Allow several device tables and split in two parts our device table
This allows to have a device table for all directories/files and another device table for the device files themselves. Both are needed for static /dev, but only the first one is needed when devtmpfs/mdev/udev are used. We take this opportunity to move the documentation of the device table format in a common location, package/makedevs/README. [Peter: simplify code slightly, fix indentation] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Thomas Petazzoni
Peter Korsgaard
parent
ca520507fc
commit
4e005c47e5
20
fs/Config.in
20
fs/Config.in
@ -36,13 +36,21 @@ config BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_UDEV
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endchoice
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config BR2_ROOTFS_DEVICE_TABLE
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string "Path to the device table"
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depends on BR2_ROOTFS_DEVICE_CREATION_STATIC
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default "target/generic/device_table.txt"
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string "Path to the device tables"
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default "target/generic/device_table.txt target/generic/device_table_dev.txt" \
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if BR2_ROOTFS_DEVICE_CREATION_STATIC
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default "target/generic/device_table.txt" \
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if (BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV || \
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BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_UDEV || \
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BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS)
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help
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Specify the location of a device table, that will be passed
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to the makedevs utility to create all the special device
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files in the target filesystem.
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Specify a space-separated list of device table locations,
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that will be passed to the makedevs utility to create all
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the special device files and assign correct owners and
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permissions on various files in the target filesystem.
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See package/makedevs/README for details on the usage and
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syntax of these files.
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choice
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prompt "Root FS skeleton"
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10
fs/common.mk
10
fs/common.mk
@ -32,7 +32,8 @@
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# macro will automatically generate a compressed filesystem image.
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FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
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ROOTFS_DEVICE_TABLE = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE))
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FULL_DEVICE_TABLE = $(BUILD_DIR)/_device_table.txt
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ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE))
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define ROOTFS_TARGET_INTERNAL
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@ -46,13 +47,14 @@ $(BINARIES_DIR)/rootfs.$(1): $(ROOTFS_$(2)_DEPENDENCIES)
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touch $(BUILD_DIR)/.fakeroot.00000
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cat $(BUILD_DIR)/.fakeroot* > $(FAKEROOT_SCRIPT)
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echo "chown -R 0:0 $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
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ifneq ($(ROOTFS_DEVICE_TABLE),)
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echo "$(HOST_DIR)/usr/bin/makedevs -d $(ROOTFS_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
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ifneq ($(ROOTFS_DEVICE_TABLES),)
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cat $(ROOTFS_DEVICE_TABLES) > $(FULL_DEVICE_TABLE)
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echo "$(HOST_DIR)/usr/bin/makedevs -d $(FULL_DEVICE_TABLE) $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
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endif
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echo "$(ROOTFS_$(2)_CMD)" >> $(FAKEROOT_SCRIPT)
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chmod a+x $(FAKEROOT_SCRIPT)
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$(HOST_DIR)/usr/bin/fakeroot -- $(FAKEROOT_SCRIPT)
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-@rm -f $(FAKEROOT_SCRIPT)
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-@rm -f $(FAKEROOT_SCRIPT) $(FULL_DEVICE_TABLE)
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$(foreach hook,$(ROOTFS_$(2)_POST_GEN_HOOKS),$(call $(hook))$(sep))
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ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
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gzip -9 -c $$@ > $$@.gz
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35
package/makedevs/README
Normal file
35
package/makedevs/README
Normal file
@ -0,0 +1,35 @@
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When building a target filesystem, it is desirable to not have to
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become root and then run 'mknod' a thousand times. Using a device
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table you can create device nodes and directories "on the fly".
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You can do all sorts of interesting things with a device table file.
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For example, if you want to adjust the permissions on a particular
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file you can just add an entry like:
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/sbin/foobar f 2755 0 0 - - - - -
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and (assuming the file /sbin/foobar exists) it will be made setuid
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root (regardless of what its permissions are on the host filesystem.
