- 24 Mar, 2011 40 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6Linus Torvalds authored
* 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: intel_idle: Rename cpuidle states
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (42 commits) ACPI: minor printk format change in acpi_pad ACPI: make acpi_pad /sys output more readable ACPICA: Update version to 20110316 ACPICA: Header support for SLIC table ACPI: Make sure the FADT is at least rev 2 before using the reset register ACPI: Bug compatibility for Windows on the ACPI reboot vector ACPICA: Fix access width for reset vector ACPI battery: fribble sysfs files from a resume notifier ACPI button: remove unused procfs I/F ACPI, APEI, Add PCIe AER error information printing support PCIe, AER, use pre-generated prefix in error information printing ACPI, APEI, Add ERST record ID cache ACPI: Use syscore_ops instead of sysdev class and sysdev ACPI: Remove the unused EC sysdev class ACPI: use __cpuinit for the acpi_processor_set_pdc() call tree ACPI: use __init where possible in processor driver Thermal_Framework-Fix_crash_during_hwmon_unregister ACPICA: Update version to 20110211. ACPICA: Add mechanism to defer _REG methods for some installed handlers ACPICA: Add support for FunctionalFixedHW in acpi_ut_get_region_name ...
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git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfinLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: Blackfin: bf54x: re-enable anomaly 05000353 for all revs Blackfin: enable atomic64_t support Blackfin: wire up new syncfs syscall Blackfin: SMP: flush CoreB cache when shutting down
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git://git.infradead.org/ubi-2.6Linus Torvalds authored
* 'for-linus' of git://git.infradead.org/ubi-2.6: UBIFS: fix assertion warning and refine comments UBIFS: kill CONFIG_UBIFS_FS_DEBUG_CHKS UBIFS: use GFP_NOFS properly UBI: use GFP_NOFS properly
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
* 'for-2.6.39' of git://linux-nfs.org/~bfields/linux: SUNRPC: Remove resource leak in svc_rdma_send_error() nfsd: wrong index used in inner loop nfsd4: fix comment and remove unused nfsd4_file fields nfs41: make sure nfs server return right ca_maxresponsesize_cached nfsd: fix compile error svcrpc: fix bad argument in unix_domain_find nfsd4: fix struct file leak nfsd4: minor nfs4state.c reshuffling svcrpc: fix rare race on unix_domain creation nfsd41: modify the members value of nfsd4_op_flags nfsd: add proc file listing kernel's gss_krb5 enctypes gss:krb5 only include enctype numbers in gm_upcall_enctypes NFSD, VFS: Remove dead code in nfsd_rename() nfsd: kill unused macro definition locks: use assign_type()
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git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linusLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: Use vmalloc rather than kmalloc for zlib workspace Squashfs: handle corruption of directory structure Squashfs: wrap squashfs_mount() definition Squashfs: xz_wrapper doesn't need to include squashfs_fs_i.h anymore Squashfs: Update documentation to include compression options Squashfs: Update Kconfig help text to include xz compression Squashfs: add compression options support to xz decompressor Squashfs: extend decompressor framework to handle compression options
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infinibandLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB: Increase DMA max_segment_size on Mellanox hardware IB/mad: Improve an error message so error code is included RDMA/nes: Don't print success message at level KERN_ERR RDMA/addr: Fix return of uninitialized ret value IB/srp: try to use larger FMR sizes to cover our mappings IB/srp: add support for indirect tables that don't fit in SRP_CMD IB/srp: rework mapping engine to use multiple FMR entries IB/srp: allow sg_tablesize to be set for each target IB/srp: move IB CM setup completion into its own function IB/srp: always avoid non-zero offsets into an FMR
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6Linus Torvalds authored
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (90 commits) mfd: Push byte swaps out of wm8994 bulk read path mfd: Rename ab8500 gpadc header mfd: Constify WM8994 write path mfd: Push byte swap out of WM8994 bulk I/O mfd: Avoid copying data in WM8994 I2C write mfd: Remove copy from WM831x I2C write function mfd: Staticise WM8994 PM ops regulator: Add a subdriver for TI TPS6105x regulator portions v2 mfd: Add a core driver for TI TPS61050/TPS61052 chips v2 gpio: Add Tunnel Creek support to sch_gpio mfd: Add Tunnel Creek support to lpc_sch pci_ids: Add Intel Tunnel Creek LPC Bridge device ID. regulator: MAX8997/8966 support mfd: Add WM8994 bulk register write operation mfd: Append additional read write on 88pm860x mfd: Adopt mfd_data in 88pm860x input driver mfd: Adopt mfd_data in 88pm860x regulator mfd: Adopt mfd_data in 88pm860x led mfd: Adopt mfd_data in 88pm860x backlight mfd: Fix MAX8997 Kconfig entry typos ...
