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
10unset LANG
11export LC_ALL=C
12export LC_CTYPE=C
13
14if test -z "$GOARCH" -o -z "$GOOS"; then
15 echo 1>&2 "GOARCH or GOOS not defined in environment"
16 exit 1
17fi
18
19# Check that we are using the new build system if we should
20if [[ "$GOOS" = "linux" ]] && [[ "$GOARCH" != "sparc64" ]]; then
21 if [[ "$GOLANG_SYS_BUILD" != "docker" ]]; then
22 echo 1>&2 "In the new build system, mkerrors should not be called directly."
23 echo 1>&2 "See README.md"
24 exit 1
25 fi
26fi
27
28CC=${CC:-cc}
29
30if [[ "$GOOS" = "solaris" ]]; then
31 # Assumes GNU versions of utilities in PATH.
32 export PATH=/usr/gnu/bin:$PATH
33fi
34
35uname=$(uname)
36
37includes_Darwin='
38#define _DARWIN_C_SOURCE
39#define KERNEL
40#define _DARWIN_USE_64_BIT_INODE
41#include <stdint.h>
42#include <sys/attr.h>
43#include <sys/types.h>
44#include <sys/event.h>
45#include <sys/ptrace.h>
46#include <sys/socket.h>
47#include <sys/sockio.h>
48#include <sys/sysctl.h>
49#include <sys/mman.h>
50#include <sys/mount.h>
51#include <sys/utsname.h>
52#include <sys/wait.h>
53#include <sys/xattr.h>
54#include <net/bpf.h>
55#include <net/if.h>
56#include <net/if_types.h>
57#include <net/route.h>
58#include <netinet/in.h>
59#include <netinet/ip.h>
60#include <termios.h>
61'
62
63includes_DragonFly='
64#include <sys/types.h>
65#include <sys/event.h>
66#include <sys/socket.h>
67#include <sys/sockio.h>
68#include <sys/sysctl.h>
69#include <sys/mman.h>
70#include <sys/wait.h>
71#include <sys/ioctl.h>
72#include <net/bpf.h>
73#include <net/if.h>
74#include <net/if_types.h>
75#include <net/route.h>
76#include <netinet/in.h>
77#include <termios.h>
78#include <netinet/ip.h>
79#include <net/ip_mroute/ip_mroute.h>
80'
81
82includes_FreeBSD='
83#include <sys/capability.h>
84#include <sys/param.h>
85#include <sys/types.h>
86#include <sys/event.h>
87#include <sys/socket.h>
88#include <sys/sockio.h>
89#include <sys/sysctl.h>
90#include <sys/mman.h>
91#include <sys/mount.h>
92#include <sys/wait.h>
93#include <sys/ioctl.h>
94#include <net/bpf.h>
95#include <net/if.h>
96#include <net/if_types.h>
97#include <net/route.h>
98#include <netinet/in.h>
99#include <termios.h>
100#include <netinet/ip.h>
101#include <netinet/ip_mroute.h>
102#include <sys/extattr.h>
103
104#if __FreeBSD__ >= 10
105#define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10
106#undef SIOCAIFADDR
107#define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data
108#undef SIOCSIFPHYADDR
109#define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data
110#endif
111'
112
113includes_Linux='
114#define _LARGEFILE_SOURCE
115#define _LARGEFILE64_SOURCE
116#ifndef __LP64__
117#define _FILE_OFFSET_BITS 64
118#endif
119#define _GNU_SOURCE
120
121// <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of
122// these structures. We just include them copied from <bits/termios.h>.
