diff options
Diffstat (limited to 'src/syscall')
| -rw-r--r-- | src/syscall/syscall_windows.go | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/syscall/syscall_windows.go b/src/syscall/syscall_windows.go index 653e20f496..01c039cf28 100644 --- a/src/syscall/syscall_windows.go +++ b/src/syscall/syscall_windows.go @@ -398,22 +398,7 @@ func Open(name string, flag int, perm uint32) (fd Handle, err error) { if flag&O_CLOEXEC == 0 { sa = makeInheritSa() } - // We don't use CREATE_ALWAYS, because when opening a file with - // FILE_ATTRIBUTE_READONLY these will replace an existing file - // with a new, read-only one. See https://go.dev/issue/38225. - // - // Instead, we ftruncate the file after opening when O_TRUNC is set. - var createmode uint32 var attrs uint32 = FILE_ATTRIBUTE_NORMAL - switch { - case flag&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): - createmode = CREATE_NEW - attrs |= FILE_FLAG_OPEN_REPARSE_POINT // don't follow symlinks - case flag&O_CREAT == O_CREAT: - createmode = OPEN_ALWAYS - default: - createmode = OPEN_EXISTING - } if perm&S_IWRITE == 0 { attrs = FILE_ATTRIBUTE_READONLY } @@ -433,6 +418,21 @@ func Open(name string, flag int, perm uint32) (fd Handle, err error) { const _FILE_FLAG_WRITE_THROUGH = 0x80000000 attrs |= _FILE_FLAG_WRITE_THROUGH } + // We don't use CREATE_ALWAYS, because when opening a file with + // FILE_ATTRIBUTE_READONLY these will replace an existing file + // with a new, read-only one. See https://go.dev/issue/38225. + // + // Instead, we ftruncate the file after opening when O_TRUNC is set. + var createmode uint32 + switch { + case flag&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL): + createmode = CREATE_NEW + attrs |= FILE_FLAG_OPEN_REPARSE_POINT // don't follow symlinks + case flag&O_CREAT == O_CREAT: + createmode = OPEN_ALWAYS + default: + createmode = OPEN_EXISTING + } h, err := createFile(namep, access, sharemode, sa, createmode, attrs, 0) if h == InvalidHandle { if err == ERROR_ACCESS_DENIED && (attrs&FILE_FLAG_BACKUP_SEMANTICS == 0) { |