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git://git.open-osd.org/linux-open-osdLinus Torvalds authored
* 'for-linus' of git://git.open-osd.org/linux-open-osd: exofs: deprecate the commands pending counter exofs: Write sbi->s_nextid as part of the Create command exofs: Add option to mount by osdname exofs: Override read-ahead to align on stripe_size exofs: simple fsync race fix exofs: Optimize read_4_write exofs: Trivial: fix some indentation and debug prints exofs: Remove redundant unlikely()
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git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6: (140 commits) MAINTAINERS: de-orphan fbdev. MAINTAINERS: Add file pattern for fb dt bindings. video: Move sm501fb devicetree binding documentation to a better place. fbcon: fix situation where fbcon gets deinitialised and can't reinit. video, sm501: add OF binding to support SM501 video, sm501: add edid and commandline support video, sm501: add I/O functions for use on powerpc video: Fix EDID macros H_SYNC_WIDTH and H_SYNC_OFFSET fbcon: Bugfix soft cursor detection in Tile Blitting video: add missing framebuffer_release in error path video: metronomefb: add __devexit_p around reference to metronomefb_remove video: hecubafb: add __devexit_p around reference to hecubafb_remove drivers:video:aty:radeon_base Fix typo occationally to occasionally atmel_lcdfb: add fb_blank function atmel_lcdfb: implement inverted contrast pwm video: s3c-fb: return proper error if clk_get fails uvesafb,vesafb: create WC or WB PAT-entries video: ffb: fix ffb_probe error path radeonfb: Let hwmon driver probe the "monid" I2C bus fbdev: sh_mobile_lcdc: checking NULL instead of IS_ERR() ...
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Artem Bityutskiy authored
This patch fixes the following UBIFS assertion warning: UBIFS assert failed in do_readpage at 115 (pid 199) [<b00321b8>] (unwind_backtrace+0x0/0xdc) from [<af025118>] (do_readpage+0x108/0x594 [ubifs]) [<af025118>] (do_readpage+0x108/0x594 [ubifs]) from [<af025764>] (ubifs_write_end+0x1c0/0x2e8 [ubifs]) [<af025764>] (ubifs_write_end+0x1c0/0x2e8 [ubifs]) from [<b00a0164>] (generic_file_buffered_write+0x18c/0x270) [<b00a0164>] (generic_file_buffered_write+0x18c/0x270) from [<b00a08d4>] (__generic_file_aio_write+0x478/0x4c0) [<b00a08d4>] (__generic_file_aio_write+0x478/0x4c0) from [<b00a0984>] (generic_file_aio_write+0x68/0xc8) [<b00a0984>] (generic_file_aio_write+0x68/0xc8) from [<af024a78>] (ubifs_aio_write+0x178/0x1d8 [ubifs]) [<af024a78>] (ubifs_aio_write+0x178/0x1d8 [ubifs]) from [<b00d104c>] (do_sync_write+0xb0/0x100) [<b00d104c>] (do_sync_write+0xb0/0x100) from [<b00d1abc>] (vfs_write+0xac/0x154) [<b00d1abc>] (vfs_write+0xac/0x154) from [<b00d1c10>] (sys_write+0x3c/0x68) [<b00d1c10>] (sys_write+0x3c/0x68) from [<b002d9a0>] (ret_fast_syscall+0x0/0x2c) The 'PG_checked' flag is used to indicate that the page does not supposedly exist on the media (e.g., a hole or a page beyond the inode size), so it requires slightly bigger budget, because we have to account the indexing size increase. And this flag basically tells that the budget for this page has to be "new page budget". The "new page budget" is slightly bigger than the "existing page budget". The 'do_readpage()' function has the following assertion which sometimes is hit: 'ubifs_assert(!PageChecked(page))'. Obviously, the meaning of this assertion is: "I should not be asked to read a page which does not exist on the media". However, in 'ubifs_write_begin()' we have a small "trick". Notice, that VFS may write pages which were not read yet, so the page data were not loaded from the media to the page cache yet. If VFS tells that it is going to change only some part of the page, we obviously have to load it from the media. However, if VFS tells that it is going to change whole page, we do not read it from the media for optimization purposes. However, since we do not read it, we do not know if it exists on the media or not (a hole, etc). So we set the 'PG_checked' flag to this page to force bigger budget, just in case. So 'ubifs_write_begin()' sets 'PG_checked'. Then we are in 'ubifs_write_end()'. And VFS tells us: "hey, for some reasons I changed my mind and did not change whole page". Frankly, I do not know why this happens, but I hit this somehow on an ARM platform. And this is extremely rare. So in this case UBIFS does the following: 1. Cancels allocated budget. 