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fix os.unlinkatW implementation

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This commit is contained in:
Andrew Kelley 2019-10-21 20:58:53 -04:00
parent 65165554d0
commit fc6f84f3f0
2 changed files with 19 additions and 4 deletions
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22
lib/std/os.zig
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@ -1045,11 +1045,24 @@ pub fn unlinkatW(dirfd: fd_t, sub_path_w: [*]const u16, flags: u32) UnlinkatErro
w.ULONG(w.FILE_DELETE_ON_CLOSE)
else
w.ULONG(w.FILE_DELETE_ON_CLOSE | w.FILE_NON_DIRECTORY_FILE);
var nt_name: w.UNICODE_STRING = undefined;
if (w.ntdll.RtlDosPathNameToNtPathName_U(sub_path_w, &nt_name, null, null) == 0) {
return error.FileNotFound;
const path_len_bytes = @intCast(u16, mem.toSliceConst(u16, sub_path_w).len * 2);
var nt_name = w.UNICODE_STRING{
.Length = path_len_bytes,
.MaximumLength = path_len_bytes,
// The Windows API makes this mutable, but it will not mutate here.
.Buffer = @intToPtr([*]u16, @ptrToInt(sub_path_w)),
};
if (sub_path_w[0] == '.' and sub_path_w[1] == 0) {
// Windows does not recognize this, but it does work with empty string.
nt_name.Length = 0;
}
defer w.ntdll.RtlFreeUnicodeString(&nt_name);
if (sub_path_w[0] == '.' and sub_path_w[1] == '.' and sub_path_w[2] == 0) {
// Can't remove the parent directory with an open handle.
return error.FileBusy;
}
var attr = w.OBJECT_ATTRIBUTES{
.Length = @sizeOf(w.OBJECT_ATTRIBUTES),
@ -1082,6 +1095,7 @@ pub fn unlinkatW(dirfd: fd_t, sub_path_w: [*]const u16, flags: u32) UnlinkatErro
w.STATUS.OBJECT_NAME_INVALID => unreachable,
w.STATUS.OBJECT_NAME_NOT_FOUND => return error.FileNotFound,
w.STATUS.INVALID_PARAMETER => unreachable,
w.STATUS.FILE_IS_A_DIRECTORY => return error.IsDir,
else => return w.unexpectedStatus(rc),
}
}

1
lib/std/os/windows/status.zig
View File

@ -10,3 +10,4 @@ pub const OBJECT_NAME_INVALID = 0xC0000033;
pub const OBJECT_NAME_NOT_FOUND = 0xC0000034;
pub const OBJECT_PATH_NOT_FOUND = 0xC000003A;
pub const OBJECT_PATH_SYNTAX_BAD = 0xC000003B;
pub const FILE_IS_A_DIRECTORY = 0xC00000BA;