| 1 | //===-- Linux implementation of remove ------------------------------------===// |
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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/remove.h" |
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| 10 | |
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| 11 | #include "src/__support/OSUtil/syscall.h" // For internal syscall function. |
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| 12 | #include "src/__support/common.h" |
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| 13 | |
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| 14 | #include "src/errno/libc_errno.h" |
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| 15 | #include <fcntl.h> // For AT_* macros. |
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| 16 | #include <sys/syscall.h> // For syscall numbers. |
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| 17 | |
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| 18 | namespace LIBC_NAMESPACE { |
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| 19 | |
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| 20 | LLVM_LIBC_FUNCTION(int, remove, (const char *path)) { |
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| 21 | // We first try unlinking it as a file. If it is ia file, it will succeed. If |
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| 22 | // it fails with EISDIR, we will try unlinking it as a directory. |
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| 23 | int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_unlinkat, AT_FDCWD, ts: path, ts: 0); |
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| 24 | if (ret == -EISDIR) |
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| 25 | ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_unlinkat, AT_FDCWD, ts: path, |
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| 26 | AT_REMOVEDIR); |
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| 27 | if (ret >= 0) |
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| 28 | return 0; |
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| 29 | libc_errno = -ret; |
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| 30 | return -1; |
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| 31 | } |
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| 32 | |
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| 33 | } // namespace LIBC_NAMESPACE |
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| 34 | |
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