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Andy Pan aa5d672a00 os: use O_EXCL instead of O_TRUNC in CopyFS to disallow rewriting existing files
On Linux, a call to creat() is equivalent to calling open() with flags
equal to O_CREAT|O_WRONLY|O_TRUNC, which applies to other platforms
as well in a similar manner. Thus, to force CopyFS's behavior to
comply with the function comment, we need to replace O_TRUNC with O_EXCL.

Fixes #68895

Change-Id: I3e2ab153609d3c8cf20ce5969d6f3ef593833cd1
Reviewed-on: https://go-review.googlesource.com/c/go/+/606095
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-08-16 23:34:41 +00:00
.github .github: update language change proposal template 2024-08-08 19:02:29 +00:00
api math/big,regexp: implement the encoding.TextAppender interface 2024-08-15 23:43:00 +00:00
doc math/big,regexp: implement the encoding.TextAppender interface 2024-08-15 23:43:00 +00:00
lib/time lib/time: use consistent directory in mkzip usage message 2024-03-04 17:32:07 +00:00
misc syscall,misc/wasm: fix path expansion on non-unix platforms 2024-08-09 21:22:25 +00:00
src os: use O_EXCL instead of O_TRUNC in CopyFS to disallow rewriting existing files 2024-08-16 23:34:41 +00:00
test Revert "go/types, types2: only use fileVersion if 1.21 or greater" 2024-08-15 14:43:25 +00:00
.gitattributes
.gitignore runtime,internal: move runtime/internal/sys to internal/runtime/sys 2024-07-23 19:05:35 +00:00
CONTRIBUTING.md
LICENSE LICENSE: update per Google Legal 2024-08-09 14:54:31 +00:00
PATENTS
README.md README: fix CC BY license name 2024-07-22 17:45:27 +00:00
SECURITY.md SECURITY.md: update the Reporting a Vulnerability link 2023-09-22 21:17:24 +00:00
codereview.cfg
go.env cmd/go: additional doc-inspired tests and bug fixes 2023-06-06 19:18:46 +00:00

README.md

The Go Programming Language

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