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authorLibravatar dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>2023-04-03 11:16:17 +0200
committerLibravatar GitHub <noreply@github.com>2023-04-03 11:16:17 +0200
commit57dc742c76d7876a2457594715a7b5bc2c9a92bd (patch)
tree76be1ec744face5bf4f617d4c9fca084707e4268 /vendor/github.com/cilium/ebpf/internal/version.go
parent[bugfix/frontend] Preload css styles (#1638) (diff)
downloadgotosocial-57dc742c76d7876a2457594715a7b5bc2c9a92bd.tar.xz
[chore]: Bump github.com/KimMachineGun/automemlimit from 0.2.4 to 0.2.5 (#1666)
Bumps [github.com/KimMachineGun/automemlimit](https://github.com/KimMachineGun/automemlimit) from 0.2.4 to 0.2.5. - [Release notes](https://github.com/KimMachineGun/automemlimit/releases) - [Commits](https://github.com/KimMachineGun/automemlimit/compare/v0.2.4...v0.2.5) --- updated-dependencies: - dependency-name: github.com/KimMachineGun/automemlimit dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Diffstat (limited to 'vendor/github.com/cilium/ebpf/internal/version.go')
-rw-r--r--vendor/github.com/cilium/ebpf/internal/version.go122
1 files changed, 122 insertions, 0 deletions
diff --git a/vendor/github.com/cilium/ebpf/internal/version.go b/vendor/github.com/cilium/ebpf/internal/version.go
new file mode 100644
index 000000000..370e01e44
--- /dev/null
+++ b/vendor/github.com/cilium/ebpf/internal/version.go
@@ -0,0 +1,122 @@
+package internal
+
+import (
+ "fmt"
+ "sync"
+
+ "github.com/cilium/ebpf/internal/unix"
+)
+
+const (
+ // Version constant used in ELF binaries indicating that the loader needs to
+ // substitute the eBPF program's version with the value of the kernel's
+ // KERNEL_VERSION compile-time macro. Used for compatibility with BCC, gobpf
+ // and RedSift.
+ MagicKernelVersion = 0xFFFFFFFE
+)
+
+var (
+ kernelVersion = struct {
+ once sync.Once
+ version Version
+ err error
+ }{}
+)
+
+// A Version in the form Major.Minor.Patch.
+type Version [3]uint16
+
+// NewVersion creates a version from a string like "Major.Minor.Patch".
+//
+// Patch is optional.
+func NewVersion(ver string) (Version, error) {
+ var major, minor, patch uint16
+ n, _ := fmt.Sscanf(ver, "%d.%d.%d", &major, &minor, &patch)
+ if n < 2 {
+ return Version{}, fmt.Errorf("invalid version: %s", ver)
+ }
+ return Version{major, minor, patch}, nil
+}
+
+// NewVersionFromCode creates a version from a LINUX_VERSION_CODE.
+func NewVersionFromCode(code uint32) Version {
+ return Version{
+ uint16(uint8(code >> 16)),
+ uint16(uint8(code >> 8)),
+ uint16(uint8(code)),
+ }
+}
+
+func (v Version) String() string {
+ if v[2] == 0 {
+ return fmt.Sprintf("v%d.%d", v[0], v[1])
+ }
+ return fmt.Sprintf("v%d.%d.%d", v[0], v[1], v[2])
+}
+
+// Less returns true if the version is less than another version.
+func (v Version) Less(other Version) bool {
+ for i, a := range v {
+ if a == other[i] {
+ continue
+ }
+ return a < other[i]
+ }
+ return false
+}
+
+// Unspecified returns true if the version is all zero.
+func (v Version) Unspecified() bool {
+ return v[0] == 0 && v[1] == 0 && v[2] == 0
+}
+
+// Kernel implements the kernel's KERNEL_VERSION macro from linux/version.h.
+// It represents the kernel version and patch level as a single value.
+func (v Version) Kernel() uint32 {
+
+ // Kernels 4.4 and 4.9 have their SUBLEVEL clamped to 255 to avoid
+ // overflowing into PATCHLEVEL.
+ // See kernel commit 9b82f13e7ef3 ("kbuild: clamp SUBLEVEL to 255").
+ s := v[2]
+ if s > 255 {
+ s = 255
+ }
+
+ // Truncate members to uint8 to prevent them from spilling over into
+ // each other when overflowing 8 bits.
+ return uint32(uint8(v[0]))<<16 | uint32(uint8(v[1]))<<8 | uint32(uint8(s))
+}
+
+// KernelVersion returns the version of the currently running kernel.
+func KernelVersion() (Version, error) {
+ kernelVersion.once.Do(func() {
+ kernelVersion.version, kernelVersion.err = detectKernelVersion()
+ })
+
+ if kernelVersion.err != nil {
+ return Version{}, kernelVersion.err
+ }
+ return kernelVersion.version, nil
+}
+
+// detectKernelVersion returns the version of the running kernel.
+func detectKernelVersion() (Version, error) {
+ vc, err := vdsoVersion()
+ if err != nil {
+ return Version{}, err
+ }
+ return NewVersionFromCode(vc), nil
+}
+
+// KernelRelease returns the release string of the running kernel.
+// Its format depends on the Linux distribution and corresponds to directory
+// names in /lib/modules by convention. Some examples are 5.15.17-1-lts and
+// 4.19.0-16-amd64.
+func KernelRelease() (string, error) {
+ var uname unix.Utsname
+ if err := unix.Uname(&uname); err != nil {
+ return "", fmt.Errorf("uname failed: %w", err)
+ }
+
+ return unix.ByteSliceToString(uname.Release[:]), nil
+}