2. Loads the page from the media by calling 'do_readpage()'. 3. Asks VFS to repeat the whole write operation from the very beginning (call '->write_begin() again, etc). And the assertion warning is hit at the step 2 - remember we have the 'PG_checked' set for this page, and 'do_readpage()' does not like this. So this patch fixes the problem by adding step 1.5 and cleaning the 'PG_checked' before calling 'do_readpage()'. All in all, this patch does not fix any functionality issue, but it silences UBIFS false positive warning which may happen in very very rare cases. And while on it, this patch also improves a commentary which explains the reasons of setting the 'PG_checked' flag for the page. The old commentary was a bit difficult to understand. Signed-off-by:Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Artem Bityutskiy authored
Simplify UBIFS configuration menu and kill the option to enable self-check compile-time. We do not really need this because we can do this run-time using the module parameters or the corresponding sysfs interfaces. And there is a value in simplifying the kernel configuration menu which becomes increasingly large. Signed-off-by: -
Artem Bityutskiy authored
This patch fixes a brown-paperbag bug which was introduced by me: I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make sure my allocations do not cause write-back. But the correct form is "GFP_NOFS". Signed-off-by: -
Artem Bityutskiy authored
This patch fixes a brown-paperbag bug which was introduced by me: I used incorrect "GFP_KERNEL | GFP_NOFS" allocation flags to make sure my allocations do not cause write-back. But the correct form is "GFP_NOFS". Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: deal with races in /proc/*/{syscall,stack,personality} proc: enable writing to /proc/pid/mem proc: make check_mem_permission() return an mm_struct on success proc: hold cred_guard_mutex in check_mem_permission() proc: disable mem_write after exec mm: implement access_remote_vm mm: factor out main logic of access_process_vm mm: use mm_struct to resolve gate vma's in __get_user_pages mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm mm: arch: make in_gate_area take an mm_struct instead of a task_struct mm: arch: make get_gate_vma take an mm_struct instead of a task_struct x86: mark associated mm when running a task in 32 bit compatibility mode x86: add context tag to mark mm when running a task in 32-bit compatibility mode auxv: require the target to be tracable (or yourself) close race in /proc/*/environ report errors in /proc/*/*map* sanely pagemap: close races with suid execve make sessionid permissions in /proc/*/task/* match those in /proc/* fix leaks in path_lookupat() Fix up trivial conflicts in fs/proc/base.c
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Linus Torvalds authored
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (35 commits) ARM: Update (and cut down) mach-types ARM: 6771/1: vexpress: add support for multiple core tiles ARM: 6797/1: hw_breakpoint: Fix newlines in WARNings ARM: 6751/1: vexpress: select applicable errata workarounds in Kconfig ARM: 6753/1: omap4: Enable ARM local timers with OMAP4430 es1.0 exception ARM: 6759/1: smp: Select local timers vs broadcast timer support runtime ARM: pgtable: add pud-level code ARM: 6673/1: LPAE: use phys_addr_t instead of unsigned long for start of membanks ARM: Use long long format when printing meminfo physical addresses ARM: integrator: add Integrator/CP sched_clock support ARM: realview/vexpress: consolidate SMP bringup code ARM: realview/vexpress: consolidate localtimer support ARM: integrator/versatile: consolidate FPGA IRQ handling code ARM: rationalize versatile family Kconfig/Makefile ARM: realview: remove old AMBA device DMA definitions ARM: versatile: remove old AMBA device DMA definitions ARM: vexpress: use new init_early for clock tree and sched_clock init ARM: realview: use new init_early for clock tree and sched_clock init ARM: versatile: use new init_early for clock tree and sched_clock init ARM: integrator: use new init_early for clock tree init ...
