github.com/zcalusic/sysinfo

Better ARM support: CPU vendor and model, and the OS architecture on every platform.

Fixes

• ARM CPUs get a vendor and model. ARM kernels show no vendor_id and arm64 kernels no model name, so both were empty; they're now mapped from the CPU implementer and part numbers, as lscpu does. A big.LITTLE chip lists each core type, e.g. Cortex-A55/Cortex-A76 (Moses Narrow, #28).
• kernel.architecture is set on arm64, armhf, riscv64 and other architectures, and on musl distributions such as Alpine. Only the glibc amd64 and i386 loaders were recognized; the architecture now comes from the ELF header of /bin/sh. Names follow Debian's (amd64, arm64, armhf, ...).

Build and testing

• The SMBIOS parser has tests: synthetic tables for DIMM sizes, the type 19 fallback, short records and truncated tables, a real table from a QEMU virtual machine, and a fuzz test.

Full Changelog: v1.2.0...v1.2.1

A larger release: a newer Go, a removable flag for storage, DDR5 memory types, TinyGo support, and fixes for memory corruption in network detection, malformed SMBIOS tables and 32-bit disk sizes. sysinfo also never writes machine ID files any more.

Upgrade notes

• Requires Go 1.27.
• sysinfo never writes machine ID files. It used to copy /etc/machine-id and /var/lib/dbus/machine-id over each other when one was missing or they differed. That filled an intentionally empty /etc/machine-id (image templates, systemd first boot), wrote into containers, and during systemd's first boot replaced a valid D-Bus machine ID with "uninitialized". It now reads the systemd machine ID, falls back to the D-Bus one, ignores "uninitialized", and changes nothing.
• cpu.threads counts all online CPUs, from /proc/cpuinfo. It came from runtime.NumCPU(), which counts only the CPUs the process may run on, so it was too low under taskset or a cpuset.
• storage[].removable is new and always present, false included (Bipin B Narayan).

New

• Memory types DDR5, LPDDR5 and HBM3, from the current SMBIOS specification (apocelipes).
• The cpuid package builds with TinyGo (Moses Narrow).

Fixes

• Network detection let the kernel write past the end of a Go struct: the SIOCETHTOOL ioctl copies back the whole struct ifreq, which the Go side declared too short.
• A truncated SMBIOS table, or a record shorter than the fields read from it, could crash the parser or make it read the next record's bytes.
• Disks of 2 TiB and larger got a wrong size on 32-bit systems.
• AlmaLinux and Rocky Linux kept an empty version when their release file was missing; it now comes from os-release.
• Read errors in /etc/os-release, /etc/sysconfig/clock and the udev database are no longer ignored.

Documentation

• The README has fresh sample output, installs the demo with go install, and links pkg.go.dev.

Build and testing

• CI is back on GitHub Actions: builds for amd64, 386 and arm64, go vet, tests, golangci-lint (with a configuration in the repo) and govulncheck.

Full Changelog: v1.1.3...v1.2.0

Product information on systems without DMI, such as many ARM boards.

New

• When DMI has no product name or serial number, they're read from the device tree (/proc/device-tree/model and serial-number), e.g. on a Raspberry Pi (Edouard Vanbelle).

Full Changelog: v1.1.2...v1.1.3

AlmaLinux release detection.

Fixes

• The AlmaLinux release and version come from /etc/almalinux-release (Istiak Ferdous).

Full Changelog: v1.1.1...v1.1.2

Rocky Linux release detection.

Fixes

• The Rocky Linux release and version come from /etc/rocky-release; before, the version came out wrong (Henri Devigne).

Full Changelog: v1.1.0...v1.1.1

CPU topology is reported in virtual machines too.

Upgrade notes

• CPU counts are reported under hypervisors. sysinfo used to skip the number of CPUs and cores when it detected a hypervisor, since a virtual machine's topology may not match the hardware. It now reports what the system shows, as KVM can pass a topology to the guest (#37). Code that relied on these fields being empty in VMs needs to handle them.

Build and testing

• The deprecated io/ioutil package is no longer used.

Full Changelog: v1.0.3...v1.1.0

sysinfo no longer creates a machine ID when the system has none.

Upgrade notes

• Requires Go 1.22.
• A missing machine ID stays missing. sysinfo used to generate one and write it to /etc/machine-id and /var/lib/dbus/machine-id. A system without a machine ID is valid (containers, first boot, immutable images), and an inventory library shouldn't write files without telling anyone. node.machineid is now empty there (Itxaka).

Build and testing

• Dependencies are updated. The GitHub Actions workflow is removed, since it no longer worked.

Full Changelog: v1.0.2...v1.0.3

Product information gains the SKU and the system UUID.

Upgrade notes

• Requires Go 1.21.
• sysinfo now depends on github.com/google/uuid.

New

• product.sku and product.uuid, from the DMI data (Bipin B Narayan).

Full Changelog: v1.0.1...v1.0.2

A CentOS release detection fix.

Fixes

• The CentOS release version is found when nothing follows it in /etc/centos-release (Jean-Francois Levesque).

Full Changelog: v1.0.0...v1.0.1

This project publishes no release notes. Between v0.9.5 and v1.0.0 there were 9 commits, 9 of them substantive:

• Handle case when /etc/localtime is a relative symlink
• support building on darwin
• test on github ci
• Update badges
• Go 1.19
• Update GitHub workflow badge URL
• Update GitHub workflow
• Go 1.20
• Version 1.0.0

This project publishes no release notes. Between v0.9.4 and v0.9.5 there were 7 commits, 7 of them substantive:

• Remove .travis.yml
• Go 1.17
• Don't use underscores in Go names
• Simplify memory detection, assume DMI table is available
• Update README.md
• Simplify OS detection, RedHat 6 & CentOS 6 no longer supported
• Version 0.9.5