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Those documents describe a kAPI. So, add to the driver-api
book.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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The two files there describes a Kernel API feature, used to
support early userspace stuff. Prepare for moving them to
the kernel API book by converting to ReST format.
The conversion itself was quite trivial: just add/mark a few
titles as such, add a literal block markup, add a table markup
and a few blank lines, in order to make Sphinx to properly parse it.
At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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The documentation for gen_init_cpio mentions to invoke the tool with
'--help' flag for showing directive file format information. However,
only the short name variant '-h' is implemented. Invoking the tool with
the long name returns invalid option message and sets an error code.
Signed-off-by: Andrzej Bednarski <andrzej.bednarski@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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scripts/gen_initramfs_list.sh is only invoked from usr/Makefile.
Move it so that all tools to create initramfs are self-contained
in the usr/ directory.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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As ftp.kernel.org is closed [0], this commit fixes dead URLs in
documents to use www.kernel.org instead.
[0] https://www.kernel.org/shutting-down-ftp-services.html
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Rob Landley <rob@landley.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Corrected the swapped characters in the word arugemnt to argument.
Signed-off-by: Stefan Huber <steffhip@googlemail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Remove BitKeeper from dontdiff. Point to the klibc git repository
instead of old BitKeeper ones.
Signed-off-by: Cyril Brulebois <cyril.brulebois@kerlabs.com>
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
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initrd/initramfs/ramdisk docs:
- fix typos/spellos/grammar
- clarify RAM disk config location
- correct cpio option
Acked-by: Bryan O'Sullivan <bos@serpentine.com>
Acked-by: Rob Landley <rob@landley.net>
Cc: Werner Almesberger <werner@almesberger.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
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This patch makes several tweaks so that an initramfs image can be
completely created by an unprivileged user. It should maintain
compatibility with previous initramfs early userspace cpio/image creation
and it updates documentation.
There are a few very important tweaks:
CONFIG_INITRAMFS_SOURCE is now either a single cpio archive that is
directly used or a list of directories and files for building a cpio
archive for the initramfs image. Making the cpio archive listable in
CONFIG_INITRAMFS_SOURCE makes the cpio step more official and automated so
that it doesn't have to be copied by hand to usr/initramfs_data.cpio (I
think this was broken anyway and would be overwritten). The alternative
list of directories *and* files means that files can be install in a "root"
directory and device-special files can be listed in a file list.
CONFIG_ROOT_UID and CONFIG_ROOT_GID are now available for doing simple
user/group ID translation. That means that user ID 500, group ID 500 can
create all the files in the "root" directory, but that they can all be
owned by user ID 0, group ID 0 in the cpio image.
Various documentation updates to pull it all together.
Removal of old cruft that was unused/misleading.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This patch makes gen_init_cpio more complete by adding symlink, pipe and
socket support. It updates scripts/gen_initramfs_list.sh to support the
new types. The patch applies to the recent mm series that already have the
updated gen_init_cpio and gen_initramfs_list.sh.
From: William Lee Irwin III <wli@holomorphy.com>
The rest of gen_init_cpio.c seems to cast the result of strlen() to handle
this situation, so this patch follows suit while killing off size_t -related
printk() warnings.
Signed-off-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: Olaf Hering <olh@suse.de>
initramfs can not be used in current 2.6 kernels, the files will never be
executed because prepare_namespace doesn't care about them. The only way to
workaround that limitation is a root=0:0 cmdline option to force rootfs as
root filesystem. This will break further booting because rootfs is not the
final root filesystem.
This patch checks for the presence of /init which comes from the cpio archive
(and thats the only way to store files into the rootfs). This binary/script
has to do all the work of prepare_namespace().
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