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* paravirt: unstatic smp_store_cpu_infoJeremy Fitzhardinge2007-07-181-0/+2
| | | | | | Paravirt implementations need to store cpu info when bringing up cpus. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
* paravirt: unstatic leave_mmJeremy Fitzhardinge2007-07-181-0/+2
| | | | | | | | Make globally leave_mm visible, specifically so that Xen can use it to shoot-down lazy uses of cr3. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org>
* paravirt: increase IRQ limitJeremy Fitzhardinge2007-07-181-1/+1
| | | | | | | | When running with CONFIG_PARAVIRT, we may want lots of IRQs even if there's no IO APIC. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com>
* paravirt: add a hook for once the allocator is readyJeremy Fitzhardinge2007-07-182-0/+12
| | | | | | | | | Add a hook so that the paravirt backend knows when the allocator is ready. This is useful for the obvious reason that the allocator is available, but the other side-effect of having the bootmem allocator available is that each page now has an associated "struct page". Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
* paravirt: add an "mm" argument to alloc_ptJeremy Fitzhardinge2007-07-182-6/+6
| | | | | | | It's useful to know which mm is allocating a pagetable. Xen uses this to determine whether the pagetable being added to is pinned or not. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
* use elfnote.h to generate vsyscall notes.Jeremy Fitzhardinge2007-07-181-7/+15
| | | | | | | | | | | Use existing elfnote.h to generate vsyscall notes, rather than doing it locally. Changes elfnote.h a bit to suit, since this is the first asm user, and it wasn't quite right. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Roland McGrath <roland@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.com>
* usermodehelper: Tidy up waitingJeremy Fitzhardinge2007-07-181-3/+9
| | | | | | | | | | | | | | | | | | | | | | | Rather than using a tri-state integer for the wait flag in call_usermodehelper_exec, define a proper enum, and use that. I've preserved the integer values so that any callers I've missed should still work OK. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Andi Kleen <ak@suse.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Joel Becker <joel.becker@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: David Howells <dhowells@redhat.com>
* Add common orderly_poweroff()Jeremy Fitzhardinge2007-07-181-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | Various pieces of code around the kernel want to be able to trigger an orderly poweroff. This pulls them together into a single implementation. By default the poweroff command is /sbin/poweroff, but it can be set via sysctl: kernel/poweroff_cmd. This is split at whitespace, so it can include command-line arguments. This patch replaces four other instances of invoking either "poweroff" or "shutdown -h now": two sbus drivers, and acpi thermal management. sparc64 has its own "powerd"; still need to determine whether it should be replaced by orderly_poweroff(). Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Acked-by: Len Brown <lenb@kernel.org> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Andi Kleen <ak@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: David S. Miller <davem@davemloft.net>
* usermodehelper: split setup from executionJeremy Fitzhardinge2007-07-181-3/+41
| | | | | | | | | | | | | | | | | | | | | Rather than having hundreds of variations of call_usermodehelper for various pieces of usermode state which could be set up, split the info allocation and initialization from the actual process execution. This means the general pattern becomes: info = call_usermodehelper_setup(path, argv, envp); /* basic state */ call_usermodehelper_<SET EXTRA STATE>(info, stuff...); /* extra state */ call_usermodehelper_exec(info, wait); /* run process and free info */ This patch introduces wrappers for all the existing calling styles for call_usermodehelper_*, but folds their implementations into one. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: David Howells <dhowells@redhat.com> Cc: Bj?rn Steinbrink <B.Steinbrink@gmx.de> Cc: Randy Dunlap <randy.dunlap@oracle.com>
* add argv_split()Jeremy Fitzhardinge2007-07-181-0/+3
| | | | | | | | | | | | | | | argv_split() is a helper function which takes a string, splits it at whitespace, and returns a NULL-terminated argv vector. This is deliberately simple - it does no quote processing of any kind. [ Seems to me that this is something which is already being done in the kernel, but I couldn't find any other implementations, either to steal or replace. Keep an eye out. ] Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Randy Dunlap <randy.dunlap@oracle.com>
* add kstrndupJeremy Fitzhardinge2007-07-181-0/+1
| | | | | | | | | | | | | | | | | | | Add a kstrndup function, modelled on strndup. Like strndup this returns a string copied into its own allocated memory, but it copies no more than the specified number of bytes from the source. Remove private strndup() from irda code. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Cc: Akinobu Mita <akinobu.mita@gmail.com> Cc: Arnaldo Carvalho de Melo <acme@mandriva.com> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Panagiotis Issaris <takis@issaris.org> Cc: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
