I am trying to address this issue https://github.com/golang/go/issues/45886, which involves new system calls.
I added the corresponding //sys comments in syscall_linux_*.go, but I am unable to generate them; some errors keep occurring. I'm wondering if it might be an issue with the kernel of the Linux distribution I'm using? This is how I execute it. export GOOS=linux export GOARCH=arm64 ./mkall.sh Of course, even if I haven't made any changes to any files, running ./mkall.sh still results in some strange issues. I have made the following attempts. I did not make any adjustments and only used the code from the Go master branch. When executing ./mkall.sh, the following error occurs. ./mkall.sh # syscall ./zsyscall_linux_arm64.go:1117:22: undefined: SYS_FSTAT ./zsyscall_linux_arm64.go:1132:23: undefined: SYS_FSTATAT ./zsyscall_linux_arm64.go:1248:23: undefined: SYS_RENAMEAT ./zsyscall_linux_arm64.go:1336:23: undefined: SYS_SYNC_FILE_RANGE2 uname -a Linux lima-default 5.4.0-216-generic #236-Ubuntu SMP Fri Apr 11 19:55:34 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux // /usr/include/asm-generic/unistd.h .... #define __NR_readlinkat 78 __SYSCALL(__NR_readlinkat, sys_readlinkat) #if defined(__ARCH_WANT_NEW_STAT) || defined(__ARCH_WANT_STAT64) #define __NR3264_fstatat 79 __SC_3264(__NR3264_fstatat, sys_fstatat64, sys_newfstatat) #define __NR3264_fstat 80 __SC_3264(__NR3264_fstat, sys_fstat64, sys_newfstat) #endif .... The reason is that __ARCH_WANT_NEW_STAT or __ARCH_WANT_STAT64 were not defined. In mksysnum_linux.pl, gcc -E -dD was used to export all definitions, but __NR3264_fstatat and __NR3264_fstat were not included. Finally, I found a similar file at /usr/include/aarch64-linux-gnu/asm/unistd.h. Running gcc -E -dD /usr/include/aarch64-linux-gnu/asm/unistd.h correctly exports __NR3264_fstatat and __NR3264_fstat. However, SYS_SYNC_FILE_RANGE2 is not present. So, could it be that there is an issue with the distribution I am using? I would like to know how others handle generating the corresponding files when developing system calls. I couldn't find any related documentation in src/syscall. <https://github.com/golang/go/tree/master/src/syscall> 在2025年8月27日星期三 UTC+8 14:26:34<Kurtis Rader> 写道： > Insufficient information. Can you provide a link to your proposed change > as well as an explanation for the change? Is there an open issue that > provides background information for what you are attempting? > > On Tue, Aug 26, 2025 at 11:09 PM [email protected] <[email protected]> > wrote: > >> Hello, >> >> I am attempting to generate new system calls for Golang's syscall package. >> While running ./mkall.sh on Ubuntu 20.04.6 LTS AARCH64, I consistently >> encounter the following error: >> plaintext >> ./zsyscall_linux_arm64.go:1336:23: undefined: SYS_SYNC_FILE_RANGE2 go >> tool cgo: signal: broken pipe >> >> This issue suggests that SYS_SYNC_FILE_RANGE2 is not defined in the >> context of the build. Could someone advise which Linux distribution (and >> version) is recommended for successfully generating system calls for >> AARCH64? >> >> Thank you in advance for your guidance! >> >> >> >> Linux lima-default 5.4.0-216-generic #236-Ubuntu SMP Fri Apr 11 19:55:34 >> UTC 2025 aarch64 aarch64 aarch64 GNU/Linux >> >> >> AR='ar' >> CC='gcc' >> CGO_CFLAGS='-O2 -g' >> CGO_CPPFLAGS='' >> CGO_CXXFLAGS='-O2 -g' >> CGO_ENABLED='1' >> CGO_FFLAGS='-O2 -g' >> CGO_LDFLAGS='-O2 -g' >> CXX='g++' >> GCCGO='gccgo' >> GO111MODULE='' >> GOARCH='arm64' >> GOARM64='v8.0' >> GOAUTH='netrc' >> GOBIN='' >> GOCACHE='/home/dingli.linux/.cache/go-build' >> GOCACHEPROG='' >> GODEBUG='' >> GOENV='/home/dingli.linux/.config/go/env' >> GOEXE='' >> GOEXPERIMENT='' >> GOFIPS140='off' >> GOFLAGS='' >> GOGCCFLAGS='-fPIC -pthread -Wl,--no-gc-sections -fmessage-length=0 >> -ffile-prefix-map=/tmp/go-build1072417917=/tmp/go-build >> -gno-record-gcc-switches' >> GOHOSTARCH='arm64' >> GOHOSTOS='linux' >> GOINSECURE='' >> GOMOD='/home/dingli.linux/work/go/src/go.mod' >> GOMODCACHE='/home/dingli.linux/go/pkg/mod' >> GONOPROXY='' >> GONOSUMDB='' >> GOOS='linux' >> GOPATH='/home/dingli.linux/go' >> GOPRIVATE='' >> GOPROXY='https://proxy.golang.org,direct' >> GOROOT='/home/dingli.linux/work/go' >> GOSUMDB='sum.golang.org' >> GOTELEMETRY='local' >> GOTELEMETRYDIR='/home/dingli.linux/.config/go/telemetry' >> GOTMPDIR='' >> GOTOOLCHAIN='auto' >> GOTOOLDIR='/home/dingli.linux/work/go/pkg/tool/linux_arm64' >> GOVCS='' >> GOVERSION='go1.26-devel_77f911e31c Fri Aug 15 18:10:28 2025 -0700' >> GOWORK='' >> PKG_CONFIG='pkg-config' >> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion visit >> https://groups.google.com/d/msgid/golang-nuts/4bdaf596-06b2-431f-b7aa-9f6c18ce97d0n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/golang-nuts/4bdaf596-06b2-431f-b7aa-9f6c18ce97d0n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Kurtis Rader > Caretaker of the exceptional canines Junior and Hank > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/golang-nuts/b2c2a054-6246-4f85-abf2-1c1830d11837n%40googlegroups.com.
