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WIP: Add health endpoint #159
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| //go:build !windows | ||
| // +build !windows | ||
|
|
||
| package repo | ||
|
|
||
| import ( | ||
| "errors" | ||
| "io/fs" | ||
| "syscall" | ||
|
|
||
| "golang.org/x/sys/unix" | ||
| ) | ||
|
|
||
| func isWritable(path string) (bool, error) { | ||
| err := unix.Access(path, unix.W_OK) | ||
| var err2 syscall.Errno | ||
| if errors.As(err, &err2) && err2.Is(fs.ErrPermission) { | ||
| return false, nil | ||
| } | ||
| return err == nil, err | ||
| } | ||
|
|
||
| func getFreeSpace(path string) (uint64, error) { | ||
| var stat unix.Statfs_t | ||
|
|
||
| err := unix.Statfs(path, &stat) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
|
|
||
| // Available blocks * size per block = available space in bytes | ||
| return stat.Bavail * uint64(stat.Bsize), nil | ||
| } | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package repo | ||
|
|
||
| import ( | ||
| "errors" | ||
| "syscall" | ||
| "unsafe" | ||
|
|
||
| "github.com/itchio/ox/syscallex" | ||
| "github.com/itchio/ox/winox" | ||
| "golang.org/x/sys/windows" | ||
| ) | ||
|
|
||
| var ( | ||
| advapi32DLL = syscall.NewLazyDLL("advapi32.dll") | ||
| impersonateSelfProc = advapi32DLL.NewProc("ImpersonateSelf") | ||
|
|
||
| kernel32DLL = syscall.NewLazyDLL("kernel32.dll") | ||
| getDiskFreeSpaceExWProc = kernel32DLL.NewProc("GetDiskFreeSpaceExW") | ||
| ) | ||
|
|
||
| func ImpersonateSelf(impersonationLevel uint64) (bool, error) { | ||
| r1, _, err := impersonateSelfProc.Call( | ||
| uintptr(impersonationLevel), | ||
| ) | ||
| if err != syscall.Errno(0) { | ||
| return false, err | ||
| } | ||
| return syscall.Handle(r1) == 1, nil | ||
| } | ||
|
|
||
| func GetDiskFreeSpaceExW(path string) (int64, error) { | ||
| var freeBytes int64 | ||
|
|
||
| _, _, err := getDiskFreeSpaceExWProc.Call( | ||
| uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(path))), | ||
| uintptr(unsafe.Pointer(&freeBytes)), | ||
| 0, | ||
| 0, | ||
| ) | ||
| if err != syscall.Errno(0) { | ||
| return 0, err | ||
| } | ||
| return freeBytes, nil | ||
| } | ||
|
|
||
| func isWritable(path string) (bool, error) { | ||
| if _, err := ImpersonateSelf(syscallex.SecurityImpersonation); err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| defer func() { | ||
| _ = syscallex.RevertToSelf() | ||
| }() | ||
|
|
||
| var impersonationToken syscall.Token | ||
| currentThread := syscallex.GetCurrentThread() | ||
| err := syscallex.OpenThreadToken( | ||
| currentThread, | ||
| syscall.TOKEN_ALL_ACCESS, | ||
| 1, | ||
| &impersonationToken, | ||
| ) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| return winox.UserHasPermission(impersonationToken, winox.RightsRead|winox.RightsWrite, path) | ||
| } | ||
|
|
||
| func getFreeSpace(path string) (uint64, error) { | ||
| freeBytes, err := GetDiskFreeSpaceExW(path) | ||
| if err == nil && freeBytes < 0 { | ||
| return 0, errors.New("free space can't be negative") | ||
| } | ||
| return uint64(freeBytes), err | ||
| } |
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This check will probably report incorrect usage numbers for btrfs-based filesystems.