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Furthermore, you can use a single table entry to create a many device
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minors. For example, if I wanted to create /dev/hda and
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/dev/hda[0-15] I could just use the following two table entries:
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/dev/hda b 640 0 0 3 0 0 0 -
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/dev/hda b 640 0 0 3 1 1 1 15
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Device table entries take the form of:
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<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
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where name is the file name, type can be one of:
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f A regular file
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d Directory
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c Character special device file
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b Block special device file
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p Fifo (named pipe)
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uid is the user id for the target file, gid is the group id for the
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target file. The rest of the entries (major, minor, etc) apply only
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to device special files.
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@ -1,44 +1,15 @@
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# When building a target filesystem, it is desirable to not have to
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# become root and then run 'mknod' a thousand times. Using a device
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# table you can create device nodes and directories "on the fly".
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# See package/makedevs/README for details
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#
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# This is a sample device table file for use with genext2fs. You can
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# do all sorts of interesting things with a device table file. For
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# example, if you want to adjust the permissions on a particular file
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# you can just add an entry like:
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# /sbin/foobar f 2755 0 0 - - - - -
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# and (assuming the file /sbin/foobar exists) it will be made setuid
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# root (regardless of what its permissions are on the host filesystem.
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# Furthermore, you can use a single table entry to create a many device
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# minors. For example, if I wanted to create /dev/hda and /dev/hda[0-15]
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# I could just use the following two table entries:
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# /dev/hda b 640 0 0 3 0 0 0 -
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# /dev/hda b 640 0 0 3 1 1 1 15
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#
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# Device table entries take the form of:
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# <name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
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# where name is the file name, type can be one of:
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# f A regular file
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# d Directory
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# c Character special device file
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# b Block special device file
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# p Fifo (named pipe)
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# uid is the user id for the target file, gid is the group id for the
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# target file. The rest of the entries (major, minor, etc) apply only
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# to device special files.
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# Have fun
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# -Erik Andersen <andersen@codepoet.org>
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# This device table is used to assign proper ownership and permissions
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# on various files. It doesn't create any device file, as it is used
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# in both static device configurations (where /dev/ is static) and in
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# dynamic configurations (where devtmpfs, mdev or udev are used).
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#
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#<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
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/dev d 755 0 0 - - - - -
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/dev/pts d 755 0 0 - - - - -
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/dev/shm d 755 0 0 - - - - -
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/tmp d 1777 0 0 - - - - -
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/etc d 755 0 0 - - - - -
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/home/default d 2755 1000 1000 - - - - -
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#<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
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# <name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
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/dev d 755 0 0 - - - - -