123#if defined(__powerpc__)
124struct sgttyb {
125 char sg_ispeed;
126 char sg_ospeed;
127 char sg_erase;
128 char sg_kill;
129 short sg_flags;
130};
131
132struct tchars {
133 char t_intrc;
134 char t_quitc;
135 char t_startc;
136 char t_stopc;
137 char t_eofc;
138 char t_brkc;
139};
140
141struct ltchars {
142 char t_suspc;
143 char t_dsuspc;
144 char t_rprntc;
145 char t_flushc;
146 char t_werasc;
147 char t_lnextc;
148};
149#endif
150
151#include <bits/sockaddr.h>
152#include <sys/epoll.h>
153#include <sys/eventfd.h>
154#include <sys/inotify.h>
155#include <sys/ioctl.h>
156#include <sys/mman.h>
157#include <sys/mount.h>
158#include <sys/prctl.h>
159#include <sys/stat.h>
160#include <sys/types.h>
161#include <sys/time.h>
162#include <sys/socket.h>
163#include <sys/xattr.h>
164#include <linux/if.h>
165#include <linux/if_alg.h>
166#include <linux/if_arp.h>
167#include <linux/if_ether.h>
168#include <linux/if_tun.h>
169#include <linux/if_packet.h>
170#include <linux/if_addr.h>
171#include <linux/falloc.h>
172#include <linux/filter.h>
173#include <linux/fs.h>
174#include <linux/keyctl.h>
175#include <linux/magic.h>
176#include <linux/netfilter/nfnetlink.h>
177#include <linux/netlink.h>
178#include <linux/perf_event.h>
179#include <linux/random.h>
180#include <linux/reboot.h>
181#include <linux/rtnetlink.h>
182#include <linux/ptrace.h>
183#include <linux/sched.h>
184#include <linux/seccomp.h>
185#include <linux/sockios.h>
186#include <linux/wait.h>
187#include <linux/icmpv6.h>
188#include <linux/serial.h>
189#include <linux/can.h>
190#include <linux/vm_sockets.h>
191#include <linux/taskstats.h>
192#include <linux/genetlink.h>
193#include <linux/stat.h>
194#include <linux/watchdog.h>
195#include <linux/hdreg.h>
196#include <linux/rtc.h>
197#include <net/route.h>
198#include <asm/termbits.h>
199
200#ifndef MSG_FASTOPEN
201#define MSG_FASTOPEN 0x20000000
202#endif
203
204#ifndef PTRACE_GETREGS
205#define PTRACE_GETREGS 0xc
206#endif
207
208#ifndef PTRACE_SETREGS
209#define PTRACE_SETREGS 0xd
210#endif
211
212#ifndef SOL_NETLINK
213#define SOL_NETLINK 270
214#endif
215
216#ifdef SOL_BLUETOOTH
217// SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
218// but it is already in bluetooth_linux.go
219#undef SOL_BLUETOOTH
220#endif
221
222// Certain constants are missing from the fs/crypto UAPI
223#define FS_KEY_DESC_PREFIX "fscrypt:"
224#define FS_KEY_DESC_PREFIX_SIZE 8
225#define FS_MAX_KEY_SIZE 64
226'
227
228includes_NetBSD='
229#include <sys/types.h>
230#include <sys/param.h>
231#include <sys/event.h>
232#include <sys/mman.h>
233#include <sys/socket.h>
234#include <sys/sockio.h>
235#include <sys/sysctl.h>
236#include <sys/termios.h>
237#include <sys/ttycom.h>
238#include <sys/wait.h>
239#include <net/bpf.h>
240#include <net/if.h>
241#include <net/if_types.h>
242#include <net/route.h>
243#include <netinet/in.h>
244#include <netinet/in_systm.h>
245#include <netinet/ip.h>
246#include <netinet/ip_mroute.h>
247#include <netinet/if_ether.h>
248
249// Needed since <sys/param.h> refers to it...
250#define schedppq 1
251'
252
253includes_OpenBSD='
254#include <sys/types.h>
255#include <sys/param.h>
256#include <sys/event.h>
257#include <sys/mman.h>
258#include <sys/socket.h>
259#include <sys/sockio.h>
260#include <sys/sysctl.h>
261#include <sys/termios.h>
262#include <sys/ttycom.h>
263#include <sys/wait.h>
264#include <net/bpf.h>
265#include <net/if.h>
266#include <net/if_types.h>
267#include <net/if_var.h>
268#include <net/route.h>
269#include <netinet/in.h>
270#include <netinet/in_systm.h>
271#include <netinet/ip.h>
272#include <netinet/ip_mroute.h>
273#include <netinet/if_ether.h>
274#include <net/if_bridge.h>
275
276// We keep some constants not supported in OpenBSD 5.5 and beyond for
277// the promise of compatibility.
