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Simplify the FilePermissions into one set of flags

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This commit is contained in:
Ryan Kistner committed 2021-07-16 23:34:13 -06:00
1 parent 08eb74a7cc
commit 7b89e0c1c4
1 file changed
+18 -28
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DepotDownloader/PlatformUtilities.cs
+18 -28
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@@ -5,33 +5,21 @@ namespace DepotDownloader
{
public static class PlatformUtilities
{
[Flags]
private enum FilePermissions : uint
{
S_IXUSR = 0x0040, // Execute by owner
S_IXGRP = 0x0008, // Execute by group
S_IXOTH = 0x0001, // Execute by other
EXECUTE = S_IXGRP | S_IXUSR | S_IXOTH
}
private enum FilePermissionsShort : ushort
{
S_IXUSR = 0x0040, // Execute by owner
S_IXGRP = 0x0008, // Execute by group
S_IXOTH = 0x0001, // Execute by other
EXECUTE = S_IXGRP | S_IXUSR | S_IXOTH
}
private const int ModeExecuteOwner = 0x0040;
private const int ModeExecuteGroup = 0x0008;
private const int ModeExecuteOther = 0x0001;
private const int ModeExecute = ModeExecuteOwner | ModeExecuteGroup | ModeExecuteOther;
[StructLayout(LayoutKind.Explicit, Size = 144)]
private readonly struct StatLinux
{
[FieldOffset(24)] public readonly FilePermissions st_mode;
[FieldOffset(24)] public readonly uint st_mode;
}
[StructLayout(LayoutKind.Explicit, Size = 144)]
private readonly struct StatOSX
{
[FieldOffset(4)] public readonly FilePermissionsShort st_mode;
[FieldOffset(4)] public readonly ushort st_mode;
}
[DllImport("libc", EntryPoint = "__xstat", SetLastError = true)]
@@ -41,10 +29,10 @@ namespace DepotDownloader
private static extern int stat(string path, out StatOSX stat);
[DllImport("libc", SetLastError = true)]
private static extern int chmod(string path, FilePermissions mode);
private static extern int chmod(string path, uint mode);
[DllImport("libc", SetLastError = true)]
private static extern int chmod(string path, FilePermissionsShort mode);
private static extern int chmod(string path, ushort mode);
[DllImport("libc", CallingConvention = CallingConvention.Cdecl, SetLastError = true)]
private static extern IntPtr strerror(int errno);
@@ -64,22 +52,24 @@ namespace DepotDownloader
{
ThrowIf(PlatformUtilities.stat(1, path, out var stat));
if (stat.st_mode.HasFlag(FilePermissions.EXECUTE) != value)
var hasExecuteMask = (stat.st_mode & ModeExecute) == ModeExecute;
if (hasExecuteMask != value)
{
ThrowIf(chmod(path, value
? stat.st_mode | FilePermissions.EXECUTE
: stat.st_mode & ~FilePermissions.EXECUTE));
ThrowIf(chmod(path, (uint)(value
? stat.st_mode | ModeExecute
: stat.st_mode & ~ModeExecute)));
}
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
ThrowIf(PlatformUtilities.stat(path, out var stat));
if (stat.st_mode.HasFlag(FilePermissionsShort.EXECUTE) != value)
var hasExecuteMask = (stat.st_mode & ModeExecute) == ModeExecute;
if (hasExecuteMask != value)
{
ThrowIf(chmod(path, value
? stat.st_mode | FilePermissionsShort.EXECUTE
: stat.st_mode & ~FilePermissionsShort.EXECUTE));
ThrowIf(chmod(path, (ushort)(value
? stat.st_mode | ModeExecute
: stat.st_mode & ~ModeExecute)));
}
}
}