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6d7e8eda | 1 | /* Copyright (C) 1991-2023 Free Software Foundation, Inc. |
478b92f0 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
478b92f0 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
478b92f0 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <errno.h> |
19 | #include <unistd.h> | |
20 | #include <stddef.h> | |
21 | ||
22 | /* Read NBYTES into BUF from FD. Return the number read or -1. */ | |
23 | ssize_t | |
c4029823 | 24 | __libc_read (int fd, void *buf, size_t nbytes) |
28f540f4 RM |
25 | { |
26 | if (nbytes == 0) | |
27 | return 0; | |
28 | if (fd < 0) | |
29 | { | |
c4029823 | 30 | __set_errno (EBADF); |
28f540f4 RM |
31 | return -1; |
32 | } | |
33 | if (buf == NULL) | |
34 | { | |
c4029823 | 35 | __set_errno (EINVAL); |
28f540f4 RM |
36 | return -1; |
37 | } | |
38 | ||
c4029823 | 39 | __set_errno (ENOSYS); |
28f540f4 RM |
40 | return -1; |
41 | } | |
37ba7d66 | 42 | libc_hidden_def (__libc_read) |
28f540f4 RM |
43 | stub_warning (read) |
44 | ||
c4029823 | 45 | weak_alias (__libc_read, __read) |
37ba7d66 | 46 | libc_hidden_weak (__read) |
c4029823 | 47 | weak_alias (__libc_read, read) |
1c6d89e9 | 48 | libc_hidden_weak (read) |