nvsandboxutils: Add usage of GetGpuResource and GetFileContent APIs

This change adds a new discoverer for Sandboxutils to report the file
system paths and associated symbolic links using GetGpuResource and
GetFileContent APIs. Both GPU and MIG devices are supported. If the
Sandboxutils discoverer fails, the NVML discoverer is used to report
the file system information.

Signed-off-by: Evan Lezar <elezar@nvidia.com>
Signed-off-by: Huy Nguyen <huyn@nvidia.com>
Signed-off-by: Sananya Majumder <sananyam@nvidia.com>

internal/platform-support/dgpu/options.go

@@ -19,6 +19,7 @@ package dgpu
 import (
 	"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
 	"github.com/NVIDIA/nvidia-container-toolkit/internal/nvcaps"
+	"github.com/NVIDIA/nvidia-container-toolkit/internal/nvsandboxutils"
 )
 
 type options struct {
@@ -26,10 +27,13 @@ type options struct {
 	devRoot           string
 	nvidiaCDIHookPath string
 
+	isMigDevice bool
 	// migCaps stores the MIG capabilities for the system.
 	// If MIG is not available, this is nil.
 	migCaps      nvcaps.MigCaps
 	migCapsError error
+
+	nvsandboxutilslib nvsandboxutils.Interface
 }
 
 type Option func(*options)
@@ -61,3 +65,10 @@ func WithMIGCaps(migCaps nvcaps.MigCaps) Option {
 		l.migCaps = migCaps
 	}
 }
+
+// WithNvsandboxuitilsLib sets the nvsandboxutils library implementation.
+func WithNvsandboxuitilsLib(nvsandboxutilslib nvsandboxutils.Interface) Option {
+	return func(l *options) {
+		l.nvsandboxutilslib = nvsandboxutilslib
+	}
+}