278#define EMUL_ENABLED 0x1
279#define EMUL_NATIVE 0x2
280#define IPV6_FAITH 0x1d
281#define IPV6_OPTIONS 0x1
282#define IPV6_RTHDR_STRICT 0x1
283#define IPV6_SOCKOPT_RESERVED1 0x3
284#define SIOCGIFGENERIC 0xc020693a
285#define SIOCSIFGENERIC 0x80206939
286#define WALTSIG 0x4
287'
288
289includes_SunOS='
290#include <limits.h>
291#include <sys/types.h>
292#include <sys/socket.h>
293#include <sys/sockio.h>
294#include <sys/mman.h>
295#include <sys/wait.h>
296#include <sys/ioctl.h>
297#include <sys/mkdev.h>
298#include <net/bpf.h>
299#include <net/if.h>
300#include <net/if_arp.h>
301#include <net/if_types.h>
302#include <net/route.h>
303#include <netinet/in.h>
304#include <termios.h>
305#include <netinet/ip.h>
306#include <netinet/ip_mroute.h>
307'
308
309
310includes='
311#include <sys/types.h>
312#include <sys/file.h>
313#include <fcntl.h>
314#include <dirent.h>
315#include <sys/socket.h>
316#include <netinet/in.h>
317#include <netinet/ip.h>
318#include <netinet/ip6.h>
319#include <netinet/tcp.h>
320#include <errno.h>
321#include <sys/signal.h>
322#include <signal.h>
323#include <sys/resource.h>
324#include <time.h>
325'
326ccflags="$@"
327
328# Write go tool cgo -godefs input.
329(
330 echo package unix
331 echo
332 echo '/*'
333 indirect="includes_$(uname)"
334 echo "${!indirect} $includes"
335 echo '*/'
336 echo 'import "C"'
337 echo 'import "syscall"'
338 echo
339 echo 'const ('
340
341 # The gcc command line prints all the #defines
342 # it encounters while processing the input
343 echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
344 awk '
345 $1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
346
347 $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers
348 $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
349 $2 ~ /^(SCM_SRCRT)$/ {next}
350 $2 ~ /^(MAP_FAILED)$/ {next}
351 $2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.
352
353 $2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
354 $2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}
355
356 $2 !~ /^ETH_/ &&
357 $2 !~ /^EPROC_/ &&
358 $2 !~ /^EQUIV_/ &&
359 $2 !~ /^EXPR_/ &&
360 $2 ~ /^E[A-Z0-9_]+$/ ||
361 $2 ~ /^B[0-9_]+$/ ||
362 $2 ~ /^(OLD|NEW)DEV$/ ||
363 $2 == "BOTHER" ||
364 $2 ~ /^CI?BAUD(EX)?$/ ||
365 $2 == "IBSHIFT" ||
366 $2 ~ /^V[A-Z0-9]+$/ ||
367 $2 ~ /^CS[A-Z0-9]/ ||
368 $2 ~ /^I(SIG|CANON|CRNL|UCLC|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
369 $2 ~ /^IGN/ ||
370 $2 ~ /^IX(ON|ANY|OFF)$/ ||
371 $2 ~ /^IN(LCR|PCK)$/ ||
372 $2 !~ "X86_CR3_PCID_NOFLUSH" &&
373 $2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
374 $2 ~ /^C(LOCAL|READ|MSPAR|RTSCTS)$/ ||
375 $2 == "BRKINT" ||
376 $2 == "HUPCL" ||
377 $2 == "PENDIN" ||
378 $2 == "TOSTOP" ||
379 $2 == "XCASE" ||
380 $2 == "ALTWERASE" ||
381 $2 == "NOKERNINFO" ||
382 $2 ~ /^PAR/ ||
383 $2 ~ /^SIG[^_]/ ||
