1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2022 Dmitry Chagin <[email protected]>
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 #include <amd64/linux/linux.h>
43 #else
44 #error "Unsupported Linux arch"
45 #endif
46
47 #include <compat/linux/linux.h>
48 #include <compat/linux/linux_file.h>
49 #include <compat/linux/linux_fork.h>
50 #include <compat/linux/linux_time.h>
51
52 #define X(a,b) { a, #b },
53 #define XEND { 0, NULL }
54
55 #define TABLE_START(n) static struct name_table n[] = {
56 #define TABLE_ENTRY X
57 #define TABLE_END XEND };
58
59 #include "tables_linux.h"
60
61 #undef TABLE_START
62 #undef TABLE_ENTRY
63 #undef TABLE_END
64
65 static const char *linux_signames[] = {
66 [LINUX_SIGHUP] = "SIGHUP",
67 [LINUX_SIGINT] = "SIGINT",
68 [LINUX_SIGQUIT] = "SIGQUIT",
69 [LINUX_SIGILL] = "SIGILL",
70 [LINUX_SIGTRAP] = "SIGTRAP",
71 [LINUX_SIGABRT] = "SIGABRT",
72 [LINUX_SIGBUS] = "SIGBUS",
73 [LINUX_SIGFPE] = "SIGFPE",
74 [LINUX_SIGKILL] = "SIGKILL",
75 [LINUX_SIGUSR1] = "SIGUSR1",
76 [LINUX_SIGSEGV] = "SIGSEGV",
77 [LINUX_SIGUSR2] = "SIGUSR2",
78 [LINUX_SIGPIPE] = "SIGPIPE",
79 [LINUX_SIGALRM] = "SIGALRM",
80 [LINUX_SIGTERM] = "SIGTERM",
81 [LINUX_SIGSTKFLT] = "SIGSTKFLT",
82 [LINUX_SIGCHLD] = "SIGCHLD",
83 [LINUX_SIGCONT] = "SIGCONT",
84 [LINUX_SIGSTOP] = "SIGSTOP",
85 [LINUX_SIGTSTP] = "SIGTSTP",
86 [LINUX_SIGTTIN] = "SIGTTIN",
87 [LINUX_SIGTTOU] = "SIGTTOU",
88 [LINUX_SIGURG] = "SIGURG",
89 [LINUX_SIGXCPU] = "SIGXCPU",
90 [LINUX_SIGXFSZ] = "SIGXFSZ",
91 [LINUX_SIGVTALRM] = "SIGVTALRM",
92 [LINUX_SIGPROF] = "SIGPROF",
93 [LINUX_SIGWINCH] = "SIGWINCH",
94 [LINUX_SIGIO] = "SIGIO",
95 [LINUX_SIGPWR] = "SIGPWR",
96 [LINUX_SIGSYS] = "SIGSYS",
97
98 [LINUX_SIGRTMIN] = "SIGCANCEL",
99 [LINUX_SIGRTMIN + 1] = "SIGSETXID",
100 [LINUX_SIGRTMIN + 2] = "SIGRT2",
101 [LINUX_SIGRTMIN + 3] = "SIGRT3",
102 [LINUX_SIGRTMIN + 4] = "SIGRT4",
103 [LINUX_SIGRTMIN + 5] = "SIGRT5",
104 [LINUX_SIGRTMIN + 6] = "SIGRT6",
105 [LINUX_SIGRTMIN + 7] = "SIGRT7",
106 [LINUX_SIGRTMIN + 8] = "SIGRT8",
107 [LINUX_SIGRTMIN + 9] = "SIGRT9",
108 [LINUX_SIGRTMIN + 10] = "SIGRT10",
109 [LINUX_SIGRTMIN + 11] = "SIGRT11",
110 [LINUX_SIGRTMIN + 12] = "SIGRT12",
111 [LINUX_SIGRTMIN + 13] = "SIGRT13",
112 [LINUX_SIGRTMIN + 14] = "SIGRT14",
113 [LINUX_SIGRTMIN + 15] = "SIGRT15",
114 [LINUX_SIGRTMIN + 16] = "SIGRT16",
115 [LINUX_SIGRTMIN + 17] = "SIGRT17",
116 [LINUX_SIGRTMIN + 18] = "SIGRT18",
117 [LINUX_SIGRTMIN + 19] = "SIGRT19",
118 [LINUX_SIGRTMIN + 20] = "SIGRT20",
119 [LINUX_SIGRTMIN + 21] = "SIGRT21",
120 [LINUX_SIGRTMIN + 22] = "SIGRT22",
121 [LINUX_SIGRTMIN + 23] = "SIGRT23",
122 [LINUX_SIGRTMIN + 24] = "SIGRT24",
123 [LINUX_SIGRTMIN + 25] = "SIGRT25",
124 [LINUX_SIGRTMIN + 26] = "SIGRT26",
125 [LINUX_SIGRTMIN + 27] = "SIGRT27",
126 [LINUX_SIGRTMIN + 28] = "SIGRT28",
127 [LINUX_SIGRTMIN + 29] = "SIGRT29",
128 [LINUX_SIGRTMIN + 30] = "SIGRT30",
129 [LINUX_SIGRTMIN + 31] = "SIGRT31",
130 [LINUX_SIGRTMIN + 32] = "SIGRTMAX",
131 };
132 _Static_assert(nitems(linux_signames) == LINUX_SIGRTMAX + 1,
