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* magic.h: move some FS magic numbers into magic.hMuthu Kumar2012-03-231-6/+12
| | | | | | | | | | | - Move open-coded filesystem magic numbers into magic.h - Rearrange magic.h so that the filesystem-related constants are grouped together. Signed-off-by: Muthukumar R <muthur@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: initial qnx6fs additionKai Bankett2012-03-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | Adds support for qnx6fs readonly support to the linux kernel. * Mount option The option mmi_fs can be used to mount Harman Becker/Audi MMI 3G HDD qnx6fs filesystems. * Documentation A high level filesystem stucture description can be found in the Documentation/filesystems directory. (qnx6.txt) * Additional features - Active (stable) superblock selection - Superblock checksum check (enforced) - Supports mount of qnx6 filesystems with to host different endianess - Automatic endianess detection - Longfilename support (with non-enfocing crc check) - All blocksizes (512, 1024, 2048 and 4096 supported) Signed-off-by: Kai Bankett <chaosman@ontika.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* minix: describe usage of different magic numbersSami Kerola2011-11-021-5/+5
| | | | | | | | | One can get this information from minix/inode.c, but adding the explanations at the definition sites is more appropriate. Signed-off-by: Sami Kerola <kerolasa@iki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2011-03-181-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: move NILFS_SUPER_MAGIC to linux/magic.h nilfs2: get rid of nilfs_sb_info structure nilfs2: use sb instance instead of nilfs_sb_info struct nilfs2: get rid of sc_sbi back pointer nilfs2: move log writer onto nilfs object nilfs2: move next generation counter into nilfs object nilfs2: move s_inode_lock and s_dirty_files into nilfs object nilfs2: move parameters on nilfs_sb_info into nilfs object nilfs2: move mount options to nilfs object nilfs2: record used amount of each checkpoint in checkpoint list nilfs2: optimize rec_len functions nilfs2: append blocksize info to warnings during loading super blocks nilfs2: add compat ioctl nilfs2: implement FS_IOC_GETFLAGS/SETFLAGS/GETVERSION nilfs2: tighten restrictions on inode flags nilfs2: mark S_NOATIME on inodes only if NOATIME attribute is set nilfs2: use common file attribute macros nilfs2: add free entries count only if clear bit operation succeeded nilfs2: decrement inodes count only if raw inode was successfully deleted
| * nilfs2: move NILFS_SUPER_MAGIC to linux/magic.hJiro SEKIBA2011-03-101-0/+1
| | | | | | | | | | | | | | | | move NILFS_SUPER_MAGIC macro to linux/magic.h from linux/nilfs2_fs.h in the same manner as other filesystem magic number defined in the file. Signed-off-by: Jiro SEKIBA <jir@unicus.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
* | Pull pstorev4 into release branchTony Luck2011-03-161-0/+1
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| * pstore: new filesystem interface to platform persistent storageTony Luck2010-12-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | Some platforms have a small amount of non-volatile storage that can be used to store information useful to diagnose the cause of a system crash. This is the generic part of a file system interface that presents information from the crash as a series of files in /dev/pstore. Once the information has been seen, the underlying storage is freed by deleting the files. Signed-off-by: Tony Luck <tony.luck@intel.com>
* | ecryptfs: moved ECRYPTFS_SUPER_MAGIC definition to linux/magic.hRoberto Sassu2011-01-171-0/+1
|/ | | | | | | | The definition of ECRYPTFS_SUPER_MAGIC has been moved to the include file 'linux/magic.h' to become available to other kernel subsystems. Signed-off-by: Roberto Sassu <roberto.sassu@polito.it> Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
* 9p: Use V9FS_MAGIC in statfsM. Mohan Kumar2010-10-281-0/+1
| | | | | | | | | | Use V9FS_MAGIC as the file system type while filling kernel statfs strucutre instead of using host file system magic number. Also move the definition of V9FS_MAGIC from v9fs.h to standard magic.h file. Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
* switch inotify_user to anon_inodeAl Viro2010-02-191-1/+0
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ramfs: move RAMFS_MAGIC to include/linux/magic.hmaximilian attems2009-09-231-0/+1
| | | | | | | | | initramfs userspace likes to use this magic number. Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: maximilian attems <max@stro.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Move magic numbers into magic.hNick Black2009-09-231-0/+5
