1Chinese translated version of Documentation/magic-number.txt 2 3If you have any comment or update to the content, please post to LKML directly. 4However, if you have problem communicating in English you can also ask the 5Chinese maintainer for help. Contact the Chinese maintainer, if this 6translation is outdated or there is problem with translation. 7 8Chinese maintainer: Jia Wei Wei <harryxiyou@gmail.com> 9--------------------------------------------------------------------- 10Documentation/magic-number.txt的中文翻译 11 12如果想评论或更新本文的内容，请直接发信到LKML。如果你使用英文交流有困难的话，也可 13以向中文版维护者求助。如果本翻译更新不及时或者翻译存在问题，请联系中文版维护者。 14 15中文版维护者： 贾威威 Jia Wei Wei <harryxiyou@gmail.com> 16中文版翻译者： 贾威威 Jia Wei Wei <harryxiyou@gmail.com> 17中文版校译者： 贾威威 Jia Wei Wei <harryxiyou@gmail.com> 18 19以下为正文 20--------------------------------------------------------------------- 21这个文件是有关当前使用的魔术值注册表。当你给一个结构添加了一个魔术值，你也应该把这个魔术值添加到这个文件，因为我们最好把用于各种结构的魔术值统一起来。 22 23使用魔术值来保护内核数据结构是一个非常好的主意。这就允许你在运行期检查(a)一个结构是否已经被攻击，或者(b)你已经给一个例行程序通过了一个错误的结构。后一种情况特别地有用---特别是当你通过一个空指针指向结构体的时候。tty源码，例如，经常通过特定驱动使用这种方法并且反复地排列特定方面的结构。 24 25使用魔术值的方法是在结构的开始处声明的，如下： 26 27struct tty_ldisc { 28 int magic; 29 ... 30}; 31 32当你以后给内核添加增强功能的时候，请遵守这条规则！这样就会节省数不清的调试时间，特别是一些古怪的情况，例如，数组超出范围并且重新写了超出部分。遵守这个规则，这些情况可以被快速地，安全地避免。 33 34 Theodore Ts'o 35 31 Mar 94 36 37给当前的Linux 2.1.55添加魔术表。 38 39 Michael Chastain 40 <mailto:mec@shout.net> 41 22 Sep 1997 42 43现在应该最新的Linux 2.1.112.因为在特性冻结期间，不能在2.2.x前改变任何东西。这些条目被数域所排序。 44 45 Krzysztof G.Baranowski 46 <mailto: kgb@knm.org.pl> 47 29 Jul 1998 48 49更新魔术表到Linux 2.5.45。刚好越过特性冻结，但是有可能还会有一些新的魔术值在2.6.x之前融入到内核中。 50 51 Petr Baudis 52 <pasky@ucw.cz> 53 03 Nov 2002 54 55更新魔术表到Linux 2.5.74。 56 57 Fabian Frederick 58 <ffrederick@users.sourceforge.net> 59 09 Jul 2003 60 61魔术名 地址 结构 所在文件 62=========================================================================== 63PG_MAGIC 'P' pg_{read,write}_hdr include/linux/pg.h 64CMAGIC 0x0111 user include/linux/a.out.h 65MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h 66HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c 67APM_BIOS_MAGIC 0x4101 apm_user arch/x86/kernel/apm_32.c 68CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h 69DB_MAGIC 0x4442 fc_info drivers/net/iph5526_novram.c 70DL_MAGIC 0x444d fc_info drivers/net/iph5526_novram.c 71FASYNC_MAGIC 0x4601 fasync_struct include/linux/fs.h 72FF_MAGIC 0x4646 fc_info drivers/net/iph5526_novram.c 73ISICOM_MAGIC 