* zs: move to the serial subsystemMaciej W. Rozycki2007-07-182-38/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is a reimplementation of the zs driver for the serial subsystem. Any resemblance to the old driver is purely coincidential. ;-) I do hope I got the handling of modem lines right -- better do not tackle me about the issue unless you feel too good... Any users of the old driver: please note the numbers of the serial lines have now been swapped, i.e. ttyS0 <-> ttyS1 and ttyS2 <-> ttyS3. It has to do with the modem lines mentioned above; basically the port A in a given chip has to be initialised before the port B if you want to use the latter as the serial console (which is usually the case), as operations on modem lines of the serial line associated with the port B access both ports (see the comment at the top of the driver for the details of wiring used). Please update your scripts. This is also the reason each SCC now requests an IRQ once only (as seen in "/proc/interrupts") -- the handler takes care of both ports at once as the line associated with the port B has to take status update interrupts from both ports (and yet the line of the port A takes its own for itself too). The old driver never got it right... Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> 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>
* serial: add early_serial_setup() back to header fileYinghai Lu2007-07-181-0/+2
| | | | | | | | | early_serial_setup was removed from serial.h, but forgot to put in serial_8250.h Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* slob: Kill off duplicate kzalloc() definition.Paul Mundt2007-07-171-10/+0
| | | | | | | | | | With the slab zeroing allocations cleanups Christoph stubbed in a generic kzalloc(), which was missed on SLOB. Follow the SLAB/SLUB changes and kill off the __kzalloc() wrapper that SLOB was using. Reported-by: Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'bsg' of git://git.kernel.dk/data/git/linux-2.6-blockLinus Torvalds2007-07-171-1/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | * 'bsg' of git://git.kernel.dk/data/git/linux-2.6-block: bsg: fix missing space in version print Don't define empty struct bsg_class_device if !CONFIG_BLK_DEV_BSG bsg: Kconfig updates bsg: minor cleanup bsg: device hash table cleanup bsg: fix initialization error handling bugs bsg: mark FUJITA Tomonori as bsg maintainer bsg: convert to dynamic major bsg: address various review comments
| * Don't define empty struct bsg_class_device if !CONFIG_BLK_DEV_BSGGeert Uytterhoeven2007-07-171-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't define an empty struct bsg_class_device if !CONFIG_BLK_DEV_BSG. It's embedded in struct request_queue, but there we have #if defined(CONFIG_BLK_DEV_BSG) struct bsg_class_device bsg_dev; #endif anyway. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | smp_call_function_single() should be a macro on UPAl Viro2007-07-171-10/+8
| | | | | | | | | | | | | | | | | | | | | | ... or we end up with header include order problems from hell. E.g. on m68k this is 100% fatal - local_irq_enable() there wants preempt_count(), which wants task_struct fields, which we won't have when we are in smp.h pulled from sched.h. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Introduce is_owner_or_cap() to wrap CAP_FOWNER use with fsuid checkSatyam Sharma2007-07-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce is_owner_or_cap() macro in fs.h, and convert over relevant users to it. This is done because we want to avoid bugs in the future where we check for only effective fsuid of the current task against a file's owning uid, without simultaneously checking for CAP_FOWNER as well, thus violating its semantics. [ XFS uses special macros and structures, and in general looked ... untouchable, so we leave it alone -- but it has been looked over. ] The (current->fsuid != inode->i_uid) check in generic_permission() and exec_permission_lite() is left alone, because those operations are covered by CAP_DAC_OVERRIDE and CAP_DAC_READ_SEARCH. Similarly operations falling under the purview of CAP_CHOWN and CAP_LEASE are also left alone. Signed-off-by: Satyam Sharma <ssatyam@cse.iitk.ac.in> Cc: Al Viro <viro@ftp.linux.org.uk> Acked-by: Serge E. Hallyn <serge@hallyn.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2007-07-173-2/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (80 commits) KVM: Use CPU_DYING for disabling virtualization KVM: Tune hotplug/suspend IPIs KVM: Keep track of which cpus have virtualization enabled SMP: Allow smp_call_function_single() to current cpu i386: Allow smp_call_function_single() to current cpu x86_64: Allow smp_call_function_single() to current cpu HOTPLUG: Adapt thermal throttle to CPU_DYING HOTPLUG: Adapt cpuset hotplug callback to CPU_DYING HOTPLUG: Add CPU_DYING notifier KVM: Clean up #includes KVM: Remove kvmfs in favor of the anonymous inodes source KVM: SVM: Reliably detect if SVM was disabled by BIOS KVM: VMX: Remove unnecessary code in vmx_tlb_flush() KVM: MMU: Fix Wrong tlb flush order KVM: VMX: Reinitialize the real-mode tss when entering real mode KVM: Avoid useless memory write when possible KVM: Fix x86 emulator writeback KVM: Add support for in-kernel pio handlers KVM: VMX: Fix interrupt checking on lightweight exit KVM: Adds support for in-kernel mmio handlers ...