| | | | | | | | | | | | Move various magic-number definitions into magic.h. Signed-off-by: Nick Black <dank@qemfd.net> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* linux/magic.h: move cramfs magic out of cramfs_fs.hMike Frysinger2009-06-111-0/+2
| | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org> CC: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* SELinux: move SELINUX_MAGIC into magic.hEric Paris2009-05-191-0/+1
| | | | | | | | | The selinuxfs superblock magic is used inside the IMA code, but is being defined in two places and could someday get out of sync. This patch moves the declaration into magic.h so it is only done once. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* Merge branch 'x86/mm' into core/percpuIngo Molnar2009-01-211-0/+2
|\ | | | | | | | | Conflicts: arch/x86/mm/fault.c
| * btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h>Qinghuang Feng2009-01-151-0/+2
| | | | | | | | | | | | | | | | | | | | Use the standard magic.h for btrfs and squashfs. Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'core/percpu' into stackprotectorIngo Molnar2009-01-181-0/+1
|\ \ | |/ | | | | | | | | | | | | | | | | Conflicts: arch/x86/include/asm/pda.h arch/x86/include/asm/system.h Also, moved include/asm-x86/stackprotector.h to arch/x86/include/asm. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * xen: add xenfs to allow usermode <-> Xen interactionAlex Zeffertt2009-01-081-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The xenfs filesystem exports various interfaces to usermode. Initially this exports a file to allow usermode to interact with xenbus/xenstore. Traditionally this appeared in /proc/xen. Rather than extending procfs, this patch adds a backward-compat mountpoint on /proc/xen, and provides a xenfs filesystem which can be mounted there. Signed-off-by: Alex Zeffertt <alex.zeffertt@eu.citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'linus' into stackprotectorIngo Molnar2008-10-151-0/+4
|\ \ | |/ | | | | | | | | Conflicts: arch/x86/kernel/Makefile include/asm-x86/pda.h
| * integrity: special fs magicMimi Zohar2008-10-131-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Discussion on the mailing list questioned the use of these magic values in userspace, concluding these values are already exported to userspace via statfs and their correct/incorrect usage is left up to the userspace application. - Move special fs magic number definitions to magic.h - Add magic.h include Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Reviewed-by: James Morris <jmorris@namei.org> Signed-off-by: James Morris <jmorris@namei.org>
* | stackprotector: use canary at end of stack to indicate overruns at oops timeEric Sandeen2008-05-261-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Updated with a common max-stack-used checker that knows about the canary, as suggested by Joe Perches) Use a canary at the end of the stack to clearly indicate at oops time whether the stack has ever overflowed. This is a very simple implementation with a couple of drawbacks: 1) a thread may legitimately use exactly up to the last word on the stack -- but the chances of doing this and then oopsing later seem slim 2) it's possible that the stack usage isn't dense enough that the canary location could get skipped over -- but the worst that happens is that we don't flag the overrun -- though this happens fairly often in my testing :( With the code in place, an intentionally-bloated stack oops might do: BUG: unable to handle kernel paging request at ffff8103f84cc680 IP: [<ffffffff810253df>] update_curr+0x9a/0xa8 PGD 8063 PUD 0 Thread overran stack or stack corrupted Oops: 0000 [1] SMP CPU 0 ... ... unless the stack overrun is so bad that it corrupts some other thread. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Task Control Groups: basic task cgroup frameworkPaul Menage2007-10-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Generic Process Control Groups -------------------------- There have recently been various proposals floating around for resource management/accounting and other task grouping subsystems in the kernel, including ResGroups, User BeanCounters, NSProxy cgroups, and others. These all need the basic abstraction of being able to group together multiple processes in an aggregate, in order to track/limit the resources permitted to those processes, or control other behaviour of the processes, and all implement this grouping