xiaoxiang781216 opened a new pull request #2591:
URL: https://github.com/apache/incubator-nuttx/pull/2591
## Summary
since the softlink is a special node too(include/nuttx/fs.h):
```
#define FSNODEFLAG_TYPE_MASK 0x0000000f /* Isolates type field */
#define FSNODEFLAG_TYPE_DRIVER 0x00000000 /* Character driver */
#define FSNODEFLAG_TYPE_BLOCK 0x00000001 /* Block driver */
#define FSNODEFLAG_TYPE_MOUNTPT 0x00000002 /* Mount point */
#define FSNODEFLAG_TYPE_SPECIAL 0x00000008 /* Special OS type */
#define FSNODEFLAG_TYPE_NAMEDSEM 0x00000008 /* Named semaphore */
#define FSNODEFLAG_TYPE_MQUEUE 0x00000009 /* Message Queue */
#define FSNODEFLAG_TYPE_SHM 0x0000000a /* Shared memory region */
#define FSNODEFLAG_TYPE_MTD 0x0000000b /* Named MTD driver */
#define FSNODEFLAG_TYPE_SOFTLINK 0x0000000c /* Soft link */
#define FSNODEFLAG_DELETED 0x00000010 /* Unlinked */
#define INODE_IS_TYPE(i,t) \
(((i)->i_flags & FSNODEFLAG_TYPE_MASK) == (t))
#define INODE_IS_SPECIAL(i) \
(((i)->i_flags & FSNODEFLAG_TYPE_SPECIAL) != 0)
## Impact
No function change
## Testing
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