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/tmp d 1777 0 0 - - - - -
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/etc d 755 0 0 - - - - -
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/home/default d 2755 1000 1000 - - - - -
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/bin/busybox f 4755 0 0 - - - - -
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/etc/shadow f 600 0 0 - - - - -
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/etc/passwd f 644 0 0 - - - - -
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@ -48,140 +19,4 @@
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/etc/network/if-post-down.d d 755 0 0 - - - - -
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/usr/share/udhcpc/default.script f 755 0 0 - - - - -
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# uncomment this to allow starting x as non-root
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#/usr/X11R6/bin/Xfbdev f 4755 0 0 - - - - -
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# Normal system devices
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/dev/mem c 640 0 0 1 1 0 0 -
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/dev/kmem c 640 0 0 1 2 0 0 -
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/dev/null c 666 0 0 1 3 0 0 -
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/dev/zero c 666 0 0 1 5 0 0 -
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/dev/random c 666 0 0 1 8 0 0 -
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/dev/urandom c 666 0 0 1 9 0 0 -
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/dev/ram b 640 0 0 1 1 0 0 -
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/dev/ram b 640 0 0 1 0 0 1 4
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/dev/loop b 640 0 0 7 0 0 1 2
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/dev/rtc c 640 0 0 10 135 - - -
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/dev/console c 666 0 0 5 1 - - -
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/dev/tty c 666 0 0 5 0 - - -
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/dev/tty c 666 0 0 4 0 0 1 8
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/dev/ttyp c 666 0 0 3 0 0 1 10
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/dev/ptyp c 666 0 0 2 0 0 1 10
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/dev/ptmx c 666 0 0 5 2 - - -
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/dev/ttyP c 666 0 0 57 0 0 1 4
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/dev/ttyS c 666 0 0 4 64 0 1 4
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/dev/fb c 640 0 5 29 0 0 1 4
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#/dev/ttySA c 666 0 0 204 5 0 1 3
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/dev/psaux c 666 0 0 10 1 0 0 -
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#/dev/ppp c 666 0 0 108 0 - - -
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/dev/ttyAM c 666 0 0 204 16 0 1 3
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/dev/ttyCPM c 666 0 0 204 46 0 1 4
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/dev/ttyAMA c 666 0 0 204 64 0 1 4
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/dev/ttySAC c 666 0 0 204 64 0 1 4
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/dev/ttySC c 666 0 0 204 8 0 1 6
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/dev/ttyPSC c 666 0 0 204 148 0 1 4
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/dev/ttyUL c 666 0 0 204 187 0 1 4
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/dev/ttymxc c 666 0 0 207 16 0 1 3
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# Input stuff
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/dev/input d 755 0 0 - - - - -
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/dev/input/mice c 640 0 0 13 63 0 0 -
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/dev/input/mouse c 660 0 0 13 32 0 1 4
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/dev/input/event c 660 0 0 13 64 0 1 4
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#/dev/input/js c 660 0 0 13 0 0 1 4
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# MTD stuff
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/dev/mtd c 640 0 0 90 0 0 2 4
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/dev/mtdblock b 640 0 0 31 0 0 1 4
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#Tun/tap driver
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/dev/net d 755 0 0 - - - - -
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/dev/net/tun c 660 0 0 10 200 - - -
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# Audio stuff
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#/dev/audio c 666 0 29 14 4 - - -
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#/dev/audio1 c 666 0 29 14 20 - - -
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#/dev/dsp c 666 0 29 14 3 - - -
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#/dev/dsp1 c 666 0 29 14 19 - - -
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#/dev/sndstat c 666 0 29 14 6 - - -
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# User-mode Linux stuff
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#/dev/ubda b 640 0 0 98 0 0 0 -
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#/dev/ubda b 640 0 0 98 1 1 1 15
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# IDE Devices
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/dev/hda b 640 0 0 3 0 0 0 -
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/dev/hda b 640 0 0 3 1 1 1 15
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/dev/hdb b 640 0 0 3 64 0 0 -
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/dev/hdb b 640 0 0 3 65 1 1 15
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#/dev/hdc b 640 0 0 22 0 0 0 -
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#/dev/hdc b 640 0 0 22 1 1 1 15
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#/dev/hdd b 640 0 0 22 64 0 0 -
