| 1 | //===-- Implementation of setbuf ------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/stdio/setbuf.h" |
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| 10 | #include "hdr/stdio_macros.h" |
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| 11 | #include "src/__support/File/file.h" |
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| 12 | #include "src/__support/libc_errno.h" |
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| 13 | #include "src/__support/macros/config.h" |
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| 14 | |
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| 15 | namespace LIBC_NAMESPACE_DECL { |
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| 16 | |
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| 17 | LLVM_LIBC_FUNCTION(void, setbuf, |
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| 18 | (::FILE *__restrict stream, char *__restrict buf)) { |
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| 19 | int mode = _IOFBF; |
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| 20 | if (buf == nullptr) |
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| 21 | mode = _IONBF; |
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| 22 | int err = reinterpret_cast<LIBC_NAMESPACE::File *>(stream)->set_buffer( |
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| 23 | buf, BUFSIZ, mode); |
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| 24 | if (err != 0) |
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| 25 | libc_errno = err; |
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| 26 | } |
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| 27 | |
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| 28 | } // namespace LIBC_NAMESPACE_DECL |
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| 29 | |
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