xiaoxiang781216 commented on code in PR #3532:
URL: https://github.com/apache/nuttx-apps/pull/3532#discussion_r3464556292
##########
netutils/dropbear/port/nuttx_compat.c:
##########
@@ -0,0 +1,78 @@
+/****************************************************************************
+ * apps/netutils/dropbear/port/nuttx_compat.c
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <errno.h>
+#include <grp.h>
+#include <unistd.h>
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+static char g_dropbear_shell[] = "/bin/sh";
+static int g_shell_returned;
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void dropbear_setusershell(void)
+{
+ g_shell_returned = 0;
+}
+
+FAR char *dropbear_getusershell(void)
+{
+ if (g_shell_returned == 0)
+ {
+ g_shell_returned = 1;
+ return g_dropbear_shell;
+ }
+
+ return NULL;
+}
+
+void dropbear_endusershell(void)
+{
+ g_shell_returned = 0;
+}
+
+int dropbear_getgroups(int size, gid_t list[])
+{
+ (void)size;
+ (void)list;
+
+ errno = ENOSYS;
+ return -1;
+}
+
+int link(FAR const char *path1, FAR const char *path2)
Review Comment:
Ok, since NuttX VFS doesn't support the hard link yet, so it's better to set
errno to ENOSYS at
https://github.com/apache/nuttx/blob/master/fs/vfs/fs_link.c#L63.
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