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The attached patch makes it possible to pass a session keyring through to the
process spawned by call_usermodehelper(). This allows patch 3/3 to pass an
authorisation key through to /sbin/request-key, thus permitting better access
controls when doing just-in-time key creation.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Move hotplug_path[] out of kmod.[ch] to kobject_uevent.[ch] where
it belongs now. At some time in the future we should fix the remaining bad
hotplug calls (no SEQNUM, no netlink uevent):
./drivers/input/input.c (no DEVPATH on some hotplug events!)
./drivers/pnp/pnpbios/core.c
./drivers/s390/crypto/z90main.c
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
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Currently most driver events are not sent out when using initramfs as
driver_init() (which triggers the events) is called before init_workqueues.
This patch rearranges the init calls so that the hotplug event queue is
enabled prior to calling driver_init(), hence we're getting all hotplug
events again.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: Andy Whitcroft <apw@shadowen.org>
Both modprobe_path and hotplug_path are arbitrarily sized at 256 bytes and
that size is also expressed directly in the sysctl code. It seems
reasonable to define a standard length and use that for consitancy. This
patch introduces the constant KMOD_PATH_LEN and uses that.
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The reworked firmware loader in the DVB patches needs the fix to the
call_usermodehelper() return value.
From: Rusty Russell <rusty@rustcorp.com.au>
MODULE_ALIAS_BLOCK() and MODULE_ALIAS_CHAR() define aliases of form
"XXX-<major>-<minor>", so we should probe for modules using this form.
Unfortunately in 2.4, block aliases were "XXX-<major>" and char aliases
were of both forms.
Ideally, all modules would now be using MODULE_ALIAS() macros to define
their aliases, and the old configuration files wouldn't matter as much.
Unfortunately, this hasn't happened, so we make request_module() return the
exit status of modprobe, and then do fallback when probing for char and
block devices.
(Kudos to Chris Wright, I stole his kernel_thread flags).
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try_then_request_module() does what crypto/autoload.c is doing, so
replace it. Fix try_then_request_module(), too (thanks James).
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This is what a lot of the callers really wanted.
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Urban Widmark points out that modprobe calls system() in many
configurations, which drops privs since request_module() doesn't
set ruid and rguid.
This gets rid of exec_usermodehelper and makes everyone use
call_usermodehelper, which has a new "wait" flag.
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This is an implementation of the in-kernel module loader extending
the try_inc_mod_count() primitive and making its use compulsory.
This has the benifit of simplicity, and similarity to the existing
scheme. To reduce the cost of the constant increments and
decrements, reference counters are lockless and per-cpu.
Eliminated (coming in following patches):
o Modversions
o Module parameters
o kallsyms
o EXPORT_SYMBOL_GPL and MODULE_LICENCE checks
o DEVICE_TABLE support.
New features:
o Typesafe symbol_get/symbol_put
o Single "insert this module" syscall interface allows trivial userspace.
o Raceless loading and unloading
You will need the trivial replacement module utilities from:
http://ozlabs.org/~rusty/module-init-tools-0.6.tar.gz
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