| #!/usr/bin/env bash |
| # Copyright 2009 The Go Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style |
| # license that can be found in the LICENSE file. |
| |
| # Generate Go code listing errors and other #defined constant |
| # values (ENAMETOOLONG etc.), by asking the preprocessor |
| # about the definitions. |
| |
| unset LANG |
| export LC_ALL=C |
| export LC_CTYPE=C |
| |
| GCC=gcc |
| |
| uname=$(uname) |
| |
| includes_Linux=' |
| #define _LARGEFILE_SOURCE |
| #define _LARGEFILE64_SOURCE |
| #define _FILE_OFFSET_BITS 64 |
| #define _GNU_SOURCE |
| |
| #include <sys/types.h> |
| #include <sys/epoll.h> |
| #include <sys/inotify.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| #include <sys/stat.h> |
| #include <linux/ptrace.h> |
| #include <linux/wait.h> |
| #include <linux/if_tun.h> |
| #include <net/if.h> |
| #include <netpacket/packet.h> |
| ' |
| |
| includes_Darwin=' |
| #define __DARWIN_UNIX03 0 |
| #define KERNEL |
| #define _DARWIN_USE_64_BIT_INODE |
| #include <sys/wait.h> |
| #include <sys/event.h> |
| ' |
| |
| includes_FreeBSD=' |
| #include <sys/wait.h> |
| #include <sys/event.h> |
| ' |
| |
| includes=' |
| #include <sys/types.h> |
| #include <fcntl.h> |
| #include <dirent.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <netinet/ip.h> |
| #include <netinet/ip6.h> |
| #include <netinet/tcp.h> |
| #include <errno.h> |
| #include <sys/signal.h> |
| #include <signal.h> |
| ' |
| |
| ccflags="" |
| next=false |
| for i |
| do |
| if $next; then |
| ccflags="$ccflags $i" |
| next=false |
| elif [ "$i" = "-f" ]; then |
| next=true |
| fi |
| done |
| |
| # Write godefs input. |
| ( |
| indirect="includes_$(uname)" |
| echo "${!indirect} $includes" |
| echo |
| echo 'enum {' |
| |
| # The gcc command line prints all the #defines |
| # it encounters while processing the input |
| echo "${!indirect} $includes" | $GCC -x c - -E -dM $ccflags | |
| awk ' |
| $1 != "#define" || $2 ~ /\(/ {next} |
| |
| $2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers |
| $2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next} |
| $2 ~ /^(SCM_SRCRT)$/ {next} |
| $2 ~ /^(MAP_FAILED)$/ {next} |
| |
| $2 !~ /^ETH_/ && |
| $2 ~ /^E[A-Z0-9_]+$/ || |
| $2 ~ /^SIG[^_]/ || |
| $2 ~ /^IN_/ || |
| $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|IFF)_/ || |
| $2 == "SOMAXCONN" || |
| $2 == "NAME_MAX" || |
| $2 == "IFNAMSIZ" || |
| $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ || |
| $2 ~ /^(O|F|FD|NAME|S|PTRACE)_/ || |
| $2 ~ /^SIO/ || |
| $2 ~ /^W[A-Z0-9]+$/ {printf("\t$%s = %s,\n", $2, $2)} |
| $2 ~ /^__WCOREFLAG$/ {next} |
| $2 ~ /^__W[A-Z0-9]+$/ {printf("\t$%s = %s,\n", substr($2,3), $2)} |
| |
| {next} |
| ' | sort |
| |
| echo '};' |
| ) >_const.c |
| |
| # Pull out just the error names for later. |
| errors=$( |
| echo '#include <errno.h>' | $GCC -x c - -E -dM $ccflags | |
| awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' | |
| sort |
| ) |
| |
| echo '// mkerrors.sh' "$@" |
| echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT' |
| echo |
| godefs -c $GCC "$@" -gsyscall "$@" _const.c |
| |
| # Run C program to print error strings. |
| ( |
| /bin/echo " |
| #include <stdio.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <string.h> |
| |
| #define nelem(x) (sizeof(x)/sizeof((x)[0])) |
| |
| enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below |
| |
| int errors[] = { |
| " |
| for i in $errors |
| do |
| /bin/echo ' '$i, |
| done |
| |
| # Use /bin/echo to avoid builtin echo, |
| # which interprets \n itself |
| /bin/echo ' |
| }; |
| |
| static int |
| intcmp(const void *a, const void *b) |
| { |
| return *(int*)a - *(int*)b; |
| } |
| |
| int |
| main(void) |
| { |
| int i, j, e; |
| char buf[1024]; |
| |
| printf("\n\n// Error table\n"); |
| printf("var errors = [...]string {\n"); |
| qsort(errors, nelem(errors), sizeof errors[0], intcmp); |
| for(i=0; i<nelem(errors); i++) { |
| e = errors[i]; |
| if(i > 0 && errors[i-1] == e) |
| continue; |
| strcpy(buf, strerror(e)); |
| // lowercase first letter: Bad -> bad, but STREAM -> STREAM. |
| if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z) |
| buf[0] += a - A; |
| printf("\t%d: \"%s\",\n", e, buf); |
| } |
| printf("}\n\n"); |
| return 0; |
| } |
| |
| ' |
| ) >_errors.c |
| |
| $GCC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.c |