Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1 | #ifndef READ_DWORD |
| 2 | #define READ_DWORD |
| 3 | |
| 4 | /* Copyright 2007,2009 Alain Knaff. |
| 5 | * This file is part of mtools. |
| 6 | * |
| 7 | * Mtools is free software: you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * Mtools is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with Mtools. If not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
| 20 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 21 | static Dword read_dword(int handle) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 22 | { |
| 23 | Byte val[4]; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 24 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 25 | if(read(handle, (char *)val, 4) < 4) |
| 26 | return (Dword) -1; |
| 27 | |
| 28 | return byte2dword(val); |
| 29 | } |
| 30 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 31 | UNUSED(static int32_t read_sdword(int handle)) |
| 32 | { |
| 33 | Byte val[4]; |
| 34 | |
| 35 | if(read(handle, (char *)val, 4) < 4) |
| 36 | return (int32_t) -1; |
| 37 | |
| 38 | return byte2sdword(val); |
| 39 | } |
| 40 | |
| 41 | |
| 42 | struct SQwordRet { int64_t v; int err; }; |
| 43 | UNUSED(static struct SQwordRet read_sqword(int handle) ) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 44 | { |
| 45 | Byte val[8]; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 46 | struct SQwordRet ret; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 47 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 48 | if(read(handle, (char *)val, 8) < 8) { |
| 49 | ret.err=-1; |
| 50 | } else { |
| 51 | ret.v = (int64_t) byte2qword(val); |
| 52 | ret.err = 0; |
| 53 | } |
| 54 | return ret; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | #endif |