| 1 | //===-- Linux implementation of lseek -------------------------------------===// |
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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/unistd/lseek.h" |
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| 10 | #include "src/__support/libc_errno.h" |
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| 11 | #include "src/__support/macros/config.h" |
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| 12 | |
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| 13 | #include "src/__support/File/linux/lseekImpl.h" |
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| 14 | #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
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| 15 | #include "src/__support/common.h" |
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| 16 | |
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| 17 | #include "hdr/types/off_t.h" |
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| 18 | #include <sys/syscall.h> // For syscall numbers. |
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| 19 | |
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| 20 | namespace LIBC_NAMESPACE_DECL { |
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| 21 | |
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| 22 | LLVM_LIBC_FUNCTION(off_t, lseek, (int fd, off_t offset, int whence)) { |
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| 23 | auto result = internal::lseekimpl(fd, offset, whence); |
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| 24 | if (!result.has_value()) { |
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| 25 | libc_errno = result.error(); |
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| 26 | return -1; |
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| 27 | } |
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| 28 | return result.value(); |
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| 29 | } |
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| 30 | |
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| 31 | } // namespace LIBC_NAMESPACE_DECL |
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| 32 | |
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