384 $2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ ||
385 $2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ ||
386 $2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ ||
387 $2 ~ /^O?XTABS$/ ||
388 $2 ~ /^TC[IO](ON|OFF)$/ ||
389 $2 ~ /^IN_/ ||
390 $2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
391 $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|T?PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
392 $2 ~ /^TP_STATUS_/ ||
393 $2 ~ /^FALLOC_/ ||
394 $2 == "ICMPV6_FILTER" ||
395 $2 == "SOMAXCONN" ||
396 $2 == "NAME_MAX" ||
397 $2 == "IFNAMSIZ" ||
398 $2 ~ /^CTL_(HW|KERN|MAXNAME|NET|QUERY)$/ ||
399 $2 ~ /^KERN_(HOSTNAME|OS(RELEASE|TYPE)|VERSION)$/ ||
400 $2 ~ /^HW_MACHINE$/ ||
401 $2 ~ /^SYSCTL_VERS/ ||
402 $2 ~ /^(MS|MNT|UMOUNT)_/ ||
403 $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
404 $2 ~ /^(O|F|E?FD|NAME|S|PTRACE|PT)_/ ||
405 $2 ~ /^LINUX_REBOOT_CMD_/ ||
406 $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
407 $2 !~ "NLA_TYPE_MASK" &&
408 $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTC|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ ||
409 $2 ~ /^SIOC/ ||
410 $2 ~ /^TIOC/ ||
411 $2 ~ /^TCGET/ ||
412 $2 ~ /^TCSET/ ||
413 $2 ~ /^TC(FLSH|SBRKP?|XONC)$/ ||
414 $2 !~ "RTF_BITS" &&
415 $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
416 $2 ~ /^BIOC/ ||
417 $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
418 $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|LOCKS|MEMLOCK|MSGQUEUE|NICE|NOFILE|NPROC|RSS|RTPRIO|RTTIME|SIGPENDING|STACK)|RLIM_INFINITY/ ||
419 $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
420 $2 ~ /^CLONE_[A-Z_]+/ ||
421 $2 !~ /^(BPF_TIMEVAL)$/ &&
422 $2 ~ /^(BPF|DLT)_/ ||
423 $2 ~ /^CLOCK_/ ||
424 $2 ~ /^CAN_/ ||
425 $2 ~ /^CAP_/ ||
426 $2 ~ /^ALG_/ ||
427 $2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE|IOC_(GET|SET)_ENCRYPTION)/ ||
428 $2 ~ /^GRND_/ ||
429 $2 ~ /^KEY_(SPEC|REQKEY_DEFL)_/ ||
430 $2 ~ /^KEYCTL_/ ||
431 $2 ~ /^PERF_EVENT_IOC_/ ||
432 $2 ~ /^SECCOMP_MODE_/ ||
433 $2 ~ /^SPLICE_/ ||
434 $2 !~ /^AUDIT_RECORD_MAGIC/ &&
435 $2 ~ /^[A-Z0-9_]+_MAGIC2?$/ ||
436 $2 ~ /^(VM|VMADDR)_/ ||
437 $2 ~ /^IOCTL_VM_SOCKETS_/ ||
438 $2 ~ /^(TASKSTATS|TS)_/ ||
439 $2 ~ /^CGROUPSTATS_/ ||
440 $2 ~ /^GENL_/ ||
441 $2 ~ /^STATX_/ ||
442 $2 ~ /^UTIME_/ ||
443 $2 ~ /^XATTR_(CREATE|REPLACE|NO(DEFAULT|FOLLOW|SECURITY)|SHOWCOMPRESSION)/ ||
444 $2 ~ /^ATTR_(BIT_MAP_COUNT|(CMN|VOL|FILE)_)/ ||
445 $2 ~ /^FSOPT_/ ||
446 $2 ~ /^WDIOC_/ ||
447 $2 ~ /^NFN/ ||
448 $2 ~ /^(HDIO|WIN|SMART)_/ ||
449 $2 !~ "WMESGLEN" &&
450 $2 ~ /^W[A-Z0-9]+$/ ||
451 $2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)}
452 $2 ~ /^__WCOREFLAG$/ {next}
453 $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
454
455 {next}
456 ' | sort
457
458 echo ')'
459) >_const.go
460
461# Pull out the error names for later.
