#!/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 if test -z "$GOARCH" -o -z "$GOOS"; then echo 1>&2 "GOARCH or GOOS not defined in environment" exit 1 fi # Check that we are using the new build system if we should if [[ "$GOOS" = "linux" ]] && [[ "$GOLANG_SYS_BUILD" != "docker" ]]; then echo 1>&2 "In the Docker based build system, mkerrors should not be called directly." echo 1>&2 "See README.md" exit 1 fi if [[ "$GOOS" = "aix" ]]; then CC=${CC:-gcc} else CC=${CC:-cc} fi if [[ "$GOOS" = "solaris" ]]; then # Assumes GNU versions of utilities in PATH. export PATH=/usr/gnu/bin:$PATH fi uname=$(uname) includes_AIX=' #include <net/if.h> #include <net/netopt.h> #include <netinet/ip_mroute.h> #include <sys/protosw.h> #include <sys/stropts.h> #include <sys/mman.h> #include <sys/poll.h> #include <sys/select.h> #include <sys/termio.h> #include <termios.h> #include <fcntl.h> #define AF_LOCAL AF_UNIX ' includes_Darwin=' #define _DARWIN_C_SOURCE #define KERNEL #define _DARWIN_USE_64_BIT_INODE #include <stdint.h> #include <sys/attr.h> #include <sys/clonefile.h> #include <sys/kern_control.h> #include <sys/types.h> #include <sys/event.h> #include <sys/ptrace.h> #include <sys/select.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/sysctl.h> #include <sys/mman.h> #include <sys/mount.h> #include <sys/utsname.h> #include <sys/wait.h> #include <sys/xattr.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 <termios.h> ' includes_DragonFly=' #include <sys/types.h> #include <sys/event.h> #include <sys/select.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/mman.h> #include <sys/mount.h> #include <sys/wait.h> #include <sys/ioctl.h> #include <net/bpf.h> #include <net/if.h> #include <net/if_clone.h> #include <net/if_types.h> #include <net/route.h> #include <netinet/in.h> #include <termios.h> #include <netinet/ip.h> #include <net/ip_mroute/ip_mroute.h> ' includes_FreeBSD=' #include <sys/capsicum.h> #include <sys/param.h> #include <sys/types.h> #include <sys/disk.h> #include <sys/event.h> #include <sys/sched.h> #include <sys/select.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/mman.h> #include <sys/mount.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> #include <sys/extattr.h> #if __FreeBSD__ >= 10 #define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10 #undef SIOCAIFADDR #define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data #undef SIOCSIFPHYADDR #define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data #endif ' includes_Linux=' #define _LARGEFILE_SOURCE #define _LARGEFILE64_SOURCE #ifndef __LP64__ #define _FILE_OFFSET_BITS 64 #endif #define _GNU_SOURCE // <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of // these structures. We just include them copied from <bits/termios.h>. #if defined(__powerpc__) struct sgttyb { char sg_ispeed; char sg_ospeed; char sg_erase; char sg_kill; short sg_flags; }; struct tchars { char t_intrc; char t_quitc; char t_startc; char t_stopc; char t_eofc; char t_brkc; }; struct ltchars { char t_suspc; char t_dsuspc; char t_rprntc; char t_flushc; char t_werasc; char t_lnextc; }; #endif #include <bits/sockaddr.h> #include <sys/epoll.h> #include <sys/eventfd.h> #include <sys/inotify.h> #include <sys/ioctl.h> #include <sys/mman.h> #include <sys/mount.h> #include <sys/prctl.h> #include <sys/stat.h> #include <sys/types.h> #include <sys/time.h> #include <sys/select.h> #include <sys/signalfd.h> #include <sys/socket.h> #include <sys/timerfd.h> #include <sys/uio.h> #include <sys/xattr.h> #include <linux/bpf.h> #include <linux/can.h> #include <linux/can/error.h> #include <linux/can/raw.h> #include <linux/capability.h> #include <linux/cryptouser.h> #include <linux/devlink.h> #include <linux/dm-ioctl.h> #include <linux/errqueue.h> #include <linux/falloc.h> #include <linux/fanotify.h> #include <linux/filter.h> #include <linux/fs.h> #include <linux/fscrypt.h> #include <linux/fsverity.h> #include <linux/genetlink.h> #include <linux/hdreg.h> #include <linux/icmpv6.h> #include <linux/if.h> #include <linux/if_addr.h> #include <linux/if_alg.h> #include <linux/if_arp.h> #include <linux/if_ether.h> #include <linux/if_ppp.h> #include <linux/if_tun.h> #include <linux/if_packet.h> #include <linux/if_xdp.h> #include <linux/kexec.h> #include <linux/keyctl.h> #include <linux/loop.h> #include <linux/magic.h> #include <linux/memfd.h> #include <linux/module.h> #include <linux/netfilter/nfnetlink.h> #include <linux/netlink.h> #include <linux/net_namespace.h> #include <linux/nsfs.h> #include <linux/perf_event.h> #include <linux/ptrace.h> #include <linux/random.h> #include <linux/reboot.h> #include <linux/rtc.h> #include <linux/rtnetlink.h> #include <linux/sched.h> #include <linux/seccomp.h> #include <linux/serial.h> #include <linux/sockios.h> #include <linux/taskstats.h> #include <linux/tipc.h> #include <linux/vm_sockets.h> #include <linux/wait.h> #include <linux/watchdog.h> #include <mtd/ubi-user.h> #include <net/route.h> #if defined(__sparc__) // On sparc{,64}, the kernel defines struct termios2 itself which clashes with the // definition in glibc. As only the error constants are needed here, include the // generic termibits.h (which is included by termbits.h on sparc). #include <asm-generic/termbits.h> #else #include <asm/termbits.h> #endif #ifndef MSG_FASTOPEN #define MSG_FASTOPEN 0x20000000 #endif #ifndef PTRACE_GETREGS #define PTRACE_GETREGS 0xc #endif #ifndef PTRACE_SETREGS #define PTRACE_SETREGS 0xd #endif #ifndef SOL_NETLINK #define SOL_NETLINK 270 #endif #ifdef SOL_BLUETOOTH // SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h // but it is already in bluetooth_linux.go #undef SOL_BLUETOOTH #endif // Certain constants are missing from the fs/crypto UAPI #define FS_KEY_DESC_PREFIX "fscrypt:" #define FS_KEY_DESC_PREFIX_SIZE 8 #define FS_MAX_KEY_SIZE 64 // The code generator produces -0x1 for (~0), but an unsigned value is necessary // for the tipc_subscr timeout __u32 field. #undef TIPC_WAIT_FOREVER #define TIPC_WAIT_FOREVER 0xffffffff // Copied from linux/l2tp.h // Including linux/l2tp.h here causes conflicts between linux/in.h // and netinet/in.h included via net/route.h above. #define IPPROTO_L2TP 115 ' includes_NetBSD=' #include <sys/types.h> #include <sys/param.h> #include <sys/event.h> #include <sys/extattr.h> #include <sys/mman.h> #include <sys/mount.h> #include <sys/sched.h> #include <sys/select.