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2007-10-17security/ cleanupsAdrian Bunk11-143/+1
This patch contains the following cleanups that are now possible: - remove the unused security_operations->inode_xattr_getsuffix - remove the no longer used security_operations->unregister_security - remove some no longer required exit code - remove a bunch of no longer used exports Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: James Morris <jmorris@namei.org> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Implement file posix capabilitiesSerge E. Hallyn15-73/+418
Implement file posix capabilities. This allows programs to be given a subset of root's powers regardless of who runs them, without having to use setuid and giving the binary all of root's powers. This version works with Kaigai Kohei's userspace tools, found at http://www.kaigai.gr.jp/index.php. For more information on how to use this patch, Chris Friedhoff has posted a nice page at http://www.friedhoff.org/fscaps.html. Changelog: Nov 27: Incorporate fixes from Andrew Morton (security-introduce-file-caps-tweaks and security-introduce-file-caps-warning-fix) Fix Kconfig dependency. Fix change signaling behavior when file caps are not compiled in. Nov 13: Integrate comments from Alexey: Remove CONFIG_ ifdef from capability.h, and use %zd for printing a size_t. Nov 13: Fix endianness warnings by sparse as suggested by Alexey Dobriyan. Nov 09: Address warnings of unused variables at cap_bprm_set_security when file capabilities are disabled, and simultaneously clean up the code a little, by pulling the new code into a helper function. Nov 08: For pointers to required userspace tools and how to use them, see http://www.friedhoff.org/fscaps.html. Nov 07: Fix the calculation of the highest bit checked in check_cap_sanity(). Nov 07: Allow file caps to be enabled without CONFIG_SECURITY, since capabilities are the default. Hook cap_task_setscheduler when !CONFIG_SECURITY. Move capable(TASK_KILL) to end of cap_task_kill to reduce audit messages. Nov 05: Add secondary calls in selinux/hooks.c to task_setioprio and task_setscheduler so that selinux and capabilities with file cap support can be stacked. Sep 05: As Seth Arnold points out, uid checks are out of place for capability code. Sep 01: Define task_setscheduler, task_setioprio, cap_task_kill, and task_setnice to make sure a user cannot affect a process in which they called a program with some fscaps. One remaining question is the note under task_setscheduler: are we ok with CAP_SYS_NICE being sufficient to confine a process to a cpuset? It is a semantic change, as without fsccaps, attach_task doesn't allow CAP_SYS_NICE to override the uid equivalence check. But since it uses security_task_setscheduler, which elsewhere is used where CAP_SYS_NICE can be used to override the uid equivalence check, fixing it might be tough. task_setscheduler note: this also controls cpuset:attach_task. Are we ok with CAP_SYS_NICE being used to confine to a cpuset? task_setioprio task_setnice sys_setpriority uses this (through set_one_prio) for another process. Need same checks as setrlimit Aug 21: Updated secureexec implementation to reflect the fact that euid and uid might be the same and nonzero, but the process might still have elevated caps. Aug 15: Handle endianness of xattrs. Enforce capability version match between kernel and disk. Enforce that no bits beyond the known max capability are set, else return -EPERM. With this extra processing, it may be worth reconsidering doing all the work at bprm_set_security rather than d_instantiate. Aug 10: Always call getxattr at bprm_set_security, rather than caching it at d_instantiate. [morgan@kernel.org: file-caps clean up for linux/capability.h] [bunk@kernel.org: unexport cap_inode_killpriv] Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Andrew Morgan <morgan@kernel.org> Signed-off-by: Andrew Morgan <morgan@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17ifdef struct task_struct::securityAlexey Dobriyan2-1/+4
For those who don't care about CONFIG_SECURITY. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Casey Schaufler <casey@schaufler-ca.com> Cc: James Morris <jmorris@namei.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17security: Convert LSM into a static interfaceJames Morris11-1056/+1185
Convert LSM into a static interface, as the ability to unload a security module is not required by in-tree users and potentially complicates the overall security architecture. Needlessly exported LSM symbols have been unexported, to help reduce API abuse. Parameters for the capability and root_plug modules are now specified at boot. The SECURITY_FRAMEWORK_VERSION macro has also been removed. In a nutshell, there is no safe way to unload an LSM. The modular interface is thus unecessary and broken infrastructure. It is used only by out-of-tree modules, which are often binary-only, illegal, abusive of the API and dangerous, e.g. silently re-vectoring SELinux. [akpm@linux-foundation.org: cleanups] [akpm@linux-foundation.org: USB Kconfig fix] [randy.dunlap@oracle.com: fix LSM kernel-doc] Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Chris Wright <chrisw@sous-sol.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: "Serge E. Hallyn" <serue@us.ibm.com> Acked-by: Arjan van de Ven <arjan@infradead.org> Signed-off-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>
2007-10-17Add section IDs to Documentation/DocBook/filesystems.tmplRob Landley1-18/+18