462errors=$(
463 echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
464 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
465 sort
466)
467
468# Pull out the signal names for later.
469signals=$(
470 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
471 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
472 egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
473 sort
474)
475
476# Again, writing regexps to a file.
477echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
478 awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
479 sort >_error.grep
480echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
481 awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
482 egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
483 sort >_signal.grep
484
485echo '// mkerrors.sh' "$@"
486echo '// Code generated by the command above; see README.md. DO NOT EDIT.'
487echo
488echo "// +build ${GOARCH},${GOOS}"
489echo
490go tool cgo -godefs -- "$@" _const.go >_error.out
491cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
492echo
493echo '// Errors'
494echo 'const ('
495cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= syscall.Errno(\1)/'
496echo ')'
497
498echo
499echo '// Signals'
500echo 'const ('
501cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= syscall.Signal(\1)/'
502echo ')'
503
504# Run C program to print error and syscall strings.
505(
506 echo -E "
507#include <stdio.h>
508#include <stdlib.h>
509#include <errno.h>
510#include <ctype.h>
511#include <string.h>
512#include <signal.h>
513
514#define nelem(x) (sizeof(x)/sizeof((x)[0]))
515
516enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
517
518struct tuple {
519 int num;
520 const char *name;
521};
522
523struct tuple errors[] = {
524"
525 for i in $errors
526 do
527 echo -E ' {'$i', "'$i'" },'
528 done
529
530 echo -E "
531};
532
533struct tuple signals[] = {
534"
535 for i in $signals
536 do
537 echo -E ' {'$i', "'$i'" },'
538 done
539
540 # Use -E because on some systems bash builtin interprets \n itself.
541 echo -E '
542};
543
544static int
545tuplecmp(const void *a, const void *b)
546{
547 return ((struct tuple *)a)->num - ((struct tuple *)b)->num;
548}
549
550int
551main(void)
552{
553 int i, e;
554 char buf[1024], *p;
555
556 printf("\n\n// Error table\n");
557 printf("var errorList = [...]struct {\n");
558 printf("\tnum syscall.Errno\n");
559 printf("\tname string\n");
560 printf("\tdesc string\n");
561 printf("} {\n");
562 qsort(errors, nelem(errors), sizeof errors[0], tuplecmp);
563 for(i=0; i<nelem(errors); i++) {
564 e = errors[i].num;
565 if(i > 0 && errors[i-1].num == e)
566 continue;
567 strcpy(buf, strerror(e));
568 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
569 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
570 buf[0] += a - A;
571 printf("\t{ %d, \"%s\", \"%s\" },\n", e, errors[i].name, buf);
572 }
573 printf("}\n\n");
574
575 printf("\n\n// Signal table\n");
576 printf("var signalList = [...]struct {\n");
577 printf("\tnum syscall.Signal\n");
578 printf("\tname string\n");
579 printf("\tdesc string\n");
580 printf("} {\n");
581 qsort(signals, nelem(signals), sizeof signals[0], tuplecmp);
582 for(i=0; i<nelem(signals); i++) {
583 e = signals[i].num;
584 if(i > 0 && signals[i-1].num == e)
585 continue;
586 strcpy(buf, strsignal(e));
587 // lowercase first letter: Bad -> bad, but STREAM -> STREAM.
588 if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
589 buf[0] += a - A;
590 // cut trailing : number.
591 p = strrchr(buf, ":"[0]);
592 if(p)
593 *p = '\0';
594 printf("\t{ %d, \"%s\", \"%s\" },\n", e, signals[i].name, buf);
595 }
596 printf("}\n\n");
597
598 return 0;
599}
600
601'
602) >_errors.c
603
604$CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out