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/sysctl.h> #include <sys/termios.h> #include <sys/ttycom.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/in_systm.h> #include <netinet/ip.h> #include <netinet/ip_mroute.h> #include <netinet/if_ether.h> // Needed since <sys/param.h> refers to it... #define schedppq 1 ' includes_OpenBSD=' #include <sys/types.h> #include <sys/param.h> #include <sys/event.h> #include <sys/mman.h> #include <sys/mount.h> #include <sys/select.h> #include <sys/sched.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/termios.h> #include <sys/ttycom.h> #include <sys/unistd.h> #include <sys/wait.h> #include <net/bpf.h> #include <net/if.h> #include <net/if_types.h> #include <net/if_var.h> #include <net/route.h> #include <netinet/in.h> #include <netinet/in_systm.h> #include <netinet/ip.h> #include <netinet/ip_mroute.h> #include <netinet/if_ether.h> #include <net/if_bridge.h> // We keep some constants not supported in OpenBSD 5.5 and beyond for // the promise of compatibility. #define EMUL_ENABLED 0x1 #define EMUL_NATIVE 0x2 #define IPV6_FAITH 0x1d #define IPV6_OPTIONS 0x1 #define IPV6_RTHDR_STRICT 0x1 #define IPV6_SOCKOPT_RESERVED1 0x3 #define SIOCGIFGENERIC 0xc020693a #define SIOCSIFGENERIC 0x80206939 #define WALTSIG 0x4 ' includes_SunOS=' #include <limits.h> #include <sys/types.h> #include <sys/select.h> #include <sys/socket.h> #include <sys/sockio.h> #include <sys/stat.h> #include <sys/stream.h> #include <sys/mman.h> #include <sys/wait.h> #include <sys/ioctl.h> #include <sys/mkdev.h> #include <net/bpf.h> #include <net/if.h> #include <net/if_arp.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 <sys/file.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> #include <sys/resource.h> #include <time.h> ' ccflags="$@" # Write go tool cgo -godefs input. ( echo package unix echo echo '/*' indirect="includes_$(uname)" echo "${!indirect} $includes" echo '*/' echo 'import "C"' echo 'import "syscall"' echo echo 'const (' # The gcc command line prints all the #defines # it encounters while processing the input echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags | awk ' $1 != "#define" || $2 ~ /\(/ || $3 == "" {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} $2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc. $2 ~ /^EXTATTR_NAMESPACE_NAMES/ || $2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next} $2 !~ /^ECCAPBITS/ && $2 !~ /^ETH_/ && $2 !~ /^EPROC_/ && $2 !~ /^EQUIV_/ && $2 !~ /^EXPR_/ && $2 ~ /^E[A-Z0-9_]+$/ || $2 ~ /^B[0-9_]+$/ || $2 ~ /^(OLD|NEW)DEV$/ || $2 == "BOTHER" || $2 ~ /^CI?BAUD(EX)?$/ || $2 == "IBSHIFT" || $2 ~ /^V[A-Z0-9]+$/ || $2 ~ /^CS[A-Z0-9]/ || $2 ~ /^I(SIG|CANON|CRNL|UCLC|EXTEN|MAXBEL|STRIP|UTF8)$/ || $2 ~ /^IGN/ || $2 ~ /^IX(ON|ANY|OFF)$/ || $2 ~ /^IN(LCR|PCK)$/ || $2 !