mkerrors.sh raw
1 #!/usr/bin/env bash
2 # Copyright 2009 The Go Authors. All rights reserved.
3 # Use of this source code is governed by a BSD-style
4 # license that can be found in the LICENSE file.
5
6 # Generate Go code listing errors and other #defined constant
7 # values (ENAMETOOLONG etc.), by asking the preprocessor
8 # about the definitions.
9
10 unset LANG
11 export LC_ALL=C
12 export LC_CTYPE=C
13
14 CC=${CC:-gcc}
15
16 if [[ "$GOOS" -eq "solaris" ]]; then
17 # Assumes GNU versions of utilities in PATH.
18 export PATH=/usr/gnu/bin:$PATH
19 fi
20
21 uname=$(uname)
22
23 includes_AIX='
24 #include <net/if.h>
25 #include <net/netopt.h>
26 #include <netinet/ip_mroute.h>
27 #include <sys/mman.h>
28 #include <sys/protosw.h>
29 #include <sys/ptrace.h>
30 #include <sys/stropts.h>
31 #include <termios.h>
32 '
33
34 includes_Darwin='
35 #define _DARWIN_C_SOURCE
36 #define KERNEL
37 #define _DARWIN_USE_64_BIT_INODE
38 #include <sys/types.h>
39 #include <sys/event.h>
40 #include <sys/ptrace.h>
41 #include <sys/socket.h>
42 #include <sys/sockio.h>
43 #include <sys/sysctl.h>
44 #include <sys/mman.h>
45 #include <sys/wait.h>
46 #include <net/bpf.h>
47 #include <net/if.h>
48 #include <net/if_types.h>
49 #include <net/route.h>
50 #include <netinet/in.h>
51 #include <netinet/ip.h>
52 #include <netinet/ip_mroute.h>
53 #include <termios.h>
54 '
55
56 includes_DragonFly='
57 #include <sys/types.h>
58 #include <sys/event.h>
59 #include <sys/socket.h>
60 #include <sys/sockio.h>
61 #include <sys/sysctl.h>
62 #include <sys/mman.h>
63 #include <sys/wait.h>
64 #include <sys/ioctl.h>
65 #include <net/bpf.h>
66 #include <net/if.h>
67 #include <net/if_types.h>
68 #include <net/route.h>
69 #include <netinet/in.h>
70 #include <termios.h>
71 #include <netinet/ip.h>
72 #include <net/ip_mroute/ip_mroute.h>
73 '
74
75 includes_FreeBSD='
76 #include <sys/param.h>
77 #include <sys/types.h>
78 #include <sys/event.h>
79 #include <sys/socket.h>
80 #include <sys/sockio.h>
81 #include <sys/sysctl.h>
82 #include <sys/mman.h>
83 #include <sys/wait.h>
84 #include <sys/ioctl.h>
85 #include <net/bpf.h>
86 #include <net/if.h>
87 #include <net/if_types.h>
88 #include <net/route.h>
89 #include <netinet/in.h>
90 #include <termios.h>
91 #include <netinet/ip.h>
92 #include <netinet/ip_mroute.h>
93
94 #if __FreeBSD__ >= 10
95 #define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10
96 #undef SIOCAIFADDR
97 #define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data
98 #undef SIOCSIFPHYADDR
99 #define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data
100 #endif
101 '
102
103 includes_Linux='
104 #define _LARGEFILE_SOURCE
105 #define _LARGEFILE64_SOURCE
106 #ifndef __LP64__
107 #define _FILE_OFFSET_BITS 64
108 #endif
109 #define _GNU_SOURCE
110
111 #include <bits/sockaddr.h>
112 #include <sys/epoll.h>
113 #include <sys/inotify.h>
114 #include <sys/ioctl.h>
115 #include <sys/mman.h>
116 #include <sys/mount.h>
117 #include <sys/prctl.h>
118 #include <sys/stat.h>
119 #include <sys/types.h>
120 #include <sys/time.h>
121 #include <sys/socket.h>
122 #include <linux/if.h>
123 #include <linux/if_arp.h>
124 #include <linux/if_ether.h>
125 #include <linux/if_tun.h>
126 #include <linux/if_packet.h>
127 #include <linux/if_addr.h>
128 #include <linux/filter.h>
129 #include <linux/netlink.h>
130 #include <linux/reboot.h>
131 #include <linux/rtnetlink.h>
132 #include <linux/ptrace.h>
133 #include <linux/sched.h>
134 #include <linux/serial.h>
135 #include <linux/wait.h>
136 #include <linux/icmpv6.h>
137 #include <net/route.h>
138 #include <termios.h>
139
140 #ifndef MSG_FASTOPEN
141 #define MSG_FASTOPEN 0x20000000
142 #endif
143
144 #ifndef PTRACE_GETREGS
145 #define PTRACE_GETREGS 0xc
146 #endif
147
148 #ifndef PTRACE_SETREGS
149 #define PTRACE_SETREGS 0xd
150 #endif
151 '
152
153 includes_NetBSD='
154 #include <sys/types.h>
155 #include <sys/param.h>
156 #include <sys/event.h>
157 #include <sys/mman.h>
158 #include <sys/socket.h>
159 #include <sys/sockio.h>
160 #include <sys/sysctl.h>
161 #include <sys/termios.h>
162 #include <sys/ttycom.h>
163 #include <sys/wait.h>
164 #include <net/bpf.h>
165 #include <net/if.h>
166 #include <net/if_types.h>
167 #include <net/route.h>
168 #include <netinet/in.h>
169 #include <netinet/in_systm.h>
170 #include <netinet/ip.h>
171 #include <netinet/ip_mroute.h>
172 #include <netinet/if_ether.h>
173
174 // Needed since <sys/param.h> refers to it...
