| 1 | //===-- Implementation of open --------------------------------------------===// |
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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/fcntl/open.h" |
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| 10 | |
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| 11 | #include "hdr/fcntl_macros.h" |
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| 12 | #include "hdr/types/mode_t.h" |
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| 13 | #include "src/__support/OSUtil/fcntl.h" |
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| 14 | #include "src/__support/common.h" |
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| 15 | #include "src/__support/libc_errno.h" |
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| 16 | #include "src/__support/macros/config.h" |
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| 17 | #include <stdarg.h> |
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| 18 | |
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| 19 | namespace LIBC_NAMESPACE_DECL { |
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| 20 | |
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| 21 | LLVM_LIBC_FUNCTION(int, open, (const char *path, int flags, ...)) { |
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| 22 | mode_t mode_flags = 0; |
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| 23 | // O_TMPFILE is a multi-bit flag so we test all bits by checking for equality |
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| 24 | // with O_TMPFILE |
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| 25 | if ((flags & O_CREAT) || (flags & O_TMPFILE) == O_TMPFILE) { |
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| 26 | va_list varargs; |
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| 27 | va_start(varargs, flags); |
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| 28 | mode_flags = va_arg(varargs, mode_t); |
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| 29 | va_end(varargs); |
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| 30 | } |
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| 31 | |
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| 32 | auto result = internal::open(path, flags, mode_flags); |
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| 33 | |
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| 34 | if (!result.has_value()) { |
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| 35 | libc_errno = result.error(); |
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| 36 | return -1; |
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| 37 | } |
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| 38 | return result.value(); |
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| 39 | } |
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| 40 | |
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| 41 | } // namespace LIBC_NAMESPACE_DECL |
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| 42 | |
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