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author | Filippo Valsorda <filippo@golang.org> | 2021-03-23 16:43:18 +0100 |
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committer | Filippo Valsorda <filippo@golang.org> | 2021-03-23 16:43:18 +0100 |
commit | 229a39e347178614d2b5c103cbdc96b7f30a015a (patch) | |
tree | 74cd619fe213fe2047d4ae31d8a99cdee9e84208 /src/os/readfrom_linux_test.go | |
parent | 055f1da6e6b96d4de842fd80773dea6d977fc025 (diff) | |
parent | dcffdac515a1d409bcb61783d57ddb137b4741b9 (diff) | |
download | go-229a39e347178614d2b5c103cbdc96b7f30a015a.tar.gz go-229a39e347178614d2b5c103cbdc96b7f30a015a.zip |
[dev.boringcrypto.go1.15] all: merge go1.15.10 into dev.boringcrypto.go1.15
Change-Id: I2ac6b45dbfcfdaf956f2f4b11b60f8d24130141b
Diffstat (limited to 'src/os/readfrom_linux_test.go')
-rw-r--r-- | src/os/readfrom_linux_test.go | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/os/readfrom_linux_test.go b/src/os/readfrom_linux_test.go index 00faf39fe5..aa3f050667 100644 --- a/src/os/readfrom_linux_test.go +++ b/src/os/readfrom_linux_test.go @@ -361,3 +361,35 @@ func (h *copyFileRangeHook) install() { func (h *copyFileRangeHook) uninstall() { *PollCopyFileRangeP = h.original } + +// On some kernels copy_file_range fails on files in /proc. +func TestProcCopy(t *testing.T) { + const cmdlineFile = "/proc/self/cmdline" + cmdline, err := ioutil.ReadFile(cmdlineFile) + if err != nil { + t.Skipf("can't read /proc file: %v", err) + } + in, err := Open(cmdlineFile) + if err != nil { + t.Fatal(err) + } + defer in.Close() + outFile := filepath.Join(t.TempDir(), "cmdline") + out, err := Create(outFile) + if err != nil { + t.Fatal(err) + } + if _, err := io.Copy(out, in); err != nil { + t.Fatal(err) + } + if err := out.Close(); err != nil { + t.Fatal(err) + } + copy, err := ioutil.ReadFile(outFile) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(cmdline, copy) { + t.Errorf("copy of %q got %q want %q\n", cmdlineFile, copy, cmdline) + } +} |