16 ӥå UID  32 ӥå UID ؤѹ˴ؤ

- 桼֤ȥ֤ͥȤΤ ioctl ޤϥǡ¤Ȥ
  Ȥˤϡͥ륳ɤǤ __kernel_uid_t  __kernel_uid32_t 
  θʤФʤޤ

- ͥι¤ΤȥɤǤϡuid_t  gid_t Ѥޤ

32 ӥåȥ桼 ID ˰ܹԤ뤿ˡƤ Linux ƥǤʤ
٤ĤκȤϡΤȤǤ

- ǥˤϡUID/GID κͤȤϴطΤʤ¤
  ޤե륷ƥκե륵ˤä¤ΤǤ
  ȤΤ⡢Υ쥳ɤϡ UID б륪եåȤ˽
  뤫Ǥƥब礭 UID Ŭڤ˰뤫ɤ
  ĤƤϡĴɬפǤƤΥƥˤ 64 ӥå
  Υե륪եåȤ򰷤ΤǤСΤȤȤϤʤʤ
  礦

- ƥࡦƥ󥰡եȤθߴݻ뤫ʤ
  ĤޤꥳȤ褦˸ߴڤΤƤ٤ (ߡ
   16 ӥå UID  GID ϡȤƥǥ˽񤭹ޤƤꡢ
  ѥǥ󥰥ڡäϡΩ 32 ӥå UID  GID Ǽ
  Τ˻ȤƤޤ)

- ߥ졼Ȥ OS  16 ӥå UID ѤƤ硢OS ߥ
  졼 16 ӥå UID ߴΥƥॳƤӽФƤΤ
  Ȥ⡢Ǥʤ硢32 ӥå UID ƥॳŬڤ˻Ѥ
  Τǧɬפ롣

  ϾʤȤ⼡ΤΤ˱ƶޤ
        SunOS ߥ졼
        Solaris ߥ졼
        Intel  iBCS

        sparc64 Ǥ sparc32 ߥ졼
        (sparc32 ˲ä줿 32 ӥå UID ƥॳƤ
         ݡȤɬפޤ)

- ƤΥե륷ƥबŬڤư뤳Ȥǧ롣

  ߤΤȤ32 ӥå UID ϼΥե륷ƥФƤưϤǤ
        ext2
        ufs
        isofs
        nfs
        coda
        udf

  Υե륷ƥФ ioctl() νϤǤƤޤ
        ncpfs
        smbfs

  Υե륷ƥˤϡ16 ӥå UID Υåץ饦ɤɻߤ
  ñʽܤƤޤ
        minix
        sysv
        qnx4

  ¾Υե륷ƥϡޤåƤޤ

- ncpfs ե륷ƥ smpfs ե륷ƥϡߤΤȤƤ
  ioctl() ˤ 32 ӥå UID ѤǤޤ32 ӥå UID 
   ioctl() ĤɲäޤäɬפǤ (桼֤
  ֤ͥȤΤǤȤꤵ뿷ǡ¤ΤΤ
  ɬפǤ)

- ELF סեޥåȤϡarm, i386, m68k, sh, sparc32 Ǥ 16
  ӥå UID ݡȤƤޤ󡣤Τϡ餯פ
  ȤǤϤޤ󤬡Ȥ顢 ELF ɲäɬ
  Ǥ礦

- ͥ NFS Ф򥳥ȥ뤹Τ˻Ȥ ioctl() ϡarm,
  i386, m68k, sh, sparc32 Ǥ 16 ӥå UID ݡȤޤ

- AX25 ͥåȥ UID ޥåԥ󥰵ǽŬڤư뤳Ȥǧ
  (桼֤ȥ֤ͥȤΤΤȤǡ 32 ӥå
   ȤƤΤǡʤϤǤ)

Chris Wing
wingc@umich.edu

ǽ 2000 ǯ 1  11 

------------------------------------------------------------
Ρ JF ץ < http://www.linux.or.jp/JF/ >
   2004/05/17
ԡ    ɧ <takahiko(a)hakubi.co.jp>
     IKEDA Katsumi <ikedak(a)rg8.so-net.ne.jp>
     Seiji Kaneko <skaneko(a)a2.mbn.or.jp>