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Olaf Hering authored
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn The Xen PV drivers in a crashed HVM guest can not connect to the dom0 backend drivers because both frontend and backend drivers are still in connected state. To run the connection reset function only in case of a crashdump, the is_kdump_kernel() function needs to be available for the PV driver modules. Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel() usable for modules. Leave 'elfcorehdr' as early_param(). This changes powerpc from __setup() to early_param(). It adds an address range check from x86 also on ia64 and powerpc. [akpm@linux-foundation.org: additional #includes] [akpm@linux-foundation.org: remove elfcorehdr_addr export] [akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes] Signed-off-by:
Olaf Hering <olaf@aepfle.de> Cc: Russell King <rmk@arm.linux.org.uk> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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FUJITA Tomonori authored
There is no user now. Signed-off-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: David Miller <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Signed-off-by:
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Mandeep Singh Baines authored
printk()s without a priority level default to KERN_WARNING. To reduce noise at KERN_WARNING, this patch set the priority level appriopriately for unleveled printks()s. This should be useful to folks that look at dmesg warnings closely. Signed-off-by:
Mandeep Singh Baines <msb@chromium.org> Signed-off-by:
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Serge E. Hallyn authored
And give it a kernel-doc comment. [akpm@linux-foundation.org: btrfs changed in linux-next] Signed-off-by:
Serge E. Hallyn <serge.hallyn@canonical.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Acked-by:
David Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Signed-off-by:
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Serge E. Hallyn authored
Cheat for now and say all files belong to init_user_ns. Next step will be to let superblocks belong to a user_ns, and derive inode_userns(inode) from inode->i_sb->s_user_ns. Finally we'll introduce more flexible arrangements. Changelog: Feb 15: make is_owner_or_cap take const struct inode Feb 23: make is_owner_or_cap bool [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com> Acked-by:
Daniel Lezcano <daniel.lezcano@free.fr> Acked-by:
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Serge E. Hallyn authored
CAP_IPC_OWNER and CAP_IPC_LOCK can be checked against current_user_ns(), because the resource comes from current's own ipc namespace. setuid/setgid are to uids in own namespace, so again checks can be against current_user_ns(). Changelog: Jan 11: Use task_ns_capable() in place of sched_capable(). Jan 11: Use nsown_capable() as suggested by Bastian Blank. Jan 11: Clarify (hopefully) some logic in futex and sched.c Feb 15: use ns_capable for ipc, not nsown_capable Feb 23: let copy_ipcs handle setting ipc_ns->user_ns Feb 23: pass ns down rather than taking it from current [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
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Serge E. Hallyn authored
Changelog: Feb 15: Don't set new ipc->user_ns if we didn't create a new ipc_ns. Feb 23: Move extern declaration to ipc_namespace.h, and group fwd declarations at top. Signed-off-by:
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Serge E. Hallyn authored
This allows setuid/setgid in containers. It also fixes some corner cases where kernel logic foregoes capability checks when uids are equivalent. The latter will need to be done throughout the whole kernel. Changelog: Jan 11: Use nsown_capable() as suggested by Bastian Blank. Jan 11: Fix logic errors in uid checks pointed out by Bastian. Feb 15: allow prlimit to current (was regression in previous version) Feb 23: remove debugging printks, uninline set_one_prio_perm and make it bool, and document its return value. Signed-off-by:
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Serge E. Hallyn authored
So we can let type safety keep things sane, and as a bonus we can remove the declaration of init_user_ns in capability.h. Signed-off-by:
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Serge E. Hallyn authored
