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On Tue, Feb 24, 2004 at 11:50:52PM +0100, Kay Sievers wrote:
> Here is the first step towards a safer string handling.
> More will follow, but for now only the easy ones :)
>
> Thanks to all who pointed this out. strncat() isn't a nice function. We
> all should remember that the destination string is not terminated if the
> given lenght is shorter than the strlen of the source string.
>
> And shame on the various implementers of strfieldcat() I found in the
> unapplied patches on this list, it's not really better than strncpy()
> and hides the real problem.
Hmm, bk didn't checked in one file, maybe I edited it again as root.
Nevermind, here is the more complete version.
I was on the train for 5 hours today and the TODO is almost empty :)
So, at least four people wanted this feature, then here is a actual
working patch.
We may specify now in udev.conf:
udev_rules="/etc/udev/"
and udev will scan the whole directory for files ending with *.rules,
sort it in lexical order and create our rule list from all of the files.
A plain given file will still work and the same applies to the *.permissions.
I sort the files in our usual linked list, cause klibc has no scandir().
Here we get a very dumb getpwnam() and getgrnam() for klibc to
stop the confusion of not handling textual id's if klibc is used.
If used with initrd we just need to copy the /etc/passwd and /etc/group
file and all should work well.
I dualboot between 2.4.x and 2.6.x right now, and although I
want udev to start up when 2.6 is booting, I don't want it to try when
2.4.x is booting.
This is a small patch to not start up udev if sysfs is not
mounted.
Here we change the magic callout part number selector to the new
atribute syntax. The syntax to select the second part of the callout string:
'%2c' is now '%c{2}'
I think it's more clear and we no longer misuse the length argument.
The old syntax is still supported, but we should remove it some
time in the future.
Here we switch the configs and man pages to the new attribute syntax.
Also the 'partition trick' is mentioned in udev.8
I think it's more clear visible now, that inside the brackets are user
supplied values used and not some magic keys handled:
'SYSFS_dev' is now 'SYSFS{dev}'
The old syntax is still supported.
Here is the first try to create all partitons of a blockdevice, since
removable media devices may need to acces the expected partition to
revalidate the media.
It uses the attribute syntax introduced with the last %s{file} patch.
I'm using this with my multi-slot-flash-card-reader:
SYSFS{model}="USB Storage-SMC ", NAME{all_partitions}="smartmedia"
SYSFS{model}="USB Storage-CFC ", NAME{all_partitions}="compactflash"
SYSFS{model}="USB Storage-MSC ", NAME{all_partitions}="memorystick"
SYSFS{model}="USB Storage-MMC ", NAME{all_partitions}="multimedia"
and I get:
tree /udev/
/udev/
|-- memorystick
|-- memorystick1
|-- memorystick10
|-- memorystick11
|-- memorystick12
|-- memorystick13
|-- memorystick14
|-- memorystick15
|-- memorystick2
|-- memorystick3
|-- memorystick4
|-- memorystick5
|-- memorystick6
|-- memorystick7
|-- memorystick8
|-- memorystick9
|-- multimedia
|-- multimedia1
|-- multimedia10
|-- multimedia11
|-- multimedia12
|-- multimedia13
|-- multimedia14
|-- multimedia15
|-- multimedia2
|-- multimedia3
|-- multimedia4
|-- multimedia5
|-- multimedia6
|-- multimedia7
|-- multimedia8
|-- multimedia9
...
If needed, we can make the number of partions to create
adjustable with the attribute?
On Sun, Feb 15, 2004 at 03:36:00AM +0100, Kay Sievers wrote:
>
> Since we have %s{file} it may be nice to allow SYSFS{file}.
> This patch allows:
>
> BUS="usb", SYSFS{idProduct}="a511", NAME="video%n"
>
> compared to the current:
>
> BUS="usb", SYSFS_idProduct="a511", NAME="video%n"
>
> The curent syntax is still supported.
> Looks a bit nicer and less hackish, I think.
Better patch with infrastructure to easily implement KEY{attribute}
for every other key. The first user is the SYSFS{file} key.
Both versions, brackets or underscore is supported for the attribute.
On Thu, Feb 12, 2004 at 05:34:57PM -0800, Greg KH wrote:
> On Tue, Feb 10, 2004 at 09:14:20AM +0100, Hannes Reinecke wrote:
> > Hi all,
> >
> > this patch makes the format for NAME and SYMLINK a bit more flexible:
> > I've added a new format specifier '%s{<SYSFS_var>}', which allows for
> > the value of any sysfs entry found for this device to be inserted.
> > Example (for our S/390 fcp adapter):
> >
> > BUS="ccw", SYSFS_devtype="1732/03", NAME="%k" \
> > SYMLINK="zfcp-%s{hba_id}-%s{wwpn}:%s{fcp_lun}"
> >
> > I know this could also be done with an external program, but having this
> > incorporated into udev makes life easier, especially if run from
> > initramfs. Plus it makes the rules easier to follow, as the result is
> > directly visible and need not to be looked up in some external program.
> >
> > Comments etc. welcome.
>
> Oops, sorry I missed this for the 017 release. I'll look at it tomorrow
> and get back to you. At first glance it looks like a good thing.
>
> Oh, you forgot to update the documentation, that's important to do if
> you want this change to make it in :)
I took a part of the code and made a version that uses already implemented
attribute finding logic.
The parsing of the format length '%3x' and the '%x{attribute}' is a fuction now,
maybe there are more possible users in the future.
I've also added the test to udev-test.pl.
incremental to udev-016/extras/multipath-0.0.16.3,
* add a GROUP_BY_SERIAL flag. This should be useful for
controlers that activate their spare paths on simple IO
submition with a penalty. The StorageWorks HW defaults to
this mode, even if the MULTIBUS mode is OK.
* remove unused sg_err.c
* big restructuring : split devinfo.c from main.c. Export :
* void basename (char *, char *);
* int get_serial (int, char *);
* int get_lun_strings (char *, char *, char *, char *);
* int get_evpd_wwid(char *, char *);
* long get_disk_size (char *);
Now we see clearly what is expected from an external package
like scsi_id.
* stop passing struct env as param
> Hello,
>
> incremental to udev-016/extras/multipath,
>
> * don't rely on the linux symlink in the udev/klibc dir since
> udev build doesn't use it anymore. This corrects build breakage
> * remove make_dm_node fn & call. Rely on udev for this.
>
> The first patch is to be applied.
> The second is conditioned by udev dealing correctly with devmap names.
>
> For this I can suggest a CALLOUT rule like this :
> KERNEL="dm-[0-9]*", PROGRAM="/tmp/name_devmap %M %m", NAME="%k",
> SYMLINK="%c"
>
> With name_devmap like :
> #!/bin/sh
> /usr/sbin/dmsetup ls|/bin/grep "$1, $2"|/usr/bin/awk '{print $1}'
>
ok I coded the suggested tool.
it works with the following rule :
KERNEL="dm-[0-9]*", PROGRAM="/sbin/devmap_name %M %m", NAME="%k", SYMLINK="%c"
I don't know if it's right to keep this tools packaged with multipath because
it's widely more general.
Maybe Joe should merge it in the device-mapper package or provide the
functionnality through dmsetup ?