0x4d54 isi_port include/linux/isicom.h 74PTY_MAGIC 0x5001 drivers/char/pty.c 75PPP_MAGIC 0x5002 ppp include/linux/if_pppvar.h 76SERIAL_MAGIC 0x5301 async_struct include/linux/serial.h 77SSTATE_MAGIC 0x5302 serial_state include/linux/serial.h 78SLIP_MAGIC 0x5302 slip drivers/net/slip.h 79STRIP_MAGIC 0x5303 strip drivers/net/strip.c 80X25_ASY_MAGIC 0x5303 x25_asy drivers/net/x25_asy.h 81SIXPACK_MAGIC 0x5304 sixpack drivers/net/hamradio/6pack.h 82AX25_MAGIC 0x5316 ax_disp drivers/net/mkiss.h 83TTY_MAGIC 0x5401 tty_struct include/linux/tty.h 84MGSL_MAGIC 0x5401 mgsl_info drivers/char/synclink.c 85TTY_DRIVER_MAGIC 0x5402 tty_driver include/linux/tty_driver.h 86MGSLPC_MAGIC 0x5402 mgslpc_info drivers/char/pcmcia/synclink_cs.c 87TTY_LDISC_MAGIC 0x5403 tty_ldisc include/linux/tty_ldisc.h 88USB_SERIAL_MAGIC 0x6702 usb_serial drivers/usb/serial/usb-serial.h 89FULL_DUPLEX_MAGIC 0x6969 drivers/net/ethernet/dec/tulip/de2104x.c 90USB_BLUETOOTH_MAGIC 0x6d02 usb_bluetooth drivers/usb/class/bluetty.c 91RFCOMM_TTY_MAGIC 0x6d02 net/bluetooth/rfcomm/tty.c 92USB_SERIAL_PORT_MAGIC 0x7301 usb_serial_port drivers/usb/serial/usb-serial.h 93CG_MAGIC 0x00090255 ufs_cylinder_group include/linux/ufs_fs.h 94RPORT_MAGIC 0x00525001 r_port drivers/char/rocket_int.h 95LSEMAGIC 0x05091998 lse drivers/fc4/fc.c 96GDTIOCTL_MAGIC 0x06030f07 gdth_iowr_str drivers/scsi/gdth_ioctl.h 97RIEBL_MAGIC 0x09051990 drivers/net/atarilance.c 98NBD_REQUEST_MAGIC 0x12560953 nbd_request include/linux/nbd.h 99RED_MAGIC2 0x170fc2a5 (any) mm/slab.c 100BAYCOM_MAGIC 0x19730510 baycom_state drivers/net/baycom_epp.c 101ISDN_X25IFACE_MAGIC 0x1e75a2b9 isdn_x25iface_proto_data 102 drivers/isdn/isdn_x25iface.h 103ECP_MAGIC 0x21504345 cdkecpsig include/linux/cdk.h 104LSOMAGIC 0x27091997 lso drivers/fc4/fc.c 105LSMAGIC 0x2a3b4d2a ls drivers/fc4/fc.c 106WANPIPE_MAGIC 0x414C4453 sdla_{dump,exec} include/linux/wanpipe.h 107CS_CARD_MAGIC 0x43525553 cs_card sound/oss/cs46xx.c 108LABELCL_MAGIC 0x4857434c labelcl_info_s include/asm/ia64/sn/labelcl.h 109ISDN_ASYNC_MAGIC 0x49344C01 modem_info include/linux/isdn.h 110CTC_ASYNC_MAGIC 0x49344C01 ctc_tty_info drivers/s390/net/ctctty.c 111ISDN_NET_MAGIC 0x49344C02 isdn_net_local_s drivers/isdn/i4l/isdn_net_lib.h 112SAVEKMSG_MAGIC2 0x4B4D5347 savekmsg arch/*/amiga/config.c 113CS_STATE_MAGIC 0x4c4f4749 cs_state sound/oss/cs46xx.c 114SLAB_C_MAGIC 0x4f17a36d kmem_cache mm/slab.c 