ptrace is allowed to tasks in the same user namespace according to the usual rules (i.e. the same rules as for two tasks in the init user namespace). ptrace is also allowed to a user namespace to which the current task the has CAP_SYS_PTRACE capability. Changelog: Dec 31: Address feedback by Eric: . Correct ptrace uid check . Rename may_ptrace_ns to ptrace_capable . Also fix the cap_ptrace checks. Jan 1: Use const cred struct Jan 11: use task_ns_capable() in place of ptrace_capable(). Feb 23: same_or_ancestore_user_ns() was not an appropriate check to constrain cap_issubset. Rather, cap_issubset() only is meaningful when both capsets are in the same user_ns. Signed-off-by:
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Serge E. Hallyn authored
Changelog: Dec 8: Fixed bug in my check_kill_permission pointed out by Eric Biederman. Dec 13: Apply Eric's suggestion to pass target task into kill_ok_by_cred() for clarity Dec 31: address comment by Eric Biederman: don't need cred/tcred in check_kill_permission. Jan 1: use const cred struct. Jan 11: Per Bastian Blank's advice, clean up kill_ok_by_cred(). Feb 16: kill_ok_by_cred: fix bad parentheses Feb 23: per akpm, let compiler inline kill_ok_by_cred Signed-off-by:
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Serge E. Hallyn authored
Changelog: Feb 23: let clone_uts_ns() handle setting uts->user_ns To do so we need to pass in the task_struct who'll get the utsname, so we can get its user_ns. Feb 23: As per Oleg's coment, just pass in tsk, instead of two of its members. Signed-off-by:
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Serge E. Hallyn authored
- Introduce ns_capable to test for a capability in a non-default user namespace. - Teach cap_capable to handle capabilities in a non-default user namespace. The motivation is to get to the unprivileged creation of new namespaces. It looks like this gets us 90% of the way there, with only potential uid confusion issues left. I still need to handle getting all caps after creation but otherwise I think I have a good starter patch that achieves all of your goals. Changelog: 11/05/2010: [serge] add apparmor 12/14/2010: [serge] fix capabilities to created user namespaces Without this, if user serge creates a user_ns, he won't have capabilities to the user_ns he created. THis is because we were first checking whether his effective caps had the caps he needed and returning -EPERM if not, and THEN checking whether he was the creator. Reverse those checks. 12/16/2010: [serge] security_real_capable needs ns argument in !security case 01/11/2011: [serge] add task_ns_capable helper 01/11/2011: [serge] add nsown_capable() helper per Bastian Blank suggestion 02/16/2011: [serge] fix a logic bug: the root user is always creator of init_user_ns, but should not always have capabilities to it! Fix the check in cap_capable(). 02/21/2011: Add the required user_ns parameter to security_capable, fixing a compile failure. 02/23/2011: Convert some macros to functions as per akpm comments. Some couldn't be converted because we can't easily forward-declare them (they are inline if !SECURITY, extern if SECURITY). Add a current_user_ns function so we can use it in capability.h without #including cred.h. Move all forward declarations together to the top of the #ifdef __KERNEL__ section, and use kernel-doc format. 02/23/2011: Per dhowells, clean up comment in cap_capable(). 02/23/2011: Per akpm, remove unreachable 'return -EPERM' in cap_capable. (Original written and signed off by Eric; latest, modified version acked by him) [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: export current_user_ns() for ecryptfs] [serge.hallyn@canonical.com: remove unneeded extra argument in selinux's task_has_capability] Signed-off-by:
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Serge E. Hallyn authored
The expected course of development for user namespaces targeted capabilities is laid out at https://wiki.ubuntu.com/UserNamespace. Goals: - Make it safe for an unprivileged user to unshare namespaces. They will be privileged with respect to the new namespace, but this should only include resources which the unprivileged user already owns. - Provide separate limits and accounting for userids in different namespaces. Status: Currently (as of 2.6.38) you can clone with the CLONE_NEWUSER flag to get a new user namespace if you have the CAP_SYS_ADMIN, CAP_SETUID, and CAP_SETGID capabilities. What this gets you is a whole new set of userids, meaning that user 500 will have a different 'struct user' in your namespace than in other namespaces. So any accounting information stored in struct user will be unique to your namespace. However, throughout the kernel there are checks which - simply check for a capability. Since root in a child namespace has all capabilities, this means that a child namespace is not constrained. - simply compare uid1 == uid2. Since these are the integer