175 #define schedppq 1
176 '
177
178 includes_OpenBSD='
179 #include <sys/types.h>
180 #include <sys/param.h>
181 #include <sys/event.h>
182 #include <sys/mman.h>
183 #include <sys/socket.h>
184 #include <sys/sockio.h>
185 #include <sys/sysctl.h>
186 #include <sys/termios.h>
187 #include <sys/ttycom.h>
188 #include <sys/wait.h>
189 #include <net/bpf.h>
190 #include <net/if.h>
191 #include <net/if_types.h>
192 #include <net/if_var.h>
193 #include <net/route.h>
194 #include <netinet/in.h>
195 #include <netinet/in_systm.h>
196 #include <netinet/ip.h>
197 #include <netinet/ip_mroute.h>
198 #include <netinet/if_ether.h>
199 #include <net/if_bridge.h>
200
201 // We keep some constants not supported in OpenBSD 5.5 and beyond for
202 // the promise of compatibility.
203 #define EMUL_ENABLED 0x1
204 #define EMUL_NATIVE 0x2
205 #define IPV6_FAITH 0x1d
206 #define IPV6_OPTIONS 0x1
207 #define IPV6_RTHDR_STRICT 0x1
208 #define IPV6_SOCKOPT_RESERVED1 0x3
209 #define SIOCGIFGENERIC 0xc020693a
210 #define SIOCSIFGENERIC 0x80206939
211 #define WALTSIG 0x4
212 '
213
214 includes_SunOS='
215 #include <limits.h>
216 #include <sys/types.h>
217 #include <sys/socket.h>
218 #include <sys/sockio.h>
219 #include <sys/mman.h>
220 #include <sys/wait.h>
221 #include <sys/ioctl.h>
222 #include <net/bpf.h>
223 #include <net/if.h>
224 #include <net/if_arp.h>
225 #include <net/if_types.h>
226 #include <net/route.h>
227 #include <netinet/in.h>
228 #include <termios.h>
229 #include <netinet/ip.h>
230 #include <netinet/ip_mroute.h>
231 '
232
233 includes='
234 #include <sys/types.h>
235 #include <sys/file.h>
236 #include <fcntl.h>
237 #include <dirent.h>
238 #include <sys/socket.h>
239 #include <netinet/in.h>
240 #include <netinet/ip.h>
241 #include <netinet/ip6.h>
242 #include <netinet/tcp.h>
243 #include <errno.h>
244 #include <sys/signal.h>
245 #include <signal.h>
246 #include <sys/resource.h>
247 '
248
249 ccflags="$@"
250
251 # Write go tool cgo -godefs input.
252 (
253 echo package syscall
254 echo
255 echo '/*'
256 indirect="includes_$(uname)"
257 echo "${!indirect} $includes"
258 echo '*/'
259 echo 'import "C"'
260 echo
261 echo 'const ('
262
263 # The gcc command line prints all the #defines
264 # it encounters while processing the input
265 echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
266 awk '
267 $1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
268
269 $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers
270 $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
271 $2 ~ /^(SCM_SRCRT)$/ {next}
272 $2 ~ /^(MAP_FAILED)$/ {next}
273 $2 ~ /^CLONE_[A-Z_]+/ {next} # These are defined in exec_linux.go.
274 $2 ~ /^ELF_.*$/ {next} # <asm/elf.h> contains ELF_ARCH, etc.
