[Support] On AIX, Check ENOTSUP on posix_fallocate instead of EOPNOTSUPP
Summary:
`posix_fallocate` can fail if the underlying filesystem does not support
it; and, on AIX, such a failure is reported by a return value of
`ENOTSUP`. The existing code checks only for `EOPNOTSUPP`, which may
share the same value as `ENOTSUP`, but is not required to.
Reviewers: xingxue, sfertile, jasonliu
Reviewed By: xingxue
Subscribers: kristina, jsji, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D60175
llvm-svn: 357662
diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc
index a02585c..05ccc6c 100644
--- a/llvm/lib/Support/Unix/Path.inc
+++ b/llvm/lib/Support/Unix/Path.inc
@@ -492,7 +492,12 @@
// If we have posix_fallocate use it. Unlike ftruncate it always allocates
// space, so we get an error if the disk is full.
if (int Err = ::posix_fallocate(FD, 0, Size)) {
- if (Err != EINVAL && Err != EOPNOTSUPP)
+#ifdef _AIX
+ constexpr int NotSupportedError = ENOTSUP;
+#else
+ constexpr int NotSupportedError = EOPNOTSUPP;
+#endif
+ if (Err != EINVAL && Err != NotSupportedError)
return std::error_code(Err, std::generic_category());
}
#endif