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#/dev/hdd b 640 0 0 22 65 1 1 15
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#/dev/hde b 640 0 0 33 0 0 0 -
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#/dev/hde b 640 0 0 33 1 1 1 15
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#/dev/hdf b 640 0 0 33 64 0 0 -
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#/dev/hdf b 640 0 0 33 65 1 1 15
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#/dev/hdg b 640 0 0 34 0 0 0 -
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#/dev/hdg b 640 0 0 34 1 1 1 15
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#/dev/hdh b 640 0 0 34 64 0 0 -
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#/dev/hdh b 640 0 0 34 65 1 1 15
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# SCSI Devices
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/dev/sda b 640 0 0 8 0 0 0 -
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/dev/sda b 640 0 0 8 1 1 1 15
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/dev/sdb b 640 0 0 8 16 0 0 -
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/dev/sdb b 640 0 0 8 17 1 1 15
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#/dev/sdc b 640 0 0 8 32 0 0 -
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#/dev/sdc b 640 0 0 8 33 1 1 15
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#/dev/sdd b 640 0 0 8 48 0 0 -
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#/dev/sdd b 640 0 0 8 49 1 1 15
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#/dev/sde b 640 0 0 8 64 0 0 -
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#/dev/sde b 640 0 0 8 65 1 1 15
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#/dev/sdf b 640 0 0 8 80 0 0 -
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#/dev/sdf b 640 0 0 8 81 1 1 15
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#/dev/sdg b 640 0 0 8 96 0 0 -
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#/dev/sdg b 640 0 0 8 97 1 1 15
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#/dev/sdh b 640 0 0 8 112 0 0 -
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#/dev/sdh b 640 0 0 8 113 1 1 15
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#/dev/sg c 640 0 0 21 0 0 1 15
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#/dev/scd b 640 0 0 11 0 0 1 15
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#/dev/st c 640 0 0 9 0 0 1 8
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#/dev/nst c 640 0 0 9 128 0 1 8
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#/dev/st c 640 0 0 9 32 1 1 4
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#/dev/st c 640 0 0 9 64 1 1 4
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#/dev/st c 640 0 0 9 96 1 1 4
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# USB block devices (ub driver)
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/dev/uba b 640 0 0 180 0 0 0 -
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/dev/uba b 640 0 0 180 1 1 1 6
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/dev/ubb b 640 0 0 180 8 0 0 -
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/dev/ubb b 640 0 0 180 65 1 1 6
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# Floppy disk devices
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#/dev/fd b 640 0 0 2 0 0 1 2
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#/dev/fd0d360 b 640 0 0 2 4 0 0 -
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#/dev/fd1d360 b 640 0 0 2 5 0 0 -
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#/dev/fd0h1200 b 640 0 0 2 8 0 0 -
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#/dev/fd1h1200 b 640 0 0 2 9 0 0 -
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#/dev/fd0u1440 b 640 0 0 2 28 0 0 -
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#/dev/fd1u1440 b 640 0 0 2 29 0 0 -
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#/dev/fd0u2880 b 640 0 0 2 32 0 0 -
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#/dev/fd1u2880 b 640 0 0 2 33 0 0 -
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# All the proprietary cdrom devices in the world
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#/dev/aztcd b 640 0 0 29 0 0 0 -
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#/dev/bpcd b 640 0 0 41 0 0 0 -
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#/dev/capi20 c 640 0 0 68 0 0 1 2
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#/dev/cdu31a b 640 0 0 15 0 0 0 -
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#/dev/cdu535 b 640 0 0 24 0 0 0 -
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#/dev/cm206cd b 640 0 0 32 0 0 0 -
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#/dev/sjcd b 640 0 0 18 0 0 0 -
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#/dev/sonycd b 640 0 0 15 0 0 0 -
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#/dev/gscd b 640 0 0 16 0 0 0 -
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#/dev/sbpcd b 640 0 0 25 0 0 0 -
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#/dev/sbpcd b 640 0 0 25 0 0 1 4
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#/dev/mcd b 640 0 0 23 0 0 0 -
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#/dev/optcd b 640 0 0 17 0 0 0 -
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# I2C device nodes
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/dev/i2c- c 666 0 0 89 0 0 1 4
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#/usr/X11R6/bin/Xfbdev f 4755 0 0 - - - - -
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143
target/generic/device_table_dev.txt
Normal file
143
target/generic/device_table_dev.txt
Normal file
@ -0,0 +1,143 @@
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# See package/makedevs/README for details
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#
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# This device table is used only to create device files when a static
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# device configuration is used (entries in /dev are static).