in different ways. This patchset provides a framework for tracking and grouping processes into arbitrary "cgroups" and assigning arbitrary state to those groupings, in order to control the behaviour of the cgroup as an aggregate. The intention is that the various resource management and virtualization/cgroup efforts can also become task cgroup clients, with the result that: - the userspace APIs are (somewhat) normalised - it's easier to test e.g. the ResGroups CPU controller in conjunction with the BeanCounters memory controller, or use either of them as the resource-control portion of a virtual server system. - the additional kernel footprint of any of the competing resource management systems is substantially reduced, since it doesn't need to provide process grouping/containment, hence improving their chances of getting into the kernel This patch: Add the main task cgroups framework - the cgroup filesystem, and the basic structures for tracking membership and associating subsystem state objects to tasks. Signed-off-by: Paul Menage <menage@google.com> Cc: Serge E. Hallyn <serue@us.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Dave Hansen <haveblue@us.ibm.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Paul Jackson <pj@sgi.com> Cc: Kirill Korotaev <dev@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* change inotifyfs magic as the same magic is used for futexfsAndrey Mirkin2007-10-171-0/+3
| | | | | | | | | | | Right now futexfs and inotifyfs have one magic 0xBAD1DEA, that looks a little bit confusing. Use 0xBAD1DEA as magic for futexfs and 0x2BAD1DEA as magic for inotifyfs. Signed-off-by: Andrey Mirkin <major@openvz.org> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* KVM: Remove kvmfs in favor of the anonymous inodes sourceAvi Kivity2007-07-161-1/+0
| | | | | | | | kvm uses a pseudo filesystem, kvmfs, to generate inodes, a job that the new anonymous inodes source does much better. Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
* signal/timer/event fds: anonymous inode sourceDavide Libenzi2007-05-111-0/+1
| | | | | | | | | | | | | This patch add an anonymous inode source, to be used for files that need and inode only in order to create a file*. We do not care of having an inode for each file, and we do not even care of having different names in the associated dentries (dentry names will be same for classes of file*). This allow code reuse, and will be used by epoll, signalfd and timerfd (and whatever else there'll be). Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* KVM: Move kvmfs magic number to <linux/magic.h>Andrew Morton2007-03-041-0/+1
| | | | | | | | Use the standard magic.h for kvmfs. Cc: Avi Kivity <avi@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
* [PATCH] Minix V3 supportAndries Brouwer2007-02-121-0/+1
| | | | | | | | | | | | | | | | | This morning I needed to read a Minix V3 filesystem, but unfortunately my 2.6.19 did not support that, and neither did the downloaded 2.6.20rc4. Fortunately, google told me that Daniel Aragones had already done the work, patch found at http://www.terra.es/personal2/danarag/ Unfortunaly, looking at the patch was painful to my eyes, so I polished it a bit before applying. The resulting kernel boots, and reads the filesystem it needed to read. Signed-off-by: Daniel Aragones <danarag@gmail.com> Signed-off-by: Andries Brouwer <aeb@cwi.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Add AFS_SUPER_MAGIC to magic.hAdam Megacz2007-01-051-0/+1
| | | | | | | | | | | | | | | | Jeffrey Altman, one of the gatekeepers of OpenAFS (the open source project which inherited the Transarc/IBM AFS codebase) has requested that the magic number 0x5346414F (little endian 'OAFS') be allocated for the f_type field of the fsinfo structure on Linux: https://lists.openafs.org/pipermail/openafs-info/2006-December/024829.html Add it to include/linux/magic.h, mostly as a way of publishing this number and ensuring that no other filesystem accidentally uses it. Cc: Jeffrey Altman <jaltman@secure-endpoints.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ext4: enable building of ext4Mingming Cao2006-10-111-0/+1
| | | | | | | | | | | Originally part of a patch from Mingming Cao and Randy Dunlap. Reorganized by Shaggy. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Mingming Cao<cmm@us.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Move several *_SUPER_MAGIC symbols to include/linux/magic.h.Jeff Garzik2006-09-241-0/+37
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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