internal override StorageSecurity GetSecurity(string absolutePath)
{
if (0 != Syscall.stat(absolutePath, out var stat))
{
throw new LinuxIOException(Syscall.GetLastError());
}
var uid = stat.st_uid;
var uname = LinuxHelpers.GetUserName(uid);
var gid = stat.st_gid;
var gname = LinuxHelpers.GetGroupName(gid);
var publicPermissions = LinuxHelpers.GetOtherPermissions(stat.st_mode);
var userPermissions = LinuxHelpers.GetOwnerPermissions(stat.st_mode);
var groupPermissions = LinuxHelpers.GetGroupPermissions(stat.st_mode);
var builder = ImmutableDictionary.CreateBuilder <StorageActor, StoragePermissions>();
builder.Add(StorageActor.Public, publicPermissions);
builder.Add(StorageActor.User(uname), userPermissions);
builder.Add(StorageActor.Group(gname), groupPermissions);
return(new StorageSecurity(builder.ToImmutable()));
}
internal override void SetSecurity(string absolutePath, IStorageSecurity security)
{
if (0 != Syscall.stat(absolutePath, out var stat))
{
throw new LinuxIOException(Syscall.GetLastError());
}
var uid = stat.st_uid;
var uname = LinuxHelpers.GetUserName(uid);
var gid = stat.st_gid;
var gname = LinuxHelpers.GetGroupName(gid);
var ps = default(FilePermissions);
// FIXME: emit warnings
foreach (var kv in security)
{
var actor = kv.Key;
var sp = kv.Value;
switch (actor.ActorType)
{
case StorageActorType.Public:
ps |= LinuxHelpers.FromOtherPermissions(sp);
break;
case StorageActorType.User when actor.Id == uname:
ps |= LinuxHelpers.FromOwnerPermissions(sp);
break;
case StorageActorType.Group when actor.Id == gname:
ps |= LinuxHelpers.FromGroupPermissions(sp);
break;
default:
// warn
break;
}
}
if (0 != Syscall.chmod(absolutePath, ps))
{
throw new LinuxIOException(Syscall.GetLastError());
}
}
