[PATCH] Update of Documentation/magic-number.txt (resent, v2)

Petr Baudis (pasky@ucw.cz)
Mon, 18 Nov 2002 11:36:44 +0100


this patch (against 2.5.48) updates Documentation/magic-number.txt to the
current state of kernel. It was pretty abadonded in the last few years, so I
did my best, but it's possible (given the charge and intensity of the magical
field covering the whole kernel) that I still missed some of the magic numbers
- so, if you will notice your favourite magic number missing there, please
speak up.

Also, since some of the subsystems introduce fairly large amount of magic
numbers, I placed simply references to the header files where the magic numbers
are defined to the end of the file. I also made few tidyups (removal of tabs
and reordering of few misplaced magics).

I hope the patch is ok, there should be no problems with it. Please apply.

magic-number.txt | 94 +++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 77 insertions(+), 17 deletions(-)

Note that this is the third submission of the patch. There are no magic
changes between 2.5.47 and 2.5.48, thus I only changed the kernel version and

Kind regards,
Petr Baudis

--- linux/Documentation/magic-number.txt Thu Aug 1 23:16:03 2002
+++ linux+pasky/Documentation/magic-number.txt Thu Nov 14 19:22:13 2002
@@ -43,57 +43,117 @@
<mailto: kgb@knm.org.pl>
29 Jul 1998