Add recommended section IDs to Documentation/DocBook/filesystems.tmpl Signed-off-by: Rob Landley <rob@landley.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Fix "make htmldocs" build break.Rob Landley2-5/+4
Fix two htmldocs build breaks, introduced by moving include/linux/usb_gadget.h to include/linux/usb/gadget.h and combining resume.c and suspend.c into main.c in drivers/base/power. Signed-off-by: Rob Landley <rob@landley.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add Documentation/RCU/00-IndexRob Landley1-0/+22
Add Documentation/RCU/00-INDEX Signed-off-by: Rob Landley <rob@landley.net> Acked-by: Paul E. McKenney <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add recommended section IDs to deviceiobook.tmplRob Landley1-5/+5
Add recommended section ID tags to deviceiobook.tmpl Because otherwise the link #anchors in the html vary from build to build. Signed-off-by: Rob Landley <rob@landley.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17remap_file_pages: kernel-doc correctionsRandy Dunlap1-11/+13
Fix kernel-doc for sys_remap_file_pages() and add info to the 'prot' NOTE. Rename __prot parameter to prot. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Documentation/vm/slabinfo.c: clean up this codeWANG Cong1-12/+15
This patch does the following cleanups for Documentation/vm/slabinfo.c: - Fix two memory leaks; - Constify some char pointers; - Use snprintf instead of sprintf in case of buffer overflow; - Fix some indentations; - Other little improvements. Acked-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17vm.txt: document min_free_pages as critical for correctnessPavel Machek1-0/+6
min_free_pages is critical for correctness, document it as such. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17kdump: documentation cleanupsPavel Machek1-9/+3
This cleans up kdump documentation a bit. Plus I do not think we want to mention Linux trademark in _every_ file in documentation.... Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Update DMA-mapping documentationMatthew Wilcox1-20/+0
A couple of updates haven't considered whether the documentation makes sense as a whole any more. Three changes here: - Remove the reference to the "DAC Addressing for Address Space Hungry Devices" section which was deleted by Jan Beulich. - Remove the comment about DMA_24BIT_MASK which became obsolete when Tobias Klauser changed the code to actually use DMA_24BIT_MASK. - Remove the section "64-bit DMA and DAC cycle support" since it's fully covered above, and contains a reference to the section deleted by Jan. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add Documentation/power/00-INDEXRob Landley1-0/+34
Add Documentation/power/00-INDEX Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add entries to Documentation/powerpcRob Landley1-0/+4
Add two missing entries to Documentation/powerpc/00-INDEX Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add Documentation/{w1,w1/masters}/00-INDEXRob Landley4-2/+16
Two 00-INDEX files under Documentation/w1 Signed-off-by: Rob Landley <rob@landley.net> Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add missing entries to top level Documentation/00-INDEXRob Landley1-0/+16
Add missing entries to Documentation/00-INDEX Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Tweak Documentation/SM501.txtRob Landley1-0/+5
The existing Documentation/SM501.txt gives no clue what the chip is or does, so copy the description from Kconfig help text. Acked-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add reset_devices to the recommended parametersBernhard Walle1-2/+2
This patch adds the "reset_devices" option (that's used only by one device driver for now) to the recommended list of command line parameters for kdump. Meaning (Documentation/kernel-parameters.txt): reset_devices [KNL] Force drivers to reset the underlying device during initialization. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Haren Myneni <hbabu@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Express new ELF32 mechanisms in documentationBernhard Walle1-5/+7
This patch reflects the http://git.kernel.org/?p=linux/kernel/git/horms/kexec-tools-testing.git;a=commit;h=b9c3648e690ad0dad12389659673206213a09760 change in kexec-tools-testing also now in the kernel documentation. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Haren Myneni <hbabu@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Update help text for CONFIG_CRASH_DUMPRandy Dunlap2-18/+20
Fix typos in CONFIG_RELOCATABLE. Use tab + 2 spaces for indentation on all lines. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Bernhard Walle <bwalle@suse.de> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Haren Myneni <hbabu@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Express relocatability of kernel on x86_64 in documentationBernhard Walle1-29/+6
This patch adapts the Documentation/kdump/kdump.txt file to express the fact that the x86_64 kernel is now also relocatable. This makes i386 and x86_64 now behave the same, simplifying the documentation. Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Vivek Goyal <vgoyal@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Haren Myneni <hbabu@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Documentation: delete unreferenced xterm-linux.xpm fileRobert P. J. Day2-63/+0
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17kernel-doc: fix doc blocks and htmlRandy Dunlap1-9/+32
