[syserror] Remove pkg syserror.

Removes package syserror and moves still relevant code to either linuxerr
or to syserr (to be later removed).

Internal errors are converted from random types to *errors.Error types used
in linuxerr. Internal errors are in linuxerr/internal.go.

PiperOrigin-RevId: 390724202

2 files changed, 7 insertions, 5 deletions

diff --git a/pkg/safecopy/BUILD b/pkg/safecopy/BUILD
index db5787302..0a045fc8e 100644
--- a/pkg/safecopy/BUILD
+++ b/pkg/safecopy/BUILD
@@ -19,7 +19,8 @@ go_library(
     visibility = ["//:sandbox"],
     deps = [
         "//pkg/abi/linux",
-        "//pkg/syserror",
+        "//pkg/errors",
+        "//pkg/errors/linuxerr",
         "@org_golang_x_sys//unix:go_default_library",
     ],
 )
diff --git a/pkg/safecopy/safecopy.go b/pkg/safecopy/safecopy.go
index df63dd5f1..5e6f903ff 100644
--- a/pkg/safecopy/safecopy.go
+++ b/pkg/safecopy/safecopy.go
@@ -21,7 +21,8 @@ import (
 	"runtime"
 
 	"golang.org/x/sys/unix"
-	"gvisor.dev/gvisor/pkg/syserror"
+	"gvisor.dev/gvisor/pkg/errors"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 )
 
 // SegvError is returned when a safecopy function receives SIGSEGV.
@@ -137,12 +138,12 @@ func init() {
 	if err := ReplaceSignalHandler(unix.SIGBUS, addrOfSignalHandler(), &savedSigBusHandler); err != nil {
 		panic(fmt.Sprintf("Unable to set handler for SIGBUS: %v", err))
 	}
-	syserror.AddErrorUnwrapper(func(e error) (unix.Errno, bool) {
+	linuxerr.AddErrorUnwrapper(func(e error) (*errors.Error, bool) {
 		switch e.(type) {
 		case SegvError, BusError, AlignmentError:
-			return unix.EFAULT, true
+			return linuxerr.EFAULT, true
 		default:
-			return 0, false
+			return nil, false
 		}
 	})
 }