static StatFileHelper()
{
StatMethod = null;
// Try to load the Mono Posix assembly. If it doesn't exist, we're on Windows.
Assembly MonoPosix;
try
{
MonoPosix = Assembly.Load("Mono.Posix, Version=4.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756");
}
catch (FileNotFoundException)
{
return;
}
Type SyscallType = MonoPosix.GetType("Mono.Unix.Native.Syscall");
if (SyscallType == null)
{
throw new InvalidOperationException("Couldn't find Syscall type");
}
StatMethod = SyscallType.GetMethod("stat");
if (StatMethod == null)
{
throw new InvalidOperationException("Couldn't find Mono.Unix.Native.Syscall.stat method");
}
Type StatType = MonoPosix.GetType("Mono.Unix.Native.Stat");
if (StatType == null)
{
throw new InvalidOperationException("Couldn't find Mono.Unix.Native.Stat type");
}
StatModeField = StatType.GetField("st_mode");
if (StatModeField == null)
{
throw new InvalidOperationException("Couldn't find Mono.Unix.Native.Stat.st_mode field");
}
}
static bool SetExecutablePermissions(string RootDir, IEnumerable <DependencyFile> Files)
{
// Try to load the Mono Posix assembly. If it doesn't exist, we're on Windows.
Assembly MonoPosix;
try
{
MonoPosix = Assembly.Load("Mono.Posix, Version=4.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756");
}
catch (FileNotFoundException)
{
return(true);
}
// Dynamically find all the types and methods for Syscall.stat and Syscall.chmod
Type SyscallType = MonoPosix.GetType("Mono.Unix.Native.Syscall");
if (SyscallType == null)
{
Log.WriteError("Couldn't find Syscall type");
return(false);
}
MethodInfo StatMethod = SyscallType.GetMethod("stat");
if (StatMethod == null)
{
Log.WriteError("Couldn't find Mono.Unix.Native.Syscall.stat method");
return(false);
}
MethodInfo ChmodMethod = SyscallType.GetMethod("chmod");
if (ChmodMethod == null)
{
Log.WriteError("Couldn't find Mono.Unix.Native.Syscall.chmod method");
return(false);
}
Type StatType = MonoPosix.GetType("Mono.Unix.Native.Stat");
if (StatType == null)
{
Log.WriteError("Couldn't find Mono.Unix.Native.Stat type");
return(false);
}
FieldInfo StatModeField = StatType.GetField("st_mode");
if (StatModeField == null)
{
Log.WriteError("Couldn't find Mono.Unix.Native.Stat.st_mode field");
return(false);
}
// Update all the executable permissions
const uint ExecutableBits = (1 << 0) | (1 << 3) | (1 << 6);
foreach (DependencyFile File in Files)
{
if (File.IsExecutable)
{
string FileName = Path.Combine(RootDir, File.Name);
// Call Syscall.stat(Filename, out Stat)
object[] StatArgs = new object[] { FileName, null };
int StatResult = (int)StatMethod.Invoke(null, StatArgs);
if (StatResult != 0)
{
Log.WriteError("Stat() call for {0} failed with error {1}", File.Name, StatResult);
return(false);
}
// Get the current permissions
uint CurrentPermissions = (uint)StatModeField.GetValue(StatArgs[1]);
// The desired permissions should be executable for every read group
uint NewPermissions = CurrentPermissions | ((CurrentPermissions >> 2) & ExecutableBits);
// Update them if they don't match
if (CurrentPermissions != NewPermissions)
{
int ChmodResult = (int)ChmodMethod.Invoke(null, new object[] { FileName, NewPermissions });
if (ChmodResult != 0)
{
Log.WriteError("Chmod() call for {0} failed with error {1}", File.Name, ChmodResult);
return(false);
}
}
}
}
return(true);
}