| 1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
| 2 | /* |
| 3 | * QEMU internal errno values for implementing user-only POSIX. |
| 4 | * |
| 5 | * Copyright (c) 2021 Linaro, Ltd. |
| 6 | */ |
| 7 | |
| 8 | #ifndef SPECIAL_ERRNO_H |
| 9 | #define SPECIAL_ERRNO_H |
| 10 | |
| 11 | /* |
| 12 | * All of these are QEMU internal, not visible to the guest. |
| 13 | * They should be chosen so as to not overlap with any host |
| 14 | * or guest errno. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * This is returned when a system call should be restarted, to tell the |
| 19 | * main loop that it should wind the guest PC backwards so it will |
| 20 | * re-execute the syscall after handling any pending signals. |
| 21 | */ |
| 22 | #define QEMU_ERESTARTSYS 255 |
| 23 | |
| 24 | #endif /* SPECIAL_ERRNO_H */ |