~ "X86_CR3_PCID_NOFLUSH" && $2 ~ /(^FLU?SH)|(FLU?SH$)/ || $2 ~ /^C(LOCAL|READ|MSPAR|RTSCTS)$/ || $2 == "BRKINT" || $2 == "HUPCL" || $2 == "PENDIN" || $2 == "TOSTOP" || $2 == "XCASE" || $2 == "ALTWERASE" || $2 == "NOKERNINFO" || $2 == "NFDBITS" || $2 ~ /^PAR/ || $2 ~ /^SIG[^_]/ || $2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ || $2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ || $2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ || $2 ~ /^O?XTABS$/ || $2 ~ /^TC[IO](ON|OFF)$/ || $2 ~ /^IN_/ || $2 ~ /^LOCK_(SH|EX|NB|UN)$/ || $2 ~ /^LO_(KEY|NAME)_SIZE$/ || $2 ~ /^LOOP_(CLR|CTL|GET|SET)_/ || $2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|MCAST|EVFILT|NOTE|EV|SHUT|PROT|MAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ || $2 ~ /^TP_STATUS_/ || $2 ~ /^FALLOC_/ || $2 == "ICMPV6_FILTER" || $2 == "SOMAXCONN" || $2 == "NAME_MAX" || $2 == "IFNAMSIZ" || $2 ~ /^CTL_(HW|KERN|MAXNAME|NET|QUERY)$/ || $2 ~ /^KERN_(HOSTNAME|OS(RELEASE|TYPE)|VERSION)$/ || $2 ~ /^HW_MACHINE$/ || $2 ~ /^SYSCTL_VERS/ || $2 !~ "MNT_BITS" && $2 ~ /^(MS|MNT|UMOUNT)_/ || $2 ~ /^NS_GET_/ || $2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ || $2 ~ /^(O|F|[ES]?FD|NAME|S|PTRACE|PT|TFD)_/ || $2 ~ /^KEXEC_/ || $2 ~ /^LINUX_REBOOT_CMD_/ || $2 ~ /^LINUX_REBOOT_MAGIC[12]$/ || $2 ~ /^MODULE_INIT_/ || $2 !~ "NLA_TYPE_MASK" && $2 !~ /^RTC_VL_(ACCURACY|BACKUP|DATA)/ && $2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTC|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P|NETNSA)_/ || $2 ~ /^FIORDCHK$/ || $2 ~ /^SIOC/ || $2 ~ /^TIOC/ || $2 ~ /^TCGET/ || $2 ~ /^TCSET/ || $2 ~ /^TC(FLSH|SBRKP?|XONC)$/ || $2 !~ "RTF_BITS" && $2 ~ /^(IFF|IFT|NET_RT|RTM(GRP)?|RTF|RTV|RTA|RTAX)_/ || $2 ~ /^BIOC/ || $2 ~ /^DIOC/ || $2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ || $2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|LOCKS|MEMLOCK|MSGQUEUE|NICE|NOFILE|NPROC|RSS|RTPRIO|RTTIME|SIGPENDING|STACK)|RLIM_INFINITY/ || $2 ~ /^PRIO_(PROCESS|PGRP|USER)/ || $2 ~ /^CLONE_[A-Z_]+/ || $2 !~ /^(BPF_TIMEVAL|BPF_FIB_LOOKUP_[A-Z]+)$/ && $2 ~ /^(BPF|DLT)_/ || $2 ~ /^(CLOCK|TIMER)_/ || $2 ~ /^CAN_/ || $2 ~ /^CAP_/ || $2 ~ /^CP_/ || $2 ~ /^CPUSTATES$/ || $2 ~ /^CTLIOCGINFO$/ || $2 ~ /^ALG_/ || $2 ~ /^FI(CLONE|DEDUPERANGE)/ || $2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE)/ || $2 ~ /^FS_IOC_.*(ENCRYPTION|VERITY|[GS]ETFLAGS)/ || $2 ~ /^FS_VERITY_/ || $2 ~ /^FSCRYPT_/ || $2 ~ /^DM_/ || $2 ~ /^GRND_/ || $2 ~ /^RND/ || $2 ~ /^KEY_(SPEC|REQKEY_DEFL)_/ || $2 ~ /^KEYCTL_/ || $2 ~ /^PERF_/ || $2 ~ /^SECCOMP_MODE_/ || $2 ~ /^SPLICE_/ || $2 ~ /^SYNC_FILE_RANGE_/ || $2 !~ /^AUDIT_RECORD_MAGIC/ && $2 !~ /IOC_MAGIC/ && $2 ~ /^[A-Z][A-Z0-9_]+_MAGIC2?$/ || $2 ~ /^(VM|VMADDR)_/ || $2 ~ /^IOCTL_VM_SOCKETS_/ || $2 ~ /^(TASKSTATS|TS)_/ || $2 ~ /^CGROUPSTATS_/ || $2 ~ /^GENL_/ || $2 ~ /^STATX_/ || $2 ~ /^RENAME/ || $2 ~ /^UBI_IOC[A-Z]/ || $2 ~ /^UTIME_/ || $2 ~ /^XATTR_(CREATE|REPLACE|NO(DEFAULT|FOLLOW|SECURITY)|SHOWCOMPRESSION)/ || $2 ~ /^ATTR_(BIT_MAP_COUNT|(CMN|VOL|FILE)_)/ || $2 ~ /^FSOPT_/ || $2 ~ /^WDIO[CFS]_/ || $2 ~ /^NFN/ || $2 ~ /^XDP_/ || $2 ~ /^RWF_/ || $2 ~ /^(HDIO|WIN|SMART)_/ || $2 ~ /^CRYPTO_/ || $2 ~ /^TIPC_/ || $2 ~ /^DEVLINK_/ || $2 !