2006-06-08 22:12:45 -07:00
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[PATCH] uml: use DEFCONFIG_LIST to avoid reading host's config
This should make sure that, for UML, host's configuration files are not
considered, which avoids various pains to the user. Our dependency are such
that the obtained Kconfig will be valid and will lead to successful
compilation - however they cannot prevent an user from disabling any boot
device, and if an option is not set in the read .config (say
/boot/config-XXX), with make menuconfig ARCH=um, it is not set. This always
disables UBD and all console I/O channels, which leads to non-working UML
kernels, so this bothers users - especially now, since it will happen on
almost every machine (/boot/config-`uname -r` exists almost on every machine).
It can be workarounded with make defconfig ARCH=um, but it is non-obvious and
can be avoided, so please _do_ merge this patch.
Given the existence of options, it could be interesting to implement
(additionally) "option required" - with it, Kconfig will refuse reading a
.config file (from wherever it comes) if the given option is not set. With
this, one could mark with it the option characteristic of the given
architecture (it was an old proposal of Roman Zippel, when I pointed out our
problem):
config UML
option required
default y
However this should be further discussed:
*) for x86, it must support constructs like:
==arch/i386/Kconfig==
config 64BIT
option required
default n
where Kconfig must require that CONFIG_64BIT is disabled or not present in the
read .config.
*) do we want to do such checks only for the starting defconfig or also for
.config? Which leads to:
*) I may want to port a x86_64 .config to x86 and viceversa, or even among more
different archs. Should that be allowed, and in which measure (the user may
force skipping the check for a .config or it is only given a warning by
default)?
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: <kbuild-devel@lists.sourceforge.net>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-19 23:28:23 -07:00
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2006-06-08 22:12:45 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 01:55:51 -07:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 15:01:46 -08:00
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2005-04-16 15:20:36 -07:00
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2005-07-31 04:57:49 -04:00
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2005-04-16 15:20:36 -07:00
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[PATCH] BLOCK: Make it possible to disable the block layer [try #6]
Make it possible to disable the block layer. Not all embedded devices require
it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require
the block layer to be present.
This patch does the following:
(*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev
support.
(*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls
an item that uses the block layer. This includes:
(*) Block I/O tracing.
(*) Disk partition code.
(*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.
(*) The SCSI layer. As far as I can tell, even SCSI chardevs use the
block layer to do scheduling. Some drivers that use SCSI facilities -
such as USB storage - end up disabled indirectly from this.
(*) Various block-based device drivers, such as IDE and the old CDROM
drivers.
(*) MTD blockdev handling and FTL.
(*) JFFS - which uses set_bdev_super(), something it could avoid doing by
taking a leaf out of JFFS2's book.
(*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and
linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is,
however, still used in places, and so is still available.
(*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and
parts of linux/fs.h.
(*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.
(*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.
(*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK
is not enabled.
(*) fs/no-block.c is created to hold out-of-line stubs and things that are
required when CONFIG_BLOCK is not set:
(*) Default blockdev file operations (to give error ENODEV on opening).
(*) Makes some /proc changes:
(*) /proc/devices does not list any blockdevs.
(*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.
(*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.
(*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if
given command other than Q_SYNC or if a special device is specified.
(*) In init/do_mounts.c, no reference is made to the blockdev routines if
CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2.
(*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return
error ENOSYS by way of cond_syscall if so).
(*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if
CONFIG_BLOCK is not set, since they can't then happen.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30 20:45:40 +02:00
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2005-04-16 15:20:36 -07:00
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2006-01-15 02:40:08 +01:00
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2005-04-16 15:20:36 -07:00
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2006-10-02 02:18:19 -07:00
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2005-04-16 15:20:36 -07:00
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2006-07-14 00:24:40 -07:00
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2006-07-14 00:24:36 -07:00
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2006-07-14 00:24:41 -07:00
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2006-07-14 00:24:36 -07:00
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2006-10-02 02:18:14 -07:00
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2005-04-16 15:20:36 -07:00
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2005-05-11 10:52:45 +01:00
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2005-04-16 15:20:36 -07:00
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2006-01-06 00:19:28 -08:00
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2005-04-16 15:20:36 -07:00
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[PATCH] audit: path-based rules
In this implementation, audit registers inotify watches on the parent
directories of paths specified in audit rules. When audit's inotify
event handler is called, it updates any affected rules based on the
filesystem event. If the parent directory is renamed, removed, or its
filesystem is unmounted, audit removes all rules referencing that
inotify watch.