uids, uid 500 in namespace 1 will be said to be equal to uid 500 in namespace 2. As a result, the lxc implementation at lxc.sf.net does not use user namespaces. This is actually helpful because it leaves us free to develop user namespaces in such a way that, for some time, user namespaces may be unuseful. Bugs aside, this patchset is supposed to not at all affect systems which are not actively using user namespaces, and only restrict what tasks in child user namespace can do. They begin to limit privilege to a user namespace, so that root in a container cannot kill or ptrace tasks in the parent user namespace, and can only get world access rights to files. Since all files currently belong to the initila user namespace, that means that child user namespaces can only get world access rights to *all* files. While this temporarily makes user namespaces bad for system containers, it starts to get useful for some sandboxing. I've run the 'runltplite.sh' with and without this patchset and found no difference. This patch: copy_process() handles CLONE_NEWUSER before the rest of the namespaces. So in the case of clone(CLONE_NEWUSER|CLONE_NEWUTS) the new uts namespace will have the new user namespace as its owner. That is what we want, since we want root in that new userns to be able to have privilege over it. Changelog: Feb 15: don't set uts_ns->user_ns if we didn't create a new uts_ns. Feb 23: Move extern init_user_ns declaration from init/version.c to utsname.h. Signed-off-by:
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Oleg Nesterov authored
After the previous cleanup in proc_get_sb() the global proc_mnt has no reasons to exists, kill it. Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Signed-off-by:
Serge E. Hallyn <serge@hallyn.com> Signed-off-by:
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Eric W. Biederman authored
Reorganize proc_get_sb() so it can be called before the struct pid of the first process is allocated. Signed-off-by:
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Eric W. Biederman authored
This patchset is a cleanup and a preparation to unshare the pid namespace. These prerequisites prepare for Eric's patchset to give a file descriptor to a namespace and join an existing namespace. This patch: It turns out that the existing assignment in copy_process of the child_reaper can handle the initial assignment of child_reaper we just need to generalize the test in kernel/fork.c Signed-off-by:
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Richard Weinberger authored
When dmesg_restrict is set to 1 CAP_SYS_ADMIN is needed to read the kernel ring buffer. But a root user without CAP_SYS_ADMIN is able to reset dmesg_restrict to 0. This is an issue when e.g. LXC (Linux Containers) are used and complete user space is running without CAP_SYS_ADMIN. A unprivileged and jailed root user can bypass the dmesg_restrict protection. With this patch writing to dmesg_restrict is only allowed when root has CAP_SYS_ADMIN. Signed-off-by:
Richard Weinberger <richard@nod.at> Acked-by:
Dan Rosenberg <drosenberg@vsecurity.com> Acked-by:
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Petr Holasek authored
Add boundaries of allowed input ranges for: dirty_expire_centisecs, drop_caches, overcommit_memory, page-cluster and panic_on_oom. Signed-off-by:
Petr Holasek <pholasek@redhat.com> Acked-by:
Dave Young <hidave.darkstar@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Denis Kirjanov authored
Drop dead code. Signed-off-by:
Denis Kirjanov <dkirjanov@kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Denis Kirjanov authored
Since the for loop checks for the table->procname drop useless table->procname checks inside the loop body Signed-off-by:
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Dan Carpenter authored
If rio is not a switch then "rswitch" is null. Signed-off-by:
Dan Carpenter <error27@gmail.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by:
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Alexandre Bounine authored
Removes resource reservation from the common sybsystem initialization code and make it part of mport driver initialization. This resolves conflict with resource reservation by device specific mport drivers. Signed-off-by:
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Alexandre Bounine authored
Changes mport ID and host destination ID assignment to implement unified method common to all mport drivers. Makes "riohdid=" kernel command line parameter common for all architectures with support for more that one host destination ID assignment. Signed-off-by:
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