115COW_MAGIC 0x4f4f4f4d cow_header_v1 arch/um/drivers/ubd_user.c 116I810_CARD_MAGIC 0x5072696E i810_card sound/oss/i810_audio.c 117TRIDENT_CARD_MAGIC 0x5072696E trident_card sound/oss/trident.c 118ROUTER_MAGIC 0x524d4157 wan_device [in wanrouter.h pre 3.9] 119SCC_MAGIC 0x52696368 gs_port drivers/char/scc.h 120SAVEKMSG_MAGIC1 0x53415645 savekmsg arch/*/amiga/config.c 121GDA_MAGIC 0x58464552 gda arch/mips/include/asm/sn/gda.h 122RED_MAGIC1 0x5a2cf071 (any) mm/slab.c 123EEPROM_MAGIC_VALUE 0x5ab478d2 lanai_dev drivers/atm/lanai.c 124HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state include/linux/hdlcdrv.h 125PCXX_MAGIC 0x5c6df104 channel drivers/char/pcxx.h 126KV_MAGIC 0x5f4b565f kernel_vars_s arch/mips/include/asm/sn/klkernvars.h 127I810_STATE_MAGIC 0x63657373 i810_state sound/oss/i810_audio.c 128TRIDENT_STATE_MAGIC 0x63657373 trient_state sound/oss/trident.c 129M3_CARD_MAGIC 0x646e6f50 m3_card sound/oss/maestro3.c 130FW_HEADER_MAGIC 0x65726F66 fw_header drivers/atm/fore200e.h 131SLOT_MAGIC 0x67267321 slot drivers/hotplug/cpqphp.h 132SLOT_MAGIC 0x67267322 slot drivers/hotplug/acpiphp.h 133LO_MAGIC 0x68797548 nbd_device include/linux/nbd.h 134OPROFILE_MAGIC 0x6f70726f super_block drivers/oprofile/oprofilefs.h 135M3_STATE_MAGIC 0x734d724d m3_state sound/oss/maestro3.c 136VMALLOC_MAGIC 0x87654320 snd_alloc_track sound/core/memory.c 137KMALLOC_MAGIC 0x87654321 snd_alloc_track sound/core/memory.c 138PWC_MAGIC 0x89DC10AB pwc_device drivers/usb/media/pwc.h 139NBD_REPLY_MAGIC 0x96744668 nbd_reply include/linux/nbd.h 140ENI155_MAGIC 0xa54b872d midway_eprom drivers/atm/eni.h 141SCI_MAGIC 0xbabeface gs_port drivers/char/sh-sci.h 142CODA_MAGIC 0xC0DAC0DA coda_file_info include/linux/coda_fs_i.h 143DPMEM_MAGIC 0xc0ffee11 gdt_pci_sram drivers/scsi/gdth.h 144YAM_MAGIC 0xF10A7654 yam_port drivers/net/hamradio/yam.c 145CCB_MAGIC 0xf2691ad2 ccb drivers/scsi/ncr53c8xx.c 146QUEUE_MAGIC_FREE 0xf7e1c9a3 queue_entry drivers/scsi/arm/queue.c 147QUEUE_MAGIC_USED 0xf7e1cc33 queue_entry drivers/scsi/arm/queue.c 148HTB_CMAGIC 0xFEFAFEF1 htb_class net/sched/sch_htb.c 149NMI_MAGIC 0x48414d4d455201 nmi_s arch/mips/include/asm/sn/nmi.h 150 151请注意，在声音记忆管理中仍然有一些特殊的为每个驱动定义的魔术值。查看include/sound/sndmagic.h来获取他们完整的列表信息。很多OSS声音驱动拥有自己从声卡PCI ID构建的魔术值-他们也没有被列在这里。 152 153IrDA子系统也使用了大量的自己的魔术值，查看include/net/irda/irda.h来获取他们完整的信息。 154 155HFS是另外一个比较大的使用魔术值的文件系统-你可以在fs/hfs/hfs.h中找到他们。 156