1*dc2b01b3SSiva Chandra Reddy //===-- Linux implementation of fsync -------------------------------------===//
2*dc2b01b3SSiva Chandra Reddy //
3*dc2b01b3SSiva Chandra Reddy // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*dc2b01b3SSiva Chandra Reddy // See https://llvm.org/LICENSE.txt for license information.
5*dc2b01b3SSiva Chandra Reddy // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*dc2b01b3SSiva Chandra Reddy //
7*dc2b01b3SSiva Chandra Reddy //===----------------------------------------------------------------------===//
8*dc2b01b3SSiva Chandra Reddy 
9*dc2b01b3SSiva Chandra Reddy #include "src/unistd/fsync.h"
10*dc2b01b3SSiva Chandra Reddy 
11*dc2b01b3SSiva Chandra Reddy #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
12*dc2b01b3SSiva Chandra Reddy #include "src/__support/common.h"
13*dc2b01b3SSiva Chandra Reddy 
14*dc2b01b3SSiva Chandra Reddy #include <errno.h>
15*dc2b01b3SSiva Chandra Reddy #include <sys/syscall.h> // For syscall numbers.
16*dc2b01b3SSiva Chandra Reddy 
17*dc2b01b3SSiva Chandra Reddy namespace __llvm_libc {
18*dc2b01b3SSiva Chandra Reddy 
19*dc2b01b3SSiva Chandra Reddy LLVM_LIBC_FUNCTION(int, fsync, (int fd)) {
20*dc2b01b3SSiva Chandra Reddy   long ret = __llvm_libc::syscall(SYS_fsync, fd);
21*dc2b01b3SSiva Chandra Reddy   if (ret < 0) {
22*dc2b01b3SSiva Chandra Reddy     errno = -ret;
23*dc2b01b3SSiva Chandra Reddy     return -1;
24*dc2b01b3SSiva Chandra Reddy   }
25*dc2b01b3SSiva Chandra Reddy   return ret;
26*dc2b01b3SSiva Chandra Reddy }
27*dc2b01b3SSiva Chandra Reddy 
28*dc2b01b3SSiva Chandra Reddy } // namespace __llvm_libc
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