+Updated the magic table to Linux 2.5.48. Right over the feature freeze,
+but it is possible that some new magic numbers will sneak into the
+kernel before 2.6.x yet.
+ Petr Baudis
+ <pasky@ucw.cz>
+ 18 Nov 2002
Magic Name Number Structure File
-PG_MAGIC 'P' pg_{read,write}_hdr include/linux/pg.h
+PG_MAGIC 'P' pg_{read,write}_hdr include/linux/pg.h
+CMAGIC 0x0111 user include/linux/a.out.h
MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h
RISCOM8_MAGIC 0x0907 riscom_port drivers/char/riscom8.h
+SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h
+AURORA_MAGIC 0x0A18 Aurora_port drivers/sbus/char/aurora.h
+HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c
APM_BIOS_MAGIC 0x4101 apm_user arch/i386/kernel/apm.c
CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h
FASYNC_MAGIC 0x4601 fasync_struct include/linux/fs.h
-PTY_MAGIC 0x5001 (none at the moment)
- drivers/char/pty.c
-PPP_MAGIC 0x5002 ppp include/linux/if_ppp.h
+ISICOM_MAGIC 0x4d54 isi_port include/linux/isicom.h
+PTY_MAGIC 0x5001 (none at the moment)
+ drivers/char/pty.c
+PPP_MAGIC 0x5002 ppp include/linux/if_pppvar.h
SERIAL_MAGIC 0x5301 async_struct include/linux/serial.h
SSTATE_MAGIC 0x5302 serial_state include/linux/serial.h
SLIP_MAGIC 0x5302 slip drivers/net/slip.h
STRIP_MAGIC 0x5303 strip drivers/net/strip.c
X25_ASY_MAGIC 0x5303 x25_asy drivers/net/x25_asy.h
-SIXPACK_MAGIC 0x5304 sixpack drivers/net/hamradio/6pack.h
+SIXPACK_MAGIC 0x5304 sixpack drivers/net/hamradio/6pack.h
AX25_MAGIC 0x5316 ax_disp drivers/net/mkiss.h
ESP_MAGIC 0x53ee esp_struct drivers/char/esp.h
TTY_MAGIC 0x5401 tty_struct include/linux/tty.h
+MGSL_MAGIC 0x5401 mgsl_info drivers/char/synclink.c
TTY_DRIVER_MAGIC 0x5402 tty_driver include/linux/tty_driver.h
+MGSLPC_MAGIC 0x5402 mgslpc_info drivers/char/pcmcia/synclink_cs.c
TTY_LDISC_MAGIC 0x5403 tty_ldisc include/linux/tty_ldisc.h
-SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h
-CG_MAGIC 0x090255 ufs_cylinder_group include/linux/ufs_fs.h
-RPORT_MAGIC 0x525001 r_port drivers/char/rocket_int.h
-GDTIOCTL_MAGIC 0x06030f07 gdth_iowr_str drivers/scsi/gdth_ioctl.h
+USB_SERIAL_MAGIC 0x6702 usb_serial drivers/usb/serial/usb-serial.h
+USB_BLUETOOTH_MAGIC 0x6d02 usb_bluetooth drivers/usb/class/bluetty.c
+RFCOMM_TTY_MAGIC 0x6d02 (note at the moment)
+ net/bluetooth/rfcomm/tty.c
+USB_SERIAL_PORT_MAGIC 0x7301 usb_serial_port drivers/usb/serial/usb-serial.h
+CG_MAGIC 0x00090255 ufs_cylinder_group include/linux/ufs_fs.h
+A2232_MAGIC 0x000a2232 gs_port drivers/char/ser_a2232.h
+SOLARIS_SOCKET_MAGIC 0x000ADDED sol_socket_struct arch/sparc64/solaris/socksys.h
+RPORT_MAGIC 0x00525001 r_port drivers/char/rocket_int.h
+LSEMAGIC 0x05091998 lse drivers/fc4/fc.c
+GDTIOCTL_MAGIC 0x06030f07 gdth_iowr_str drivers/scsi/gdth_ioctl.h
+RIO_MAGIC 0x12345678 gs_port drivers/char/rio/rio_linux.c
+SX_MAGIC 0x12345678 gs_port drivers/char/sx.h
NBD_REQUEST_MAGIC 0x12560953 nbd_request include/linux/nbd.h
-SLAB_RED_MAGIC2 0x170fc2a5 (any) mm/slab.c
+RED_MAGIC2 0x170fc2a5 (any) mm/slab.c
BAYCOM_MAGIC 0x19730510 baycom_state drivers/net/baycom_epp.c
ISDN_X25IFACE_MAGIC 0x1e75a2b9 isdn_x25iface_proto_data
ECP_MAGIC 0x21504345 cdkecpsig include/linux/cdk.h
+LSOMAGIC 0x27091997 lso drivers/fc4/fc.c
LSMAGIC 0x2a3b4d2a ls drivers/fc4/fc.c
-LSOMAGIC 0x2a3c4e3c lso drivers/fc4/fc.c
WANPIPE_MAGIC 0x414C4453 sdla_{dump,exec} include/linux/wanpipe.h
