diff options
Diffstat (limited to 'src/pkg/syscall/mkerrors.sh')
| -rwxr-xr-x | src/pkg/syscall/mkerrors.sh | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/src/pkg/syscall/mkerrors.sh b/src/pkg/syscall/mkerrors.sh new file mode 100755 index 000000000..c90cd1c00 --- /dev/null +++ b/src/pkg/syscall/mkerrors.sh @@ -0,0 +1,235 @@ +#!/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 <bits/sockaddr.h> +#include <sys/epoll.h> +#include <sys/inotify.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/mount.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <linux/if_addr.h> +#include <linux/if_ether.h> +#include <linux/if_tun.h> +#include <linux/filter.h> +#include <linux/netlink.h> +#include <linux/reboot.h> +#include <linux/rtnetlink.h> +#include <linux/ptrace.h> +#include <linux/wait.h> +#include <net/if.h> +#include <net/if_arp.h> +#include <netpacket/packet.h> +' + +includes_Darwin=' +#define _DARWIN_C_SOURCE +#define KERNEL +#define _DARWIN_USE_64_BIT_INODE +#include <sys/types.h> +#include <sys/event.h> +#include <sys/ptrace.h> +#include <sys/socket.h> +#include <sys/sockio.h> +#include <sys/sysctl.h> +#include <sys/mman.h> +#include <sys/wait.h> +#include <net/bpf.h> +#include <net/if.h> +#include <net/if_types.h> +#include <net/route.h> +#include <netinet/in.h> +#include <netinet/ip.h> +#include <netinet/ip_mroute.h> +#include <termios.h> +' + +includes_FreeBSD=' +#include <sys/types.h> +#include <sys/event.h> +#include <sys/socket.h> +#include <sys/sockio.h> +#include <sys/sysctl.h> +#include <sys/wait.h> +#include <sys/ioctl.h> +#include <net/bpf.h> +#include <net/if.h> +#include <net/if_types.h> +#include <net/route.h> +#include <netinet/in.h> +#include <termios.h> +#include <netinet/ip.h> +#include <netinet/ip_mroute.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 !~ /^EPROC_/ && + $2 !~ /^EQUIV_/ && + $2 !~ /^EXPR_/ && + $2 ~ /^E[A-Z0-9_]+$/ || + $2 ~ /^SIG[^_]/ || + $2 ~ /^IN_/ || + $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV)_/ || + $2 == "SOMAXCONN" || + $2 == "NAME_MAX" || + $2 == "IFNAMSIZ" || + $2 == "CTL_NET" || + $2 == "CTL_MAXNAME" || + $2 ~ /^(MS|MNT)_/ || + $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ || + $2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ || + $2 ~ /^LINUX_REBOOT_CMD_/ || + $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ || + $2 !~ "NLA_TYPE_MASK" && + $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|RTM|RTN|RTPROT|RTA|RTAX|RTNH|ARPHRD|ETH_P)_/ || + $2 ~ /^SIOC/ || + $2 ~ /^TIOC/ || + $2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ || + $2 ~ /^BIOC/ || + $2 !~ /^(BPF_TIMEVAL)$/ && + $2 ~ /^(BPF|DLT)_/ || + $2 !~ "WMESGLEN" && + $2 ~ /^W[A-Z0-9]+$/ {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 |