Age | Commit message (Collapse) | Author |
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SCSI INQUIRY commands are 6 bytes long, not 12 bytes.
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Automounters may need information like this to e.g. allow unprivileged
applications to mount filesystems from a CF card but not from
other ATA devices. See https://bugzilla.redhat.com/show_bug.cgi?id=734191
Signed-off-by: David Zeuthen <davidz@redhat.com>
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Show an error message so that it's possible to determine why the
HDIO_GET_IDENTITY ioctl has failed.
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The major benefit here, is that we get the ATAPI device serial
number. With SCSI ID we didn't get this since it's not part of the
SCSI INQUIRY command. Specifically this means that we get symlinks to
empty optical drives, e.g.
/dev/disk/by-id/ata-VBOX_CD-ROM_VB2-01700376
which we didn't get earlier. So this is a major win.
Also make ata_id work on CD-ROM devices when using /dev/bsg nodes so
this works on both the scsi_device as well as the block device. We do
this, basically, by issuing the ATA IDENTIFY PACKET DEVICE command
instead of the ATA IDENTIFY command. We also use 16-byte pass-through
ATA passthrough instead of 12-byte passthrough to avoid clashing with
the MMC BLANK command.
This means that we get this output
# udevadm info -q all -p /sys/devices/pci0000:00/0000:00:01.1/host3/target3:0:0/3:0:0:0
P: /devices/pci0000:00/0000:00:01.1/host3/target3:0:0/3:0:0:0
E: UDEV_LOG=3
E: DEVPATH=/devices/pci0000:00/0000:00:01.1/host3/target3:0:0/3:0:0:0
E: DEVTYPE=scsi_device
E: DRIVER=sr
E: MODALIAS=scsi:t-0x05
E: SUBSYSTEM=scsi
E: ID_ATA=1
E: ID_TYPE=cd
E: ID_BUS=ata
E: ID_MODEL=VBOX_CD-ROM
E: ID_MODEL_ENC=VBOX\x20CD-ROM\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x 20\x20\x20\x20\x20\x20\x20
E: ID_REVISION=1.0
E: ID_SERIAL=VBOX_CD-ROM_VB2-01700376
E: ID_SERIAL_SHORT=VB2-01700376
instead of just
# udevadm info -q all -p /sys/devices/pci0000:00/0000:00:01.1/host3/target3:0:0/3:0:0:0
P: /devices/pci0000:00/0000:00:01.1/host3/target3:0:0/3:0:0:0
E: UDEV_LOG=3
E: DEVPATH=/devices/pci0000:00/0000:00:01.1/host3/target3:0:0/3:0:0:0
E: DEVTYPE=scsi_device
E: DRIVER=sr
E: MODALIAS=scsi:t-0x05
E: SUBSYSTEM=scsi
E: ID_SCSI=1
E: ID_VENDOR=VBOX
E: ID_VENDOR_ENC=VBOX\x20\x20\x20\x20
E: ID_MODEL=CD-ROM
E: ID_MODEL_ENC=CD-ROM\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
E: ID_REVISION=1.0
E: ID_TYPE=cd
Signed-off-by: David Zeuthen <davidz@redhat.com>
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This makes it possible to use /dev/bsg/* nodes for ata_id:
# /lib/udev/ata_id --export /dev/bsg/0\:0\:0\:0
ID_ATA=1
ID_TYPE=disk
ID_BUS=ata
ID_MODEL=INTEL_SSDSA2MH080G1GC
ID_MODEL_ENC=INTEL\x20SSDSA2MH080G1GC\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_REVISION=045C8802
[...]
This means that our cd-rom detection as per commit
http://git.kernel.org/?p=linux/hotplug/udev.git;a=commit;h=160b069c25690bfb0c785994c7c3710289179107
needs to be reworked since we can't just use the CDROM_GET_CAPABILITY
ioctl on a /dev/bsg node (which is a character device). We do this by
just sending the SCSI INQUIRY command and checking the type (CD-ROM's
are all type 0x05 and disks are type 0x00) before we issue the ATA
IDENTIFY command through the SCSI command ATA PASS_THROUGH (12).
(Yes, it's a bit perverse how we have to tunnel our ATA commands
through a SCSI command but that's how Linux currently work.)