| * | SMP: Allow smp_call_function_single() to current cpuAvi Kivity2007-07-161-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | This removes the requirement for callers to get_cpu() to check in simple cases. This patch is for !CONFIG_SMP. Cc: Andi Kleen <ak@suse.de> Signed-off-by: Avi Kivity <avi@qumranet.com>
| * | HOTPLUG: Add CPU_DYING notifierAvi Kivity2007-07-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM wants a notification when a cpu is about to die, so it can disable hardware extensions, but at a time when user processes cannot be scheduled on the cpu, so it doesn't try to use virtualization extensions after they have been disabled. This adds a CPU_DYING notification. The notification is called in atomic context on the doomed cpu. Signed-off-by: Avi Kivity <avi@qumranet.com>
| * | 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>
* | | Merge branch 'release' of ↵Linus Torvalds2007-07-173-3/+12
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Clean away some code inside some non-existent CONFIG ifdefs [IA64] ar.itc access must really be after xtime_lock.sequence has been read [IA64] correctly count CPU objects in the ia64/sn hwperf interface [IA64] arbitary speed tty ioctl support [IA64] use machvec=dig on hpzx1 platforms
| * | | [IA64] arbitary speed tty ioctl supportAlan Cox2007-07-133-3/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the needed constants and defines to activate this for the IA64 platform. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | | saner typechecking in generic unaligned.hAl Viro2007-07-171-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Verify that types would match for assignment (under sizeof, so we are safe from side effects or any code actually getting generated), then explicitly cast everywhere to the fixed-sized types. Kills a bunch of bogus warnings about constants being truncated (gcc, sparse), finds a pile of endianness problems hidden by old noise (sparse). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | alpha termios.h hadn't been updatedAl Viro2007-07-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... fortunately, termios and ktermios there are identical, so no run-time breakage happened. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: change bitmap_unplug and others to void functionsNeilBrown2007-07-171-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bitmap_unplug only ever returns 0, so it may as well be void. Two callers try to print a message if it returns non-zero, but that message is already printed by bitmap_file_kick. write_page returns an error which is not consistently checked. It always causes BITMAP_WRITE_ERROR to be set on an error, and that can more conveniently be checked. When the return of write_page is checked, an error causes bitmap_file_kick to be called - so move that call into write_page - and protect against recursive calls into bitmap_file_kick. bitmap_update_sb returns an error that is never checked. So make these 'void' and be consistent about checking the bit. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | md: improve the is_mddev_idle test fixNeilBrown2007-07-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't use 'unsigned' variable to track sync vs non-sync IO, as the only thing we want to do with them is a signed comparison, and fix up the comment which had become quite wrong. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | OMAP: add TI OMAP1610 accelerator entry.Imre Deak2007-07-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Trilok Soni <soni.trilok@gmail.com> Cc: Tony Lindgren <tony@atomide.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fbdev: Add fb_append_extra_logo()Geert Uytterhoeven2007-07-171-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add fb_append_extra_logo(), to append extra lines of logos below the standard Linux logo. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-By: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | tgafb: actually allocate memory for the pseudo_paletteAntonino A. Daplas2007-07-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No memory allocation was done for the pseudo_palette. Allocate one for it. Signed-off-by: Antonino Daplas <adaplas@gmail.com> Acked-by: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | vt: add comment for unbind_con_driver()Jesse Barnes2007-07-171-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - add comment for unbind_con_driver(). - bind_con_driver() is made private again Signed-off-by: Jesse Barnes <jesse.barnes@intel.com> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fbdev: fbcon: console unregistration from unregister_framebufferJesse Barnes2007-07-171-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows for proper console unregistration via the VT layer, and updates the FB layer to use it. This makes debugging new console drivers much easier, since you can properly clean them up before unloading. [adaplas] unregister_framebuffer() is typically called as part of the driver's module_exit(). Doing so otherwise will freeze the machine as the VT layer is