275
276 $2 !~ /^ETH_/ &&
277 $2 !~ /^EPROC_/ &&
278 $2 !~ /^EQUIV_/ &&
279 $2 !~ /^EXPR_/ &&
280 $2 ~ /^E[A-Z0-9_]+$/ ||
281 $2 ~ /^B[0-9_]+$/ ||
282 $2 ~ /^V[A-Z0-9]+$/ ||
283 $2 ~ /^CS[A-Z0-9]/ ||
284 $2 ~ /^I(SIG|CANON|CRNL|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
285 $2 ~ /^IGN/ ||
286 $2 ~ /^IX(ON|ANY|OFF)$/ ||
287 $2 ~ /^IN(LCR|PCK)$/ ||
288 $2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
289 $2 ~ /^C(LOCAL|READ)$/ ||
290 $2 == "BRKINT" ||
291 $2 == "HUPCL" ||
292 $2 == "PENDIN" ||
293 $2 == "TOSTOP" ||
294 $2 ~ /^PAR/ ||
295 $2 ~ /^SIG[^_]/ ||
296 $2 ~ /^O[CNPFP][A-Z]+[^_][A-Z]+$/ ||
297 $2 ~ /^IN_/ ||
298 $2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
299 $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
300 $2 == "ICMPV6_FILTER" ||
301 $2 == "SOMAXCONN" ||
302 $2 == "NAME_MAX" ||
303 $2 == "IFNAMSIZ" ||
304 $2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ ||
305 $2 ~ /^SYSCTL_VERS/ ||
306 $2 ~ /^(MS|MNT)_/ ||
307 $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
308 $2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ ||
309 $2 ~ /^LINUX_REBOOT_CMD_/ ||
310 $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
311 $2 !~ "NLA_TYPE_MASK" &&
312 $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ ||
313 $2 ~ /^SIOC/ ||
314 $2 ~ /^TIOC/ ||
315 $2 !~ "RTF_BITS" &&
316 $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
317 $2 ~ /^BIOC/ ||
318 $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
319 $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ ||
320 $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
321 $2 !~ /^(BPF_TIMEVAL)$/ &&
322 $2 ~ /^(BPF|DLT)_/ ||
323 $2 !~ "WMESGLEN" &&
324 $2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)}
325 $2 ~ /^__WCOREFLAG$/ {next}
326 $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
327
328 {next}
329 ' | sort
330
331 echo ')'
332 ) >_const.go
333
334 # Pull out the error names for later.
335 errors=$(
336 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
337 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
338 sort
339 )
340
341 # Pull out the signal names for later.
342 signals=$(
343 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
344 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
345 grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT' |
346 sort
347 )
348
349 # Again, writing regexps to a file.
350 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
351 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
352 sort >_error.grep
353 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
354 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
355 grep -v 'SIGSTKSIZE\|SIGSTKSZ\|SIGRT' |
356 sort >_signal.grep
357
358 echo '// mkerrors.sh' "$@"
359 echo '// Code generated by the command above; DO NOT EDIT.'
360 echo
361 go tool cgo -godefs -- "$@" _const.go >_error.out
362 cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
363 echo
364 echo '// Errors'
365 echo 'const ('
366 cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= Errno(\1)/'
367 echo ')'
368
369 echo
370 echo '// Signals'
371 echo 'const ('
372 cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= Signal(\1)/'
373 echo ')'
374
375 # Run C program to print error and syscall strings.
376 (
377 echo -E "
378 #include <stdio.h>
379 #include <stdlib.h>
380 #include <errno.h>
381 #include <ctype.h>
382 #include <string.h>
383 #include <signal.h>
384
385 #define nelem(x) (sizeof(x)/sizeof((x)[0]))
386
387 enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
388
389 int errors[] = {
390 "
391 for i in $errors
392 do
393 echo -E ' '$i,
394 done
395
396 echo -E "
397 };
398
399 int signals[] = {
400 "
401 for i in $signals
402 do
403 echo -E ' '$i,
404 done
405
406 # Use -E because on some systems bash builtin interprets \n itself.
407 echo -E '
408 };
409
410 static int
411 intcmp(const void *a, const void *b)
412 {
413 return *(int*)a - *(int*)b;
414 }
415
416 int
417 main(void)
418 {
419 int i, j, e;
420 char buf[1024], *p;
421
422 printf("\n\n// Error table\n");
423 printf("var errors = [...]string {\n");
424 qsort(errors, nelem(errors), sizeof errors[0], intcmp);
425 for(i=0; i<nelem(errors); i++) {
426 e = errors[i];
427 if(i > 0 && errors[i-1] == e)
428 continue;
429 strcpy(buf, strerror(e));
430 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
431 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
432 buf[0] += a - A;
433 printf("\t%d: \"%s\",\n", e, buf);
434 }
435 printf("}\n\n");
436
437 printf("\n\n// Signal table\n");
438 printf("var signals = [...]string {\n");
439 qsort(signals, nelem(signals), sizeof signals[0], intcmp);
440 for(i=0; i<nelem(signals); i++) {
441 e = signals[i];
442 if(i > 0 && signals[i-1] == e)
443 continue;
444 strcpy(buf, strsignal(e));
445 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
446 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
447 buf[0] += a - A;
448 // cut trailing : number.
449 p = strrchr(buf, ":"[0]);
450 if(p)
451 *p = '\0';
452 printf("\t%d: \"%s\",\n", e, buf);
453 }
454 printf("}\n\n");
455
456 return 0;
457 }
458
459 '
460 ) >_errors.c
461
462 $CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out
463