Johannes Berg reports (Thanks!) that &struct names are not highlighted in html output format when they are inside a DOC: block. DOC: blocks were not escaped thru xml_escape() like other kernel-doc comments were. Fixed that. However, that left a problem with <p> ($blankline_html) being processed thru xml_escape(), converting it to &lt;p&gt;, which isn't good for the generated html output (the <p> should remain unchanged), so this patch also introduces the notion of "local" kernel-doc meta-characters ('\\\\mnemonic:'), which are converted to html just before writing the stream to its output file. Please report any problems that you (anyone) see in "highlighting" in any output mode (text, man, html, xml). Also update copyright to include me. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add a 00-INDEX file to Documentation/telephony/Jesper Juhl1-0/+4
Add a 00-INDEX file to Documentation/telephony/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Rob Landley <rob@landley.net> Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add a 00-INDEX file to Documentation/sysctl/Jesper Juhl1-0/+16
Add a 00-INDEX file to Documentation/sysctl/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: Rob Landley <rob@landley.net> Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add a 00-INDEX file to Documentation/mips/Jesper Juhl1-0/+8
Add a 00-INDEX file to Documentation/mips/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: Rob Landley <rob@landley.net> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17doc: move vm/00-INDEX to Documentation/vmDavid Rientjes1-0/+0
Looks like the 00-INDEX file lost its parent directory in -rc6-mm1. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Add a missing 00-INDEX file for Documentation/vm/Jesper Juhl1-0/+20
This patch adds a 00-INDEX file to Documentation/vm/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Rob Landley <rob@landley.net> Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Documentation: add entries to filesystems/00-INDEX for several untracked filesDenis Cheng1-0/+6
Signed-off-by: Denis Cheng <crquan@gmail.com> Cc: Rob Landley <rob@landley.net> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Documentation/make/headers_install.txtRob Landley1-0/+46
Some documentation for "make headers_install". Signed-off-by: Rob Landley <rob@landley.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Clean up duplicate includes in Documentation/Jesper Juhl1-1/+0
This patch cleans up duplicate includes in Documentation/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17r/o bind mounts: create cleanup helper svc_msnfs()Dave Hansen1-4/+11
I'm going to be modifying nfsd_rename() shortly to support read-only bind mounts. This #ifdef is around the area I'm patching, and it starts to get really ugly if I just try to add my new code by itself. Using this little helper makes things a lot cleaner to use. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17r/o bind mounts: give permission() a local 'mnt' variableDave Hansen1-1/+5
First of all, this makes the structure jumping look a little bit cleaner. So, this stands alone as a tiny cleanup. But, we also need 'mnt' by itself a few more times later in this series, so this isn't _just_ a cleanup. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17r/o bind mounts: rearrange may_open() to be r/o friendlyDave Hansen1-4/+4
may_open() calls vfs_permission() before it does checks for IS_RDONLY(inode). It checks _again_ inside of vfs_permission(). The check inside of vfs_permission() is going away eventually. With the mnt_want/drop_write() functions, all of the r/o checks (except for this one) are consistently done before calling permission(). Because of this, I'd like to use permission() to hold a debugging check to make sure that the mnt_want/drop_write() calls are actually being made. So, to do this: 1. remove the IS_RDONLY() check from permission() 2. enforce that you must mnt_want_write() before even calling permission() 3. actually add the debugging check to permission() We need to rearrange may_open() to do r/o checks before calling permission(). Here's the patch. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17r/o bind mounts: filesystem helpers for custom 'struct file'sDave Hansen8-49/+104
Why do we need r/o bind mounts? This feature allows a read-only view into a read-write filesystem. In the process of doing that, it also provides infrastructure for keeping track of the number of writers to any given mount. This has a number of uses. It allows chroots to have parts of filesystems writable. It will be useful for containers in the future because users may have root inside a container, but should not be allowed to write to somefilesystems. This also replaces patches that vserver has had out of the tree for several years. It allows security enhancement by making sure that parts of your filesystem read-only (such as when you don't trust your FTP server), when you don't want to have entire new filesystems mounted, or when you want atime selectively updated. I've been using the following script to test that the feature is working as desired. It takes a directory and makes a regular bind and a r/o bind mount of it. It then performs some normal filesystem operations on the three directories, including ones that are expected to fail, like creating a file on the r/o mount. This patch: Some filesystems forego the vfs and may_open() and create their own 'struct file's. This patch creates a couple of helper functions which can be used by these filesystems, and will provide a unified place which the r/o bind mount code may patch. Also, rename an existing, static-scope init_file() to a less generic name. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: add debug message for adding new deviceBjorn Helgaas2-5/+24
