viye/internal/osutil/osutil_linux.go (view raw)
| 1 | //go:build linux |
| 2 | |
| 3 | package osutil |
| 4 | |
| 5 | import ( |
| 6 | "fmt" |
| 7 | "os" |
| 8 | "os/exec" |
| 9 | "runtime" |
| 10 | "strconv" |
| 11 | "strings" |
| 12 | "syscall" |
| 13 | "time" |
| 14 | ) |
| 15 | |
| 16 | func Open(path string) error { |
| 17 | cmd := exec.Command("xdg-open", path) |
| 18 | cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true} |
| 19 | cmd.Start() |
| 20 | return nil |
| 21 | } |
| 22 | |
| 23 | func GetKernel() (string, error) { |
| 24 | // or read from: /proc/sys/kernel/osrelease |
| 25 | k, err := exec.Command("uname", "-r").Output() |
| 26 | if err != nil { |
| 27 | return "?", nil |
| 28 | } |
| 29 | return strings.TrimSpace(string(k)), nil |
| 30 | } |
| 31 | |
| 32 | func GetMemory() (string, error) { |
| 33 | f, err := os.ReadFile("/proc/meminfo") |
| 34 | if err != nil { |
| 35 | return "", err |
| 36 | } |
| 37 | var totalKB, availKB int64 |
| 38 | for line := range strings.SplitSeq(string(f), "\n") { |
| 39 | switch { |
| 40 | case strings.HasPrefix(line, "MemTotal:"): |
| 41 | p := strings.Fields(line) |
| 42 | if len(p) >= 2 { |
| 43 | totalKB, _ = strconv.ParseInt(p[1], 10, 64) |
| 44 | } |
| 45 | case strings.HasPrefix(line, "MemAvailable:"): |
| 46 | lp := strings.Fields(line) |
| 47 | if len(lp) >= 2 { |
| 48 | availKB, _ = strconv.ParseInt(lp[1], 10, 64) |
| 49 | } |
| 50 | } |
| 51 | } |
| 52 | if totalKB == 0 { |
| 53 | return "", fmt.Errorf("no MemTotal in /proc/meminfo") |
| 54 | } |
| 55 | used := float64(totalKB-availKB) / (1024 * 1024) |
| 56 | total := float64(totalKB) / (1024 * 1024) |
| 57 | return fmt.Sprintf("%.1f/%.1f GiB", used, total), nil |
| 58 | } |
| 59 | |
| 60 | func GetCPU() (string, error) { |
| 61 | f, err := os.ReadFile("/proc/cpuinfo") |
| 62 | if err != nil { |
| 63 | return "", err |
| 64 | } |
| 65 | for line := range strings.SplitSeq(string(f), "\n") { |
| 66 | if !strings.HasPrefix(line, "model name") { |
| 67 | continue |
| 68 | } |
| 69 | _, after, ok := strings.Cut(line, ":") |
| 70 | if !ok { |
| 71 | continue |
| 72 | } |
| 73 | return fmt.Sprintf("%s (%d)", strings.TrimSpace(after), runtime.NumCPU()), nil |
| 74 | } |
| 75 | return "", fmt.Errorf("no model name in /proc/cpuinfo") |
| 76 | } |
| 77 | |
| 78 | func GetUptime() (string, error) { |
| 79 | f, err := os.ReadFile("/proc/uptime") |
| 80 | if err != nil { |
| 81 | return "", err |
| 82 | } |
| 83 | p := strings.Fields(string(f)) |
| 84 | if len(p) == 0 { |
| 85 | return "", fmt.Errorf("empty /proc/uptime") |
| 86 | } |
| 87 | s, err := strconv.ParseFloat(p[0], 64) |
| 88 | if err != nil { |
| 89 | return "", err |
| 90 | } |
| 91 | |
| 92 | d := time.Duration(s) * time.Second |
| 93 | days := int(d.Hours()) / 24 |
| 94 | hours := int(d.Hours()) % 24 |
| 95 | mins := int(d.Minutes()) % 60 |
| 96 | |
| 97 | switch { |
| 98 | case days > 0: |
| 99 | return fmt.Sprintf("%dd %dh", days, hours), nil |
| 100 | case hours > 0: |
| 101 | return fmt.Sprintf("%dh %dm", hours, mins), nil |
| 102 | default: |
| 103 | return fmt.Sprintf("%dm", mins), nil |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | func GetOS() (string, error) { |
| 108 | f, err := os.ReadFile("/etc/os-release") |
| 109 | if err != nil { |
| 110 | return "", err |
| 111 | } |
| 112 | for line := range strings.SplitSeq(string(f), "\n") { |
| 113 | if strings.HasPrefix(line, "PRETTY_NAME=") { |
| 114 | p := strings.Split(line, "=") |
| 115 | if len(p) != 2 { |
| 116 | return "Linux", err |
| 117 | } |
| 118 | return strings.Trim(p[1], `" `), nil |
| 119 | } |
| 120 | } |
| 121 | return "Linux", nil |
| 122 | } |