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#
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# <name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>
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# Normal system devices
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/dev/mem c 640 0 0 1 1 0 0 -
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/dev/kmem c 640 0 0 1 2 0 0 -
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/dev/null c 666 0 0 1 3 0 0 -
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/dev/zero c 666 0 0 1 5 0 0 -
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/dev/random c 666 0 0 1 8 0 0 -
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/dev/urandom c 666 0 0 1 9 0 0 -
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/dev/ram b 640 0 0 1 1 0 0 -
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/dev/ram b 640 0 0 1 0 0 1 4
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/dev/loop b 640 0 0 7 0 0 1 2
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/dev/rtc c 640 0 0 10 135 - - -
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/dev/console c 666 0 0 5 1 - - -
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/dev/tty c 666 0 0 5 0 - - -
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/dev/tty c 666 0 0 4 0 0 1 8
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/dev/ttyp c 666 0 0 3 0 0 1 10
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/dev/ptyp c 666 0 0 2 0 0 1 10
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/dev/ptmx c 666 0 0 5 2 - - -
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/dev/ttyP c 666 0 0 57 0 0 1 4
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/dev/ttyS c 666 0 0 4 64 0 1 4
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/dev/fb c 640 0 5 29 0 0 1 4
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#/dev/ttySA c 666 0 0 204 5 0 1 3
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/dev/psaux c 666 0 0 10 1 0 0 -
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#/dev/ppp c 666 0 0 108 0 - - -
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/dev/ttyAM c 666 0 0 204 16 0 1 3
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/dev/ttyCPM c 666 0 0 204 46 0 1 4
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/dev/ttyAMA c 666 0 0 204 64 0 1 4
|
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/dev/ttySAC c 666 0 0 204 64 0 1 4
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/dev/ttySC c 666 0 0 204 8 0 1 6
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/dev/ttyPSC c 666 0 0 204 148 0 1 4
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/dev/ttyUL c 666 0 0 204 187 0 1 4
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/dev/ttymxc c 666 0 0 207 16 0 1 3
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|
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# Input stuff
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/dev/input d 755 0 0 - - - - -
|
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/dev/input/mice c 640 0 0 13 63 0 0 -
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/dev/input/mouse c 660 0 0 13 32 0 1 4
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/dev/input/event c 660 0 0 13 64 0 1 4
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#/dev/input/js c 660 0 0 13 0 0 1 4
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# MTD stuff
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/dev/mtd c 640 0 0 90 0 0 2 4
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/dev/mtdblock b 640 0 0 31 0 0 1 4
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|
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#Tun/tap driver
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/dev/net d 755 0 0 - - - - -
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/dev/net/tun c 660 0 0 10 200 - - -
|
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|
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# Audio stuff
|
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#/dev/audio c 666 0 29 14 4 - - -
|