holding reference counts on fbcon, and fbcon on the driver. With this change, it allows unregister_framebuffer() to be called safely anywhere as needed. Additions from the original: If multiple drivers are used by fbcon, and if one of them unregisters, a driver will take over the consoles vacated by the outgoing one (via set_con2fb_map). Once only the outgoing driver remains, then fbcon will unbind from the VT layer (if CONFIG_HW_CONSOLE_UNBINDING is set to y). It is important that these drivers implement fb_open() and fb_release() just to ensure that no other process is using the driver. Likewise, these drivers _must_ check the return value of unregister_framebuffer(). [akpm@linux-foundation.org: make fbcon_unbind() stub inline] Signed-off-by: Jesse Barnes <jesse.barnes@intel.com> Signed-off-by: Antonino Daplas <adaplas@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fbcon: allow fbcon to use the primary display driverAntonino A. Daplas2007-07-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow fbcon to select the primary display adapter using the fb_is_primary_device() arch-specific helper. If a a primary adapter is detected, fbcon will unbind the old adapter from the VT layer, then rebind using the new adapter. This requires that bind_/unbind_con_driver() be made public. Because this feature may produce unexpected behavior (from the user's POV), this must be explicitly enabled in Kconfig. [akpm@linux-foundation.org: export unbind_con_driver] Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fbdev: detect primary display deviceAntonino A. Daplas2007-07-1724-1/+141
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add function helper, fb_is_primary_device(). Given struct fb_info, it will return a nonzero value if the device is the primary display. Currently, only the i386 is supported where the function checks for the IORESOURCE_ROM_SHADOW flag. Signed-off-by: Antonino Daplas <adaplas@gmail.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | fbdev: move arch-specific bits to their respective subdirectoriesAntonino A. Daplas2007-07-1724-0/+260
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move arch-specific bits of fb_mmap() to their respective subdirectories [bob.picco@hp.com: efi_range_is_wc is referenced but not declared] [bunk@stusta.de: fix include/asm-m68k/fb.h] Signed-off-by: Antonino Daplas <adaplas@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | rtc: add support for the ST M48T59 RTCMark Zhan2007-07-171-0/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [akpm@linux-foundation.org: x86_64 build fix] [akpm@linux-foundation.org: The acpi guys changed the bin_attribute code] Signed-off-by: Mark Zhan <rongkai.zhan@windriver.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd: enforce per-flavor id squashingJ. Bruce Fields2007-07-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow root squashing to vary per-pseudoflavor, so that you can (for example) allow root access only when sufficiently strong security is in use. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: secinfo handling without secinfo= optionJ. Bruce Fields2007-07-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We could return some sort of error in the case where someone asks for secinfo on an export without the secinfo= option set--that'd be no worse than what we've been doing. But it's not really correct. So, hack up an approximate secinfo response in that case--it may not be complete, but it'll tell the client at least one acceptable security flavor. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: implement secinfoAndy Adamson2007-07-172-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement the secinfo operation. (Thanks to Usha Ketineni wrote an earlier version of this support.) Cc: Usha Ketineni <uketinen@us.ibm.com> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: make readonly access depend on pseudoflavorJ. Bruce Fields2007-07-172-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow readonly access to vary depending on the pseudoflavor, using the flag passed with each pseudoflavor in the export downcall. The rest of the flags are ignored for now, though some day we might also allow id squashing to vary based on the flavor. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: return nfserr_wrongsecAndy Adamson2007-07-172-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the first actual use of the secinfo information by using it to return nfserr_wrongsec when an export is found that doesn't allow the flavor used on this request. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd: set rq_client to ip-address-determined-domainJ. Bruce Fields2007-07-172-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want it to be possible for users to restrict exports both by IP address and by pseudoflavor. The pseudoflavor information has previously been passed using special auth_domains stored in the rq_client field. After the preceding patch that stored the pseudoflavor in rq_pflavor, that's now superfluous; so now we use rq_client for the ip information, as auth_null and auth_unix do. However, we keep around the special auth_domain in the rq_gssclient field for backwards compatibility purposes, so we can still do upcalls using the old "gss/pseudoflavor" auth_domain if upcalls using the unix domain to give us an appropriate export. This allows us to continue supporting old mountd. In fact, for this first patch, we always use the "gss/pseudoflavor" auth_domain (and only it) if it is available; thus rq_client is ignored in the auth_gss case, and this patch on its own makes no change in behavior; that will be left to later patches. Note on idmap: I'm almost tempted to just replace the auth_domain in the idmap upcall by a dummy value--no version of idmapd has ever used it, and it's unlikely anyone really wants to perform idmapping differently depending on the where the client is (they may want to perform *credential* mapping differently, but that's a different matter--the idmapper just handles id's used in getattr and setattr). But I'm updating the idmapd code anyway, just out of general backwards-compatibility paranoia. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd: provide export lookup wrappers which take a svc_rqstJ. Bruce Fields2007-07-171-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Split the callers of exp_get_by_name(), exp_find(), and exp_parent() into those that are processing requests and those that are doing other stuff (like looking up filehandles for mountd). No change in behavior, just a (fairly pointless, on its own) cleanup. (Note this has the effect of making nfsd_cross_mnt() pass rqstp->rq_client instead of exp->ex_client into exp_find_by_name(). However, the two should have the same value at this point.) Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: simplify exp_pseudoroot argumentsJ. Bruce Fields2007-07-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're passing three arguments to exp_pseudoroot, two of which are just fields of the svc_rqst. Soon we'll want to pass in a third field as well. So let's just give up and pass in the whole struct svc_rqst. Also sneak in some minor style cleanups while we're at it. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: parse secinfo information in exports downcallAndy Adamson2007-07-171-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We add a list of pseudoflavors to each export downcall, which will be used both as a list of security flavors allowed on that export, and (in the order given) as the list of pseudoflavors to return on secinfo calls. This patch parses the new downcall information and adds it to the export structure, but doesn't use it for anything yet. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: store pseudoflavor in requestAndy Adamson2007-07-172-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new field to the svc_rqst structure to record the pseudoflavor that the request was made with. For now we record the pseudoflavor but don't use it for anything. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: don't delegate files that have had conflictsMeelap Shah2007-07-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | One more incremental delegation policy improvement: don't give out a delegation on a file if conflicting access has previously required that a delegation be revoked on that file. (In practice we'll forget about the conflict when the struct nfs4_file is removed on close, so this is of limited use for now, though it should at least solve a temporary problem with self-conflicts on write opens from the same client.) Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd4: vary maximum delegation limit based on RAM sizeMeelap Shah2007-07-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our original NFSv4 delegation policy was to give out a read delegation on any open when it was possible to. Since the lifetime of a delegation isn't limited to that of an open, a client may quite reasonably hang on to a delegation as long as it has the inode cached. This becomes an obvious problem the first time a client's inode cache approaches the size of the server's total memory. Our first quick solution was to add a hard-coded limit. This patch makes a mild incremental improvement by varying that limit according to the server's total memory size, allowing at most 4 delegations per megabyte of RAM. My quick back-of-the-envelope calculation finds that in the worst case (where every delegation is for a different inode), a delegation could take about 1.5K, which would make the worst case usage about 6% of memory. The new limit works out to be about the same as the old on a 1-gig server. [akpm@linux-foundation.org: Don't needlessly bloat vmlinux] [akpm@linux-foundation.org: Make it right for highmem machines] Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | knfsd: nfsd: remove unused header interface.hJ. Bruce Fields2007-07-172-14/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It looks like Al Viro gutted this header file five years ago and it hasn't been touched since. Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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