| ... | ... | @@ -5418,3 +5418,42 @@ pub fn fdatasync(fd: fd_t) SyncError!void { |
| 5418 | 5418 | else => |err| return std.os.unexpectedErrno(err), |
| 5419 | 5419 | } |
| 5420 | 5420 | } |
| 5421 | |
| 5422 | pub const PrctlError = error{ |
| 5423 | /// Can only occur with PR_SET_SECCOMP/SECCOMP_MODE_FILTER or |
| 5424 | /// PR_SET_MM/PR_SET_MM_EXE_FILE |
| 5425 | AccessDenied, |
| 5426 | /// Can only occur with PR_SET_MM/PR_SET_MM_EXE_FILE |
| 5427 | InvalidFileDescriptor, |
| 5428 | InvalidAddress, |
| 5429 | /// Can only occur with PR_SET_SPECULATION_CTRL, PR_MPX_ENABLE_MANAGEMENT, |
| 5430 | /// or PR_MPX_DISABLE_MANAGEMENT |
| 5431 | UnsupportedFeature, |
| 5432 | /// Can only occur wih PR_SET_FP_MODE |
| 5433 | OperationNotSupported, |
| 5434 | PermissionDenied, |
| 5435 | } || UnexpectedError; |
| 5436 | |
| 5437 | pub fn prctl(option: i32, args: anytype) PrctlError!u31 { |
| 5438 | if (@typeInfo(@TypeOf(args)) != .Struct) |
| 5439 | @compileError("Expected tuple or struct argument, found " ++ @typeName(@TypeOf(args))); |
| 5440 | if (args.len > 4) |
| 5441 | @compileError("prctl takes a maximum of 4 optional arguments"); |
| 5442 | |
| 5443 | var buf: [4]usize = undefined; |
| 5444 | inline for (args) |arg, i| buf[i] = arg; |
| 5445 | |
| 5446 | const rc = system.prctl(option, buf[0], buf[1], buf[2], buf[3]); |
| 5447 | switch (errno(rc)) { |
| 5448 | 0 => return @intCast(u31, rc), |
| 5449 | EACCES => return error.AccessDenied, |
| 5450 | EBADF => return error.InvalidFileDescriptor, |
| 5451 | EFAULT => return error.InvalidAddress, |
| 5452 | EINVAL => unreachable, |
| 5453 | ENODEV, ENXIO => return error.UnsupportedFeature, |
| 5454 | EOPNOTSUPP => return error.OperationNotSupported, |
| 5455 | EPERM, EBUSY => return error.PermissionDenied, |
| 5456 | ERANGE => unreachable, |
| 5457 | else => |err| return std.os.unexpectedErrno(err), |
| 5458 | } |
| 5459 | } |
Isaac Freund <mail@isaacfreund.com> 2020-09-11 14:10:55+02:00
Commit is signed but in an unrecognized format.
lib