We still support for SG_IO version 3 (we fail back if version 4 fails
with EINVAL) because testing reveals that some drivers (such as
mpt2sas) still only support version 3 on the block nodes.
Signed-off-by: David Zeuthen <davidz@redhat.com>
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Some SCSI devices use the same WWN and have a WWN extension that we
need to take into account when creating the /dev/disk/by-id/wwn
symlinks. Thus, introduce ID_WWN_WITH_EXTENSION. This property will
contain either the WWN (if no extension is present) or the WWN with
the vendor extension appended.
Example:
# /lib/udev/ata_id/ata_id --export /dev/sda |grep WWN
ID_WWN=0x5001517387d61905
ID_WWN_WITH_EXTENSION=0x5001517387d61905
# /lib/udev/scsi_id --whitelisted --export -d /dev/sdb |grep WWN
ID_WWN=0x600508b400105df7
ID_WWN_VENDOR_EXTENSION=0x0000e00000d80000
ID_WWN_WITH_EXTENSION=0x600508b400105df70000e00000d80000
# /lib/udev/scsi_id --whitelisted --export -d /dev/sdc |grep WWN
ID_WWN=0x600508b400105df7
ID_WWN_VENDOR_EXTENSION=0x0000e00000db0000
ID_WWN_WITH_EXTENSION=0x600508b400105df70000e00000db0000
Signed-off-by: David Zeuthen <davidz@redhat.com>
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Some drives are reported to erase CD-RW media with the ATA
commands we send.
Thanks to Christoph Stritt <phoenix@jobob.com> for his debugging.
Original bug is here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=556635
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Instead of using multiple recursive Makefile.am files, use a single
Makefile.am that sets and builds all the basic suite of libraries and
binaries for udev. This reduces the number of files in the source tree, and
also reduces drastically the build time when using parallel-make.
With this setup, all the compile steps will be executed in parallel, and
just the linking stage will be (partially) serialised on the libraries
creation.
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ID_SERIAL is the full serial number used for the links, ID_SERIAL_SHORT
is the device serial number.
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These are mostly dummy man pages, without real content, some even
outdated. None of these tools are part of any offered public interface,
and they should not pretend to be by offering a man page.
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So ID_MODEL and ID_VENDOR are pretty useful keys. However since we fix
them up (removing leading/trailing whitespace, converts spaces to
underscores) for use in device naming etc. we also force these fixups on
the desktop shell. And this looks pretty ugly.
The attached patch introduces the ID_MODEL_ENC and ID_VENDOR_ENC keys
that contains the encoded version of the raw strings obtained. It's
pretty similar in spirit to ID_FS_LABEL and its cousin ID_FS_LABEL_ENC.
With this patch a desktop shell can fix up these strings as it sees fit.
Note that some fixup is still needed though, for example
# /lib/udev/ata_id --export /dev/sda |grep ID_MODEL
ID_MODEL=INTEL_SSDSA2MH080G1GC
ID_MODEL_ENC=INTEL\x20SSDSA2MH080G1GC\x20\x20\x20\x20\x20\x20\x20\x20
\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
Note the trailing and leading whitespace. Anyway with the attached patch
the desktop shell should be able to display "INTEL SSDSA2MH080G1GC"
rather than "INTEL_SSDSA2MH080G1GC" to the user.
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[...] running the command
`make maintainer-clean' should not delete `configure' even if
`configure' can be remade using a rule in the Makefile. More
generally, `make maintainer-clean' should not delete anything that
needs to exist in order to run `configure' and then begin to build
the program. This is the only exception; `maintainer-clean' should
delete everything else that can be rebuilt.
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"Hello world!" linked against libselinux parses /proc/mounts and
whatever else on startup, even when the lib is not needed at all.
Not funny! Get rid of that thing where it's not absolutely needed.
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Thanks to David Härdeman for pointing it out.
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Thanks to:
Henrique de Moraes Holschuh <hmh@debian.org>
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Signed-off-by: Kay Sievers <kay.sievers@suse.de>
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We never used any of the libsysfs convenience features. Here we replace
it completely with 300 lines of code, which are much simpler and a bit
faster cause udev(d) does not open any syfs file for a simple event which
does not need any parent device information.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
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Signed-off-by: Kay Sievers <kay.sievers@suse.de>
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