIGRT3",
106 [LINUX_SIGRTMIN + 4] = "SIGRT4",
107 [LINUX_SIGRTMIN + 5] = "SIGRT5",
108 [LINUX_SIGRTMIN + 6] = "SIGRT6",
109 [LINUX_SIGRTMIN + 7] = "SIGRT7",
110 [LINUX_SIGRTMIN + 8] = "SIGRT8",
111 [LINUX_SIGRTMIN + 9] = "SIGRT9",
112 [LINUX_SIGRTMIN + 10] = "SIGRT10",
113 [LINUX_SIGRTMIN + 11] = "SIGRT11",
114 [LINUX_SIGRTMIN + 12] = "SIGRT12",
115 [LINUX_SIGRTMIN + 13] = "SIGRT13",
116 [LINUX_SIGRTMIN + 14] = "SIGRT14",
117 [LINUX_SIGRTMIN + 15] = "SIGRT15",
118 [LINUX_SIGRTMIN + 16] = "SIGRT16",
119 [LINUX_SIGRTMIN + 17] = "SIGRT17",
120 [LINUX_SIGRTMIN + 18] = "SIGRT18",
121 [LINUX_SIGRTMIN + 19] = "SIGRT19",
122 [LINUX_SIGRTMIN + 20] = "SIGRT20",
123 [LINUX_SIGRTMIN + 21] = "SIGRT21",
124 [LINUX_SIGRTMIN + 22] = "SIGRT22",
125 [LINUX_SIGRTMIN + 23] = "SIGRT23",
126 [LINUX_SIGRTMIN + 24] = "SIGRT24",
127 [LINUX_SIGRTMIN + 25] = "SIGRT25",
128 [LINUX_SIGRTMIN + 26] = "SIGRT26",
129 [LINUX_SIGRTMIN + 27] = "SIGRT27",
130 [LINUX_SIGRTMIN + 28] = "SIGRT28",
131 [LINUX_SIGRTMIN + 29] = "SIGRT29",
132 [LINUX_SIGRTMIN + 30] = "SIGRT30",
133 [LINUX_SIGRTMIN + 31] = "SIGRT31",
134 [LINUX_SIGRTMIN + 32] = "SIGRTMAX",
135 };
136 _Static_assert(nitems(linux_signames) == LINUX_SIGRTMAX + 1,
137 "invalid entries count in linux_signames");
138
139 void
sysdecode_linux_clockid(FILE * fp,clockid_t which)140 sysdecode_linux_clockid(FILE *fp, clockid_t which)
141 {
142 const char *str;
143 clockid_t ci;
144 pid_t pid;
145
146 if (which >= 0) {
147 str = lookup_value(clockids, which);
148 if (str == NULL)
149 fprintf(fp, "UNKNOWN(%d)", which);
150 else
151 fputs(str, fp);
152 return;
153 }
154 if ((which & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD_MASK) {
155 fputs("INVALID PERTHREAD|CLOCKFD", fp);
156 goto pidp;
157 }
158 ci = LINUX_CPUCLOCK_WHICH(which);
159 if (LINUX_CPUCLOCK_PERTHREAD(which) == true)
160 fputs("THREAD|", fp);
161 else
162 fputs("PROCESS|", fp);
163 str = lookup_value(clockcpuids, ci);
164 if (str != NULL)
165 fputs(str, fp);
166 else {
167 if (ci == LINUX_CLOCKFD)
168 fputs("CLOCKFD", fp);
169 else
170 fprintf(fp, "UNKNOWN(%d)", which);
171 }
172
173 pidp:
174 pid = LINUX_CPUCLOCK_ID(which);
175 fprintf(fp, "(%d)", pid);
176 }
177
178 const char *
sysdecode_linux_signal(int sig)179 sysdecode_linux_signal(int sig)
180 {
181
182 if ((unsigned)sig < nitems(linux_signames))
183 return (linux_signames[sig]);
184 return (NULL);
185 }
186
187 const char *
sysdecode_linux_sigprocmask_how(int how)188 sysdecode_linux_sigprocmask_how(int how)
189 {
190
191 return (lookup_value(sigprocmaskhow, how));
192 }
193
194 bool
sysdecode_linux_clock_flags(FILE * fp,int flags,int * rem)195 sysdecode_linux_clock_flags(FILE *fp, int flags, int *rem)
196 {
197
198 return (print_mask_int(fp, clockflags, flags, rem));
199 }
200
201 bool
sysdecode_linux_atflags(FILE * fp,int flag,int * rem)202 sysdecode_linux_atflags(FILE *fp, int flag, int *rem)
203 {
204
205 return (print_mask_int(fp, atflags, flag, rem));
206 }
207
208 bool
sysdecode_linux_open_flags(FILE * fp,int flags,int * rem)209 sysdecode_linux_open_flags(FILE *fp, int flags, int *rem)
210 {
211 bool printed;
212 int mode;
213 uintmax_t val;
214
215 mode = flags & LINUX_O_ACCMODE;
216 flags &= ~LINUX_O_ACCMODE;
217 switch (mode) {
218 case LINUX_O_RDONLY:
219 fputs("O_RDONLY", fp);
220 printed = true;
221 mode = 0;
222 break;
223 case LINUX_O_WRONLY:
224 fputs("O_WRONLY", fp);
225 printed = true;
226 mode = 0;
227 break;
228 case LINUX_O_RDWR:
229 fputs("O_RDWR", fp);
230 printed = true;
231 mode = 0;
232 break;
233 default:
234 printed = false;
235 }
236 val = (unsigned)flags;
237 print_mask_part(fp, openflags, &val, &printed);
238 if (rem != NULL)
239 *rem = val | mode;
240 return (printed);
241 }
242
243 bool
sysdecode_linux_clone_flags(FILE * fp,int flags,int * rem)244 sysdecode_linux_clone_flags(FILE *fp, int flags, int *rem)
245 {
246 uintmax_t val;
247 bool printed;
248 int sig;
249
250 sig = flags & LINUX_CSIGNAL;
251 if (sig != 0)
252 fprintf(fp, "(%s)", sysdecode_linux_signal(sig));
253 val = (unsigned)flags & ~LINUX_CSIGNAL;
254 print_mask_part(fp, cloneflags, &val, &printed);
255 if (rem != NULL)
256 *rem = val;
257 return (printed);
258 }
259