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 #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 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 * 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 * 184 sysdecode_linux_sigprocmask_how(int how) 185 { 186 187 return (lookup_value(sigprocmaskhow, how)); 188 } 189 190 bool 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 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 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 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