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5840c75c | 1 | /* write with error checking and retries. |
581c785b | 2 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
5840c75c FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
5840c75c FW |
18 | |
19 | #include <support/xunistd.h> | |
20 | ||
21 | #include <support/check.h> | |
22 | ||
23 | void | |
24 | xwrite (int fd, const void *buffer, size_t length) | |
25 | { | |
26 | const char *p = buffer; | |
27 | const char *end = p + length; | |
28 | while (p < end) | |
29 | { | |
30 | ssize_t ret = write (fd, p, end - p); | |
31 | if (ret < 0) | |
8e2c31b5 | 32 | FAIL_EXIT1 ("write of %zu bytes failed after %td: %m", |
5840c75c FW |
33 | length, p - (const char *) buffer); |
34 | if (ret == 0) | |
8e2c31b5 | 35 | FAIL_EXIT1 ("write return 0 after writing %td bytes of %zu", |
5840c75c FW |
36 | p - (const char *) buffer, length); |
37 | p += ret; | |
38 | } | |
39 | } |