Add PNP debug message when adding a device, remove similar PNPACPI message with less information. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: simplify PNPBIOS insert_deviceBjorn Helgaas1-14/+14
Hoist the struct pnp_dev alloc up into the function where it's used. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: use dev_info() in system driverBjorn Helgaas1-13/+16
Use dev_info() for a little consistency. Changes this: pnp: 00:01: ioport range 0xf50-0xf58 has been reserved pnp: 00:01: ioport range 0x408-0x40f has been reserved pnp: 00:01: ioport range 0x900-0x903 has been reserved to this: system 00:01: ioport range 0xf50-0xf58 has been reserved system 00:01: ioport range 0x408-0x40f has been reserved system 00:01: ioport range 0x900-0x903 has been reserved Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: use dev_info(), dev_err(), etc in coreBjorn Helgaas7-29/+31
If we have the struct pnp_dev available, we can use dev_info(), dev_err(), etc., to give a little more information and consistency. [akpm@linux-foundation.org: fix warning] Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: simplify PNP card error handlingBjorn Helgaas1-28/+29
No functional change; just return errors early instead of putting the main part of the function inside an "if" statement. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: remove null pointer checksBjorn Helgaas2-18/+3
Remove some null pointer checks. Null pointers in these areas indicate programming errors, and I think it's better to oops immediately rather than return an error that is easily ignored. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Len Brown <lenb@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17Fix very high interrupt rate for IRQ8 (rtc) unless pnpacpi=offKrzysztof Oledzki1-0/+10
Workaround for broken systems with BIOS that makes RTC interrupt level triggered and/or active low. See http://bugzilla.kernel.org/show_bug.cgi?id=5243 Based on the patch from Shaohua Li <shaohua.li@intel.com> Signed-off-by: Krzysztof Piotr Oledzki <ole@ans.pl> Cc: "Li, Shaohua" <shaohua.li@intel.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Andi Kleen <ak@suse.de> Cc: Adam Belay <ambx1@neo.rr.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: don't fail device init if no DMA channel availableJan Beulich1-17/+12
Most drivers for devices supporting ISA DMA can operate without DMA as well (falling back zo PIO). Thus it seems inappropriate for PNP to fail device initialization in case none of the possible DMA channels are available. Instead, it should be left to the driver to decide what to do if request_dma() fails. The patch at once adjusts the code to account for the fact that pnp_assign_dma() now doesn't need to report failure anymore. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17PNP: make pnpacpi_suspend handle errorsRafael J. Wysocki1-5/+10
pnpacpi_suspend() doesn't check the result returned by acpi_pm_device_sleep_state() before passing it to acpi_bus_set_power(), which may not be desirable.  Make it select the target power state of the device using its second argument if acpi_pm_device_sleep_state() fails. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Looks-ok-to: Pavel Machek <pavel@ucw.cz> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17fuse: clean up execute permission checkingMiklos Szeredi1-18/+31
Define a new function fuse_refresh_attributes() that conditionally refreshes the attributes based on the validity timeout. In fuse_permission() only refresh the attributes for checking the execute bits if necessary. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17fuse: no ENOENT from fuse device readMiklos Szeredi1-4/+5
Don't return -ENOENT for a read() on the fuse device when the request was aborted. Instead return -ENODEV, meaning the filesystem has been force-umounted or aborted. Previously ENOENT meant that the request was interrupted, but now the 'aborted' flag is not set in case of interrupts. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17fuse: no abort on interruptMiklos Szeredi1-19/+24
Don't set 'aborted' flag on a request if it's interrupted. We have to wait for the answer anyway, and this would only a very little time while copying the reply. This means, that write() on the fuse device will not return -ENOENT during normal operation, only if the filesystem is aborted by a forced umount or through the fusectl interface. This could simplify userspace code somewhat when backward compatibility with earlier kernel versions is not required. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17fuse: cleanup in releaseMiklos Szeredi2-2/+8
Move dput/mntput pair from request_end() to fuse_release_end(), because there's no other place they are used. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-17fuse: fix permission checking on sticky directoriesMiklos Szeredi3-2/+18
The VFS checks sticky bits on the parent directory even if the filesystem defines it's own ->permission(). In some situations (sshfs, mountlo, etc) the user does have permission to delete a file even if the attribute based checking would not allow it. So work around this by storing the permission bits separately and returning them in stat(), but cutting the permission bits off from inode->i_mode. This is slightly hackish, but it's probably not worth it to add new infrastructure in VFS and a slight performance penalty for all filesystems, just for the sake of fuse. [Jan Engelhardt] cosmetic fixes Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Jan Engelhardt <jengelh@linux01.gwdg.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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