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