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/types.h>
29 #include <sys/proc.h>
30 #include <stdbool.h>
31 #include <stdio.h>
32 #include <sysdecode.h>
33
34 #include "support.h"
35
36 #ifdef __aarch64__
37 #include <arm64/linux/linux.h>
38 #elif __i386__
39 #include <i386/linux/linux.h>
40 #elif __amd64__
41 #include <amd64/linux/linux.h>
42 #else
43 #error "Unsupported Linux arch"
44 #endif
45
46 #include <compat/linux/linux.h>
47 #include <compat/linux/linux_file.h>
48 #include <compat/linux/linux_fork.h>
49 #include <compat/linux/linux_time.h>
50
51 #define X(a,b) { a, #b },
52 #define XEND { 0, NULL }
53
54 #define TABLE_START(n) static struct name_table n[] = {
55 #define TABLE_ENTRY X
56 #define TABLE_END XEND };
57
58 #include "tables_linux.h"
59
60 #undef TABLE_START
61 #undef TABLE_ENTRY
62 #undef TABLE_END
63
64 static const char *linux_signames[] = {
65 [LINUX_SIGHUP] = "SIGHUP",
66 [LINUX_SIGINT] = "SIGINT",
67 [LINUX_SIGQUIT] = "SIGQUIT",
68 [LINUX_SIGILL] = "SIGILL",
69 [LINUX_SIGTRAP] = "SIGTRAP",
70 [LINUX_SIGABRT] = "SIGABRT",
71 [LINUX_SIGBUS] = "SIGBUS",
72 [LINUX_SIGFPE] = "SIGFPE",
73 [LINUX_SIGKILL] = "SIGKILL",
74 [LINUX_SIGUSR1] = "SIGUSR1",
75 [LINUX_SIGSEGV] = "SIGSEGV",
76 [LINUX_SIGUSR2] = "SIGUSR2",
77 [LINUX_SIGPIPE] = "SIGPIPE",
78 [LINUX_SIGALRM] = "SIGALRM",
79 [LINUX_SIGTERM] = "SIGTERM",
80 [LINUX_SIGSTKFLT] = "SIGSTKFLT",
81 [LINUX_SIGCHLD] = "SIGCHLD",
82 [LINUX_SIGCONT] = "SIGCONT",
83 [LINUX_SIGSTOP] = "SIGSTOP",
84 [LINUX_SIGTSTP] = "SIGTSTP",
85 [LINUX_SIGTTIN] = "SIGTTIN",
86 [LINUX_SIGTTOU] = "SIGTTOU",
87 [LINUX_SIGURG] = "SIGURG",
88 [LINUX_SIGXCPU] = "SIGXCPU",
89 [LINUX_SIGXFSZ] = "SIGXFSZ",
90 [LINUX_SIGVTALRM] = "SIGVTALRM",
91 [LINUX_SIGPROF] = "SIGPROF",
92 [LINUX_SIGWINCH] = "SIGWINCH",
93 [LINUX_SIGIO] = "SIGIO",
94 [LINUX_SIGPWR] = "SIGPWR",
95 [LINUX_SIGSYS] = "SIGSYS",
96
97 [LINUX_SIGRTMIN] = "SIGCANCEL",
98 [LINUX_SIGRTMIN + 1] = "SIGSETXID",
99 [LINUX_SIGRTMIN + 2] = "SIGRT2",
100 [LINUX_SIGRTMIN + 3] = "SIGRT3",
101 [LINUX_SIGRTMIN + 4] = "SIGRT4",
102 [LINUX_SIGRTMIN + 5] = "SIGRT5",
103 [LINUX_SIGRTMIN + 6] = "SIGRT6",
104 [LINUX_SIGRTMIN + 7] = "SIGRT7",
105 [LINUX_SIGRTMIN + 8] = "SIGRT8",
106 [LINUX_SIGRTMIN + 9] = "SIGRT9",
107 [LINUX_SIGRTMIN + 10] = "SIGRT10",
108 [LINUX_SIGRTMIN + 11] = "SIGRT11",
109 [LINUX_SIGRTMIN + 12] = "SIGRT12",
110 [LINUX_SIGRTMIN + 13] = "SIGRT13",
111 [LINUX_SIGRTMIN + 14] = "SIGRT14",
112 [LINUX_SIGRTMIN + 15] = "SIGRT15",
113 [LINUX_SIGRTMIN + 16] = "SIGRT16",
114 [LINUX_SIGRTMIN + 17] = "SIGRT17",
115 [LINUX_SIGRTMIN + 18] = "SIGRT18",
116 [LINUX_SIGRTMIN + 19] = "SIGRT19",
117 [LINUX_SIGRTMIN + 20] = "SIGRT20",
118 [LINUX_SIGRTMIN + 21] = "SIGRT21",
119 [LINUX_SIGRTMIN + 22] = "SIGRT22",
120 [LINUX_SIGRTMIN + 23] = "SIGRT23",
121 [LINUX_SIGRTMIN + 24] = "SIGRT24",
122 [LINUX_SIGRTMIN + 25] = "SIGRT25",
123 [LINUX_SIGRTMIN + 26] = "SIGRT26",
124 [LINUX_SIGRTMIN + 27] = "SIGRT27",
125 [LINUX_SIGRTMIN + 28] = "SIGRT28",
126 [LINUX_SIGRTMIN + 29] = "SIGRT29",
127 [LINUX_SIGRTMIN + 30] = "SIGRT30",
128 [LINUX_SIGRTMIN + 31] = "SIGRT31",
