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On Thu, Oct 29, 2009 at 19:15, Christian P. Schmidt <schmidt@digadd.de> wrote:
> After the getty replaces itself with login the pam module pam_mount
> calls mount. This in turn determines that the partition to be mounted is
> LUKS encrypted, and calls cryptsetup. Cryptsetup receives the password,
> unlocks the partition, and calls udevadm settle in order to avoid some
> problems in interaction with LVM.
>
> udevadm settle never returns.
>
> The problem here is that SIGUSR1 and SIGALRM are both blocked in oldmask
> already, and never reach udevadm. No care is ever taken to ensure those
> signals are not blocked.
These retry loops are required where create_path() could race with
delete_path(). But only the main udevd process writes to the queue,
so no races will happen here.
Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Its use breaks too many things which expect to be run from independent
later rules, and is an idication that something needs to be fixed
properly instead.
On Wed, Oct 7, 2009 at 21:46, Alan Jenkins <sourcejedi.lkml@googlemail.com> wrote:
> Udev would have avoided the race prior to
>
> 82c785e "udevd: remove check for dev_t, DEVPATH_OLD takes care of that"
>
> (the "check" removed here used to serialize events based on the device
> major:minor number).
On Wed, Oct 7, 2009 at 22:31, Michael Guntsche <mike@it-loops.com> wrote:
> add /module/8250_pnp (module)
> remove /devices/platform/serial8250/tty/ttyS0 (tty)
> add /devices/pnp0/00:05/tty/ttyS0 (tty)
Commit f61e72d8 made raw USB printers accessible for the lp group. However,
chmoding them to 0660 is a bit over-zealous, since by default raw USB devices
are world-readable. Not being so breaks lsusb unnecessarily. Now set
permissions to 0664.
On Wed, Sep 23, 2009 at 23:11, Matthias Schwarzott <zzam@gentoo.org> wrote:
> It is about ioctl failures on amd64:
> http://bugs.gentoo.org/show_bug.cgi?id=286041
>
> A bad parameter type to an ioctl() call causes udev-146 to generate "error
> getting buffer for inotify" messages in syslog. The offending code is
> roughly:
>
> ssize_t nbytes, pos;
> // ...
> ioctl(fd, FIONREAD, &nbytes);
>
> where ssize_t is 64 bits on amd64, but the kernel code for FIONREAD (at least
> through gentoo-sources-2.6.31) uses type int:
>
> p = (void __user *) arg;
> switch (cmd) {
> case FIONREAD:
> // ...
> ret = put_user(send_len, (int __user *) p);
>
> so the upper 32 bits of "nbytes" are left uninitialized, and the subsequent
> malloc(nbytes) fails unless those 32 bits happen to be zero (or the system has
> a LOT of memory).
The previous patch was almost, but not quite, correct. Rather than
restoring the signal mask it actually tried to make an even more
restrictive signal mask (had SIGALRM been blocked when udevd started,
anyway).
Fix it harder.
Signed-off-by: Scott James Remnant <scott@ubuntu.com>
ID_CDROM_MEDIA_SESSION_LAST_OFFSET is not set for CDs with only a single
session (i. e. for the vast majority of CDs out there). The previous rules ran
blkid with invalid arguments for these, causing CD detection to fail in
DK-disks and gvfs.
Now check whether we actually have ID_CDROM_MEDIA_SESSION_LAST_OFFSET, and if
not, call blkid without -O for specifying the offset.
Many thanks to Maxim Levitsky for tracking this down!
https://launchpad.net/bugs/431055
On 8/29/09, Florian Zumbiehl <florz@florz.de> wrote:
> Could it happen that > util_create_path() and util_delete_path()
> do run in parallel for > the same directory? After all, util_create_path()
> does handle > the case where creation of the directory happens in parallel
> to it running, so it doesn't seem all that unlikely to me ...
With well defined and kernel-supplied node names, we no longer need
to support a possible stack of conflicting symlinks and node names.
Only symlinks with identical names can be claimed by multiple devices.
This shrinks the former /dev/.udev/names/ significantly.
Also the /dev/{block,char}/MAJ:MIN" links are excluded from the name
stack - they are unique and can not conflict.
Unfortunately KEY_COFFEE is the canonical name in linux/input.h, and the more
sensible KEY_SCREENLOCK is an alias. Manually override this particular case,
since it's better to have "screenlock" in keymaps.
However, we still keep the automatic filtering for the general case, to avoid
introducing this problem again when input.h changes.
More than one key name was mapped to the same key, due to linux/input.h
defining some aliases (in particular, KEY_HANGUEL, KEY_SCREENLOCK,
KEY_MIN_INTERESTING). These caused hash table collisions.
Changed the generation of the tables to ignore these aliases, and updated all
keymaps to use the canonical name.
This was detected by llvm-clang-analyzer. Thanks to Lennart Poettering for
doing these checks and pointing this out!
https://launchpad.net/bugs/426647
I'm not sure how likely it is for UTIL_PATH_SIZE to have an odd value
(maybe it has right now? :-), but I guess making this universally correct
doesn't hurt ...
<zzam> kay: ping I found out why udev-145 fails on some
systems with kernel 2.6.25 and 2.6.26
<zzam> kay: it is because glibc was compiled against linux-headers-2.6.27
or newer and issues signalfd4 syscall which was introduced in
kernel 2.6.27 and not older signalfd syscall
extras/modem-modeswitch/61-mobile-action.rules: Match on device class/subclass
"00" as well, some devices like the Vodafone K3565-Z have that.
https://launchpad.net/bugs/281335