~ "WMESGLEN" && $2 ~ /^W[A-Z0-9]+$/ || $2 ~/^PPPIOC/ || $2 ~ /^FAN_|FANOTIFY_/ || $2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)} $2 ~ /^__WCOREFLAG$/ {next} $2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)} {next} ' | sort echo ')' ) >_const.go # Pull out the error names for later. errors=$( echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags | awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' | sort ) # Pull out the signal names for later. signals=$( echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags | awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' | egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' | sort ) # Again, writing regexps to a file. echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags | awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' | sort >_error.grep echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags | awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' | egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' | sort >_signal.grep echo '// mkerrors.sh' "$@" echo '// Code generated by the command above; see README.md. DO NOT EDIT.' echo echo "// +build ${GOARCH},${GOOS}" echo go tool cgo -godefs -- "$@" _const.go >_error.out cat _error.out | grep -vf _error.grep | grep -vf _signal.grep echo echo '// Errors' echo 'const (' cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= syscall.Errno(\1)/' echo ')' echo echo '// Signals' echo 'const (' cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= syscall.Signal(\1)/' echo ')' # Run C program to print error and syscall strings. ( echo -E " #include <stdio.h> #include <stdlib.h> #include <errno.h> #include <ctype.h> #include <string.h> #include <signal.h> #define nelem(x) (sizeof(x)/sizeof((x)[0])) enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below struct tuple { int num; const char *name; }; struct tuple errors[] = { " for i in $errors do echo -E ' {'$i', "'$i'" },' done echo -E " }; struct tuple signals[] = { " for i in $signals do echo -E ' {'$i', "'$i'" },' done # Use -E because on some systems bash builtin interprets \n itself. echo -E ' }; static int tuplecmp(const void *a, const void *b) { return ((struct tuple *)a)->num - ((struct tuple *)b)->num; } int main(void) { int i, e; char buf[1024], *p; printf("\n\n// Error table\n"); printf("var errorList = [...]struct {\n"); printf("\tnum syscall.Errno\n"); printf("\tname string\n"); printf("\tdesc string\n"); printf("} {\n"); qsort(errors, nelem(errors), sizeof errors[0], tuplecmp); for(i=0; i<nelem(errors); i++) { e = errors[i].num; if(i > 0 && errors[i-1].num == 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\", \"%s\" },\n", e, errors[i].name, buf); } printf("}\n\n"); printf("\n\n// Signal table\n"); printf("var signalList = [...]struct {\n"); printf("\tnum syscall.Signal\n"); printf("\tname string\n"); printf("\tdesc string\n"); printf("} {\n"); qsort(signals, nelem(signals), sizeof signals[0], tuplecmp); for(i=0; i<nelem(signals); i++) { e = signals[i].num; if(i > 0 && signals[i-1].num == e) continue; strcpy(buf, strsignal(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; // cut trailing : number. p = strrchr(buf, ":"[0]); if(p) *p = '\0'; printf("\t{ %d, \"%s\", \"%s\" },\n", e, signals[i].name, buf); } printf("}\n\n"); return 0; } ' ) >_errors.c $CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out