To keep things simple, this implementation limits location-based
auditing to the directory entries in an existing directory. Given
a path-based rule for /foo/bar/passwd, the following table applies:
passwd modified -- audit event logged
passwd replaced -- audit event logged, rules list updated
bar renamed -- rule removed
foo renamed -- untracked, meaning that the rule now applies to
the new location
Audit users typically want to have many rules referencing filesystem
objects, which can significantly impact filtering performance. This
patch also adds an inode-number-based rule hash to mitigate this
situation.
The patch is relative to the audit git tree:
http://kernel.org/git/?p=linux/kernel/git/viro/audit-current.git;a=summary
and uses the inotify kernel API:
http://lkml.org/lkml/2006/6/1/145
Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-04-07 16:55:56 -04:00
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2005-04-16 15:20:36 -07:00
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2006-09-30 23:27:25 -07:00
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2005-04-16 15:20:36 -07:00
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2005-07-27 11:45:11 -07:00
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2005-04-16 15:20:36 -07:00
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2006-03-23 19:56:55 +01:00
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2005-08-10 20:44:50 +02:00
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Move size optimization option outside of EMBEDDED menu, mark it EXPERIMENTAL
Also, disable on sparc64 - a number of people report breakage. Probably
a compiler bug, but it's quite possible that it tickles some latent
kernel problem too.
It still defaults to 'y' everywhere else (when enabled through
EXPERIMENTAL), and Dave Jones points out that Fedora (and RHEL4) has
been building with size optimizations for a long time on x86, x86-64,
ia64, s390, s390x, ppc32 and ppc64. So it is really only moderately
experimental, but the sparc64 breakage certainly shows that it can
trigger "issues".
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-14 18:52:21 -08:00
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2006-09-30 23:28:58 -07:00
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2006-09-30 23:28:13 -07:00
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2005-04-16 15:20:36 -07:00
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2006-09-16 12:15:53 -07:00
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2006-09-27 01:51:04 -07:00
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2006-09-30 23:28:13 -07:00
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2006-11-08 17:44:51 -08:00
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2006-09-27 01:51:04 -07:00
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2006-09-16 12:15:53 -07:00
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2006-11-08 17:44:51 -08:00
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2006-09-27 01:51:04 -07:00
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2006-11-08 17:44:51 -08:00
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2006-09-27 01:51:04 -07:00
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2006-11-08 17:44:51 -08:00
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2006-09-16 12:15:53 -07:00
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2005-04-16 15:20:36 -07:00
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2005-07-20 05:43:05 +02:00
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2005-04-16 15:20:36 -07:00
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2005-05-01 08:59:02 -07:00
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2005-11-16 11:27:07 -08:00
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2005-05-01 08:59:02 -07:00
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2005-05-01 08:59:01 -07:00
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2006-01-08 01:05:25 -08:00
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2005-04-16 15:20:36 -07:00
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2006-06-27 02:54:53 -07:00
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2005-04-16 15:20:36 -07:00
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2006-01-08 01:01:45 -08:00
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2006-06-30 01:55:45 -07:00
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2005-04-16 15:20:36 -07:00
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2006-09-16 12:15:53 -07:00
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2005-04-16 15:20:36 -07:00
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2006-01-08 01:01:45 -08:00
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2005-04-16 15:20:36 -07:00
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2005-12-26 23:04:02 +01:00
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2005-04-16 15:20:36 -07:00
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2005-11-04 08:43:35 +01:00
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