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MoveFileEx can return ACCESS_DENIED

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I observed this on Windows 10, trying to use MoveFileEx with
MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH
to overwrite a running executable.
This commit is contained in:
Andrew Kelley 2020-12-09 15:03:17 -07:00
parent ae3fd86dcc
commit 6e636064e6
1 changed files with 2 additions and 1 deletions
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3
lib/std/os/windows.zig
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@ -865,7 +865,7 @@ pub fn DeleteFile(sub_path_w: []const u16, options: DeleteFileOptions) DeleteFil
}
}
pub const MoveFileError = error{ FileNotFound, Unexpected };
pub const MoveFileError = error{ FileNotFound, AccessDenied, Unexpected };
pub fn MoveFileEx(old_path: []const u8, new_path: []const u8, flags: DWORD) MoveFileError!void {
const old_path_w = try sliceToPrefixedFileW(old_path);
@ -877,6 +877,7 @@ pub fn MoveFileExW(old_path: [*:0]const u16, new_path: [*:0]const u16, flags: DW
if (kernel32.MoveFileExW(old_path, new_path, flags) == 0) {
switch (kernel32.GetLastError()) {
.FILE_NOT_FOUND => return error.FileNotFound,
.ACCESS_DENIED => return error.AccessDenied,
else => |err| return unexpectedError(err),
}
}