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| author | Ian Lance Taylor <iant@golang.org> | 2020-08-12 12:09:35 -0700 |
|---|---|---|
| committer | Dmitri Shuralyov <dmitshur@golang.org> | 2020-08-21 23:20:23 +0000 |
| commit | f2b710998902d6754d62810e1577c01313763342 (patch) | |
| tree | 10fcf0ee363b4e908d64cde2edca5c192b01b491 | |
| parent | 9c17883f28ceb2aba94ae7f51269f1c982fd7f8b (diff) | |
| download | go-f2b710998902d6754d62810e1577c01313763342.tar.gz go-f2b710998902d6754d62810e1577c01313763342.zip | |
[release-branch.go1.15] internal/poll: treat copy_file_range EOPNOTSUPP as not-handled
For #40731
Fixes #40739
Change-Id: I3e29878d597318acf5edcc38497aa2624f72be35
Reviewed-on: https://go-review.googlesource.com/c/go/+/248258
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
(cherry picked from commit d3a411b6debccb665da3497e7fa597c9a5ff16f1)
Reviewed-on: https://go-review.googlesource.com/c/go/+/249197
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
| -rw-r--r-- | src/internal/poll/copy_file_range_linux.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/internal/poll/copy_file_range_linux.go b/src/internal/poll/copy_file_range_linux.go index 604607f774..7e67125818 100644 --- a/src/internal/poll/copy_file_range_linux.go +++ b/src/internal/poll/copy_file_range_linux.go @@ -41,7 +41,7 @@ func CopyFileRange(dst, src *FD, remain int64) (written int64, handled bool, err // use copy_file_range(2) again. atomic.StoreInt32(©FileRangeSupported, 0) return 0, false, nil - case syscall.EXDEV, syscall.EINVAL: + case syscall.EXDEV, syscall.EINVAL, syscall.EOPNOTSUPP: // Prior to Linux 5.3, it was not possible to // copy_file_range across file systems. Similarly to // the ENOSYS case above, if we see EXDEV, we have @@ -52,6 +52,9 @@ func CopyFileRange(dst, src *FD, remain int64) (written int64, handled bool, err // dst or src refer to a pipe rather than a regular // file. This is another case where no data has been // transfered, so we consider it unhandled. + // + // If the file is on NFS, we can see EOPNOTSUPP. + // See issue #40731. return 0, false, nil case nil: if n == 0 { |