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syscall: fix Open param names

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syscall.Open param names are confusing, mainly because what should be
named flag is named mode and what should be named mode is named perm.

The name perm is used as synonym for mode in other places, so keep
it as is. Rename mode to flag to match the real meaning of the
parameter. Also, rename path to name for consistency with other
usage of the same parameter.

Change-Id: Ideed09839d80c0383584c2268afbb6cc09ffda8c
Reviewed-on: https://go-review.googlesource.com/c/go/+/619276
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
qmuntal 2024-10-10 11:09:13 +02:00 committed by Quim Muntal
parent a9abbac4c8
commit 9cc737d482
2 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/syscall/syscall_windows.go
View File

@ -341,16 +341,16 @@ func makeInheritSa() *SecurityAttributes {
return &sa
}
func Open(path string, mode int, perm uint32) (fd Handle, err error) {
if len(path) == 0 {
func Open(name string, flag int, perm uint32) (fd Handle, err error) {
if len(name) == 0 {
return InvalidHandle, ERROR_FILE_NOT_FOUND
}
pathp, err := UTF16PtrFromString(path)
namep, err := UTF16PtrFromString(name)
if err != nil {
return InvalidHandle, err
}
var access uint32
switch mode & (O_RDONLY | O_WRONLY | O_RDWR) {
switch flag & (O_RDONLY | O_WRONLY | O_RDWR) {
case O_RDONLY:
access = GENERIC_READ
case O_WRONLY:
@ -358,16 +358,16 @@ func Open(path string, mode int, perm uint32) (fd Handle, err error) {
case O_RDWR:
access = GENERIC_READ | GENERIC_WRITE
}
if mode&O_CREAT != 0 {
if flag&O_CREAT != 0 {
access |= GENERIC_WRITE
}
if mode&O_APPEND != 0 {
if flag&O_APPEND != 0 {
access &^= GENERIC_WRITE
access |= FILE_APPEND_DATA
}
sharemode := uint32(FILE_SHARE_READ | FILE_SHARE_WRITE)
var sa *SecurityAttributes
if mode&O_CLOEXEC == 0 {
if flag&O_CLOEXEC == 0 {
sa = makeInheritSa()
}
// We don't use CREATE_ALWAYS, because when opening a file with
@ -377,9 +377,9 @@ func Open(path string, mode int, perm uint32) (fd Handle, err error) {
// Instead, we ftruncate the file after opening when O_TRUNC is set.
var createmode uint32
switch {
case mode&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL):
case flag&(O_CREAT|O_EXCL) == (O_CREAT | O_EXCL):
createmode = CREATE_NEW
case mode&O_CREAT == O_CREAT:
case flag&O_CREAT == O_CREAT:
createmode = OPEN_ALWAYS
default:
createmode = OPEN_EXISTING
@ -392,22 +392,22 @@ func Open(path string, mode int, perm uint32) (fd Handle, err error) {
// Necessary for opening directory handles.
attrs |= FILE_FLAG_BACKUP_SEMANTICS
}
if mode&O_SYNC != 0 {
if flag&O_SYNC != 0 {
const _FILE_FLAG_WRITE_THROUGH = 0x80000000
attrs |= _FILE_FLAG_WRITE_THROUGH
}
h, err := CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0)
h, err := CreateFile(namep, access, sharemode, sa, createmode, attrs, 0)
if err != nil {
if err == ERROR_ACCESS_DENIED && (mode&O_WRONLY != 0 || mode&O_RDWR != 0) {
if err == ERROR_ACCESS_DENIED && (flag&O_WRONLY != 0 || flag&O_RDWR != 0) {
// We should return EISDIR when we are trying to open a directory with write access.
fa, e1 := GetFileAttributes(pathp)
fa, e1 := GetFileAttributes(namep)
if e1 == nil && fa&FILE_ATTRIBUTE_DIRECTORY != 0 {
err = EISDIR
}
}
return InvalidHandle, err
}
if mode&O_TRUNC == O_TRUNC {
if flag&O_TRUNC == O_TRUNC {
err = Ftruncate(h, 0)
if err != nil {
CloseHandle(h)

4
src/syscall/syscall_windows_test.go
View File

@ -20,7 +20,7 @@ func TestOpen_Dir(t *testing.T) {
dir := t.TempDir()
tests := []struct {
mode int
flag int
err error
}{
{syscall.O_RDONLY, nil},
@ -32,7 +32,7 @@ func TestOpen_Dir(t *testing.T) {
{syscall.O_RDWR, syscall.EISDIR},
}
for i, tt := range tests {
h, err := syscall.Open(dir, tt.mode, 0)
h, err := syscall.Open(dir, tt.flag, 0)
if err == nil {
syscall.CloseHandle(h)
}