update

core/metrics/insights_linux.go

@@ -0,0 +1,102 @@
+package metrics
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"syscall"
+)
+
+func getOSVersion() (string, string) {
+	file, err := os.Open("/etc/os-release")
+	if err != nil {
+		return "", ""
+	}
+	defer file.Close()
+
+	osRelease, err := io.ReadAll(file)
+	if err != nil {
+		return "", ""
+	}
+
+	lines := strings.Split(string(osRelease), "\n")
+	version := ""
+	distro := ""
+	for _, line := range lines {
+		if strings.HasPrefix(line, "VERSION_ID=") {
+			version = strings.ReplaceAll(strings.TrimPrefix(line, "VERSION_ID="), "\"", "")
+		}
+		if strings.HasPrefix(line, "ID=") {
+			distro = strings.ReplaceAll(strings.TrimPrefix(line, "ID="), "\"", "")
+		}
+	}
+	return version, distro
+}
+
+// MountInfo represents an entry from /proc/self/mountinfo
+type MountInfo struct {
+	MountPoint string
+	FSType     string
+}
+
+var fsTypeMap = map[int64]string{
+	0x5346414f: "afs",
+	0x187:      "autofs",
+	0x61756673: "aufs",
+	0x9123683E: "btrfs",
+	0xc36400:   "ceph",
+	0xff534d42: "cifs",
+	0x28cd3d45: "cramfs",
+	0x64626720: "debugfs",
+	0xf15f:     "ecryptfs",
+	0x2011bab0: "exfat",
+	0x0000EF53: "ext2/ext3/ext4",
+	0xf2f52010: "f2fs",
+	0x6a656a63: "fakeowner", // FS inside a container
+	0x65735546: "fuse",
+	0x4244:     "hfs",
+	0x482b:     "hfs+",
+	0x9660:     "iso9660",
+	0x3153464a: "jfs",
+	0x00006969: "nfs",
+	0x5346544e: "ntfs", // NTFS_SB_MAGIC
+	0x7366746e: "ntfs",
+	0x794c7630: "overlayfs",
+	0x9fa0:     "proc",
+	0x517b:     "smb",
+	0xfe534d42: "smb2",
+	0x73717368: "squashfs",
+	0x62656572: "sysfs",
+	0x01021994: "tmpfs",
+	0x01021997: "v9fs",
+	0x786f4256: "vboxsf",
+	0x4d44:     "vfat",
+	0xca451a4e: "virtiofs",
+	0x58465342: "xfs",
+	0x2FC12FC1: "zfs",
+	0x7c7c6673: "prlfs", // Parallels Shared Folders
+
+	// Signed/unsigned conversion issues (negative hex values converted to uint32)
+	-0x6edc97c2: "btrfs", // 0x9123683e
+	-0x1acb2be:  "smb2",  // 0xfe534d42
+	-0xacb2be:   "cifs",  // 0xff534d42
+	-0xd0adff0:  "f2fs",  // 0xf2f52010
+}
+
+func getFilesystemType(path string) (string, error) {
+	var fsStat syscall.Statfs_t
+	err := syscall.Statfs(path, &fsStat)
+	if err != nil {
+		return "", err
+	}
+
+	fsType := fsStat.Type
+
+	fsName, exists := fsTypeMap[int64(fsType)] //nolint:unconvert
+	if !exists {
+		fsName = fmt.Sprintf("unknown(0x%x)", fsType)
+	}
+
+	return fsName, nil
+}