syscallcompat: rename thread_credentials files to include "linux"

As with the other files, include "linux" because the code only
builds on linux

renamed:    internal/syscallcompat/thread_credentials.go -> internal/syscallcompat/thread_credentials_linux.go
renamed:    internal/syscallcompat/thread_credentials_368_arm.go -> internal/syscallcompat/thread_credentials_linux_368_arm.go
renamed:    internal/syscallcompat/thread_credentials_other.go -> internal/syscallcompat/thread_credentials_linux_other.go

1 files changed, 0 insertions, 35 deletions

diff --git a/internal/syscallcompat/thread_credentials_other.go b/internal/syscallcompat/thread_credentials_other.go
deleted file mode 100644
index e3c78d0..0000000
--- a/internal/syscallcompat/thread_credentials_other.go
+++ /dev/null
@@ -1,35 +0,0 @@
-//go:build !((linux && 386) || (linux && arm))
-
-package syscallcompat
-
-import (
-	"unsafe"
-
-	"golang.org/x/sys/unix"
-)
-
-// See thread_credentials.go for docs
-
-func Setreuid(ruid int, euid int) (err error) {
-	_, _, e1 := unix.RawSyscall(unix.SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-	if e1 != 0 {
-		err = e1
-	}
-	return
-}
-
-func Setregid(rgid int, egid int) (err error) {
-	_, _, e1 := unix.RawSyscall(unix.SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-	if e1 != 0 {
-		err = e1
-	}
-	return
-}
-
-func setgroups(n int, list *uint32) (err error) {
-	_, _, e1 := unix.RawSyscall(unix.SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-	if e1 != 0 {
-		err = e1
-	}
-	return
-}