Merge pull request #463 from jphickey/fix-454-statvfs-err-translation

Fix #454, Better error translation on statvfs()

src/os/rtems/src/os-impl-filesys.c

@@ -367,17 +367,34 @@ int32 OS_FileSysStatVolume_Impl (uint32 filesys_id, OS_statvfs_t *result)
 {
  OS_filesys_internal_record_t *local = &OS_filesys_table[filesys_id];
  struct statvfs stat_buf;
+ int32 return_code;
 
  if ( statvfs(local->system_mountpt, &stat_buf) != 0 )
  {
- return OS_ERROR;
+ /*
+ * The ENOSYS error means it is not implemented at the system level.
+ * This should translate to the OS_ERR_NOT_IMPLEMENTED OSAL code.
+ */
+ if (errno == ENOSYS)
+ {
+ return_code = OS_ERR_NOT_IMPLEMENTED;
+ }
+ else
+ {
+ OS_DEBUG("%s: %s\n", local->system_mountpt, strerror(errno));
+ return_code = OS_ERROR;
+ }
  }
+ else
+ {
+ result->block_size = stat_buf.f_bsize;
+ result->blocks_free = stat_buf.f_bfree;
+ result->total_blocks = stat_buf.f_blocks;
 
- result->block_size = stat_buf.f_bsize;
- result->blocks_free = stat_buf.f_bfree;
- result->total_blocks = stat_buf.f_blocks;
+ return_code = OS_SUCCESS;
+ }
 
- return(OS_SUCCESS);
+ return (return_code);
 } /* end OS_FileSysStatVolume_Impl */