129 [LINUX_SIGRTMIN + 32] = "SIGRTMAX",
130 };
131 _Static_assert(nitems(linux_signames) == LINUX_SIGRTMAX + 1,
132 "invalid entries count in linux_signames");
133
134 void
sysdecode_linux_clockid(FILE * fp,clockid_t which)135 sysdecode_linux_clockid(FILE *fp, clockid_t which)
136 {
137 const char *str;
138 clockid_t ci;
139 pid_t pid;
140
141 if (which >= 0) {
142 str = lookup_value(clockids, which);
143 if (str == NULL)
144 fprintf(fp, "UNKNOWN(%d)", which);
145 else
146 fputs(str, fp);
147 return;
148 }
149 if ((which & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD_MASK) {
150 fputs("INVALID PERTHREAD|CLOCKFD", fp);
151 goto pidp;
152 }
153 ci = LINUX_CPUCLOCK_WHICH(which);
154 if (LINUX_CPUCLOCK_PERTHREAD(which) == true)
155 fputs("THREAD|", fp);
156 else
157 fputs("PROCESS|", fp);
158 str = lookup_value(clockcpuids, ci);
159 if (str != NULL)
160 fputs(str, fp);
161 else {
162 if (ci == LINUX_CLOCKFD)
163 fputs("CLOCKFD", fp);
164 else
165 fprintf(fp, "UNKNOWN(%d)", which);
166 }
167
168 pidp:
169 pid = LINUX_CPUCLOCK_ID(which);
170 fprintf(fp, "(%d)", pid);
171 }
172
173 const char *
sysdecode_linux_signal(int sig)174 sysdecode_linux_signal(int sig)
175 {
176
177 if ((unsigned)sig < nitems(linux_signames))
178 return (linux_signames[sig]);
179 return (NULL);
180 }
181
182 const char *
sysdecode_linux_sigprocmask_how(int how)183 sysdecode_linux_sigprocmask_how(int how)
184 {
185
186 return (lookup_value(sigprocmaskhow, how));
187 }
188
189 bool
sysdecode_linux_clock_flags(FILE * fp,int flags,int * rem)190 sysdecode_linux_clock_flags(FILE *fp, int flags, int *rem)
191 {
192
193 return (print_mask_int(fp, clockflags, flags, rem));
194 }
195
196 bool
sysdecode_linux_atflags(FILE * fp,int flag,int * rem)197 sysdecode_linux_atflags(FILE *fp, int flag, int *rem)
198 {
199
200 return (print_mask_int(fp, atflags, flag, rem));
201 }
202
203 bool
sysdecode_linux_open_flags(FILE * fp,int flags,int * rem)204 sysdecode_linux_open_flags(FILE *fp, int flags, int *rem)
205 {
206 bool printed;
207 int mode;
208 uintmax_t val;
209
210 mode = flags & LINUX_O_ACCMODE;
211 flags &= ~LINUX_O_ACCMODE;
212 switch (mode) {
213 case LINUX_O_RDONLY:
214 fputs("O_RDONLY", fp);
215 printed = true;
216 mode = 0;
217 break;
218 case LINUX_O_WRONLY:
219 fputs("O_WRONLY", fp);
220 printed = true;
221 mode = 0;
222 break;
223 case LINUX_O_RDWR:
224 fputs("O_RDWR", fp);
225 printed = true;
226 mode = 0;
227 break;
228 default:
229 printed = false;
230 }
231 val = (unsigned)flags;
232 print_mask_part(fp, openflags, &val, &printed);
233 if (rem != NULL)
234 *rem = val | mode;
235 return (printed);
236 }
237
238 bool
sysdecode_linux_clone_flags(FILE * fp,int flags,int * rem)239 sysdecode_linux_clone_flags(FILE *fp, int flags, int *rem)
240 {
241 uintmax_t val;
242 bool printed;
243 int sig;
244
245 sig = flags & LINUX_CSIGNAL;
246 if (sig != 0)
247 fprintf(fp, "(%s)", sysdecode_linux_signal(sig));
248 val = (unsigned)flags & ~LINUX_CSIGNAL;
249 print_mask_part(fp, cloneflags, &val, &printed);
250 if (rem != NULL)
251 *rem = val;
252 return (printed);
253 }
254