Could not compile: constant overflows int

[utsavm9]

Got this error while compiling:

| # github.com/anatol/luks.go
| /home/utsav/go/pkg/mod/github.com/anatol/luks.go@v0.0.0-20210208171804-d44366ded8ec/dm.go:36:19: constant 3241737475 overflows int
| /home/utsav/go/pkg/mod/github.com/anatol/luks.go@v0.0.0-20210208171804-d44366ded8ec/dm.go:59:19: constant 3241737481 overflows int
| /home/utsav/go/pkg/mod/github.com/anatol/luks.go@v0.0.0-20210208171804-d44366ded8ec/dm.go:65:19: constant 3241737478 overflows int
| /home/utsav/go/pkg/mod/github.com/anatol/luks.go@v0.0.0-20210208171804-d44366ded8ec/luks.go:107:16: constant 3241737476 overflows int

I believe I am using go version go1.14.7 linux/amd64, but I might be wrong.

Do you happen to know how can I get past this?

[anatol]

What platform do you use? Is it some 32bit ARM? Show me your uname -a.

[utsavm9]

I believe that must be the case. I do not completely understand the build system I am working with, so it might take me a while to confirm that. Do you suspect this issue to occur in 32-bit Go?

By the way, when I try this on 64-bit machine, it does work.

[anatol]

I believe it fails due to the difference between 32 and 64bit platforms.

The fix would be:

diff --git a/dm.go b/dm.go
index 3262431..ec79b03 100644
--- a/dm.go
+++ b/dm.go
@@ -82,7 +82,7 @@ type targetSpec struct {
 // This flag is later processed by rules at /usr/lib/udev/rules.d/10-dm.rules
 // Per devicecrypt sourcecode only RESUME, REMOVE, RENAME operations need to have DM_UDEV_PRIMARY_SOURCE_FLAG
 // flag set.
-func dmIoctl(controlFile *os.File, cmd int, name string, uuid string, udevEvent bool, specs []targetSpec) error {
+func dmIoctl(controlFile *os.File, cmd uint64, name string, uuid string, udevEvent bool, specs []targetSpec) error {
        const (
                // allocate buffer large enough for dmioctl + specs
                alignment = 8

I will apply it once I carefully test it.