Why l1_idFileSystem is answered by st.st_ex_dev?

[withlog at yahoo.com]

 Hi, everybody:
       I read the function smbd_do_qfsinfo.  I found that in case SMB_INFO_ALLOCATION, there is following  sentence:
      SIVAL(pdata,l1_idFileSystem,st.st_ex_dev);
      My question is why use  st.st_ex_dev ?  Actually, according to [MS-CIFS], it is the id of file system. If we call the function statfs, we will get the  struct statfs *buf.  In this struct, there is a "fsid_t f_fsid;". Why not use this  f_fsid?


      Thanks!


      Andy,
      10, 26th

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