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#/dev/audio1 c 666 0 29 14 20 - - -
|
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#/dev/dsp c 666 0 29 14 3 - - -
|
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#/dev/dsp1 c 666 0 29 14 19 - - -
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#/dev/sndstat c 666 0 29 14 6 - - -
|
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|
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# User-mode Linux stuff
|
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#/dev/ubda b 640 0 0 98 0 0 0 -
|
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#/dev/ubda b 640 0 0 98 1 1 1 15
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|
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# IDE Devices
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/dev/hda b 640 0 0 3 0 0 0 -
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/dev/hda b 640 0 0 3 1 1 1 15
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/dev/hdb b 640 0 0 3 64 0 0 -
|
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/dev/hdb b 640 0 0 3 65 1 1 15
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#/dev/hdc b 640 0 0 22 0 0 0 -
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#/dev/hdc b 640 0 0 22 1 1 1 15
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#/dev/hdd b 640 0 0 22 64 0 0 -
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#/dev/hdd b 640 0 0 22 65 1 1 15
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#/dev/hde b 640 0 0 33 0 0 0 -
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#/dev/hde b 640 0 0 33 1 1 1 15
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#/dev/hdf b 640 0 0 33 64 0 0 -
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#/dev/hdf b 640 0 0 33 65 1 1 15
|
||||
#/dev/hdg b 640 0 0 34 0 0 0 -
|
||||
#/dev/hdg b 640 0 0 34 1 1 1 15
|
||||
#/dev/hdh b 640 0 0 34 64 0 0 -
|
||||
#/dev/hdh b 640 0 0 34 65 1 1 15
|
||||
|
||||
# SCSI Devices
|
||||
/dev/sda b 640 0 0 8 0 0 0 -
|
||||
/dev/sda b 640 0 0 8 1 1 1 15
|
||||
/dev/sdb b 640 0 0 8 16 0 0 -
|
||||
/dev/sdb b 640 0 0 8 17 1 1 15
|
||||
#/dev/sdc b 640 0 0 8 32 0 0 -
|
||||
#/dev/sdc b 640 0 0 8 33 1 1 15
|
||||
#/dev/sdd b 640 0 0 8 48 0 0 -
|
||||
#/dev/sdd b 640 0 0 8 49 1 1 15
|
||||
#/dev/sde b 640 0 0 8 64 0 0 -
|
||||
#/dev/sde b 640 0 0 8 65 1 1 15
|
||||
#/dev/sdf b 640 0 0 8 80 0 0 -
|
||||
#/dev/sdf b 640 0 0 8 81 1 1 15
|
||||
#/dev/sdg b 640 0 0 8 96 0 0 -
|
||||
#/dev/sdg b 640 0 0 8 97 1 1 15
|
||||
#/dev/sdh b 640 0 0 8 112 0 0 -
|
||||
#/dev/sdh b 640 0 0 8 113 1 1 15
|
||||
#/dev/sg c 640 0 0 21 0 0 1 15
|
||||
#/dev/scd b 640 0 0 11 0 0 1 15
|
||||
#/dev/st c 640 0 0 9 0 0 1 8
|
||||
#/dev/nst c 640 0 0 9 128 0 1 8
|
||||
#/dev/st c 640 0 0 9 32 1 1 4
|
||||
#/dev/st c 640 0 0 9 64 1 1 4
|
||||
#/dev/st c 640 0 0 9 96 1 1 4
|
||||
|
||||
# USB block devices (ub driver)
|
||||
/dev/uba b 640 0 0 180 0 0 0 -
|
||||
/dev/uba b 640 0 0 180 1 1 1 6
|
||||
/dev/ubb b 640 0 0 180 8 0 0 -
|
||||
/dev/ubb b 640 0 0 180 65 1 1 6
|
||||
|
||||
# Floppy disk devices
|
||||
#/dev/fd b 640 0 0 2 0 0 1 2
|
||||
#/dev/fd0d360 b 640 0 0 2 4 0 0 -
|
||||
#/dev/fd1d360 b 640 0 0 2 5 0 0 -
|
||||
#/dev/fd0h1200 b 640 0 0 2 8 0 0 -
|
||||
#/dev/fd1h1200 b 640 0 0 2 9 0 0 -
|
||||
#/dev/fd0u1440 b 640 0 0 2 28 0 0 -
|
||||
#/dev/fd1u1440 b 640 0 0 2 29 0 0 -
|
||||
#/dev/fd0u2880 b 640 0 0 2 32 0 0 -
|
||||
#/dev/fd1u2880 b 640 0 0 2 33 0 0 -
|
||||
|
||||
# All the proprietary cdrom devices in the world
|
||||
#/dev/aztcd b 640 0 0 29 0 0 0 -
|
||||
#/dev/bpcd b 640 0 0 41 0 0 0 -
|
||||
#/dev/capi20 c 640 0 0 68 0 0 1 2
|
||||
#/dev/cdu31a b 640 0 0 15 0 0 0 -
|
||||
#/dev/cdu535 b 640 0 0 24 0 0 0 -
|
||||
#/dev/cm206cd b 640 0 0 32 0 0 0 -
|
||||
#/dev/sjcd b 640 0 0 18 0 0 0 -
|
||||
#/dev/sonycd b 640 0 0 15 0 0 0 -
|
||||
#/dev/gscd b 640 0 0 16 0 0 0 -
|
||||
#/dev/sbpcd b 640 0 0 25 0 0 0 -
|
||||
#/dev/sbpcd b 640 0 0 25 0 0 1 4
|
||||
#/dev/mcd b 640 0 0 23 0 0 0 -
|
||||
#/dev/optcd b 640 0 0 17 0 0 0 -
|
||||
|
||||
# I2C device nodes
|
||||
/dev/i2c- c 666 0 0 89 0 0 1 4
|
||||
Loading…
Reference in New Issue
Block a user