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show info about all mounted disks when no path is given
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Daniel Milde
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Dec 27, 2020
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| package main | ||
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| // Device struct | ||
| type Device struct { | ||
| name string | ||
| mountPoint string | ||
| size int64 | ||
| free int64 | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| // +build linux,amd64 | ||
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| package main | ||
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| import ( | ||
| "bufio" | ||
| "log" | ||
| "os" | ||
| "runtime" | ||
| "strings" | ||
| "syscall" | ||
| ) | ||
|
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| // GetDevicesInfo returns usage info about mounted devices (by calling Statfs syscall) | ||
| func GetDevicesInfo() []*Device { | ||
| if runtime.GOOS != "linux" { | ||
| panic("Listing devices is not yet supported on " + runtime.GOOS) | ||
| } | ||
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| devices := []*Device{} | ||
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| file, err := os.Open("/proc/mounts") | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
| defer file.Close() | ||
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| scanner := bufio.NewScanner(file) | ||
| for scanner.Scan() { | ||
| line := scanner.Text() | ||
| if line[0:4] == "/dev" { | ||
| parts := strings.Fields(line) | ||
| info := &syscall.Statfs_t{} | ||
| syscall.Statfs(parts[1], info) | ||
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| device := &Device{ | ||
| name: parts[0], | ||
| mountPoint: parts[1], | ||
| size: info.Bsize * int64(info.Blocks), | ||
| free: info.Bsize * int64(info.Bavail), | ||
| } | ||
| devices = append(devices, device) | ||
| } | ||
| } | ||
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| if err := scanner.Err(); err != nil { | ||
| log.Fatal(err) | ||
| } | ||
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| return devices | ||
| } |
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