diff --git a/tests/salvage/ncp_delete_smoke.c b/tests/salvage/ncp_delete_smoke.c
index 0e4349d..c0a488d 100644
--- a/tests/salvage/ncp_delete_smoke.c
+++ b/tests/salvage/ncp_delete_smoke.c
@@ -1,9 +1,10 @@
 /*
  * Linux smoke helper for classic NetWare file create/delete.
  *
- * The helper intentionally uses normal NCP file create/close/delete requests,
- * not a local Unix unlink.  It is used by the salvage smoke script to verify
- * that mars_nwe captures files deleted through the server path.
+ * The helper intentionally uses the official ncpfs ncplib create/close/erase
+ * APIs, not private request packing or a local Unix unlink.  It is used by
+ * the salvage smoke script to verify that mars_nwe captures files deleted
+ * through the server path.
  */
 
 #include <errno.h>
@@ -16,14 +17,6 @@
 #include <ncp/ncplib.h>
 #include <ncp/kernel/ncp.h>
 
-#define NCP_CREATE_FILE_OVERWRITE 0x43
-#define NCP_CLOSE_FILE            0x42
-#define NCP_DELETE_FILE           0x44
-#define NWE_INVALID_PATH          0x9c
-#ifndef NWE_INVALID_NCP_PACKET_LENGTH
-#define NWE_INVALID_NCP_PACKET_LENGTH 0x7e
-#endif
-
 static void usage(const char *prog)
 {
     fprintf(stderr,
@@ -51,94 +44,6 @@ static int parse_u32(const char *text, uint32_t *value)
     return 0;
 }
 
-static uint32_t le32_to_cpu(const uint8_t p[4])
-{
-    return ((uint32_t)p[0]) |
-           ((uint32_t)p[1] << 8) |
-           ((uint32_t)p[2] << 16) |
-           ((uint32_t)p[3] << 24);
-}
-
-static void cpu_to_le32(uint32_t v, uint8_t p[4])
-{
-    p[0] = (uint8_t)v;
-    p[1] = (uint8_t)(v >> 8);
-    p[2] = (uint8_t)(v >> 16);
-    p[3] = (uint8_t)(v >> 24);
-}
-
-static NWCCODE ncp_create_file(NWCONN_HANDLE conn, const char *path,
-                               uint32_t *file_handle)
-{
-    size_t path_len = strlen(path);
-    uint8_t request[1 + 1 + 1 + 255];
-    uint8_t reply_buf[2 + 4 + 2 + 64];
-    NW_FRAGMENT reply;
-    NWCCODE err;
-
-    if (path_len > 255)
-        return NWE_INVALID_PATH;
-
-    request[0] = 0;                 /* directory handle 0, raw VOL:path */
-    request[1] = 0;                 /* create attributes */
-    request[2] = (uint8_t)path_len;
-    memcpy(request + 3, path, path_len);
-
-    memset(reply_buf, 0, sizeof(reply_buf));
-    reply.fragAddr.rw = reply_buf;
-    reply.fragSize = sizeof(reply_buf);
-
-    err = NWRequestSimple(conn, NCP_CREATE_FILE_OVERWRITE,
-                          request, 3 + path_len, &reply);
-    if (err)
-        return err;
-    if (reply.fragSize < 6)
-        return NWE_INVALID_NCP_PACKET_LENGTH;
-
-    *file_handle = le32_to_cpu(reply_buf + 2);
-    return 0;
-}
-
-static NWCCODE ncp_close_file(NWCONN_HANDLE conn, uint32_t file_handle)
-{
-    uint8_t request[1 + 2 + 4];
-    NW_FRAGMENT reply;
-    NWCCODE err;
-
-    memset(request, 0, sizeof(request));
-    request[0] = 0;                 /* reserved */
-    request[1] = 0;
-    request[2] = 0;                 /* extended file handle */
-    cpu_to_le32(file_handle, request + 3);
-
-    reply.fragAddr.rw = NULL;
-    reply.fragSize = 0;
-
-    err = NWRequestSimple(conn, NCP_CLOSE_FILE,
-                          request, sizeof(request), &reply);
-    return err;
-}
-
-static NWCCODE ncp_delete_file(NWCONN_HANDLE conn, const char *path)
-{
-    size_t path_len = strlen(path);
-    uint8_t request[1 + 1 + 1 + 255];
-    NW_FRAGMENT reply;
-
-    if (path_len > 255)
-        return NWE_INVALID_PATH;
-
-    request[0] = 0;                 /* directory handle 0, raw VOL:path */
-    request[1] = 0;                 /* search attributes */
-    request[2] = (uint8_t)path_len;
-    memcpy(request + 3, path, path_len);
-
-    reply.fragAddr.rw = NULL;
-    reply.fragSize = 0;
-
-    return NWRequestSimple(conn, NCP_DELETE_FILE,
-                           request, 3 + path_len, &reply);
-}
 
 int main(int argc, char **argv)
 {
@@ -146,11 +51,11 @@ int main(int argc, char **argv)
     long init_err = 0;
     const char *path = NULL;
     uint32_t expect_delete = 0xffffffffU;
-    uint32_t file_handle = 0;
+    struct ncp_file_info file_info;
     int create = 1;
     int delete = 1;
     int i;
-    NWCCODE err;
+    long err;
 
     if (NWCallsInit(NULL, NULL)) {
         fprintf(stderr, "NWCallsInit failed\n");
@@ -199,29 +104,29 @@ int main(int argc, char **argv)
     }
 
     if (create) {
-        err = ncp_create_file(conn, path, &file_handle);
+        memset(&file_info, 0, sizeof(file_info));
+        err = ncp_create_file(conn, 0, path, 0, &file_info);
         if (err) {
             fprintf(stderr, "NCP create failed: path=%s error=0x%04x\n",
                     path, (unsigned int)err);
             ncp_close(conn);
             return 1;
         }
-        err = ncp_close_file(conn, file_handle);
+        err = ncp_close_file(conn, file_info.file_id);
         if (err) {
             fprintf(stderr,
-                    "NCP close failed: path=%s handle=0x%08x error=0x%04x\n",
-                    path, (unsigned int)file_handle, (unsigned int)err);
+                    "NCP close failed: path=%s error=0x%04x\n",
+                    path, (unsigned int)err);
             ncp_close(conn);
             return 1;
         }
-        printf("NCP create path=%s handle=0x%08x verified\n",
-               path, (unsigned int)file_handle);
+        printf("NCP create path=%s verified\n", path);
     }
 
     if (delete) {
-        err = ncp_delete_file(conn, path);
+        err = ncp_erase_file(conn, 0, path, 0);
         if (expect_delete != 0xffffffffU) {
-            if (err != (NWCCODE)expect_delete) {
+            if (err != (long)expect_delete) {
                 fprintf(stderr,
                         "NCP delete completion mismatch: path=%s got=0x%04x expected=0x%02x\n",
                         path, (unsigned int)err, (unsigned int)expect_delete);