-CODA_CNODE_MAGIC 0x47114711 coda_inode_info include/linux/coda_fs_i.h
+CS_CARD_MAGIC 0x43525553 cs_card sound/oss/cs46xx.c
+LABELCL_MAGIC 0x4857434c labelcl_info_s include/asm/ia64/sn/labelcl.h
ISDN_ASYNC_MAGIC 0x49344C01 modem_info include/linux/isdn.h
-ISDN_NET_MAGIC 0x49344C02 isdn_net_local_s include/linux/isdn.h
+CTC_ASYNC_MAGIC 0x49344C01 ctc_tty_info drivers/s390/net/ctctty.c
+ISDN_NET_MAGIC 0x49344C02 isdn_net_local_s drivers/isdn/i4l/isdn_net_lib.h
+SAVEKMSG_MAGIC2 0x4B4D5347 savekmsg arch/*/amiga/config.c
+TIMER_MAGIC 0x4b87ad6e timer_list include/linux/timer.h
STLI_BOARDMAGIC 0x4bc6c825 stlibrd include/linux/istallion.h
+CS_STATE_MAGIC 0x4c4f4749 cs_state sound/oss/cs46xx.c
SLAB_C_MAGIC 0x4f17a36d kmem_cache_s mm/slab.c
+COW_MAGIC 0x4f4f4f4d cow_header_v1 arch/um/drivers/ubd_user.c
+I810_CARD_MAGIC 0x5072696E i810_card sound/oss/i810_audio.c
+TRIDENT_CARD_MAGIC 0x5072696E trident_card sound/oss/trident.c
ROUTER_MAGIC 0x524d4157 wan_device include/linux/wanrouter.h
-SLAB_RED_MAGIC1 0x5a2cf071 (any) mm/slab.c
+SCC_MAGIC 0x52696368 gs_port drivers/char/scc.h
+SAVEKMSG_MAGIC1 0x53415645 savekmsg arch/*/amiga/config.c
+GDA_MAGIC 0x58464552 gda include/asm-mips64/sn/gda.h
+RED_MAGIC1 0x5a2cf071 (any) mm/slab.c
STL_PORTMAGIC 0x5a7182c9 stlport include/linux/stallion.h
HDLCDRV_MAGIC 0x5ac6e778 hdlcdrv_state include/linux/hdlcdrv.h
-EPCA_MAGIC 0x5c6df104 channel include/linux/epca.h
+EPCA_MAGIC 0x5c6df104 channel include/linux/epca.h
PCXX_MAGIC 0x5c6df104 channel drivers/char/pcxx.h
+KV_MAGIC 0x5f4b565f kernel_vars_s include/asm-mips64/sn/klkernvars.h
+I810_STATE_MAGIC 0x63657373 i810_state sound/oss/i810_audio.c
+TRIDENT_STATE_MAGIC 0x63657373 trient_state sound/oss/trident.c
+M3_CARD_MAGIC 0x646e6f50 m3_card sound/oss/maestro3.c
+SLOT_MAGIC 0x67267321 slot drivers/hotplug/cpqphp.h
+SLOT_MAGIC 0x67267322 slot drivers/hotplug/acpiphp.h
+SLOT_MAGIC 0x67267322 slot drivers/hotplug/cpci_hotplug.h
LO_MAGIC 0x68797548 nbd_device include/linux/nbd.h
+M3_STATE_MAGIC 0x734d724d m3_state sound/oss/maestro3.c
STL_PANELMAGIC 0x7ef621a1 stlpanel include/linux/stallion.h
+VMALLOC_MAGIC 0x87654320 snd_alloc_track sound/core/memory.c
+KMALLOC_MAGIC 0x87654321 snd_alloc_track sound/core/memory.c
+PWC_MAGIC 0x89DC10AB pwc_device drivers/usb/media/pwc.h
NBD_REPLY_MAGIC 0x96744668 nbd_reply include/linux/nbd.h
STL_BOARDMAGIC 0xa2267f52 stlbrd include/linux/stallion.h
-SLAB_MAGIC_ALLOC 0xa5c32f2b kmem_slab_s mm/slab.c
-SLAB_MAGIC_DESTROYED 0xb2f23c5a kmem_slab_s mm/slab.c
+SCI_MAGIC 0xbabeface gs_port drivers/char/sh-sci.h
+CODA_MAGIC 0xC0DAC0DA coda_file_info include/linux/coda_fs_i.h
STLI_PORTMAGIC 0xe671c7a1 stliport include/linux/istallion.h
+YAM_MAGIC 0xF10A7654 yam_port drivers/net/hamradio/yam.c
CCB_MAGIC 0xf2691ad2 ccb drivers/scsi/ncr53c8xx.c
+HTB_CMAGIC 0xFEFAFEF1 htb_class net/sched/sch_htb.c
+NMI_MAGIC 0x48414d4d455201 nmi_s include/asm-mips64/sn/nmi.h
+Note that there are also defined special per-driver magic numbers in sound
+memory managment. See include/sound/sndmagic.h for complete list of them. Many
+OSS sound drivers have their magic numbers constructed from the soundcard PCI
+ID - these are not listed here as well.
+IrDA subsystem also uses large number of own magic numbers, see
+include/net/irda/irda.h for a complete list of them.
+HFS is another larger user of magic numbers - you can find them in
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