133 "invalid entries count in linux_signames");
134
135 void
sysdecode_linux_clockid(FILE * fp,clockid_t which)136 sysdecode_linux_clockid(FILE *fp, clockid_t which)
137 {
138 const char *str;
139 clockid_t ci;
140 pid_t pid;
141
142 if (which >= 0) {
143 str = lookup_value(clockids, which);
144 if (str == NULL)
145 fprintf(fp, "UNKNOWN(%d)", which);
146 else
147 fputs(str, fp);
148 return;
149 }
150 if ((which & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD_MASK) {
151 fputs("INVALID PERTHREAD|CLOCKFD", fp);
152 goto pidp;
153 }
154 ci = LINUX_CPUCLOCK_WHICH(which);
155 if (LINUX_CPUCLOCK_PERTHREAD(which) == true)
156 fputs("THREAD|", fp);
157 else
158 fputs("PROCESS|", fp);
159 str = lookup_value(clockcpuids, ci);
160 if (str != NULL)
161 fputs(str, fp);
162 else {
163 if (ci == LINUX_CLOCKFD)
164 fputs("CLOCKFD", fp);
165 else
166 fprintf(fp, "UNKNOWN(%d)", which);
167 }
168
169 pidp:
170 pid = LINUX_CPUCLOCK_ID(which);
171 fprintf(fp, "(%d)", pid);
172 }
173
174 const char *
sysdecode_linux_signal(int sig)175 sysdecode_linux_signal(int sig)
176 {
177
178 if ((unsigned)sig < nitems(linux_signames))
179 return (linux_signames[sig]);
180 return (NULL);
181 }
182
183 const char *
sysdecode_linux_sigprocmask_how(int how)184 sysdecode_linux_sigprocmask_how(int how)
185 {
186
187 return (lookup_value(sigprocmaskhow, how));
188 }
189
190 bool
sysdecode_linux_clock_flags(FILE * fp,int flags,int * rem)191 sysdecode_linux_clock_flags(FILE *fp, int flags, int *rem)
192 {
193
194 return (print_mask_int(fp, clockflags, flags, rem));
195 }
196
197 bool
sysdecode_linux_atflags(FILE * fp,int flag,int * rem)198 sysdecode_linux_atflags(FILE *fp, int flag, int *rem)
199 {
200
201 return (print_mask_int(fp, atflags, flag, rem));
202 }
203
204 bool
sysdecode_linux_open_flags(FILE * fp,int flags,int * rem)205 sysdecode_linux_open_flags(FILE *fp, int flags, int *rem)
206 {
207 bool printed;
208 int mode;
209 uintmax_t val;
210
211 mode = flags & LINUX_O_ACCMODE;
212 flags &= ~LINUX_O_ACCMODE;
213 switch (mode) {
214 case LINUX_O_RDONLY:
215 fputs("O_RDONLY", fp);
216 printed = true;
217 mode = 0;
218 break;
219 case LINUX_O_WRONLY:
220 fputs("O_WRONLY", fp);
221 printed = true;
222 mode = 0;
223 break;
224 case LINUX_O_RDWR:
225 fputs("O_RDWR", fp);
226 printed = true;
227 mode = 0;
228 break;
229 default:
230 printed = false;
231 }
232 val = (unsigned)flags;
233 print_mask_part(fp, openflags, &val, &printed);
234 if (rem != NULL)
235 *rem = val | mode;
236 return (printed);
237 }
238
239 bool
sysdecode_linux_clone_flags(FILE * fp,int flags,int * rem)240 sysdecode_linux_clone_flags(FILE *fp, int flags, int *rem)
241 {
242 uintmax_t val;
243 bool printed;
244 int sig;
245
246 sig = flags & LINUX_CSIGNAL;
247 if (sig != 0)
248 fprintf(fp, "(%s)", sysdecode_linux_signal(sig));
249 val = (unsigned)flags & ~LINUX_CSIGNAL;
250 print_mask_part(fp, cloneflags, &val, &printed);
251 if (rem != NULL)
252 *rem = val;
253 return (printed);
254 }
255