Sample
golang.org/x/sys v0.31.0: unix.EFD_CLOEXEC
Verified sample for golang golang.org/x/sys v0.31.0: unix.EFD_CLOEXEC. The contract ran on go 1.26 · linux alpine/x64 · docker and passed: unix.Eventfd…
sha256:6fc4455dc8d9ee7c83f9ac26cd64a9262e1357962b61d7e64aeaa7b140a458c1
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
linux 24 · ubuntu · glibc 2.39 x64 go
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f… |
2026-08-30 |
Case
HOW- Goal
- verify golang.org/x/sys/unix.EFD_CLOEXEC in pkg:golang/golang.org/x/sys@v0.31.0
- Packages
- Symbols
-
- golang.org/x/sys/unix.EFD_CLOEXEC
- Created
- 2026-08-30T16:14:35Z
Contract
- unix.Eventfd creates a file descriptor with unix.EFD_CLOEXEC flag setting FD_CLOEXEC
- Writing and reading 8-byte uint64 counters transfers data across the eventfd
- unix.Eventfd with EFD_CLOEXEC and EFD_NONBLOCK returns EAGAIN when counter is zero
- unix.Eventfd with EFD_CLOEXEC and EFD_SEMAPHORE decrements counter by 1 on read
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous